CN219270857U

CN219270857U - Circumferential adjusting device for endoscope tip

Info

Publication number: CN219270857U
Application number: CN202223372147.2U
Authority: CN
Inventors: 顾晴康; 华嘉伦; 谢文亮
Original assignee: Hunan Weidekang Medical Technology Co ltd
Current assignee: Hunan Weidekang Medical Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-30
Anticipated expiration: 2032-12-14

Abstract

The utility model provides a circumferential adjusting device for a front end part of an endoscope, belonging to the technical field of endoscope equipment; the device comprises a hollow rotating shaft, a synchronous knob and a mounting shell, wherein one end of the hollow rotating shaft is rotationally connected with the mounting shell, the other end of the hollow rotating shaft is connected with the synchronous knob, and a hollow channel is arranged in the hollow rotating shaft and used for placing an insertion tube; the device can be installed in an endoscope, circumferential angle adjustment of the front end part is achieved, the device is controlled through an external synchronous knob, the device is efficient and quick, and the device is prevented from being damaged due to overlarge torsion angle by adopting a limiting structure.

Description

Circumferential adjusting device for endoscope tip

Technical Field

The utility model relates to the technical field of endoscope equipment, in particular to a circumferential adjusting device for a front end part of an endoscope.

Background

Endoscopes are detection instruments that integrate traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, etc., and can be accessed orally into the stomach or through other natural tunnels. Since an X-ray-invisible lesion can be seen by an endoscope, the endoscope plays a very important role in medical diagnosis. The endoscope is composed of a tip, an insertion tube, an operation portion, and a connection portion. The front end and the insertion tube enter through a natural cavity of a human body, a doctor holds the operation part to operate, the position of the front end of the electronic soft mirror in the human body is controlled, the connecting part is connected with the camera shooting light source system, and an image signal acquired by the front end is transmitted out of an image.

In the working process, the front end and the insertion tube enter from a natural cavity of a human body, the insertion tube comprises a flexible tube, a snake bone tube, a front end part and a camera which are connected in sequence, or an electronic soft mirror is adopted, in order to facilitate observation of internal conditions, the front end part is usually required to twist under the control of an operation part, a steel wire rope is usually arranged in the insertion tube, passes through the flexible tube and the snake bone tube and then is connected with the snake bone in the front end part, and the operation part controls the steel wire rope to change the bending direction and angle of the snake bone, so that the front end part and the camera are driven to bend to achieve proper angle observation;

for example, patent application number 202023350636.9 discloses a bending control mechanism, and the endoscope further comprises a rotation control mechanism, which is rotatably arranged on the housing and fixedly connected with the insertion portion, and can drive the insertion portion to rotate circumferentially relative to the housing; the rotary control mechanism comprises an indexing thumb wheel, and comprises a rotary operation part and a connecting part fixed on the end surface of the rotary operation part, which is far away from the insertion part, wherein the connecting part extends into the shell from the far end of the shell and is in rotary connection with the shell; the damping piece is used for limiting the indexing shifting wheel, is an annular body, is positioned stably by friction force, does not limit the rotation angle, and can cause the problem of overlarge torsion angle towards a certain direction;

for example, patent application 202011559371.5 discloses an angle-adjustable endoscope comprising an insertion tube structure and an adjusting structure for controlling the insertion tube structure to bend rotationally, wherein the adjusting structure comprises a first adjusting structure for adjusting the upper and lower bending of the snake bone and a second adjusting structure for adjusting the left and right angles of the snake bone; the second adjusting structure is directly provided with a limiting groove in the angle wheel of the insertion tube, and is mutually matched with a limiting pin of the second connecting shaft to limit the rotation angle in the rotation process, so that a user operates the angle wheel of the insertion tube to rotate, and meanwhile, the angle wheel plays a limiting role, acting force directly acts on the angle wheel, abrasion of an internal structure can be accelerated, and the service life of the whole device is prolonged.

