Vascular closure device with replaceable closure rod assembly

Abstract

This utility model discloses a vascular closure device with a replaceable closure rod assembly, including a handle, a connecting sleeve, a jaw assembly, and a closure rod assembly. The proximal end of the connecting sleeve is installed in the inner cavity of the handle, and the distal end is connected to the jaw assembly. A push trigger and a jaw closure trigger are connected to the handle. The closure rod assembly is slidably disposed in the connecting sleeve and is linked to the jaw closure trigger. The proximal end of the closure rod assembly has an axial limiting part, and the inner cavity of the handle has a locking part that cooperates with the axial limiting part. The axial limiting part and the locking part are locked together by a detachable elastic buckle structure to achieve quick assembly and disassembly of the closure rod assembly relative to the handle. Through the above method, this utility model can achieve quick assembly and disassembly by hand through an elastic quick-change structure, simplifying the operation process, improving replacement efficiency, allowing for individual replacement of the closure rod assembly, improving parts utilization, reducing maintenance costs, supporting mass production, effectively shortening the cycle, and meeting the needs of industrial mass production.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a vascular closure device with a replaceable closure rod assembly. Background Technology

[0002] A vascular closure device is a medical device commonly used in vascular interventional procedures. It is mainly used to quickly and effectively close the vascular puncture site to reduce the risk of postoperative bleeding and related complications.

[0003] Currently available vascular closure devices on the market have the following drawbacks: The closing rod and the fixing block are mostly welded manually. The connection strength is affected by the fluctuation of the weld quality, resulting in insufficient stability in long-term use and affecting controllability. Manual welding results in long production cycles, low efficiency, and poor dimensional consistency of finished products; The one-piece welded structure also makes the product impossible to disassemble and replace parts. Once a local defect occurs, the entire instrument will be scrapped, resulting in a high defect rate. Fourth, the accumulation of errors during the assembly process further increases production difficulty and costs, and also restricts production efficiency, making it difficult to achieve the goal of cost reduction and efficiency improvement, and unable to meet the needs of large-scale production. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a vascular closure device with a replaceable closure rod assembly. Through the flexible quick-change structure, it can be quickly disassembled and assembled by hand, simplifying the operation process and improving the replacement efficiency. Through the modular design, the closure rod assembly can be replaced individually, improving the utilization rate of parts, reducing maintenance costs, supporting mass production, effectively shortening the cycle, and meeting the needs of industrial mass production.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a vascular closure device with a replaceable closure rod assembly, comprising: a handle, the inner cavity of which is provided with a push-knife trigger and a jaw closure trigger; a connecting sleeve, the proximal end of which is connected to the inner cavity of the handle, and the distal end of which is connected to the jaw assembly; and a closure rod assembly, which is slidably disposed in the connecting sleeve and linked with the jaw closure trigger. The closure rod assembly has an axial limiting part at its proximal end, and the handle cavity has a locking part that cooperates with the axial limiting part. The axial limiting part and the locking part are locked together by a detachable elastic buckle structure to realize the quick assembly and disassembly of the closure rod assembly relative to the handle.

[0006] In a preferred embodiment of the present invention, the closing rod assembly includes a closing rod and a closing spring sleeved on the closing rod. The axial limiting part is a limiting retaining ring disposed at the proximal end of the closing rod. The outer diameter of the limiting retaining ring is larger than the outer diameter of the closing rod, forming a radial flange.

[0007] In a preferred embodiment of the present invention, the locking part is a retaining ring limiting groove disposed in the inner cavity of the handle, and the shape and size of the retaining ring limiting groove are configured to accommodate the limiting retaining ring.

[0008] In a preferred embodiment of the present invention, at least one side of the groove wall of the retaining ring limiting groove is provided with a guide slope for guiding the retaining ring to slide smoothly into the retaining ring limiting groove.

