A belt bin assembly, hemostatic forceps and driving method of hemostatic forceps

Abstract

The present invention proposes a band bin assembly, comprising a band bin structure, a band feeding piece, a firing rod, a first shaping rod, a clamp arm and a sleeve; the band bin structure comprises at least one tourniquet and a band bin for accommodating at least one tourniquet; the band bin is fixedly accommodated in the sleeve; the proximal end of the clamp arm is fixedly installed in the sleeve, the distal end of the clamp arm has a hook portion extending out of the sleeve, and the clamp arm is provided with a band accommodating groove with the proximal end located in the sleeve and the distal end located inside the hook portion; the distal end of the band feeding piece is inserted into the sleeve to cooperate with the tourniquet; the firing rod is penetrated into the sleeve to cooperate with the hook portion; the proximal end of the first shaping rod is provided with a linkage member inserted into the sleeve, the proximal side of the linkage member is provided with a first reset member, the first reset member is located between the band feeding piece and the linkage member, the distal end of the linkage member abuts against the band feeding piece, and the distal end of the first shaping rod has a first concave arc surface facing the lower part of the hook portion. The clamping of a blood vessel can be achieved, and the blood vessel can be stably kept in the jaws formed by the hook portion during the clamping.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a cartridge assembly, hemostatic forceps, and a driving method for the hemostatic forceps. Background Technology

[0002] During surgical procedures, to fully expose the surgical field, it is necessary to ligate the blood vessels surrounding the target tissue to stop bleeding. Hemostasis has become one of the core basic surgical techniques. Almost every surgical procedure on any part of the human body involves bleeding and hemostasis, which is generally achieved using hemostatic forceps and ligature clips for closure.

[0003] During surgical procedures, surgeons use hemostatic forceps to ligate blood vessels surrounding the target tissue. Typically, the vessel to be clamped is first placed within the jaws formed by two clamping arms, with a V-shaped ligation clip pre-placed within the jaws. The vessel is then clamped by closing the two clamping arms. However, with existing hemostatic forceps, the vessel is prone to slipping out of the jaws during clamping, leading to inadequate hemostasis. Furthermore, because the diameter of the vessels to be clamped varies, V-shaped ligation clips often require multiple sizes to accommodate different diameters, making the procedure cumbersome. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the above-mentioned technology, the present invention provides solutions to at least some extent. Therefore, one object of the present invention is to provide a clamping assembly capable of clamping blood vessels, and during the clamping process, the blood vessel can be stably held within the jaws formed by the hook portion.

[0006] A second objective of this invention is to provide a hemostatic forceps having the aforementioned compartment assembly.

[0007] A third objective of this invention is to provide a driving method for the aforementioned hemostatic forceps.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] In a first aspect, the present invention provides a tape magazine assembly, including a tape magazine structure, a tape feed plate, a firing lever, a first shaping lever, a clamp arm, and a sleeve;

[0011] The banding structure includes at least one strip-shaped tourniquet and a banding compartment for accommodating the at least one strip-shaped tourniquet. The at least one tourniquet is arranged sequentially in the proximal direction and stored inside the banding compartment. The banding compartment is fixedly housed within a cannula. The proximal end of the clamp arm is fixedly installed within the cannula, and the distal end of the clamp arm has a hook portion extending beyond the cannula. A banding groove is formed on the clamp arm. The first end of the banding groove is located inside the cannula and communicates with the internal space of the banding compartment to form a banding delivery channel. The second end of the banding groove is located inside the hook portion and is curved along the shape of the hook portion. The distal end of the banding delivery piece is inserted into the cannula and mates with the tourniquet. The firing rod is inserted through the cannula and mates with the hook portion.

[0012] The proximal end of the first shaping rod is inserted into the sleeve. The proximal end of the first shaping rod has a linkage member. A first reset member is provided on the proximal side of the linkage member. The first reset member is located between the feeding strip and the linkage member. The distal end of the linkage member abuts against the feeding strip. The distal end of the first shaping rod has a first concave arc surface facing the lower part of the hook.

[0013] The feeding strip can move between the initial feeding position, the shaping position and the feeding end position arranged from near to far, and the first shaping rod can move between the initial shaping rod position and the shaping rod end position arranged from near to far;

[0014] During the clamping of blood vessels, the tourniquet located at the farthest end of the delivery channel is the tourniquet to be inserted. When the delivery plate is in the initial delivery position, the first shaping rod is in the initial shaping rod position, and the first resetting member provides pre-tightening force between the delivery plate and the linkage member. As the delivery plate moves further away, it pushes all the tourniquets in the delivery channel to move further away. When the delivery plate is in the shaping position, the first shaping rod moves to the shaping rod termination position. The first shaping rod moves to the free end of the hook portion. When the delivery plate is in the delivery termination position, the distal end of the tourniquet to be inserted extends beyond the receiving groove. The distal end of the tourniquet to be inserted is shaped and bent into a ring shape by the receiving groove and the first concave arc surface.

[0015] The firing lever moves further away, snapping shut on the loop of the tourniquet to be inserted.

[0016] Optionally, when the feeding strip is in the shaping position, the first shaping rod moves to abut against the free end of the hook portion, and the first concave arc surface connects with the second end bottom surface of the receiving groove.

[0017] Optionally, the top of the feeding strip is provided with a groove extending in the proximal direction, and the bottom of the proximal end of the first shaping rod has a columnar part extending in the vertical direction as a linkage member; the columnar part extends into the groove from top to bottom, and the distal end of the columnar part abuts against the distal end wall of the groove, and the first reset member is located between the proximal end of the columnar part and the proximal end wall of the groove.

[0018] Optionally, the receiving groove includes a straight groove extending along a straight line and an arc-shaped groove extending along an arc. The first end of the straight groove is used for the tourniquet to enter, and the second end of the straight groove is connected to the first end of the arc-shaped groove. The second end of the arc-shaped groove is located at the free end of the hook portion, and the second end of the arc-shaped groove has an opening facing the sleeve for the tourniquet to be inserted to extend out of the receiving groove. The straight groove extends in the same direction as the axial direction of the band chamber, and the arc-shaped groove is an arc-shaped groove extending along a circular arc.

[0019] Optionally, the arc along the first concave arc surface and the arc along the bottom surface of the arc groove belong to the same circle; when the feeding strip is in the shaping position, the far end of the first shaping rod abuts against the free end of the hook, and the first concave arc surface is connected to the bottom surface of the arc groove.

[0020] Optionally, the belt assembly also includes a second shaping rod, the proximal end of which is fixedly installed inside the sleeve, and the distal end of which extends outside the sleeve. The second shaping rod is located between the first shaping rod and the clamp arm. The distal end of the second shaping rod has a second concave arc surface facing the upper part of the hook portion. When the belt feeder is in the shaping position, the arc along the first concave arc surface, the arc along the second concave arc surface, and the arc along the bottom surface of the arc groove are on the same circle.

[0021] Optionally, the proximal end of the clamp arm is fixedly installed at the bottom of the sleeve. The first shaping rod, firing rod, tape feeder, tape compartment structure and clamp arm are arranged sequentially from top to bottom inside the sleeve. The distal end of the firing rod has a strip hole, and the columnar part passes through the strip hole and connects with the tape feeder.

[0022] Optionally, when the feed strip is in the shaping position, the distal end of the columnar portion abuts against the distal end wall of the strip hole.

[0023] Secondly, the present invention provides a hemostatic forceps having a packing assembly as described above.

