Processing device for auxiliary preparation of left auricle closing covering film

Abstract

The utility model provides a processing device for assisting in preparing a left auricle closing covering film. The processing device comprises a base assembly, a top film member; a support member; the film pulling pieces are evenly arranged on the bearing piece in the circumferential direction, each film pulling piece comprises a column section and a hook section, the column sections are used for driving a covering film to fall, the hook sections are used for being connected with the covering film, and the lifting mechanism comprises at least two electric push rods and is used for driving the bearing piece to ascend or descend. The utility model aims to adjust the edge of the knitted fabric below the ribbon by using the film drawing piece with uniform weight and by matching with the lifting mechanism to enable the bearing piece to integrally and synchronously ascend or descend, so as to control the surface tension of the film, further effectively control the aperture size of the knitted fabric, avoid thrombus passing caused by overlarge aperture, and improve the production efficiency. And the left auricle closer can be smoothly opened outside the catheter. Therefore, the stability of the performance of the left atrial appendage closer can be greatly improved after the left atrial appendage closer is used for treating the covering film, and further the safety and the effectiveness of an operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a processing device for assisting in preparing a left atrial appendage closure film. Background Art

[0002] The left atrial appendage is a small protruding part of the left atrium, which plays a special role in the cardiac structure. The anatomical structure of the left atrial appendage is very unique, being tubular or sac-like, with many small depressions (called lobules) inside. This structure makes it easy for blood to form vortices or stagnate when flowing through it, especially in the case of irregular heartbeat of the heart. Atrial fibrillation is a common arrhythmia, in which the electrical activity of the atrium becomes very rapid and uncoordinated, resulting in weakened atrial contraction function and decreased pumping function, causing blood to stagnate in the atrium and the left atrial appendage, increasing the risk of thrombus formation. In addition, atrial fibrillation may be accompanied by local or systemic inflammatory reactions, which can activate blood coagulation factors in the blood, increase the viscosity of the blood, and thus promote thrombus formation.

[0003] Given that the left atrial appendage is a high-risk area for thrombus formation, there are many clinical preventive and treatment measures, including anticoagulant therapy and left atrial appendage occlusion. For patients with atrial fibrillation who cannot tolerate long-term anticoagulant drug treatment, a left atrial appendage occluder can be implanted through an interventional operation. A left atrial appendage occluder is a medical device specifically designed to occlude the left atrial appendage, aiming to prevent thrombus from entering the blood circulation from the left atrial appendage and causing stroke. This device usually consists of a metal frame and a film. The left atrial appendage occluder is usually implanted through a minimally invasive catheter-based operation. Under the guidance of X-ray or ultrasound, the device is precisely placed at the entrance of the left atrial appendage. When the device reaches the predetermined position, it unfolds, and the film adheres tightly to the cardiac tissue, and the anchoring mechanism is activated to fix the device.

[0004] With the progress of medical technology, more and more research focuses on improving the design of the left atrial appendage occluder and enhancing the safety and effectiveness of the operation. Preparing a left atrial appendage occluder usually involves highly precise biomedical engineering techniques. Most of the materials are selected as medical-grade materials, such as titanium or polyethylene terephthalate, which have good durability and biocompatibility in the body. The traditional left atrial appendage closure film is formed by shaping textiles. The knitted fabric has high elasticity and ductility and large surface tension, which is a good choice for preparing the left atrial appendage closure film. However, the knitted fabric has a high porosity and large pore size. In order to effectively block thrombus, the pore size needs to be controlled within a certain range. The traditional method for shaping the left atrial appendage closure film is to cover the knitted fabric on the surface of the mold, tie it with a cable tie below the cutting line of the mold, and manually pull the edge of the knitted fabric below the cable tie for adjustment so that there are no wrinkles above the cable tie. However, in this method, the operator cannot control the uniformity of the pulling force, which easily leads to uneven surface tension of the knitted fabric and uneven pore size, so the existing technology has limitations. Summary of the Utility Model

