Hemostatic clip

Abstract

The application discloses a hemostatic clip, which comprises a clip head part and a pushing part. The clip head part comprises a sleeve, which is provided with a barrel cavity and a baffle wall. The baffle wall is provided with an exit and entrance which is communicated with the barrel cavity. The pushing part comprises a connecting shaft which is suitable for moving. The front end of the connecting shaft is provided with a convex part which is suitable for being deformed by force and restored without force. When the clip head part is loaded, the convex part is suitable for being deformed by the baffle wall when the sleeve moves backward to be clamped into the barrel cavity from the exit and entrance. When the clip head part is released, the convex part is suitable for being deformed by the baffle wall when the connecting shaft moves backward to be separated from the barrel cavity from the exit and entrance. The application facilitates the separation and connection of the clip head part and is beneficial to the repeated loading of the clip head part.

Description

Technical Field

[0001] This invention relates to a hemostatic clip, belonging to the field of medical device technology. Background Technology

[0002] Currently, hemostatic clips are minimally invasive surgical instruments used for suturing and hemostasis of wounds inside the body. Chinese Patent CN115444492A discloses an endoscopic hemostatic clip device, in which the clip assembly includes an integrally formed clip and a clip seat. To achieve rotation of the clip assembly, an outer tube connector is movably fitted onto a connector, and the connector is movably fitted onto a connecting tube. The connector and the clip seat are designed to be detachably connected. This structure allows rotation of the clip assembly. However, this connection structure requires riveting, making assembly inconvenient and hindering repeated loading of the clip components. Furthermore, due to the large contact area between the connector and the outer tube connector, the rotational resistance of the clip assembly is high, making it 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 that facilitates the separation and connection of the clip components and is conducive to the repeated loading of the clip components.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a hemostatic clip, comprising:

[0005] A chuck assembly, the chuck assembly including a sleeve, the sleeve having a cavity and a baffle wall, the baffle wall having an inlet and outlet communicating with the cavity;

[0006] A pushing component, the pushing component including a connecting shaft adapted for movement, the front end of the connecting shaft having a protrusion adapted to be deformed by applying force and to recover when no force is applied; wherein,

[0007] During the loading of the chuck assembly, the protrusion is adapted to be deformed by the baffle as the sleeve moves backward to engage with the cylinder cavity from the inlet / outlet; during the release of the chuck assembly, i.e. after the protrusion engages with the cylinder cavity, the protrusion is adapted to be deformed by the baffle as the connecting shaft moves backward to disengage from the cylinder cavity from the inlet / outlet.

[0008] Furthermore, in order to enable the protrusion to deform and recover well, the connecting shaft is a hollow structure, and at least the outer wall surface of the front end of the connecting shaft has a contraction groove that passes through the protrusion. The contraction groove makes the protrusion suitable for deformation under force and recovery without force.

[0009] Furthermore, in order to enable the protrusion to deform well, the protrusion has a chamfer on at least one end side in the axial direction.

[0010] Furthermore, after the protrusion is engaged with the cylindrical cavity, the sleeve is adapted to rotate relative to the connecting shaft.

[0011] Furthermore, to facilitate the release of the chuck component, the chuck component also includes a clamp adapted to be housed within the cylinder cavity and adapted to move back and forth within the cylinder cavity;

[0012] The pushing component also includes a docking release assembly, which includes a docking release shaft adapted to enter and exit the cylinder cavity from the inlet / outlet and be connected to the clamp.

[0013] Furthermore, in order to enable the connecting shaft to disengage from the sleeve when the docking release shaft moves backward, the connecting shaft is a hollow structure with a shaft cavity. The docking release shaft is movably inserted through the shaft cavity. The docking release shaft is provided with a pull protrusion, which is adapted to abut against the front end of the connecting shaft when the docking release shaft moves backward, so as to drive the connecting shaft to move backward.

[0014] Furthermore, in order to enable the docking release shaft and the clamp to be properly connected and separated, the front end of the docking release shaft is connected to the rear end of the clamp via a connecting mechanism. The connecting mechanism is adapted to be forced to disengage when the clamp is blocked from moving by the sleeve, thereby separating the docking release shaft and the clamp.