[0024] Thirdly, the present invention provides a method for driving a hemostat as described above, comprising the following steps:

[0025] S1. After the blood vessel to be clamped is hooked at the hook of the clamp arm, the delivery strip starts from the initial delivery position and the first shaping rod starts from the initial shaping rod position, and they move together to the distance. The delivery strip pushes all the tourniquets in the bandage compartment structure to move to the distance. The tourniquet to be inserted is pushed into the bandage groove and continues to move along the bandage groove until the delivery strip moves to the shaping position. The first shaping rod moves to the shaping rod end position. At this time, the distal end of the tourniquet to be inserted is accommodated in the bandage groove. The first shaping rod moves to the free end of the hook.

[0026] S2. The feeding plate continues to move further away from the shaping position. The feeding plate pushes the tourniquet to be inserted along the groove of the receiving belt. During the forward movement, the distal end of the tourniquet to be inserted is shaped and bent along the groove of the receiving belt and the first concave arc surface in sequence until the feeding plate moves to the feeding end position. At this time, the distal end of the tourniquet to be inserted is shaped and bent into a ring shape by the groove of the receiving belt and the first concave arc surface.

[0027] S3. The firing mechanism moves to the firing termination position, causing the distal end of the firing mechanism to snap into the annular part of the tourniquet to be inserted.

[0028] S4. The firing mechanism moves from the firing termination position to the firing initial position. Then the feed strip moves from the feed termination position to the shaping position. After that, the feed strip and the first shaping rod move together from the shaping position to the shaping rod termination position until the feed strip moves to the feed initial position and the first shaping rod moves to the shaping rod initial position.

[0029] (III) Beneficial Effects

[0030] The beneficial effects of this invention are:

[0031] This invention proposes a novel approach to clamping blood vessels using a tourniquet in conjunction with a clamp arm having a hooked end. The clamp arm, with its distal hooked end, grips the vessel, facilitating hooking and holding it stably within the jaws formed by the hook. This prevents the vessel from slipping out of the jaws during clamping, ensuring a stable and effective clamping process. Furthermore, the combination of the first shaping rod, tourniquet, and clamp arm allows the distal end of the tourniquet to stably form a ring that surrounds the blood vessel. A firing mechanism then snaps the ring closed, clamping the vessel stably.

[0032] Furthermore, the cartridge assembly proposed in this invention can control the clamping force applied to the blood vessel to be clamped by controlling the stroke of the firing structure and the hook part of the clamp arm. Thus, a single cartridge assembly can be used to clamp blood vessels of different diameters, eliminating the need to frequently change different models of hemostatic forceps depending on the diameter of the blood vessel to be clamped. Specifically, a clamping assembly can be used to clamp blood vessels of different thicknesses, as explained below: Thicker blood vessels have thicker walls, while thinner blood vessels have thinner walls. To ensure stable clamping of the blood vessel by the clamping assembly, the distance between the firing mechanism and the hook should be less than or equal to two times the thickness of the blood vessel wall to be clamped. However, the distance between the firing mechanism and the hook should not be too less than two times the thickness of the blood vessel wall, as this would cause necrosis of the blood vessel wall tissue. The clamping assembly proposed in this invention, by controlling the stroke of the firing mechanism, can adjust the distance between the firing mechanism and the hook to be appropriately less than or equal to two times the thickness of the blood vessel wall to be clamped. This means it can control the clamping force applied to the blood vessel by the firing mechanism and the hook of the clamping arm, thus making it suitable for clamping blood vessels of different thicknesses. Attached Figure Description

[0033] The present invention is described with reference to the following figures:

[0034] Figure 1 This is a schematic diagram of the hemostat provided in Embodiment 1 of the present invention;

[0035] Figure 2 This is a cross-sectional schematic diagram of the hemostat provided according to Embodiment 1 of the present invention;

[0036] Figure 3 yes Figure 2 Enlarged schematic diagram of the distal structure of the hemostat;

[0037] Figure 4 This is a three-dimensional structural diagram of the clamp arm provided according to Embodiment 1 of the present invention;

[0038] Figure 5 yes Figure 4 Enlarged schematic diagram of the distal end of the middle clamp arm;

[0039] Figure 6 This is a rear view schematic diagram of the clamp arm provided in Embodiment 1 of the present invention;

[0040] Figure 7 This is a schematic diagram of the transmission component provided in Embodiment 1 of the present invention;

[0041] Figure 8 This is a partial structural diagram of the compartment provided in Embodiment 1 of the present invention.

[0042] [Explanation of Labels in the Attached Image]

[0043] 1: Components with a bay;

[0044] 11: Pipe body; 12: Casing;

[0045] 2: Pliers arm;

[0046] 21: Hook portion; 22: Receiving groove; 23: Straight groove; 24: Arc groove; 26: First mounting groove; 27: Second mounting groove; 28: First retaining strip; 29: Second retaining strip; 30: Second reset component; 31: Third reset component; 32: First guide surface; 33: Second guide surface; 34: Third guide surface; 35: Fourth guide surface;

[0047] 41: Tourniquet; 42: Traction chamber; 43: Tourniquet for forceps to be inserted; 44: Side top wall; 45: One-way stop groove; 46: Stop wall; 47: Sliding wall;

[0048] 50: Firing lever; 51: Strike head; 52: Strike surface; 53: Strip hole;

[0049] 6: Transmission components;

[0050] 61: Elastic pusher; 62: First raised end; 63: Elastic stop; 64: Second raised end; 65: Horizontal part; 66: Inclined part; 67: Fixed end;

[0051] 7: Send the tape;

[0052] 71: One-way push groove; 72: Push wall; 73: Inclined wall; 74: First reset component; 75: Slide groove;

[0053] 8: Adapter;

[0054] 81: Insertion channel; 82: Drive shaft;

[0055] 91: First shaping rod; 92: First concave arc surface; 93: First straight rod; 94: First arc rod; 95: Second shaping rod; 96: Second concave arc surface; 97: Second straight rod; 98: Second arc rod; 99: Columnar part. Detailed Implementation

[0056] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient. The directional terms "upper," "lower," "front," "back," "left," and "right" used in this document are... Figure 1 The orientation is taken as a reference, where the direction from near to far is also the direction from back to front.

[0057] Example 1

[0058] like Figures 1 to 3As shown, this embodiment provides a hemostat, which includes an adapter 8 and a cartridge assembly 1.

[0059] like Figures 1 to 3 As shown, the tape magazine assembly 1 includes an actuation structure (the actuation structure and its working principle are described in Chinese patent CN201911021573.1, filed on October 25, 2019, and published on April 27, 2021. This invention cites this patent in its entirety and will not repeat it here), a tape magazine structure, a tape feed plate 7, a firing lever 50, a first shaping lever 91, a clamp arm 2, and a tube body 11 and a sleeve 12 arranged sequentially from near to far.

[0060] The distal end of the tube body 11 is connected to the proximal end of the sleeve 12, and the proximal end of the sleeve 12 is fixedly connected to the distal end of the tube body 11. The tube body 11 can be the proximal shell of the compartment assembly 1, or it can be a component inside the proximal shell of the compartment assembly 1. The tube body 11 itself can be a single piece or a separate piece. One of the functions of the tube body 11 is to provide a limiting structure on its inner wall to limit the movement position of the moving parts.

