CN209770493U

CN209770493U - Surgical cutter

Info

Publication number: CN209770493U
Application number: CN201920143830.8U
Authority: CN
Inventors: 王磊; 余惠玲; 陈继东
Original assignee: Yisi Suzhou Medical Technology Co Ltd
Current assignee: Yisi Suzhou Medical Technology Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-12-13
Anticipated expiration: 2029-01-28

Abstract

The utility model discloses a surgical cutter, relating to the technical field of surgical instruments. The surgical cutter comprises a cutting assembly, a handle trigger assembly and a rotating assembly, wherein the cutting assembly comprises an outer pipe and an inner pipe sleeved in the outer pipe, and a cutting knife is arranged at the front end of the cutting assembly; the handle trigger assembly is connected with the cutting assembly and is configured to drive the inner tube to axially reciprocate relative to the outer tube; the rotating assembly is connected with the cutting assembly and is configured to drive the inner tube and the outer tube to rotate synchronously. In the surgical cutter, the angle of the cutting knife can be adjusted by arranging the rotating component so as to ensure the accuracy of the cutting position; the inner tube can be driven to reciprocate axially by one-hand operation through the handle trigger assembly, so that cutting action is finished, and the operation is simple and convenient.

Description

Surgical cutter

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a surgical cutter.

Background

In China, 23 provinces have local infected hydatid cases, wherein the local infected hydatid cases are seriously prevalent in regions such as Xinjiang, Qinghai, Tibet, Gansu, Ningxia, inner Mongolia, Sichuan western region and the like, and the liver echinococcosis is the main disease. The best method for treating liver echinococcosis is to achieve recovery by surgical suction and excision. Three methods are commonly used in the prior art, one is human body puncture, i.e. the cyst of hydatid is aspirated by puncture surgery: directly opening the abdominal cavity of the human body, performing surgical treatment, and removing the hydatid cyst; thirdly, the hydatid rotary cutter is used for rotary cutting and sucking to remove the liver cyst.

The three methods have the following disadvantages in practical operation: the first method has small wound to human body, but the treatment is not clean, cross infection is caused, and the recurrence is easy to cause; the second method can treat the hydatid cyst cleanly, but has large trauma to the human body and long recovery time; the third method needs a special liver hydatid operation rotary cutting instrument, and the instrument needs to use two hands to carry out rotary cutting action, so that the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

the utility model aims to provide an easy operation, convenient operation cutterbar.

To achieve the purpose, the utility model adopts the following technical proposal:

a surgical cutter comprises a cutting assembly, the cutting assembly comprises an outer tube and an inner tube sleeved in the outer tube, a cutting knife is arranged at the front end of the cutting assembly, and the surgical cutter further comprises:

A handle trigger assembly coupled to the cutting assembly, the handle trigger assembly configured to drive the inner tube to reciprocate axially relative to the outer tube; and

a rotating assembly coupled to the cutting assembly, the rotating assembly configured to drive the inner and outer tubes in synchronous rotation.

Wherein the handle trigger assembly comprises:

The tail end of the outer pipe is connected with the handle, and the tail end of the inner pipe extends out of the tail end of the outer pipe and into the handle; and

the trigger has a reset function and is respectively connected with the handle and the inner tube in a rotating way.

wherein the handle trigger assembly further comprises:

and one end of the reset elastic piece is connected with the handle, and the other end of the reset elastic piece is connected with the firing trigger.

Wherein the firing trigger comprises:

the upper end of the main body extends into the handle and is rotatably connected with the handle, and the lower end of the main body extends out of the handle;

The sliding block is positioned in the handle and can slide along the axial direction of the inner tube, and the sliding block is connected with the reset elastic piece; and

And one end of the connecting rod is rotatably connected with the sliding block, and the other end of the connecting rod is rotatably connected with the main body.

