CN110236604B

CN110236604B - Intrauterine biopsy extractor

Info

Publication number: CN110236604B
Application number: CN201910605202.1A
Authority: CN
Inventors: 张汉群; 李勇; 王姿; 鲁亮; 杨飞月
Original assignee: Guizhou Provincial Peoples Hospital
Current assignee: Guizhou Provincial Peoples Hospital
Filing date: 2019-07-05
Publication date: 2024-06-21
Anticipated expiration: 2039-07-05

Abstract

In the present application there is provided an intrauterine biopsy extractor comprising: the tube body is used for extending into the uterine cavity of a patient; the sliding direction of the first lifting piece on the pipe body is vertical to the axis of the pipe body; the first clamping piece is hinged with the first lifting piece; the sliding direction of the second lifting piece on the pipe body is vertical to the axis of the pipe body; the second clamping piece is hinged with the second lifting piece and is used for clamping tumors in cooperation with the first clamping piece; the expansion clamp is arranged in the pipe body, a first inclined surface is arranged on one side of the expansion clamp, which faces the first lifting piece, a second inclined surface is arranged on one side of the expansion clamp, which faces the second lifting piece, and the expansion clamp is used for pushing the first lifting piece to slide through the first inclined surface and pushing the second lifting piece to slide through the second inclined surface when moving towards the uterine cavity; the power assembly is arranged on one side of the tube body away from the expansion clamp and used for driving the expansion clamp to move in the tube body towards the uterine cavity or away from the uterine cavity.

Description

Intrauterine biopsy extractor

Technical Field

The invention relates to the field of gynecological tumor disease treatment, in particular to an intrauterine biopsy extractor.

Background

In order to maximally reduce the invasive degree of examination on patients, in the cervical cavity tumor operation, a biopsy means is generally adopted for a lesion part, namely, a small piece of diseased tissue is clamped, and the small piece of diseased tissue is sent to a pathology department for tabletting so as to judge benign and malignant diseases, and then a subsequent treatment means is determined.

At present, in the operation of cervical cavity tumor, most of clamping forceps extend into the uterine cavity to clamp the tumor for biopsy, when the clamping forceps extend into the uterine cavity, the uterine cavity incision needs to provide space for opening and closing of the clamping forceps, so that the uterine cavity incision is large, the postoperative recovery of a patient is slower, the wound infection probability is high, the pain of the patient is increased, and the working efficiency and the working quality of medical staff are reduced

Disclosure of Invention

Thus, in one embodiment of the present application, there is provided an intrauterine biopsy extractor comprising

The tube body is used for extending into the uterine cavity of a patient;

the first lifting piece is arranged on one side of the tube body, which is used for being inserted into the uterine cavity, and the sliding direction of the first lifting piece on the tube body is perpendicular to the axis of the tube body;

The first clamping piece is hinged with the first lifting piece, and the length direction of the first clamping piece is parallel to the axis direction of the pipe body;

The second lifting piece is slidably arranged on one side of the tube body, which is used for being inserted into the uterine cavity, and is opposite to the first lifting piece, and the sliding direction of the second lifting piece on the tube body is perpendicular to the axis of the tube body;

The second clamping piece is hinged with the second lifting piece, the length direction of the second clamping piece is parallel to the axis direction of the tube body, and the second clamping piece is used for clamping tumors by matching with the first clamping piece;

The expansion piece is arranged in the tube body, a first inclined surface is arranged on one side of the expansion piece, which faces the first lifting piece, a second inclined surface is arranged on one side of the expansion piece, which faces the second lifting piece, and the expansion piece is used for pushing the first lifting piece to slide through the first inclined surface and pushing the second lifting piece to slide through the second inclined surface when moving towards the uterine cavity;

the contraction clamping piece is arranged in the pipe body and is connected with the expansion clamping piece;

The first swing rod is rotatably arranged on the side wall of the pipe body, the length direction of the first swing rod is perpendicular to the axis of the pipe body, the first swing rod can stretch out and draw back along the length direction of the first swing rod, one end of the first swing rod is hinged with the shrinkage clamping piece, and the other end of the first swing rod is hinged with the first clamping piece;

The second swing rod is rotatably arranged on the side wall of the pipe body, the length direction of the second swing rod is perpendicular to the axis of the pipe body, the second swing rod can stretch out and draw back along the length direction of the second swing rod, one end of the second swing rod is hinged with the shrinkage clamping piece, and the other end of the second swing rod is hinged with the second clamping piece; the contraction clamping piece is used for driving the first swing rod and the second swing rod to rotate when moving in the direction away from the uterine cavity, and the first swing rod and the second swing rod are used for driving the first clamping piece and the second clamping piece to swing in the direction approaching to each other when rotating;

The power assembly is arranged on one side of the tube body, which is far away from the expansion clamp, and is used for driving the expansion clamp to move in the tube body towards the uterine cavity or away from the uterine cavity.

