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

Abstract

The present invention proposes a tape bin assembly, comprising a tape bin structure, a tape feeding piece, a firing rod, a first shaping rod, a clamp arm and a sleeve; the tape bin structure comprises at least one strip tourniquet and a tape bin for accommodating at least one strip tourniquet, at least one tourniquet comprising a waiting-to-enter slot tourniquet located at the farthest end of the tape bin; the tape 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 tape feeding slot with a proximal end located in the sleeve and a distal end located inside the hook portion; the distal end of the tape feeding piece is inserted into the sleeve to cooperate with the tourniquet; the proximal end of the first shaping rod is inserted into the sleeve to be fixedly connected with 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; the firing rod is inserted into the sleeve to cooperate with the hook portion. The tape bin assembly thus arranged can achieve blood vessel clamping, and the blood vessel can be stably kept in the jaws formed by the hook portion during the clamping process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bin assembly, a hemostatic forceps and a driving method of the hemostatic forceps. Background Art

[0002] In order to fully expose the surgical field during surgery, it is necessary to ligate the blood vessels around the target tissue to stop bleeding. Hemostasis technology has become one of the core basic surgical operation techniques. Surgical operations on any part of the human body almost without exception involve bleeding and hemostasis, and hemostatic forceps and ligature clips are generally used to close and stop bleeding.

[0003] During a surgical operation, doctors use hemostatic forceps to ligate blood vessels around target tissues. Doctors usually place the blood vessels to be clamped in the jaws formed by two clamp arms, with a V-shaped ligation clamp pre-placed in the jaws, and then close the two clamp arms to clamp the blood vessels. However, during the clamping process of existing hemostatic forceps, the blood vessels are prone to slipping in the jaws, resulting in improper hemostasis. In addition, due to the different diameters of the blood vessels to be clamped, the V-shaped ligation clamps often require the design of multiple sizes to accommodate, which is cumbersome to operate. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the above technology, the present invention solves them at least to a certain extent. To this end, one object of the present invention is to provide a cartridge assembly that can clamp a blood vessel, and during the clamping process, the blood vessel can be stably kept in the jaws formed by the hook portion.

[0006] The second object of the present invention is to provide a hemostatic forceps having the above-mentioned cartridge assembly.

[0007] The third object of the present invention is to provide a driving method of the above-mentioned hemostatic forceps.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention include:

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

[0011] 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;

[0012] 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, which extends out of the sleeve. The clamp arm is provided with a belt feeding groove, and the proximal end of the belt feeding groove is located in the sleeve and communicates with the inner space of the belt bin to form a belt feeding channel, and the distal end of the belt feeding groove is located inside the hook portion and is bent along the shape of the hook portion.

[0013] The distal end of the belt feeding piece is inserted into the sleeve, and the belt feeding piece cooperates with the tourniquet; the proximal end of the first shaping rod is inserted into the sleeve, and the proximal end of the first shaping rod is fixedly connected with the belt 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 firing rod is inserted into the sleeve, and the firing rod cooperates with the hook portion;

[0014] The belt feeding piece and the first shaping rod move together among the belt feeding initial position, shaping position and belt feeding termination position arranged from near to far; 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 groove, and the belt feeding piece moves far from the belt feeding initial position, pushing all the tourniquets in the belt feeding channel to move far; when the belt feeding piece is at the shaping position, the tourniquet to be inserted into the groove moves along the belt feeding groove until the distal end of the tourniquet to be inserted into the groove extends out of the belt feeding groove, and the first concave arc surface moves to abut against the distal end of the tourniquet to be inserted into the groove; when the belt feeding piece is at the belt feeding termination position, the distal end of the tourniquet to be inserted into the groove is formed and bent into a ring-shaped portion by the belt feeding groove and the first concave arc surface;

[0015] The firing rod moves far away to close the ring-shaped portion of the tourniquet to be inserted into the groove.

[0016] Optionally, the belt feeding 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 groove to extend out of the belt feeding groove;

[0017] The direction in which the tourniquet to be inserted into the slot extends out of the belt feeding slot is parallel to the axial direction of the belt bin, or the direction in which the tourniquet to be inserted into the slot extends out of the belt feeding slot is downward toward the belt bin.

[0018] Optionally, the extension direction of the straight groove is the same as the axial direction of the belt warehouse, and the arc groove is an arc groove extending along a semicircular arc; or, the extension direction of the straight groove is the same as the axial direction of the belt warehouse, and the arc groove is an arc groove extending along an arc larger than a semicircle.

[0019] Optionally, the arc line along the first concave arc surface and the arc line along the bottom surface of the arc groove belong to the same circle; when the belt feeding piece is at the belt feeding termination 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.

[0020] Optionally, 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 belt feeding terminal position, the distal end of the tourniquet to be inserted into the groove is bent into a circular ring portion by the belt feeding groove, the first concave arc surface and the second concave arc surface.

[0021] Optionally, when the tape feeding piece is located at the tape feeding termination position, the arc line along which the first concave arc surface is formed, the arc line along which the second concave arc surface is formed, and the arc line along which the bottom surface of the arc groove is formed are located on the same circle.

[0022] Optionally, the distal end of the firing rod has a snapping head for snapping the looped portion of the tourniquet, and the distal portion of the snapping head has a snapping surface adapted to the bottom surface of the arc-shaped groove; during the firing process, the snapping head moves distally into the arc-shaped groove.

[0023] Optionally, the proximal end of the clamp arm is fixedly mounted on the bottom of the sleeve, and the first shaping rod, the firing rod, the tape feeding plate, the tape magazine structure and the clamp arm are arranged in sequence from top to bottom in the sleeve. A strip hole is provided at the distal end of the firing rod, and the proximal end of the first shaping rod has a columnar portion extending in the up and down directions, and the columnar portion passes through the strip hole and is fixedly connected to the tape feeding plate.

[0024] In a second aspect, the present invention provides a hemostatic forceps having the cartridge assembly as described above.

[0025] In a third aspect, the present invention provides a method for driving the hemostatic forceps as described above, comprising the following steps:

[0026] S1. After the hook portion of the clamp arm hooks the blood vessel to be clamped, the belt feeding piece and the first shaping rod move far away from the initial belt feeding position, and the belt feeding piece pushes all the tourniquets in the belt bin structure to move far away, wherein the tourniquet to be entered into the groove is pushed into the belt feeding groove and continues to move along the belt feeding groove until the belt feeding piece and the first shaping rod move to the shaping position together, at which time the tourniquet to be entered into the groove moves along the belt feeding groove until the distal end of the tourniquet to be entered into the groove extends out of the belt feeding groove, and the first concave arc surface of the first shaping rod moves to abut against the distal end of the tourniquet to be entered into the groove;

[0027] S2, the belt feeding piece and the first shaping rod continue to move together from the shaping position to the far side, the belt feeding piece pushes the tourniquet to be inserted into the groove to continue to move forward along the belt feeding groove, and at the same time, the distal end of the tourniquet to be inserted into the groove is shaped and bent along the first concave arc surface, until the belt feeding piece and the first shaping rod move together to the belt feeding end position, at which time the distal end of the tourniquet to be inserted into the groove is shaped and bent into a ring-shaped portion by the belt feeding groove and the first concave arc surface;

[0028] S3, the firing structure moves far to the firing end position, and the distal end of the firing structure snaps onto the ring-shaped portion of the tourniquet to be inserted into the groove;

[0029] S4, the firing structure moves from the firing end position to the firing initial position, and then the tape feeding piece and the first shaping rod move together from the tape feeding end position to the tape feeding initial position.

