Snare with tissue collection sleeve and operation method of snare

Abstract

The invention relates to the technical field of medical equipment, in particular to a snare with a tissue collecting sleeve, the snare comprises a snare body and the collecting sleeve located at the end of the snare body, the snare body comprises a handheld handle, a stretching handle and a coil, the collecting sleeve is located below the coil on the snare body, and the collecting sleeve is connected with the handheld handle. The collecting sleeve comprises an outer sleeve body and an inner sleeve body, the outer sleeve body and the inner sleeve body are both of a bagged structure with an opening in the top face, and the opening face of the inner sleeve body can be opened and closed, the collecting sleeve is arranged to be the outer sleeve body and the inner sleeve body, and the opening face of the inner sleeve body can be closed, so that after the human tissue falls into the inner sleeve body, the inner sleeve body can not only collect the human tissue, but also can collect the human tissue; according to the snare with the tissue collecting sleeve, human tissue can be prevented from slipping or overflowing, the use stability is guaranteed, meanwhile, the open face of the inner sleeve body can be kept in a closed state and repeatedly opened for a long time in a clamping and embedding mode, the use stability is guaranteed, and the invention further provides an operation method suitable for the snare with the tissue collecting sleeve.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a snare with a tissue collection sleeve and an operating method thereof. Background Art

[0002] The snare is a device that uses a nylon rod to tighten a slip knot that has been tied with absorbable or synthetic thread in advance to ligate blood vessels, polyps or other pipeline structures. It is easy to operate and has been used in many laparoscopic abdominal surgeries. Since the snare uses absorbable thread, it has little reaction to human tissue after being placed in the body. At the same time, the operation of the absorbable thread is reversible and can be directly cut off when the ligation position is not satisfactory. Therefore, the snare has the advantages of convenience and economy. After the absorbable thread on the snare is tightened, its cutting force on the tissue is smaller than that of the titanium clip, and it is not easy to cut the tissue. It is usually necessary to use surgical scissors to cut it separately. Although it is safer to use, in actual operation, due to limited field of view, the removed tissue is easy to fall off, resulting in difficulty in collection and affecting surgical operation. Therefore, the existing snares will also be equipped with a net bag for collecting the removed tissue. For example, Chinese patent document CN202222420184.X discloses a snare with a collecting net bag, including a snare structure, the snare structure includes a snare wire, the upper end of the snare wire is provided with a collecting net bag, one end of the collecting net bag is provided with an elastic ring, the snare body includes a main rod, the upper end of the main rod is provided with a slider, one end of the main rod is provided with a reinforcing tube, one end of the reinforcing tube is provided with a sleeve, the snare structure is located in the sleeve At one end of the tube, an electrode plug is arranged on the upper end of the slider, the slider is slidably connected to the main rod, and a handle is arranged on the other end of the main rod. The above patent solves the technical problems that the removed tissue is easy to fall off and lost when the existing snare is in use, and it is easy to be unable to be collected after being flushed. However, after the removed tissue falls into the net bag, it is necessary to pull out of the net bag as soon as possible. For operations with multiple tissues to be removed or the same tissue needs to be removed in multiple times, the snare needs to be replaced frequently, which increases the cost, complicates the operation, and has a great impact on the health of the patient.

[0003] Therefore, it is necessary for those skilled in the art to provide a snare with a tissue collection sleeve and an operation method thereof, so that the snare can collect multiple removed tissues, improve the use efficiency, and reduce the production cost. Summary of the invention

[0004] The present invention aims to provide a snare with a tissue collection sleeve and an operating method thereof, so as to solve the technical problems in the prior art that for surgeries with multiple tissues to be removed or the same tissue to be removed in multiple times, the snare needs to be frequently replaced, resulting in increased costs, complicated operations, and a significant impact on the health of patients.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a snare with a tissue collection sleeve, comprising a snare body and a collection sleeve located at the end of the snare body, the snare body comprising a hand-held handle, a stretching handle slidably arranged in the hand-held handle and a coil telescopically arranged on the stretching handle, the collection sleeve is located on the opening side of the coil on the snare body, the collection sleeve comprises an outer sleeve body and an inner sleeve body, both of which are bag-shaped structures with an open top surface, and the opening surface of the inner sleeve body can be opened and closed.