The inner wall of the handle is provided with a sliding groove extending along the axial direction of the inner tube, and the sliding block is arranged in the sliding groove in a sliding mode.

wherein the rotating assembly comprises:

the impeller is sleeved outside the outer pipe and synchronously rotates with the outer pipe; and

the connecting pin is connected with the outer pipe and the inner pipe, and the inner pipe can slide along the axial direction of the inner pipe relative to the connecting pin.

the inner tube is provided with a strip hole extending along the axial direction, and the connecting pin extends into the strip hole and can slide along the strip hole.

wherein the surgical cutter further comprises:

A flushing assembly in communication with the inner tube.

wherein, be provided with the sealing washer between inner tube and the outer tube.

Wherein the surgical cutter further comprises:

and the vacuum adsorption assembly is communicated with the tail end of the inner pipe.

Has the advantages that: the utility model provides a surgical cutter. In the surgical cutter, the angle of the cutting knife can be adjusted by arranging the rotating component so as to ensure the accuracy of the cutting position; the inner tube can be driven to reciprocate axially by one-hand operation through the handle trigger assembly, so that cutting action is finished, and the operation is simple and convenient.

drawings

FIG. 1 is a partial cross-sectional view of a surgical cutter provided by the present invention with the firing trigger released;

FIG. 2 is a schematic view of the front end of the cutting assembly of FIG. 1;

FIG. 3 is a partial cross-sectional view of a surgical cutter provided by the present invention as the firing trigger is depressed;

FIG. 4 is a schematic view of the front end of the cutting assembly of FIG. 3;

FIG. 5 is a schematic view of a portion of the surgical cutter provided by the present invention;

FIG. 6 is a cross-sectional view of a surgical cutter provided by the present invention;

fig. 7 is a partial cross-sectional view of a cutting assembly provided by the present invention.

Wherein:

1. a cutting assembly; 11. an outer tube; 12. an inner tube; 121. a strip hole; 13. a cutting knife; 14. a seal ring;

2. A handle trigger assembly; 21. a handle; 211. a right housing; 212. a left housing; 22. a main body; 23. a slider; 24. a compression spring; 25. a connecting rod;

3. A rotating assembly; 31. an impeller; 32. a connecting pin;

4. a negative pressure vacuum suction port; 5. and (6) flushing the opening.

Detailed Description

in order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

the embodiment provides a surgical cutter which can be used for cutting cysts or collecting tissue samples during surgery. In this embodiment, the cutting of the hydatid cyst by the surgical cutter is taken as an example for description.

As shown in FIG. 1, the surgical cutter includes a cutting assembly 1, a rotation assembly 3, a handle trigger assembly 2, an irrigation assembly, and a vacuum suction assembly.

The cutting assembly 1 is a tubular structure for cutting tissue. For convenience of introduction, one end of the cutting assembly 1 for cutting the tissue is called a front end, and one end far away from the tissue is called a tail end, so that the front end of the cutting assembly 1 is provided with a cutting knife 13, and the cutting knife 13 is used for cutting; the trailing end of the cutting assembly 1 is connected to a handle trigger assembly 2 for controlling the cutting action by holding the handle trigger assembly 2. Specifically, the cutting assembly 1 includes an outer tube 11, an inner tube 12 disposed through the outer tube 11, and a cutting blade 13 disposed on the inner tube 12. As shown in fig. 1 and 2, the front end side of the outer tube 11 and the front end side of the inner tube 12 are both formed with a cut by means of an opening, and the cutting knife 13 is disposed on the cut of the inner tube 12 and corresponds to the side wall near the front end, so that the tissue cut by the cutting knife 13 enters the inner tube 12 through the cut of the inner tube 12.

The rotating assembly 3 is connected with the cutting assembly 1 and can drive the inner tube 12 and the outer tube 11 to rotate synchronously, so that the angle of the cutting knife 13 on the cutting assembly 1 is adjusted to cut at a position needing an operation. The inner tube 12 and the outer tube 11 rotate synchronously, so that the notches on the inner tube 12 and the notches on the outer tube 11 can be prevented from being staggered, the cutting knife 13 is prevented from being shielded, and the cutting effect is ensured.

