CN219480177U - Novel full-automatic puncture biopsy needle with adjustable - Google Patents

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to an adjustable novel full-automatic puncture biopsy needle which comprises a shell component, a compression operation component, an outer needle component, an inner needle component, an outer needle locking component, an inner needle locking component and an excitation key, wherein the compression operation component, the outer needle component, the inner needle component, the outer needle locking component and the excitation key are cooperatively arranged on the shell component. The utility model has two gears, can switch gears and has strong functions; the gear shifting structure and the gear shifting operation are very simple and visual, and are not easy to operate by mistake.

Description

Novel full-automatic puncture biopsy needle with adjustable

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to an adjustable novel full-automatic puncture biopsy needle.

Background

For diagnosis and treatment of malignant tumor, analyzing the biopsy condition of tissue before tissue transformation, and how to reduce the pain of patients to the maximum extent, safely, rapidly, with low cost and conveniently taking out target tissue from the body, is a long-term research field.

The disposable full-automatic biopsy needle is a percutaneous puncture, enters human target tissue through a small incision and cuts a tissue specimen for examination and analysis, and is used as a medical instrument for sampling and sucking cells of tissues such as unidentified tumors of various organs such as kidneys, livers, lungs, breasts, thyroid glands and the like, and has the advantages of small damage, small risk, same reliable results and the like.

Since the sites of the patient to be biopsied and sampled are different, such as tissues of the prostate, the kidney, the liver, the spleen, the breast and the like, the size of suspected tumors requiring the puncture biopsy is also generally different, and therefore, a biopsy needle with proper ejection stroke and puncture sampling length is required for operation. However, most of the main full-automatic biopsy needles in the market at present have only one gear, and the gear cannot be switched; the full-automatic biopsy needle gear shifting structure with a small number of gear shifting accompanies is complex, gear shifting operation is not visual and image, operation is inconvenient, and misoperation is easy. Some full-automatic upshift mechanisms can only be shifted from first gear to second gear, and cannot be directly shifted from zero gear to second gear.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the adjustable novel full-automatic puncture biopsy needle which has the advantages of simple structure, convenient operation and gear shifting.

An adjustable novel full-automatic puncture biopsy needle comprises a shell component, and a compression operation component, an outer needle component, an inner needle component, an outer needle locking component, an inner needle locking component and an excitation key which are arranged on the shell component in a matching way;

the inner needle assembly is connected with the outer needle assembly in a matched manner, and the outer needle assembly is provided with an ejecting state and two retraction states, wherein the two retraction states are divided into a first-gear retraction state and a second-gear retraction state; the inner needle assembly is provided with an ejecting state and two retraction states, and the two retraction states are divided into a first-gear retraction state and a second-gear retraction state;

the compression operation assembly is connected with the shell assembly in a front-back sliding way and comprises an outer needle operation piece and an inner needle operation piece, the outer needle operation piece is used for driving the outer needle assembly to retract, and the inner needle operation piece is used for driving the inner needle assembly to retract;

the outer needle locking component is used for being in locking fit with the outer needle component in a retracted state;

the inner needle locking component is used for being in locking fit with the inner needle component in a retracted state;

the excitation button is used for driving the inner needle locking assembly to move, so that the inner needle locking assembly releases the locking of the inner needle assembly, and then the inner needle assembly is extended and reset.

Further, the outer needle assembly comprises an outer needle tube, an outer needle tube support and a first elastic element, the outer needle tube support is arranged in the shell assembly in a front-back sliding mode, the outer needle tube is fixedly arranged on the outer needle tube support in a penetrating mode, and the first elastic element is used for providing elastic force for resetting the outer needle assembly from a retracted state to an ejected state;

the inner needle assembly comprises an inner needle rod, an inner needle rod support, a second elastic element and a fifth elastic element, the inner needle rod support is arranged in the shell assembly in a front-back sliding mode and located at the rear end of the outer needle tube support, the inner needle rod is arranged at the front end of the inner needle rod support in a matched mode and penetrates through the outer needle tube in a front-back penetrating mode, the front end of the inner needle rod is provided with a sampling groove, the second elastic element is used for providing elastic force for resetting the inner needle assembly from a retracted state to an ejected state, and the fifth elastic element is used for providing elastic force for resetting after the inner needle rod support is ejected.

Further, the outer needle locking assembly comprises an outer tube locking piece and a third elastic element, the outer tube locking piece is movably arranged in the shell assembly and is provided with an outer tube first-stop locking part and an outer tube second-stop locking part which are arranged in front of and behind the outer tube locking piece, the outer tube locking piece also comprises an inward contracted state and an extended state, when the outer tube locking piece is in the extended state, the outer tube first-stop locking part can be in locking fit with the outer needle tube support in the first-stop retracted state, the outer tube second-stop locking part can be in locking fit with the outer needle tube support in the second-stop retracted state, and the third elastic element is used for acting on the outer tube locking piece to enable the outer tube locking piece to be kept in the extended state;

the inner needle locking assembly comprises an inner needle locking piece and a fourth elastic element, the inner needle locking piece is movably arranged in the shell assembly and is provided with an inner needle first-stop locking part and an inner needle second-stop locking part which are arranged front and back, the inner needle locking assembly also has an inward contracted state and an extended state, when the inner needle locking piece is in the extended state, the inner needle first-stop locking part can be in locking fit with an inner needle rod support in the first-stop retracted state, the inner needle second-stop locking part can be in locking fit with the inner needle rod support in the second-stop retracted state, and the fourth elastic element is used for acting on the inner needle locking piece to enable the inner needle locking piece to be kept in the extended state.

