CN107184251B

CN107184251B - Disposable safety multipurpose surgical knife

Info

Publication number: CN107184251B
Application number: CN201710581370.2A
Authority: CN
Inventors: 王毅; 司涛
Original assignee: Anhui Yingchuang Medical Technology Co ltd
Current assignee: Anhui Yingchuang Medical Technology Co ltd
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2023-04-21
Anticipated expiration: 2037-07-17
Also published as: CN107184251A

Abstract

The invention discloses a disposable safe multipurpose scalpel, and relates to a disposable scalpel, in particular to a safe scalpel with a telescopic blade length, which is manufactured by utilizing the internal structure of the disposable scalpel. The cutter comprises a blade, an inner core, a cutter handle and a spring, wherein an inner core cutter outlet lock catch, an inner core cutter collecting lock catch and an inner core button are sequentially arranged from the middle part of the inner core to the tail part of the inner core, and the inner core button is arranged at the tail part of the inner core; the end part of the inner core is provided with a blade assembly limit clamping block, the middle rear part of the blade is provided with a blade assembly groove, and the blade assembly limit clamping block is clamped and inserted in the blade assembly groove; the spring is inserted on a spring plug arranged at the rear part of the inner core; the edge of the upper part of the front end of the knife handle is provided with a knife retracting button; a positioning notch is arranged at the rear part of the retracting button; a limiting notch is arranged at the lower edge of the tail part of the cutter handle; a cutter handle inner notch is arranged in the tail part of the cutter handle; and graduated scales are arranged at the edges of the two sides of the rear part of the knife handle. The invention has simple structure, safe use, convenient operation, short whole length of the scalpel and convenient storage and packaging.

Description

Disposable safety multipurpose surgical knife

Technical Field

The invention discloses a disposable safe multipurpose scalpel, and relates to a disposable scalpel, in particular to a safe scalpel with a telescopic blade length, which is manufactured by utilizing the internal structure of the disposable scalpel.

Background

Since the advent of modern surgery, scalpels have been the most important fundamental tool in medical devices. From the practical application point of view, the surgical knife used in China is assembled by medical staff before the operation by the blade and the knife handle.

In the actual use process of the existing scalpel, the following defects are found:

1) The mounting and dismounting operations are troublesome and the risks of hurting people and falling exist;

2) The storage cannot be safely carried out;

3) Medical staff is easily scratched in the process of transferring among the medical staff;

4) The handle is high in disinfection cost and pollutes the environment;

5) Single function (only cutting function).

The prior patent application number is 201510510000.0 and the patent publication number is 105125260A discloses a one-time use safety scalpel which comprises a blade, a scalpel handle and a scalpel sleeve, wherein the scalpel sleeve is formed by connecting two matched protecting bodies in a buckling manner, the scalpel handle is arranged at the rear end of the scalpel sleeve, a sliding seat capable of sliding back and forth along the protecting bodies is matched in a cavity in the scalpel sleeve, a slit capable of allowing the blade to extend out is reserved at the front end of the protecting body, a clamping cutter protruding block is arranged on the side surface of the front end of the sliding seat, and a clamping hole is correspondingly formed in the blade and is clamped on the clamping cutter protruding block through the clamping hole; a plurality of tooth grooves are formed in any one of the protection bodies and positioned at the top of the cavity, the tooth grooves are distributed along the length direction of the cutter sleeve, an elastic plate is correspondingly arranged on the sliding seat, tooth-shaped protrusions are arranged at the tail ends of the elastic plate, the tooth-shaped protrusions correspond to the tooth grooves, a pressing handle is connected to the middle of the elastic plate, and the pressing handle extends out of a long groove at the upper side of the cutter sleeve; the tail end of the sliding seat is provided with an elastic hook head, the elastic hook head extends towards the protection body on one side, the corresponding protection body is provided with a locking clamping block, the elastic hook head is wedge-shaped towards the rear end of the knife handle, and when the handle is pushed and pressed backwards, the elastic hook head can cross the locking clamping block and hook the rear side of the locking clamping block. The defects are that: 1. medical staff can still be accidentally injured in the transmission process in the use process; 2. the surgical knife is locked due to the fact that the error pressing still occurs in the use process, the operation process is affected, and the treatment time of a patient is delayed; 3. a single scalpel function; 4. the surgical procedure is scaleless.

Disclosure of Invention

The invention aims to provide a disposable safe multipurpose surgical knife aiming at the defects, improves the prior art from the aspects of safety and convenience in use of the surgical knife and realizes functions of measurement, shearing, storage and the like.

