Hemostatic clamp

Abstract

The hemostatic clip comprises a clip head part and a pushing part, the clip head part comprises a sleeve, the sleeve is provided with a sleeve cavity and a blocking wall, and the blocking wall is provided with an inlet and outlet communicated with the sleeve cavity; the pushing part comprises a connecting shaft suitable for moving, the front end of the connecting shaft is provided with a convex part suitable for applying force to deform and recovering without applying force, and in the process of loading the chuck part, the convex part is suitable for being deformed by the force applied by the blocking wall when the sleeve moves backwards so as to be clamped into the barrel cavity from the inlet and outlet; and in the process of releasing the chuck part, namely after the convex part is clamped into the barrel cavity, the convex part is suitable for being deformed by the force applied by the baffle wall when the connecting shaft moves backwards so as to be separated from the barrel cavity from the inlet and outlet. Separation and connection of chuck components are facilitated, and repeated loading of the chuck components is facilitated.

Description

Technical Field

[0001] The invention relates to a hemostatic clip and belongs to the technical field of medical devices. Background Art

[0002] At present, the hemostatic clip is a minimally invasive surgical instrument used for suturing and hemostasis of wounds in patients. The Chinese patent with publication number CN115444492A discloses an endoscopic hemostatic clipping device, wherein the chuck assembly includes an integrally formed clip and a chuck seat. In order to realize the rotation of the chuck assembly, the outer tube connecting seat is movably mounted on the connecting piece, the connecting piece is movably mounted on the connecting pipe, and the connecting piece and the chuck seat are designed to be detachably connected. The rotation of the chuck assembly is realized by this structural method, but this connection structure requires riveting operation, which is inconvenient to assemble and not conducive to repeated loading of the chuck components; in addition, due to the large contact area between the connecting piece and the outer tube connecting seat, the rotation resistance of the chuck assembly is large, which is inconvenient to use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a hemostatic clip which facilitates the separation and connection of the clamp components and is conducive to the repeated loading of the clamp components.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a hemostatic clip, comprising: A chuck component, the chuck component includes a sleeve, the sleeve is provided with a barrel cavity and a retaining wall, the retaining wall is provided with an inlet and outlet communicating with the barrel cavity; A pushing component, the pushing component comprises a connecting shaft suitable for movement, the front end of the connecting shaft is provided with a convex portion suitable for applying force to deform and not applying force to restore; wherein, When the chuck component is being loaded, the protrusion is suitable for being deformed by the retaining wall when the sleeve moves backward so as to be stuck into the barrel cavity from the entrance and exit; when the chuck component is being released, that is, after the protrusion is stuck into the barrel cavity, the protrusion is suitable for being deformed by the retaining wall when the connecting shaft moves backward so as to be separated from the entrance and exit and exit the barrel cavity.

[0005] Furthermore, in order to enable the protrusion to deform and recover well, the connecting shaft is a hollow structure, and a contraction groove passing through the protrusion is opened on the outer wall surface of at least the front end of the connecting shaft, and the contraction groove makes the protrusion suitable for deformation by force and recovery without force.

[0006] Furthermore, in order to enable the protrusion to deform well, at least one end side of the protrusion in the axial direction is provided with a chamfer.

[0007] Furthermore, after the protrusion is inserted into the barrel cavity, the sleeve is suitable for rotating relative to the connecting shaft.

[0008] Further, in order to facilitate the release of the chuck component, the chuck component also includes a clamp adapted to be accommodated in the barrel cavity and adapted to move forward and backward in the barrel cavity; The pushing component further comprises a docking release assembly, wherein the docking release assembly comprises a docking release shaft, wherein the docking release shaft is adapted to enter and exit the barrel cavity from an entrance and an exit and is connected to the clamp.

[0009] Furthermore, in order to be able to drive the connecting shaft to disengage from the sleeve when the docking release shaft is moved backward, the connecting shaft is a hollow structure provided with an axial cavity, and the docking release shaft is movably inserted into the axial cavity. A pull protrusion is provided on the docking release shaft, and the pull protrusion is suitable for abutting against the front end of the connecting shaft when the docking release shaft moves backward to drive the connecting shaft to move backward.

[0010] Furthermore, in order to enable the docking release shaft and the clamp to be well connected and separated, the front end of the docking release shaft is connected to the rear end of the clamp via a connecting mechanism, and the connecting mechanism is suitable for being forced to disengage when the clamp is blocked from moving by the sleeve, thereby separating the docking release shaft and the clamp.