[0006] Furthermore, the outer sleeve is fixedly connected to the end face of the stretching handle, the inner sleeve is installed inside the outer sleeve, the opening face of the inner sleeve is located below the coil, the edge of the opening face of the inner sleeve is fixedly connected to the outer sleeve, a side of the inner sleeve close to the stretching handle is separated from the outer sleeve, and a side of the inner sleeve away from the stretching handle is integrated with the outer sleeve.

[0007] Furthermore, a suture is provided in the middle of the inner sleeve body, and the suture partially sews the inner sleeve body and the outer sleeve body into one, and the suture part extends to a surface of the inner sleeve body away from the stretching handle.

[0008] Furthermore, a first stretching channel and a second stretching channel are axially provided in the stretching handle, and both ends of the first stretching channel and the second stretching channel respectively pass through the wall of the stretching handle, the first stretching channel is located above the second stretching channel, the coil is movably arranged in the first stretching channel, and a push-pull rod is slidably provided in the second stretching channel, the outer wall of the outer sleeve is opposite to the opening of the second stretching channel, the push-pull rod can pass through the walls of the outer sleeve and the inner sleeve, and the push-pull rod is rotatably arranged in the outer sleeve.

[0009] Furthermore, a first locking portion and a second locking portion are formed at one end of the push-pull rod, the first locking portion penetrates through the walls of the outer sleeve and the inner sleeve and extends outward, and the second locking portion is cooperatively connected between the outer sleeve and the inner sleeve.

[0010] Furthermore, a first through hole is provided on a side of the outer sleeve close to the end of the stretching handle, and a first embedding hole is provided on a side of the outer sleeve away from the end of the stretching handle, and the first through hole, the first embedding hole and the second stretching channel are coaxially arranged; a second through hole is provided on a side of the inner sleeve close to the end of the stretching handle, and a second embedding hole is provided on a side of the inner sleeve away from the end of the stretching handle, and the second through hole, the second embedding hole and the second stretching channel are coaxially arranged.

[0011] Furthermore, the second locking portion on the push-pull rod is located between the first through hole and the second through hole, the second locking portion abuts against the outer wall of the inner sleeve, the first locking portion on the push-pull rod can extend to the outside of the first locking hole, and the first locking portion on the push-pull rod can abut against the outer wall of the outer sleeve located at the first locking hole.

[0012] Furthermore, the first locking portion on the push-pull rod is C-shaped, and the contours of the first locking hole and the second locking hole are consistent with the outer contour of the first locking portion.

[0013] Furthermore, the push-pull rod is made of plastic, and one end of the push-pull rod away from the collecting sleeve penetrates the wall of the stretching handle and extends outwards, and the collecting sleeve is telescopically arranged in the second stretching channel.

[0014] An operating method for a snare with a tissue collection sleeve applicable to any of the above items is as follows: S1: an operator manually holds the hand-held handle, sets the annular structure of the coil on the tissue part to be removed from the human body, pulls the stretching handle to shrink the annular structure of the coil, and tightens it, and uses surgical scissors to cut the human tissue to be removed, thereby completing the removal of the human tissue part; S2: the human tissue falls into the inner sleeve, and the push-pull rod is pushed forward, and the opening surface of the inner sleeve is closed, thereby completing the collection of the human tissue; S3: the push-pull rod is rotated 180 degrees, and the push-pull rod is connected to the outside of the outer sleeve by snapping, so as to prevent the collected human tissue from overflowing; S4: the push-pull rod is rotated 180 degrees again and pulled backward, so that the push-pull rod is detached from the outer sleeve, and the opening surface of the inner sleeve is opened to receive new human tissue again; S5: the above steps S1 to S4 are repeated to complete the reception; S6: the operator pulls the push-pull rod backward, and the collection sleeve is pulled out of the second stretching channel of the hand-held handle as a whole, thereby completing the removal of the human tissue.