Further, the outer needle tube support can rotate, the rear end of the outer needle tube support is provided with an outer tube first-stop clamping part and an outer tube second-stop clamping part which are arranged in a staggered mode in the circumferential direction, the outer tube first-stop clamping part is used for being clamped with the outer tube first-stop locking part, the outer tube second-stop clamping part is used for being clamped with the outer tube second-stop locking part, and when the outer needle tube support rotates to a state that the outer tube second-stop clamping part corresponds to the outer tube second-stop locking part, the outer tube first-stop clamping part and the outer tube first-stop locking part are staggered;

the inner needle rod support can rotate, the rear end of the inner needle rod support is provided with an inner needle first-stop clamping portion and an inner needle second-stop clamping portion which are arranged in a staggered mode in the circumferential direction, the inner needle first-stop clamping portion is used for being clamped with the inner needle first-stop locking portion, the inner needle second-stop clamping portion is used for being clamped with the inner needle second-stop locking portion, and when the inner needle rod support rotates to a state that the inner needle second-stop clamping portion corresponds to the inner needle second-stop locking portion, the inner needle first-stop clamping portion and the inner needle first-stop locking portion are staggered.

Further, the first retaining and clamping part of the outer tube, the second retaining and clamping part of the outer tube, the first retaining and locking part of the outer tube, the second retaining and locking part of the outer tube, the first retaining and clamping part of the inner needle, the second retaining and clamping part of the inner needle, the first retaining and locking part of the inner needle and the second retaining and locking part of the inner needle are of inverted tooth structures.

Further, a first unlocking part is arranged at the rear end of the outer tube locking piece, and when the inner needle bar bracket is ejected under the action of the second elastic element, the front end of the inner needle bar bracket pushes the first unlocking part, and the inner needle locking piece in an extending state is changed into a shrinking state through the first unlocking part;

the rear end of the inner needle locking piece is provided with a second unlocking part, the excitation key is arranged at the rear end of the shell assembly in a front-back sliding mode, and can push the second unlocking part when the excitation key moves forward, and the inner needle locking piece in an extending state is driven to be in a shrinking state through the second unlocking part. Further, a locking bolt is movably arranged at the rear end of the shell assembly, and the locking bolt has a passing state and a blocking state;

when the locking bolt is in a blocking state, the locking bolt can block the forward movement of the excitation key, so that the excitation key can not drive the inner needle locking piece to move;

when the locking bolt is in a passing state, the locking bolt does not form a barrier to the forward movement of the excitation key, so that the excitation key can drive the inner needle locking piece to move;

the excitation key is provided with an elastic part, and the elastic part is used for providing elastic force for resetting the excitation key.

Further, the shell assembly comprises an outer shell and an inner shell arranged in the outer shell, the outer needle operating piece and the inner needle operating piece are of annular structures, the outer needle operating piece is connected to the outer shell in a front-back sliding mode, the outer needle operating piece can drive the inner needle operating piece to rotate relative to the outer shell together, the inner needle operating piece is connected to the outer needle operating piece in a front-back sliding mode and connected to the inner shell in a front-back sliding mode in a sleeved mode, and the inner needle operating piece can rotate relative to the inner shell;

the main body of the outer needle tube bracket is positioned in the inner shell, an outer needle tube bracket extension arm is arranged on the main body, and the outer needle tube bracket extension arm penetrates through the inner shell and the inner needle operating piece and is connected with the outer needle operating piece;

the main body of the inner needle bar bracket is positioned in the inner shell, an inner needle bar bracket extension arm is arranged on the main body, and the inner needle bar bracket extension arm penetrates through the inner shell and is connected with the inner needle operation piece.

Further, a first chute and a second chute are respectively arranged on the front and the back of the inner shell;

the first sliding groove is used for being in sliding fit with the extension arm of the outer needle tube bracket, and comprises a first sliding groove first blocking part, a first zero blocking part and a first sliding groove second blocking part, and the outer needle operating piece enables the extension arm of the outer needle tube bracket to be matched with different parts of the first sliding groove by driving the extension arm of the outer needle tube bracket to rotate and move back and forth; when the outer needle assembly is in a first stop retraction state, the outer needle tube bracket extension arm slides to a first chute first stop part; when the outer needle assembly is in a second-gear retraction state, the outer needle tube bracket extension arm slides to a first chute second-gear part; when the outer needle assembly is in an ejecting state, the outer needle tube bracket extension arm slides to a first zero-blocking part;

the second sliding groove is used for being in sliding fit with the inner needle bar support extension arm and comprises a first sliding groove blocking part, a second zero blocking part and a second sliding groove blocking part, and the inner needle operating piece enables the inner needle bar support extension arm to be matched with different parts of the second sliding groove by driving the inner needle bar support extension arm to rotate and move back and forth; when the inner needle assembly is in a first stop retraction state, the inner needle rod bracket extension arm slides to a first stop part of the second chute; when the inner needle assembly is in a second-gear retracting state, the inner needle rod bracket extension arm slides to a second-gear part of the second chute; when the inner needle assembly is in the ejecting state, the inner needle bar bracket extension arm slides to the second zero-blocking part.