[0030] (III) Beneficial effects

[0031] The beneficial effects of the present invention are:

[0032] The present invention proposes a new idea of ​​using a tourniquet in combination with a clamp arm with a hook portion to clamp a blood vessel. The clamp arm with a hook portion at the distal end is used to clamp the blood vessel. On the one hand, the hook portion can easily hook the blood vessel to be clamped, and on the other hand, the blood vessel to be clamped can be stably kept in the jaws formed by the hook portion. During the clamping process, the blood vessel to be clamped is not easy to slip out of the jaws, making the blood vessel clamping process stable and effective. Through the cooperation of the first shaping rod, the tourniquet and the clamp arm, the distal end of the tourniquet to be inserted into the groove can stably form a ring-shaped portion to surround the blood vessel, and then the firing structure can snap the ring-shaped portion to clamp the blood vessel, and the clamping is stable. Ring-shaped portion

[0033] In addition, the magazine assembly proposed in the present 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 portion of the clamp arm, so that one magazine assembly can be used to clamp blood vessels of different thicknesses, without the need to frequently replace different models of hemostatic forceps according to the different diameters of the blood vessels to be clamped. Specifically, with the help of a cartridge assembly, it is suitable for clamping blood vessels of different thicknesses, as explained below: the wall of a thick blood vessel is thicker, and the wall of a thin blood vessel is thinner. In order for the cartridge assembly to stably clamp the blood vessel, the distance between the firing structure and the hook portion should be less than or equal to the thickness of the two blood vessel walls of the blood vessel to be clamped, but the distance between the firing structure and the hook portion cannot be too less than the thickness of the two blood vessel walls of the blood vessel to be clamped. If it is too less, it will cause necrosis of the blood vessel wall tissue. The cartridge assembly proposed in the present invention can adjust the distance between the firing structure and the hook portion to be appropriately less than or equal to the thickness of the two blood vessel walls of the blood vessel to be clamped by controlling the stroke of the firing structure, that is, it can control the clamping force applied to the blood vessel to be clamped by the firing structure and the hook portion of the clamp arm, and thus can be suitable for clamping blood vessels of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is described with the aid of the following drawings:

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the hemostatic forceps provided in Example 1 of the present invention;

[0036] Figure 2 is a cross-sectional schematic diagram of the hemostatic forceps provided according to Example 1 of the present invention;

[0037] Figure 3 yes Figure 2 Enlarged diagram of the distal structure of the hemostatic forceps;

[0038] Figure 4 is a schematic diagram of the three-dimensional structure of a clamp arm provided according to Embodiment 1 of the present invention;

[0039] Figure 5 yes Figure 4 An enlarged schematic diagram of the distal end of the middle forceps arm;

[0040] Figure 6 is a rear view schematic diagram of the clamp arm provided in Example 1 of the present invention;

[0041] Figure 7 is a schematic structural diagram of a transmission member provided in Example 1 of the present invention;

[0042] Figure 8 It is a schematic diagram of the local structure of the belt bin provided in Example 1 of the present invention.

[0043] [Description of Reference Numerals]

[0044] 1: With bin assembly;

[0045] 11: Pipe body; 12: Casing;

[0046] 2: Clamp arm;

[0047] 21: hook portion; 22: tape feeding slot; 23: straight slot; 24: arc slot; 26: first mounting slot; 27: second mounting slot; 28: first clamping strip; 29: second clamping strip; 30: first reset member; 31: second reset member; 32: first guide surface; 33: second guide surface; 34: third guide surface; 35: fourth guide surface;

[0048] 41: tourniquet; 42: belt compartment; 43: tourniquet to be inserted into the slot; 44: side top wall; 45: one-way stop groove; 46: stop wall; 47: slide-out wall;

[0049] 50: firing rod; 51: snapping head; 52: snapping surface; 53: strip hole;

[0050] 6: Transmission parts;

[0051] 61: elastic push piece; 62: first tilted end; 63: elastic stopper; 64: second tilted end; 65: horizontal part; 66: inclined part; 67: fixed end;

[0052] 7: tape feeding piece;

[0053] 71: one-way push groove; 72: push wall; 73: inclined wall;

[0054] 8: Adapter;

[0055] 81: insertion channel; 82: driving shaft;

[0056] 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 portion. DETAILED DESCRIPTION

[0057] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. The "near" mentioned herein refers to the side close to the operator, and the "far" refers to the side close to the patient. The directional terms such as "upper", "lower", "front", "back", "left", and "right" mentioned herein are in the order of Figure 1 The orientation is used as a reference, where the direction from near to far is also the direction from back to front.

[0058] Example 1

[0059] like Figures 1 to 3 As shown, this embodiment provides a hemostatic forceps, which includes an adapter 8 and a cartridge assembly 1.

[0060] like Figures 1 to 3 As shown, the belt bin assembly 1 includes an actuator (the actuator and its working principle are prior art, for details, please refer to the Chinese patent with application date of October 25, 2019, publication date of April 27, 2021, and application number CN201911021573.1, which will not be repeated here), a belt bin structure, a belt feeding plate 7, a firing rod 50, a first shaping rod 91, a clamp arm 2, and a tube body 11 and a sleeve 12 arranged in sequence from near to far.

[0061] 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 end shell of the cartridge assembly 1, or a component inside the proximal end shell of the cartridge assembly 1. The tube body 11 itself can be an integral part or a split part. One of the functions of the tube body 11 is that its inner wall provides a limiting structure to limit the active position of the active part.

[0062] The actuator is accommodated in the tube body 11. The belt bin structure includes at least one strip tourniquet 41 and a belt bin 42 for accommodating at least one strip tourniquet 41. At least one tourniquet 41 is sequentially arranged in the far and near direction and stored in the internal waiting slot of the belt bin 42. The belt bin structure is accommodated in the sleeve 12, and the belt bin structure is fixedly connected to the sleeve 12. The proximal end of the clamp arm 2 is fixedly installed in the sleeve 12 and communicates with the inner space of the belt bin to form a belt feeding channel. The distal end of the clamp arm 2 has a hook portion 21, which extends out of the sleeve 12. The clamp arm 2 is provided with a belt feeding groove 22. The proximal end of the belt feeding groove 22 (i.e., the first end of the belt feeding groove 22) is located in the sleeve 12, and the distal end of the belt feeding groove 22 (i.e., the second end of the belt feeding groove 22) is located on the inner side of 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 belt feeding piece 7 is inserted into the sleeve 12, the belt feeding piece 7 cooperates with the tourniquet 41, the proximal end of the belt feeding piece 7 is inserted into the tube body 11, and the proximal end of the belt feeding piece 7 is connected to the actuator, so that the actuator drives the belt feeding piece 7 to move in the distal direction, and is used to push the tourniquet 41 in the belt feeding channel to move distally (when the actuator drives the belt feeding piece 7 to move distally), and to reset the belt feeding piece 7 to the initial state after pushing the tourniquet 41 (when the actuator drives the belt feeding piece 7 to move proximally). The proximal end of the first shaping rod 91 is inserted into the sleeve 12, and the proximal end of the first shaping rod 91 is fixedly connected to the belt feeding piece 7, and 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, and the actuator drives the belt feeding piece 7 and the first shaping rod 91 to move in the distal direction together. The belt feeding piece 7 can move among the belt feeding initial position, shaping position and belt feeding termination position arranged from near to far. During the blood vessel clamping process, the tourniquet at the farthest end of the belt feeding channel is the waiting groove tourniquet. When the belt feeding piece 7 is at the shaping position, the waiting groove tourniquet 43 moves along the belt feeding groove 22 until the distal end of the waiting groove tourniquet 43 extends out of the belt feeding groove 22, and the first concave arc surface 92 moves to abut against the distal end of the waiting groove tourniquet 43. When the belt feeding piece 7 is at the belt feeding termination position, the distal end of the waiting groove tourniquet 43 is formed and bent into a ring-shaped portion along the belt feeding groove 22 and the first concave arc surface 92, and the distal end of the waiting groove tourniquet 43 is arranged close to the bottom of the hook portion 21. The distal end of the firing structure is inserted into the sleeve, the distal end of the firing structure cooperates with the hook portion, the proximal end of the firing structure is inserted into the tube body 11, and the proximal end of the firing structure is connected to the actuator, so that after the tape feeding piece 7 completes the tape feeding, the actuator drives the firing structure to move in the distal direction, and is used for (when the actuator drives the firing structure to move distally) the firing structure to close the ring portion of the tourniquet 43 to be inserted into the groove, and is used for (when the actuator drives the firing structure to move proximally) resetting the firing structure after closing the tourniquet 41 to the initial state. Among them, the ring shape referred to in the present invention refers to any enclosing shape that can form a hollow, not just a circle shape.