Disclosure of Invention

The present utility model is to overcome the above problems and to provide a circumferential adjustment device for an endoscope distal end portion.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the circumferential adjusting device for the front end part of the endoscope comprises a hollow rotating shaft, a synchronous knob and an installation shell, wherein one end of the hollow rotating shaft is rotationally connected with the installation shell, the other end of the hollow rotating shaft is connected with the synchronous knob, the synchronous knob is used for driving the hollow rotating shaft to rotate relative to the installation shell, a hollow channel is arranged in the hollow rotating shaft and used for placing an insertion tube, a cable and a steel wire rope are arranged in the insertion tube,

the front end part of the endoscope is adjusted by twisting the snake bone, and the twisting of the snake bone is realized by traction of two steel wire ropes; the two steel wire ropes penetrate through the channels in the snake bones, the two steel wire ropes are arranged in the snake bones relatively, the flexible pipe is connected with the snake bones, the snake bones are connected with the front end parts, the steel wire ropes penetrate through the flexible pipe and are connected with the snake bones, and the cable is also penetrated in the insertion pipe and is separated from a human body. The snake bone can also be replaced by a PTFE tube commonly used in the industry, namely a polytetrafluoroethylene tube.

The device can be arranged in an endoscope, then a cable and a steel wire rope penetrate through a hollow channel of the hollow rotating shaft and then are connected with the snake bone in the front end part, and the synchronous knob is connected with one end of the hollow rotating shaft, so that the synchronous knob can drive the hollow rotating shaft to rotate, thereby driving the steel wire rope to perform circumferential movement, and further realizing the adjustment of the front end part in the circumferential direction.

Preferably, the cable is arranged at the position of the geometric center line of the hollow rotating shaft, and the steel wire ropes are arranged at two sides of the cable.

When the circumferential angle of the front end part needs to be adjusted, the synchronous knob is rotated, the hollow rotating shaft is driven to rotate relative to the mounting shell, the hollow rotating shaft rotates to drive the steel wire rope arranged in the hollow channel to rotate, so that the snake bone is driven to rotate to change the circumferential angle of the front end part, the cable is positioned in the center position and can be well protected, data transmission is not affected, the steel wire rope is positioned at the eccentric position and can be stressed to twist, but the steel wire rope has certain strength, and the use is not affected.

Preferably, the synchronous knob is sleeved on the hollow rotating shaft through interference fit.

Preferably, a synchronous gasket is arranged between the synchronous knob and the hollow rotating shaft, and the synchronous gasket is sleeved on the hollow rotating shaft.

Preferably, the synchronous knob is provided with a special-shaped hole, and the synchronous knob is sleeved on the hollow rotating shaft through interference fit of the special-shaped hole. The special-shaped holes can be waist-shaped, rectangular, polygonal holes and the like, and the end, connected with the synchronous knob, of the hollow rotating shaft is also made into an adaptive special shape so as to achieve the effect that the synchronous knob can drive the hollow rotating shaft to rotate.

Preferably, the synchronous knob is sleeved on the hollow rotating shaft through clearance fit of the special-shaped holes, a certain clearance is provided, and the effect of driving the hollow rotating shaft can be achieved when the synchronous knob rotates; the gap can not be too large, so that the inner wall is prevented from completely contacting the hollow rotating shaft when the synchronous knob rotates, and idle running is prevented.

Preferably, the outer wall of the synchronous knob is provided with a plurality of strip-shaped bulges, so that friction force is increased, and rotation operation is facilitated.

Preferably, one end of the hollow rotating shaft is rotatably arranged inside the mounting shell, and the hollow rotating shaft and the mounting shell are provided with an axial limiting part and a circumferential limiting part for limiting the movement of the hollow rotating shaft.

Preferably, the axial limiting part comprises a first limiting ring and a second limiting ring, the first limiting ring is arranged on the inner wall of the installation shell, and the second limiting ring is arranged on the outer wall of the hollow rotating shaft and is positioned on one side of the first limiting ring far away from the synchronous knob, so that the hollow rotating shaft is prevented from moving towards the synchronous knob;

preferably, the circumferential limiting part comprises a first limiting plate and a second limiting plate, the first limiting plate is arranged on the inner wall of the mounting shell, and the second limiting plate is arranged on the outer wall of the hollow rotating shaft; the circumferential limiting part can limit the overlarge rotation angle of the hollow rotating shaft, so that the overlarge rotation angle of the hollow rotating shaft is prevented, and the overlarge rotation angle of the steel wire rope is driven, thereby leading the rotation angle of the front end part of the snake bone control to be overlarge and causing the damage of the front end part.

