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

Abstract

The present invention proposes a belt bin assembly, including a belt bin structure, a belt feeding structure, a firing structure, a clamp arm and a sleeve; the belt bin structure includes at least one tourniquet and a belt bin for accommodating at least one tourniquet; the belt bin structure 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 a belt receiving groove is provided on the clamp arm, the proximal end of the belt receiving groove is located in the sleeve, and the distal 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 structure is inserted into the sleeve, and the firing structure is penetrated in the sleeve; the belt feeding structure moves far away, pushing all the tourniquets to move far away, and when the belt feeding structure is at the distal end position of the belt feeding structure, the distal end of the tourniquet to be inserted into the clamp is bent into a ring-shaped portion along the shape of the belt receiving groove; the firing structure moves far away to snap the ring-shaped portion of the tourniquet to be inserted into the clamp. During use, the blood vessel can be stably maintained in the jaws formed by the hook portion and stably clamped by the tourniquet.

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 band bin assembly, during use, the blood vessel can be stably kept in the jaws formed by the hook portion and stably clamped by the tourniquet.

[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 belt bin assembly, comprising a belt bin structure, a belt feeding structure, a firing structure, a clamp arm and a sleeve; the belt bin structure comprises at least one strip tourniquet and a belt bin for accommodating at least one strip tourniquet, at least one tourniquet being sequentially arranged in the far and near directions and stored inside the belt bin; the belt bin structure 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, the hook portion extends out of the sleeve, a belt accommodating groove is provided on the clamp arm, the proximal end of the belt accommodating groove is located in the sleeve and communicates with the inner space of the belt bin to form a belt feeding channel, the distal end of the belt accommodating groove is located on the inner side of the hook portion and is bent along the shape of the hook portion; the distal end of the belt feeding structure is inserted into the sleeve, the belt feeding structure cooperates with the tourniquet; the firing structure is penetrated in the sleeve, the firing structure cooperates with the hook portion;

[0011] During the process of clamping the blood vessel, the tourniquet located at the farthest end of the belt delivery channel is the tourniquet to be inserted, and the belt delivery structure moves distally, pushing all the tourniquets in the belt delivery channel to move distally. When the belt delivery structure is located at the distal end position of the belt delivery structure, the distal end of the tourniquet to be inserted is bent into an annular portion along the belt receiving groove, and the distal end of the tourniquet to be inserted extends out of the belt receiving groove; the firing structure moves distally to close the annular portion of the tourniquet to be inserted.

[0012] Optionally, the distal end of the bottom surface of the belt-containing groove includes an arcuate surface and a bent surface connected in sequence, the arcuate surface extends from the bottom of the hook portion to the top of the hook portion, the direction of the arcuate surface is consistent with the direction of the hook portion, the bent surface is located at the top of the hook portion, the direction of the bent surface deviates from the direction of the hook portion downward, and the tangent direction of the free end of the bent surface is toward the bottom of the hook portion.

[0013] Optionally, the proximal end of the clamp arm is fixedly mounted on the bottom of the sleeve, and the firing structure, the tape feeding structure, the tape bin structure and the clamp arm are arranged in sequence from top to bottom in the sleeve.

[0014] Optionally, the belt bin bottom plate is placed on the clamp arm, and the proximal end of the belt containing groove is located below the belt bin; the belt containing groove is located on the distal side of the belt bin bottom plate, or the proximal end of the belt containing groove 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 belt feeding proximal end, the tourniquet to be inserted into the clamp is located in the belt containing groove, and the belt feeding structure moves distally, and the belt feeding structure pushes the tourniquet at the farthest end of the belt bin to leave the belt bin bottom plate and sink into the proximal end of the belt containing groove, and the belt feeding structure pushes the tourniquet to be inserted into the clamp to move distally along the belt containing groove, and when the belt feeding structure is located at the distal end terminal position of the belt feeding, the tourniquet at the farthest end of the belt bin completely enters the proximal end of the belt containing groove.

