A left atrial appendage occluder distal shaping auxiliary device and shaping method

Abstract

The invention discloses a left atrial appendage occluder distal shaping auxiliary device and shaping method. The auxiliary device comprises a positioning bolt, a positioning nut and a slot plate. The center of the slot plate is concentrically arranged with the positioning bolt. The positioning bolt is provided with a positioning slot matching the support rod at the distal end of the left atrial appendage occluder in a circumferential direction. A slot corresponding to the positioning slot is provided on the slot plate. A push block is provided in the slot. The push block pushes the support rod into the positioning slot along the direction of the slot. The positioning nut is screwed on the positioning bolt to fix and shape the support rod entering the positioning slot. A positioning adjustment component for adjusting the height of the positioning bolt is provided at the lower end of the positioning bolt. The invention provides a slot corresponding to the positioning slot on the slot plate, and the push block pushes the support rod from the slot into the positioning slot. The positioning is accurate and convenient, and synchronous positioning and fixing of multiple support rods can be realized. The positioning accuracy is high, the positioning effect is good, and the subsequent heat treatment shaping is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of left atrial appendage occluder, and in particular to a left atrial appendage occluder distal shaping auxiliary device and shaping method. Background Art

[0002] When the left atrial appendage occluder is being shaped, the support rod of the occluder needs to be restrained on the positioning bolt for locking, so as to facilitate the subsequent heat treatment and shaping of the occluder. Due to the small structure of the occluder itself and the large number of support rods, it is difficult to accurately restrain the support rod in the positioning groove of the positioning bolt, and the position of the support rod in the positioning groove cannot be guaranteed to be uniform, resulting in low processing efficiency of the left atrial appendage occluder and poor distal shaping quality, which in turn affects the deployment and occluding effect of the occluder. Summary of the invention

[0003] Technical purpose: In view of the difficulty in shaping the distal end of the existing left atrial appendage occluder, which leads to low processing efficiency and affects the quality of distal shaping, the present invention discloses a left atrial appendage occluder distal shaping auxiliary device and shaping method, which can accurately position the support rod limit value in the positioning groove and effectively position, fix and shape the distal end of the left atrial appendage occluder.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A left atrial appendage occluder distal shaping auxiliary device comprises a positioning bolt, a positioning nut and a slot plate, wherein the positioning bolt is concentrically arranged at the center of the slot plate, and the positioning bolt is provided with a positioning slot matching a support rod at the distal end of the left atrial appendage occluder in a circumferential direction, and a slot corresponding to the positioning slot is provided on the slot plate, and a push block is provided in the slot, and the push block pushes the support rod into the positioning slot along the direction of the slot; the positioning nut is screwed onto the positioning bolt to fix and shape the support rod entering the positioning slot; and a positioning adjustment component for adjusting the height of the positioning bolt is provided at the lower end of the positioning bolt.

[0006] Preferably, a positioning hole is provided on the slot plate of the present invention, the lower end of the positioning bolt is in the positioning hole, and the adjusting end of the positioning adjustment assembly is in the positioning hole to support the upper positioning bolt; the positioning adjustment assembly includes an adjusting nut and a positioning rod, the positioning rod is threadedly connected to the adjusting nut, and the adjusting nut is rotated to adjust the height of the upper end of the positioning rod.

[0007] Preferably, the positioning bolt of the present invention includes a threaded positioning section located at the bottom and a guide section located at the top, the diameter of the guide section is smaller than the diameter of the threaded positioning section, the positioning groove is opened on the threaded positioning section, and the transition step formed between the threaded positioning section and the guide section limits the end of the support rod.

[0008] Preferably, the push block of the present invention includes a main push block located above the surface of the slot plate and a positioning push block located in the slot, the upper end of the positioning push block is lower than the surface of the slot plate, and after the support rod is pushed into the positioning slot, the positioning nut descends to lock the end of the support rod.

[0009] Preferably, the present invention provides a base plate for support below the slot plate, the base plate and the slot plate surface correspond in the vertical direction, the base plate and the slot plate are connected and supported by support columns, the lower end of the positioning rod is located inside the base plate and is slidably connected to the base plate along the axial direction.

[0010] The present invention also provides a shaping method based on the above shaping auxiliary device, comprising the steps of:

[0011] S01. Adjust the position of the lower end of the positioning bolt through the positioning adjustment assembly so that the lower end of the positioning bolt is located in the positioning hole and the positioning groove on the positioning bolt corresponds to the clamping groove;

[0012] S02, the end of the support rod at the distal end of the left atrial appendage occluder is placed into the card slot, and the push block pushes the support rod into the positioning slot along the direction of the card slot;

[0013] S03. The positioning nut falls from the upper end of the positioning bolt, restricting the support rod between the positioning nut and the positioning bolt, thereby completing the fixing and shaping of the support rod.