The handle trigger assembly 2 is used as an operating end and is connected with the cutting assembly 1, and the handle trigger assembly 2 can drive the inner pipe 12 to slide towards the outer pipe 11 along the axial direction, so that the cutting knife 13 can be contacted with a position needing cutting and can do cutting action. In this embodiment, the handle trigger assembly 2 can be held by one hand, the reciprocating motion of the inner tube 12 can be realized by knocking the trigger, the operation force is small and convenient, and the operation difficulty of the surgical cutter can be reduced.

the inner tube 12 intercommunication among flush assembly and the cutting assembly 1 for provide the washing liquid in to inner tube 12, so that wash blood and the tissue that produces when cutting position and cutting, conveniently observe the circumstances of cutting through chamber mirror etc. is favorable to guaranteeing the operation effect, and flush assembly can also wash cutting assembly 1, is favorable to reducing cross infection's risk.

In order to discharge the cut tissue and the flushing liquid smoothly, the surgical cutter is also provided with a vacuum absorption assembly which is communicated with the inner tube 12 of the cutting assembly 1. In practical use, the inner pipe 12 reciprocates axially, and the flushing assembly and the vacuum adsorption assembly work simultaneously to flush and drain water while cutting.

As shown in fig. 1 and 3, the rear end of the outer tube 11 of the cutting assembly 1 is fixed to the front upper end of the handle 21, and the rear end of the inner tube 12 passes through the outer tube 11 and extends into the handle 21. The vacuum adsorption assembly comprises a negative pressure vacuum suction port 4 and a vacuumizing device. One end of the negative pressure vacuum suction port 4 extends into the handle 21 and is rotatably connected with the tail end of the inner tube 12, and the other end of the negative pressure vacuum suction port 4 is positioned outside the handle 21 and is communicated with a vacuum pumping device so as to generate negative pressure in the cutting assembly 1.

The handle trigger assembly 2 includes a handle 21 and a firing trigger. One end of the trigger extends into the handle 21 and is rotatably connected with the inner wall of the handle 21, the other end of the trigger extends out of the handle 21, and the trigger has a reset function. By pressing or releasing the firing trigger, the firing trigger can be rotated or reset relative to the handle 21, thereby driving the inner tube 12 to reciprocate in an axial direction to effect cutting.

In this embodiment, the reset of the trigger can be realized by the reset elastic piece, one end of the reset elastic piece is connected with the handle 21, and the other end of the reset elastic piece is connected with the trigger. When the trigger is pressed, the trigger overcomes the elastic force of the elastic reset piece, rotates towards the direction close to the handle 21, and drives the inner tube 12 to move backwards. When the trigger is released, the trigger will rotate in a direction away from the handle 21 under the elastic force of the elastic reset piece, so as to restore to the initial position, and in the process, the trigger will drive the inner tube 12 to move towards the front end. By pressing and releasing the firing trigger, the inner tube 12 can be reciprocated axially to complete the cutting action.

Specifically, the firing trigger includes a body 22, a sled 23, and a linkage 25. The lower end of the main body 22 extends out of the handle 21, and the upper end of the main body 22 near the front side is rotatably connected with the inner wall of the handle 21. The sliding block 23 is arranged in the handle 21 and can slide along the axial direction of the inner tube 12 relative to the handle 21, and the rear end of the sliding block 23 is connected with the elastic reset piece. One end of the link 25 is rotatably connected to the slider 23, and the other end is rotatably connected to the upper end of the main body 22 near the rear side. Wherein the elastic restoring member may be a compression spring 24.