[0063] In the tape bin assembly 1 configured in this way, in the initial state, the tape feed piece 7 is located at the tape feed initial position, and the firing structure is located at the firing initial position. The hook portion 21 of the clamp arm 2 in the tape bin assembly 1 is used to hook the blood vessel to be clamped, and then the actuator drives the tape feed piece 7 and the first shaping rod 91 to move far together. During the process of the tape feed piece 7 moving from the tape feed initial position to the shaping position, the tape feed piece 7 pushes all the tourniquets 41 in the tape feed channel to move far, and the tourniquet 43 to be pushed into the slot continues to move forward along the tape feed slot 22; when the tape feed piece 7 moves to the shaping position, the tourniquet 43 to be pushed into the slot moves along the tape feed slot 22 until the distal end of the tourniquet 43 to be pushed into the slot protrudes out of the tape feed slot 22, and the first concave arc surface 92 moves to the position where it is aligned with the tourniquet 41 to be pushed into the slot. The distal ends of the blood belt 43 are in contact with each other; during the movement of the belt feeding piece 7 from the shaping position to the belt feeding end position, the tourniquet 43 to be inserted into the groove continues to move along the belt feeding groove 22, and at the same time, the distal end of the tourniquet 43 to be inserted into the groove is shaped and bent along the first concave arc surface 92; when the belt feeding piece 7 moves to the belt feeding end position, the distal end of the tourniquet 43 to be inserted into the groove is shaped and bent into a ring-shaped portion by the belt feeding groove 22 and the first concave arc surface 92, and the distal end of the tourniquet 43 to be inserted into the groove is arranged near the bottom of the hook portion 21, and the blood vessel to be clamped is located within the ring-shaped portion (that is, the ring-shaped portion surrounds the blood vessel to be clamped). Afterwards, the actuator drives the firing structure to move far to the firing end position, so that the distal end of the firing structure snaps the ring-shaped portion of the tourniquet 43 to be inserted into the groove, so that the tourniquet 43 to be inserted into the groove clamps the blood vessel. Finally, the actuator drives the firing structure and the tape feeding piece 7 to reset to the initial state. During the reset process, the actuator first drives the firing structure to move from the firing end position to the firing initial position, and then the actuator drives the tape feeding piece 7 to move from the tape feeding end position to the tape feeding initial position to separate the clamped blood vessel from the jaws formed by the hook portion 21.

[0064] In summary, this embodiment proposes a new idea of ​​using a tourniquet 41 in combination with a clamp arm 2 having a hook portion 21 to clamp a blood vessel. Among them, the clamp arm 2 having a hook portion 21 at the distal end is used to clamp the blood vessel. On the one hand, the hook portion 21 is easy to hook the blood vessel to be clamped, and on the other hand, the blood vessel to be clamped can be stably kept in the jaws formed by the hook portion 21. During the clamping process, the blood vessel to be clamped is not easy to slip out of the jaws, making the blood vessel clamping process stable and effective. Among them, through the cooperation of the first shaping rod 91, the tourniquet and the clamp arm, the distal end of the tourniquet 43 to be inserted into the groove can stably form a ring-shaped portion to surround the blood vessel, and then the ring-shaped portion is clasped by the firing structure to clamp the blood vessel, and the clamping is stable.

[0065] In addition, the cartridge assembly proposed in the present invention can achieve the control of the firing structure stroke, the control of the firing structure and the clamping force applied to the blood vessel to be clamped by the hook portion of the clamp arm, so that the cartridge assembly can be used to clamp blood vessels of different thicknesses, without the need to frequently replace different types of hemostatic forceps according to the different diameters of the blood vessels to be clamped. Specifically, the cartridge assembly can be used to clamp blood vessels of different thicknesses, as explained below: the blood vessel wall of a thick blood vessel is thicker, and the blood vessel wall of a thin blood vessel is thinner. In order to stably clamp the blood vessel with the cartridge assembly, the distance between the firing structure and the hook portion should be less than or equal to the thickness of the two blood vessel walls of the blood vessel to be clamped. The cartridge assembly proposed in the present invention can adjust the distance between the firing structure and the hook portion to be less than or equal to the thickness of the two blood vessel walls of the blood vessel to be clamped by controlling the firing structure stroke, that is, it can control the firing structure and the clamping force applied to the blood vessel to be clamped by the hook portion of the clamp arm, and thus can be used to clamp blood vessels of different thicknesses.

[0066] The adapter 8 includes an insertion channel 81 and a driving shaft 82 passing through the insertion channel 81 .

[0067] The proximal end of the tube body 11 is inserted into the insertion channel 81, the proximal end of the tube body 11 is connected to the insertion channel 81, the drive shaft 82 is located on the proximal side of the actuator, and the distal end of the drive shaft 82 is connected to the proximal end of the actuator for driving the actuator. In this embodiment, the proximal end of the tube body 11 and the insertion channel 81 are relatively immobile in the proximal and distal directions.

[0068] Preferably, when the belt feeding structure is located at the distal end position of the belt feeding, the tourniquet 43 to be inserted is integrally bent along the belt containing groove 22 to form a ring-shaped portion.

[0069] Preferably, if Figure 3 As shown, the belt feeding groove 22 includes a straight groove 23 extending along a straight line and an arc groove 24 extending along an arc line. The first end of the straight groove 23 is used for the tourniquet 41 to enter. 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. The second end of the arc groove 24 is provided with an opening toward the sleeve 12 for the tourniquet 43 to be inserted into the groove to extend out of the belt feeding groove 22. The direction in which the tourniquet 43 to be inserted into the groove extends out of the belt feeding groove 22 is parallel to the axial direction of the belt bin. In this way, the first shaping rod 91 is facilitated to cooperate with the distal end of the tourniquet 43 to be inserted into the groove extending out of the belt feeding groove 22, thereby facilitating the design of the first shaping rod 91.