[0061] The actuation structure is housed within the tube body 11. The packing structure includes at least one strip-shaped tourniquet 41 and a packing compartment 42 for accommodating the at least one strip-shaped tourniquet 41. The at least one tourniquet 41 is arranged sequentially in the proximal direction and stored inside the packing compartment 42. The packing structure is housed within the sleeve 12 and is fixedly connected to the sleeve 12. The proximal end of the clamp arm 2 is fixedly installed within the sleeve 12. The distal end of the clamp arm 2 has a hook portion 21 that extends beyond the sleeve 12. A packing groove 22 is provided on the clamp arm 2. The proximal end of the packing groove 22 (i.e., the first end of the packing groove 22) is located within the sleeve 12 and communicates with the internal space of the packing compartment to form a packing channel. The distal end of the packing groove 22 (i.e., the second end of the packing groove 22) is located inside the hook portion 21 (i.e., the side of the hook portion 21 facing the sleeve 12) and is bent along the shape of the hook portion 21. The distal end of the feeding strip 7 is inserted into the sleeve 12, and the feeding strip 7 cooperates with the tourniquet 41. The proximal end of the feeding strip 7 is inserted into the tube body 11, and the proximal end of the feeding strip 7 is connected to the actuating structure so that the actuating structure drives the feeding strip 7 to move in the proximal direction. This is used to push the tourniquet 41 in the feeding channel to move distally (when the actuating structure drives the feeding strip 7 to move distally), and to reset the feeding strip 7 to its initial state after pushing the tourniquet 41 (when the actuating structure drives the feeding strip 7 to move proximally). The proximal end of the first shaping rod 91 is inserted into the sleeve 12. The proximal end of the first shaping rod 91 has a linkage member. A first reset member 74 is provided on the proximal side of the linkage member. The first reset member 74 is located between the feeding strip 7 and the linkage member. The distal part of the linkage member abuts against the feeding strip 7. The distal end of the first shaping rod 91 has a first concave arc surface 92 facing the lower part of the hook portion 21. The feeding strip 7 can move between the initial feeding position, the shaping position and the feeding end position arranged from near to far, and the first shaping rod 91 can move between the initial shaping position and the shaping rod end position arranged from near to far. During the clamping of blood vessels, the tourniquet located at the farthest end of the delivery channel is the tourniquet to be inserted. When the delivery plate 7 is in the initial delivery position, the first shaping rod 91 is in the initial shaping rod position, and the first resetting member 74 provides pre-tightening force between the delivery plate 7 and the linkage member. As the delivery structure moves further, all tourniquets in the delivery channel are pushed further. When the delivery plate 7 is in the shaping position, the first shaping rod 91 moves to the shaping rod termination position. At this time, the distal end of the tourniquet to be inserted 43 is accommodated within the receiving groove 22, and the first shaping rod 91 moves to the free end of the hook portion 21. When the delivery plate 7 is in the delivery termination position, the distal end of the tourniquet to be inserted 43 extends beyond the receiving groove 22. The distal end of the tourniquet to be inserted 43 is shaped and bent into a ring shape by the receiving groove 22 and the first concave arc surface 92. The distal end of the tourniquet to be inserted 43 is located near the bottom of the hook portion 21.The distal end of the firing mechanism passes through the cannula and mates with the hook portion. The proximal end of the firing mechanism is inserted into the tube body 11 and connected to the actuating structure. After the feeding plate 7 completes the feeding, the actuating structure drives the firing mechanism to move in the proximal direction. This is used (when the actuating structure drives the firing mechanism to move distally) for the firing mechanism to engage the annular portion of the tourniquet 43 to be inserted, and (when the actuating structure drives the firing mechanism to move proximally) for resetting the firing mechanism to its initial state after engaging the tourniquet 43. Here, the term "annular" in this invention refers to any enclosed shape capable of forming a hollow structure, not just a circular ring.

[0062] In the initial state of the tape chamber assembly 1, the tape delivery plate 7 is located at the initial tape delivery position, the first shaping rod 91 is located at the initial shaping rod position, and the firing mechanism is located at the initial firing position. The hook portion 21 of the clamp arm 2 in the tape chamber assembly 1 is used to hook the blood vessel to be clamped. Then, the actuation mechanism drives the tape delivery plate 7 and the first shaping rod 91 to move distally together. During the movement of the tape delivery plate 7 from the initial tape delivery position to the shaping position, the tape delivery plate 7 pushes all the tourniquets 41 in the tape delivery channel distally, including pushing the tourniquet 43 to be inserted along the tape-receiving groove 22. When the tape delivery plate 7 moves to the shaping position, the first shaping rod 91 moves to the shaping rod termination position. At this time, the distal end of the tourniquet 43 to be inserted is accommodated within the tape-receiving groove 22, and the first shaping rod 91 moves to the free end adjacent to the hook portion 21. The tape delivery plate 7 moves from the initial position to the shaping position. During the movement from the shaping position to the tape delivery termination position, the first shaping rod 91 remains stationary, the first resetting member 74 yields, and the tape delivery plate 7 pushes the tourniquet 43 to continue advancing along the receiving groove 22. Simultaneously, the distal end of the tourniquet 43 is shaped and bent sequentially along the receiving groove 22 and the first concave arc surface 92. When the tape delivery plate 7 moves to the tape delivery termination position, the distal end of the tourniquet 43 is shaped and bent into an annular portion by the receiving groove 22 and the first concave arc surface 92. The distal end of the tourniquet 43 is positioned near the bottom of the hook portion 21, and the vessel to be clamped is located within the annular portion (i.e., the annular portion surrounds the vessel to be clamped). Then, the actuation structure drives the firing structure to move distally to the firing termination position, causing the distal end of the firing structure to snap against the annular portion of the tourniquet 43, thereby clamping the vessel with the tourniquet 43. Finally, the actuating structure drives the firing structure and the feeding strip 7 to reset to the initial state. During the reset process, the actuating structure first drives the firing structure to move from the firing termination position to the firing initial position, and then the actuating structure drives the feeding strip 7 to move from the feeding termination position to the feeding initial position, so as to disengage the clamped blood vessel from the jaws formed by the hook portion 21.

[0063] In summary, this embodiment proposes a novel approach to clamping blood vessels using a tourniquet 41 in conjunction with a clamp arm 2 having a hook portion 21. The clamp arm 2, with its distal hook portion 21, effectively clamps the blood vessel. This design ensures the hook portion 21 easily catches the vessel to be clamped, and the vessel remains stably held within the jaws formed by the hook portion 21. During clamping, the vessel is less likely to slip out of the jaws, resulting in a stable and effective clamping process. Furthermore, the coordination of the first shaping rod 91, the tourniquet, and the clamp arm allows the distal end of the tourniquet 43 to stably form a ring around the blood vessel. The firing mechanism then snaps the ring together to clamp the vessel, ensuring stable clamping.

[0064] Furthermore, the magazine assembly proposed in this invention can control the clamping force applied to the blood vessel to be clamped by the firing mechanism and the hook portion of the clamp arm by controlling the stroke of the firing mechanism. This allows a single magazine assembly to be used to clamp blood vessels of varying diameters, eliminating the need for frequent changes of different hemostats depending on the diameter of the blood vessel. Specifically, the ability to clamp blood vessels of different diameters using a single magazine assembly is explained as follows: Larger blood vessels have thicker walls, while smaller blood vessels have thinner walls. To ensure stable clamping by the magazine assembly, the distance between the firing mechanism and the hook portion should be less than or equal to two times the thickness of the blood vessel wall. The magazine assembly proposed in this invention, by controlling the stroke of the firing mechanism, can adjust the distance between the firing mechanism and the hook portion to be less than or equal to two times the thickness of the blood vessel wall, thus controlling the clamping force applied to the blood vessel by the firing mechanism and the hook portion of the clamp arm, thereby making it suitable for clamping blood vessels of different diameters.

[0065] The adapter 8 includes an insertion channel 81 and a drive shaft 82 passing through the insertion channel 81.

[0066] The proximal end of the tube body 11 is inserted into the insertion channel 81, and the proximal end of the tube body 11 is connected to the insertion channel 81. The drive shaft 82 is located near the actuation structure, and the distal end of the drive shaft 82 is connected to the proximal end of the actuation structure to drive the actuation structure. In this embodiment, the proximal end of the tube body 11 and the insertion channel 81 are relatively stationary in the proximal-distal direction.