When the firing trigger is released, the handle trigger assembly 2 is shown in FIG. 1, and the compression spring 24 drives the push block 23 to a position near the forward end, where the cutting blade 13 on the inner tube 12 is at the forward most position, as shown in FIG. 2. When the firing trigger is pressed, the handle trigger assembly 2 is shown in fig. 3, the lower end of the main body 22 moves towards the handle 21, the main body 22 drives the slider 23 to slide towards the rear side by overcoming the resistance of the compression spring 24 through the connecting rod 25, so as to drive the inner tube 12 to move towards the rear side, and at the moment, as shown in fig. 4, the cutting knife 13 on the inner tube 12 is located at the rearmost side. The slider 23 moves by the cutting depth of the cutting blade 13.

in order to limit the sliding direction of the sliding block 23, a sliding groove extending along the axial direction of the inner tube 12 may be disposed on the inner wall of the handle 21, and the sliding block 23 is slidably disposed in the sliding groove. The sliding direction of the slider 23 is restricted by the sliding grooves, so that the moving distance of the inner tube 12 can be ensured.

As shown in FIG. 5, to facilitate the mounting of the handle trigger assembly 2 to the cutting assembly 1, the handle 21 may include a left housing 212 and a right housing 211 symmetrically disposed, and the left housing 212 and the right housing 211 are fastened to form the handle 21.

in this embodiment, the rotating assembly 3 may be disposed at the connecting position of the cutting assembly 1 and the handle 21. Specifically, the rotation assembly 3 includes a pulsator 31 and a connection pin 32. The impeller 31 is sleeved on the outer tube 11 and fixed with the outer tube 11. The connecting pin 32 connects the outer tube 11 and the inner tube 12. When the angle of the cutting knife 13 needs to be adjusted, the outer tube 11 can be driven to rotate by rotating the impeller 31, and the inner tube 12 can be driven to synchronously rotate because the outer tube 11 is connected with the inner tube 12 through the connecting pin 32. In this embodiment, the pulsator 31 can rotate 360 °.

since the inner tube 12 needs to be axially moved relative to the outer tube 11, the inner tube 12 can slide axially on itself relative to the connecting pin 32 in order to avoid the connecting pin 32 being provided to affect the axial reciprocating movement of the inner tube 12.

as shown in fig. 6, the inner tube 12 is provided with a long hole 121 extending in the axial direction thereof, the connection pin 32 is disposed through the outer tube 11, and the end of the connection pin 32 protrudes into the long hole 121. The width of the elongated hole 121 may be matched to the diameter of the connection pin 32 so that the connection pin 32 cannot move in the width direction of the elongated hole 121 but can slide in the length direction of the elongated hole 121.

when the inner tube 12 is axially reciprocated, the connecting pin 32 slides along the elongated hole 121 so that the inner tube 12 can move relative to the outer tube 11. When the pulsator 31 is rotated, the outer tube 11 is rotated, which drives the connection pins 32 to move in the circumferential direction. Due to the limitation of the elongated hole 121 on the connecting pin 32, the connecting pin 32 will drive the inner tube 12 to rotate, thereby realizing the synchronous rotation of the inner tube 12 and the outer tube 11.

In order to make the stress of the inner tube 12 uniform, a plurality of connecting pins 32 may be provided, and a plurality of connecting pins 32 may be provided at even intervals along the circumferential direction of the inner tube 12, so that the stress of the inner tube 12 is more uniform.

In this embodiment, the flushing assembly may include a liquid storage device and a liquid supply pipeline, and two ends of the liquid supply pipeline are respectively communicated with the liquid storage device and the inner tube 12. As shown in fig. 6, a washing port 5 is provided in the pulsator 31, one end of the washing port 5 is communicated with the inner tube 12, and the other end may be communicated with the liquid supply pipe.

as shown in FIG. 7, in order to prevent the leakage of the washing liquid, which enters the handle 21 and affects the normal operation of the surgical cutter, a sealing ring 14 may be disposed between the inner tube 12 and the outer tube 11, and the sealing rings 14 are disposed at both ends of the rotating assembly 3 outside the inner tube 12, so as to prevent the washing liquid from entering between the inner tube 12 and the outer tube 11 through the rotating assembly 3.

