Artificial prosthesis

Abstract

Disclosed in the present invention is an artificial prosthesis. The artificial prosthesis is a sheet-shaped, tubular, spherical, or other irregularly shaped prosthesis obtained by means of sewing molding. A sewing structure formed by sutures when the artificial prosthesis is sewn and molded is used to prevent body fluids located on one side with higher pressure of the artificial prosthesis from permeating to one side with lower pressure. According to the present invention, when the artificial prosthesis is sewn and molded, by means of improving the sewing structure, the sewing structure formed on the artificial prosthesis is used to prevent the permeation of body fluids at the sewing position, which well solves the problem that such artificial prosthesis products are prone to body fluid permeation in application.

Description

Artificial prosthesis TECHNICAL FIELD

[0001] The present application relates to the medical technology field, and in particular to an artificial prosthesis. BACKGROUND

[0002] In the sewing operation of medical products, due to the size of the needle hole formed by the sewing operation on the material is often larger than the diameter of the suture, resulting in the penetration of body fluid through the needle hole at the sewing position during the use of the medical product, which makes it difficult for the medical product formed by sewing to meet the application requirements in the scene with high leakage performance requirements. SUMMARY

[0003] The purpose of the present application is to provide an artificial prosthesis to solve the problem of body fluid penetration at the sewing position of the artificial prosthesis formed by sewing in application.

[0004] The present application is realized by the following technical solutions:

[0005] The artificial prosthesis is a prosthesis in the form of a sheet, a tube, a ball or other irregular shapes formed by sewing, and the sewing structure formed by the suture during the sewing of the artificial prosthesis prevents the body fluid on the high pressure side of the artificial prosthesis from penetrating to the low pressure side.

[0006] In some embodiments, the sewing structure includes a joint formed at the needle hole position of each sewing point by connecting between the suture, and the joint blocks the penetration of the body fluid on the high pressure side of the artificial prosthesis to the low pressure side by plugging the needle hole.

[0007] In some embodiments, the joint is formed by using a needle to pass the first suture from the low pressure side to the high pressure side of the artificial prosthesis at each sewing point, and then returning the needle to the low pressure side with the first suture after passing the first suture around the second suture arranged on the high pressure side, and the first suture and the second suture are connected on the high pressure side to form the joint.

[0008] In some embodiments, the joint is located at one end of the needle hole on the side with higher pressure.

[0009] In some embodiments, the joint is located in the needle hole.

[0010] In some embodiments, the diameter of the first suture is smaller than the diameter of the second suture.

[0011] In some embodiments, the artificial prosthesis is obtained by abutting the artificial prosthesis material and sewing the abutting position.

[0012] In some embodiments, the sewing structure adopted by the artificial prosthesis sewing forming is:

[0013] With the seam in the docking position as a reference, the first suture is taken by the sewing needle from the low-pressure side of the artificial prosthesis to the high-pressure side, and then the first suture is passed around the second suture arranged at the high-pressure side, and then the sewing needle is returned to the low-pressure side with the first suture, the first suture is connected with the second suture at the high-pressure side and a joint is formed at the needle hole position, and the joint blocks the penetration of the body fluid at the high-pressure side of the artificial prosthesis to the low-pressure side;

[0014] The sewing needle is crossed to another sewing point on the other side of the seam, and the same sewing operation is performed at the sewing point.

[0015] The above steps are sequentially repeated to obtain the sewing structure.

[0016] In some embodiments, the artificial prosthesis is obtained by layering or overlapping the artificial prosthesis material and sewing the layered or overlapped position.

[0017] In some embodiments, the artificial prosthesis is obtained by sewing a marker line on the artificial prosthesis material.

[0018] In some embodiments, the sewing structure adopted by the artificial prosthesis sewing forming is:

[0019] With the seam in the docking position as a reference, the first suture is taken by the sewing needle from the low-pressure side of the artificial prosthesis to the high-pressure side, and then the first suture is passed around the second suture arranged at the high-pressure side, and then the sewing needle is returned to the low-pressure side with the first suture, the first suture is connected with the second suture at the high-pressure side and a joint is formed at the needle hole position, and the joint blocks the penetration of the body fluid at the high-pressure side of the artificial prosthesis to the low-pressure side;

[0020] The above steps are sequentially repeated to obtain the sewing structure.

[0021] In some embodiments, the sewing structure can prevent the penetration of body fluid with a pressure of 0-300 mmHg.

[0022] In some embodiments, the artificial prosthesis is a covered stent, an artificial blood vessel, an artificial valve, and a patch.

[0023] In some embodiments, the artificial prosthesis is made of biological material or artificial material.

