Tissue clamp capable of stably positioning

Abstract

The invention belongs to the technical field of medical equipment, and discloses a stable positioning tissue clamp which comprises a sleeve, a supporting ring is fixed outside the sleeve, a push block is movably connected in the sleeve, a clamping mechanism is installed at one end of the sleeve, an extrusion mechanism is installed in the push block, and a limiting mechanism is installed at one end of the extrusion mechanism. Through cooperation of structures such as a first triggering piece, a first piston and a positioning needle, the device can press the first triggering piece and a second triggering piece, so that the first piston and a second piston extrude the space in a push block, then the interior of the push block is pressurized, compressed air is guided into a sleeve through guiding of an air conveying pipeline, and the device is more convenient to use. When the device is used for clamping the tissue, the positioning needle is pressed to make contact with the tail end of the positioning needle, then the positioning needle is extruded, the positioning needle can be inserted into the skin tissue of a patient after stretching out, then the tissue is clamped after stable positioning is kept, and the tissue clamping stability of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, in particular to a tissue clip which can be stably positioned. Background Art

[0002] In recent years, endoscopic tissue closure technology has become the most effective and clinically valuable method for surgical treatment of acute gastrointestinal tissue trauma repair and hemostasis due to its low trauma, fast tissue closure growth, low frequency of rebleeding, few complications, and definite efficacy. Endoscopic metal tissue clips are one of the more widely used tissue closure methods. Skilled operation in appropriate cases can effectively close tissue growth and prevent tissue re-tear, reduce adverse reactions, and greatly improve the safety and effectiveness of endoscopic treatment of gastrointestinal tissue tear and bleeding.

[0003] Patent No. CN112773430A discloses a tissue clamp, which relates to the field of medical device technology, and includes an opening and closing component and at least three clamping arms. The opening and closing component includes a pulling element, a clamping element and a limiting element. One end of the pulling element is used to connect to the conveying device, and the other end of the pulling element is fixedly connected to the clamping element. The limiting element is used to be detachably connected to the conveying device, and each clamping arm is arranged around the circumference of the limiting element. One end of the clamping arm is rotatably connected to the limiting element, and the other end of the clamping arm is a clamping end, which extends in a direction away from the limiting element. The pulling element can drive the clamping element to move, and the clamping element can drive each clamping end to approach each other to close, and fix each clamping arm in a closed state. The tissue clamp can expand the clamping range and reduce surgical risks.

[0004] However, when the tissue clamp is used, the tissue is only clamped by the clamping arm, which cannot ensure the stability of the clamping and cannot help medical personnel to stably position the tissue clamp. By setting a retractable positioning needle to penetrate into the tissue to assist in positioning, it can help medical personnel to perform stable positioning. Summary of the Invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a tissue clip that can be stably positioned.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a stably positioned tissue clip, comprising a sleeve, a support ring fixed to the outside of the sleeve, a push block movably connected to the inside of the sleeve, a clamping mechanism installed at one end of the sleeve, a squeezing mechanism installed at the inside of the push block, and a limiting mechanism installed at one end of the squeezing mechanism;

[0007] The clamping mechanism includes a connecting seat, a clamping arm and a torsion spring. The connecting seat is fixed to the outside of the sleeve. The inside of the connecting seat is rotatably connected to the clamping arm. One end of the clamping arm is installed with a torsion spring.

[0008] The extrusion mechanism includes a first trigger member and a first piston, the first trigger member is movably connected to the top of the push block, the first piston is fixed to the bottom end of the first trigger member, the first return spring is fixed to the bottom end of the first piston, the bottom end of the push block is movably connected to the second trigger member, the top end of the second trigger member is fixed to the second piston, and a gas pipeline is installed on the outside of the push block;

[0009] The limiting mechanism includes a mounting seat and a first limiting rod. The mounting seat is fixed to the top end of the second piston, and the first limiting rod is fixed to the top end of the mounting seat.