Preferably, the mounting shell comprises an upper shell and a lower shell which are connected with each other, so that the inner part can be conveniently detached and replaced.

Preferably, the end part of the hollow rotating shaft extending out of the synchronous knob is provided with external threads.

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

the utility model provides a circumferential adjusting device for a front end part of an endoscope, which can be installed in an operation part of the endoscope to realize circumferential angle adjustment of the front end part, is controlled by an external synchronous knob, is efficient and quick, and adopts a limiting structure to prevent damage to the device or a patient due to overlarge torsion angle.

Drawings

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

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a schematic view of the present utility model assembled with a cable and a wire rope;

FIG. 4 is a schematic view of an assembled insertion tube in a hollow passage according to the present utility model

Wherein: 1. a hollow rotating shaft; 2. a synchronization knob; 3. a mounting shell; 4. a synchronization pad; 5. an axial limit part; 6. a circumferential limit part; 7. a special-shaped hole; 100. an insertion tube; 200. a cable; 300. a wire rope;

101. a hollow passage; 102. an external thread; 301. an upper housing; 302. a lower housing; 201. strip-shaped bulges; 501. a first stop collar; 502. a second limiting ring; 601. a first limiting plate; 602. and the second limiting plate.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying 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 that "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features being referred to; nor does it represent the importance of the components and therefore should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present utility model.

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

Example 1:

as shown in fig. 1-4, the circumferential adjusting device for the tip of the endoscope comprises a hollow rotating shaft 1, a synchronous knob 2 and a mounting shell 3, wherein one end of the hollow rotating shaft 1 is rotationally connected with the mounting shell 3, the other end of the hollow rotating shaft is connected with the synchronous knob 2, the synchronous knob 2 is used for driving the hollow rotating shaft 1 to rotate relative to the mounting shell 3, a hollow channel 101 is arranged in the hollow rotating shaft 1 and used for placing an insertion tube 100, and a cable 200 and a steel wire rope 300 can be penetrated in the insertion tube 100.

The front end part of the endoscope is adjusted by twisting a snake bone or a PTFE tube, namely a polytetrafluoroethylene tube, and the twisting of the snake bone or the PTFE tube is realized by traction of two steel wire ropes; the two steel wire ropes penetrate through the channels in the snake bone or PTFE pipe, the two steel wire ropes are relatively arranged in the snake bone or PTFE pipe, the front end part of each steel wire rope is connected with the snake bone or PTFE pipe, the flexible pipe is connected with the snake bone or PTFE pipe, the steel wire ropes penetrate through the flexible pipe to be connected with the snake bone or PTFE pipe, and the cable is also penetrated through the insertion pipe 100 to be separated from a human body.

The device can be arranged in an endoscope, then the cable 200 and the steel wire rope 300 penetrate through the hollow channel 101 of the hollow rotating shaft 1 and then are connected with the snake bone or PTFE tube at the front end part, and through the simple structure, the synchronous knob 2 can be realized to drive the hollow rotating shaft 1 to rotate, so that the steel wire rope 300 is driven to perform circumferential movement, the snake bone or PTFE tube is driven to rotate in the circumferential direction, and the adjustment of the front end part in the circumferential direction is realized.

In the specific implementation process, the device is arranged in an endoscope, the mounting shell 3 can be connected with the shell of the endoscope, the insertion tube 100 is sleeved outside the cable 200 and the steel wire rope 300 and is arranged in the hollow channel 101, the cable 200 and the steel wire rope 300 pass through the inside of the insertion tube 100 in the hollow channel 101, the cable 200 and the steel wire rope 300 are prevented from contacting a human body, and the leading end part is prevented from being connected with a snake bone or a PTFE tube in a control way; when the circumferential angle of the front end part needs to be adjusted, the synchronous knob 2 is rotated to drive the hollow rotating shaft 1 to rotate relative to the mounting shell 3, and the hollow rotating shaft 1 rotates to drive the steel wire rope 300 arranged in the hollow channel 101 to rotate, so that the snake bone or the PTFE tube is driven to rotate to further change the circumferential angle of the front end part.

