Tissue extractor capable of cutting tissue for minimally invasive surgery

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a minimally invasive surgery tissue extractor capable of cutting tissue, which comprises an outer tube with a fixed handle at the rear end and an inner tube with a push-pull handle at the rear end, an opening support ring is fixed at the front end of the inner tube, a traction window is arranged on the push-pull handle, and a storage bag is arranged at the bottom of the opening support ring. A cutting net is arranged in the storage bag, and a traction line is arranged between the cutting net and the cutting pull ring and connected with the cutting net and the cutting pull ring; at the beginning, the storage bag and the cutting net are located at the front end of the interior of the outer tube in a folded state, the opening supporting ring is located at the front end of the interior of the outer tube in a contracted state, the tissue extractor capable of cutting the tissue for the minimally invasive surgery is provided with the cutting net, tissue blocks can be cut up in the using process, and the maximum diameter of the tissue blocks is reduced so that the tissue blocks can be directly taken out conveniently; and the situation that the operation time is prolonged due to the fact that the size of an operation incision is enlarged or an operation doctor needs to cut up tissues can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a minimally invasive surgery tissue extractor capable of cutting tissues. BACKGROUND

[0002] Minimally invasive surgery is a surgical method different from traditional surgery, and it has the characteristics of small trauma, light pain and fast recovery. In minimally invasive surgery (such as laparoscopic surgery), a tissue extractor is usually used to take out the resected tissues. A common tissue extractor is composed of a receiving bag with a bag opening opened by a memory metal, an outer sleeve, an inner sleeve containing the memory metal and capable of moving up and down in the outer sleeve, and an attached handle. The surgeon usually uses the tissue extractor to take out the resected tissues through the laparoscope device incision.

[0003] Chinese patent application CN117017373A discloses a minimally invasive surgery tissue extraction instrument, which comprises an outer sleeve with an outer tube handle at the rear end and an inner sleeve with an inner tube handle at the rear end. A detachable moving block is installed at the front end of the inner sleeve, and a non-detachable rear end block is installed at the rear end. A steel wire is arranged between the moving block and the rear end block. A shearing window is also arranged on the rear end side wall of the inner sleeve. An elastic block with a through hole in the middle is arranged in the inner cavity of the front part of the outer sleeve. The elastic mouth opening front fork is fixedly connected to the moving block at the rear end, and the mouth opening front fork passes through the through hole. A receiving bag is installed on the mouth opening front fork.

[0004] The minimally invasive surgery tissue extraction instrument has the following defects: the designed receiving bag will be separated from the inner sleeve and left in the patient's abdominal cavity after the resected tissues are loaded, and the surgeon needs to enlarge the laparoscope device incision to take it out, which leads to the enlargement of the patient's surgical incision. In addition, there are various types of tissue extractors on the market, but most of them do not consider the method of taking out tissues with a diameter larger than the laparoscope device incision. In general, the surgeon needs to enlarge the incision size or use other surgical instruments to cut the tissues before taking them out, which will increase the patient's surgical incision or increase the surgeon's operation amount and lead to prolonged surgery time. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a minimally invasive surgery tissue extractor capable of cutting tissues to solve the problem of the existing tissue extractor that needs to enlarge the surgical incision or needs the surgeon to cut the tissues, leading to prolonged surgery time when taking out tissues with a diameter larger than the surgical incision.

[0006] In order to achieve the above object, the utility model adopts the technical scheme of a minimally invasive surgery tissue extractor capable of cutting tissues, an outer tube with a fixed handle at the rear end, an inner tube with a push-pull handle at the rear end, a support ring fixed at the front end of the inner tube, a pull window arranged on the push-pull handle, a storage bag arranged at the bottom of the support ring, a cutting net arranged inside the storage bag, and a pull line arranged between the cutting net and the cutting ring and connected thereto.

[0007] Preferably, the outer tube and the inner tube are hollow cylindrical pipes, the inner tube is closed at an opening close to the support ring, and a pull-in opening is arranged on the closed opening, the outer diameter of the inner tube being equal to the inner diameter of the outer tube.