[0009] In a preferred embodiment of the present invention, the elastic buckle structure includes two limiting springs respectively disposed on the front and rear sides of the limiting retaining ring. When the limiting retaining ring is contained within the retaining ring limiting groove, the two limiting springs can elastically clamp and lock the limiting retaining ring.

[0010] In a preferred embodiment of the present invention, both of the limiting springs are accommodated within the retaining ring limiting groove.

[0011] In a preferred embodiment of this utility model, the width of the retaining ring limiting groove is adapted to the sum of the thickness of the retaining ring and the thickness of the two limiting springs in the pressed state, so that when the retaining ring is accommodated and locked, the retaining ring and the limiting springs on both sides are in the pressed state.

[0012] In a preferred embodiment of this utility model, the limiting retaining ring and the closing rod are integrally formed.

[0013] In a preferred embodiment of this utility model, the limiting retaining ring and the closing rod are separate structures, and the limiting retaining ring is connected to the near end of the closing rod by threaded connection or interference fit.

[0014] In a preferred embodiment of the present invention, the elastic buckle structure may further be at least a pair of elastic claws arranged symmetrically. The elastic claws have a locking surface facing the axial limiting part, which is used to generate radial elastic deformation when the axial limiting part is inserted and to restore the deformation after being in place in order to achieve axial locking.

[0015] The beneficial effects of this utility model are as follows: the elastic snap-fit ​​structure of the axial limiting part and the locking part enables quick disassembly and assembly by hand, and replacement can be completed with just a simple push-in or pull-out action, which greatly simplifies the operation process and has significant advantages in emergency or temporary replacement scenarios; the modular design can support the replacement of the closing rod individually, avoiding overall disassembly, improving the utilization rate of parts, and reducing maintenance costs; different models can be accurately adapted, the assembly process is simple, which is conducive to batch assembly, shortens the production cycle, and meets the needs of industrial mass production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of a preferred embodiment of the vascular closure device with a replaceable closure rod assembly of the present invention. Figure 2 This is a schematic diagram of a preferred embodiment of the connection between the closing rod, the limiting retaining ring, and the limiting snap ring of this utility model; Figure 3 yes Figure 1 A magnified view of the structure at point A in the middle; The components in the attached diagram are labeled as follows: 1. Handle; 2. Connecting sleeve; 3. Jaw assembly; 4. Push trigger; 5. Jaw closing trigger; 6. Closing rod; 7. Limiting retaining ring; 8. Retaining ring limiting groove; 9. Limiting snap ring; 10. Guide slope. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] This utility model relates to a preferred embodiment of a vascular closure device with a replaceable closure rod assembly.

[0020] Please see Figure 1-3 The vascular closure device with a replaceable closure rod assembly includes a handle 1, a connecting sleeve 2, a jaw assembly 3, and a closure rod assembly. The proximal end of the connecting sleeve 2 is installed in the inner cavity of the handle 1, and the distal end is connected to the jaw assembly 3. A push-knife trigger 4 and a jaw closure trigger 5 are connected to the handle 1 for the operator to perform corresponding operations.

[0021] The closing lever assembly is slidably disposed within the connecting sleeve 2 and is linked to the jaw closing trigger 5. It includes a closing lever 6 and a closing spring 11 sleeved on the closing lever 6. When the jaw closing trigger is operated, the closing lever assembly slides accordingly, thereby driving the jaw assembly to perform the opening and closing action.

[0022] In order to enable quick assembly and disassembly of the closing rod assembly relative to the handle 1, an axial limiting part is provided at the near end of the closing rod assembly. Correspondingly, a locking part that cooperates with the axial limiting part is provided in the inner cavity of the handle 1. The axial limiting part and the locking part are locked together by a detachable elastic buckle structure.

[0023] In detail, the first part is the axial limiting part, which includes a limiting ring 7 disposed near the end of the closing rod 6. The outer diameter of the limiting ring 7 is larger than the outer diameter of the closing rod 6, forming a radial flange, which can effectively limit the axial displacement of the closing rod assembly.