Compared with the prior art, after the tube body is inserted into the uterine cavity, medical staff pushes the expansion piece through the power component, the inclined surface of the expansion piece pushes the first lifting piece and the second lifting piece to move towards the direction perpendicular to the axis of the tube body respectively, and the clamping space between the first clamping piece and the second clamping piece is lifted, so that the aim of clamping a large tumor is fulfilled; if the tumor volume is smaller, medical staff can pull the shrinkage clamping piece through the power component, and the shrinkage clamping piece drives the first clamping piece and the second clamping piece to be close to each other through the first swing rod and the second swing rod, so that the clamping space is reduced, and the tumor with smaller volume is clamped. The expansion or contraction of the clamping space between the first clamping piece and the second clamping piece is performed in the uterine cavity, so that the incision for clamping the tumor is slightly larger than the outer diameter of the tube body, the incision of the uterine cavity is small, the postoperative recovery of a patient is quicker, the wound infection probability is reduced, the pain of the patient is reduced, and the working efficiency and the working quality of medical staff are improved.

Further, the first lifter further includes: the first limiting piece is arranged on one side of the first lifting piece, which is positioned in the pipe body, and is used for propping against the inner wall of the pipe body when the first lifting piece slides to the limit position; the second lifter further includes: the second limiting piece is arranged on one side of the second lifting piece, which is positioned in the pipe body, and is used for propping against the inner wall of the pipe body when the second lifting piece slides to the limit position. The first limiting piece and the second limiting piece can prevent the first lifting piece and the second lifting piece from being separated from the pipe body when sliding.

Further, the intrauterine biopsy extractor further comprises: the first reset elastic piece and the second reset elastic piece are characterized in that one end of the first reset elastic piece is propped against the first limiting piece, and the other end of the first reset elastic piece is propped against the inner wall of the pipe body; the second reset elastic piece is abutted against the second limiting piece at one time, and the other end of the second reset elastic piece is abutted against the inner wall of the pipe body. The elastic force direction of the first reset elastic piece and the second reset elastic piece is used for resetting the first lifting piece and the second lifting piece, so that the complicated manual resetting is avoided.

Further, one end of the first lifting piece, which is positioned in the pipe body, is provided with a first matching inclined surface for matching with the first inclined surface; one end of the second lifting piece, which is positioned in the pipe body, is provided with a second matching inclined surface which is used for being matched with the second inclined surface. The contact area between the first inclined plane and the first lifting part can be increased by the cooperation of the first cooperation inclined plane and the first inclined plane, so that the first inclined plane can push the first lifting part conveniently, the first lifting part is prevented from being damaged, and the second cooperation inclined plane is identical.

Further, the first lifter includes: the first connecting rod is hinged with the first clamping piece, and the distance between one end of the tube body inserted into the uterine cavity and the first lifting rod is smaller than or equal to the length of the first connecting rod; the second lifter includes: the second lifting rod is inserted into the tube body, the second connecting rod is connected with the lifting rod, the second connecting rod is hinged with the second clamping piece, and the distance between one end of the tube body inserted into the uterine cavity and the second lifting rod is smaller than or equal to the length of the second connecting rod.

Further, the first connecting rod is provided with a first bulge, and the first bulge is connected with the first clamping piece through a first torsion spring; the second connecting rod is provided with a second bulge, and the second bulge is connected with the second clamping piece through a second torsion spring.

Further, the power assembly includes: the rotating handle is arranged at one end of the pipe body, which is far away from the expansion clamp, and the connecting piece is used for connecting the rotating handle and the expansion clamp; the rotating handle is in threaded fit with the pipe body, the rotating handle is used for moving relative to the pipe body along the axial direction of the pipe body when rotating, and the connecting piece is used for driving the expansion piece to move when the rotating handle moves. The arrangement of the rotating handle enables medical staff not to push the expansion piece towards the uterine cavity direction, the force is conveniently applied, the movement of the tube body in the uterine cavity is avoided, the pushing distance is conveniently judged by pushing the expansion piece in a rotating mode, and the pushing precision is improved.