[0014] Preferably, in step S02 of the present invention, the upper end of the positioning push block located in the slot is lower than the plate surface of the slot plate, and after the support rod is pushed into the positioning slot, the positioning push block does not block the falling of the positioning nut.

[0015] Preferably, in step S02 of the present invention, after the support rod enters the positioning groove, the positioning bolt is lifted upward by the positioning adjustment assembly, and the end of the support rod abuts against the transition step above the threaded section of the positioning bolt.

[0016] Beneficial effects: The left atrial appendage occluder distal shaping auxiliary device and shaping method provided by the present invention have the following beneficial effects:

[0017] 1. The present invention provides a card slot corresponding to the positioning slot on the card slot plate, and uses a push block to push the support rod from the card slot into the positioning slot. The positioning is accurate and simple, and multiple support rods can be positioned and fixed synchronously. The positioning accuracy is high, the positioning effect is good, and the subsequent heat treatment is convenient for finalization.

[0018] 2. The positioning bolt of the present invention includes a threaded positioning section and a guide section. After the support rod is restricted in the threaded positioning section, the height of the positioning bolt can be adjusted so that the T-shaped end of the support rod abuts against the transition step to maintain the consistency of the positioning position of the far end of the support rod.

[0019] 3. The upper surface of the positioning push block of the present invention is not higher than the plate surface of the slot plate. After the support rod is pushed to position, the positioning nut can be dropped while maintaining the positioning, and the upper end of the support rod is restricted between the positioning nut and the positioning bolt. The support rod can be positioned and fixed conveniently and quickly, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0021] Figure 1 A three-dimensional diagram of the shaping auxiliary device of the present invention;

[0022] Figure 2 A top view of the shaping auxiliary device of the present invention;

[0023] Figure 3 This is a cross-sectional view along the axial direction of the positioning bolt of the present invention;

[0024] Figure 4 This is a structural diagram of the positioning bolt of the present invention;

[0025] Figure 5 This is a structural diagram of the card slot board of the present invention;

[0026] Figure 6 This is a structural diagram of the push block of the present invention;

[0027] Figure 7 This is an enlarged view of the local details of the support rod of the present invention being pushed into the positioning groove;

[0028] Among them, 1-positioning bolt, 2-positioning nut, 3-slot plate, 4-support rod, 5-positioning slot, 6-slot, 7-push block, 8-positioning adjustment assembly, 9-positioning hole, 10-adjusting nut, 11-positioning rod, 12-threaded positioning section, 13-guide section, 14-main push block, 15-positioning push block, 16-base plate, 17-support column, 18-transition step. DETAILED DESCRIPTION

[0029] The present invention will be described more clearly and completely below by way of a preferred embodiment in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiment.

[0030] like Figure 1-Figure 7The figure shows a left atrial appendage occluder distal shaping auxiliary device disclosed in the present invention, comprising a positioning bolt 1, a positioning nut 2 and a slot plate 3. The center of the slot plate 3 is concentrically arranged with the positioning bolt 1. The positioning bolt 1 is provided with a positioning slot 5 matching the support rod 4 at the distal end of the left atrial appendage occluder in the circumferential direction. A slot 6 corresponding to the positioning slot 5 is provided on the slot plate 3. A push block 7 is provided in the slot 6. The push block 7 pushes the support rod 4 into the positioning slot 5 along the direction of the slot 6; the positioning nut 2 is screwed on the positioning bolt 1 to fix and shape the support rod 4 entering the positioning slot 5; a positioning adjustment component 8 for adjusting the height of the positioning bolt 1 is provided at the lower end of the positioning bolt 1.

[0031] The present invention pushes the support rod along the slot 6 into the positioning slot 5 through the push block 7, and can simultaneously position and fix a plurality of support rods 4, thereby improving the shaping efficiency and accuracy. The positioning adjustment component 8 can achieve distal shaping operations for different types of left atrial appendage occluders by adjusting the height of the positioning bolt.

[0032] Specifically, the slot plate 3 of the present invention is provided with a positioning hole 9, the lower end of the positioning bolt 1 is in the positioning hole 9, and the adjusting end of the positioning adjustment assembly 8 is in the positioning hole 9 to support the upper positioning bolt 1; the positioning adjustment assembly 8 includes an adjusting nut 10 and a positioning rod 11, the positioning rod 11 is screwed with the adjusting nut 10, and the height of the upper end of the positioning rod 11 is adjusted by rotating the adjusting nut 10. The adjusting nut 10 can be set at the lower part of the slot plate 3.