[0015] Furthermore, the connecting mechanism includes:

[0016] A first connecting portion is provided on one of the docking release shaft and the clamp;

[0017] A second connecting portion is provided on the docking release shaft and the remaining one of the clamps; wherein...

[0018] The first connecting part includes a connector head adapted to deform under force and a slot located behind the connector head;

[0019] The second connecting part includes a retaining wall with a retaining hole. After the connecting head passes through the retaining hole, the retaining wall is engaged in the retaining groove.

[0020] Furthermore, to facilitate the disengagement of the first connecting part and the second connecting part, the card wall is provided with a through groove around the card hole to facilitate the disengagement of the first connecting part and the second connecting part.

[0021] Furthermore, the connector includes a cone-shaped head that is smaller at the front and larger at the back, with a deformation groove on the cone-shaped head that facilitates its deformation.

[0022] Furthermore, the rear end of the docking release shaft is provided with a push ring, which is adapted to abut against the rear end of the connecting shaft.

[0023] Furthermore, the docking release assembly also includes a cable, the front end of which is connected to the docking release shaft.

[0024] Furthermore, the pushing component also includes an outer casing assembly, and the connecting shaft is movably connected within the outer casing assembly.

[0025] Furthermore, the rear end of the connecting shaft is provided with a limiting part, and the outer sleeve assembly is provided with a mating part. When the connecting shaft moves forward to the limit position, the limiting part abuts against the mating part.

[0026] Furthermore, the outer casing assembly includes an outer tube and a connecting cap, with the front end of the outer tube connected to the connecting cap.

[0027] After adopting the above technical solution, the present invention has the following beneficial effects:

[0028] 1. The hemostatic clamp of the present invention is provided with a connecting shaft, and the connecting shaft is provided with a protrusion that can deform when force is applied and can recover when no force is applied. The protrusion enters and exits through the inlet and outlet and the sleeve of the clamping component, thereby making the clamping component easy to assemble and allowing the clamping component to be repeatedly clamped.

[0029] 2. After the protrusion is inserted into the sleeve cavity, the sleeve can rotate on the connecting shaft, allowing the chuck assembly to rotate on the connecting shaft, thereby realizing the rotation of the chuck assembly. At the same time, the convex part engages with the chuck assembly, ensuring the connection of the chuck assembly before release. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the hemostatic clip of the present invention in its normal state;

[0031] Figure 2 This is a cross-sectional view of the hemostatic clip of the present invention in the pre-release state;

[0032] Figure 3 This is a cross-sectional view of the hemostatic clip of the present invention after release;

[0033] Figure 4 This is a cross-sectional view of the hemostatic clip of the present invention in the head-changing state. Figure 1 ;

[0034] Figure 5 This is a cross-sectional view of the hemostatic clip of the present invention in the head-changing state. Figure 2 ;

[0035] Figure 6 This is a perspective view of the connecting shaft of the present invention;

[0036] Figure 7 This is a perspective view of the docking release shaft of the present invention; wherein,

[0037] 1. Sleeve; 11. Cylinder; 12. Baffle wall; 12a. Inlet / outlet;

[0038] 2. Connecting shaft; 21. Protrusion; 21a. Chamfer; 22. Shrinkage groove; 23. Limiting part;

[0039] 3. Clamp; 31. Clamping wall; 31a. Clamping hole; 31b. Through groove;

[0040] 4. Limit pin;

[0041] 5. Docking release shaft; 51. Pull-out; 52. Connector; 52a. Deformation groove; 53. Slot;

[0042] 6. Push notification circle;

[0043] 7. Cable;

[0044] 8. Outer tube;

[0045] 9. Connecting cap; 91. Small diameter section; 92. Large diameter section. Detailed Implementation

[0046] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0047] like Figures 1-7 As shown, a hemostatic clip includes:

[0048] The chuck assembly includes a sleeve 1, which has a cavity 11 and a baffle 12. The baffle 12 has an inlet and outlet 12a that communicates with the cavity 11.