[0015] The beneficial effects of the present invention are as follows: the present invention sets a collection sleeve under the coil of the snare to collect the human tissue after excision, effectively avoiding the loss of human tissue, and improving the efficiency and safety of the operation. The present invention sets the collection sleeve into an outer sleeve and an inner sleeve, and the opening surface of the inner sleeve can be closed, so that when the human tissue falls into the inner sleeve, the inner sleeve can not only collect it, but also prevent the human tissue from slipping or overflowing, ensuring the stability of use. At the same time, the opening surface of the inner sleeve can maintain a closed state for a long time and open repeatedly through the card embedding setting, thereby avoiding the operator's long-term manual maintenance, reducing the difficulty of operation, and reducing the production cost, and improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic diagram of a snare with a tissue collection sleeve and an operation method thereof according to the present invention.

[0017] Figure 2 It is a partial exploded view of the snare with a tissue collection sleeve and the operation method thereof of the present invention.

[0018] Figure 3 It is a top view of the snare with tissue collection sleeve and the operation method thereof of the present invention.

[0019] Figure 4 yes Figure 3 Section view along AA.

[0020] Figure 5 yes Figure 3 Cross-sectional view along BB.

[0021] Figure 6 yes Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0022] Figure 7 yes Figure 2 A partial enlarged schematic diagram of area B in the middle.

[0023] Figure 8 yes Figure 5 A partial enlarged schematic diagram of area C in the middle.

[0024] Fig. 9 yes Figure 6 Schematic diagram of the closed state of the middle inner sleeve.

[0025] The components in the accompanying drawings are marked as follows: 10, snare body; 11, hand-held handle; 12, stretching handle; 13, coil; 14, first stretching channel; 15, second stretching channel; 20, collecting sleeve; 21, outer sleeve; 211, first through hole; 212, first locking hole; 22, inner sleeve; 221, second through hole; 222, second locking hole; 223, suture; 23,; 24, push-pull rod; 241, first locking portion; 242, second locking portion. DETAILED DESCRIPTION

[0026] The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0027] See also Figure 1 , Figure 3 , Figure 4 The present invention provides a snare with a tissue collecting sleeve, comprising a snare body 10 and a collecting sleeve 20 located at the end of the snare body 10 .

[0028] The snare body 10 includes a hand-held handle 11 and a stretching handle 12. The stretching handle 12 is slidably arranged in the hand-held handle 11. A coil 13 is movably arranged in the stretching handle 12. One end of the coil 13 is annular and extends out of the end of the stretching handle 12. The annular structure of the coil 13 located outside the stretching handle 12 is shrinkable. When in use, the operator manually holds the hand-held handle 11, puts the annular structure of the coil 13 on the tissue part to be removed from the human body, pulls the stretching handle 12 to shrink the annular structure of the coil 13, and tightens it. The human tissue to be removed is cut with surgical shears to achieve removal of the human tissue part.

[0029] It can be understood that the specific installation and operation of the handheld handle 11, the stretching handle 12 and the coil 13 on the snare body 10 can refer to the snare disclosed in Chinese patent CN215273158U, and the specific structure is not described in detail here.

[0030] Furthermore, the collecting sleeve 20 is located on the opening side of the coil 13 on the snare body 10, and the collecting sleeve 20 includes an outer sleeve 21 and an inner sleeve 22. The outer sleeve 21 and the inner sleeve 22 are both bag-shaped structures with an open top surface. The outer sleeve 21 is fixedly connected to the end surface of the stretching handle 12, and the inner sleeve 22 is installed inside the outer sleeve 21. The opening surface of the inner sleeve 22 is located below the annular structure of the coil 13.

[0031] When in use, the annular structure of the coil 13 contracts and binds the human tissue to be removed. After removal, the human tissue falls into the inner sleeve 22 and is collected, thereby effectively avoiding the loss of human tissue and improving the efficiency and safety of the operation.

[0032] In this embodiment, the outer sleeve 21 and the inner sleeve 22 have a certain elasticity and flexibility, and can wrap the removed tissue to collect the tissue. In actual use, the collection sleeve 20 is collapsed in the human body. After the human tissue enters the collection sleeve 20, due to a large amount of tissue mucus, the human tissue is easy to slide in. Therefore, after the human tissue enters the collection sleeve 20, the present invention closes the opening surface of the inner sleeve 22 so that the human tissue cannot easily slide out, thereby ensuring the stability of use, and is suitable for multiple loading, improving the use efficiency.