[0008] Preferably, the push-pull handle is provided with a pull-out opening at the front end, and the pull-out opening is a circular opening with a diameter greater than that of the pull line.

[0009] Preferably, the storage bag is made of high-strength high-molecular material, is connected to the support ring through a plurality of sleeve rings, and the bottom of the sleeve ring is closed.

[0010] Preferably, the support ring is made of memory metal, such as nickel-titanium alloy.

[0011] Preferably, the pull line is connected to the cutting net, enters the inner tube through the pull-in opening, passes out of the pull-out opening, and is fixed to the cutting ring, and the pull line is made of high-strength high-molecular material.

[0012] Preferably, a cutting window is arranged at the rear end of the inner tube close to the push-pull handle, and the cutting window is a place of annular narrowing, and the minimum diameter is greater than that of the pull line.

[0013] Preferably, the cutting net is connected to the storage bag in a manner that the bottom of the cutting net is connected and fixed to the bottom of the storage bag, and other parts of the cutting net are attached to the storage bag through adhesive material.

[0014] Preferably, the cutting net is made of high-strength fine metal wire, such as steel wire.

[0015] The utility model provides a kind of minimally invasive surgery tissue extractor capable of cutting tissues, with the following beneficial effects:

[0016] Firstly, the utility model fixes the cutting net consisting of high-strength metal wire in the storage bag, the cutting net and the cutting handle are connected by pull line, after loading tissue into the storage bag, the surgeon pulls the cutting handle, and the pull line will tighten the cutting net, the cutting net will generate enough pressure on the tissue to cut it into multiple small pieces, thereby reducing the volume of the single tissue, facilitating the use of the minimally invasive surgery tissue extractor capable of cutting tissues to directly take out the tissue from the surgical incision of minimally invasive surgery, avoiding to expand the surgical incision and reducing the operation burden of the surgeon.

[0017] Secondly, the shearing window is arranged at the rear end of the inner tube, when the surgeon finishes loading the tissue and taking out the present application, the surgical instrument can be used to shear from the shearing window, the inner tube and the pull wire therein are cut off, so that the front section inner tube can be separated from the outer tube from back to front through the outer tube, the structure connected with the storage bag is simplified, and the surgeon is convenient to take out the tissue from the storage bag. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front structure schematic diagram of the working state of the present application;

[0019] Figure 2 It is a front structure schematic diagram of the initial state of the present application;

[0020] Figure 3 It is a side structure schematic diagram of the front end of the inner tube of the present application;

[0021] Figure 4 It is a front structure schematic diagram of the working state of the present application;

[0022] Figure 5 It is a front structure schematic diagram of the cutting net function (in use state) of the present application;

[0023] Figure 6 It is a front structure schematic diagram of the cutting net function (after use state) of the present application.

[0024] In the drawing, 1, outer tube; 2, inner tube; 201, pull-in entrance; 3, fixed handle; 4, push-pull handle; 5, support ring; 6, storage bag; 7, cutting net; 8, pull wire; 9, pull-out exit; 10, cutting handle; 11, shearing window; 12, tissue block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0026] In the description of the present application, it should be explained that the terms "front", "rear", "inner", "opening", "middle", "bottom" and the like indicate the orientation or position relationship, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated components or elements must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present application.

[0027] Please refer to Figure 1 , Figure 3 and Figure 4The utility model discloses a kind of tissue extractors for minimally invasive surgery that can cut tissue, including the outer tube 1 with fixed handle 3 of rear end, the inner tube 2 with push-pull handle 4 of rear end, the inner tube 2 front end is fixed with the mouth ring 5 of supporting, pull window 10 is provided on push-pull handle 4, storage bag 6 is set to the bottom of mouth ring 5, cutting net 7 is provided in storage bag 6, pull line 8 is provided between cutting net 7 and cutting pull ring 10 and is respectively connected with it.