The invention is realized by adopting the following technical scheme:

the disposable safe multipurpose surgical knife comprises a blade, an inner core, a knife handle and a spring, wherein an inner core knife outlet lock catch, an inner core knife collecting lock catch and an inner core button are sequentially arranged from the middle part of the inner core to the tail part of the inner core; the end part of the inner core is provided with a blade assembly limit clamping block, the middle and rear parts of the blade are provided with blade assembly grooves, the blade assembly limit clamping block is clamped and inserted in the blade assembly grooves, and the blade is relatively fixed at the end part of the inner core; the spring is inserted on a spring plug arranged at the rear part of the inner core;

the edge of the upper part of the front end of the knife handle is provided with a knife retracting button; the rear part of the cutter receiving button is provided with a positioning notch for clamping the inner core cutter receiving lock catch so as to limit the extending position of the inner core; a limiting notch is arranged at the lower edge of the tail part of the cutter handle and used for limiting the initial position of the inner core button; the tail part of the cutter handle is provided with an inner cutter handle notch which is used for clamping the inner core positioning lock catch when the inner core is at the initial position;

the two side edges of the rear part of the cutter handle are provided with graduated scales, the graduation of the graduated scales close to the edge of the tail part of the cutter handle is 0, and the graduation of the graduated scales increases gradually from the tail part of the cutter handle to the middle part of the cutter handle;

the tool handle is a bilateral symmetry part, an inner core mounting groove is formed in the inner edge of the rear portion of the tool handle, and the inner core is inserted into the tool handle through the inner core mounting groove; the inner core button at the tail part of the inner core is propped against the limit notch at the tail part of the cutter handle; when the inner core is positioned at the initial position, the blade is retracted in the cutter handle, and the inner core positioning lock catch is clamped at the left side of the notch in the cutter handle, so that the position of the inner core in the cutter handle is relatively fixed.

The end part of the knife handle is provided with the scissors groove, the thread can be placed into the scissors groove when the needle is used for thread reduction, the inner core button is pressed, the sharp knife head of the knife blade extends out of the scissors groove, and the thread is rapidly sheared off to replace the function of the operation scissors.

The blade assembly limit clamping block is fixedly arranged at the end part of the inner core and can adopt a hot melting mode.

The scale of one side scale arranged on the knife handle is English, and the scale of the other side scale is metric.

The lower part of the knife handle is also provided with a spring mounting groove corresponding to the spring mounting position, so that the spring is convenient to mount.

In order to further ensure reliable holding, the knife handle is made of high polymer materials and is environment-friendly, a plurality of anti-slip raised strips parallel to each other are arranged on the upper side and the lower side of the knife handle, and the surface roughness of the knife handle is increased by adopting frosting treatment.

As a further improvement of the invention, the whole design thickness of the scalpel is 3-15 mm, and the sight is not blocked during operation.

When the spring is produced and assembled, after the spring is inserted into the spring mounting groove, the inner core is inserted into the cutter handle through the inner core mounting groove until the inner core button at the tail part of the inner core abuts against the limit notch at the tail part of the cutter handle, and the spring socket is inserted into the spring; when the inner core is positioned at the initial position, the blade is retracted in the cutter handle, and meanwhile, the inner core positioning lock catch is propped against the left side of the notch in the cutter handle, so that the position of the inner core is relatively fixed in the cutter handle.

When the invention is used, the invention has three states:

1. in a safe storage state, the blade is arranged in the cutter handle, and the inner core positioning lock catch is propped against the inner groove opening of the cutter handle, so that the position of the inner core is relatively fixed in the cutter handle, and the inner core is fixed by the self-locking device;

2. when the inner core button is pressed and pushed in the operating state of the scalpel, the spring is stressed to shrink, the inner core positioning lock catch is separated from the left side of the inner groove opening of the scalpel handle, the inner core retracting lock catch moves to the right and is clamped at the position of the positioning groove opening of the scalpel handle, and at the moment, the blade extends out towards the head of the scalpel handle; the operator clamps the handle with the thumb and the middle finger, presses the retracting button with the index finger, and then the retracting button is clamped on the limiting clamping groove to fix the inner core at the inner core cutter outlet position, and the inner core retracting lock catch is separated from the positioning notch; when the knife is required to be retracted, an index finger for pressing a knife retracting button is loosened, the knife retracting button is loosened upwards, meanwhile, the spring is loosened, the inner core is automatically pulled back, the knife blade is retracted into the knife handle, and a limiting notch at the rear end of the knife handle is used for blocking the inner core button, so that the inner core cannot be excessively retracted; thereby effecting extension and retraction of the blade.

In the use process, when the user transmits to other people after using up, the knife retracting button pressed by the index finger is released, and the knife blade is retracted into the knife handle, so that other people cannot be accidentally injured.

3. In the state of the surgical scissors, the wire to be cut by the scissors groove at the front end of the knife handle is placed in the scissors groove, and the inner core button is pressed to enable the blade to extend out of the scissors groove, so that the function of the surgical scissors can be realized, and convenience and safety are realized.