Further, one end of the rotating handle, which is close to the connecting piece, is hinged with the connecting piece ball.

Further, the first lifter includes: the pipe comprises a first hollow part penetrating through the side wall of the pipe body, and a first lifting part arranged in the first hollow part and connected with the first hollow part in a sliding way, wherein the first lifting part is connected with the expansion piece through a first connecting rod, two ends of the first connecting rod are respectively hinged with the first lifting part and the expansion piece, a first sliding groove for the first connecting rod to move is formed in the side wall of the pipe body, and the first connecting rod is used for swinging when the expansion piece moves to drive the first lifting part to slide relative to the first hollow part; the second lifter includes: the second lifting part is arranged in the second hollow part and is in sliding connection with the second hollow part, the second lifting part is connected with the expansion piece through a second connecting rod, two ends of the second connecting rod are respectively hinged with the second lifting part and the expansion piece, a second sliding groove for the second connecting rod to move is formed in the side wall of the pipe body, and the second connecting rod is used for swinging when the expansion piece moves to drive the second lifting part to slide relative to the second hollow part. The first hollow portion is lifted and has the limit distance, and when the setting of first connecting rod and first elevating gear makes first hollow portion promote the distance and reach the limit value, continue to promote to expand the folder and can promote first elevating gear, enlarge and press from both sides and get the scope, the second promotes the piece and is the same.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is also possible for a person skilled in the art to deduce, without inventive effort, related structures that are not shown in other drawings according to the drawings.

FIG. 1 is a schematic structural view of an intrauterine biopsy extractor;

FIG. 2 is an elevation view of an endometrium biopsy extractor;

FIG. 3 is a cross-sectional view of portions of the first lifting bar, the second lifting bar, the first clamping member, the second clamping member, and the expansion member of the endoluminal biopsy extractor;

FIG. 4 is a cross-sectional view of the power assembly portion of the endometrium biopsy extractor;

FIG. 5 is a partial schematic view at A in FIG. 3;

FIG. 6 is a schematic view of the first and second grippers approaching each other;

fig. 7 is a partial schematic view at B in fig. 6.

Reference numerals illustrate:

a tube body; 11-a first chute; 12-a second chute;

2-a first lifting member; 21-a first lifting lever; 22-a first connecting rod; 221-a first bump; 222-a first torsion spring; 23-a first limiting piece; 24-a first return spring; 212-a first hollow portion; 213-a first lifting part;

3-a first gripping member; 31-first gripping teeth;

4-a second lifter; 41-a second lifting bar; 411-a second mating ramp; 42-a second connecting rod;

5-a second gripping member; 51-second gripping teeth;

6, expanding the clamping piece; 61-tip portion; 62-expanding the clamp body; 621-a first link; 631-a second link; 611-a first incline; 612-a second ramp;

7-shrinking clamping pieces; 71-connecting lines;

8-a power assembly; 81-turning the handle; 82-a connector;

9-a first swing rod; 91-a first hollow swing rod; 92-a first solid swing rod;

10-a second swing rod.

Detailed Description

Embodiment one

The first embodiment of the invention provides a biopsy extractor in uterine cavity, which is used for stretching into uterine cavity to clamp and fix tumor in uterine cavity of patient, so as to facilitate tumor excision.

As shown in fig. 1 and 2, the intrauterine biopsy extractor includes: the pipe body 1, the first lifting part 2, the first clamping part 3, the second lifting part 4, the second clamping part 5, the expanding clamp 6 and the power assembly 8. Wherein the tube body 1 is hollow and is used for extending into the uterine cavity, and the first clamping piece 3 and the second clamping piece 5 are used for jointly matching and clamping tumors of a patient. The power assembly 8 is used for driving the expansion piece 6 to push the first lifting piece 2 and the second lifting piece 4 to expand the clamping space between the first clamping piece 3 and the second clamping piece 5 so as to clamp the tumor with larger volume. The uterine cavity biopsy extractor in combination with fig. 6 further comprises: the power assembly 8 is further used for driving the clamping piece 7 to rotate the first clamping piece 3 and the second clamping piece 5 towards directions close to each other by driving the first swing rod 9 and the second swing rod 10, so that the clamping space between the first clamping piece 3 and the second clamping piece 5 is reduced, and tumors with larger volumes are clamped.