[0024] Secondly, there is a locking part, which is a retaining ring limiting groove 8 provided in the inner cavity of the handle. The shape and size of the retaining ring limiting groove 8 are configured to accommodate the limiting retaining ring 7, ensuring the stability of the two when they are engaged.

[0025] Furthermore, in order to improve the smoothness of assembly, at least one side of the groove wall of the retaining ring limiting groove 8 may be provided with a guide slope 10, which can guide the retaining ring 7 to slide smoothly into the retaining ring limiting groove 8 during the assembly process, while ensuring that there is no movement after assembly.

[0026] Furthermore, there is an elastic snap-fit ​​structure, which includes two limiting springs 9 respectively disposed on the front and rear sides of the limiting retaining ring 7. When the limiting retaining ring 7 is housed within the retaining ring limiting groove 8, the two limiting springs 9 can elastically clamp and lock the limiting retaining ring 7, achieving reliable fixation. Both limiting springs 9 are integrally housed within the retaining ring limiting groove 9, making the overall limiting structure more compact.

[0027] Furthermore, the width of the retaining ring limiting groove 8 is matched with the sum of the thickness of the retaining ring 7 and the thickness of the two limiting springs 9 in the pressed state. When the retaining ring 7 is accommodated and locked, the retaining ring 7 and the limiting springs 9 on both sides are in a pressed state, ensuring a stable and reliable connection. It also allows for easy and quick disassembly by applying a certain external force to cause the springs to elastically deform when disassembly is required.

[0028] In one embodiment, the limiting retaining ring 7 and the closing rod 6 are integrally formed, which can enhance the overall strength. In another embodiment, the limiting retaining ring 7 and the closing rod 6 are separate structures, with the limiting retaining ring connected to the near end of the closing rod by a threaded connection or interference fit, which facilitates the replacement of limiting retaining rings of different specifications according to actual needs.

[0029] Furthermore, the aforementioned elastic snap-fit ​​structure can also consist of at least one pair of symmetrically arranged elastic claws, each claw having a locking surface facing the axial limiting portion. During the insertion of the axial limiting portion, the elastic claws undergo radial elastic deformation; once the axial limiting portion is in place, the elastic claws return to their original shape, achieving axial locking of the axial limiting portion through the locking surface, thus achieving the same effect of quick assembly and disassembly.

[0030] The disassembly and assembly process of this utility model's vascular closure device with a replaceable closure rod assembly is as follows: Assembly process: The closing spring 11 is sleeved on the closing rod 6. The closing rod assembly is pushed from the far end to the near end of the connecting sleeve 2. When the limiting ring 7 at the near end of the closing rod 6 reaches the position of the retaining ring limiting groove 8 in the inner cavity of the handle 1, the guide slope 10 will guide the limiting ring 7 to slide into the retaining ring limiting groove 8. At this time, the closing spring 11 is in a pre-compressed state, providing the necessary reset force for the jaw assembly 3. At the same time, the limiting springs 9 on both sides will generate elastic deformation to allow the limiting retaining ring 7 to enter. After the limiting retaining ring 7 is fully entered into the retaining ring limiting groove 8, the limiting springs 9 will restore their deformation, automatically spring back and lock into the locking position. At this time, the limiting springs 9 elastically clamp the limiting retaining ring 7 from both sides to form a pressing fit and complete the assembly. Disassembly process: An axial outward pulling force is applied to the closing rod assembly, which causes the limiting spring 9 to undergo elastic deformation, releasing the locking constraint on the limiting retaining ring 7. The pulling force is continued, and the limiting retaining ring 7 slides out of the retaining ring limiting groove 8 along the guide slope 10. During this process, the pre-compressed closing spring 11 is released and removed together, and the closing rod assembly is pulled out from the connecting sleeve 2, completing the quick disassembly.