[0067] Preferably, when the feeding structure is located at the distal end of the feeding structure, the tourniquet 43 to be inserted is bent into a ring shape along the groove 22 of the receiving belt.

[0068] Preferably, such as Figure 3 As shown, when the feeding strip 7 is in the shaping position, the first shaping rod 91 moves to abut against the free end of the hook portion 21, and the first concave arc surface 92 connects with the bottom surface of the second end of the receiving groove 22. This arrangement facilitates a stable transition of the distal end of the tourniquet 43 to the first concave arc surface 92, where the tourniquet 43 is shaped and bent along the receiving groove 22.

[0069] Preferably, such as Figure 3 As shown, in this embodiment, the top of the conveyor belt 7 is provided with a groove 75 extending in the proximal direction. The bottom of the proximal end of the first shaping rod 91 has a columnar part 99 extending in the vertical direction as a linkage member. The columnar part 99 extends into the groove 75 from top to bottom. The distal end of the columnar part 99 abuts against the distal end wall of the groove 75. The first reset member 74 is located between the proximal end of the columnar part 99 and the proximal end wall of the groove 75.

[0070] Preferably, such as Figure 3 As shown, the receiving groove 22 includes a straight groove 23 extending along a straight line and an arc groove 24 extending along an arc. The first end of the straight groove 23 is used for the tourniquet 41 to enter, and the second end of the straight groove 23 is connected to the first end of the arc groove 24. The second end of the arc groove 24 is located at the free end of the hook portion 21, and the second end of the arc groove 24 has an opening facing the sleeve 12 for the tourniquet 43 to extend out of the receiving groove 22. The direction in which the tourniquet 43 extends out of the receiving groove 22 is parallel to the axial direction of the bandage compartment. This facilitates the engagement of the first shaping rod 91 with the free end of the hook portion 21, so that the distal end of the tourniquet 43 is shaped and bent by the receiving groove 22 and the first concave arc surface 92. In addition, it also facilitates the design of the first shaping rod 91.

[0071] More preferably, in this embodiment, the straight groove 23 extends in the same direction as the belt compartment axis, and the arc groove 24 extends along a semi-circular arc. This simplifies the shape of the arc groove 24 while facilitating the bending of the tourniquet 43 along the arc groove 24.

[0072] Furthermore, in this embodiment, the orientation of the hook portion 21 is consistent with the orientation of the arc-shaped groove 24.

[0073] More preferably, the arc along the first concave arc surface 92 and the arc along the bottom surface of the arc groove 24 belong to the same circle; when the feeding strip 7 is in the feeding termination position, the distal end of the first shaping rod 91 abuts against the free end of the hook portion 21, and the first concave arc surface 92 connects with the bottom surface of the arc groove 24. In this way, the distal end of the tourniquet 43 to be inserted is shaped and bent into a regular ring shape by the tourniquet groove 22 and the first concave arc surface 92, which better surrounds the blood vessel, thereby facilitating stable clamping of the blood vessel.

[0074] Furthermore, in this embodiment, the first shaping rod 91 includes a first straight rod 93 and a first arc rod 94 connected sequentially from near to far. The near end of the first straight rod 93 is fixedly connected to the feeding strip 7, and the bottom surface of the first arc rod 94 forms a first concave arc shape facing the lower part of the hook portion 21.

[0075] Preferably, such as Figure 3As shown, the tourniquet assembly also includes a second shaping rod 95. The proximal end of the second shaping rod 95 is fixedly installed inside the sleeve 12, and the distal end of the second shaping rod 95 extends beyond the sleeve 12. The second shaping rod 95 is located between the first shaping rod 91 and the clamp arm 2. The distal end of the second shaping rod 95 has a second concave arc surface 96 facing the upper part of the hook portion 21. When the tourniquet delivery piece 7 is in the shaping position, the arc along the first concave arc surface 92, the arc along the second concave arc surface 96, and the arc along the bottom surface of the arc groove 24 are all on the same circle. In this way, the distal end of the tourniquet to be inserted 43 can be easily shaped and bent into a ring shape by the tourniquet groove 22, the first concave arc surface 92, and the second concave arc surface 96, which further facilitates the encirclement of blood vessels and the stable clamping of blood vessels.

[0076] Furthermore, in this embodiment, the second shaping rod 95 includes a second straight rod 97 and a second arc-shaped rod 98 connected sequentially from near to far. The near end of the second straight rod 97 is fixedly installed inside the sleeve 12, and the top surface of the second arc-shaped rod 98 forms a second concave arc surface 96 facing the upper part of the hook portion 21.

[0077] Preferably, such as Figure 3 As shown, the proximal end of the firing rod 50 is inserted into the tube 11, and the distal end of the firing rod 50 passes through the sleeve 12; the proximal end of the clamp arm 2 is fixedly installed at the bottom of the sleeve 12. The first shaping rod 91, the firing rod 50, the tape feeder 7, the tape compartment structure, and the clamp arm 2 are arranged sequentially from top to bottom in the sleeve 12. The distal end of the firing rod 50 has a strip hole 53. The columnar part 99 of the first shaping rod 91 passes through the strip hole 53 and connects with the tape feeder 7; the second shaping rod 95 is located between the firing rod 50 and the clamp arm. Since the hook portion 21 of the clamp arm 2 cannot extend beyond the assumed cannula wall of the cannula 12, the design size of the hook portion 21 is increased by fixing the proximal end of the clamp arm 2 to the bottom of the cannula 12, thereby enabling the hook portion 21 to accommodate more diameter types of blood vessels to be clamped. By arranging the first shaping rod 91, firing rod 50, tape feeder 7, tape compartment structure, and clamp arm 2 sequentially from top to bottom inside the cannula 12, the structure is compact while simplifying the design of the first shaping rod 91. By opening a strip hole 53 at the distal end of the firing rod 50 for the columnar portion 99 of the first shaping rod 91 to pass through and be fixedly connected to the tape feeder 7, the firing structure does not interfere with the tape feeder 7 and the first shaping rod 91, which is conducive to the stable execution of the firing and tape feed actions.

[0078] More preferably, when the feed strip 7 is in the shaping position, the distal end of the columnar portion 99 abuts against the distal end wall of the strip hole 53. In this way, the stroke of the first shaping rod 91 is limited by the combined action of the distal end wall of the strip hole 53 and the free end of the hook portion 21, which is beneficial to the stable operation of the feed strip 7.

[0079] More preferably, the distal end of the firing lever 50 has a snapping head 51 for snapping the tourniquet loop, and the distal part of the snapping head 51 has a snapping surface 52 adapted to the bottom surface of the arc-shaped groove 24; during firing, the snapping head 51 moves distally into the arc-shaped groove 24.

[0080] More preferably, a feeding channel (not shown in the figure) is provided in the middle of the second shaping rod 95 in the left-right direction for the distal end of the feeding strip 7 to pass through. Since the distal end of the feeding strip 7 cooperates with the tourniquet 43 to be inserted, the distal end of the feeding strip 7 is prone to interference with the second shaping rod 95 during the feeding process of the tourniquet 43 to be inserted. By providing a feeding channel on the second shaping rod 95, interference between the distal end of the feeding strip 7 and the second shaping rod 95 can be avoided.