Specifically, when a medical staff needs to clamp a tumor with a larger size, as shown in fig. 3 and 4, the power assembly 8 is used to push the expansion piece 6, wherein the power assembly 8 is arranged on one side of the tube body 1 away from the uterine cavity, after the tube body 1 is inserted into the uterine cavity, the power assembly 8 is positioned outside the uterine cavity, and a user can drive the expansion piece 6 to move in the tube body 1 by controlling the power assembly 8. The power assembly 8 includes: the medical care instrument comprises a rotating handle 81 arranged on one side, far away from the expansion clamp 6, of the tube body 1 and a connecting piece 82 used for connecting the rotating handle 81 and the expansion clamp 6, wherein the rotating handle 81 is partially positioned outside the tube body 1, a medical care person can rotate the handle 81 after the tube body 1 is inserted into a uterine cavity, the rotating handle 81 is in threaded connection with the tube body 1, and when the medical care person rotates the handle 81, the rotating handle 81 is rotated and simultaneously displaced along the axial direction of the tube body 1. The arrangement of the rotating handle 81 ensures that medical staff does not need to push the expanding clamp 6 towards the uterine cavity direction, is convenient for exerting force, avoids the movement of the tube body 1 in the uterine cavity, and is convenient for judging the pushing distance by pushing the expanding clamp 6 in a rotating manner, thereby improving the pushing precision; and when the medical staff stops rotating the rotating handle 81, the rotating handle 81 fixes the position of the expansion piece 6 through the threaded connection with the tube body 1. Meanwhile, as the rotating handle 81 has a certain torque when moving, the connecting piece 82 is in ball hinge joint with the rotating handle 81, so that the connecting piece 82 can be pushed or pulled when the rotating handle 81 rotates, the connecting piece 82 is fixedly connected with the expansion piece 6, and the expansion piece 6 is pushed through the connecting piece 82.

In the present embodiment, the expansion piece 6 is a sliding block provided in the pipe body 1, and the expansion piece 6 has a first inclined surface 611 on a side facing the first lifting piece 2 and a second inclined surface 612 on a first side facing the second lifting piece 4. The first inclined surface 611 is used for pushing the first lifting member 2, and the second inclined surface 612 is used for pushing the second lifting member 4. The first lifting member 2 and the second lifting member 4 are both slidably arranged on one side of the tube body 1 extending into the uterine cavity of the patient, and the first lifting member 2 and the second lifting member 4 are oppositely arranged, and the first lifting member 2 comprises: a first lifting rod 21 inserted into the pipe body 1, and a first connecting rod 22 connected with the first lifting rod 21, wherein the length direction of the first lifting rod 21 is perpendicular to the axis of the pipe body 1, the length direction of the first connecting rod 22 is parallel to the axis of the pipe body 1, and the first connecting rod 22 is connected with the first clamping piece 3; the second lifter 4 includes: a second lifting rod 41 inserted into the pipe body 1, and a second connecting rod 42 connected with the second lifting rod 41, the length direction of the second lifting rod 41 is perpendicular to the axis of the pipe body 1, the length direction of the second connecting rod 42 is parallel to the axis of the pipe body 1, and the second connecting rod 42 is connected with the second clamping piece 5; notably, the side of the first lifting rod 21 near the expansion piece 6 has a first mating inclined surface that is in engagement with the first inclined surface 611; the second lift lever 41 has a second fitting slope 411 that is engaged with the second slope 612 on a side close to the expansion piece 6. The contact area between the first inclined plane 611 and the first lifting rod 21 can be increased by matching the first matching inclined plane with the first inclined plane 611, so that the first inclined plane 611 can push the first lifting rod 21 conveniently, the first lifting rod 21 is prevented from being damaged, and the second matching inclined plane 411 is similar.

When the medical staff rotates the rotating handle 81 to push the expansion piece 6 to move towards the direction in the uterine cavity, the expansion piece 6 pushes the first lifting rod 21 to move away from the tube body 1 through the first inclined plane 611, and pushes the second lifting rod 41 to move away from the tube body 1 through the second inclined plane 612, so that the distance between the first lifting piece 2 and the second lifting piece 4 is enlarged, and the distance between the first clamping piece 3 and the second clamping piece 5 is enlarged, so that the clamping space is lifted.

The first gripping member 3 is provided with a plurality of first gripping teeth 31 on a side facing the second gripping member 5; the second clamping member 5 is provided with a plurality of second clamping teeth 51 at one side facing the first clamping, and the arrangement of the first clamping teeth 31 and the second clamping teeth 51 can better and more stably clamp tumors.