[0005] The present utility model is developed to solve the above problems, and aims to provide a processing device for assisting in the preparation of a left atrial appendage closure film

[0006] The present utility model provides a processing device for assisting in the preparation of a left atrial appendage closure film, having the following characteristics: The base assembly includes a base and a central axis provided on the base. A connecting rod is provided at the top end of the central axis. The top film member includes a connecting section and a top film section. The connecting section is rod-shaped, and a connecting groove is axially formed inside it. The notch of the connecting groove is located on the lower end surface of the connecting section. The diameter of the connecting groove is equal to the diameter of the connecting rod. The top film section is frustum-shaped, and the small-diameter end of the top film section fits with the upper end surface of the connecting section. The supporting member is disc-shaped and is slidably provided on the central axis. A plurality of film pulling members are circumferentially and evenly arranged on the supporting member. Each film pulling member includes a column section and a hook section located above the column section. The column section is used to drive the film to drop, and the hook section is used to connect the film. The lifting mechanism includes at least two electric push rods, and at least two electric push rods are axially and evenly arranged on the base. The top end of each electric push rod is connected to the lower end surface of the supporting member.

[0007] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: The base is disc-shaped, and the central axis is located at the center of the base.

[0008] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: External threads and internal threads that mesh with each other are provided on the outer wall of the connecting rod and the inner wall of the connecting groove.

[0009] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: A through hole is provided at the center of the supporting member. The diameter of the through hole is equal to the diameter of the central axis. A plurality of hemispherical grooves are axially and evenly formed on the hole wall of the through hole, and a ball is provided in each groove.

[0010] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: Limiting grooves are formed on the upper end surface of the supporting member and corresponding to the position of each film pulling member. The diameter of the limiting groove is equal to the diameter of the column section.

[0011] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: The diameter of the connecting section is equal to the diameter of the central axis.

[0012] In the processing device for assisting in the preparation of a left atrial appendage closure film provided by the present utility model, it can also have the following characteristics: The diameter of the small-diameter end of the top film section is equal to the diameter of the connecting section.

[0013] Functions and Effects of the Utility Model

[0014] According to the processing device for assisting in the preparation of a left atrial appendage closing film involved in the present utility model, it aims to adjust the edge of the knitted fabric under the tie strap by using a film pulling member of a unified weight and cooperating with a lifting mechanism to synchronously raise or lower the entire supporting member, thereby controlling the surface tension of the film. Furthermore, it can not only effectively control the pore size of the knitted fabric to avoid the passage of thrombus due to too large pore size, but also ensure the smooth opening of the left atrial appendage occluder outside the catheter. Therefore, after processing the film with the present utility model, the stability of the performance of the left atrial appendage occluder can be greatly improved, and thus the safety and effectiveness of the operation can be enhanced. Description of the Drawings

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the top film member and a part of the central shaft in the present utility model;

[0017] Figure 3 is the cross-sectional view of the supporting member and the central shaft in the present utility model;

[0018] Figure 4 is the structural schematic diagram of the film pulling member in the present utility model.

[0019] Description of the Reference Numerals in the Drawings:

[0020] 10. Base assembly; 11. Base; 12. Central shaft; 13. Connecting rod; 20. Top film member; 21. Connection section; 22. Top film section; 23. Connection groove; 30. Supporting member; 31. Through hole; 32. Hemispherical groove; 33. Ball; 34. Limiting groove; 40. Film pulling member; 41. Column section; 42. Hook section; 50. Lifting mechanism; 51. Electric push rod. Detailed Embodiments

[0021] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the following embodiments will specifically describe the present utility model in conjunction with the drawings.

[0022] Embodiment

[0023] Figure 1 is the structural schematic diagram of the present utility model, Figure 2 is the structural schematic diagram of the top film member and a part of the central shaft in the present utility model, Figure 3 is the cross-sectional view of the supporting member and the central shaft in the present utility model, Figure 4 is the structural schematic diagram of the film pulling member in the present utility model.