Further, the main body of the outer needle operating member extends out of the outer housing and is pressed by a person, the outer needle operating member covers the front end of the inner needle operating member, and when the outer needle operating member is retracted into the outer housing, the inner needle operating member is exposed and is pressed by a person.

Compared with the prior art, the utility model has the beneficial effects that:

1) The utility model has two gears, can switch gears and has strong functions;

2) The gear shifting structure and the gear shifting operation are very simple and visual, and are not easy to operate by mistake;

3) The utility model can be directly adjusted from zero gear to second gear, and the use is more flexible.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is an enlarged view at C in FIG. 2;

FIG. 6 is a schematic view of a partial structure of the present utility model with a portion of the outer shell removed;

FIG. 7 is a schematic view of a partial construction of the outer housing with portions of the outer needle operating member removed in accordance with the present utility model;

FIG. 8 is a partial schematic view of the present utility model with portions of the outer housing, outer needle operating member, inner needle operating member removed;

FIG. 9 is a partial schematic view of the present utility model with portions of the outer housing, outer needle operating member, inner needle operating member, and portions of the inner housing removed;

FIG. 10 is a schematic diagram of the connection structure of the actuation button and the locking bolt according to the present utility model;

FIG. 11 is a schematic view of an outer needle cannula holder according to the present utility model;

FIG. 12 is a second schematic view of an outer needle cannula holder according to the present utility model;

FIG. 13 is a schematic view of an inner needle bar support structure according to the present utility model;

FIG. 14 is a second schematic view of the structure of the inner needle bar bracket according to the present utility model.

Detailed Description

In the description of the present utility model, it should be understood that the terms "one end," "the other end," "the outer side," "the upper," "the inner side," "the horizontal," "coaxial," "the center," "the end," "the length," "the outer end," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1-14, an adjustable novel full-automatic biopsy needle comprises a housing assembly, a compression operation assembly, an outer needle assembly 5, an inner needle assembly 6, an outer needle locking assembly 7, an inner needle locking assembly 8 and an excitation key 9, wherein the compression operation assembly, the outer needle assembly 5, the inner needle assembly 6, the outer needle locking assembly 7, the inner needle locking assembly 8 and the excitation key 9 are cooperatively arranged on the housing assembly.

The inner needle assembly 6 is matched and connected with the outer needle assembly 5, and the outer needle assembly 5 has an ejecting state and two retraction states, wherein the two retraction states are divided into a first-gear retraction state and a second-gear retraction state; the inner needle assembly 6 has an ejected state and two retracted states, which are divided into a first-gear retracted state and a second-gear retracted state. The compression operation assembly is connected with the shell assembly in a front-back sliding way and comprises an outer needle operation piece 3 and an inner needle operation piece 4, the outer needle operation piece 3 is used for driving the outer needle assembly 5 to retract, and the inner needle operation piece 4 is used for driving the inner needle assembly 6 to retract. The outer needle locking assembly 7 is adapted to be in locking engagement with the outer needle assembly 5 in the retracted state. The inner needle locking assembly 8 is adapted to be in locking engagement with the inner needle assembly 6 in the retracted state. The excitation button 9 is used for driving the inner needle locking assembly 8 to move, so that the inner needle locking assembly 8 releases the locking of the inner needle assembly 6, and further the inner needle assembly 6 is extended and reset, when the inner needle assembly 6 is extended and reset, the excitation button can drive the outer needle locking assembly 7 to move, so that the outer needle locking assembly 7 releases the locking of the outer needle assembly 5, and the outer needle assembly 5 is extended and reset.

With continued reference to fig. 6, the housing assembly includes an outer housing 1 and an inner housing 2 fixed in an inner cavity of the outer housing 1, the outer housing 1 includes an upper outer housing and a lower outer housing which are detachably connected, the inner housing 2 includes an upper inner housing and a lower inner housing which are detachably connected, the outer housing 1 and the inner housing 2 are of a tubular structure which is penetrated from front to back, and a lasso 11 for tightly fixing the inner housing 2 is provided at a front end of the inner housing 2.

With continued reference to fig. 9, the outer needle assembly 5 includes an outer needle tube 500, an outer needle tube holder 501 and a first elastic element 502, the outer needle tube 500 is marked with scale marks for prompting the puncture depth, the scale marks should form a ring shape on the outer surface of the outer needle tube 500, the outer needle tube holder 501 is contained in the inner housing 2, the outer wall of the front end of the outer needle tube holder 501 is provided with an outer boss of the outer needle tube holder, two sides of the outer boss of the outer needle tube holder are respectively provided with an outer needle tube holder extension arm 5012, the outer needle tube 500 is fixedly arranged on the outer needle tube holder 501 in a penetrating manner, and the first elastic element 502 is used for providing elasticity for resetting the outer needle assembly 5 from a retracted state to an ejected state.

The first elastic element 502 is preferably a spring, and is directly sleeved on the outer needle tube 500, one end of the first elastic element abuts against a first inner boss on the inner wall of the inner shell 2, and the other end of the first elastic element abuts against an outer boss of the outer needle tube support.