[0010] Preferably, an extension plate is fixed to the outside of the clamping arm, a steel wire rope is fixed to the outside of the extension plate, two groups of connecting seats and clamping arms are provided, and the connecting seats and clamping arms are symmetrically distributed about the central axis of the sleeve.

[0011] Preferably, the torsion spring is used to squeeze the clamp arm and keep it moving outward. A channel is opened inside the sleeve, and the channel is provided with two groups symmetrically distributed about the central axis of the sleeve. The steel wire rope passes through the channel and is fixedly connected to the push block.

[0012] Preferably, the outer wall of the first trigger member fits the inner wall of the push block, the first trigger member and the push block are slidably connected, the first piston and the push block are slidably connected, the outer wall of the second trigger member fits the inner wall of the push block, the second trigger member and the push block are slidably connected, and the second piston and the push block are slidably connected.

[0013] Preferably, two groups of the first return springs are provided, and the first return springs are symmetrically distributed about the central axis of the first piston. The first return springs are used to squeeze the first piston and the second piston and keep them in the tendency to expand. The input end of the gas pipeline is connected to a push block, and the output end of the gas pipeline is connected to a sleeve.

[0014] Preferably, a first limiting plate is fixed to the top end of the first limiting rod, a second limiting plate is sleeved on the outside of the first limiting rod, a limiting seat is fixed on the bottom end of the first piston, a second limiting rod is movably connected to the inside of the limiting seat, a second return spring is sleeved on the outside of the second limiting rod, and a limiting block is fixed on the outside of the second limiting rod.

[0015] Preferably, the outer wall of the first limiting rod fits the inner wall of the second limiting plate, the first limiting rod and the second limiting plate are slidably connected, and the diameter of the second limiting plate is larger than that of the first limiting plate.

[0016] Preferably, a hole is provided at the bottom end of the limit seat, the diameter of the hole is larger than the diameter of the second limit plate, two groups of second limit rods are provided, the second limit rods are symmetrically distributed about the central axis of the limit seat, the outer wall of the second limit rod fits the inner wall of the limit seat, and the second limit rod and the limit seat are slidably connected.

[0017] Preferably, the second return spring is used to squeeze the second limiting rod and the limiting block and keep them moving inward, and the outer wall of the limiting block is provided with an inclined surface.

[0018] Preferably, a trigger ring is fixed to the outside of the push block, and the trigger ring is provided with two groups symmetrically distributed about the central axis of the push block. A positioning needle is slidably connected to the inside of the sleeve, and a third return spring is provided on the outside of the positioning needle. The third return spring is used to squeeze the positioning needle and keep it moving inward. A limit valve is installed on the outside of the sleeve.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention cooperates with structures such as a first trigger member, a first piston, and a positioning needle, so that the device can press the first trigger member and the second trigger member, so that the first piston and the second piston squeeze the space inside the push block, thereby pressurizing the interior of the push block, and guide the compressed air to the interior of the sleeve through the guidance of the air supply pipe, so that it contacts the end of the positioning needle, thereby squeezing the positioning needle, so that the positioning needle can be extended and penetrate into the patient's skin tissue, and then maintain stable positioning and clamp the tissue, thereby improving the stability of the device in clamping tissue.

[0021] The present invention cooperates with structures such as a mounting seat, a first limit rod, and a first limit plate, so that when the first piston and the second piston are pressed, the device can hook the first limit plate through the limit block and then connect the first piston and the second piston, so that the pressure in the cavity remains stable, thereby ensuring the extension length of the positioning needle. When the positioning needle needs to be retracted, the first limit rod and the second limit plate can be separated by continuing to press, thereby releasing the pressure on the positioning needle and causing it to be reset by the third reset spring, thereby achieving the purpose of facilitating the device to freely extend the positioning needle and ensuring the stable positioning of the positioning needle and the skin tissue.

