Method for manufacturing a clamping device

Abstract

The present invention discloses a manufacturing method of a clamping device, which includes the following steps: cutting, cutting a profile according to a predetermined pattern to form a blank having two first clamping parts and two second clamping parts, and removing the cut waste; setting a connecting part, processing a threaded hole or a through hole in the center of the blank, or connecting an additional connecting device in the center of the blank; heat setting, extruding the two first clamping parts into a U-shape through a prefabricated mold, and stretching the two second clamping parts into a preset V-shape, and then placing the blank into a heat setting device for heat forming treatment to form a body. In this way, the blank is formed by cutting directly on the profile, and then a connecting device is set on the blank or a threaded hole or a through hole is directly processed on the blank, and finally the body is formed by heat setting. The whole process is simple, the structure of the clamping device is simple, and the production cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of valve clamping devices, and in particular to a method for manufacturing a clamping device. Background Art

[0002] Heart valve disease is a common heart disease. Aortic valve, mitral valve and tricuspid valve regurgitation are the most common heart valve diseases, and the incidence has shown a clear upward trend in recent years. Its causes can be divided into rheumatic changes, degenerative changes, congenital malformations, ischemic necrosis, infection or trauma, etc., which affect the normal flow of blood, thereby causing abnormal heart function and ultimately leading to heart failure. With the aging of the population, senile valvular diseases and valvular lesions caused by coronary heart disease and myocardial infarction are becoming more and more common. The treatment of heart valve diseases with minimally invasive interventional devices has been a research hotspot in recent years. These devices are based on the principle of surgical edge-to-edge suture technology.

[0003] The valve clamping devices currently used in clinical practice have complex mechanical structures, complex manufacturing processes, many manufacturing steps, are time-consuming and labor-intensive, and have high production costs. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for manufacturing a clamping device, which is manufactured by cutting and heat setting, etc., with a simple production process, fewer processes, a simple mechanical structure, and low production cost.

[0005] A method for manufacturing a clamping device according to an embodiment of the present invention comprises the following steps:

[0006] Cutting: cutting the profile according to a predetermined pattern to form a blank having two first clamping parts and two second clamping parts, and removing the waste material produced by cutting;

[0007] Providing a connection portion, machining a threaded hole or a through hole in the center of the blank, or connecting an additional connection device in the center of the blank;

[0008] Heat setting: the two first clamping parts are squeezed into a U shape through a prefabricated mold, and the two second clamping parts are stretched into a preset V shape, and then the blank is placed in a heat setting device for heat forming treatment to form a body.

[0009] A manufacturing method of a clamping device according to an embodiment of the present invention has at least the following beneficial effects: a blank is formed by directly cutting on the profile, a connecting device is then provided on the blank or a threaded hole or a through hole is directly processed on the blank, and finally a main body is formed by heat setting. The whole process is simple, the structure of the clamping device is simple, and the production cost is low.

[0010] According to some embodiments of the present invention, in the cutting step, the profile may be a plate or a tube.

[0011] According to some embodiments of the present invention, when the profile is a plate material, in the step of setting the connection part, the connection part is set in a manner of machining the threaded hole or the through hole in the center of the blank; when the profile is a pipe, in the step of setting the connection part, the connection part is set in a manner of connecting an additional connection device in the center of the blank.

[0012] According to some embodiments of the present invention, when the profile is a plate, it also includes a bending step, in which both sides of the first clamping part are bent into inclined stabilizing plates through a prefabricated mold or a bending machine, so as to enable the first clamping part to be clamped more firmly on the valve.

[0013] According to some embodiments of the present invention, when the profile is a pipe, the connection method between the connecting device and the blank is welding, threaded connection or clamping.

[0014] According to some embodiments of the present invention, the two first clamping portions and the two second clamping portions are symmetrically arranged.

[0015] According to some embodiments of the present invention, the material of the profile is nickel-titanium alloy.

[0016] According to some embodiments of the present invention, between the cutting step and the connecting portion setting step, there is also a step of processing anchor spikes, in which a cutting device is used to cut the inner side of the first clamping portion, and one end of the cut portion is lifted to form a plurality of anchor spikes inclined inwardly.

[0017] According to some embodiments of the present invention, a film coating step is further included after the heat setting step, in which a film is coated on the outside of the body by sewing or heat fusion.