With continued reference to fig. 11 and 12, the rear end of the outer needle tube support 501 has an outer needle tube support locking rod, the rear end of the outer needle tube support locking rod is provided with two outer tube first blocking clamping parts 5010 which are protruded oppositely, two outer tube second blocking clamping parts 5011 which are protruded oppositely are provided, the outer tube first blocking clamping parts 5010 and the outer tube second blocking clamping parts 5011 are arranged in a staggered manner in the circumferential direction, the outer tube first blocking clamping parts 5010 and the outer tube second blocking clamping parts 5011 are of inverted tooth structures, the outer tube first blocking clamping parts 5010 are provided with grooves, and the two outer tube first blocking clamping parts 5010 and the two outer tube second blocking clamping parts 5011 integrally form a conical structure.

With continued reference to fig. 9, the inner needle assembly 6 includes an inner needle bar 600, an inner needle bar support 601, a second elastic element 602 and a fifth elastic element 603, the inner needle bar support 601 is accommodated in the inner housing 2 and is located at the rear end of the outer needle tube support 501, the outer wall of the front end of the inner needle bar support 601 is provided with an outer boss of the inner needle bar support, two sides of the outer boss of the inner needle bar support are respectively provided with an inner needle bar support extension arm 6012, the inner needle bar 600 is cooperatively arranged at the front end of the inner needle bar support 601 and penetrates through the outer needle tube 500, the front end of the inner needle bar 600 is provided with a sampling groove, the second elastic element 602 is used for providing an elastic force for resetting the inner needle assembly 6 from a retracted state to an ejected state, and the fifth elastic element 603 is used for providing an elastic force for resetting after the inner needle bar support 601 is ejected.

The second elastic element 602 and the fifth elastic element 603 are preferably springs, and are respectively arranged at two ends of the inner needle bar bracket 601, the second elastic element 602 is directly sleeved on the inner needle bar 600, the rear end of the second elastic element abuts against a second inner boss on the inner wall of the inner shell 2, the front end of the second elastic element 603 abuts against an outer boss of the outer needle tube bracket, the front end of the fifth elastic element 603 abuts against a third inner boss on the inner wall of the inner shell 2, and the rear end of the fifth elastic element abuts against an outer boss of the outer needle tube bracket.

With continued reference to fig. 13 and 14, the rear end of the inner needle bar support 601 has an inner needle bar support locking rod, the rear end of the inner needle bar support locking rod is provided with two protruding inner needle first blocking clamping portions 6010, two protruding inner needle second blocking clamping portions 6011 are provided, the inner needle first blocking clamping portions 6010 and the inner needle second blocking clamping portions 6011 are arranged in a staggered manner in the circumferential direction, the inner needle first blocking clamping portions 6010 and the inner needle second blocking clamping portions 6011 are of inverted tooth structures, grooves are formed in the inner needle first blocking clamping portions 6010, and the two inner needle first blocking clamping portions 5010 and the two inner needle second blocking clamping portions 5011 integrally form a conical structure.

With continued reference to fig. 4, the outer needle locking assembly 7 has two outer needle locking members 700 and a third elastic element 701, which are respectively mounted on the left and right sides of the inner housing 2, wherein the outer needle locking member 700 is mounted on the side wall of the inner housing 2 in a sliding manner, and has an outer tube first-stop locking portion 7000, an outer tube second-stop locking portion 7001 and a first unlocking portion 7002 which are arranged front and back, the three are of inverted tooth-shaped structures, the inclination direction of the first unlocking portion 7002 is different from the inclination direction of the outer tube first-stop locking portion 7000 and the outer tube second-stop locking portion 7001, the outer tube locking member 700 also has an inward contracted state and an extended state, when the outer tube locking member 700 is in the extended state, the outer tube first-stop locking portion 7000 can be in locking fit with the outer tube first-stop locking portion 5010 of the outer needle tube bracket 501 in the first-stop contracted state, and the outer tube second-stop locking portion 5011 can be in locking fit with the outer tube second-stop locking portion 5011 of the outer tube bracket 501 in the second-stop contracted state, and when the outer tube locking member 700 rotates to the second-stop locking portion 5011 is in the extended state, and the outer tube first-stop locking member 5010 can be prevented from acting on the first locking member 5010 and the outer tube locking member 700 in the extended state. The first unlocking portion 7002 functions such that, when the inner needle bar holder 601 is ejected by the second elastic member 602, the front end thereof can push the first unlocking portion 7002, and the inner needle lock 800 in the extended state is changed to the retracted state by the first unlocking portion 7002.

The outer tube locking member 700 has a protrusion, and the third elastic element 701 is preferably a spring, and is sleeved on the protrusion, one end of the third elastic element abuts against the inner housing 2, and the other end abuts against the main body of the outer tube locking member 700.

With continued reference to fig. 5, the two inner needle locking assemblies 8 are respectively mounted on the left and right sides of the inner housing 2 and located at the rear end of the outer needle locking assembly 7, and include an inner needle locking member 800 and a fourth elastic member 801, wherein the inner needle locking member 800 is mounted on the side wall of the inner housing 2 in a left and right sliding manner, and has an inner needle first-stop locking portion 8000, an inner needle second-stop locking portion 8001 and a second unlocking portion 8002 which are disposed in front and back, and are of inverted tooth-like structures, the second unlocking portion 8002 has a different inclination direction from that of the inner needle first-stop locking portion 8000, and the inner needle locking member 800 also has an retracted state and an extended state, and when the inner needle locking member 800 is in the extended state, the inner needle first-stop locking portion 8000 is capable of locking with the inner needle first-stop locking portion 6010 of the inner needle rod bracket 601 in the first-stop retracted state, and the inner needle second-stop locking portion 8001 is capable of locking with the inner needle second-stop locking portion 6010 in the second-stop locking state, and when the inner needle locking member 800 is in the extended state, the inner needle first-stop locking portion 8000 is capable of locking with the inner needle first-stop locking portion 6010 in the second-stop locking state, and the inner needle second-stop locking member 6011 is prevented from being in the extended state, and the inner needle locking member 800 is kept in the first-stop state. The function of the second unlocking portion 8002 will be explained in the portion where the key 9 is actuated.