[0011] Further, the connecting mechanism comprises: a first connection portion disposed on one of the docking release shaft and the clamp; a second connection portion disposed on the docking release shaft and the remaining one of the clamps; wherein, The first connecting portion includes a connecting head suitable for applying force and deformation and a slot arranged behind the connecting head; The second connecting portion includes a clamping wall with a clamping hole. After the connecting head passes through the clamping hole, the clamping wall is clamped in the clamping slot.

[0012] Furthermore, in order to facilitate the separation of the first connecting part and the second connecting part, the clamping wall is provided with a through groove around the clamping hole to facilitate the separation of the first connecting part and the second connecting part.

[0013] Furthermore, the connecting head comprises a cone head which is smaller at the front and larger at the rear, and a deformation groove which is conducive to the deformation of the cone head is formed on the cone head.

[0014] Furthermore, a push ring is provided at the rear end of the docking release shaft, and the push ring is suitable for abutting against the rear end of the connecting shaft.

[0015] Furthermore, the docking release assembly also includes a cable, and the front end of the cable is connected to the docking release shaft.

[0016] Furthermore, the pushing component also includes a jacket assembly, and the connecting shaft is movably connected in the jacket assembly.

[0017] Furthermore, a limiting portion is provided at the rear end of the connecting shaft, and a matching portion is provided in the outer sleeve assembly. When the connecting shaft moves forward to an extreme position, the limiting portion abuts against the matching portion.

[0018] Furthermore, the outer sleeve assembly includes an outer tube and a connecting cap, and the front end portion of the outer tube is connected to the connecting cap.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects: 1. The hemostatic clip of the present invention is provided with a connecting shaft, on which a convex portion is provided which can be deformed when force is applied and can be restored when no force is applied, and the convex portion is connected or separated with the sleeve of the clamping part through the inlet and outlet of the convex portion, so that the clamping part is easy to assemble and the clamping part can be repeatedly clamped; 2. After the protrusion is installed into the barrel of the sleeve, the sleeve can rotate on the connecting shaft, so that the chuck component can rotate on the connecting shaft, thereby realizing the rotation of the chuck component. At the same time, the chuck component is clamped by the protrusion to ensure the connection of the chuck component before release. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural cross-sectional view of the hemostatic clip of the present invention in a normal state; Figure 2 It is a structural cross-sectional view of the hemostatic clip of the present invention in a pre-release state; Figure 3 It is a structural cross-sectional view of the hemostatic clip of the present invention after being released; Figure 4 The structure of the hemostatic clip of the present invention is cut away in the head-changing state. Figure 1 ; Figure 5 The structure of the hemostatic clip of the present invention is cut away in the head-changing state. Figure 2 ; Figure 6 A three-dimensional diagram of a connecting shaft of the present invention; Figure 7 It is a stereoscopic diagram of the docking release shaft of the present invention; wherein, 1. sleeve; 11. barrel cavity; 12. retaining wall; 12a. inlet and outlet; 2. connecting shaft; 21. convex part; 21a. chamfer; 22. contraction groove; 23. limiting part; 3. Clamp; 31. Clamp wall; 31a. Clamp hole; 31b. Through slot; 4. Limit pin; 5. docking release shaft; 51. pull protrusion; 52. connector; 52a. deformation groove; 53. clamping groove; 6. Push circle; 7. Cable; 8. External management; 9. Connecting cap; 91. Large diameter section; 92. Small diameter section. DETAILED DESCRIPTION

[0021] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0022] like Figures 1 to 7 As shown, a hemostatic clip comprises: The chuck component includes a sleeve 1, the sleeve 1 is provided with a barrel cavity 11 and a baffle wall 12, and the baffle wall 12 is provided with an inlet and outlet 12a connected to the barrel cavity 11; The pushing component includes a connecting shaft 2 suitable for movement, and the front end portion of the connecting shaft 2 is provided with a convex portion 21 suitable for applying force to deform and not applying force to restore; when in the process of loading the chuck component, the convex portion 21 is suitable for being deformed by the blocking wall 12 when the sleeve 1 moves backward so as to be stuck into the barrel cavity 11 from the entrance and exit 12a; when in the process of releasing the chuck component, that is, after the convex portion 21 is stuck in the barrel cavity 11, the convex portion 21 is suitable for being deformed by the blocking wall 12 when the connecting shaft 2 moves backward so as to be separated from the barrel cavity 11 from the entrance and exit 12a.