[0070] Further preferably, in this embodiment, the extension direction of the straight groove 23 is the same as the axial direction of the belt bin, and the arc groove 24 is an arc groove 24 extending along a semicircular arc. In this way, the shape of the arc groove 24 is simple, and the tourniquet 43 to be inserted into the groove is convenient to bend along the arc groove 24.

[0071] Furthermore, in this embodiment, the direction of the hook portion 21 is consistent with the direction of the arc-shaped groove 24 .

[0072] Further preferably, the arc line along which the first concave arc surface 92 is formed is the same circle as the arc line along which the bottom surface of the arc groove 24 is formed; when the tape feeding piece 7 is at the tape 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 is connected to the bottom surface of the arc groove 24. In this way, the distal end of the tourniquet 43 to be inserted into the groove is formed and bent into a regular ring-shaped portion by the tape feeding groove 22 and the first concave arc surface 92, so as to better surround the blood vessel, thereby facilitating stable clamping of the blood vessel.

[0073] Furthermore, in this embodiment, the first shaping rod 91 includes a first straight rod 93 and a first arc rod 94 connected in sequence from near to far, the proximal end of the first straight rod 93 is fixedly connected to the belt feeding plate 7, and the bottom surface of the first arc rod 94 forms a first concave arc toward the lower part of the hook portion 21.

[0074] Preferably, if Figure 3 As shown, the tape bin assembly also includes a second shaping rod 95, the proximal end of which is fixedly installed in the sleeve 12, the distal end of which extends out of the sleeve 12, the second shaping rod 95 is located between the first shaping rod 91 and the clamp arm 2, and 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 tape feeding piece 7 is located at the tape feeding termination position, the arc line along the first concave arc surface 92, the arc line along the second concave arc surface 96, and the arc line along the bottom surface of the arc groove 24 are located on the same circle, and the distal end of the tourniquet 43 to be inserted into the groove is shaped and bent into a circular ring by the tape feeding groove 22, the first concave arc surface 92, and the second concave arc surface 96. In this way, the distal end of the tourniquet 43 to be inserted into the groove is shaped and bent into a circular ring, which is further conducive to surrounding the blood vessel, thereby facilitating the stable clamping of the blood vessel.

[0075] Furthermore, in this embodiment, the second shaping rod 95 includes a second straight rod 97 and a second arc rod 98 connected in sequence from near to far, the proximal end of the second straight rod 97 is fixedly installed in the sleeve 12, and the top surface of the second arc rod 98 forms a second concave arc surface 96 facing the upper part of the hook portion 21.

[0076] Preferably, if Figure 3As shown, the proximal end of the firing rod 50 is inserted into the tube body 11, and the distal end of the firing rod 50 is passed through the sleeve 12; the proximal end of the clamp arm 2 is fixedly installed at the bottom of the sleeve 12, and the first shaping rod 91, the firing rod 50, the tape feeding piece 7, the tape bin structure and the clamp arm 2 are arranged in sequence from top to bottom in the sleeve 12, and a strip hole 53 is opened at the distal end of the firing rod 50, and the proximal end of the first shaping rod 91 has a columnar portion 99 extending in the up and down direction, and the columnar portion 99 passes through the strip hole 53 and is fixedly connected with the tape feeding piece 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 hypothetical sleeve wall extending far from the sleeve 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 sleeve 12, so that the hook portion 21 can adapt to more diameter types of blood vessels to be clamped; by arranging the first shaping rod 91, the firing rod 50, the tape feeding piece 7, the tape bin structure and the clamp arm 2 in the sleeve 12 from top to bottom, the structure is compact and the design of the first shaping rod 91 is simplified; by opening a strip hole 53 at the distal end of the firing rod 50, the columnar portion 99 of the first shaping rod 91 passes through and is fixedly connected to the tape feeding piece 7, the firing structure and the tape feeding piece 7 and the first shaping rod 91 do not interfere with each other, which is conducive to the stable execution of the firing action and the tape feeding action.

[0077] Further preferably, the distal end of the firing rod 50 has a snapping head 51 for snapping the looped portion of the tourniquet, and the distal portion of the snapping head 51 has a snapping surface 52 adapted to the bottom surface of the arc groove 24; during the firing process, the snapping head 51 moves distally into the arc groove 24.

[0078] Further preferably, a tape 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 tape feeding piece 7 to pass through. Since the distal end of the tape feeding piece 7 cooperates with the tourniquet 43 to be inserted into the groove, the distal end of the tape feeding piece 7 is prone to interfere with the second shaping rod 95 during the feeding process of the tourniquet 43 to be inserted into the groove. By providing the tape feeding channel on the second shaping rod 95, the distal end of the tape feeding piece 7 is prevented from interfering with the second shaping rod 95.

[0079] Preferably, if Figure 3As shown, the belt bin bottom plate is placed on the clamp arm 2, and the proximal end of the belt feeding groove 22 is located below the belt bin 42; the belt feeding groove 22 is located on the distal side of the belt bin bottom plate, or the proximal end of the belt feeding groove 22 partially overlaps with the belt bin bottom plate; during the process of clamping the blood vessel, when the belt feeding structure is located at the initial position of the proximal end of the belt feeding structure, the tourniquet 43 to be entered by the clamp is located in the belt containing groove 22, and the belt feeding structure moves far away, and the belt feeding piece 7 pushes the tourniquet 41 at the farthest end of the belt bin to leave the belt bin bottom plate and sink into the proximal end of the belt feeding groove 22, and the belt feeding structure pushes the tourniquet 43 to be entered by the clamp to move far away along the belt containing groove 22, and when the belt feeding structure is located at the distal end terminal position of the belt feeding structure, the tourniquet 41 at the farthest end of the clamping bin completely enters the proximal end of the belt containing groove 22, and the distal end of the tourniquet 43 to be entered by the clamp is bent into an annular portion along the belt containing groove 22, and the distal end of the tourniquet 43 to be entered by the clamp extends out of the belt containing groove 22. In this way, the belt feeding process and the resetting process of the belt feeding structure are facilitated, thereby realizing continuous belt feeding of the belt feeding structure, and making the shape of the clamp arm 2 simple, which is conducive to feeding the tourniquet 41 from the belt bin 42 into the belt feeding groove 22. Further preferably, in this embodiment, the belt bin 42 has a left side wall and a right side wall, and the belt feeding groove 22 has a left side surface and a right side surface, and the inner side surface of the left side wall is coplanar with the left side surface, and the inner side surface of the right side wall is coplanar with the right side surface.

[0080] Preferably, an elastic guide sheet (not shown in the figure) extending along the belt feeding direction and tilting toward the inside of the belt feeding groove 22 is provided at the far end of the side wall of the belt bin 42; during the belt feeding process, the tourniquet 41 enters the belt feeding groove 22 along the channel formed between the elastic guide sheet and the bottom plate of the belt bin. In this way, when the belt bin assembly 1 is in any placement state, during the belt feeding process, the tourniquet 41 can stably enter the belt feeding groove 22, thereby improving the stability of the tourniquet 41 entering the groove.