[0022] The present invention provides a connection seat, clamping arms, torsion springs and other structures so that when the device needs to clamp tissue, the push block is pulled by the trigger ring, and then the two sets of clamping arms are pulled together by two sets of steel wire ropes to clamp the tissue. After releasing the grip, the torsion spring resets the clamping arms and makes them expand again, thereby achieving the purpose of making it easier for medical personnel to use the device to clamp tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the clamping mechanism of the present invention;

[0025] Figure 3 This is a schematic diagram of the expanded structure of the clamping mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0028] Figure 6 It is a schematic structural diagram of the extrusion mechanism of the present invention;

[0029] Figure 7 Schematic diagram of the limiting mechanism structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the overall structure of the present invention.

[0031] In the figure: 1. sleeve; 2. support ring; 3. push block; 4. trigger ring; 5. clamping mechanism; 501. connecting seat; 502. clamping arm; 503. torsion spring; 504. extension plate; 505. wire rope; 6. extrusion mechanism; 601. first trigger member; 602. first piston; 603. first return spring; 604. second piston; 605. second trigger member; 606. gas pipeline; 7. limiting mechanism; 701. mounting seat; 702. first limiting rod; 703. first limiting plate; 704. second limiting plate; 705. limiting seat; 706. second limiting rod; 707. second return spring; 708. limiting block; 8. positioning needle; 9. third return spring; 10. limiting valve. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 8As shown, the present invention provides a stably positioned tissue clamp, including a sleeve 1, a support ring 2 is fixed to the outside of the sleeve 1, a push block 3 is movably connected to the inside of the sleeve 1, a clamping mechanism 5 is installed at one end of the sleeve 1, an extrusion mechanism 6 is installed inside the push block 3, a limiting mechanism 7 is installed at one end of the extrusion mechanism 6, a trigger ring 4 is fixed to the outside of the push block 3, the trigger ring 4 is provided with two groups symmetrically distributed about the central axis of the push block 3, a positioning needle 8 is slidably connected to the inside of the sleeve 1, and a third reset spring 9 is provided on the outside of the positioning needle 8, the third reset spring 9 is used to squeeze the positioning needle 8 and keep it moving inward, and a limit valve 10 is installed on the outside of the sleeve 1.

[0034] The above solution is adopted: by inserting a finger into the trigger ring 4, the push block 3 can be slid more effortlessly, thereby controlling the clamping arm 502 to clamp the patient's skin tissue. When the length of the positioning needle 8 needs to be maintained at a specified position and does not need to be fully extended, the limit valve 10 is rotated to cut off the channel connecting the sleeve 1 and the extrusion mechanism 6, so that the air pressure in the cavity from the limit valve 10 to the positioning needle 8 will not change, thereby ensuring that the position of the positioning needle 8 will not be offset.

[0035] like Figures 1 to 5 As shown, the clamping mechanism 5 includes a connecting seat 501, a clamping arm 502 and a torsion spring 503. The connecting seat 501 is fixed to the outside of the sleeve 1. The internal rotation of the connecting seat 501 is connected to the clamping arm 502. One end of the clamping arm 502 is installed with a torsion spring 503. The outside of the clamping arm 502 is fixed with an extension plate 504. The outside of the extension plate 504 is fixed with a steel wire rope 505. The connecting seat 501 and the clamping arm 502 are provided in two groups, and the connecting seat 501 and the clamping arm 502 are symmetrically distributed about the central axis of the sleeve 1.

[0036] like Figures 1 to 5 As shown, the torsion spring 503 is used to squeeze the clamp arm 502 and keep it moving outward. A channel is opened inside the sleeve 1, and the channel is provided with two groups symmetrically distributed about the central axis of the sleeve 1. The wire rope 505 passes through the channel and is fixedly connected to the push block 3.

[0037] The above scheme is adopted: the push block 3 is pulled by the trigger ring 4, and then the two sets of clamping arms 502 are pulled together by the two sets of steel wire ropes 505 to clamp the tissue. After releasing the hand, the torsion spring 503 resets the clamping arm 502, so that the clamping arm 502 is expanded again, thereby completing the opening and closing of the clamping.