[0081] Preferably, such as Figure 3 As shown, the base plate of the clamping chamber is placed on the clamp arm 2, and the proximal end of the clamping groove 22 is located below the clamping chamber 42; the clamping groove 22 is located on the far side of the clamping chamber base plate, or the proximal end of the clamping groove 22 partially overlaps with the clamping chamber base plate; during the clamping of the blood vessel, when the clamping structure is in the initial position of the clamping end, the tourniquet 43 to be inserted is located in the clamping groove 22. The clamping structure moves distally, and the clamping plate 7 pushes the tourniquet 41 at the farthest end of the clamping chamber away from the clamping chamber base plate and sinks into the proximal end of the clamping groove 22. The clamping structure pushes the tourniquet 43 to be inserted along the clamping groove 22 distally. When the clamping structure is in the distal end termination position, the tourniquet 41 at the farthest end of the clamping chamber is completely inserted into the proximal end of the clamping groove 22. The distal end of the tourniquet 43 to be inserted is bent into a ring shape along the shape of the clamping groove 22, and the distal end of the tourniquet 43 to be inserted extends beyond the clamping groove 22. This facilitates the feeding and resetting processes of the band feeding structure, enabling continuous band feeding and simplifying the shape of the clamp arm 2, thus facilitating the insertion of the tourniquet 41 from the band chamber 42 into the band receiving groove 22. More preferably, in this embodiment, the band chamber 42 has a left side wall and a right side wall, and the band receiving groove 22 has a left side surface and a right side surface. The inner surface of the left side wall is coplanar with the left side surface, and the inner surface of the right side wall is coplanar with the right side surface.

[0082] In this embodiment, the tourniquet 43 to be inserted is pushed by the head of the delivery tape. To facilitate the pushing of the tourniquet 43 by the head of the delivery tape, preferably, a notch for receiving the head of the delivery tape is provided at the proximal end and / or distal end of the tourniquet. In this way, a space for receiving the head of the delivery tape is formed between adjacent tourniquets by the notch, which facilitates the pushing of the tourniquet 43 by the head of the delivery tape.

[0083] During the resetting process of the tape feeding structure, the tape feeding structure moves towards the proximal end of the tape compartment. The head of the tape feeding plate will drive all the tourniquets in the tape receiving groove 22, except for the tourniquet 43 to be inserted, to move towards the proximal end of the tape compartment. When the tourniquet at the closest end of the tape receiving groove 22 contacts the proximal end wall of the tape receiving groove 22, the proximal end wall will block all the tourniquets in the tape receiving groove 22, except for the tourniquet 43 to be inserted, from continuing to move towards the proximal end of the tape compartment. Because the head of the tape feeding plate is elastic, the head of the tape feeding plate will move past its adjacent tourniquet and stop at the notch, preparing for the next tape feeding and firing.

[0084] Preferably, an elastic guide plate (not shown in the figure) extending along the feeding direction and curving into the receiving groove 22 is provided at the distal end of the side wall of the tape compartment 42; during tape feeding, the tourniquet 41 enters the receiving groove 22 along the channel formed between the elastic guide plate and the bottom plate of the tape compartment. In this way, no matter what position the tape compartment assembly 1 is in, the tourniquet 41 can stably enter the receiving groove 22 during tape feeding, improving the stability of the tourniquet 41 entering the groove.

[0085] Preferably, the belt compartment 42 includes a top plate (not shown in the figure) located at the far end of the belt compartment 42, and the two sides of the top plate are respectively connected to the two side walls of the belt compartment 42; an elastic clamping plate is provided on the top plate of the belt compartment 42, which is raised along the belt feeding direction and towards the belt receiving groove 22, and the elastic clamping plate is located far from the elastic guide plate; during the belt feeding process, when the tourniquet 41 is fully inserted into the belt receiving groove 22, the tourniquet 41 is clamped by the elastic clamping plate. By providing the elastic clamping plate, the state of the tourniquet 41 that is fully inserted into the belt receiving groove 22 is stabilized, which is beneficial for the belt feeding plate 7 to push the tourniquet 41 to continue to advance steadily along the belt receiving groove 22, so that the tourniquet 41 bends along the shape of the belt receiving groove 22.

[0086] Specifically, the elastic clamping plate includes a connecting part and a clamping part. The plane of the connecting part is an inclined surface extending into the groove 22 of the tourniquet. The first end of the connecting part is connected to the top plate of the tourniquet compartment 42, and the second end of the connecting part is connected to the first end of the clamping part. The plane of the clamping part is parallel to the proximal bottom surface of the groove 22 of the tourniquet. As configured above, the clamping contact between the elastic clamping plate and the tourniquet 41 is increased, making the clamping stable. At the same time, the clamping time of the elastic clamping plate on the tourniquet 41 is increased, further ensuring the stability of the tourniquet 41 as it continues to advance along the groove 22 of the tourniquet.

[0087] Preferably, such as Figures 4 to 6As shown, a first mounting groove 26 is formed on the left side of the distal end of the receiving groove 22, running along the direction of the receiving groove 22. A second mounting groove 27 is formed on the right side of the receiving groove 22, corresponding to the position of the first mounting groove 26. A first retaining strip 28 is installed in the first mounting groove 26, with its first side extending into the first mounting groove 26 and its second side extending out of the first mounting groove 26. The first side of the first retaining strip 28 is connected to the bottom of the first mounting groove 26 by a second resetting member 30. A second retaining strip 29 is installed in the second mounting groove 27, with its first side extending into the second mounting groove 27 and its second side extending out of the second mounting groove 27. The first side of the second retaining strip 29 is connected to the bottom of the second mounting groove 26 by a second resetting member 30. The bottoms of the 7 are connected by a third reset member 31; the second side of the first clip 28 has a first guide surface 32 extending from the outside of the accommodating groove 22 into the accommodating groove 22, the first guide surface 32 is disposed facing outward from the accommodating groove 22, the first guide surface 32 extends from the first end of the first clip 28 to the second end of the first clip 28; the second side of the second clip 29 has a second guide surface 33 extending from the outside of the accommodating groove 22 into the accommodating groove 22, the second guide surface 33 is disposed facing outward from the accommodating groove 22, the second guide surface 33 extends from the first end of the second clip 29 to the second end of the second clip 29; a feeding channel for the tourniquet 41 is formed between the bottom of the first clip 28 and the accommodating groove 22, and between the second clip 29 and the bottom of the accommodating groove 22.

[0088] In this embodiment, the first reset member 74, the second reset member 30, and the third reset member 31 can be tension springs, compression springs, rubber parts, etc.

[0089] This design prevents the tourniquet 41 from detaching from the receiving groove 22 during delivery, ensuring stable delivery. It also facilitates the stable bending of the distal end of the tourniquet 41 along the shape of the receiving groove 22 to the annular portion. Furthermore, during the engagement of the distal end of the firing structure with the annular portion of the tourniquet 41, the force applied by the firing structure acts on the first guide surface 32 and the second guide surface 33 through the tourniquet 41. The second reset member 30 and the third reset member 31 yield, causing the first locking strip 28 and the second locking strip 29 to retract into the first mounting groove 26 and the second mounting groove 27, respectively. At this point, due to the relatively large thickness of the clamped assembly consisting of the clamped tourniquet 41 and the clamped blood vessel, the two sides of the clamped assembly will respectively abut against the first locking strip 28 and the second locking strip 29, restricting the first locking strip 28 from extending from the first mounting groove 26 and the second locking strip 29 from extending from the second mounting groove 27. Therefore, after the firing structure resets, the clamped assembly can be easily released from the receiving groove 22.

[0090] More preferably, such as Figure 4As shown, the first end of the feeding channel is located on the straight groove 23, and the second end is located on the arc-shaped groove 24. During the feeding of the tourniquet 41 along the receiving groove 22, the distal end of the tourniquet 41 enters the feeding channel, while the proximal end of the tourniquet 41 is pressed by an elastic clamping plate. This further improves the feeding stability of the tourniquet 41 within the receiving groove 22 and prevents the mechanism from jamming.