The inner needle locking member 800 has a protruding column, and the third elastic element 801 is preferably a spring, and is sleeved on the protruding column, one end of the third elastic element abuts against the inner housing 2, and the other end abuts against the main body of the inner needle locking member 800.

With continued reference to fig. 1, 6 and 7, the outer needle operating member 3 and the inner needle operating member 4 are both of annular structures, the outer needle operating member 3 is slidably connected in the outer housing 1 back and forth, the inner needle operating member 4 is slidably inserted in the outer needle operating member 3 back and forth and is slidably sleeved on the inner housing 2 back and forth, the main body of the outer needle operating member 3 extends out of the outer housing 1 and is axially pressed by a person, the outer needle operating member 3 covers the front end portion of the inner needle operating member 4, and when the outer needle operating member 3 is retracted into the outer housing 1, the inner needle operating member 4 is exposed and is axially pressed by the person.

The third sliding groove 300 is formed in the side wall of the outer needle operating member 3 along the axial direction, the first sliding block 401 is arranged on the outer wall of the inner needle operating member 4 in a protruding mode, the first sliding block 401 is in sliding connection with the third sliding groove 300, the left outer needle operating member 3 and the right outer needle operating member 3 can drive the inner needle operating member 4 to rotate relative to the outer shell 1, the outer shell 1 and the inner shell 2 are fixed, and therefore the inner needle operating member 4 can also rotate relative to the inner shell 2.

The outer needle operating member 3 is in plug-in fit with the outer needle tube holder extension arms 5012 on both sides of the outer needle tube holder 501, so that the outer needle operating member 3 can drive the outer needle tube holder 501 to slide and rotate back and forth.

Similarly, the inner needle operating member 4 is in plug-in fit with the inner needle bar support extension arms 6012 on both sides of the inner needle bar support 601, so that the inner needle operating member 4 can drive the inner needle bar support 601 to slide back and forth and rotate.

In order to realize the connection between the outer needle operating member 3 and the outer needle tube holder extension arm 5012 and the connection between the inner needle operating member 4 and the inner needle bar holder extension arm 6012, in particular, to avoid interference between the inner housing 2 and the outer needle tube holder extension arm 5012 and the inner needle bar holder extension arm 6012, the present utility model further provides the following steps:

as shown in fig. 7 and 8, the inner housing 2 is provided with a first chute 200 and a second chute 201 respectively from front to back, the first chute 200 is provided for the extension arm 5012 of the outer needle tube holder to extend, the second chute 201 is provided for the extension arm 6012 of the inner needle bar holder to extend, the side wall of the inner needle operating member 4 is provided with a fourth chute 400 along the axial direction, and the fourth chute 400 is provided for the extension arm 5012 of the outer needle tube holder to extend and be slidably connected with the extension arm 5012 of the outer needle tube holder.

Wherein, first spout 200 is used for with outer needle tubing support extension arm 5012 sliding fit, and it is including the first spout first fender portion 2000 that links to each other in proper order, first zero fender portion 2001 and first spout second fender portion 2002, the three constitutes the U-shaped structure that the opening set up backward, and the length of first spout second fender portion 2002 is greater than the length of first spout first fender portion 2000, and outer needle operating piece 3 makes outer needle tubing support extension arm 5012 and the cooperation of the different positions of first spout 200 through driving outer needle tubing support extension arm 5012 rotation and fore-and-aft movement.

When the outer needle assembly 5 is in the first stop retracted state, the outer needle cannula holder extension arm 5012 slides to the rear end of the first runner first stop 2000.

When the outer needle assembly 5 is in the second stop retracted state, the outer needle cannula holder extension arm 5012 slides to the rear end of the first chute second stop 2002.

When the outer needle assembly 5 is in the ejected state, the outer needle cannula holder extension arm 5012 slides to the first zero stop 2001.

The second sliding groove 201 is configured to slidingly cooperate with the inner needle bar support extension arm 6012, and includes a first sliding groove blocking portion 2010, a second zero blocking portion 2011, and a second sliding groove second blocking portion 2012 that are sequentially connected, and the three forms a U-shaped structure with an opening disposed backward, the length of the second sliding groove second blocking portion 2012 is greater than that of the first sliding groove blocking portion 2010, and the inner needle operating member 4 drives the inner needle bar support extension arm 6012 to rotate and move forward and backward, so that the inner needle bar support extension arm 6012 cooperates with different portions of the second sliding groove 201.

When the inner needle assembly 6 is in the first retracted state, the inner needle shaft support extension arm 6012 slides to the rear end of the second chute first catch 2010.

When the inner needle assembly 6 is in the second stop retracted state, the inner needle bar carrier extension arm 6012 slides to the rear end of the second chute second stop 2012.