[0081] Preferably, the belt bin 42 includes a belt bin 42 top plate (not shown in the figure) located at the far end of the belt bin 42, and the two side portions of the belt bin 42 top plate are respectively connected to the two side walls of the belt bin 42; an elastic pressing sheet is provided on the belt bin 42 top plate, which is tilted along the belt feeding direction and toward the belt feeding groove 22, and the elastic pressing sheet is located at the far side of the elastic guide sheet; during the belt feeding process, when the tourniquet 41 completely enters the belt feeding groove 22, the tourniquet 41 is pressed by the elastic pressing sheet. By providing the elastic pressing sheet, the state of the tourniquet 41 completely entering the belt feeding groove 22 is stabilized, which is conducive to the belt feeding sheet 7 pushing the tourniquet 41 to continue to move forward steadily along the belt feeding groove 22, so that the tourniquet 41 is bent along the shape of the belt feeding groove 22.

[0082] Specifically, the elastic compression piece includes a connecting portion and a compression portion, the plane where the connecting portion is located is an inclined plane extending toward the inside of the tape feeding slot 22, the first end of the connecting portion is connected to the top plate of the tape bin 42, the second end of the connecting portion is connected to the first end of the compression portion, and the plane where the compression portion is located is parallel to the bottom surface of the proximal end of the tape feeding slot 22. As configured above, the compression contact between the elastic compression piece and the tourniquet 41 is increased, making the compression stable, and at the same time, the compression time of the elastic compression piece on the tourniquet 41 is increased, further ensuring the stability of the tourniquet 41 continuing to move along the tape feeding slot 22.

[0083] Preferably, if Figures 4 to 6 As shown, a first mounting groove 26 is provided on the left side surface at the far end of the tape feeding groove 22 along the tape feeding groove 22, and a second mounting groove 27 is provided on the right side surface of the tape feeding groove 22 at a position corresponding to the first mounting groove 26; a first clamping strip 28 is installed in the first mounting groove 26, a first side portion of the first clamping strip 28 extends into the first mounting groove 26, a second side portion of the first clamping strip 28 extends out of the first mounting groove 26, and the first side portion of the first clamping strip 28 is connected to the bottom of the first mounting groove 26 via a first resetting member 30; a second clamping strip 29 is installed in the second mounting groove 27, a first side portion of the second clamping strip 29 extends into the second mounting groove 27, a second side portion of the second clamping strip 29 extends out of the second mounting groove 27, and the first side portion of the second clamping strip 29 is connected to the second mounting groove 27. The bottoms of the mounting grooves 27 are connected by a second reset member 31; the second side of the first clamping strip 28 has a first guide surface 32 extending from the outside of the tape feeding groove 22 to the inside of the tape feeding groove 22, the first guide surface 32 is set toward the outside of the tape feeding groove 22, and the first guide surface 32 extends from the first end of the first clamping strip 28 to the second end of the first clamping strip 28; the second side of the second clamping strip 29 has a second guide surface 33 extending from the outside of the tape feeding groove 22 to the inside of the tape feeding groove 22, the second guide surface 33 is set toward the outside of the tape feeding groove 22, and the second guide surface 33 extends from the first end of the second clamping strip 29 to the second end of the second clamping strip 29; a tape feeding channel for the tourniquet 41 to advance is formed between the first clamping strip 28 and the bottom of the tape feeding groove 22, and between the second clamping strip 29 and the bottom of the tape feeding groove 22. The first reset member 30 and the second reset member 31 can be a tension spring, a compression spring, a rubber member, etc.

[0084] With such arrangement, the belt feeding channel can prevent the tourniquet 41 from being separated from the belt feeding groove 22 during the belt feeding process, and the belt feeding is stable, and at the same time, it is conducive to the distal end of the tourniquet 41 to be stably bent along the belt feeding groove 22 to the ring-shaped portion. In addition, in the process of the distal end of the firing structure clasping the ring-shaped portion of the tourniquet 41, the firing structure applies force through the tourniquet 41 to act on the first guide surface 32 and the second guide surface 33, and the first reset member 30 and the second reset member 31 yield, prompting the first clamping strip 28 and the second clamping strip 29 to retract into the first mounting groove 26 and the second mounting groove 27 respectively. At this time, due to the large thickness of the clamping whole composed of the clamped tourniquet 41 and the clamped blood vessel, the two side parts of the clamping whole will respectively press against the first clamping strip 28 and the second clamping strip 29, restricting the first clamping strip 28 from extending from the first mounting groove 26, and restricting the second clamping strip 29 from extending from the second mounting groove 27, so that after the firing structure is reset, it is easy for the clamping whole to be released from the belt feeding groove 22.

[0085] More preferably, if Figure 4 As shown, the first end of the belt feeding channel is located on the straight groove 23, and the second end of the belt feeding channel is located on the arc groove 24; when the tourniquet 41 is feeding along the belt feeding groove 22, the distal end of the tourniquet 41 enters the belt feeding channel, and the proximal end of the tourniquet 41 is pressed by the elastic pressing sheet. In this way, the belt feeding stability of the tourniquet 41 in the belt feeding groove 22 is further improved to prevent the mechanism from getting stuck.

[0086] Further preferably, the second side portion of the first clamping strip 28 further comprises a third guide surface 34 extending from the inside of the tape feeding slot 22 to the outside of the tape feeding slot 22, the third guide surface 34 is arranged toward the inside of the tape feeding slot 22, and the third guide surface 34 extends from the first end of the first clamping strip 28 to the second end of the first clamping strip 28; the second side portion of the second clamping strip 29 further comprises a fourth guide surface 35 extending from the inside of the tape feeding slot 22 to the outside of the tape feeding slot 22, the fourth guide surface 35 is arranged toward the inside of the tape feeding slot 22, and the fourth guide surface 35 extends from the first end of the second clamping strip 29 to the second end of the second clamping strip 29. By providing the third guide surface 34 and the fourth guide surface 35, it is further facilitated to release the clamped whole from the tape feeding slot 22.

[0087] It should be noted that the number of first mounting grooves 26 can be one or more than two, and accordingly, the number of first clips 28 can be one or more than two; the number of second mounting grooves 27 can be one or more than two, and accordingly, the number of second clips 29 can be one or more than two.

[0088] The belt bin 42 for placing a series of tourniquets 41 includes a belt bin bottom plate and a first side wall and a second side wall extending vertically upward from both sides of the belt bin bottom plate, wherein the left side of the tourniquet 41 is substantially in contact with the first side wall of the belt bin 42, and the right side of the tourniquet 41 is substantially in contact with the second side wall of the belt bin 42. In use, the belt bin 42 is suitable for placing one or more of the above-mentioned tourniquets 41 therein.

[0089] The tape feeding piece 7 comprises a transmission member 6 and a tape feeding piece 7. Figure 2 As shown, the transmission member 6 is located inside the belt bin 42 and is placed adjacent to the final tourniquet 41, that is, the distal end of the transmission member 6 can abut against the tail of the final tourniquet 41 when necessary to push the final tourniquet 41, thereby pushing the remaining tourniquets 41 except the tourniquet 43 to be inserted into the groove to move distally.