Notably, as shown in fig. 5, the first lifting member 2 further includes: the first limiting piece 23 is arranged on one side of the first lifting rod 21, which is positioned in the pipe body 1, and the first limiting piece 23 is used for abutting against the inner wall of the pipe body 1 when the first lifting rod 21 moves to a limit position in a direction away from the pipe body 1, so that the first lifting rod 21 is prevented from being separated from the pipe body 1, and the first lifting piece 2 falls into the uterine cavity; the second lifter 4 further includes: the second limiting piece is located on one side, located in the pipe body 1, of the second lifting rod 41, and the second limiting piece is used for propping against the inner wall of the pipe body 1 when the second lifting rod 41 moves to a limit position in the direction away from the pipe body 1, so that the second lifting rod 41 is prevented from being separated from the pipe body 1, and the second lifting piece 4 falls into the uterine cavity.

Meanwhile, the intrauterine biopsy extractor further comprises: the first return elastic member 24 and the second return elastic member are springs in this embodiment, and of course, the first return elastic member 24 and the second return elastic member may be other members, and in this embodiment, only springs are used as an example, and no specific limitation is made. One end of the first reset elastic piece 24 is propped against the first limiting piece 23, and the other end is propped against the side wall of the pipe body 1; one end of the second reset elastic piece is propped against the second limiting piece, and the other end is propped against the side wall of the pipe body 1. When the power assembly 8 pushes the expansion piece 6 in the direction toward the intrauterine cavity, the first inclined surface 611 and the second inclined surface 612 of the expansion piece 6 push the first lifting rod 21 and the second lifting rod 41 to move in opposite directions, respectively; when the power assembly 8 pulls the expansion piece 6 away from the uterine cavity, the expansion piece 6 retracts, the first lifting rod 21 is no longer propped against the first inclined surface 611, and the first reset elastic piece 24 is used for providing elastic force towards the inside of the pipe body 1, so that the first lifting rod 21 moves towards the pipe body 1; the second lifting rod 41 is no longer abutted against the second inclined surface 612, and the second reset elastic member is used for providing elastic force towards the inside of the pipe body 1, so that the second lifting rod 41 moves towards the direction of the pipe body 1; from the above, when the power assembly 8 pulls the expansion piece 6, the first reset elastic piece 24 and the second reset elastic piece are used for driving the first lifting rod 21 and the second lifting rod 41 to move towards opposite directions, so as to reduce the clamping space and increase the clamping force of the first clamping piece 3 and the second clamping piece 5 on the tumor, thereby more stably clamping the tumor.

When a medical staff needs to clamp a tumor with smaller volume, as shown in fig. 6, the shrinkage clamp 7 can be pulled by the power assembly 8, and the shrinkage clamp 7 is connected with the expansion clamp 6 by the connecting wire 71, so that the shrinkage clamp 7 can be pulled at the same time when the expansion clamp 6 is pulled by the power assembly 8, but the shrinkage clamp 7 cannot be pushed at the same time when the expansion clamp 6 is pushed by the power assembly 8, of course, the expansion clamp 6 and the shrinkage clamp 7 can be connected by other parts, such as a chain and the like, and the embodiment only takes the connecting wire 71 as an example, and is not limited in detail.

As shown in fig. 6 and 7, the shrinkage clamp 7 is arranged at one end of the tube body 1 extending into the uterine cavity, one end of the first swing rod 9 is hinged with the shrinkage clamp 7, the other end of the first swing rod 9 is hinged with the first clamping piece 3, the middle part of the first swing rod 9 is hinged with the side wall of the tube body 1, when the shrinkage clamp 7 is positioned at the initial position, the axis of the first swing rod 9 is vertical to the axis of the tube body 1, when a medical staff rotates the rotating handle 81 and pulls the shrinkage clamp 7 towards a position far away from the space, the shrinkage clamp 7 drives the first swing rod 9 to rotate around the hinge point of the first swing rod 9 on the tube body 1, and when the first swing rod 9 rotates, the first clamping piece 3 is driven to rotate towards a direction close to the second clamping piece 5; one end of the second swing rod 10 is hinged with the shrinkage clamping piece 7, the other end of the second swing rod 10 is hinged with the second clamping piece 5, the middle part of the second swing rod 10 is hinged with the side wall of the tube body 1, when the shrinkage clamping piece 7 is positioned at the initial position, the second swing rod 10 is perpendicular to the axis of the tube body 1, when a medical staff rotates the rotating handle 81 and pulls the shrinkage clamping piece 7 towards the position far away from the space, the shrinkage clamping piece 7 drives the second swing rod 10 to rotate around the hinge point of the second swing rod 10 in the tube body 1, and when the second swing rod 10 rotates, the second clamping piece 5 is driven to rotate towards the direction close to the first clamping piece 3.