[0024] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0025] The application solves the problem of body fluid penetration in the application of the artificial prosthesis product by improving the sewing structure and preventing the penetration of body fluid at the sewing position through the sewing structure formed on the artificial prosthesis.

[0026] The sewing structure used in the application blocks the needle hole by the joint formed by the sewing thread at the needle hole position, and solves the problem of body fluid penetration through the needle hole at the sewing position without additional process.

[0027] The application can be applied to the application scenarios such as the covered stent, artificial blood vessel, artificial valve, patch, etc. which need to be formed by sewing, and has wide application prospect in the preparation of artificial prosthesis. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0029] Fig. 1 is a schematic view of the sewing structure of the conventional sewing forming method.

[0030] Fig. 2 is a schematic view of the cross section of the sewing structure at the sewing position of the conventional sewing forming method.

[0031] Fig. 3 is a schematic view of the structure of the sewing thread arranged on the sewing needle for sewing operation.

[0032] Fig. 4 is a schematic view of the artificial prosthesis structure formed by sewing the artificial prosthesis material arranged in lap at the lap position in the embodiment of the application.

[0033] Fig. 5 is a schematic view of the cross section of the sewing structure used in the sewing forming in the embodiment of the application.

[0034] Fig. 6 is a schematic view of the cross section of another embodiment of the sewing structure used in the sewing forming in the embodiment of the application.

[0035] Fig. 7 is a schematic view of the artificial prosthesis structure formed by sewing the artificial prosthesis material arranged in stack in the embodiment of the application.

[0036] Fig. 8 is a schematic view of an artificial prosthesis structure formed by sewing the artificial prosthesis material in the embodiment of the application.

[0037] Fig. 9 is a schematic view of the artificial prosthesis structure formed by sewing the artificial prosthesis material arranged in butt joint at the butt joint position in the embodiment of the application.

[0038] Fig. 10 is another view of the artificial prosthesis formed by stitching the artificial prosthesis material in the docking position in the embodiment of the present application.

[0039] Fig. 11 is a schematic diagram of the stitching structure used in the stitching forming of Figs. 9 and 10.

[0040] In the figures: 11, artificial prosthesis material, 12, needle hole, 13, seam; 21, second stitching line, 22, first stitching line, 23, joint; 30, stitching line, 31, needle. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0042] Referring to Figs. 1 and 2, a schematic diagram of the structure of the artificial prosthesis prepared by stitching connecting two pieces of artificial prosthesis material 11 using the conventional stitching forming method is shown. This conventional stitching forming method usually uses one stitching line to sequentially pass the needle from one position to another position along the stitching direction, and connects the two pieces of artificial prosthesis material by stitching to prepare the artificial prosthesis.

[0043] As shown in Fig. 3, in the stitching forming operation, one end of the stitching line 31 is passed through the needle 30 and folded at the end of the stitching line. At this time, the size of the needle hole formed on the artificial prosthesis is obviously larger than the size of the single stitching line, which causes the body fluid to easily penetrate through the needle hole. This results in the problem that the artificial prosthesis prepared by using the conventional stitching forming method easily leaks body fluid at the needle hole.

[0044] To solve the above problems, the present application improves the stitching structure formed by stitching forming. The stitching structure formed by the stitching line on the artificial prosthesis during the stitching forming process solves the problem of body fluid penetration at the stitching position.

[0045] In some embodiments, the artificial prosthesis in the present application is a prosthesis in the form of a sheet, a tube, a ball or other irregular shape prepared by stitching forming. The stitching structure formed by the stitching line during the stitching forming of the artificial prosthesis prevents the body fluid on the side with higher pressure of the artificial prosthesis from penetrating to the side with lower pressure. Taking an artificial blood vessel as an example, the inside of the artificial blood vessel is the side with higher pressure of the body fluid, and the outside of the artificial blood vessel is the side with lower pressure of the body fluid. Here, the higher and lower pressures are determined based on the difference in the pressure of the body fluid on the two sides of the artificial prosthesis.

[0046] The artificial prosthesis formed by sewing, for example, can be a covered stent, an artificial blood vessel, an artificial valve, a patch, and the like. Of course, it is not limited to the above-mentioned prosthesis products, and other prostheses that need to be prepared by sewing and need to avoid body fluid penetration in actual application also belong to the artificial prosthesis in the present application.

[0047] The sewing structure in the embodiment of the present application includes a joint 23 formed by the connection between the sewing threads at the needle hole position of each sewing point during sewing. The joint formed at each needle hole position is used to block the needle hole to prevent the body fluid on the high pressure side of the artificial prosthesis from penetrating to the low pressure side. The high pressure side here refers to the side where the body fluid pressure of the artificial prosthesis is higher, and the low pressure side refers to the side where the body fluid pressure of the artificial prosthesis is lower.