[0090] The transmission member 6 may have different structures and may use different other techniques to drive the tourniquet 41 to move toward the distal end of the band chamber 42. In this exemplary embodiment, Figure 7 As shown, the transmission member 6 is a sheet-like structure having a distal end and a proximal end and being generally strip-shaped. The width of the sheet-like structure should be smaller than the width between the first side wall and the second side wall of the belt bin 42, so that the transmission member 6 can move in the distal and proximal directions inside the belt bin 42. Preferably, the width of the transmission member 6 is substantially equal to the width between the first side wall and the second side wall of the belt bin 42, so that there is a certain friction force between the transmission member 6 and the first side wall and / or the second side wall of the belt bin 42. When the transmission member 6 is not required to move, the friction force between the transmission member 6 and the inner wall of the belt bin 42 can keep the transmission member 6 immobile to a certain extent; and when the belt feeding sheet 7 pushes the tourniquet 43 to be inserted into the curved portion of the belt feeding groove 22, the transmission member 6 can overcome the friction force between it and the inner wall of the belt bin 42 and slide, and no undesirable movement in directions other than the distal and proximal directions will occur during the sliding process, which helps to keep the belt feeding stable.

[0091] Furthermore, the transmission member 6 is provided with a structure that facilitates the transmission member 6 to move distally in the belt bin 42 and prevents the transmission member 6 from moving proximally, and such a structure can ensure the pushing and proper positioning of the tourniquet 41 in the belt bin 42, thereby allowing the transmission member 6 to move distally only a predetermined distance in each pushing. In this embodiment, the transmission member 6 includes a first transmission structure that can form a one-way transmission connection relationship with the belt feeding piece 7, so that when the belt feeding piece 7 moves toward the distal end of the belt bin 42, the transmission member 6 moves distally synchronously through the engagement of the first transmission structure.

[0092] The first transmission structure may be Figure 7The elastic push piece 61 formed on the transmission member 6 is shown as an example. In the natural state (i.e. when the transmission member 6 is taken out from the tape compartment 42), the elastic push piece 61 is preferably a preformed slender cantilever structure, which tilts from the far end of the transmission member 6 to the near end of the transmission member 6 and above the transmission member 6, forming an angle with the transmission member 6, and at the same time, the free end of the cantilever structure forms a first tilted end 62 that abuts against the tape feed piece 7. At the same time, a second transmission structure that forms a one-way transmission connection relationship with the elastic push piece 61, especially with the first tilted end 62 of the elastic push piece 61, is formed on the tape feed piece 7. The second transmission structure is Figure 3 The exemplary one-way push grooves 71 provided at the bottom of the tape feed piece 7 are used to engage with the elastic push piece 61 provided on the transmission member 6. The number of the one-way push grooves 71 is variable. The one-way push grooves 71 are preferably arranged at equal intervals to ensure that the tape feed piece 7 can engage and push the transmission member 6 each time the tape feed piece 7 is pushed. Preferably, the proximal wall of the one-way push groove 71 is a push wall 72, and the distal wall of the one-way push groove 71 is an inclined wall 73 inclined toward the distal end; the elastic push member 61 is located in one of the multiple one-way push grooves 71 in a natural state, and when the tape feeding plate 7 moves toward the distal end of the tape magazine 42, the proximal wall of the one-way push groove 71 and the elastic push member 61 form a same-direction push transmission, that is, the first cocked end 62 of the elastic push member 61 is engaged in one of the one-way push grooves 71 and abuts against the proximal wall of the engaged one-way push groove 71. Then, when the tape feeding plate 7 moves toward the distal end, due to the abutment of the cocked end with the proximal wall, the transmission member 6 moves synchronously toward the distal end. After the tape feeding piece 7 completes feeding the tape into the bending part of the tape feeding groove 22, when it moves to the proximal end of the tape bin 42 to reset, the first raised end 62 of the elastic push piece 61 disengages from the state of abutting against the proximal wall, and slides along the distal wall of the one-way push groove 71 until the two disengage and enter the next one-way push groove 71.

[0093] As described above, the transmission member 6 also includes a first stop structure formed thereon for preventing the transmission member 6 from moving toward the proximal end of the belt compartment 42. The first stop structure may be an elastic stop member 63, such as Figure 7As shown in the exemplary embodiment, the elastic stopper 63 is a stopper spring sheet disposed on the transmission member 6, and the stopper spring sheet is preferably tilted toward at least one side of the top of the tape compartment 42 in the middle of the transmission member 6 in the left-right direction. Preferably, the elastic stopper 63 is integrally protruded from the upper surface of the transmission member 6, and its height can exceed the top of the tape compartment 42, so as to ensure that the second tilted end 64 of the elastic stopper 63 tilted toward at least one side of the top of the tape compartment 42 can accurately engage with at least one side of the top of the tape compartment 42, so that the transmission member 6 does not move toward the proximal end when the tape feeder 7 moves toward the proximal end of the tape compartment 42 to reset. At the same time, although the height of the elastic stopper 63 exceeds the top of the tape compartment 42, it should be understood that the height of the elastic stopper 63 is set so that there will be no interference between the elastic stopper 63 and the movement of the tape feeder 7 located at the top of the tape compartment 42, so as to ensure that the tape feeder 7 can be stably pushed toward the far end of the tape compartment 42 and reset toward the proximal end of the tape compartment 42.

[0094] In this embodiment, the elastic stopper 63 is preferably as follows Figure 7 As shown, it includes a horizontal portion 65 and an inclined portion 66 located in the same horizontal plane and arranged at an angle to each other. The horizontal portion 65 is located on the far side of the inclined portion 66, and the horizontal portion 65 is parallel to the axis of the belt compartment 42, extends in the far and near direction, and is located in the middle of the transmission member 6 in the left and right direction. The horizontal portion 65 is connected to the fixed end 67 of the transmission member 6, which is the distal end of the elastic stop member 63. The other end of the horizontal portion 65 is connected to one end of the inclined portion 66. The inclined portion 66 is extended / tilted from the connected end toward at least one side of the top of the belt compartment 42 to form a second tilted end 64, that is, the inclined portion 66 is extended / tilted from the connected end to the left and / or right. When 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 in the belt compartment 42. The fixed end 67 is as shown in FIG. Figure 7 As shown in the example, it is roughly in a "T" shape, so as to increase the connection strength with the transmission member 6, ensure that the elastic stop member 63 is stably protruded as a whole and is arranged on the upper part of the transmission member 6, and can form an effective stop cooperation with the second stop structure on the belt compartment 42, so as to avoid the transmission member 6 from having undesired proximal movement.

[0095] Preferably, at the top of one of the side walls of the tape bin 42, a side top wall 44 substantially parallel to the tape bin bottom plate extends perpendicular to the side wall, and the side top wall 44 and the elastic stopper 63 of the transmission member 6 are substantially located at the same horizontal plane. More preferably, the height of the elastic stopper 63 can be slightly higher than the side top wall 44 to ensure that the elastic stopper 63 is engaged with the second stopper structure provided on the side top wall 44 to prevent the transmission member 6 from undesirably moving toward the proximal end of the tape bin 42. The second stopper structure provided on the side top wall 44 of the tape bin 42 can have different structures. In this embodiment, one of the second stopper structures is exemplarily shown as a one-way stopper groove 45; Figure 8As shown, the open notch of the one-way stop groove 45 is horizontally oriented toward the middle part of the left-right direction of the top of the belt compartment 42, so that the elastic stopper 63 integrally protruding from the transmission member 6 is tilted from the middle of the transmission member 6 horizontally toward the top wall 44 of the belt compartment 42 and enters 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 slide-out wall 47 suitable for the elastic stopper 63 to slide in the distal direction to enter the next one-way stop groove 45. The elastic stop member 63 is located in a one-way stop groove 45 in a natural state. When the tape feeding piece 7 moves toward the far end of the tape magazine 42, due to the one-way transmission connection between the transmission member 6 and the tape feeding piece 7, the transmission member 6 will move toward the far end with the tape feeding piece 7. At this time, the sliding wall 47 forms a bias on the second tilted end 64 of the elastic stop member 63. As the transmission member 6 moves further toward the far end, the second tilted end 64 will slide out of the one-way stop groove 45 where it was originally located, and enter the next one-way stop groove 45 toward the far end and engage with it; when the tape feeding piece 7 moves toward the proximal end of the tape magazine 42, the stop wall 46 of the one-way stop groove 45 and the second tilted end 64 of the elastic stop member 63 form an abutment stop to prevent the transmission member 6 from sliding toward the proximal end of the tape magazine 42.