It should be noted that, since the first gripping member 3 and the second gripping member 5 can move in opposite directions, the first swing link 9 and the second swing link 10 are both telescopically arranged, and the first swing link 9 includes: the first hollow swing rod 91, wear to establish the solid pendulum rod 92 of first in the hollow pendulum rod 91, first solid pendulum rod 92 can follow the length direction of first hollow pendulum rod 91 and slide, and first hollow pendulum rod 91 is articulated with body 1 lateral wall, and the one end that is close to the clamp that contracts of first hollow pendulum rod 91 is articulated with the clamp that contracts, and one side that is close to the first clamp 3 of first solid pendulum rod 92 is articulated with first clamp 3. That is, when the first gripping member 3 moves in a direction away from the pipe body 1, the first solid swing link 92 may be driven to slide in the first hollow swing link 91. The second swing link 10 includes: the second hollow swing rod and the second solid swing rod penetrating through the second hollow swing rod can slide along the length direction of the second hollow swing rod, the second hollow swing rod is hinged with the side wall of the pipe body 1, one end, close to the shrinkage clamp, of the second hollow swing rod is hinged with the shrinkage clamp, and one side, close to the second clamping piece 5, of the second solid swing rod is hinged with the second clamping piece 5. That is, when the second clamping member 5 moves in a direction away from the pipe body 1, the second solid swing rod can be driven to slide in the second hollow swing rod.

From the above, when the medical staff pulls the contraction clip 7, the contraction clip 7 drives the first swing rod 9 and the second swing rod 10 to rotate at the same time, the first swing rod 9 and the second swing rod 10 drive the first clamping piece 3 and the second clamping piece 5 to swing towards the direction of approaching each other, and the clamping range is narrowed when the first clamping piece 3 and the second clamping piece 5 approach each other. The medical personnel stop rotating the rotating handle 81, and the rotating handle 81 is locked through the threaded connection with the tube body 1, so that the position fixing of the first clamping piece 3 and the second clamping piece 5 is ensured, and clamping force can be provided.

It is noted that the first connecting rod 22 has a first protrusion 221, and the first protrusion 221 is connected to the first gripping member 3 through a first torsion spring 222; the second connecting rod 42 is provided with a second bulge, and the second bulge is connected with the second clamping piece 5 through a second torsion spring. The first torsion spring 222 and the second torsion spring are respectively used for applying elastic force to the first clamping member 3 and the second clamping member 5, so that when the first clamping member 3 is not driven to rotate by the first swing rod 9, the first clamping member 3 can be kept parallel to the first connecting rod 22, and the second clamping member 5 is identical.

In addition, it should be noted that, since the tumor may grow on the side wall of the uterine cavity, in order to facilitate the clamping of the tumor located on the side wall, as shown in fig. 2, the first clamping member 3 and the second clamping member 5 have a certain bending in the directions away from each other, so that the first clamping member 3 or the second clamping member 5 can better contact the inner wall of the uterine cavity, and further, the tumor located on the side wall of the uterine cavity is easier to clamp.

From the above, the medical staff can grasp tumors of different sizes by the intrauterine biopsy extractor in the present embodiment, and first make an incision in the uterine cavity of the patient into which the tube body 1 is inserted. When the tumor volume is large, medical staff can push the expansion clamp 6 by rotating the handle 81, so that the distance between the first clamping piece 3 and the second clamping piece 5 is increased, the clamping range is enlarged, and the tumor is clamped; when the tumor volume is smaller, medical staff can pull the shrinkage clamping piece 7 through rotating the handle 81, so that the distance between the first clamping piece 3 and the second clamping piece 5 is reduced, the clamping range is reduced, and the tumor is clamped. The increase or the decrease of the distance between the first clamping piece 3 and the second clamping piece 5 is carried out in the uterine cavity, so that the incision is not required to be oversized and only slightly larger than the outer diameter of the tube body 1, the incision in the uterine cavity is small, the postoperative recovery of a patient is quicker, the wound infection probability is low, the pain of the patient is reduced, and the working efficiency and the working quality of medical staff are improved.