[0018] According to some embodiments of the present invention, the material of the film is polyester or polytetrafluoroethylene.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of a clamping device according to a first embodiment of the present invention;

[0022] Figure 2 for Figure 1The schematic diagram of the structure of the clamping device during the heat setting process shown;

[0023] Figure 3 A schematic diagram of a blank of a clamping device according to a first embodiment of the present invention (using a plate);

[0024] Figure 4 It is a schematic structural diagram of a clamping device according to a first embodiment of the present invention (provided with anchor thorns);

[0025] Figure 5 A front view of a clamping device according to a first embodiment of the present invention;

[0026] Figure 6 This is a blank diagram of a clamping device according to a second embodiment of the present invention (using a tube);

[0027] Figure 7 for Figure 6 The forming process diagram of the blank shown;

[0028] Figure 8 is a schematic structural diagram of a clamping device according to a second embodiment of the present invention;

[0029] Fig. 9 is a schematic structural diagram of a clamping device according to a third embodiment of the present invention;

[0030] Fig.10 is a schematic structural diagram of a clamping device according to a fourth embodiment of the present invention;

[0031] Fig.11 A schematic diagram of a process of loading a clamping device in a conveying device according to an embodiment of the present invention;

[0032] Fig.12 It is a structural schematic diagram of a clamping device of a fifth embodiment of the present invention (coating film);

[0033] Fig.13 for Fig.12 Schematic diagram of the film shown being installed in front of the clamping device.

[0034] Main body 100, first clamping portion 110, second clamping portion 120, guide surface 130, stabilizing plate 140, threaded hole 150, anchor thorn 160;

[0035] Film 200;

[0036] Conveying device 300;

[0037] Valve 400. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, "several" means one or more, "more" means more than several, "greater than", "less than", "exceed", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0042] Reference Figures 1 to 3 According to an embodiment of the present invention, a method for manufacturing a clamping device comprises the following steps:

[0043] Cutting, reference Figure 3 , cutting the profile according to the predetermined pattern to form a blank having two first clamping parts 110 and two second clamping parts 120, and removing the waste material produced by cutting;

[0044] Set the connection part, refer to Figure 1 , a thread 150 or a through hole is machined in the center of the blank, or an additional connecting device is connected in the center of the blank;

[0045] Heat setting, see Figure 2 The two first clamping parts 110 are squeezed into a U-shape through a prefabricated mold, and the two second clamping parts 120 are stretched into a preset V-shape. Then, the blank is placed in a heat setting device for heat forming treatment to form the main body 100.

[0046] A manufacturing method of a clamping device according to an embodiment of the present invention has at least the following beneficial effects: a blank is formed by directly cutting on a profile, a connecting device is arranged on the blank or a threaded hole 150 or a through hole is directly processed on the blank, and finally a main body 100 is formed by heat setting. The whole process is simple, the structure of the clamping device is simple, and the production cost is low.

[0047] According to some embodiments of the present invention, in the cutting step, the profile may be as follows: Figure 3 The plate shown or Figure 6 The tubing shown, whether in sheet or tube form, is made of nickel-titanium alloy.

[0048] In the above embodiment, when the profile is a plate, in the step of setting the connecting portion, as Figure 1 As shown, the connection part is provided by machining a threaded hole 150 or a through hole in the center of the blank, and the front end of the conveying device 300 is provided with an external thread structure or a buckle structure accordingly. When the profile is provided as a pipe, as shown in FIG. Figure 6 As shown, the connection portion is provided by additionally connecting a connection device, and the connection method may be welding, threaded connection or clamping, and the conveying device 300 is correspondingly provided with a structure matching the connection device.

[0049] According to some embodiments of the present invention, referring to Figure 1 When the profile is a plate, a bending step is also included, in which inclined stabilizing plates 140 are bent on both sides of the first clamping portion 110 by a prefabricated mold or a bending machine. The stabilizing plates 140 can make the first clamping portion 110 fit the valve more fully and avoid the formation of gaps.

[0050] In the above embodiment, the two first clamping portions 110 and the two second clamping portions 120 are symmetrically arranged, and the two second clamping portions 120 are located between the two first clamping portions 110 .

[0051] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 Between the cutting step and the connecting portion setting step, there is also a step of processing anchor thorns, in which a cutting device is used to cut the inner side of the first clamping portion 110, and one end of the cut portion is lifted to form a plurality of inwardly inclined anchor thorns 160. The anchor thorns 160 can make the first clamping portion 110 fit more firmly on the valve, thereby preventing the clamping device from falling off.

[0052] According to some embodiments of the present invention, referring to Fig.12 and Fig.13After the heat setting step, a coating step is also included, in which the film 200 is coated on the outside of the body by suturing or heat fusion. The film 200 can protect the valve tissue, accelerate endothelial coverage, increase the surface contact area, and increase the contact friction.

[0053] It should be noted that the inner side mentioned above refers to the area between the two first clamping parts 110 , and the outer side refers to the side of the first clamping part 110 away from the second clamping part 120 .

[0054] In the above embodiment, the material of the film 200 is polyester or polytetrafluoroethylene.

[0055] According to some embodiments of the present invention, referring to Figures 6 to 8 When the profile is a pipe, first cut the profile to form Figure 6 As shown in the structure, the excess waste is removed, and then the two second clamping parts 120 are folded to both sides, as shown in FIG. Figure 7 As shown, after being placed in a heat setting device for heat forming, the two first clamping parts 110 are folded outwards and the second clamping part 120 is pressed inwards to form Figure 8 Status shown.