[0038] like Figures 1 to 6As shown, the extrusion mechanism 6 includes a first trigger member 601 and a first piston 602. The first trigger member 601 is movably connected to the top of the push block 3. The first piston 602 is fixed to the bottom end of the first trigger member 601. The first return spring 603 is fixed to the bottom end of the first piston 602. The bottom end of the push block 3 is movably connected to the second trigger member 605. The top end of the second trigger member 605 is fixed to the second piston 604. An air supply pipeline 606 is installed on the outside of the push block 3. The outer wall of the first trigger member 601 fits the inner wall of the push block 3. The first trigger member 601 and the push block 3 are slidably connected. The first piston 602 is slidably connected to the push block 3, the outer wall of the second trigger member 605 fits the inner wall of the push block 3, the second trigger member 605 is slidably connected to the push block 3, the second piston 604 is slidably connected to the push block 3, and two groups of first return springs 603 are provided. The first return springs 603 are symmetrically distributed about the central axis of the first piston 602. The first return springs 603 are used to squeeze the first piston 602 and the second piston 604 and keep them in the tendency to expand. The input end of the gas pipeline 606 is connected to the push block 3, and the output end of the gas pipeline 606 is connected to the sleeve 1.

[0039] The above scheme is adopted: by pressing the first trigger member 601 and the second trigger member 605, the first piston 602 and the second piston 604 squeeze the space inside the push block 3, thereby pressurizing the inside of the push block 3, and guiding the compressed air into the interior of the sleeve 1 through the guidance of the air supply pipe 606, so that it contacts the end of the positioning needle 8, and then squeezes the positioning needle 8, so that the positioning needle 8 can be extended and inserted into the patient's skin tissue, thereby maintaining stable positioning, avoiding shaking of the pipeline, and ensuring the firmness of the clamping.

[0040] like Figures 1 to 7 As shown, the limiting mechanism 7 includes a mounting seat 701 and a first limiting rod 702. The mounting seat 701 is fixed to the top of the second piston 604. The top of the mounting seat 701 is fixed with the first limiting rod 702. The top of the first limiting rod 702 is fixed with the first limiting plate 703. The outer surface of the first limiting rod 702 is provided with a second limiting plate 704. The outer wall of the first limiting rod 702 fits the inner wall of the second limiting plate 704. The first limiting rod 702 and the second limiting plate 704 are slidably connected. The diameter of the second limiting plate 704 is larger than the diameter of the first limiting plate 703.

[0041] like Figures 1 to 7As shown, the bottom end of the first piston 602 is fixed with a limiting seat 705, and the internal movably connected to the limiting seat 705 is a second limiting rod 706, and the bottom end of the limiting seat 705 is provided with a hole, the diameter of the hole is larger than the diameter of the second limiting plate 704, and two groups of second limiting rods 706 are provided. The second limiting rods 706 are symmetrically distributed about the central axis of the limiting seat 705, and the outer wall of the second limiting rod 706 fits the inner wall of the limiting seat 705. The second limiting rod 706 and the limiting seat 705 are slidingly connected, and the outer side of the second limiting rod 706 is provided with a second return spring 707, and the outer side of the second limiting rod 706 is fixed with a limiting block 708. The second return spring 707 is used to squeeze the second limiting rod 706 and the limiting block 708, and keep them moving inward, and the outer wall of the limiting block 708 is provided with an inclined surface.