[0096] In this embodiment, the tourniquet 43 to be inserted into the clamp is pushed by the head of the belt feeding piece. To facilitate the head of the belt feeding piece to push the tourniquet 43 to be inserted into the clamp, preferably, a notch for accommodating the head of the belt feeding piece is provided at the proximal end and / or the distal end of the tourniquet. In this way, a space for accommodating the head of the belt feeding piece is formed between adjacent tourniquets through the notch, so that the head of the belt feeding piece can facilitate the pushing of the tourniquet 43 to be inserted into the clamp by the head of the belt feeding piece.

[0097] During the resetting process of the belt feeding structure, the belt feeding structure moves toward the proximal end of the belt warehouse, and the head of the belt feeding piece will drive all the tourniquets in the belt receiving groove 22 except the tourniquet 43 to be inserted into the clamp to move forward toward the proximal end of the belt warehouse. When the tourniquet at the nearest end of the belt receiving groove 22 contacts the proximal end wall of the belt receiving groove 22, the proximal end wall will block all the tourniquets in the belt receiving groove 22 except the tourniquet 43 to be inserted into the clamp from continuing to move toward the proximal end of the belt warehouse. Since the head of the belt feeding piece is elastic, the head of the belt feeding piece will move over the adjacent tourniquet on its proximal side to the recess and stop, preparing for the next belt feeding and firing.

[0098] It should be noted that the tourniquet involved in this embodiment has shape-retaining ability. Specifically, the tourniquet can be shaped into an annular structure along the arc surface in the length direction, and the annular 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 clamp arm and a second clamp arm distributed on both sides of the bent portion. The two clamp arms are in an arc shape protruding in the same direction; the bent structure is elastic and can maintain its own shape when not subjected to force. In this way, the formed bent structure can stably clamp the blood vessel to be clamped due to shape retention. In addition, the material of the tourniquet involved in this embodiment is a bioabsorbable material. In order to meet the requirements of the shape-retaining ability and bioabsorbability of the tourniquet, magnesium-aluminum alloy and the like can be selected to prepare the tourniquet.

[0099] Example 2

[0100] This embodiment uses the driving method of the hemostatic forceps of Embodiment 1, including a belt feeding step, a firing step and a resetting step.

[0101] The tape feeding step includes:

[0102] S11. After the hook portion of the clamp arm hooks the blood vessel to be clamped, the belt feeding piece and the first shaping rod move together from the initial belt feeding position to the distance, and the belt feeding piece pushes all the tourniquets in the belt bin structure to move away, wherein the tourniquet to be entered into the groove is pushed into the belt feeding groove and continues to move along the belt feeding groove until the belt feeding piece and the first shaping rod move together to the shaping position, at which time the tourniquet to be entered into the groove moves along the belt feeding groove until the distal end of the tourniquet to be entered into the groove extends out of the belt feeding groove, and the first concave arc surface of the first shaping rod moves until it abuts against the distal end of the tourniquet to be entered into the groove.

[0103] S12, the belt feeding piece and the first shaping rod continue to move together from the shaping position to the far side, the belt feeding piece pushes the tourniquet to be inserted into the groove to continue to move forward along the belt feeding groove, and at the same time, the distal end of the tourniquet to be inserted into the groove is shaped and bent along the first concave arc surface until the belt feeding piece and the first shaping rod move together to the belt feeding end position, at which time the distal end of the tourniquet to be inserted into the groove is shaped and bent into a ring-shaped portion by the belt feeding groove and the first concave arc surface, and the distal end of the tourniquet to be inserted into the groove is arranged close to the bottom of the hook portion. In this way, the ring-shaped portion surrounds the blood vessel to be clamped.

[0104] The firing steps include:

[0105] S2, the firing structure moves far to the firing end position, so that the distal end of the firing structure snaps onto the ring-shaped portion of the tourniquet to be inserted into the groove, thereby clamping the blood vessel with the tourniquet to be inserted into the groove.

[0106] The resetting steps include:

[0107] S3, the firing structure moves from the firing end position to the firing initial position, and then the tape feeding piece and the first shaping rod move from the tape feeding end position to the tape feeding initial position. In this way, the firing structure and the tape feeding structure are reset, and the clamped blood vessel is separated from the jaws formed by the hook portion.

[0108] In summary, the driving method of the hemostatic forceps proposed in this embodiment enables the blood vessel to be clamped to be stably maintained in the jaws formed by the hook portion during the clamping process, and the blood vessel to be clamped is not easy to slip out of the jaws during the clamping process, making the blood vessel clamping process stable and effective.

[0109] Example 3

[0110] The main difference between this embodiment and embodiment 1 is that:

[0111] The direction in which the tourniquet 43 to be inserted into the slot extends out of the belt feeding slot 22 is downward toward the belt bin. Such a design is also conducive to the first shaping rod to cooperate with the distal end of the tourniquet 43 to be inserted into the slot extending out of the belt feeding slot 22, thereby facilitating the design of the first shaping rod.

[0112] Accordingly, in this embodiment, the extension direction of the straight groove is in the same direction as the axial direction of the belt compartment, and the arc groove is an arc groove extending along an arc line greater than a semicircle. In this way, the shape of the arc groove is simple, and it is convenient for the tourniquet 43 to be inserted into the groove to bend along the arc groove.

[0113] The rest is the same as Example 1 and will not be described again here.

[0114] Example 4

[0115] The main difference between this embodiment and embodiment 1 is that:

[0116] The firing structure includes a firing rod, the proximal end of which is inserted into the tube body 11, and the distal end of which is passed through the sleeve 12; the proximal end of the clamp arm 2 is fixedly installed at the bottom of the sleeve 12, and the firing rod, the belt feeding plate 7, the belt bin structure and the clamp arm 2 are arranged in sequence from top to bottom in the sleeve 12, and the first shaping rod is located between the firing rod and the belt bin structure; a strip hole is opened at the distal end of the first shaping rod, and the snapping head of the firing rod is downwardly passed through the strip 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 hypothetical sleeve wall extending far from the sleeve 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 sleeve 12, so that the hook portion 21 can adapt to more diameter types of blood vessels to be clamped; by arranging the firing rod, the first shaping rod, the tape feeding piece 7, the tape bin structure and the clamp arm 2 in the sleeve 12 from top to bottom in sequence, the structure is compact and the design of the firing rod is simplified, and the connection between the first shaping rod and the tape feeding piece 7 is facilitated; by opening a strip hole at the distal end of the first shaping rod for the snapping head to pass through, the firing structure and the tape feeding piece 7 and the first shaping rod do not interfere with each other, which is conducive to the stable execution of the firing action and the tape feeding action.