[0056] According to some embodiments of the present invention, referring to Fig. 9 The first clamping portion 110 is an extension of the second clamping portion 120. The extension of the second clamping portion 120 is bent at the far end to form the first clamping portion 110. The first clamping portion 110 and the second clamping portion 120 are set in this shape so that the first clamping portion 110 and the second clamping portion 120 can clamp objects horizontally when they play a clamping role, reduce the clamping gap, and improve the clamping effect. The connecting device of this clamping device is set at the upper ends of the first clamping portion 110 and the second clamping portion 120.

[0057] According to some embodiments of the present invention, referring to Fig.10 The first clamping portion 110 is an extension of the second clamping portion 120. The extension of the second clamping portion 120 is bent at the distal end to form the first clamping portion 110. The shape enables the first clamping portion 110 and the second clamping portion 120 to clamp objects horizontally when they are in a clamping function, thereby reducing the clamping gap and improving the clamping effect. At the same time, an anchor barb 160 is also provided on the inner side of the first clamping portion 110 to improve the stability of the clamping device. The connecting device of the clamping device is provided in the middle of the first clamping portion 110 and the second clamping portion 120.

[0058] In the above embodiment, referring to Fig.11When the clamping device is loaded into the conveying device 300 through the connecting device, the two second clamping parts 120 are tightened toward the middle and lifted into the conveying device 300, and the two first clamping parts 110 are folded outward so that they are basically kept in the same straight line with the second clamping parts 120, and continue to pull upward so that the first clamping parts 110 also enter the conveying device 300.

[0059] During the implantation process, the main body 100 is loaded on the delivery device 300. After being delivered to the target position, the clamping device is pushed out, and the first clamping part 110 slowly closes under the relative force of closure until it is supported by the support part at the front end of the delivery device 300. The valve is accommodated between the first clamping part 110 and the second clamping part 120. After being delivered to the right position, the delivery device 300 is pulled up and the support part moves upward. At this time, the second clamping part 120 adheres to one side of the valve under the relative force of opening. The first clamping part 110 loses the supporting effect of the support part, and is retracted to the middle under the relative force of closure and adheres to the other side of the valve, thereby completing the clamping effect.

[0060] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A method for manufacturing a clamping device, It is characterized in that The following steps are involved: Cutting: cutting the profile according to a predetermined pattern to form a blank having two first clamping parts and two second clamping parts, and removing the waste material produced by cutting; Providing a connection portion, machining a threaded hole or a through hole in the center of the blank, or connecting an additional connection device in the center of the blank; Heat setting, extruding the two first clamping parts into a U-shape through a prefabricated mold, and expanding the two second clamping parts into a preset V-shape, and then placing the blank into a heat setting device for heat forming treatment to form a body; Between the cutting step and the connecting portion setting step, there is also a step of processing anchor thorns, using a cutting device to cut the inner side of the first clamping portion, and lifting one end of the cut portion to form a plurality of anchor thorns inclined inwardly; The first clamping part is an extension of the second clamping part, and the extension of the second clamping part is bent at the distal end to form the first clamping part, so that the first clamping part and the second clamping part can clamp the object horizontally when they play a clamping role, reducing the clamping gap, the anchor barb is arranged on the inner side of the first clamping part to improve the stability of the clamping device, and the connecting device is arranged in the middle position of the first clamping part and the second clamping part; When the profile is a plate, it also includes a bending step, in which both sides of the first clamping part are bent into inclined stable plates through a prefabricated mold or a bending machine, so as to enable the first clamping part to be clamped on the valve more firmly.

2. A method for manufacturing a clamping device according to claim 1, It is characterized in that In the cutting step, the profile may be a plate or a tube.

3. A method for manufacturing a clamping device according to claim 2, It is characterized in that When the profile is a plate, in the step of providing the connection part, the connection part is provided by machining the threaded hole or the through hole at the center of the blank; When the profile is a pipe, in the step of setting the connection part, the connection part is set by connecting an additional connection device at the center of the blank.

4. A method for manufacturing a clamping device according to claim 2 or 3, It is characterized in that When the profile is a pipe, the connection method between the connecting device and the blank is welding, threaded connection or clamping.

5. A method for manufacturing a clamping device according to claim 1, It is characterized in that The two first clamping parts and the two second clamping parts are arranged symmetrically.

6. A method for manufacturing a clamping device according to claim 1 or 2, It is characterized in that The material of the profile is nickel-titanium alloy.

7. A method for manufacturing a clamping device according to claim 1, It is characterized in that After the heat setting step, a film coating step is also included, in which a film is coated on the outside of the body by sewing or heat fusing.

8. A method for manufacturing a clamping device according to claim 7, It is characterized in that The material of the film is polyester or polytetrafluoroethylene.

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