[0091] More preferably, the second side of the first locking strip 28 also has a third guide surface 34 extending from inside the accommodating groove 22 to outside the accommodating groove 22, the third guide surface 34 being disposed towards the inside of the accommodating groove 22, and extending from the first end of the first locking strip 28 to the second end of the first locking strip 28; the second side of the second locking strip 29 also has a fourth guide surface 35 extending from inside the accommodating groove 22 to outside the accommodating groove 22, the fourth guide surface 35 being disposed towards the inside of the accommodating groove 22, and extending from the first end of the second locking strip 29 to the second end of the second locking strip 29. By providing the third guide surface 34 and the fourth guide surface 35, it is further beneficial to release the entire clamped strip from the accommodating groove 22.

[0092] It should be noted that the number of first mounting slots 26 can be one or more, and correspondingly, the number of first clips 28 can be one or more; the number of second mounting slots 27 can be one or more, and correspondingly, the number of second clips 29 can be one or more.

[0093] A tourniquet chamber 42 for holding a series of tourniquets 41 includes a chamber base plate and first and second sidewalls extending vertically upward from both sides of the chamber base plate. The left side portion of the tourniquet 41 substantially conforms to the first sidewall of the chamber 42, and the right side portion of the tourniquet 41 substantially conforms to the second sidewall of the chamber 42. In use, the chamber 42 is suitable for holding one or more of the aforementioned tourniquets 41.

[0094] The belt feeder 7 includes the transmission component 6 and the belt feeder 7. For example... Figure 2 As shown, the transmission member 6 is located inside the belt compartment 42 and is placed near the end tourniquet 41. That is, the distal end of the transmission member 6 can abut against the tail of the end tourniquet 41 when needed to push the end tourniquet 41, thereby pushing the other tourniquets 41 except the tourniquet 43 to be inserted to move to the distal end.

[0095] The transmission component 6 may have different structures and may use different other technologies to drive the tourniquet 41 to move distally to the tourniquet chamber 42, as in this exemplary embodiment, such as Figure 7As shown, the transmission member 6 is a generally strip-shaped sheet structure with a distal end and a proximal end. The width of this sheet structure should be less than the width between the first and second sidewalls of the belt compartment 42, so that the transmission member 6 can move in the proximal direction inside the belt compartment 42. Preferably, the width of the transmission member 6 is approximately equal to the width between the first and second sidewalls of the belt compartment 42, so that there is a certain friction between the transmission member 6 and the first and / or second sidewalls of the belt compartment 42. When the transmission member 6 does not need to move, the friction between the transmission member 6 and the inner wall of the belt compartment 42 can keep the transmission member 6 stationary to a certain extent. When the belt feeding plate 7 pushes the tourniquet 43 to be inserted into the curved part of the belt receiving groove 22, the transmission member 6 can overcome the friction between itself and the inner wall of the belt compartment 42 and slide, and during the sliding process, there will be no unwanted movement in any direction other than the proximal direction, which helps to maintain the stability of the belt feeding.

[0096] Furthermore, the transmission member 6 is provided with a structure that facilitates its movement distally within the belt compartment 42 and prevents it from moving proximally. This structure ensures the proper pushing and positioning of the tourniquet 41 within the belt compartment 42, allowing the transmission member 6 to move only a predetermined distance distally during each push. In this embodiment, the transmission member 6 includes a first transmission structure capable of forming a unidirectional transmission connection with the feed strip 7, such that when the feed strip 7 moves distally towards the belt compartment 42, the transmission member 6 moves synchronously distally through the engagement of this first transmission structure.

[0097] The first transmission structure can be Figure 7 An example is shown of an elastic pusher 61 formed on the transmission member 6. In its natural state (i.e., when the transmission member 6 is removed from the belt compartment 42), the elastic pusher 61 is preferably a pre-formed, elongated cantilever structure. This cantilever structure curves upwards from the distal end of the transmission member 6 towards the proximal end and upwards, forming an angle with the transmission member 6. Simultaneously, the free end of the cantilever structure abuts against the first raised end 62 of the belt feeder 7. A second transmission structure is simultaneously formed on the belt feeder 7, forming a unidirectional transmission connection with the elastic pusher 61, particularly with the first raised end 62 of the elastic pusher 61. This second transmission structure is... Figure 3The exemplary illustration shows several one-way push grooves 71 formed at the bottom of the feed strip 7, which are used to engage with the elastic pusher 61 disposed on the transmission member 6. The number of one-way push grooves 71 is variable. The one-way push grooves 71 are preferably arranged at equal intervals to ensure that they can be engaged by the feed strip 7 and push the transmission member 6 each time the feed strip 7 is pushed. Preferably, the proximal wall of the unidirectional push groove 71 is a pushing wall 72, and the distal wall of the unidirectional push groove 71 is an inclined wall 73 that slopes towards the distal end. The elastic pusher 61 is located in one of the multiple unidirectional push grooves 71 in its natural state. When the conveyor belt 7 moves towards the distal end of the belt compartment 42, the proximal wall of the unidirectional push groove 71 and the elastic pusher 61 form a co-directional pushing transmission. That is, the first raised end 62 of the elastic pusher 61 engages in one of the unidirectional push grooves 71 and abuts against the proximal wall in the engaged unidirectional push groove 71. Then, when the conveyor belt 7 moves towards the distal end, the transmission member 6 moves towards the distal end synchronously due to the abutment between the raised end and the proximal wall. After the feeding strip 7 completes one feeding into the curved part of the belt groove 22, when it moves to the near end of the belt compartment 42 to reset, the first raised end 62 of the elastic pusher 61 disengages from the state of abutting against the near end wall and slides along the far end wall of the one-way push groove 71 until the two disengage and enter the next one-way push groove 71.

[0098] Preferably, the chute 75 is located on the far side of the farthest unidirectional push groove 71. This improves the structural strength of the feed strip 7.

[0099] As described above, the transmission member 6 also includes a first stop structure formed thereon for preventing the transmission member 6 from moving towards the proximal end of the belt cartridge 42. This first stop structure may be a resilient stop 63, such as... Figure 7 As exemplarily shown, the elastic stop 63 is a stop spring disposed on the transmission member 6. Preferably, the stop spring protrudes from at least one side of the transmission member 6 in the left-right direction toward the top of the belt compartment 42. Preferably, the elastic stop 63 is disposed entirely protruding from the upper surface of the transmission member 6, and its height may exceed the top of the belt compartment 42 to ensure that the second protruding end 64 of the elastic stop 63 toward at least one side of the top of the belt compartment 42 can accurately engage with at least one side of the top of the belt compartment 42, so that the transmission member 6 does not move toward the proximal end when the feed strip 7 moves toward the proximal end of the belt compartment 42 to reset. At the same time, although the height of the elastic stop 63 exceeds the top of the belt compartment 42, it should be understood that the height of the elastic stop 63 is set so that the elastic stop 63 will not interfere with the movement of the feed strip 7 located at the top of the belt compartment 42, ensuring that the feed strip 7 can be stably pushed toward the distal end of the belt compartment 42 and reset toward the proximal end of the belt compartment 42.