When the inner needle assembly 6 is in the ejected state, the inner needle bar carrier extension arm 6012 slides to the second zero stop 2011.

With continued reference to fig. 9 and 10, the excitation key 9 is slidably mounted on the rear end port of the outer housing 1, and the outer wall of the excitation key 9 has a boss structure for limiting connection with the outer housing 1, so that the excitation key 9 is prevented from falling off, and when the excitation key moves forward, the second unlocking portion 8002 can be pushed, and the inner needle locking member 800 in an extended state is driven to be in a retracted state by the second unlocking portion 8002.

Specifically, the front end of the excitation key 9 has an excitation rod, the left and right sides of the excitation rod have elastic parts 900, the elastic parts 900 are preferably inclined rod structures, the front end of the excitation rod has an excitation wedge 901, the second unlocking part 8002 is pushed by the excitation wedge 901 to retract the inner needle locking member 800, and the elastic parts 900 are used for propping against the stop blocks on the outer shell 1 so as to provide the elastic force required by resetting the excitation key 9.

In addition, in order to prevent the misoperation of the excitation key 9 and make the puncture sampling process safer, the utility model also provides the following steps: the locking bolt 10 is arranged at the rear end of the outer shell body 1 in a transversely sliding insertion manner, corresponding openings are respectively formed in the left side and the right side of the rear end of the outer shell body 1, any end of the locking bolt 10 can extend out of the outer shell body 1 through sliding so as to be pressed by a person, and a corresponding limiting structure is also arranged on the locking bolt 10 so as to prevent the locking bolt 10 from falling off and being excessively pressed. The middle part of the locking bolt 10 is provided with a travel groove 1000, the actuating rod of the actuating key 9 is provided with a safety stop 902, and the locking bolt 10 is provided with a passing state and a blocking state: in a passing state, namely, the locking bolt 10 slides to a position corresponding to the travel groove 1000 and the safety block 902, when the trigger button 9 is pressed, the safety block 902 is inserted into the travel groove 1000, and the locking bolt 10 does not block the forward movement of the trigger button 9, so that the trigger button 9 can drive the inner needle locking piece 800 to move; in the blocking state, that is, the locking bolt 10 slides to a position where the stroke groove 1000 does not correspond to the safety block 902, when the trigger button 9 is pressed, the safety block 902 bumps into the locking bolt 10 and cannot be inserted into the stroke groove 1000, so that the locking bolt 10 forms a blocking for the forward movement of the trigger button 9, and the trigger button 9 cannot drive the inner needle locking piece 800 to move.

The sliding connection of the locking bolt 10 with the outer housing 1 is slightly interference, so that the locking bolt 10 does not slide accidentally.

In order to facilitate gear adjustment, the utility model also provides an arrow mark on the outer surface of the outer needle operating piece 3, wherein the arrow mark is a triangular arrow in fig. 1, and a first gear mark and a second gear mark are arranged on the outer surface of the outer shell 1, wherein the first gear mark is 10mm in fig. 1, and the second gear mark is 10mm in fig. 1.

The procedure for performing a surgical procedure using a first stop in accordance with the present utility model is described as follows:

the first step: rotating the outer needle operating member 3 to a position where the arrow mark is aligned with the first stop mark, at this time, the outer needle tube bracket extension arm 5012 slides from the first zero stop portion 2001 to the first chute first stop portion 2000, then pressing the outer needle operating member 3, and the outer needle operating member 3 drives the outer needle tube bracket 501 to move backward until the first stop retraction state, and the outer tube first stop clamping portion 5010 of the outer needle tube bracket 501 is clamped with the outer tube first stop locking portion 7000 of the outer tube locking member 700;

and a second step of: pressing the inner needle operating member 4, the inner needle operating member 4 drives the inner needle bar support 601 to move backwards until the inner needle bar support 601 is in a first-stop retraction state, and the inner needle first-stop clamping part 6010 of the inner needle bar support 601 is clamped with the inner needle first-stop locking part 8000 of the inner needle locking member 800;

and a third step of: the outer needle tube 500 is inserted into tissues, the excitation key 9 is pressed, the excitation key 9 drives the inner needle locking piece 800 to retract, the inner needle locking piece 800 is unlocked with the inner needle bar support 601, the inner needle bar support 601 is ejected under the action of the second elastic element 602, the front end of the inner needle bar support 601 drives the outer tube locking piece 700 to retract through impact, the outer tube locking piece 700 is unlocked with the outer needle tube support 501, the inner needle bar support 601 is reset under the action of the fifth elastic element 603 after being ejected, the outer needle tube support 501 is prevented from being always contacted with the outer tube locking piece 700, the outer needle tube support 501 is ejected under the action of the first elastic element 502, and the outer needle tube 500 unlocked after sliding through the inner needle bar 600 cuts the sampled tissues.