[0033] See also Figure 5 , Figure 6 , Figure 7 , Fig. 9 The edge of the opening surface of the inner sleeve body 22 is fixedly connected to the outer sleeve body 21. It is used to fold the edge of the opening surface of the inner sleeve body 22 to the other side to achieve the closure of the opening surface of the inner sleeve body 22.

[0034] Furthermore, a side of the inner sleeve body 22 close to the stretching handle 12 is separated from the outer sleeve body 21, and a side of the inner sleeve body 22 away from the stretching handle 12 is integrated with the outer sleeve body 21. Specifically, a suture 223 is provided in the middle of the inner sleeve body 22, and the suture 223 partially sews the inner sleeve body 22 and the outer sleeve body 21 into one. The suture 223 partially extends to the side of the inner sleeve body 22 away from the stretching handle 12, thereby making the side of the inner sleeve body 22 away from the stretching handle 12 and the outer sleeve body 21 sewed into one.

[0035] When in use, the human tissue falls into the inner sleeve 22. At this time, the opening surface of the inner sleeve 22 is closed to prevent the human tissue from slipping out of the inner sleeve 22. When other human tissues need to be removed, the opening surface of the inner sleeve 22 is opened to achieve repeated reception.

[0036] In other embodiments, a memory nickel-titanium wire is provided at the edge of the opening surface of the inner sleeve 22, and the memory nickel-titanium wire is used to open and close the opening surface of the inner sleeve 22, so that the inner sleeve 22 can be quickly expanded to a preset state in the human body cavity, and can also quickly achieve a collected and folded state.

[0037] For further information, see Figure 2 , Figure 5 , Figure 8 The stretching handle 12 is provided with a first stretching channel 14 and a second stretching channel 15 along the axial direction, and both ends of the first stretching channel 14 and the second stretching channel 15 respectively penetrate the wall of the stretching handle 12, and the first stretching channel 14 is located above the second stretching channel 15. The coil 13 is movably arranged in the first stretching channel 14, and a push-pull rod 24 is slidably arranged in the second stretching channel 15. The outer wall of the outer casing 21 is directly opposite to the opening of the second stretching channel 15, and the push-pull rod 24 can penetrate the wall of the outer casing 21 and the inner casing 22. The push-pull rod 24 is rotatably arranged in the outer casing 21.

[0038] A first locking portion 241 and a second locking portion 242 are formed at one end of the push-pull rod 24 . The first locking portion 241 penetrates through the walls of the outer sleeve 21 and the inner sleeve 22 and extends outwards. The second locking portion 242 is connected between the outer sleeve 21 and the inner sleeve 22 .

[0039] A first through hole 211 is provided on the side of the outer sleeve 21 close to the end of the stretching handle 12, and a first locking hole 212 is provided on the side of the outer sleeve 21 away from the end of the stretching handle 12. The first through hole 211, the first locking hole 212 and the second stretching channel 15 are coaxially arranged. A second through hole 221 is provided on the side of the inner sleeve 22 close to the end of the stretching handle 12, and a second locking hole 222 is provided on the side of the inner sleeve 22 away from the end of the stretching handle 12. The second through hole 221, the second locking hole 222 and the second stretching channel 15 are coaxially arranged.

[0040] The second locking portion 242 on the push-pull rod 24 is located between the first through hole 211 and the second through hole 221, and the second locking portion 242 abuts against the outer wall of the inner sleeve 22. The first locking portion 241 on the push-pull rod 24 can extend to the outside of the first locking hole 212, and the first locking portion 241 on the push-pull rod 24 can abut against the outer wall of the outer sleeve 21 located at the first locking hole 212.

[0041] The first clamping part 241 on the push-pull rod 24 is C-shaped, and the contours of the first clamping hole 212 and the second clamping hole 222 are consistent with the outer contour of the first clamping part 241, so as to ensure that the first clamping part 241 on the push-pull rod 24 can smoothly pass through the first clamping hole 212 and the second clamping hole 222. When in use, after the first clamping part 241 extends to the outside of the first clamping hole 212, the push-pull rod 24 is rotated. At this time, the C-shaped contour of the first clamping part 241 and the C-shaped contour of the first clamping hole 212 are mirrored, so that the first clamping part 241 abuts against the outer wall of the outer sleeve 21 at the first clamping hole 212. In this way, through the stable clamping connection, the closure of the opening surface of the inner sleeve 22 is more stable, avoiding the operator's manual maintenance for a long time, and reducing the difficulty of operation.