[0023] Specifically, in order to enable the convex portion 21 to deform and recover well, as shown in FIG. Figure 6 As shown, the connecting shaft 2 is a hollow structure that penetrates axially to form an axial cavity. A contraction groove 22 that passes through the convex portion 21 is formed on the outer wall surface of at least the front end portion of the connecting shaft 2. The contraction groove 22 makes the convex portion 21 suitable for deformation under force and recovery without force. In this embodiment, a plurality of contraction grooves 22 are provided and are evenly distributed in the circumferential direction of the connecting shaft 2. The number of contraction grooves 22 is not limited in this embodiment.

[0024] In order to make the protrusion 21 deform well, Figure 6 As shown, both ends of the convex part 21 in the axial direction are provided with chamfers 21a in a circumferential circle. The setting of the chamfers 21a enables the retaining wall 12 to well squeeze the convex part 21 when the retaining wall 12 contacts it, so that the convex part 21 can be deformed and contracted, thereby passing through the inlet and outlet 12a, and can be restored after passing through the inlet and outlet 12a; after the convex part 21 is inserted into the barrel cavity 11, the sleeve 1 is connected to the connecting shaft 2 and can rotate relative to the connecting shaft 2; specifically, in a normal state, the diameter of the inlet and outlet 12a is smaller than the diameter of the convex part 21 and larger than the diameter of a certain section of the connecting shaft 2, so that the retaining wall 12 of the sleeve 1 can rotate on the section of the connecting shaft 2 in cooperation.

[0025] To facilitate the release of the chuck components, such as Figures 1 to 5As shown, the chuck component also includes a clamp 3 suitable for being accommodated in the barrel cavity 11 and suitable for moving back and forth in the barrel cavity 11; of course, the chuck component also includes a limit pin 4 installed on the sleeve 1, and the clamp 3 is limited by the limit pin 4 when moving back and forth in the barrel cavity 11, thereby realizing the opening or closing of the clamp 3; the pushing component also includes a docking release assembly, and the docking release assembly includes a docking release shaft 5, which is suitable for entering and exiting the barrel cavity 11 from the entrance and exit 12a and is connected to the clamp 3.

[0026] In order to be able to drive the connecting shaft 2 out of the sleeve 1 when the docking release shaft 5 is moved backward, Figures 1 to 5 As shown, the docking release shaft 5 can be movably arranged on the shaft cavity, and a pull protrusion 51 protruding from the docking release shaft 5 is provided on the docking release shaft 5, and the pull protrusion 51 is suitable for abutting against the front end of the connecting shaft 2 when the docking release shaft 5 moves backward to drive the connecting shaft 2 to move backward. Of course, the diameter of most of the docking release shaft 5 except the pull protrusion 51 is smaller than the diameter of the shaft cavity, so as to reserve a shrinking space for the protrusion 21.

[0027] In order to enable the docking release shaft 5 and the clamp 3 to be well connected and separated, as Figures 1 to 5 As shown, the front end of the docking release shaft 5 can be connected to the rear end of the clamp 3 through a connecting mechanism, and the connecting mechanism is suitable for being forced to disengage when the clamp 3 is blocked from moving by the sleeve 1, thereby separating the docking release shaft 5 and the clamp 3.

[0028] Specifically, Figures 1 to 7 As shown, the connection mechanism may specifically be the following structure, including: A first connecting portion provided on the docking release shaft 5; A second connecting portion is provided on the clamp 3; wherein, The first connection part includes a connection head 52 disposed at the front end of the docking release shaft 5 and adapted to be deformed by applying force, and a clamping groove 53 disposed behind the connection head 52; The second connecting portion includes a clamping wall 31 provided on the rear end of the clamp 3 and having a clamping hole 31 a . After the connector 52 passes through the clamping hole 31 a , the clamping wall 31 is clamped in the clamping groove 53 .

[0029] Of course, in some embodiments, the first connecting portion may also be provided on the clamp 3 , and the second connecting portion may also be provided on the docking release shaft 5 .

[0030] Specifically, in this embodiment, the clamp 3 is made in one piece.