If the two-gear surgical operation is adopted, the outer needle operating member 3 is only required to be rotated to the position of the arrow mark aligned with the two-gear mark during the first step, and the operation is very convenient.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The adjustable novel full-automatic puncture biopsy needle is characterized by comprising a shell component, and a compression operation component, an outer needle component (5), an inner needle component (6), an outer needle locking component (7), an inner needle locking component (8) and an excitation key (9) which are arranged on the shell component in a matching way;

the inner needle assembly (6) is connected with the outer needle assembly (5) in a matched mode, and the outer needle assembly (5) is provided with an ejecting state and two retraction states, wherein the two retraction states are divided into a first-gear retraction state and a second-gear retraction state; the inner needle assembly (6) is provided with an ejecting state and two retraction states, wherein the two retraction states are divided into a first-gear retraction state and a second-gear retraction state;

the compression operation assembly is connected with the shell assembly in a front-back sliding manner and comprises an outer needle operation piece (3) and an inner needle operation piece (4), the outer needle operation piece (3) is used for driving the outer needle assembly (5) to retract, and the inner needle operation piece (4) is used for driving the inner needle assembly (6) to retract;

the outer needle locking component (7) is used for being in locking fit with the outer needle component (5) in a retracted state;

the inner needle locking component (8) is used for being in locking fit with the inner needle component (6) in a retracted state;

the excitation button (9) is used for driving the inner needle locking assembly (8) to move, so that the inner needle locking assembly (8) releases the locking of the inner needle assembly (6), and then the inner needle assembly (6) is extended and reset, when the inner needle assembly (6) is extended and reset, the excitation button can drive the outer needle locking assembly (7) to move, and the outer needle locking assembly (7) releases the locking of the outer needle assembly (5), so that the outer needle assembly (5) is extended and reset.

2. The adjustable novel full-automatic biopsy needle according to claim 1, wherein the outer needle assembly (5) comprises an outer needle tube (500), an outer needle tube support (501) and a first elastic element (502), the outer needle tube support (501) is slidably mounted in the shell assembly back and forth, the outer needle tube (500) is fixedly arranged on the outer needle tube support (501) in a penetrating manner, and the first elastic element (502) is used for providing elastic force for resetting the outer needle assembly (5) from a retracted state to an ejected state;

the inner needle assembly (6) comprises an inner needle rod (600), an inner needle rod support (601), a second elastic element (602) and a fifth elastic element (603), wherein the inner needle rod support (601) is mounted in the shell assembly in a front-back sliding mode and located at the rear end of the outer needle tube support (501), the inner needle rod (600) is arranged at the front end of the inner needle rod support (601) in a matched mode and penetrates through the outer needle tube (500) in a front-back penetrating mode, a sampling groove is formed in the front end of the inner needle rod (600), the second elastic element (602) is used for providing elastic force for the inner needle assembly (6) to return to an ejecting state from a retracting state, and the fifth elastic element (603) is used for providing elastic force for returning after the inner needle rod support (601) is ejected.

3. The adjustable novel full-automatic biopsy needle according to claim 2, wherein the outer needle locking assembly (7) comprises an outer tube locking member (700) and a third elastic element (701), the outer tube locking member (700) being movably arranged in the housing assembly, having an outer tube one-stop locking portion (7000) and an outer tube two-stop locking portion (7001) arranged front and back, and further having a retracted state and an extended state, when the outer tube locking member (700) is in the extended state, the outer tube one-stop locking portion (7000) being capable of locking engagement with the outer needle cannula holder (501) in the first-stop retracted state, the outer tube two-stop locking portion (7001) being capable of locking engagement with the outer needle cannula holder (501) in the second-stop retracted state, the third elastic element (701) being used for acting on the outer tube locking member (700) to keep the outer tube locking member (700) in the extended state;

the inner needle locking assembly (8) comprises an inner needle locking piece (800) and a fourth elastic element (801), the inner needle locking piece (800) is movably arranged in the shell assembly, the inner needle locking assembly is provided with an inner needle first-stop locking part (8000) and an inner needle second-stop locking part (8001) which are arranged front and back, the inner needle locking assembly is further provided with an inner shrinkage state and an extension state, when the inner needle locking piece (800) is in the extension state, the inner needle first-stop locking part (8000) can be in locking fit with an inner needle rod support (601) in the first-stop shrinkage state, the inner needle second-stop locking part (8001) can be in locking fit with the inner needle rod support (601) in the second-stop shrinkage state, and the fourth elastic element (801) is used for acting on the inner needle locking piece (800) to enable the inner needle locking piece (800) to be kept in the extension state.

4. The adjustable novel full-automatic biopsy needle according to claim 3, wherein the outer needle tube support (501) can rotate, an outer tube first-blocking clamping part (5010) and an outer tube second-blocking clamping part (5011) are arranged at the rear end of the outer needle tube support, the outer tube first-blocking clamping part (5010) is used for being clamped with an outer tube first-blocking locking part (7000), the outer tube second-blocking clamping part (5011) is used for being clamped with an outer tube second-blocking locking part (7001), and when the outer needle tube support (501) rotates to a state corresponding to the outer tube second-blocking clamping part (5011), the outer tube first-blocking clamping part (5010) is staggered with the outer tube first-blocking locking part (7000);

the inner needle bar support (601) can rotate, an inner needle first-stop clamping portion (6010) and an inner needle second-stop clamping portion (6011) are arranged at the rear end of the inner needle bar support, the inner needle first-stop clamping portion (6010) is used for being clamped with an inner needle first-stop locking portion (8000), the inner needle second-stop clamping portion (6011) is used for being clamped with an inner needle second-stop locking portion (8001), and when the inner needle bar support (601) rotates to a state that the inner needle second-stop clamping portion (6011) corresponds to the inner needle second-stop locking portion (8001), the inner needle first-stop clamping portion (6010) and the inner needle first-stop locking portion (8000) are staggered.