[0033] At the same time, since the support rod 4 is pushed from the card slot 6 into the positioning slot 5 by the push block 7, the position of the support rod 4 in the positioning slot 5 cannot be kept completely uniform, which will cause the length of the support rod 4 to be non-uniform, affecting the occlusion effect after the occluder is deployed. Figure 3 and Figure 4 As shown, the positioning bolt 1 of the present invention includes a threaded positioning section 12 located at the bottom and a guide section 13 located at the top. The diameter of the guide section 13 is smaller than the diameter of the threaded positioning section 12. The positioning groove 5 is opened on the threaded positioning section 12. The transition step 18 formed between the threaded positioning section 12 and the guide section 13 limits the end of the support rod 4. The transition step 18 cooperates with the positioning adjustment component 8. After the support rod 4 is pushed into the positioning groove 5 by the push block 7, the positioning bolt 1 is pushed upward so that the support rod with a T-shaped end is clamped between the positioning grooves 5, and the end of the support rod 4 abuts against the step surface of the transition step 18, so as to ensure that the length of the locked end of the support rod is consistent, avoid movement after positioning and shaping, and fix more securely.

[0034] In order to facilitate the application of thrust to the push block 7 to push the support rod 4, as Figure 6As shown, the push block 7 of the present invention includes a main push block 14 located above the surface of the slot plate 3 and a positioning push block 15 located in the slot 6. The upper end of the positioning push block 15 is lower than the surface of the slot plate 3. After the support rod 4 is pushed into the positioning groove 5, the positioning nut 3 descends to lock the end of the support rod 4. The main push block 14 is on the surface of the slot plate 3, which is convenient for pushing the push block or installing the corresponding driving mechanism.

[0035] In addition, the present invention further provides a bottom plate 16 for support below the slot plate 3. The bottom plate 16 corresponds to the plate surface of the slot plate 3 in the vertical direction. The bottom plate 16 and the slot plate 3 are connected and supported by a support column 17. The lower end of the positioning rod 11 is located in the bottom plate 16 and is slidably connected to the bottom plate 16 along the axial direction, so that the positioning rod 11 can move more smoothly when adjusting the position of the end of the positioning bolt 1.

[0036] The present invention also provides a shaping method based on the above-mentioned left atrial appendage occluder distal shaping auxiliary device, comprising the steps of:

[0037] S01. Adjust the position of the lower end of the positioning bolt through the positioning adjustment assembly so that the lower end of the positioning bolt is located in the positioning hole and the positioning groove on the positioning bolt corresponds to the clamping groove;

[0038] S02, the end of the support rod at the distal end of the left atrial appendage occluder is placed in the card slot, and the push block pushes the support rod into the positioning slot along the direction of the card slot, and the upper end of the positioning push block located in the card slot is lower than the plate surface of the card slot plate. After the support rod is pushed into the positioning slot, the positioning push block does not block the falling of the positioning nut; after the support rod enters the positioning slot, the positioning bolt is pushed upward by the positioning adjustment component, and the end of the support rod abuts against the transition step above the threaded section of the positioning bolt;

[0039] S03. The positioning nut falls from the upper end of the positioning bolt, restricting the support rod between the positioning nut and the positioning bolt, thereby completing the fixing and shaping of the support rod.