Example 2:

as shown in fig. 1 to 4, on the basis of embodiment 1, the cable 200 is placed at the position of the geometric center line of the hollow shaft 1, that is, at the position of the rotation center line of the hollow passage 101 and the hollow shaft 1, and the wire ropes 300 are placed at both sides of the cable 200.

In the concrete implementation process, the device is arranged in an endoscope, the installation shell 3 can be connected with the shell of the endoscope, then the cable 200 and the steel wire rope 300 pass through the hollow channel 101 of the hollow rotating shaft 1, when the circumferential angle of the front end part needs to be adjusted, the synchronous knob 2 is rotated to drive the hollow rotating shaft 1 to rotate relative to the installation shell 3, and the hollow rotating shaft 1 rotates to drive the steel wire rope 300 arranged in the hollow channel 101 to rotate, so that the snake bone or the PTFE tube is driven to rotate, and the circumferential angle of the front end part is changed.

Example 3:

as shown in fig. 1 to 4, on the basis of embodiment 1, one end of a hollow rotating shaft 1 is rotatably provided inside a mounting case 3, and an axial limit portion 5 and a circumferential limit portion 6 for limiting the movement of the hollow rotating shaft 1 are provided on the hollow rotating shaft 1 and the mounting case 3.

The hollow rotating shaft 1 is arranged in the installation shell 3 to rotate, the hollow rotating shaft 1 and the installation shell 3 are matched with each other to form an axial limiting part 5 and a circumferential limiting part 6 for limiting the movement of the hollow rotating shaft 1, the axial limiting part 5 is used for limiting the movement of the hollow rotating shaft 1 along the length direction of the hollow rotating shaft, the circumferential limiting part 6 can limit the overlarge rotating angle of the hollow rotating shaft 1, the overlarge rotating angle of the hollow rotating shaft 6 is prevented, and the rotating angle of the steel wire rope 300 is driven to be overlarge, so that the rotating angle of the front end part of the snake bone or PTFE tube is controlled to be overlarge, and the front end part of the snake bone or PTFE tube is damaged.

In a further embodiment, the axial limiting portion 5 includes a first limiting ring 501 and a second limiting ring 502, the first limiting ring 501 is installed on the inner wall of the installation shell 3, the second limiting ring 502 is installed on the outer wall of the hollow rotating shaft 1 and is located at one side of the first limiting ring 501 far away from the synchronous knob 2, and the first limiting ring 501 can block the second limiting ring 502 from moving, so as to prevent the hollow rotating shaft 1 from moving towards the synchronous knob 3; the first stop collar 501 and the second stop collar 502 may be replaced with other structures that can block each other, such as an intermittent stop bar.

In a further embodiment, the circumferential limiting portion 6 includes a first limiting plate 601 and a second limiting plate 602, the first limiting plate 601 is mounted on the inner wall of the mounting shell 3, and the second limiting plate 602 is mounted on the outer wall of the hollow rotating shaft 1. The first limiting plate 601 and the second limiting plate 602 are matched with each other, the first limiting plate 601 can block the second limiting plate 602 from moving, when the hollow rotating shaft 1 always rotates towards a certain rotating direction, the rotating angle is overlarge, the twisting angle generated by the steel wire rope 300 is overlarge, certain damage is generated to the steel wire rope 300, the snake bone or PTFE tube and the front end part, and the damage to a patient is also possible; the first limiting plate 601 is adopted to block, so that a user cannot operate the device in error, and accidents are prevented.

Example 4:

as shown in fig. 1-4, on the basis of example 1,

in a further embodiment, the synchronous knob 2 is sleeved on the hollow rotating shaft 1 through interference fit and is used for driving the hollow rotating shaft 1 to rotate, the synchronous knob 2 is sleeved on the hollow rotating shaft 1, and one end, connected with the synchronous knob 2, of the hollow rotating shaft 1 can be set to be rectangular, and when the synchronous knob 2 rotates due to the fact that the rectangular end is elliptical or the like, the hollow rotating shaft 1 is driven by the synchronous knob 2 to rotate.