[0024] As Figures 1 to 4As shown in the figure, this embodiment provides a processing device for assisting in the preparation of a left atrial appendage closure film, including: a base assembly 10, a film-topping member 20, a supporting member 30, a film-pulling member 40, and a lifting mechanism 50.

[0025] As Figure 1 and Figure 2 As shown in the figure, the base assembly 10 includes a base 11 and a central shaft 12 provided on the base 11. A connecting rod 13 is provided at the top end of the central shaft 12.

[0026] In this embodiment, the base 11 is in a disc shape, and the central shaft 12 is located at the center of the base 11. Among them, the central shaft 12 is fixed at the center of the base 11 by welding.

[0027] In this embodiment, the base 11 is preferably a base made of 316L stainless steel or 304 stainless steel.

[0028] As Figure 1 and Figure 2 As shown in the figure, the film-topping member 20 includes a connecting section 21 and a film-topping section 22. The connecting section 21 is rod-shaped, and a connecting groove 23 is axially formed inside it. The notch of the connecting groove 23 is located on the lower end face of the connecting section 21. The diameter of the connecting groove 23 is equal to the diameter of the connecting rod 13. The film-topping section 22 is in a frustum shape, and the small-diameter end of the film-topping section 22 is attached to the upper end face of the connecting section 21.

[0029] In this embodiment, the film-topping member 20 is preferably a film-topping member made of 316L stainless steel or 316 stainless steel.

[0030] In this embodiment, the diameter of the connecting section 21 is equal to the diameter of the central shaft 12.

[0031] In this embodiment, the diameter of the small-diameter end of the film-topping section 22 is equal to the diameter of the connecting section 21.

[0032] In this embodiment, the film-topping section 22 being in a frustum shape can increase the contact area between the film-topping section 22 and the film fabric, thereby ensuring the stability of the film fabric after being placed on the film-topping member 20.

[0033] In this embodiment, external threads and internal threads that mesh with each other are provided on the outer wall of the connecting rod 13 and the inner wall of the connecting groove 23.

[0034] As Figure 1 and Figure 3 As shown in the figure, the supporting member 30 is in a disc shape, and the supporting member 30 is slidably provided on the central shaft 12. Among them, a through hole 31 is provided at the center of the supporting member 30. The diameter of the through hole 31 is equal to the diameter of the central shaft 12. A plurality of hemispherical grooves 32 are uniformly axially formed on the hole wall of the through hole 31, and a ball 33 is provided in each groove.

[0035] In this embodiment, the supporting member 30 is preferably a supporting member made of polyoxymethylene resin or epoxy resin.

[0036] In this embodiment, the distance between the inner wall of the through hole 31 and the outer wall of the central shaft 12 is equal to the radius of the ball 33.

[0037] In this embodiment, the ball 33 is preferably a ball made of 304 stainless steel.

[0038] In this embodiment, the radius of the hemispherical groove 32 is equal to the radius of the ball 33.

[0039] As Figure 1 and Figure 4 shown, a plurality of film pulling members 40 are arranged uniformly along the circumferential direction on the supporting member 30. Each film pulling member 40 includes a column section 41 and a hook section 42 located above the column section 41. The column section 41 is used to drive the coating film to drop, and the hook section 42 is used to connect the coating film.

[0040] In this embodiment, the number of the film pulling members 40 is preferably 6 or 4.

[0041] In this embodiment, the film pulling member 40 is preferably a film pulling member made of 316 stainless steel or chromium-plated stainless steel.

[0042] In this embodiment, the mass of the film pulling member 40 is preferably 80 g or 100 g.

[0043] As Figure 1 shown, the lifting mechanism 50 includes at least two electric push rods 51. The at least two electric push rods 51 are arranged uniformly along the axial direction on the base 11, and the top end of each electric push rod 51 is connected to the lower end surface of the supporting member 30. Among them, the lifting mechanism 50 further includes a driving motor (not shown in the figure) for driving the electric push rod 51 to operate and electrically connected to the electric push rod 51.