[0040] Taking a left atrial appendage occluder with six support rods as an example, the specific fixing and shaping process is described as follows: Figure 1 and Figure 2As shown, the number of the slots 6 corresponds to the number of the support rods, which are arranged at equal intervals of 60° in the circumferential direction. When finalizing the distal end of the occluder, the end height of the positioning rod 11 is adjusted by adjusting the nut 10 so that the lower end of the positioning bolt 1 can be sunk into the positioning hole 4, and then the positioning bolt 1 is inserted so that the positioning slot 5 on the positioning bolt 1 corresponds to the slot 6, and the support rod enters the slot 6 along the outer flared area of ​​the slot 6, and then the push block 7 is pushed to move along the slot 6 so that the support rod 4 enters the positioning slot 5. At this time, the position of the push block 7 is kept stationary to temporarily support the support rod 4. At this time, the end of the support rod 4 is above the transition step 18, and the length Different, rotate the adjustment nut 10, drive the positioning rod 11 to move up, and lift the positioning bolt 1 upward. At the same time, due to the presence of the push block 7, the positioning bolt 1 can rise steadily, and the T-shaped end of the support rod 4 will gradually abut against the step surface of the transition step 18 to complete the positioning of the support rod 4 and keep its fixed length uniform. At this time, the positioning nut 2 enters from the guide section 13 of the positioning bolt 1, and is threadedly connected with the threaded positioning section 12, and the support rod 4 is fixed in the positioning groove 5 together to complete the fixed shaping of the far end of the left atrial appendage occluder. After the push block 7 is retreated, the positioning bolt is taken out, and the far-end structure that has been shaped is subjected to subsequent heat treatment shaping. The push block 7 of the present invention can be driven by manpower or a cylinder, a push rod, etc. with a linear drive capability can be set to push.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A left atrial appendage occluder distal shaping auxiliary device, characterized in that: The invention comprises a positioning bolt (1), a positioning nut (2) and a slot plate (3), wherein the positioning bolt (1) is concentrically arranged at the center of the slot plate (3), the positioning bolt (1) is provided with a positioning groove (5) matching the support rod (4) at the distal end of the left atrial appendage occluder along the circumferential direction, a slot (6) corresponding to the positioning groove (5) is provided on the slot plate (3), a push block (7) is provided in the slot (6), and the push block (7) pushes the support rod (4) into the positioning groove (5) along the direction of the slot (6); the positioning nut (2) is screwed onto the positioning bolt (1) to fix and shape the support rod (4) entering the positioning groove (5); and a positioning adjustment component (8) for adjusting the height of the positioning bolt (1) is provided at the lower end of the positioning bolt (1); The positioning bolt (1) comprises a threaded positioning section (12) at the bottom and a guide section (13) at the top, the diameter of the guide section (13) being smaller than the diameter of the threaded positioning section (12), the positioning groove (5) being provided on the threaded positioning section (12), and a transition step (18) formed between the threaded positioning section (12) and the guide section (13) limiting the end of the support rod (4).

2. A left atrial appendage occluder distal shaping auxiliary device according to claim 1, characterized in that: The slot plate (3) is provided with a positioning hole (9), the lower end of the positioning bolt (1) is located in the positioning hole (9), and the adjusting end of the positioning adjustment component (8) is located in the positioning hole (9) to support the positioning bolt (1) above; the positioning adjustment component (8) comprises an adjusting nut (10) and a positioning rod (11), the positioning rod (11) and the adjusting nut (10) are screwed together, and the height of the upper end of the positioning rod (11) is adjusted by rotating the adjusting nut (10).

3. A left atrial appendage occluder distal shaping auxiliary device according to claim 1, characterized in that: The push block (7) comprises a main push block (14) located above the surface of the slot plate (3) and a positioning push block (15) located in the slot (6). The upper end of the positioning push block (15) is lower than the surface of the slot plate (3). After the support rod (4) is pushed into the positioning groove (5), the positioning nut (2) descends to lock the end of the support rod (4).

4. A left atrial appendage occluder distal shaping auxiliary device according to claim 1, characterized in that: A bottom plate (16) for support is provided below the slot plate (3); the bottom plate (16) corresponds to the plate surface of the slot plate (3) in the vertical direction; the bottom plate (16) and the slot plate (3) are connected and supported by a support column (17); the lower end of the positioning rod (11) is located inside the bottom plate (16) and is slidably connected to the bottom plate (16) along the axial direction.

5. A method for shaping the distal end of a left atrial appendage occluder, using a left atrial appendage occluder distal end shaping auxiliary device according to any one of claims 1 to 4, characterized in that: Includes steps: S01. Adjust the position of the lower end of the positioning bolt through the positioning adjustment assembly so that the lower end of the positioning bolt is located in the positioning hole and the positioning groove on the positioning bolt corresponds to the clamping groove; S02, the end of the support rod at the distal end of the left atrial appendage occluder is placed into the card slot, and the push block pushes the support rod into the positioning slot along the direction of the card slot; S03. The positioning nut falls from the upper end of the positioning bolt, restricting the support rod between the positioning nut and the positioning bolt, thereby completing the fixing and shaping of the support rod.

6. A method for shaping the distal end of a left atrial appendage occluder according to claim 5, characterized in that: In step S02, the upper end of the positioning push block in the slot is lower than the plate surface of the slot plate, and after the support rod is pushed into the positioning slot, the positioning push block does not block the falling of the positioning nut.

7. A method for shaping the distal end of a left atrial appendage occluder according to claim 6, characterized in that: In step S02, after the support rod enters the positioning groove, the positioning bolt is pushed upward by the positioning adjustment assembly, and the end of the support rod abuts against the transition step above the threaded section of the positioning bolt.

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