[0031] In order to facilitate the disengagement of the first connecting part and the second connecting part, the card wall 31 is provided with through grooves 31b around the card hole 31a to facilitate the disengagement of the first connecting part and the second connecting part; the through grooves 31b can be provided with four around the card hole 31a, but are not limited to this. The provision of the through grooves 31b is, on the one hand, to enable the card hole 31a to deform and expand the aperture when the first connecting part and the second connecting part are disengaged, thereby facilitating the disengagement of the connecting head 52; on the other hand, at certain times, the wall around the card hole 31a can be destroyed when subjected to force, so that the connecting head 52 can be disengaged together with the destroyed wall, thereby realizing the separation of the first connecting part and the second connecting part.

[0032] Specifically, Figure 7 As shown, the connecting head 52 includes a cone head which is small in front and large in the back, and a deformation groove 52a is formed on the cone head to facilitate the deformation of the cone head. In this embodiment, the deformation groove 52a can be arranged as follows: it is radially extended through the center of the cone head to form four grooves, and the four deformation grooves 52a form a cross structure.

[0033] Specifically, Figure 7 As shown, the rear end of the docking release shaft 5 may also be provided with a push ring 6, and the push ring 6 is suitable for abutting against the rear end of the connecting shaft 2.

[0034] Specifically, Figures 1 to 5 As shown, the docking release assembly further includes a cable 7 , the front end of which is connected to the docking release shaft 5 .

[0035] Specifically, Figures 1 to 5 As shown, the pushing component also includes a jacket assembly, and the connecting shaft 2 is movably connected in the jacket assembly.

[0036] A limiting portion 23 is provided at the rear end of the connecting shaft 2, and a matching portion is provided in the outer sleeve assembly. When the connecting shaft 2 moves forward to the limit position, the limiting portion 23 abuts against the matching portion.

[0037] The outer sleeve assembly includes an outer tube 8 and a connecting cap 9, and the front end of the outer tube 8 is connected to the connecting cap 9; specifically, the connecting cap 9 can be specifically the following structure: it includes a large-diameter section 91 located in the front and a small-diameter section 92 located in the rear, the outer tube 8 is fixedly sleeved on the small-diameter section 92, the rear end of the small-diameter section 92 can be specifically a matching part, and the limiting part 23 can specifically cooperate with the rear end of the small-diameter section 92 to limit; in this embodiment, the limiting part 23 can be specifically a convex ring, and the outer wall of the convex ring can be axially grooved; the outer tube 8 can be specifically a spring tube.

[0038] In this embodiment, Figure 1 The dotted arrow direction is forward, and the opposite direction is backward.

[0039] The use process of the hemostatic clip of this embodiment is as follows: When you need to load the chuck components, such as Figure 4 , 5 As shown, the docking release assembly is pushed forward. During the pushing process, the connecting shaft 2 is driven forward by the pushing ring 6 to move to the limit portion 23 to cooperate with the matching portion, and then the sleeve 1 of the chuck component to be loaded is inserted into the docking release shaft 5, and then the clamp 3 is connected to the docking release shaft 5 through the connecting mechanism, and then the sleeve 1 is moved backward, and the protrusion 21 passes through the entrance 12a into the barrel cavity 11 to complete the loading; When used normally, such as Figures 1 to 3 As shown, the hemostatic clamp loaded with the chuck component is pushed forward under the endoscope, and the clamp 3 of the chuck component enters the part to be clamped. Of course, the chuck component can be rotated on the connecting shaft 2 by rotating the docking release component during the process, so as to adjust the clamping direction; when release is required, the docking release component is moved backward, and the clamp 3 moves along with the docking release shaft 5. The clamp 3 gradually contracts during the backward movement to clamp the part to be clamped. In the process of moving the docking release component backward, the pulling protrusion 51 on the docking release shaft 5 drives the connecting shaft 2 to move backward together, and the connecting shaft 2 is separated from the sleeve 1 through the entrance and exit 12a, and then the docking release component is moved backward. Since the rear end of the clamp 3 is blocked by the retaining wall 12, of course, at this time, the front end of the outer sleeve component can also abut against the rear end of the sleeve 1, and the docking release shaft 5 is separated from the clamp 3 through the connecting mechanism, so that the pushing component is separated from the chuck component as a whole, and the chuck component remains in the human body.