[0015] Optionally, a first mounting groove is provided on the left side surface at the far end of the belt-containing groove, and a second mounting groove is provided on the right side surface of the belt-containing groove at a position corresponding to the first mounting groove; a first clamping strip is installed in the first mounting groove, a first side portion of the first clamping strip extends into the first mounting groove, and a second side portion of the first clamping strip extends out of the first mounting groove, and the first side portion of the first clamping strip is connected to the bottom of the first mounting groove by a first reset member; a second clamping strip is installed in the second mounting groove, a first side portion of the second clamping strip extends into the second mounting groove, and a second side portion of the second clamping strip extends out of the second mounting groove, and the first side portion of the second clamping strip is connected to the second The bottoms of the mounting grooves are connected by a second reset piece; a first guide surface extending from the outside of the belt-containing groove to the inside of the belt-containing groove is provided on the second side portion of the first clamping strip, the first guide surface is arranged toward the outside of the belt-containing groove, the first guide surface extends from the first end of the first clamping strip to the second end of the first clamping strip, and a second guide surface extending from the outside of the belt-containing groove to the inside of the belt-containing groove is provided on the second side portion of the second clamping strip, the second guide surface is arranged toward the outside of the belt-containing groove, and the second guide surface extends from the first end of the second clamping strip to the second end of the second clamping strip; a belt feeding channel for advancing the tourniquet is formed between the first clamping strip and the bottom of the belt-containing groove, and between the second clamping strip and the bottom of the belt-containing groove.

[0016] Optionally, the second side portion of the first clip also has a third guide surface extending from the inside of the belt-containing groove to the outside of the belt-containing groove, the third guide surface is arranged toward the inside of the belt-containing groove, and the third guide surface extends from the first end of the first clip to the second end of the first clip; the second side portion of the second clip also has a fourth guide surface extending from the inside of the belt-containing groove to the outside of the belt-containing groove, the fourth guide surface is arranged toward the inside of the belt-containing groove, and the fourth guide surface extends from the first end of the second clip to the second end of the second clip.

[0017] Optionally, the distal end of the bottom surface of the belt-containing groove includes an arcuate surface; the distal end of the firing structure has a snapping head for snapping the tourniquet annular portion, and the distal side of the snapping head has a snapping surface that adapts to the setting of the arcuate surface; during the firing process, the snapping head moves distally into the hook groove of the hook portion.

[0018] Optionally, a groove for the head of the tape feed piece to pass through is provided at the bottom of the snapping head.

[0019] Optionally, the distal end of the bottom surface of the belt-containing groove is an arcuate surface, which extends from the bottom of the hook portion to the top of the hook portion, and the direction of the arcuate surface is consistent with the direction of the hook portion. The first end of the arcuate surface is located at the bottom of the hook portion, and the second end of the arcuate surface is located at the top of the hook portion, and the second end of the arcuate surface is arranged toward the bottom of the hook portion.

[0020] In a second aspect, the present invention provides a hemostatic forceps having the cartridge assembly as described above.

[0021] In a third aspect, the present invention provides a method for driving the hemostatic forceps as described above, comprising the following steps:

[0022] S1. In the initial state, the belt feeding structure is located at the belt feeding initial position, and the firing structure is located at the firing initial position; after the hook portion of the clamp arm hooks the blood vessel to be clamped, the belt feeding structure moves distally, and all the tourniquets in the push belt bin structure move distally. When the belt feeding structure is located at the belt feeding terminal position, the distal end of the tourniquet to be inserted into the clamp is bent to the annular portion along the belt containing groove, and the blood vessel to be clamped is located inside the annular portion.

[0023] S2. The firing structure moves far to the firing end position, so that the distal end of the firing structure snaps onto the annular portion of the tourniquet of the clamp to be inserted, so that the tourniquet of the clamp to be inserted clamps the blood vessel.

[0024] S3, the firing structure moves proximally from the firing end position to the firing initial position, and then the belt feeding structure moves proximally from the belt feeding end position to the belt feeding initial position, and the clamped blood vessel is separated from the jaws formed by the hook portion.

[0025] (III) Beneficial effects

[0026] The beneficial effects of the present invention are:

[0027] 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. Furthermore, through the introduction of a belt bin structure, a belt feeding structure, and a firing structure, the coordination of the tourniquet and the clamp arm to clamp the blood vessel is achieved, and the continuous firing of the tourniquet is achieved.