[0049] The pushing component includes a movable connecting shaft 2, the front end of which is provided with a protrusion 21 adapted to be deformed by force and to recover when no force is applied; during the loading of the chuck component, the protrusion 21 is adapted to be deformed by the baffle 12 when the sleeve 1 moves backward to be inserted into the cylinder cavity 11 from the inlet 12a; during the release of the chuck component, that is, after the protrusion 21 is inserted into the cylinder cavity 11, the protrusion 21 is adapted to be deformed by the baffle 12 when the connecting shaft 2 moves backward to be disengaged from the cylinder cavity 11 from the inlet 12a.

[0050] Specifically, in order to ensure that the convex portion 21 can deform and recover well, such as Figure 6 As shown, the connecting shaft 2 is a hollow structure that forms a shaft cavity through the shaft. At least the outer wall surface of the front end of the connecting shaft 2 has a shrinkage groove 22 that passes through the protrusion 21. The shrinkage groove 22 makes the protrusion 21 suitable for deformation under force and recovery without force. In this embodiment, multiple shrinkage grooves 22 are provided and are evenly distributed in the circumferential direction of the connecting shaft 2. The number of shrinkage grooves 22 is not limited in this embodiment.

[0051] In order to allow the convex portion 21 to deform well, such as Figure 6 As shown, the convex part 21 has chamfers 21a around both ends in the axial direction. The chamfers 21a allow the baffle wall 12 to effectively compress the convex part 21 when it contacts the convex part 21, causing the convex part 21 to deform and contract, thus passing through the inlet / outlet 12a, and then returning to its original shape after passing through the inlet / outlet 12a. After the convex part 21 is inserted into the cylinder cavity 11, the sleeve 1 is connected to the connecting shaft 2 and can rotate relative to the connecting shaft 2. Specifically, under normal conditions, the diameter of the inlet / outlet 12a is smaller than the diameter of the convex part 21 but larger than the diameter of a certain section of the connecting shaft 2, so that the baffle wall 12 of the sleeve 1 can rotate on that section of the connecting shaft 2.

[0052] To facilitate the release of the chuck components, such as Figures 1-5 As shown, the chuck assembly also includes a clamp 3 adapted to be housed within the cylindrical cavity 11 and adapted to move back and forth within the cylindrical cavity 11; of course, the chuck assembly also includes a limiting pin 4 mounted on the sleeve 1, which limits the clamp 3 when it moves back and forth within the cylindrical cavity 11, thereby realizing the opening or closing of the clamp 3; the pushing component also includes a docking release assembly, which includes a docking release shaft 5, which is adapted to enter and exit the cylindrical cavity 11 from the inlet / outlet 12a and is connected to the clamp 3.

[0053] In order to enable the connecting shaft 2 to disengage from the sleeve 1 when the docking release shaft 5 is moved backward, such as Figures 1-5 As shown, the docking release shaft 5 can be movably inserted into the shaft cavity. The docking release shaft 5 has a protruding pull tab 51, which is adapted to abut against the front end of the connecting shaft 2 when the docking release shaft 5 moves backward, thereby driving the connecting shaft 2 to move backward. Of course, the diameter of most of the docking release shaft 5, except for the pull tab 51, is smaller than the diameter of the shaft cavity, so as to reserve space for the contraction of the protrusion 21.

[0054] In order to ensure that the docking release shaft 5 and the clamp 3 can be properly connected and separated, such as Figures 1-5 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. The connecting mechanism is adapted to be 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.

[0055] Specifically, such as Figures 1-7 As shown, the connecting mechanism can specifically have the following structure, including:

[0056] The first connecting part is provided on the docking release shaft 5;

[0057] A second connecting part is provided on the clamp 3; wherein...

[0058] The first connecting part includes a connector 52 disposed at the front end of the docking release shaft 5 and adapted to be deformed by force, and a slot 53 disposed at the rear of the connector 52;

[0059] The second connecting part includes a retaining wall 31 with a retaining hole 31a disposed on the rear end of the clamp 3. After the connector 52 passes through the retaining hole 31a, the retaining wall 31 is engaged in the retaining groove 53.

[0060] Of course, in some embodiments, the first connecting part may also be disposed on the clamp 3, and the second connecting part may also be disposed on the docking release shaft 5.