[0028] Please refer to Figure 2 , initial state, the storage bag 6 and cutting net 7 of the utility model are in folded state, mouth ring 5 is in shrinkage state in the inside front end of outer tube 1, reduce the space required for storing the utility model.

[0029] The outer tube 1 and inner tube 2 are hollow cylindrical pipes, the inner tube 2 is closed at the opening close to the mouth ring 5, the pull-in entrance 201 is provided on the closed opening, and the outer diameter of the inner tube 2 is equal to the inner diameter of the outer tube 1. The fixed handle 3 has two finger holes, the push-pull handle 4 has a finger hole, and the fixed handle 3 and the push-pull handle 4 are fixed on the rear end of the outer tube 1 and the inner tube 2 by adhesion or other methods. In the use process, the outer tube can be conveniently fixed and moved forward and backward by using the finger holes; the pull-out exit 9 is provided at the front end of the push-pull handle 4, the pull-out exit 9 is a circular opening, and the diameter is greater than that of the pull line 8. By providing the pull-in entrance 201 and the pull-out exit 9, the pull line 8 passes through the inner tube 2, plays a role in protecting the pull line 8, and also makes the appearance of the utility model neat.

[0030] The storage bag 6 is made of high-strength polymer material and is connected to the mouth ring 5 through a plurality of sleeve rings. The sleeve rings are closed at the bottom, and the distance between the sleeve rings can be reduced when the inner tube is moved backward, thereby playing a role in closing the storage bag. It should be noted that this connection method is prior art, so it will not be described in detail; the mouth ring 5 is made of memory metal, such as nickel-titanium alloy. The memory metal has the characteristic of restoring the initial shape, so when the mouth ring 5 is located at the inside front end of the outer tube 1 in the initial state, the memory metal mouth ring 5 will tightly adhere to the inner wall of the outer tube 1, generating a certain friction force to prevent the inner tube 2 from moving forward and backward by itself. When the user uses it, if the generated force is greater than the friction force, the inner tube can be smoothly moved forward or backward.

[0031] The pull line 8 is connected to the cutting net 7, enters the inside of the inner tube 2 through the pull-in entrance 201, and is fixed on the cutting pull ring 10. The cutting pull ring 10 has a finger hole, and the pull line 8 is made of high-strength polymer material, which can prevent the pull line 8 from breaking during use of the utility model.

[0032] The shearing window 11 is arranged at the rear end of the inner tube 2 close to the push-pull handle 4, and the shearing window 11 is an annular narrowing, wherein the minimum diameter is greater than the diameter of the pull wire 8, so as to ensure the normal passing of the pull wire 8 and provide a convenient and clear shearing area for the user.

[0033] The connection mode of the cutting net 7 and the storage bag 6 is that the bottom of the cutting net 7 is connected and fixed with the bottom of the storage bag 6, and other parts of the cutting net 7 are attached to the storage bag 6 through adhesive material, so that the cutting net 7 can be separated from the storage bag 6 under the tension of the pull wire 8 in the working state, thereby making the cutting net 7 better adhere to the tissue block 12; the cutting net 7 is a high-strength thin metal wire, such as a steel wire, so that the cutting net 7 has sufficient strength to cut the tissue block.

[0034] Please refer to Figure 5 , Figure 6 , during the backward pulling of the cutting ring 10, the cutting net 7 is gradually tightened and adheres to the tissue block 12 under the driving of the pull wire 8, and then the cutting ring 10 is pulled backward, the cutting net 7 composed of high-strength metal wires can generate sufficient pressure to cut the tissue block 12 into multiple pieces, thereby reducing the size of the tissue block 12.