[0028] In addition, the cartridge 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 cartridge 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

[0029] The present invention is described with the aid of the following drawings:

[0030] Figure 1 is a schematic diagram of the three-dimensional structure of the hemostatic forceps provided in Example 1 of the present invention, wherein the internal structure of the distal end of the hemostatic forceps is shown;

[0031] Figure 2 yes Figure 1 A magnified view of the distal end of the hemostat;

[0032] Figure 3 is a cross-sectional schematic diagram of the hemostatic forceps provided according to Example 1 of the present invention, wherein the belt feeding structure is located at the belt feeding initial position, and the firing structure is located at the firing initial position;

[0033] Figure 4 yes Figure 3 Enlarged diagram of the distal structure of the hemostatic forceps;

[0034] Figure 5 is a cross-sectional schematic diagram of the hemostatic forceps provided according to Embodiment 1 of the present invention, wherein the belt feeding structure is located at the belt feeding termination position;

[0035] Figure 6 yes Figure 5 Enlarged diagram of the distal structure of the hemostatic forceps;

[0036] Figure 7 is a cross-sectional schematic diagram of the hemostatic forceps provided according to Example 1 of the present invention, wherein the firing structure is located at the firing end position;

[0037] Figure 8 yes Figure 7Enlarged diagram of the distal structure of the hemostatic forceps;

[0038] Fig. 9 is a schematic diagram of the three-dimensional structure of a clamp arm provided according to Embodiment 1 of the present invention;

[0039] Fig.10 yes Fig. 9 An enlarged schematic diagram of the distal end of the middle forceps arm;

[0040] Fig.11 is a rear view schematic diagram of the clamp arm provided in Example 1 of the present invention;

[0041] Fig.12 is a schematic structural diagram of a transmission member provided in Example 1 of the present invention;

[0042] Fig.13 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: belt-containing groove; 23: straight surface; 24: arc surface; 25: bending surface; 26: first mounting groove; 27: second mounting groove; 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: tourniquet compartment; 43: tourniquet to be inserted; 44: side top wall; 45: one-way stop groove; 46: stop wall; 47: slide-out wall; 48: notch; 49: elastic pressing sheet;

[0049] 51: clapping head; 52: clapping surface;

[0050] 6: Transmission parts;

[0051] 61: elastic push piece; 62: first tilting end; 63: elastic stopper; 64: second tilting 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] 9: Wait for blood vessels to be clamped. 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 8 As shown, this embodiment provides a hemostatic forceps, which includes an adapter 8 and a magazine assembly 1.

[0060] like Figures 1 to 4 As shown, the tape bin assembly 1 includes an actuator (the actuator structure and its working principle have been embodied in the Chinese patent CN201911021573.1, with an application date of October 25, 2019 and a publication date of April 27, 2021. The entire text of the present invention cites the patent and will not be repeated here), a tape bin structure, a tape feeding structure, a firing structure, 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 storage structure includes at least one strip tourniquet 41 and a belt storage 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 inside the belt storage 42. The belt storage structure is accommodated in the sleeve 12, and the belt storage structure is fixedly connected to the sleeve 12. The proximal end of the clamp arm 2 is fixedly installed in the sleeve 12, and 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 receiving groove 22. The proximal end of the belt receiving groove 22 (i.e., the first end of the belt receiving groove 22) is located in the sleeve 12 and communicates with the inner space of the belt storage to form a belt feeding channel. The distal end of the belt receiving groove 22 (i.e., the second end of the belt receiving 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 structure is inserted into the sleeve 12, the belt feeding structure cooperates with the tourniquet 41, the proximal end of the belt feeding structure is inserted into the tube body 11, and the proximal end of the belt feeding structure is connected to the actuator so that the actuator drives the belt feeding structure to move in the distal and proximal directions, and is used to push the tourniquet 41 in the belt feeding channel to move distally (when the actuator drives the belt feeding structure to move distally), and is used to reset the belt feeding structure to the initial state after pushing the tourniquet 41 (when the actuator drives the belt feeding structure to move proximally). During the process of clamping the blood vessel, the tourniquet at the farthest end of the belt feeding channel is the tourniquet to be inserted into the clamp, the belt feeding structure moves distally, and the tourniquet in the pushing belt bin enters the belt receiving groove. When the belt feeding structure is at the distal end position of the belt feeding structure, the distal end of the tourniquet 43 to be inserted into the clamp is bent into an annular portion along the belt receiving groove 22 (such as Figure 5 and Figure 6 As shown in FIG. 2 , the distal end of the tourniquet 43 to be inserted into the clamp extends out of the belt receiving groove 22. 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 belt feeding structure completes the belt feeding, the actuator drives the firing structure to move in the distal direction, so that (when the actuator drives the firing structure to move distally) the firing structure snaps the annular portion (such as the ring portion) of the tourniquet 43 to be inserted into the clamp. Figure 7 and Figure 8 As shown in FIG. 1 , and used to reset the firing structure after snapping the tourniquet 41 to the initial state (when the actuator drives the firing structure to move proximally). The annular shape referred to in the present invention refers to any surrounding shape that can form a hollow, not just a circular ring shape.