[0042] In this embodiment, the push-pull rod 24 is made of plastic, and one end of the push-pull rod 24 away from the collection sleeve 20 passes through the wall of the stretching handle 12 and extends outward, so that the operator can control the movement and rotation of the push-pull rod 24 in the collection sleeve 20. At the same time, the collection sleeve 20 is telescopically arranged in the second stretching channel 15. After the collection of human tissue is completed, the collection sleeve 20 is pulled out of the second stretching channel 15 as a whole by pulling the push-pull rod 24 to complete the excision of human tissue.

[0043] The present invention also provides an operating method for the snare with a tissue collection sleeve, which is as follows: S1: the operator manually holds the handheld handle 11, sets the annular structure of the coil 13 on the tissue part to be removed from the human body, pulls the stretching handle 12 to shrink the annular structure of the coil 13, and tightens it, and uses surgical scissors to cut the human tissue to be removed, thereby completing the removal of the human tissue part;

[0044] S2: the human tissue falls into the inner sleeve 22, the push-pull rod 24 is pushed forward, the opening surface of the inner sleeve 22 is closed, and the collection of the human tissue is completed;

[0045] S3: The push-pull rod 24 is rotated 180°, and the push-pull rod 24 is snap-fitted and connected to the outside of the outer casing 21 to prevent the collected human tissue from spilling out;

[0046] S4: The push-pull rod 24 is rotated 180° again and pulled backward, so that the push-pull rod 24 is separated from the outer sleeve 21, and the opening surface of the inner sleeve 22 is opened to receive new human tissue again;

[0047] S5: Repeat the above steps S1 to S4 to complete the reception;

[0048] S6: The operator pulls the push-pull rod 24 backwards, and the collecting sleeve 20 is pulled out of the second stretching channel 15 as a whole, completing the excision of the human tissue.

[0049] The present invention sets a collection sleeve 20 below the coil 13 of the snare to collect the human tissue after excision, effectively avoids the loss of human tissue, and improves the efficiency and safety of the operation. The present invention sets the collection sleeve 20 into an outer sleeve 21 and an inner sleeve 22, and the opening surface of the inner sleeve 22 can be closed, so that when the human tissue falls into the inner sleeve 22, the inner sleeve 22 can not only collect it, but also prevent the human tissue from slipping or overflowing, ensuring the stability of use. At the same time, the opening surface of the inner sleeve 22 can maintain a closed state for a long time and open repeatedly through the card embedding setting, thereby avoiding the operator's long-term manual maintenance, reducing the difficulty of operation, and reducing the production cost, and improving the stability of use.

[0050] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A snare with a tissue collection sleeve, comprising a snare body (10) and a collection sleeve (20) located at the end of the snare body (10), the snare body (10) comprising a hand-held handle (11), a stretching handle (12) slidably arranged in the hand-held handle (11), and a coil (13) telescopically arranged on the stretching handle (12), characterized in that: The collecting sleeve (20) is located on the opening side of the coil (13) on the snare body (10). The collecting sleeve (20) comprises an outer sleeve (21) and an inner sleeve (22). Both the outer sleeve (21) and the inner sleeve (22) are bag-shaped structures with an open top surface. The opening surface of the inner sleeve (22) can be opened and closed.

2. The snare with a tissue collection sleeve according to claim 1, wherein the outer sleeve (21) is fixedly connected to the end surface of the stretching handle (12), the inner sleeve (22) is installed inside the outer sleeve (21), the opening surface of the inner sleeve (22) is located below the coil (13), and the edge of the opening surface of the inner sleeve (22) is fixedly connected to the outer sleeve (21), and the side of the inner sleeve (22) close to the stretching handle (12) is separated from the outer sleeve (21), and the side of the inner sleeve (22) away from the stretching handle (12) is integrated with the outer sleeve (21).

3. The snare with a tissue collection sleeve according to claim 1, wherein a suture (223) is provided in the middle of the inner sleeve (22), and the suture (223) partially sews the inner sleeve (22) and the outer sleeve (21) together, and the suture (223) partially extends to the side of the inner sleeve (22) away from the stretching handle (12).