[0100] In this embodiment, the elastic stop 63 is preferably as follows: Figure 7As shown, the transmission member 6 includes a horizontal portion 65 and an inclined portion 66 located on the same horizontal plane and angled to each other. The horizontal portion 65 is located further away from the inclined portion 66, and extends parallel to the axis of the belt cartridge 42 in the near-far direction, located in the middle of the left-right direction of the transmission member 6. The fixed end 67 of the horizontal portion 65 is connected to the distal end of the elastic stop 63 of the transmission member 6. The other end of the horizontal portion 65 is connected to one end of the inclined portion 66. The inclined portion 66 extends / curves upward from the connected end toward at least one side of the top of the belt cartridge 42 to form a second curved end 64, that is, the inclined portion 66 extends / curves to the left and / or right from the connected end. In use, the angle between the horizontal portion 65 and the inclined portion 66 is formed to allow the transmission member 6 to move distally within the belt cartridge 42. The fixed end 67 is as follows: Figure 7 As exemplarily shown, it is roughly T-shaped to increase the connection strength with the transmission component 6, ensuring that the elastic stop 63 is stably and protruding on the upper part of the transmission component 6, and can form an effective stop engagement with the second stop structure on the belt compartment 42 to prevent the transmission component 6 from moving undesirably toward the proximal end.

[0101] Preferably, at the top of one of the side walls of the belt compartment 42, a side top wall 44 extends perpendicularly to the side wall and is substantially parallel to the bottom plate of the belt compartment. The side top wall 44 and the elastic stop 63 of the transmission member 6 are approximately on the same horizontal plane. More preferably, the height of the elastic stop 63 can be slightly higher than the side top wall 44 to ensure that the elastic stop 63 engages with the second stop structure provided on the side top wall 44, thereby preventing the transmission member 6 from moving undesirably toward the proximal end of the belt compartment 42. The second stop structure provided on the side top wall 44 of the belt compartment 42 can have different structures. In this embodiment, one example of a second stop structure is a one-way stop groove 45; such as... Figure 8As shown, the open slot of the one-way stop groove 45 is horizontally oriented towards the middle part of the top of the belt compartment 42 in the left-right direction, so as to facilitate the elastic stop 63, which is integrally protruding from the transmission member 6, to rise horizontally towards the top wall 44 of the belt compartment 42 from the middle of the transmission member 6 and enter the one-way stop groove 45. Among them, the proximal wall of the one-way stop groove 45 is a stop wall 46, and the distal wall is a sliding wall 47 suitable for the elastic stop 63 to slide in the distal direction into the next one-way stop groove 45. In its natural state, the elastic stop 63 is located in a one-way stop groove 45. During the process of the feed strip 7 moving towards the far end of the belt bin 42, due to the one-way transmission connection between the transmission member 6 and the feed strip 7, the transmission member 6 will move towards the far end with the feed strip 7. At this time, the sliding wall 47 forms a bias pressure on the second raised end 64 of the elastic stop 63. As the transmission member 6 moves further towards the far end, the second raised end 64 will slide away from the original one-way stop groove 45 and enter the next one-way stop groove 45 and engage with it. When the feed strip 7 moves towards the near end of the belt bin 42, the stop wall 46 of the one-way stop groove 45 forms an abutment stop with the second raised end 64 of the elastic stop 63 to prevent the transmission member 6 from sliding towards the near end of the belt bin 42.

[0102] It should be noted that the tourniquet involved in this embodiment has shape retention capability. Specifically, the tourniquet can be shaped into a ring structure along an arcuate surface in the length direction. The ring structure can be pressed and bent along its width direction to form a bent structure. The bent structure includes a bent portion and a first clamping arm and a second clamping arm distributed on both sides of the bent portion. The two clamping arms are arc-shaped and protrude in the same direction. The bent structure is elastic and can maintain its shape when no force is applied. Thus, the formed bent structure can stably clamp the blood vessel to be clamped due to shape retention. In addition, the tourniquet involved in this embodiment is made of a bioabsorbable material. To meet the requirements of tourniquet shape retention capability and bioabsorbability, magnesium-aluminum alloys or similar materials can be used to prepare the tourniquet.

[0103] Example 2

[0104] This embodiment uses the driving method of the hemostat from Embodiment 1, including a feeding step, a firing step, and a resetting step.

[0105] The feeding step includes:

[0106] S11. After the blood vessel to be clamped is hooked at the hook of the clamp arm, the delivery tape starts from the initial delivery position and the first shaping rod starts from the initial shaping rod position, and they move together to the distance. The delivery tape pushes all the tourniquets in the bandage compartment structure to move to the distance. The tourniquet to be inserted is pushed into the bandage groove and continues to move along the bandage groove until the delivery tape moves to the shaping position. The first shaping rod moves to the shaping rod termination position. At this time, the distal end of the tourniquet to be inserted is accommodated in the bandage groove. The first shaping rod moves to the free end of the hook.

[0107] S12. The delivery plate continues to move distally from the initial position, pushing the tourniquet to be inserted along the groove of the delivery plate. During this movement, the distal end of the tourniquet is bent sequentially along the groove and the first concave arc surface until the delivery plate reaches the delivery termination position. At this point, the distal end of the tourniquet is bent into a loop shape by the groove and the first concave arc surface, with the distal end of the tourniquet positioned near the bottom of the hook. This allows the loop to surround the vessel to be clamped.

[0108] The firing steps include:

[0109] S2. The firing mechanism moves distally to the firing termination position, causing the distal end of the firing mechanism to snap against the loop of the tourniquet to be inserted. In this way, the tourniquet to be inserted clamps the blood vessel.

[0110] The reset steps include:

[0111] S3. The firing mechanism moves proximally from the firing termination position to the firing initiation position. Then, the tape feeder moves from the tape feed termination position to the shaping position. Afterward, starting from the shaping position, the tape feeder and the first shaping rod move proximally together until the tape feeder and the first shaping rod reach their respective initial positions. This resets the firing and tape feeders, simultaneously disengaging the clamped blood vessel from the jaws formed by the hook portion.

[0112] In summary, the driving method of the hemostat proposed in this embodiment enables the blood vessel to be clamped to be stably held within the jaws formed by the hook during the clamping process, making it less likely for the blood vessel to slip out of the jaws during the clamping process, thus making the blood vessel clamping process stable and effective.

[0113] Example 3

[0114] The main difference between this embodiment and Embodiment 1 is:

[0115] The tourniquet 43 extends downward toward the diaphragm recess 22. This design also facilitates the engagement of the free end of the first shaping rod with the hook portion 21, so that the distal end of the tourniquet 43 is shaped and bent by the diaphragm recess 22 and the first concave arc surface 92. In addition, it also facilitates the design of the first shaping rod.

[0116] Accordingly, in this embodiment, the straight groove extends in the same direction as the belt compartment axis, and the arc-shaped groove extends along an arc greater than a semicircle. This simplifies the shape of the arc-shaped groove while facilitating the bending of the tourniquet 43 along the arc-shaped groove.

[0117] The remaining similarities to those in Example 1 will not be repeated here.

[0118] Example 4

[0119] The main difference between this embodiment and Embodiment 1 is:

[0120] The tourniquet 43 extends upward toward the diaphragm recess 22. This design also facilitates the engagement of the free end of the first shaping rod with the hook portion 21, so that the distal end of the tourniquet 43 is shaped and bent by the diaphragm recess 22 and the first concave arc surface 92.

[0121] Accordingly, in this embodiment, the straight groove extends in the same direction as the belt compartment axis, and the arc-shaped groove extends along an arc line smaller than a semicircle. This simplifies the shape of the arc-shaped groove while facilitating the bending of the tourniquet 43 along the arc-shaped groove.

[0122] The remaining similarities to those in Example 1 will not be repeated here.