[0063] In the tape bin assembly 1 thus configured, in the initial state, the tape feeding structure is located at the tape feeding 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 feeding structure to move far, pushing all the tourniquets 41 in the tape feeding channel to move far, so as to push the tourniquets 41 into the tape receiving groove 22, and the tape feeding structure is located at the tape feeding termination position, and the distal end of the tourniquet 43 to be inserted is bent along the tape receiving groove 22 to an annular portion, and the blood vessel to be clamped is located within the annular portion (i.e., the annular portion surrounds the blood vessel to be clamped). Afterwards, the actuator drives the firing structure to move far to the firing termination position, so that the distal end of the firing structure snaps onto the annular portion of the tourniquet 43 to be inserted, so that the tourniquet 43 to be inserted clamps the blood vessel. Finally, the actuator drives the firing structure and the belt feeding structure 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 belt feeding structure to move from the belt feeding end position to the belt feeding initial position, so as 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 conjunction 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. Furthermore, through the introduction of the belt bin structure, the belt feeding structure and the firing structure, the tourniquet 41 and the clamp arm 2 work together to clamp the blood vessel, and the tourniquet 41 is fired continuously.

[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 4 As shown, the bottom surface distal end of the band-containing groove 22 includes an arc surface 24 and a bending surface 25 connected in sequence, the arc surface 24 extends from the bottom of the hook portion 21 to the top of the hook portion 21, the direction of the arc surface 24 is consistent with the direction of the hook portion 21, the bending surface 25 is located at the top of the hook portion 21, the direction of the bending surface 25 deviates from the direction of the hook portion 21 and is downward, and the tangent direction of the free end of the bending surface is close to the bottom of the hook portion. In this way, by setting the arc surface 24, it is convenient for the tourniquet 41 to bend along the direction of the hook portion 21, and by setting the bending surface 25, it is convenient for the tourniquet 41 to bend downward to form a ring portion to wrap the blood vessel to be clamped. Further preferably, the arc surface 24 is a circular arc surface.

[0070] Further preferably, the arc surface 24 has a first connection position for connecting with the bending surface 25, and the bending surface 25 has a second connection position for connecting with the arc surface 24, and the angle formed by the tangent direction of the first connection position in the distal direction and the tangent direction of the second connection position in the distal direction is greater than 100°. In this way, it is convenient for the tourniquet 41 to bend along the direction of the hook portion 21 to transition to the bending surface 25, and continue to bend along the direction of the bending surface 25. Further, the angle formed by the tangent direction of the first connection position in the distal direction and the tangent direction of the second connection position in the distal direction is 120° to 150°.

[0071] It should be noted that the bottom surface of the tape receiving groove 22 set as above will not constrain the shape design of the hook portion 21, that is, the hook end of the hook portion 21 in this embodiment can be set upward, can be set downward, and can also be set parallel to the tape compartment axis. As an example, in this embodiment, the hook end of the hook portion 21 is set parallel to the tape compartment axis.

[0072] Preferably, if Figure 4As shown, the proximal end of the clamp arm 2 is fixedly mounted on the bottom of the sleeve 12, and the firing structure, the belt feeding structure, the belt storage structure and the clamp arm 2 are arranged in sequence from top to bottom in the sleeve 12. Since the hook portion 21 of the clamp arm 2 cannot exceed the assumed sleeve wall extending far from the sleeve 12, by fixing the proximal end of the clamp arm 2 on the bottom of the sleeve 12, the design size of the hook portion 21 is increased, thereby enabling the hook portion 21 to adapt to more diameter types of blood vessels to be clamped; by arranging the firing structure, the belt feeding structure, the belt storage structure and the clamp arm 2 in sequence from top to bottom in the sleeve 12, the structure is compact, and the cooperation between the belt feeding structure and the belt storage structure and the firing structure and the clamp arm 2 are facilitated.