[0042] The above scheme is adopted: after the first limiting plate 703 squeezes the limiting block 708, the limiting block 708 contracts inward, allowing the first limiting plate 703 to pass. At this time, the second return spring 707 resets the limiting block 708 so that the limiting block 708 is located at the bottom end of the first limiting plate 703, completing the connection between the mounting seat 701 and the limiting seat 705, and then completing the connection between the first piston 602 and the second piston 604, completing the limiting. When it needs to be removed, continue pressing so that the second limiting plate 704 squeezes the limiting block 708, and the limiting block 708 contracts inward, allowing the second limiting plate 704 to pass. At this time, the second return spring 707 resets the limiting block 708, and then lifts the second limiting plate 704 through the reset limiting block 708. At this time, the first piston 602 and the second piston 604 are separated by the restoring force of the first return spring 603, and the removal is completed.

[0043] The working principle and use process of the present invention are as follows: by inserting a finger into the trigger ring 4, the push block 3 can be slid with less effort, thereby controlling the clamping arm 502 to clamp the patient's skin tissue, and the push block 3 is pulled by the trigger ring 4, and then the two sets of clamping arms 502 are pulled together by the two sets of steel wire ropes 505 to clamp the tissue, and after releasing the hand, the torsion spring 503 resets the clamping arm 502, so that the clamping arm 502 is expanded again, thereby completing the opening and closing of the clamping, and the device can press the first trigger member 601 and the second trigger member 605, so that the first piston 602 and The second piston 604 squeezes the space inside the push block 3, thereby pressurizing the interior of the push block 3, and guides the compressed air into the interior of the sleeve 1 through the guidance of the air supply pipe 606, so that it contacts the end of the positioning needle 8, thereby squeezing the positioning needle 8, so that the positioning needle 8 can be inserted into the patient's skin tissue after being extended, thereby maintaining a stable positioning, avoiding shaking of the pipeline, and ensuring the firmness of the clamping. When the first piston 602 and the second piston 604 are pressed, the first limit plate 703 squeezes the limit block 708, and the limit block 708 contracts inward, so that The first limiting plate 703 passes, and the second return spring 707 resets the limit block 708 so that the limit block 708 is located at the bottom end of the first limiting plate 703, completing the connection between the mounting seat 701 and the limit seat 705, and then completing the connection between the first piston 602 and the second piston 604. The limiting is completed. When it needs to be removed, continue to press so that the second limiting plate 704 squeezes the limit block 708, and the limit block 708 contracts inward, so that the second limiting plate 704 passes. At this time, the second return spring 707 resets the limit block 708, and then through the reset The limit block 708 lifts the second limit plate 704. At this time, the first piston 602 and the second piston 604 are separated by the restoring force of the first return spring 603, completing the disassembly, and then releasing the pressure on the positioning needle 8, so that it is reset by the third return spring 9. When the length of the positioning needle 8 needs to be maintained at the specified position and does not need to be fully extended, the limit valve 10 is rotated to cut off the channel connecting the sleeve 1 and the extrusion mechanism 6, so that the air pressure in the cavity from the limit valve 10 to the positioning needle 8 will not change, thereby ensuring that the position of the positioning needle 8 will not be offset.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tissue clip capable of stable positioning, comprising a sleeve (1), characterized in that: A support ring (2) is fixed to the outside of the sleeve (1), a push block (3) is movably connected to the inside of the sleeve (1), a clamping mechanism (5) is installed at one end of the sleeve (1), an extrusion mechanism (6) is installed inside the push block (3), and a limiting mechanism (7) is installed at one end of the extrusion mechanism (6); The clamping mechanism (5) comprises a connecting seat (501), a clamping arm (502) and a torsion spring (503); the connecting seat (501) is fixed to the outside of the sleeve (1); the clamping arm (502) is rotatably connected to the inside of the connecting seat (501); and a torsion spring (503) is installed at one end of the clamping arm (502); The squeezing mechanism (6) comprises a first triggering member (601) and a first piston (602), wherein the first triggering member (601) is movably connected to the top of the push block (3), the first piston (602) is fixed to the bottom of the first triggering member (601), the first return spring (603) is fixed to the bottom of the first piston (602), the bottom of the push block (3) is movably connected to the second triggering member (605), the top of the second triggering member (605) is fixed to the second piston (604), and a gas pipeline (606) is installed on the outside of the push block (3); The limiting mechanism (7) comprises a mounting seat (701) and a first limiting rod (702); the mounting seat (701) is fixed to the top end of the second piston (604); and the first limiting rod (702) is fixed to the top end of the mounting seat (701).