[0040] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hemostatic clip, characterized in that: include: A chuck component, the chuck component comprising a sleeve (1), the sleeve (1) being provided with a barrel cavity (11) and a retaining wall (12), the retaining wall (12) being provided with an inlet and outlet (12a) communicating with the barrel cavity (11); A pushing component, the pushing component comprising a connecting shaft (2) suitable for movement, the front end of the connecting shaft (2) being provided with a convex portion (21) suitable for applying force to deform and not applying force to restore; wherein: When the chuck component is being loaded, the protrusion (21) is adapted to be deformed by the force exerted by the retaining wall (12) when the sleeve (1) moves backwards so as to be inserted into the barrel cavity (11) from the entrance (12a); when the chuck component is being released, that is, after the protrusion (21) is inserted into the barrel cavity (11), the protrusion (21) is adapted to be deformed by the force exerted by the retaining wall (12) when the connecting shaft (2) moves backwards so as to be separated from the entrance (12a) and out of the barrel cavity (11).

2. The hemostatic clip according to claim 1, characterized in that: The connecting shaft (2) is a hollow structure, and a contraction groove (22) passing through the convex portion (21) is formed on the outer wall surface of at least the front end portion of the connecting shaft (2), wherein the contraction groove (22) enables the convex portion (21) to be deformed when force is applied and to be restored when no force is applied.

3. The hemostatic clip according to claim 1, characterized in that: The convex portion (21) is provided with a chamfer (21a) on at least one end side in the axial direction.

4. The hemostatic clip according to claim 1, characterized in that: The chuck component further comprises a clamp (3) adapted to be accommodated in the barrel cavity (11) and adapted to move forward and backward in the barrel cavity (11); The pushing component also includes a docking release assembly, which includes a docking release shaft (5). The docking release shaft (5) is suitable for entering and exiting the barrel cavity (11) from the entrance and exit (12a) and is connected to the clamp (3).

5. The hemostatic clip according to claim 4, characterized in that: The connecting shaft (2) is a hollow structure provided with an axis cavity, the docking release shaft (5) is movably arranged on the axis cavity, and a pulling protrusion (51) is provided on the docking release shaft (5), and the pulling protrusion (51) is suitable for abutting against the front end of the connecting shaft (2) when the docking release shaft (5) moves backward to drive the connecting shaft (2) to move backward; and / or the rear end of the docking release shaft (5) is provided with a push ring (6), the push ring (6) being suitable for abutting against the rear end of the connecting shaft (2); And / or the docking release assembly further comprises a pull cable (7), the front end of the pull cable (7) being connected to the docking release shaft (5).

6. The hemostatic clip according to claim 4, characterized in that: The front end of the docking release shaft (5) is connected to the rear end of the clamp (3) via a connecting mechanism, and the connecting mechanism is suitable for being forced to disengage when the clamp (3) is blocked from moving by the sleeve (1), thereby separating the docking release shaft (5) and the clamp (3).

7. The hemostatic clip according to claim 6, characterized in that: The connecting mechanism comprises: A first connecting portion provided on one of the docking release shaft (5) and the clamp (3); A second connecting portion is provided on the docking release shaft (5) and the remaining one of the clamps (3); wherein, The first connection portion comprises a connection head (52) suitable for applying force to deform, and a clamping groove (53) provided behind the connection head (52); The second connecting portion comprises a clamping wall (31) with a clamping hole (31a), and after the connecting head (52) passes through the clamping hole (31a), the clamping wall (31) is clamped in the clamping groove (53).

8. The hemostatic clip according to claim 7, characterized in that: The clamping wall (31) is provided with a through groove (31b) around the clamping hole (31a) to facilitate the separation of the first connecting part and the second connecting part; And / or the connecting head (52) comprises a cone head which is smaller at the front and larger at the rear, and a deformation groove (52a) is formed on the cone head which is conducive to deformation of the cone head.

9. The hemostatic clip according to claim 1, characterized in that: The pushing component also includes a jacket component, and the connecting shaft (2) is movably connected in the jacket component.

10. The hemostatic clip according to claim 9, characterized in that: A limiting portion (23) is provided at the rear end of the connecting shaft (2), and a matching portion is provided in the outer sleeve assembly, and when the connecting shaft (2) moves forward to an extreme position, the limiting portion (23) abuts against the matching portion; And / or the outer sleeve assembly comprises an outer tube (8) and a connecting cap (9), and the front end of the outer tube (8) is connected to the connecting cap (9).

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