[0073] Preferably, if Figure 4 As shown, the belt bin bottom plate is placed on the clamp arm 2, and the proximal end of the belt containing groove 22 is located below the belt bin 42; the belt containing groove 22 is located on the distal side of the belt bin bottom plate, or the proximal end of the belt containing 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 belt feeding proximal end, the tourniquet 43 to be entered by the clamp is located in the belt containing groove 22, and the belt feeding structure moves distally, and the belt feeding structure 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 containing groove 22, and the belt feeding structure pushes the tourniquet 43 to be entered by the clamp to move distally along the belt containing groove 22, and when the belt feeding structure is located at the distal end terminal position of the belt feeding, the tourniquet 41 at the farthest end of the belt 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, it is convenient to realize the belt feeding process and the resetting process of the belt feeding structure, thereby realizing continuous belt feeding of the belt feeding structure, and making the shape of the clamp arm 2 simple, which is convenient for feeding the tourniquet 41 from the belt bin 42 into the belt receiving groove 22. Further preferably, in this embodiment, the belt bin 42 has a left side wall and a right side wall, and the belt receiving 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.

[0074] In this embodiment, the tourniquet 43 to be inserted into the clamp is pushed by the head of the tape feeding piece. To facilitate the head of the tape feeding piece to push the tourniquet 43 to be inserted into the clamp, preferably, a notch 48 for accommodating the head of the tape 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 tape feeding piece is formed between adjacent tourniquets through the notch 48, so that the head of the tape feeding piece can facilitate the pushing of the tourniquet 43 to be inserted into the clamp.

[0075] During the resetting process of the belt feeding structure, the belt feeding structure moves toward the proximal end of the belt bin, 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 toward the proximal end of the belt bin. When the tourniquet at the closest 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 to continue to move toward the proximal end of the belt bin. 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 notch 48 and stop, preparing for the next belt feeding and firing. Preferably, an elastic guide piece (not shown in the figure) extending along the belt feeding direction and tilting toward the inside of the belt receiving groove 22 is provided at the distal end of the side wall of the belt bin 42; during the belt feeding process, the tourniquet 41 enters the belt receiving groove 22 along the channel formed between the elastic guide piece and the bottom plate of the belt bin. In this way, when the tape bin assembly 1 is in any placement state, the tourniquet 41 can stably enter the tape receiving groove 22 during the tape feeding process, thereby improving the stability of the tourniquet 41 entering the clamp.

[0076] Preferably, the belt bin 42 includes a belt bin 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 top plate are respectively connected to the two side walls of the belt bin 42; an elastic pressing sheet 49 is provided on the belt bin top plate, which is tilted along the belt feeding direction and toward the belt receiving groove 22, and the elastic pressing sheet 49 is located at the far side of the elastic guide sheet; during the belt feeding process, when the tourniquet 41 completely enters the belt receiving groove 22, the tourniquet 41 is pressed by the elastic pressing sheet 49. By providing the elastic pressing sheet 49, the state of the tourniquet 41 completely entering the belt receiving groove 22 is stabilized, which is conducive to the belt feeding structure pushing the tourniquet 41 to continue to move forward steadily along the belt receiving groove 22, so that the tourniquet 41 is bent along the shape of the belt receiving groove 22.

[0077] Specifically, the elastic compression piece 49 includes a connecting portion and a compression portion, the plane where the connecting portion is located is an inclined surface extending toward the inside of the belt-containing groove 22, the first end of the connecting portion is connected to the belt bin top plate, 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 belt-containing groove 22. As configured above, the compression contact between the elastic compression piece 49 and the tourniquet 41 is increased, making the compression stable, and at the same time, the compression time of the elastic compression piece 49 on the tourniquet 41 is increased, further ensuring the stability of the tourniquet 41 continuing to move along the belt-containing groove 22.

[0078] Preferably, if Figures 9 to 11As shown, a first mounting groove 26 is provided on the left side surface at the far end of the belt-containing groove 22 along the direction of the belt-containing groove 22, and a second mounting groove 27 is provided on the right side surface of the belt-containing 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 2 The bottom of the first clamping strip 29 is 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 belt-containing groove 22 to the inside of the belt-containing groove 22, the first guide surface 32 is set toward the outside of the belt-containing 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 belt-containing groove 22 to the inside of the belt-containing groove 22, the second guide surface 33 is set toward the outside of the belt-containing 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 curved channel for the tourniquet 41 to advance is formed between the first clamping strip 28 and the bottom of the belt-containing groove 22, and between the second clamping strip 29 and the bottom of the belt-containing 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.