[0061] Specifically, in this embodiment, the clamp 3 is made as a single piece.

[0062] To facilitate the separation of the first connecting part and the second connecting part, the retaining wall 31 is provided with a through groove 31b around the retaining hole 31a to facilitate the separation of the first connecting part and the second connecting part. There may be four through grooves 31b around the retaining hole 31a, but it is not limited to this. The through grooves 31b are provided to allow the retaining hole 31a to deform and enlarge its diameter when the first connecting part and the second connecting part are separated, thereby facilitating the separation of the connector 52. On the other hand, under certain circumstances, the wall around the retaining hole 31a may be damaged when subjected to force, thereby allowing the connector 52 to separate along with the damaged wall, thus realizing the separation of the first connecting part and the second connecting part.

[0063] Specifically, such as Figure 7 As shown, the connector 52 includes a cone head that is smaller at the front and larger at the back. A deformation groove 52a is opened on the cone head to facilitate the deformation of the cone head. In this embodiment, the deformation groove 52a can be set as follows: four grooves are arranged to extend radially through the center of the cone head, and the four deformation grooves 52a form a cross-shaped structure.

[0064] Specifically, such as Figure 7 As shown, the rear end of the docking release shaft 5 may also be provided with a push ring 6, which is adapted to abut against the rear end of the connecting shaft 2.

[0065] Specifically, such as Figures 1-5 As shown, the docking release assembly also includes a cable 7, the front end of which is connected to the docking release shaft 5.

[0066] Specifically, such as Figures 1-5 As shown, the pushing component also includes an outer casing assembly, and the connecting shaft 2 is movably connected inside the outer casing assembly.

[0067] The rear end of the connecting shaft 2 is provided with a limiting part 23, and the outer sleeve assembly is provided with a mating part. When the connecting shaft 2 moves forward to the limit position, the limiting part 23 abuts against the mating part.

[0068] The outer sleeve assembly includes an outer tube 8 and a connecting cap 9, with the front end of the outer tube 8 connected to the connecting cap 9. Specifically, the connecting cap 9 can have the following structure: it includes a large-diameter section 92 located at the front and a small-diameter section 91 located at the rear. The outer tube 8 is fixedly sleeved on the small-diameter section 91, and the rear end of the small-diameter section 91 can be a mating part. The limiting part 23 can be mated with the rear end of the small-diameter section 91 to limit the movement. In this embodiment, the limiting part 23 can be a convex ring, and the outer wall of the convex ring can be axially slotted. The outer tube 8 can be a spring tube.

[0069] In this embodiment, Figure 1 The direction of the dashed arrow in the middle is forward, and the opposite direction is backward.

[0070] The procedure for using the hemostatic clip in this embodiment is as follows:

[0071] When it is necessary to load 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 moved forward by the pushing ring 6 until the limiting part 23 engages with the mating part. Then, the sleeve 1 of the clamp component to be loaded is inserted into the docking release shaft 5. Then, the clamp 3 is connected to the docking release shaft 5 through the connecting mechanism. Then, the sleeve 1 is moved backward, and the protrusion 21 passes through the inlet 12a and enters the cylinder cavity 11 to complete the loading.

[0072] When used normally, such as Figures 1-3 As shown, the hemostatic clamp with the clamping head component is pushed forward under the endoscope. The clamp 3 of the clamping head component enters the area to be clamped. Of course, during the process, the clamping head component can be rotated on the connecting shaft 2 by rotating the docking release component, thereby adjusting the clamping direction. When release is needed, the docking release component is moved backward, and the clamp 3 moves together with the docking release shaft 5. The clamp 3 gradually retracts to clamp the area to be clamped during the backward movement. During the backward movement of the docking release component, the pull protrusion 51 on the docking release shaft 5 drives the connecting shaft 2 to move backward together. The connecting shaft 2 disengages from the sleeve 1 through the inlet / outlet 12a. Then, the docking release component is moved backward. Since the rear end of the clamp 3 is blocked by the baffle 12, the front end of the outer sleeve component can also abut against the rear end of the sleeve 1. The docking release shaft 5 disengages from the clamp 3 through the connecting mechanism, thereby causing the entire pushing component to disengage from the clamping head component, leaving the clamping head component inside the human body.