[0123] Example 5

[0124] The main difference between this embodiment and Embodiment 1 is:

[0125] The firing mechanism includes a firing rod, the proximal end of which is inserted into the tube 11, and the distal end of which is inserted into the sleeve 12. The proximal end of the clamp arm 2 is fixedly installed at the bottom of the sleeve 12. The firing rod, the tape feed plate 7, the tape magazine structure, and the clamp arm 2 are arranged sequentially from top to bottom inside the sleeve 12. The first shaping rod is located between the firing rod and the tape magazine structure. The distal end of the first shaping rod has a strip-shaped hole, and the striking head of the firing rod is set downward through the strip-shaped hole. The second shaping rod is located between the firing rod and the clamp arm. Since the hook portion 21 of the clamp arm 2 cannot extend beyond the assumed cannula wall of the cannula 12, the design size of the hook portion 21 is increased by fixing the proximal end of the clamp arm 2 to the bottom of the cannula 12, thereby enabling the hook portion 21 to accommodate more diameter types of blood vessels to be clamped. By arranging the firing rod, the first shaping rod, the tape feeder 7, the tape compartment structure, and the clamp arm 2 sequentially from top to bottom inside the cannula 12, the structure is compact, the design of the firing rod is simplified, and the connection between the first shaping rod and the tape feeder 7 is facilitated. By opening a strip-shaped hole at the distal end of the first shaping rod for the snapping head to pass through, the firing structure does not interfere with the tape feeder 7 and the first shaping rod, which is conducive to the stable execution of the firing and tape feed actions.

[0126] The remaining similarities to those in Example 1 will not be repeated here.

[0127] Example 6

[0128] The main difference between this embodiment and Embodiment 1 is:

[0129] The tourniquet base plate is placed on the clamp arm 2. The tourniquet receiving groove 22 is located on the far side of the tourniquet base plate. The proximal bottom surface of the tourniquet receiving groove 22 is coplanar with the tourniquet base plate. The proximal end of the tourniquet receiving groove 22 is provided with an opening facing the tourniquet. The tourniquet delivery piece 7 pushes the tourniquet away from the tourniquet base plate and into the tourniquet receiving groove 22 through the opening. In this way, it is convenient to deliver the tourniquet from the tourniquet to the tourniquet receiving groove 22.

[0130] Furthermore, in this embodiment, the belt compartment and the belt-receiving groove 22 are arranged close to each other, the inner side of the left side wall of the belt compartment is coplanar with the left side of the belt-receiving groove 22, and the inner side of the right side wall of the belt compartment is coplanar with the right side of the belt-receiving groove 22.

[0131] Preferably, both the first mounting groove 26 and the second mounting groove 27 extend from the first end of the accommodating groove 22 to the second end of the accommodating groove 22. This allows the tourniquet to enter the delivery channel simultaneously with leaving the tourniquet chamber, resulting in more stable delivery and eliminating the need for elastic guide plates and elastic clamping plates.

[0132] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A tape bin assembly, characterized in that: It includes a tape bin structure, a tape feeding piece, a firing rod, a first shaping rod, a clamp arm and a sleeve; The belt bin structure includes at least one strip tourniquet and a belt bin for accommodating at least one strip tourniquet, wherein at least one tourniquet is sequentially arranged in a distal direction and stored inside the belt bin; the belt bin is fixedly accommodated in the sleeve; The proximal end of the clamp arm is fixedly installed in the sleeve, and the distal end of the clamp arm has a hook portion extending out of the sleeve. The clamp arm is provided with a belt receiving groove, and the first end of the belt receiving groove is located in the sleeve and communicates with the inner space of the belt bin to form a belt feeding channel, and the second end of the belt receiving groove is located inside the hook portion and is bent along the shape of the hook portion. The distal end of the belt feeding piece is inserted into the sleeve, and the belt feeding piece cooperates with the tourniquet; the firing rod is inserted into the sleeve, and the firing rod cooperates with the hook portion; The proximal end of the first shaping rod is inserted into the sleeve, the proximal end of the first shaping rod has a linkage member, a first reset member is arranged on the proximal side of the linkage member, the first reset member is located between the tape feeding piece and the linkage member, the distal end of the linkage member abuts against the tape feeding piece, and the distal end of the first shaping rod has a first concave arc surface facing the lower part of the hook portion; During the process of clamping the blood vessel, the tourniquet located at the farthest end of the belt feeding channel is the tourniquet to be inserted into the clamp. When the belt feeding piece is located at the initial position of the belt feeding, the first shaping rod is located at the initial position of the shaping rod, and the first reset member provides a pre-tightening force between the belt feeding piece and the linkage member; the belt feeding piece moves far away, pushing all the tourniquets in the belt feeding channel to move far away, and when the belt feeding piece is located at the shaping position, the first shaping rod moves to the shaping rod termination position, and the first shaping rod moves to the free end portion close to the curved hook portion, and when the belt feeding piece is located at the belt feeding termination position, the distal end of the tourniquet to be inserted into the clamp extends out of the belt containing groove, and the distal end of the tourniquet to be inserted into the clamp is formed and bent into an annular portion by the belt containing groove and the first concave arc surface; the firing rod moves far away, and closes the annular portion of the tourniquet to be inserted into the clamp.

2. The tape bin assembly according to claim 1, characterized in that: When the tape feeding piece is located at the shaping position, the first shaping rod moves to abut against the free end of the hook portion, and the first concave arc surface is connected to the second end bottom surface of the tape containing groove.

3. The tape bin assembly according to claim 1, characterized in that: The top of the belt feeding piece is provided with a slide groove extending in the far-near direction, and the bottom of the proximal end of the first shaping rod is provided with a columnar portion extending in the up-down direction as a linkage member; The columnar portion extends into the slide groove from top to bottom, the distal end of the columnar portion abuts against the distal end wall of the slide groove, and the first reset member is located between the proximal end of the columnar portion and the proximal end wall of the slide groove.

4. The tape bin assembly according to claim 1, characterized in that: The belt-containing groove includes a straight groove extending along a straight line and an arcuate groove extending along an arc line, the first end of the straight groove is used for the tourniquet to enter, the second end of the straight groove is connected to the first end of the arcuate groove, the second end of the arcuate groove is located at the free end of the hook portion, and the second end of the arcuate groove is provided with an opening toward the sleeve for the tourniquet to be inserted into the forceps and extend out of the belt-containing groove; The extension direction of the straight groove is the same as the axial direction of the belt bin, and the arc groove is an arc groove extending along a circular arc.

5. The tape bin assembly according to claim 4, characterized in that: The arc line along which the first concave arc surface is formed belongs to the same circle as the arc line along which the bottom surface of the arc-shaped groove is formed; When the belt feeding piece is located at the shaping position, the distal end of the first shaping rod abuts against the free end of the hook portion, and the first concave arc surface is connected to the bottom surface of the arc groove.

6. The tape bin assembly according to claim 4, characterized in that: The belt bin assembly also includes a second shaping rod, the proximal end of the second shaping rod is fixedly installed in the sleeve, the distal end of the second shaping rod extends out of the sleeve, the second shaping rod is located between the first shaping rod and the clamp arm, and the distal end of the second shaping rod has a second concave arc surface facing the upper part of the hook portion; When the belt feeding piece is located at the shaping position, the arc line along which the first concave arc surface is located, the arc line along which the second concave arc surface is located, and the arc line along which the bottom surface of the arc groove is located are located on the same circle.

7. The tape bin assembly according to claim 3, characterized in that: The proximal end of the clamp arm is fixedly installed on the bottom of the sleeve, and the first shaping rod, the firing rod, the belt feeding piece, the belt bin structure and the clamp arm are arranged in sequence from top to bottom in the sleeve. A strip hole is opened at the distal end of the firing rod, and the columnar part passes through the strip hole to be connected with the belt feeding piece.

8. The tape bin assembly according to claim 7, characterized in that: When the tape feeding piece is located at the shaping position, the distal end of the columnar portion abuts against the distal end wall of the strip hole.

9. A hemostatic forceps, characterized in that: A belt bin assembly as claimed in any one of claims 1 to 8.

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