[0079] With such arrangement, the curved channel can prevent the tourniquet 41 from escaping from the belt-containing groove 22 during the belt feeding process, thereby ensuring stable belt feeding and facilitating the distal end of the tourniquet 41 to be stably bent along the belt-containing groove 22 to the annular portion. In addition, in the process of the distal end of the firing structure snapping the annular portion of the tourniquet 41, the firing structure applies force to the first guide surface 32 and the second guide surface 33 through the tourniquet 41, 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, since the overall thickness of the clamped tourniquet 41 and the clamped blood vessel (i.e., the sum of the thickness of the two layers of tourniquet 41 and the thickness of the two layers of the blood vessel wall to be clamped) is relatively large, the two side portions 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, the clamping whole is easy to be released from the belt groove 22.

[0080] More preferably, if Figure 4As shown, the bottom surface distal end of the belt-containing groove 22 includes a straight surface 23, an arc surface 24 and a bent surface 25 connected in sequence, the first end of the curved channel is located on the straight surface 23, and the second end of the curved channel is located on the arc surface 24; in the process of the tourniquet 41 moving forward along the belt-containing groove 22, the distal end of the tourniquet 41 enters the curved channel, and the proximal end of the tourniquet 41 is pressed by the elastic pressing sheet 49. In this way, the feeding stability of the tourniquet 41 in the belt-containing groove 22 is further improved to prevent the mechanism from getting stuck.

[0081] 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 belt-containing groove 22 to the outside of the belt-containing groove 22, the third guide surface 34 is arranged toward the inside of the belt-containing groove 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 belt-containing groove 22 to the outside of the belt-containing groove 22, the fourth guide surface 35 is arranged toward the inside of the belt-containing groove 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 belt-containing groove 22.

[0082] 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.

[0083] Preferably, if Figure 4 As shown, the distal end of the firing structure has a snapping head 51 for snapping the annular portion of the tourniquet 41, and the distal part of the snapping head 51 has a snapping surface 52 adapted to the arrangement of the arc surface 24; during the firing process, the snapping head 51 moves far away to the hook groove of the hook portion 21. The snapping head 51 arranged in this way facilitates the snapping of the annular portion of the tourniquet 41, snapping the annular portion of the tourniquet 41 into a crescent shape, as shown in FIG. Figure 8 As shown, the blood vessels can be effectively clamped.

[0084] Further preferably, a groove (not shown in the figure) is provided at the bottom of the snap-on head 51 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 of the clamp to be inserted, the distal end of the tape feeding piece 7 is prone to interfere with the bottom of the snap-on head 51 during the tape feeding process of the tourniquet 43 of the clamp to be inserted. By providing a groove at the bottom of the snap-on head 51 for the distal end of the tape feeding piece 7 to pass through, the distal end of the tape feeding piece 7 is prevented from interfering with the bottom of the snap-on head 51.

[0085] 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.

[0086] The tape feeding structure includes a transmission member 6 and a tape feeding piece 7. Figure 3 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 with the clamp to move toward the distal end.

[0087] 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, Fig.12 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 receiving 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.

[0088] 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.

[0089] The first transmission structure may be Fig.11The 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 4 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 curved portion of the tape holding groove 22, when it moves toward 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.

[0090] 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 Fig.12As 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.

[0091] In this embodiment, the elastic stopper 63 is preferably as follows Fig.12 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. Fig.12 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.

[0092] 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; Fig.12As 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.

[0093] 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.

[0094] Example 2

[0095] This embodiment uses the driving method of the hemostatic forceps of embodiment 1, comprising the following steps:

[0096] S1. In the initial state, the belt feeding structure is located at the belt feeding initial position, and the firing structure is located at the firing initial position; after the hook portion of the clamp arm hooks the blood vessel to be clamped, the belt feeding structure moves distally, and all the tourniquets in the push belt bin structure move distally. When the belt feeding structure is located at the belt feeding terminal position, the distal end of the tourniquet to be inserted into the clamp is bent to the annular portion along the belt containing groove, and the blood vessel to be clamped is located inside the annular portion.