The disposable multipurpose safety scalpel has the advantages of simple structure, safe use, convenient operation, short whole length and convenient storage and packaging; when the knife is used and operated, the inner core button is only needed to be pressed, the blade extends out of the front end of the knife handle and is fixed by the limiting device of the inner core and the knife handle, the operation can be performed, the blade can be retracted by pressing the knife retracting button after the operation is finished, and the operation is safe, reliable, simple and convenient. In addition, a scissor groove is formed in the front end of the knife handle, a thread can be placed in the scissor groove when the needle is used for reducing the thread, the inner core button is pressed, and the knife head stretches out of the scissor groove to rapidly cut the thread to replace the function of the surgical scissors. The knife handle is provided with the scale marks, so that the requirement on dimension grasping during operation can be met conveniently.

Drawings

FIG. 1 is a schematic view of the structure of the scalpel of the present invention 1;

FIG. 2 isbase:Sub>A sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of the structure of the scalpel of the present invention 2;

FIG. 4 is a front cross-sectional view of the scalpel of the present invention;

FIG. 5 is a schematic view of the structure of the scalpel of the present invention;

FIG. 6 is a schematic diagram of the burst installation of the core structure of the present invention;

FIG. 7 is a front view of the structure of the tool shank of the present invention;

FIG. 8 is a rear view of the shank structure of the present invention;

wherein: 1. the knife comprises a knife blade, 2 knife handles, 2-1, knife retracting buttons, 2-2, knife handle inner notches, 2-3, limiting notches, 2-4, a graduated scale, 2-5, a positioning notch, 3, an inner core, 3-1, an inner core knife retracting lock catch, 3-2, an inner core positioning lock catch, 3-3, an inner core button, 3-4, a knife blade assembly limiting clamping block, 3-5, a limiting clamping groove, 3-6, a knife blade assembly groove, 4, a spring, 4-1, a spring plug, 5 and a scissor groove.

Detailed Description

Referring to fig. 1-8, the disposable safety multipurpose surgical knife comprises a blade 1, an inner core 3, a knife handle 2 and a spring 4, wherein an inner core retracting lock catch 3-1, an inner core positioning lock catch 3-2 and an inner core button 3-3 are sequentially arranged from the middle part to the tail part of the inner core 3, and the inner core button 3-3 is arranged at the tail part of the inner core 3; the end part of the inner core 3 is provided with a blade assembly limit clamping block 3-4, the middle and rear part of the blade 1 is provided with a blade assembly groove 3-6, the blade assembly limit clamping block 3-4 is clamped and inserted in the blade assembly groove 3-6, and the blade 1 is relatively fixed at the end part of the inner core 3; the spring 4 is inserted on the spring plug 4-1 arranged at the rear part of the inner core 3;

the edge of the upper part of the front end of the knife handle 2 is provided with a knife retracting button 2-1; a positioning notch 2-5 is arranged at the rear part of the cutter receiving button 2-1 and is used for clamping the inner core cutter receiving lock catch 3-1, so that the extending position of the inner core 3 is limited; a limit notch 2-3 is arranged at the lower edge of the tail part of the knife handle 2 and is used for limiting the initial position of the inner core button 3-3; a cutter handle inner notch 2-2 is arranged in the tail part of the cutter handle 2 and is used for clamping the inner core positioning lock catch 3-2 when the inner core 3 is at the initial position;

the two side edges of the rear part of the knife handle 2 are provided with scales 2-4, the scale near the edge of the tail part of the knife handle 2 is 0, and the scales of the scales 2-4 are gradually increased from the tail part of the knife handle 2 to the middle part of the knife handle 2;

the tool shank 2 is a bilateral symmetry part, an inner core mounting groove is formed in the inner edge of the rear part of the tool shank 2, and the inner core 3 is inserted into the tool shank 2 through the inner core mounting groove; the inner core button 3-3 at the tail of the inner core 3 is propped against the limit notch 2-3 at the tail of the knife handle 2; when the inner core 3 is positioned at the initial position, the blade 1 is retracted in the cutter handle 2, and the inner core positioning lock catch 3-2 is clamped at the left side of the notch 2-2 in the cutter handle, so that the position of the inner core 3 in the cutter handle 2 is relatively fixed.

The end part of the knife handle 2 is provided with the scissors groove 5, so that the thread can be placed into the scissors groove 5 when the suture needle is used for thread reduction, the inner core button 3-3 is pressed, the sharp knife head of the knife blade 1 extends out of the scissors groove 5, and the thread is rapidly cut off to replace the function of the surgical scissors.

The blade assembly limit clamping blocks 3-4 are thermally fused at the end part of the inner core.