[0035] Usage:

[0036] For easy understanding, the side close to the patient is defined as the front, and the side away from the patient is defined as the rear, in use, the tissue cutter for minimally invasive surgery is taken out from the sterile package, the front end is inserted into the patient's abdominal cavity through the laparoscope channel, the surgeon stabilizes the instrument by one hand through the fixed handle 3, and pushes the push-pull handle 4 forward with the other hand, thereby driving the inner tube 2 to move forward, after pushing a sufficient distance, the memory metal material supporting ring 5 automatically opens, the opening of the storage bag 6 is opened, and the cutting net 7 fixed on the storage bag 6 is also unfolded, the surgeon loads the tissue block 12 into the storage bag 6 by operating other surgical instruments, slowly pulls the cutting ring 10 backward, the cutting net 7 is separated from the storage bag 6 except the bottom, adheres to the tissue block 12, continues to pull the cutting ring 10 backward until the cutting net generates sufficient pressure to cut the tissue block 12, thereby reducing the maximum diameter of the tissue block 12, pulls the push-pull handle 4 backward, the supporting ring 5 is gradually retracted into the inner end of the outer tube 1, the connecting sleeve ring on the bag opening of the storage bag 6 is blocked by the outer tube 1 and cannot be stacked forward, thereby closing the bag opening of the storage bag 6, at this time, the instrument is taken out from the patient's abdominal cavity, the inner tube 2 and the pull wire 8 are cut by the shearing window 11, the front end of the inner tube 2 is moved forward to separate from the front end of the outer tube 1, and the surgeon can take out the tissue block 12 from the storage bag by using surgical instruments such as forceps.

[0037] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tissue retriever for minimally invasive surgery capable of cutting tissue, characterized by: The outer tube (1) is provided with a fixed handle (3) at the rear end, and the inner tube (2) is provided with a push-pull handle (4) at the rear end. The inner tube (2) is fixed with a support ring (5) at the front end. The push-pull handle (4) is provided with a pulling outlet (9). The storage bag (6) is arranged at the bottom of the support ring (5). The storage bag (6) is provided with a cutting net (7) inside. The cutting net (7) and the cutting pull ring (10) are connected by a pulling line (8). At the beginning, the storage bag (6) and the cutting net (7) are in a folded state, and the support ring (5) is in a contracted state inside the outer tube (1).

2. The tissue-removable minimally invasive surgical tissue retriever of claim 1, wherein: The outer tube (1) and the inner tube (2) are hollow cylindrical pipes. The inner tube (2) is closed near the opening of the support ring (5). The closed opening is provided with a pulling inlet (201). The outer diameter of the inner tube (2) is equal to the inner diameter of the outer tube (1).

3. The tissue-removable minimally invasive surgical tissue retriever of claim 2, wherein the push-pull is a push-pull wire. The handle (4) is provided with a pulling outlet (9) at the front end. The pulling outlet (9) is a circular opening with a diameter larger than that of the pulling line (8).

4. The tissue-removable minimally invasive surgical tissue retriever of claim 3, wherein: The storage bag (6) is made of high-strength high-molecular material and is connected to the support ring (5) through multiple loops. The bottom of the loop is closed.

5. The tissue-removable minimally invasive surgical tissue retriever of claim 4, wherein: The support ring (5) is made of memory metal, such as nickel-titanium alloy.

6. The tissue-removable minimally invasive surgical tissue retriever of claim 5, wherein: The pulling line (8) is connected to the cutting net (7) and enters the inner tube (2) through the pulling inlet (201). It is fixed on the cutting pull ring (10) and is made of high-strength high-molecular material.

7. The tissue-removable minimally invasive surgical tissue retriever of claim 6, wherein: A cutting window (11) is arranged at the rear end of the inner tube (2) near the push-pull handle (4). The cutting window (11) is a ring-shaped narrowing. The smallest diameter is larger than that of the pulling line (8).

8. The tissue-removable minimally invasive surgical tissue retriever of claim 7, wherein: The connection between the cutting net (7) and the storage bag (6) is that the bottom of the cutting net (7) is connected and fixed to the bottom of the storage bag (6), and the part of the cutting net (7) except the bottom is attached to the inner side of the storage bag (6) by adhesive material.

9. The tissue-removable minimally invasive surgical tissue retriever of claim 8, wherein: The cutting net (7) is made of high-strength fine metal wire.

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