[0097] S2. The firing structure moves far to the firing end position, so that the distal end of the firing structure snaps onto the annular portion of the tourniquet of the clamp to be inserted, so that the tourniquet of the clamp to be inserted clamps the blood vessel.

[0098] S3, the firing structure moves proximally from the firing end position to the firing initial position, and then the belt feeding structure moves proximally from the belt feeding end position to the belt feeding initial position, and the clamped blood vessel is separated from the jaws formed by the hook portion.

[0099] 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.

[0100] Example 3

[0101] The main difference between this embodiment and embodiment 1 is that:

[0102] The bottom surface of the belt-containing groove is an arc-shaped surface at the far end, and there is no bending surface. The arc-shaped surface extends from the bottom of the hook portion to the top of the hook portion. The direction of the arc-shaped surface is consistent with the direction of the hook portion. The first end of the arc-shaped surface is located at the bottom of the hook portion, and the second end of the arc-shaped surface is located at the top of the hook portion. The tangent direction of the second end of the arc-shaped surface is set toward the bottom of the hook portion. The arc-shaped surface set in this way, on the one hand, is conducive to the bending of the tourniquet along the direction of the hook portion, and on the other hand, it is conducive to the downward bending of the tourniquet to form an annular portion to wrap the blood vessel to be clamped, which can produce a similar effect to the bottom surface of the belt-containing groove in Example 1. However, the arc-shaped surface set as above requires that the hook end of the hook portion is also set toward the bottom of the hook portion.

[0103] The rest is the same as Example 1 and will not be described again here.

[0104] Example 4

[0105] The main difference between this embodiment and embodiment 1 is that:

[0106] The belt bin bottom plate is placed on the clamp arm, the belt receiving groove is located at the far side of the belt bin bottom plate, the proximal bottom surface of the belt receiving groove is coplanar with the belt bin bottom plate, and the proximal end of the belt receiving groove is provided with an opening facing the belt bin; the belt feeding structure pushes the tourniquet away from the belt bin bottom plate and enters the belt receiving groove from the opening of the belt receiving groove. In this way, it is convenient to feed the tourniquet from the belt bin into the belt receiving groove.

[0107] Furthermore, in this embodiment, the tape bin and the tape containing groove are arranged closely, the inner side surface of the left side wall of the tape bin is coplanar with the left side surface of the tape containing groove, and the inner side surface of the right side wall of the tape bin is coplanar with the right side surface of the tape containing groove.

[0108] Preferably, the first mounting groove and the second mounting groove both extend from the first end of the belt-containing groove to the second end of the belt-containing groove. In this way, the tourniquet enters the curved channel when leaving the belt compartment, making the belt feeding more stable, and there is no need to set the elastic guide sheet and the elastic compression sheet 49.

[0109] 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 belt bin structure, a belt feeding structure, a firing structure, 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 the 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 structure 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 belt receiving groove (22) is provided on the clamp arm (2), the proximal end of the belt receiving groove (22) is located in the sleeve (12) and communicates with the space inside the belt bin (42) to form a belt feeding channel, and the distal end of the belt receiving 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 structure is inserted into the sleeve (12), and the belt feeding structure cooperates with the tourniquet (41); the firing structure is inserted into the sleeve (12), and the firing structure cooperates with the curved hook portion (21); During the process of clamping the blood vessel, the tourniquet (41) located at the farthest end of the belt delivery channel is the waiting clamp tourniquet (43), and the belt delivery structure moves far away, pushing all the tourniquets (41) in the belt delivery channel to move far away. When the belt delivery structure is located at the far end position of the belt delivery, the distal end of the waiting clamp tourniquet (43) is bent into a ring-shaped portion along the belt receiving groove (22), and the distal end of the waiting clamp tourniquet (43) extends out of the belt receiving groove (22); the firing structure moves far away to close the ring-shaped portion of the waiting clamp tourniquet (43).

2. The tape bin assembly according to claim 1, characterized in that: The distal end of the bottom surface of the belt-containing groove (22) comprises an arcuate surface (24) and a bent surface (25) connected in sequence, the arcuate surface (24) extending from the bottom of the hook portion (21) to the top of the hook portion (21), the direction of the arcuate surface (24) being consistent with the direction of the hook portion (21), the bent surface (25) being located at the top of the hook portion (21), the direction of the bent surface (25) deviating from the direction of the hook portion (21) and downward, and the tangent direction of the free end of the bent surface (25) being close to the bottom of the hook portion (21).