2. The stably positionable tissue clip according to claim 1, characterized in that: An extension plate (504) is fixed to the outside of the clamping arm (502), and a steel wire rope (505) is fixed to the outside of the extension plate (504). The connecting seat (501) and the clamping arm (502) are provided in two groups, and the connecting seat (501) and the clamping arm (502) are symmetrically distributed about the central axis of the sleeve (1).

3. The stably positionable tissue clip according to claim 2, characterized in that: The torsion spring (503) is used to squeeze the clamp arm (502) and keep it moving outward. A channel is opened inside the sleeve (1). The channel is provided with two groups of symmetrical distributions about the central axis of the sleeve (1). The steel wire rope (505) passes through the channel and is fixedly connected to the push block (3).

4. The stably positionable tissue clip according to claim 1, characterized in that: The outer wall of the first trigger member (601) fits the inner wall of the push block (3), the first trigger member (601) and the push block (3) are slidably connected, the first piston (602) and the push block (3) are slidably connected, the outer wall of the second trigger member (605) fits the inner wall of the push block (3), the second trigger member (605) and the push block (3) are slidably connected, and the second piston (604) and the push block (3) are slidably connected.

5. The stably positionable tissue clip according to claim 1, characterized in that: Two groups of the first return springs (603) are provided. The first return springs (603) are symmetrically distributed about the central axis of the first piston (602). The first return springs (603) are used to squeeze the first piston (602) and the second piston (604) and keep them in a tendency to expand. The input end of the gas pipeline (606) is connected to a push block (3), and the output end of the gas pipeline (606) is connected to a sleeve (1).

6. The stably positionable tissue clip according to claim 1, characterized in that: A first limiting plate (703) is fixed to the top end of the first limiting rod (702), a second limiting plate (704) is sleeved on the outside of the first limiting rod (702), a limiting seat (705) is fixed to the bottom end of the first piston (602), a second limiting rod (706) is movably connected inside the limiting seat (705), a second return spring (707) is sleeved on the outside of the second limiting rod (706), and a limiting block (708) is fixed on the outside of the second limiting rod (706).

7. The stably positionable tissue clip according to claim 6, characterized in that: The outer wall of the first limiting rod (702) fits the inner wall of the second limiting plate (704), the first limiting rod (702) and the second limiting plate (704) are slidably connected, and the diameter of the second limiting plate (704) is greater than the diameter of the first limiting plate (703).

8. The stably positionable tissue clip according to claim 6, characterized in that: A hole is provided at the bottom end of the limiting seat (705), the diameter of the hole being larger than the diameter of the second limiting plate (704), two groups of the second limiting rods (706) are provided, the second limiting rods (706) are symmetrically distributed about the central axis of the limiting seat (705), the outer wall of the second limiting rod (706) is in contact with the inner wall of the limiting seat (705), and the second limiting rod (706) and the limiting seat (705) are slidably connected.

9. The stably positionable tissue clip according to claim 6, characterized in that: The second return spring (707) is used to squeeze the second limiting rod (706) and the limiting block (708) and keep them moving inwards. The outer wall of the limiting block (708) is provided with an inclined surface.

10. The stably positionable tissue clip according to claim 1, characterized in that: A trigger ring (4) is fixed to the outside of the push block (3), and the trigger ring (4) is provided with two groups symmetrically distributed about the central axis of the push block (3). A positioning needle (8) is slidably connected to the inside of the sleeve (1), and a third return spring (9) is sleeved on the outside of the positioning needle (8). The third return spring (9) is used to squeeze the positioning needle (8) and keep it moving inward. A limit valve (10) is installed on the outside of the sleeve (1).

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