The scales of the scales 2-4 on one side of the knife handle 2 are English, and the scales of the scales on the other side are metric.

The lower part of the knife handle 2 is also provided with a spring mounting groove corresponding to the spring 4, so that the spring is convenient to mount.

When the tool is operated, the inner core button 3-3 is pressed and pushed, the spring 4 is stressed to shrink, and when the inner core positioning lock catch 3-2 is automatically buckled on the right side of the notch 2-2 in the tool handle, the extending position of the outer core blade is fixed. The thumb and the middle finger are arranged on the knife handle 2, the index finger presses the knife retracting button 2-1, and at the moment, the knife retracting button 2-1 is well clamped on the inner core knife retracting lock catch 3-2, so that the knife outlet position of the inner core is effectively fixed, and the knife outlet position cannot move forwards or backwards. When the knife is retracted, only the knife retracting button 2-1 pressed by the index finger is required to be released, and the knife retracting button 2-1 upwards releases the inner core knife retracting lock catch 3-1. At the moment, the inner core 3 of the spring 4 stretching stress belt automatically pulls back to enable the scalpel 1 to automatically retract into the scalpel handle 2, and at the moment, the inner core is pulled back by the spring and is limited by the limiting notch 2-3 of the scalpel handle 2, so that the inner core 3 is prevented from being ejected out of the scalpel handle 2. Realizes that the scalpel 1 can be in two working states of extension and retraction relative to the front port of the scalpel handle 2. In the use process, when a user transmits the finished product to other people, the blade can not accidentally injure the person in the cutter handle. In addition, a scissors groove 5 is arranged at the front end of the knife handle 2, so that a thread can be placed into the scissors groove 5 when the stitching needle is used for reducing the thread, the inner core button 3-3 is pressed, and the knife head extends out of the scissors groove to rapidly cut the thread to replace the function of surgical scissors. The knife handle is provided with the graduated scale 2-4, which is convenient for the requirement of dimension grasping during operation.

Claims

1. A disposable safety multipurpose surgical knife, characterized in that: the cutter comprises a blade, an inner core, a cutter handle and a spring, wherein an inner core cutter outlet lock catch, an inner core cutter collecting lock catch and an inner core button are sequentially arranged from the middle part of the inner core to the tail part of the inner core, and the inner core button is arranged at the tail part of the inner core; the end part of the inner core is provided with a blade assembly limit clamping block, the middle and rear parts of the blade are provided with blade assembly grooves, the blade assembly limit clamping block is clamped and inserted in the blade assembly grooves, and the blade is relatively fixed at the end part of the inner core; the spring is inserted on a spring plug arranged at the rear part of the inner core; the edge of the upper part of the front end of the knife handle is provided with a knife retracting button; the rear part of the cutter receiving button is provided with a positioning notch for clamping the inner core cutter receiving lock catch so as to limit the extending position of the inner core; a limiting notch is arranged at the lower edge of the tail part of the cutter handle and used for limiting the initial position of the inner core button; the tail part of the cutter handle is provided with an inner cutter handle notch which is used for clamping the inner core positioning lock catch when the inner core is at the initial position; the two side edges of the rear part of the cutter handle are provided with graduated scales, the graduation of the graduated scales close to the edge of the tail part of the cutter handle is 0, and the graduation of the graduated scales increases gradually from the tail part of the cutter handle to the middle part of the cutter handle; the tool handle is a bilateral symmetry part, an inner core mounting groove is formed in the inner edge of the rear portion of the tool handle, and the inner core is inserted into the tool handle through the inner core mounting groove; the inner core button at the tail part of the inner core is propped against the limit notch at the tail part of the cutter handle; when the inner core is positioned at the initial position, the blade is retracted in the cutter handle, the inner core positioning lock catch is clamped at the left side of the notch in the cutter handle, so that the position of the inner core in the cutter handle is relatively fixed, a scissor groove is formed in the end part of the cutter handle, and the blade assembling limit clamping block is fixedly arranged at the end part of the inner core.

2. The disposable safety multipurpose surgical knife of claim 1, wherein: the scale of one side scale arranged on the knife handle is English, and the scale of the other side scale is metric.

3. The disposable safety multipurpose surgical knife of claim 1, wherein: the lower part of the knife handle is also provided with a spring mounting groove corresponding to the spring mounting position, so that the spring is convenient to mount.

4. The disposable safety multipurpose surgical knife of claim 1, wherein: in order to further ensure reliable holding, the upper side and the lower side of the knife handle are provided with anti-slip convex strips which are parallel, and the outer surface of the knife handle is subjected to frosting treatment to increase the surface roughness.

5. The disposable safety multipurpose surgical knife of claim 1, wherein: the whole design thickness of the scalpel is 3-15 mm, and the sight is not blocked during operation.