In this embodiment, the handle 21 may be made of a polymer material, and has a light weight, so that the medical staff can conveniently hold the handle, and the one-handed operation can be realized.

the operation of the surgical cutter provided by the embodiment is as follows:

The cutting assembly 1 enters the position to be cut through the piercing probe, the impeller 31 is rotated, the angle of the cutting knife 13 is adjusted, and the cutting knife 13 is aligned with the position to be cut. The handle trigger assembly 2 is held by hand, and the inner tube 12 is driven to reciprocate axially to perform cutting by repeatedly pressing and releasing the trigger. And when cutting, starting the flushing component and the vacuum adsorption component to flush the cut part and discharge the flushed liquid, blood and cut tissues.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A surgical cutter comprises a cutting assembly (1), wherein the cutting assembly (1) comprises an outer tube (11) and an inner tube (12) sleeved in the outer tube (11), a cutting knife (13) is arranged at the front end of the cutting assembly (1), and the surgical cutter is characterized by further comprising:

a handle trigger assembly (2), the handle trigger assembly (2) being connected to the cutting assembly (1), the handle trigger assembly (2) being configured to drive the inner tube (12) to reciprocate axially relative to the outer tube (11); and

A rotating assembly (3), the rotating assembly (3) being connected with the cutting assembly (1), the rotating assembly (3) being configured to drive the inner tube (12) and the outer tube (11) in synchronous rotation.

2. The surgical cutter of claim 1, wherein the handle trigger assembly (2) comprises:

The tail end of the outer pipe (11) is connected with the handle (21), and the tail end of the inner pipe (12) extends out of the tail end of the outer pipe (11) and into the handle (21); and

The trigger has a reset function and is respectively connected with the handle (21) and the inner tube (12) in a rotating way.

3. The surgical cutter according to claim 2, wherein the handle trigger assembly (2) further comprises:

and one end of the reset elastic piece is connected with the handle (21), and the other end of the reset elastic piece is connected with the firing trigger.

4. The surgical cutter of claim 3, wherein the firing trigger comprises:

The upper end of the main body (22) extends into the handle (21) and is rotatably connected with the handle (21), and the lower end of the main body (22) extends out of the handle (21);

The sliding block (23) is positioned in the handle (21) and can slide along the axial direction of the inner pipe (12), and the sliding block (23) is connected with the return elastic piece; and

One end of the connecting rod (25) is rotatably connected with the sliding block (23), and the other end of the connecting rod (25) is rotatably connected with the main body (22).

5. The surgical cutter according to claim 4, characterized in that the inner wall of the handle (21) is provided with a slide groove extending in the axial direction of the inner tube (12), and the slider (23) is slidably arranged in the slide groove.

6. The surgical cutter according to any of claims 1 to 5, wherein the rotation assembly (3) comprises:

the impeller (31) is sleeved outside the outer pipe (11) and rotates synchronously with the outer pipe (11); and

A connecting pin (32), wherein the connecting pin (32) connects the outer pipe (11) and the inner pipe (12), and the inner pipe (12) can slide along the axial direction of the connecting pin (32).

7. The surgical cutter according to claim 6, characterized in that the inner tube (12) is provided with an axially extending elongated hole (121), and the connecting pin (32) extends into the elongated hole (121) and is slidable along the elongated hole (121).

8. The surgical cutter of any of claims 1-5, wherein the surgical cutter further comprises:

A flushing assembly in communication with the inner tube (12).

9. The surgical cutter according to claim 8, characterized in that a sealing ring (14) is arranged between the inner tube (12) and the outer tube (11).

10. The surgical cutter of any of claims 1-5, wherein the surgical cutter further comprises:

And the vacuum adsorption assembly is communicated with the tail end of the inner pipe (12).