[0073] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely 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 within the protection scope of the present invention.

Claims

1. A hemostatic clip, characterized in that, include: The chuck component includes a sleeve (1), the sleeve (1) having a cavity (11) and a baffle (12), and the baffle (12) having an inlet (12a) communicating with the cavity (11). A pushing component, the pushing component including a connecting shaft (2) adapted to move, the front end of the connecting shaft (2) having a protrusion (21) adapted to be deformed by applying force and to recover when no force is applied; wherein, During the loading of the chuck assembly, the protrusion (21) is adapted to be deformed by the baffle (12) as the sleeve (1) moves backward to engage with the cylinder cavity (11) from the inlet (12a); during the release of the chuck assembly, i.e. after the protrusion (21) engages with the cylinder cavity (11), the protrusion (21) is adapted to be deformed by the baffle (12) as the connecting shaft (2) moves backward to disengage from the cylinder cavity (11) from the inlet (12a). The protrusion (21) has chamfers (21a) on both ends in the axial direction; the chamfers (21a) are provided so that when the baffle (12) contacts it, the baffle (12) squeezes the protrusion (21), causing the protrusion (21) to deform and shrink, thereby passing through the inlet (12a); The chuck assembly also includes a clamp (3) adapted to be housed within the cavity (11) and adapted to move back and forth within the cavity (11); The pushing component further includes a docking release assembly, which includes a docking release shaft (5) adapted to enter and exit the cylinder (11) from the inlet (12a) and be connected to the clamp (3); The connecting shaft (2) is a hollow structure with a shaft cavity. The docking release shaft (5) is movably inserted through the shaft cavity. The docking release shaft (5) is provided with a pull protrusion (51). The pull protrusion (51) is adapted to abut against the front end of the connecting shaft (2) when the docking release shaft (5) moves backward, so as to drive the connecting shaft (2) to move backward. The front end of the docking release shaft (5) is connected to the rear end of the clamp (3) via a connecting mechanism. The connecting mechanism is adapted to be 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).

2. The hemostatic clip according to claim 1, characterized in that, The connecting shaft (2) is a hollow structure. At least the outer wall surface of the front end of the connecting shaft (2) has a contraction groove (22) that passes through the protrusion (21). The contraction groove (22) makes the protrusion (21) suitable for deformation under force and recovery without force.

3. The hemostatic clip according to claim 1, characterized in that, The rear end of the docking release shaft (5) is provided with a push ring (6), which is adapted to abut against the rear end of the connecting shaft (2); And / or the docking release assembly further includes a cable (7), the front end of which is connected to the docking release shaft (5).

4. The hemostatic clip according to claim 1, characterized in that, The connecting mechanism includes: A first connecting portion is provided on one of the docking release shaft (5) and the clamp (3); A second connecting portion is provided on the remaining one of the docking release shaft (5) and the clamp (3); wherein, The first connecting part includes a connector (52) adapted to be deformed under force and a slot (53) located behind the connector (52); The second connecting part includes a card wall (31) with a card hole (31a). After the connector (52) passes through the card hole (31a), the card wall (31) is locked in the card slot (53).

5. The hemostatic clip according to claim 4, characterized in that, The card wall (31) is provided with a through groove (31b) around the card hole (31a) to facilitate the disengagement of the first connecting part and the second connecting part. And / or the connector (52) includes a cone that is smaller at the front and larger at the back, with a deformation groove (52a) on the cone that facilitates the deformation of the cone.

6. The hemostatic clip according to claim 1, characterized in that, The pushing component also includes an outer casing assembly, and the connecting shaft (2) is movably connected inside the outer casing assembly.

7. The hemostatic clip according to claim 6, characterized in that, The rear end of the connecting shaft (2) is provided with a limiting part (23), and the outer sleeve assembly is provided with a mating part. When the connecting shaft (2) moves forward to the limit position, the limiting part (23) abuts against the mating part. And / or the outer casing assembly includes an outer tube (8) and a connecting cap (9), the front end of the outer tube (8) being connected to the connecting cap (9).

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