[0044] In this embodiment, the lifting stroke of the electric push rod 51 is greater than the length of the central shaft 12, and the thrust of the plurality of electric push rods 51 is greater than the gravity of the supporting member 30 and the film pulling members 40 thereon.

[0045] When using the utility model to process the film-coated fabric, first, the electric push rod 51 drives the supporting member 30 to rise, so that the supporting member 30 is as close as possible to the top end of the central shaft 12. Then, the film-coated fabric is placed on the top film member 20, and at the same time, a plurality of film pulling members 40 are evenly hung on the edge of the film-coated fabric through the hook segments 42. Next, the electric push rod 51 gradually drives the supporting member 30 to descend, so that during the gradual descent, the film-coated fabric is stretched by the weight of the plurality of film pulling members 40, thereby controlling the surface tension of the film coating and making there be no wrinkles above the cable tie. Finally, the plurality of film pulling members 40 are removed from the film-coated fabric, and then the stretched film-coated fabric is removed from the top film member 20 to complete the processing process of the film-coated fabric.

[0046] Functions and effects of the embodiment

[0047] According to the processing device for assisting in preparing the left atrial appendage closing film involved in the utility model, it aims to adjust the edge of the knitted fabric below the cable tie by using the film pulling members of the same weight and cooperating with the lifting mechanism to make the supporting member rise or fall synchronously as a whole, thereby controlling the surface tension of the film coating. Furthermore, it can not only effectively control the pore size of the knitted fabric and avoid the thrombus passing through due to too large pore size, but also ensure that the left atrial appendage occluder can be smoothly opened outside the catheter. Therefore, after processing the film coating with the utility model, the stability of the performance of the left atrial appendage occluder can be greatly improved, and thus the safety and effectiveness of the operation can be improved.

[0048] The above embodiments are the preferred cases of the utility model and are not used to limit the protection scope of the utility model.

Claims

1. An auxiliary processing device for preparing a left atrial appendage closure film, characterized in that, Comprising: A base component, including a base and a central shaft provided on the base, and a connecting rod provided at the top end of the central shaft. A top film member, including a connecting section and a top film section. The connecting section is rod-shaped, and a connecting groove is axially formed inside it. The notch of the connecting groove is located on the lower end face of the connecting section. The diameter of the connecting groove is equal to the diameter of the connecting rod. The top film section is frustum-shaped, and the small-diameter end of the top film section fits against the upper end face of the connecting section. A supporting member, which is disc-shaped and slidably provided on the central shaft. A plurality of film pulling members, which are evenly arranged circumferentially on the supporting member. Each film pulling member includes a column section and a hook section located above the column section. The column section is used to drive the film to drop, and the hook section is used to connect the film. A lifting mechanism, including at least two electric push rods. At least two electric push rods are evenly arranged axially on the base, and the top end of each electric push rod is connected to the lower end face of the supporting member.

2. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, The base is disc-shaped, and the central shaft is located at the center of the base.

3. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, External threads and internal threads that mesh with each other are provided on the outer wall of the connecting rod and the inner wall of the connecting groove.

4. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, A through hole is provided at the center of the supporting member. The diameter of the through hole is equal to the diameter of the central shaft. A plurality of hemispherical grooves are evenly axially formed on the hole wall of the through hole, and a ball is provided in each groove.

5. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, Limit grooves are formed on the upper end face of the supporting member corresponding to the position of each film pulling member. The diameter of the limit groove is equal to the diameter of the column section.

6. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, The diameter of the connecting section is equal to the diameter of the central shaft.

7. The processing device for assisting in preparing a left atrial appendage closure film according to claim 1, wherein: Among them, The diameter of the small-diameter end of the top film section is equal to the diameter of the connecting section.

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