3. 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), and the firing structure, the belt feeding structure, the belt bin structure and the clamp arm (2) are arranged in sequence from top to bottom in the sleeve (12).

4. The tape bin assembly according to claim 3, characterized in that: The tape bin bottom plate is placed on the clamp arm (2), and the proximal end of the tape containing groove (22) is located below the tape bin (42); the tape containing groove (22) is located on the far side of the tape bin bottom plate, or the proximal end of the tape containing groove (22) partially overlaps with the tape bin bottom plate; During the blood vessel clamping process, when the belt feeding structure is located at the initial position of the belt feeding proximal end, the tourniquet (43) to be inserted into the clamp is located in the belt receiving groove (22), and the belt feeding structure moves distally. The belt feeding structure pushes the tourniquet (41) at the farthest end of the belt bin to leave the bottom plate of the belt bin and sink into the proximal end of the belt receiving groove (22). The belt feeding structure pushes the tourniquet (43) to be inserted into the clamp to move distally along the belt receiving groove (22). When the belt feeding structure is located at the distal end position of the belt feeding structure, the tourniquet (41) at the farthest end of the belt bin completely enters the proximal end of the belt receiving groove (22).

5. The tape bin assembly according to claim 1, characterized in that: A first mounting groove (26) extending along the belt-containing groove (22) is provided on the left side surface at the far end of the belt-containing groove (22), and a second mounting groove (27) is provided on the right side surface of the belt-containing 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 bottom of the second mounting groove (27) via a second resetting member (31); The first clip strip (28) has a first guide surface (32) on the second side portion thereof, extending from the outside of the tape receiving groove (22) to the inside of the tape receiving groove (22); the first guide surface (32) is arranged toward the outside of the tape receiving groove (22); the first guide surface (32) extends from the first end of the first clip strip (28) to the second end of the first clip strip (28); the second clip strip (29) has a second guide surface (33) on the second side portion thereof, extending from the outside of the tape receiving groove (22) to the inside of the tape receiving groove (22); the second guide surface (33) is arranged toward the outside of the tape receiving groove (22); the second guide surface (33) extends from the first end of the second clip strip (29) to the second end of the second clip strip (29); A belt feeding channel for the tourniquet (41) to move forward is formed between the first clamping strip (28) and the bottom of the belt containing groove (22), and between the second clamping strip (29) and the bottom of the belt containing groove (22).

6. The tape bin assembly according to claim 5, characterized in that: The second side portion of the first clamping strip (28) also has a third guide surface (34) extending from the inside of the belt-containing groove (22) to the outside of the belt-containing groove (22), the third guide surface (34) is arranged toward the inside of the belt-containing groove (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) also has a fourth guide surface (35) extending from the inside of the belt-containing groove (22) to the outside of the belt-containing groove (22), the fourth guide surface (35) being arranged toward the inside of the belt-containing groove (22), and the fourth guide surface (35) extending from the first end of the second clamping strip (29) to the second end of the second clamping strip (29).

7. The tape bin assembly according to claim 1, characterized in that: The distal end of the bottom surface of the belt-containing groove (22) comprises an arc-shaped surface (24); The distal end of the firing structure has a snapping head (51) for snapping the annular portion of the tourniquet, and the distal portion of the snapping head (51) has a snapping surface (52) adapted to the arrangement of the arc surface (24); during the firing process, the snapping head (51) moves distally into the hook groove of the curved hook portion (21).

8. The tape bin assembly according to claim 7, characterized in that: The bottom of the snapping head (51) is provided with a groove for the head of the tape feeding piece to pass through.

9. The tape bin assembly according to claim 1, characterized in that: The distal end of the bottom surface of the belt-containing groove (22) is an arcuate surface (24), the arcuate surface (24) extends from the bottom of the hook portion (21) to the top of the hook portion (21), the direction of the arcuate surface (24) is consistent with the direction of the hook portion (21), the first end of the arcuate surface (24) is located at the bottom of the hook portion (21), the second end of the arcuate surface (24) is located at the top of the hook portion (21), and the second end of the arcuate surface (24) is arranged toward the bottom of the hook portion (21).

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

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