In a further embodiment, a synchronization gasket 4 is arranged between the synchronization knob 2 and the hollow rotating shaft 1, and the synchronization gasket 4 plays an isolating role;

the synchronous knob 2 is provided with a special-shaped hole 7, and the synchronous knob 2 is sleeved on the hollow rotating shaft 1 through the interference fit of the special-shaped hole 7. The hollow rotating shaft 1 is also made into a special shape matched with one end connected with the synchronous knob 2, so that the effect that the synchronous knob 2 can drive the hollow rotating shaft 1 to rotate is achieved, and waist-shaped, rectangular and polygonal holes can be adopted as special-shaped holes. The synchronous gasket 4 is also provided with a special-shaped through hole so as to be adaptively sleeved on the hollow rotating shaft 1.

In a further embodiment, the outer wall of the synchronous knob 2 is provided with a plurality of strip-shaped protrusions 201, and the strip-shaped protrusions 201 can increase friction force, so that a user can conveniently rotate the synchronous knob

In a further embodiment, the mounting case 3 includes an upper case 301 and a lower case 302 connected to each other, and is configured as an upper case and a lower case, which are convenient for maintenance.

In a further embodiment, the portion of the end portion of the hollow rotating shaft 1 extending out of the synchronous knob 2 is provided with external threads 102, so that the hollow rotating shaft can be conveniently combined with other parts of the endoscope.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The endoscope tip is with circumference adjusting device, its characterized in that: including hollow pivot (1), synchronous knob (2) and installation shell (3), hollow pivot (1) one end rotates with installation shell (3) to be connected, the other end is connected with synchronous knob (2), synchronous knob (2) are used for driving hollow pivot (1) and rotate for installation shell (3), be equipped with hollow passageway (101) in hollow pivot (1) and be used for placing insert tube (100).

2. The circumferential adjustment device for a distal end portion of an endoscope according to claim 1, wherein: the cable (200) and the steel wire rope (300) are arranged in the insertion tube (100), the cable (200) is arranged at the position of the geometric center line of the hollow rotating shaft (1), and the steel wire rope (300) is arranged at two sides of the cable (200).

3. The circumferential adjustment device for a distal end portion of an endoscope according to claim 2, wherein: the synchronous knob (2) is sleeved on the hollow rotating shaft (1) through interference fit.

4. The circumferential adjustment device for a distal end portion of an endoscope according to claim 3, wherein: a synchronous gasket (4) is arranged between the synchronous knob (2) and the hollow rotating shaft (1), and the synchronous gasket (4) is sleeved on the hollow rotating shaft (1).

5. The circumferential adjustment device for a distal end portion of an endoscope according to claim 4, wherein: the synchronous knob (2) is provided with a special-shaped hole (7), and the synchronous knob (2) is sleeved on the hollow rotating shaft (1) through the special-shaped hole (7) in an interference fit manner.

6. The circumferential adjustment device for a distal end portion of an endoscope according to claim 4, wherein: the outer wall of the synchronous knob (2) is provided with a plurality of strip-shaped bulges (201).

7. The circumferential adjustment device for a distal end portion of an endoscope according to any one of claims 1 to 6, wherein: one end of the hollow rotating shaft (1) is rotatably arranged inside the mounting shell (3), and the hollow rotating shaft (1) and the mounting shell (3) are provided with an axial limiting part (5) and a circumferential limiting part (6) for limiting the movement of the hollow rotating shaft (1).

8. The circumferential adjustment device for a distal end portion of an endoscope according to claim 7, wherein: the axial limiting part (5) comprises a first limiting ring (501) and a second limiting ring (502), the first limiting ring (501) is installed on the inner wall of the installation shell (3), and the second limiting ring (502) is installed on the outer wall of the hollow rotating shaft (1) and is located on one side, far away from the synchronous knob (2), of the first limiting ring (501).

9. The circumferential adjustment device for a distal end portion of an endoscope according to claim 7, wherein: the circumferential limiting part (6) comprises a first limiting plate (601) and a second limiting plate (602), the first limiting plate (601) is installed on the inner wall of the installation shell (3), and the second limiting plate (602) is installed on the outer wall of the hollow rotating shaft (1).

10. The circumferential adjustment device for a distal end portion of an endoscope according to claim 1, wherein: the mounting shell (3) comprises an upper shell (301) and a lower shell (302) which are connected with each other, and an external thread (102) is arranged at the end part of the hollow rotating shaft (1) extending out of the synchronous knob (2).