Second embodiment

A second embodiment of the invention relates to an intrauterine biopsy extractor, which is substantially identical to the first embodiment, except that the intrauterine biopsy extractor in this embodiment may hold a larger tumor volume.

In the present embodiment, as shown in fig. 3 and 5, the first lift lever 21 includes: a first hollow portion 212 penetrating the side wall of the pipe body 1, and a first lifting portion 213 provided in the first hollow portion 212 and slidably connected to the first hollow portion 212, wherein the sliding direction of the first lifting portion 213 is perpendicular to the axial direction of the pipe body 1. The expansion piece includes: the expanding clamp comprises a tip part 61 and an expanding clamp body 62, wherein the expanding clamp body 62 is connected with a connecting piece 82, a first connecting rod 621 is arranged on the expanding clamp body 62, one end of the first connecting rod 621 is hinged with the expanding clamp body, the other end of the first connecting rod 621 is hinged with a first lifting part 213, a first sliding groove 11 is formed in the side wall of the pipe body 1, the first sliding groove 11 is a through groove and is used for enabling the first connecting rod 621 to slide, and when the expanding clamp 6 is pushed, a first inclined plane 611 of the expanding clamp 6 pushes the first hollow part 212 to move, so that the distance between the first clamping part 3 and the second clamping part 5 is increased. Meanwhile, one end, connected with the expansion piece 6, of the first connecting rod 621 slides in the first sliding groove 11, and the first connecting rod 621 rotates simultaneously when advancing to drive the first lifting part 213 to slide in the first hollow part 212, so that the distance between the first clamping piece 3 and the second clamping piece 5 is further increased. When the spreader clip 6 moves to the point where the spreader clip body 62 abuts against the first hollow portion 212, the first inclined surface 611 cannot push the first hollow portion 212, and the sliding distance of the first hollow portion 212 reaches the limit. The user can continue to push the expansion piece 6 through rotating the handle 81, and the expansion piece body 62 can drive the first connecting rod 621 to slide in the first chute 11 with the one end that expands the piece 6 and be connected to make the first body of rod rotate, and the rotation of first connecting rod 621 drives the first lifting part 213 to slide in the first hollow part 212, and the slip direction is for keeping away from the body of pipe 1, so that the first lifting part 213 can continue to promote the first clamping piece 3, in order to increase the size of the clamping range between the first clamping piece 3 and the second clamping piece 5.

The second lift lever 41 includes: the second lifting part penetrates through the second hollow part of the side wall of the pipe body 1 and is arranged in the second hollow part and is in sliding connection with the second hollow part, and the sliding direction of the second lifting part is vertical to the axial direction of the pipe body 1. The expansion piece includes: the expansion device comprises a pointed head part 61 and an expansion piece body 62, wherein a second connecting rod 631 is arranged on the expansion piece body 62, one end of the second connecting rod 631 is hinged to the expansion piece body, the other end of the second connecting rod 631 is hinged to a second lifting part, a second sliding groove 12 is formed in the side wall of the pipe body 1, the second sliding groove 12 is a through groove for the second connecting rod 631 to slide, when the expansion piece 6 is pushed, a second inclined surface 612 of the expansion piece 6 pushes the second hollow part to move, and the distance between the first clamping piece 3 and the second clamping piece 5 is increased. Meanwhile, one end, connected with the expansion piece 6, of the second connecting rod 631 slides in the second sliding groove 12, and the second connecting rod 631 rotates simultaneously when advancing to drive the second lifting part to slide in the second hollow part, so that the distance between the first clamping piece 3 and the second clamping piece 5 is further increased. When the expanding clip 6 moves to the position where the expanding clip body 62 abuts against the second hollow part, the second inclined surface 612 cannot continuously push the second hollow part, and the sliding distance of the second hollow part reaches the limit. The user can continue to push the expansion piece 6 through rotating the handle 81, and the expansion piece body 62 can drive one end, connected with the expansion piece 6, of the second connecting rod 631 to slide in the second sliding groove 12, so that the second rod body rotates, the second lifting part is driven to slide in the second hollow part by the rotation of the second connecting rod 631, the sliding direction is far away from the pipe body 1, the second lifting part can continuously lift the second clamping piece 5, and the size of a clamping range between the first clamping piece 3 and the second clamping piece is enlarged.

As can be seen from the above, when the first inclined surface 611 and the second inclined surface 612 of the expansion piece 6 are pushed to push the first lifting rod 21 and the second lifting rod 41 to the limit distance respectively, the medical staff can still rotate the rotating handle 81 to drive the first connecting rod 621 and the second connecting rod 631 to rotate through the expansion piece 6, so as to further lift the distance between the first clamping piece 3 and the second clamping piece, and clamp the tumor with larger size.