[0031] The beneficial effects of this utility model of a vascular closure device with a replaceable closure rod assembly are: Through the elastic engagement of the axial limiting part and the locking part, the assembly and disassembly of the closing rod assembly can be completed by simply pushing or pulling it in axially without the aid of tools, realizing quick assembly and disassembly by hand, facilitating the disassembly of the instrument, greatly simplifying the operation process, and making it easy to operate. It has significant advantages, especially in emergency scenarios or when it is necessary to temporarily replace components. When components need to be replaced, there is no need to disassemble the entire instrument. Maintenance can be completed by simply disassembling and replacing the closing rod assembly, avoiding the cumbersome process of overall disassembly and repair, improving parts utilization and reducing maintenance costs. The modular adaptable structure described above ensures that closing rod assemblies of different models and specifications can be precisely assembled and reliably connected. The simplified assembly process significantly reduces reliance on the technical skills of assembly personnel, enables rapid batch assembly, facilitates mass production, effectively shortens the production cycle, reduces production costs, meets the needs of large-scale production, and is especially suitable for industrial mass production scenarios.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vascular closure device with a replaceable closure rod assembly, comprising: The handle has a push-blade trigger and a jaw closing trigger inside its cavity; A connecting sleeve, the proximal end of which is connected to the inner cavity of the handle, and the distal end of which is connected to a jaw assembly; The closing lever assembly is slidably disposed within the connecting sleeve and is linked to the jaw closing trigger; The characteristic feature is that the closure rod assembly is provided with an axial limiting part at its proximal end, and the handle cavity is provided with a locking part that cooperates with the axial limiting part. The axial limiting part and the locking part are locked together by a detachable elastic buckle structure to realize the quick assembly and disassembly of the closure rod assembly relative to the handle.

2. The vascular closure device with a replaceable closure rod assembly according to claim 1, characterized in that, The closing rod assembly includes a closing rod and a closing spring sleeved on the closing rod. The axial limiting part is a limiting retaining ring disposed near the end of the closing rod. The outer diameter of the limiting retaining ring is larger than the outer diameter of the closing rod, forming a radial flange.

3. The vascular closure device with a replaceable closure rod assembly according to claim 2, characterized in that, The locking part is a retaining ring limiting groove provided in the inner cavity of the handle, and the shape and size of the retaining ring limiting groove are configured to accommodate the limiting retaining ring.

4. The vascular closure device with a replaceable closure rod assembly according to claim 3, characterized in that, At least one side of the groove wall of the retaining ring limiting groove is provided with a guide slope to guide the retaining ring to slide smoothly into the retaining ring limiting groove.

5. The vascular closure device with a replaceable closure rod assembly according to claim 3, characterized in that, The elastic buckle structure includes two limiting springs respectively disposed on the front and rear sides of the limiting retaining ring. When the limiting retaining ring is contained within the retaining ring limiting groove, the two limiting springs can elastically clamp and lock the limiting retaining ring.

6. The vascular closure device with a replaceable closure rod assembly according to claim 5, characterized in that, Both of the aforementioned limiting springs are housed within the retaining ring limiting groove.

7. The vascular closure device with a replaceable closure rod assembly according to claim 6, characterized in that, The width of the retaining ring limiting groove is adapted to the sum of the thickness of the retaining ring and the thickness of the two limiting springs in the pressed state, so that when the retaining ring is accommodated and locked, the retaining ring and the limiting springs on both sides are in the pressed state.

8. The vascular closure device with a replaceable closure rod assembly according to claim 2, characterized in that, The limiting retaining ring and the closing rod are integrally formed.

9. The vascular closure device with a replaceable closure rod assembly according to claim 2, characterized in that, The limiting ring and the closing rod are separate structures. The limiting ring is connected to the near end of the closing rod by threaded connection or interference fit.

10. The vascular closure device with a replaceable closure rod assembly according to claim 1, characterized in that, The elastic buckle structure may also be at least one pair of elastic claws arranged symmetrically. The elastic claw has a locking surface facing the axial limiting part, which is used to generate radial elastic deformation when the axial limiting part is inserted and to restore the deformation after it is in place to achieve axial locking.

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