5. The adjustable novel full-automatic biopsy needle according to claim 4, wherein the outer tube first-stop clamping portion (5010), the outer tube second-stop clamping portion (5011), the outer tube first-stop locking portion (7000), the outer tube second-stop locking portion (7001), the inner needle first-stop clamping portion (6010), the inner needle second-stop clamping portion (6011), the inner needle first-stop locking portion (8000) and the inner needle second-stop locking portion (8001) are of inverted tooth structures.

6. The adjustable novel full-automatic puncture biopsy needle according to any one of claims 3-5, wherein a first unlocking part (7002) is arranged at the rear end of the outer tube locking member (700), and when the inner needle bar bracket (601) is ejected under the action of the second elastic element (602), the front end of the inner needle bar bracket pushes the first unlocking part (7002), and the inner needle locking member (800) in an extended state is changed into a retracted state through the first unlocking part (7002);

the rear end of the inner needle locking piece (800) is provided with a second unlocking part (8002), the excitation key (9) is arranged at the rear end of the shell assembly in a front-back sliding mode, and can push the second unlocking part (8002) when the excitation key moves forwards, and the inner needle locking piece (800) in an extending state is driven to be in a shrinking state through the second unlocking part (8002).

7. The adjustable novel full-automatic biopsy needle according to claim 6, wherein a locking bolt (10) is movably arranged at the rear end of the shell assembly, and the locking bolt (10) has a passing state and a blocking state;

when the locking bolt (10) is in a blocking state, the locking bolt can block the forward movement of the excitation key (9), so that the excitation key (9) can not drive the inner needle locking piece (800) to move;

when the locking bolt (10) is in a passing state, the locking bolt does not block the forward movement of the excitation key (9), so that the excitation key (9) can drive the inner needle locking piece (800) to move;

the excitation key (9) is provided with an elastic part (900) which is used for providing elastic force for resetting the excitation key (9).

8. The adjustable novel full-automatic biopsy needle according to any one of claims 2-5, wherein the housing assembly comprises an outer housing (1) and an inner housing (2) arranged in the outer housing (1), the outer needle operating member (3) and the inner needle operating member (4) are of annular structures, the outer needle operating member (3) is connected to the outer housing (1) in a front-back sliding manner, the outer needle operating member (3) can drive the inner needle operating member (4) to rotate together relative to the outer housing (1), the inner needle operating member (4) is connected to the outer needle operating member (3) in a front-back sliding manner and is connected to the inner housing (2) in a front-back sliding manner, and the inner needle operating member (4) can rotate relative to the inner housing (2);

the main body of the outer needle tube bracket (501) is positioned in the inner shell (2), an outer needle tube bracket extension arm (5012) is arranged on the main body, and the outer needle tube bracket extension arm (5012) passes through the inner shell (2) and the inner needle operating piece (4) and is connected with the outer needle operating piece (3);

the main body of the inner needle bar support (601) is positioned in the inner shell (2), an inner needle bar support extension arm (6012) is arranged on the main body, and the inner needle bar support extension arm (6012) penetrates through the inner shell (2) and is connected with the inner needle operating piece (4).

9. The adjustable novel full-automatic puncture biopsy needle according to claim 8, wherein a first chute (200) and a second chute (201) are respectively arranged on the inner shell (2) front and back;

the first sliding groove (200) is used for being in sliding fit with the outer needle tube support extension arm (5012), the first sliding groove first blocking part (2000), the first zero blocking part (2001) and the first sliding groove second blocking part (2002), and the outer needle operating piece (3) enables the outer needle tube support extension arm (5012) to be matched with different parts of the first sliding groove (200) by driving the outer needle tube support extension arm (5012) to rotate and move forwards and backwards; when the outer needle assembly (5) is in a first-stop retraction state, the outer needle tube bracket extension arm (5012) slides to a first chute first-stop part (2000); when the outer needle assembly (5) is in a second-gear retraction state, the outer needle tube bracket extension arm (5012) slides to a first sliding groove second-gear part (2002); when the outer needle assembly (5) is in an ejected state, the outer needle tube bracket extension arm (5012) slides to a first zero stop (2001);

the second sliding chute (201) is used for being in sliding fit with the inner needle bar support extension arm (6012), and comprises a second sliding chute first blocking part (2010), a second zero blocking part (2011) and a second sliding chute second blocking part (2012), and the inner needle operation piece (4) enables the inner needle bar support extension arm (6012) to be matched with different parts of the second sliding chute (201) by driving the inner needle bar support extension arm (6012) to rotate and move forwards and backwards; when the inner needle assembly (6) is in a first-gear retracted state, the inner needle bar bracket extension arm (6012) slides to a second chute first-gear part (2010); when the inner needle assembly (6) is in a second-gear retracting state, the inner needle bar bracket extension arm (6012) slides to a second chute second-gear part (2012); when the inner needle assembly (6) is in the ejected state, the inner needle bar support extension arm (6012) slides to the second zero stop (2011).

10. The adjustable novel full-automatic biopsy needle according to claim 8, wherein the main body of the outer needle operation member (3) extends out of the outer housing (1) and is pressed by a person, the outer needle operation member (3) covers the front end of the inner needle operation member (4), and when the outer needle operation member (3) is retracted into the outer housing (1), the inner needle operation member (4) is exposed and pressed by the person.