4. The snare with a tissue collection sleeve according to claim 1, wherein a first stretching channel (14) and a second stretching channel (15) are axially arranged in the stretching handle (12), and both ends of the first stretching channel (14) and the second stretching channel (15) respectively penetrate the wall of the stretching handle (12), and the first stretching channel (14) is located above the second stretching channel (15), and the coil (13) is movably arranged in the first stretching channel (14), and a push-pull rod (24) is slidably arranged in the second stretching channel (15), and the outer wall of the outer sleeve (21) is opposite to the opening of the second stretching channel (15), and the push-pull rod (24) can penetrate the wall of the outer sleeve (21) and the inner sleeve (22), and the push-pull rod (24) is rotatably arranged in the outer sleeve (21).

5. The snare with a tissue collection sleeve according to claim 4, wherein one end of the push-pull rod (24) is formed with a first locking portion (241) and a second locking portion (242), the first locking portion (241) penetrates through the walls of the outer sleeve (21) and the inner sleeve (22) and extends outward, and the second locking portion (242) is cooperatively connected between the outer sleeve (21) and the inner sleeve (22).

6. The snare with a tissue collection sleeve according to claim 5, wherein a first through hole (211) is provided on a side of the outer sleeve (21) close to the end of the stretching handle (12), and a first locking hole (212) is provided on a side of the outer sleeve (21) away from the end of the stretching handle (12), and the first through hole (211), the first locking hole (212) and the second stretching channel (15) are coaxially arranged; a second through hole (221) is provided on a side of the inner sleeve (22) close to the end of the stretching handle (12), and a second locking hole (222) is provided on a side of the inner sleeve (22) away from the end of the stretching handle (12), and the second through hole (221), the second locking hole (222) and the second stretching channel (15) are coaxially arranged.

7. The snare with a tissue collection sleeve according to claim 6, wherein the second engaging portion (242) on the push-pull rod (24) is located between the first through hole (211) and the second through hole (221), the second engaging portion (242) abuts against the outer wall of the inner sleeve (22), the first engaging portion (241) on the push-pull rod (24) can extend to the outside of the first engaging hole (212), and the first engaging portion (241) on the push-pull rod (24) can abut against the outer wall of the outer sleeve (21) located at the first engaging hole (212).

8. The snare with a tissue collection sleeve according to claim 6, wherein the first locking portion (241) on the push-pull rod (24) is C-shaped, and the contours of the first locking hole (212) and the second locking hole (222) are consistent with the outer contour of the first locking portion (241).

9. The snare with a tissue collecting sleeve according to claim 1, wherein the push-pull rod (24) is made of plastic, and one end of the push-pull rod (24) away from the collecting sleeve (20) penetrates the wall of the stretching handle (12) and extends outward, and the collecting sleeve (20) is telescopically arranged in the second stretching channel (15).

10. A method for operating a snare with a tissue collection sleeve applicable to any one of items 1 to 9 above, specifically as follows: S1: an operator manually holds the handheld handle (11), places the annular structure of the coil (13) on the part of the human body tissue to be removed, pulls the stretching handle (12) to shrink the annular structure of the coil (13), and tightens the part of the human body tissue to be removed, and uses surgical scissors to cut the human body tissue to be removed, thereby completing the removal of the human body tissue part; S2: the human tissue falls into the inner sleeve (22), the push-pull rod (24) is pushed forward, and the opening surface of the inner sleeve (22) is closed, thereby completing the collection of the human tissue; S3: The push-pull rod (24) is rotated 180°, and the push-pull rod (24) is snap-fitted and connected to the outside of the outer casing (21) to prevent the collected human tissue from spilling out; S4: the push-pull rod (24) is rotated 180 degrees again and pulled backward, so that the push-pull rod (24) is detached from the outer sleeve (21), and the opening surface of the inner sleeve (22) is opened to receive new human tissue; S5: Repeat the above steps S1 to S4 to complete the reception; S6: The operator pulls the push-pull rod (24) backwards, and the collecting sleeve (20) is pulled out of the second stretching channel (15) of the handheld handle (11) as a whole, thereby completing the excision of the human tissue.

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