Those skilled in the art will appreciate that in the foregoing embodiments, numerous technical details have been set forth in order to provide a thorough understanding of the present application. The technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above embodiments. Accordingly, in actual practice, various changes may be made in the form and details of the above-described embodiments without departing from the spirit and scope of the application.

Claims

1. An intrauterine biopsy extractor, comprising:

the tube body is used for extending into the uterine cavity of a patient;

the power assembly is arranged on one side of the tube body, which is far away from the expansion clamp, and is used for driving the expansion clamp to move in the tube body towards the uterine cavity or away from the uterine cavity;

One end of the first lifting piece, which is positioned in the pipe body, is provided with a first matching inclined surface for matching with the first inclined surface; one end of the second lifting piece, which is positioned in the pipe body, is provided with a second matching inclined surface for matching with the second inclined surface;

The first lifter includes: the first lifting rod is inserted into the tube body, and the first connecting rod is connected with the first lifting rod and hinged with the first clamping piece, and the distance between one end of the tube body inserted into the uterine cavity and the first lifting rod is smaller than or equal to the length of the first connecting rod;

The second lifter includes: the second lifting rod is inserted into the tube body, the second connecting rod is connected with the second lifting rod, the second connecting rod is hinged with the second clamping piece, and the distance between one end of the tube body inserted into the uterine cavity and the second lifting rod is smaller than or equal to the length of the second connecting rod.

2. The intrauterine biopsy extractor of claim 1, wherein the first lifter further comprises: the first limiting piece is arranged on one side of the first lifting piece, which is positioned in the pipe body, and is used for propping against the inner wall of the pipe body when the first lifting piece slides to the limit position;

The second lifter further includes: the second limiting piece is arranged on one side of the second lifting piece, which is positioned in the pipe body, and is used for propping against the inner wall of the pipe body when the second lifting piece slides to the limit position.

3. The intrauterine biopsy extractor of claim 2, further comprising: the first reset elastic piece and the second reset elastic piece are characterized in that one end of the first reset elastic piece is propped against the first limiting piece, and the other end of the first reset elastic piece is propped against the inner wall of the pipe body; the second reset elastic piece is abutted against the second limiting piece at one time, and the other end of the second reset elastic piece is abutted against the inner wall of the pipe body.

4. The intrauterine biopsy extractor according to claim 1, wherein the expansion member and the contraction member are connected by a connecting wire.

5. The intrauterine biopsy extractor according to claim 1, wherein the first connecting rod has a first protrusion thereon, the first protrusion and the first gripping member being connected by a first torsion spring;

The second connecting rod is provided with a second bulge, and the second bulge is connected with the second clamping piece through a second torsion spring.

6. The intrauterine biopsy extractor according to claim 1, wherein the power assembly comprises: the rotating handle is arranged at one end of the pipe body, which is far away from the expansion clamp, and the connecting piece is used for connecting the rotating handle and the expansion clamp; the rotating handle is in threaded fit with the pipe body, the rotating handle is used for moving relative to the pipe body along the axial direction of the pipe body when rotating, and the connecting piece is used for driving the expansion piece to move when the rotating handle moves.

7. The intrauterine biopsy extractor of claim 6, wherein an end of the turning handle proximate the connector is ball-hinged to the connector.

8. The intrauterine biopsy extractor of claim 6, wherein the first lifting bar comprises: the pipe comprises a first hollow part penetrating through the side wall of the pipe body, and a first lifting part arranged in the first hollow part and connected with the first hollow part in a sliding way, wherein the first lifting part is connected with the expansion piece through a first connecting rod, two ends of the first connecting rod are respectively hinged with the first lifting part and the expansion piece, a first sliding groove for the first connecting rod to move is formed in the side wall of the pipe body, and the first connecting rod is used for swinging when the expansion piece moves to drive the first lifting part to slide relative to the first hollow part;

The second lift lever includes: the second lifting part is arranged in the second hollow part and is in sliding connection with the second hollow part, the second lifting part is connected with the expansion piece through a second connecting rod, two ends of the second connecting rod are respectively hinged with the second lifting part and the expansion piece, a second sliding groove for the second connecting rod to move is formed in the side wall of the pipe body, and the second connecting rod is used for swinging when the expansion piece moves to drive the second lifting part to slide relative to the second hollow part.