[0117] The rest is the same as Example 1 and will not be described again here.

[0118] Example 5

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

[0120] The tape bin bottom plate is placed on the clamp arm 2, the tape feeding slot 22 is located at the far side of the tape bin bottom plate, the proximal bottom surface of the tape feeding slot 22 is coplanar with the tape bin bottom plate, and the proximal end of the tape feeding slot 22 is provided with an opening facing the tape bin; the tape feeding piece 7 pushes the tourniquet to leave the tape bin bottom plate and enter the tape feeding slot 22 from the opening of the tape feeding slot 22. In this way, it is convenient to feed the tourniquet from the tape bin into the tape feeding slot 22.

[0121] Furthermore, in this embodiment, the tape bin is closely arranged with the tape feeding slot 22 , the inner side surface of the left side wall of the tape bin is coplanar with the left side surface of the tape feeding slot 22 , and the inner side surface of the right side wall of the tape bin is coplanar with the right side surface of the tape feeding slot 22 .

[0122] Preferably, the first mounting groove 26 and the second mounting groove 27 extend from the first end of the belt feeding groove 22 to the second end of the belt feeding groove 22. In this way, the tourniquet enters the belt feeding channel at the same time as leaving the belt compartment, making the belt feeding more stable, and there is no need to set an elastic guide sheet and an elastic pressing sheet.

[0123] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A tape bin assembly, characterized in that: It comprises a tape bin structure, a tape feeding piece (7), a firing rod (50), a first shaping rod (91), a clamp arm (2) and a sleeve (12); The belt bin structure comprises at least one strip-shaped tourniquet (41) and a belt bin (42) for accommodating at least one strip-shaped tourniquet (41); the at least one tourniquet (41) is sequentially arranged in a distal direction and stored inside the belt bin (42); the belt bin (42) is fixedly accommodated in the sleeve (12); The proximal end of the clamp arm (2) is fixedly mounted in the sleeve (12), the distal end of the clamp arm (2) has a hook portion (21), the hook portion (21) extends out of the sleeve (12), and a tape feeding groove (22) is provided on the clamp arm (2), the proximal end of the tape feeding groove (22) is located in the sleeve (12) and communicates with the space inside the tape bin (42) to form a tape feeding channel, and the distal end of the tape feeding groove (22) is located inside the hook portion (21) and is bent along the shape of the hook portion (21); The distal end of the belt feeding piece (7) is inserted into the sleeve (12), and the belt feeding piece (7) cooperates with the tourniquet (41); the proximal end of the first shaping rod (91) is inserted into the sleeve (12), and the proximal end of the first shaping rod (91) is fixedly connected to the belt feeding piece (7), and 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 firing rod (50) is inserted into the sleeve (12), and the firing rod (50) cooperates with the hook portion (21); The belt feeding piece (7) and the first shaping rod (91) move together between a belt feeding initial position, a shaping position and a belt feeding termination position arranged from near to far; during the process of clamping a blood vessel, the tourniquet (41) located at the farthest end of the belt feeding channel is the tourniquet (43) to be inserted into the groove, and the belt feeding piece (7) moves away from the belt feeding initial position, pushing all the tourniquets (41) in the belt feeding channel to move away; when the belt feeding piece (7) is at the shaping position, the tourniquet (43) to be inserted into the groove moves along the belt feeding groove (22) until the distal end of the tourniquet (43) to be inserted into the groove protrudes out of the belt feeding groove (22), and the first concave arc surface (92) moves to abut against the distal end of the tourniquet (43) to be inserted into the groove; when the belt feeding piece is at the belt feeding termination position, the distal end of the tourniquet (43) to be inserted into the groove is shaped and bent into a ring-shaped portion by the belt feeding groove (22) and the first concave arc surface (92); The firing rod (50) moves away to close the ring-shaped portion of the tourniquet (43) to be inserted into the groove.

2. The tape bin assembly according to claim 1, characterized in that: The belt feeding groove (22) comprises a straight groove (23) extending along a straight line and an arcuate groove (24) extending along an arc line, the first end of the straight groove (23) is used for the tourniquet (41) to enter, the second end of the straight groove (23) is connected to the first end of the arcuate groove (24), the second end of the arcuate groove (24) is located at the free end of the hook portion (21), and the second end of the arcuate groove (24) is provided with an opening facing the sleeve (12) for the tourniquet (43) to be inserted into the groove to extend out of the belt feeding groove (22); The direction in which the hemostatic belt (43) to be inserted into the slot extends out of the belt feeding slot (22) is parallel to the axial direction of the belt bin, or the direction in which the hemostatic belt (43) to be inserted into the slot extends out of the belt feeding slot (22) is downward toward the belt bin.

3. The tape bin assembly according to claim 2, characterized in that: The extending direction of the straight groove (23) is the same as the axial direction of the belt bin, and the arc groove (24) is an arc groove (24) extending along a semicircular arc; or, The extension direction of the straight groove (23) is the same as the axial direction of the belt bin, and the arc groove (24) is an arc groove (24) extending along an arc line that is larger than a semicircle.

4. The tape bin assembly according to claim 2, characterized in that: The arc line along which the first concave arc surface (92) is formed and the arc line along which the bottom surface of the arc-shaped groove (24) is formed belong to the same circle; When the belt feeding piece (7) is located at the belt 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) is connected to the bottom surface of the arc groove (24).

5. The tape bin assembly according to claim 2, characterized in that: The belt bin assembly further comprises a second shaping rod (95), the proximal end of the second shaping rod (95) being fixedly mounted in the sleeve (12), the distal end of the second shaping rod (95) extending out of the sleeve (12), the second shaping rod (95) being located between the first shaping rod (91) and the clamp arm (2), the distal end of the second shaping rod (95) having a second concave arc surface (96) facing the upper part of the hook portion (21); When the belt feeding piece (7) is located at the belt feeding termination position, the distal end of the tourniquet (43) to be inserted into the groove is bent into a circular ring portion by the belt feeding groove (22), the first concave arc surface (92) and the second concave arc surface (96).

6. The tape bin assembly according to claim 5, characterized in that: When the tape feeding piece (7) is located at the tape feeding termination position, the arc line along which the first concave arc surface (92) is located, the arc line along which the second concave arc surface (96) is located, and the arc line along which the bottom surface of the arc groove (24) is located on the same circle.

7. The tape bin assembly according to claim 2, characterized in that: The distal end of the firing rod (50) has a snapping head (51) for snapping the ring-shaped portion of the tourniquet, and the distal portion of the snapping head (51) has a snapping surface (52) adapted to be arranged on the bottom surface of the arc-shaped groove (24); during the firing process, the snapping head (51) moves distally into the arc-shaped groove (24).

8. The tape bin assembly according to claim 1, characterized in that: The proximal end of the clamp arm (2) is fixedly mounted on the bottom of the sleeve (12); the first shaping rod (91), the firing rod (50), the tape feeding piece (7), the tape bin structure and the clamp arm (2) are arranged in sequence from top to bottom in the sleeve (12); a strip hole (53) is provided at the distal end of the firing rod (50); the proximal end of the first shaping rod (91) has a columnar portion (99) extending in the up-and-down direction; the columnar portion (99) passes through the strip hole (53) and is fixedly connected to the tape feeding piece (7).

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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