[0048] Since the joint in the sewing structure is formed by the sewing thread during sewing, no other materials or components are introduced into the artificial prosthesis during the preparation of the artificial prosthesis, which is also very important for the safety of the preparation and use of the artificial prosthesis.

[0049] In some embodiments, the joint 23 is formed by using the sewing needle 31 to pass the first sewing thread 22 from the low pressure side to the high pressure side of the artificial prosthesis at each sewing point, passing the first sewing thread 22 around the second sewing thread 21 arranged on the high pressure side, and then returning the sewing needle 30 with the first sewing thread 21 from the original needle hole 12 to the low pressure side. The first sewing thread 22 and the second sewing thread 21 are connected at the high pressure side to form the joint 23.

[0050] Referring to FIG. 5, in the above-mentioned embodiment, the first sewing thread is passed around the second sewing thread, and when the first sewing thread is passed to the original needle hole and returned to the low pressure side, the first sewing thread and the second sewing thread are cross-connected to form the joint at the corresponding needle hole position. The size of the joint formed at this time can be approximately considered as the sum of twice the diameter of the first sewing thread and twice the diameter of the second sewing thread, so the size of the joint is obviously larger than the size of the needle hole, thereby achieving the blocking of the needle hole.

[0051] As an implementable structure, the above-mentioned joint can also be a connection structure formed by winding or knotting between the first sewing thread and the second sewing thread after the first sewing thread is passed to the high pressure side. At this time, the joint is obtained by the connection between the sewing threads. When the first sewing thread is returned to the low pressure side from the original needle hole, the joint obtained is located at the needle hole position, thereby blocking the needle hole on the high pressure side.

[0052] Referring to FIGS. 4, 5 and 6, the sewing structure formed by sewing the artificial prosthesis material arranged in a lap joint or a stack is taken as an example to describe the sewing structure formed by the sewing thread during sewing.

[0053] The first suture 22 is passed from the low pressure side to the high pressure side of the artificial prosthesis by the suture needle 31, and the first suture 22 is passed around the second suture 21 arranged at the high pressure side, then the suture needle 31 returns to the low pressure side from the original needle hole 12 with the first suture 22, the first suture 22 is connected with the second suture 21 at the high pressure side to form a joint 23, and the joint is used to block the needle hole to prevent the body fluid at the high pressure side of the artificial prosthesis from penetrating to the low pressure side;

[0054] The above steps are repeated in sequence, and the same sewing operation is performed at other sewing points by the suture needle to form the required sewing structure on the artificial prosthesis.

[0055] The sewing structure in the embodiment of the present application can prevent the penetration of body fluid with a pressure of 0-300mmHg, and can meet the use requirements of different artificial prostheses implanted or replaced at different positions.

[0056] On the other hand, taking the preparation of the tubular artificial prosthesis shown in FIG. 8 as an example, the artificial prosthesis obtained by using the conventional sewing forming method not only has the problem of penetration of body fluid from the inside of the tube to the outside of the tube at the sewing position, but also cannot stably and reliably connect the artificial prosthesis at the sewing position because the suture can only exert force on one side of the artificial prosthesis at each sewing point, and at this time, the joint at the lap joint position also has the problem of easy penetration of body fluid to the outside.

[0057] By using the sewing structure in the embodiment of the present application, since two sutures are used for sewing forming, and the two sutures are arranged on both sides of the artificial prosthesis respectively, the two sutures can exert force on both sides of the artificial prosthesis at the same time through the connection between the two sutures at each sewing point, so that the connection at the lap joint position can be more closely, and the penetration of body fluid through the joint at the lap joint position can be effectively prevented.

[0058] In some embodiments, the joint 23 formed by the suture in the sewing structure is located at one end of the needle hole 12 on the side with higher pressure. Taking an artificial blood vessel as an example, the pressure of the body fluid in the artificial blood vessel is higher than the pressure outside the artificial blood vessel, and the joint is arranged at the position of one end of the needle hole on the side with higher pressure, so that better penetration prevention effect can be achieved when the end of the needle hole is blocked. At the same time, based on the cooperation between the joint and the needle hole, a stable connection can be formed between the suture and the artificial prosthesis.

[0059] In some embodiments, the joint 23 formed by the suture in the sewing structure can also be arranged in the needle hole 12, and at this time, since the size of the joint is larger than the size of the needle hole, the joint and the needle hole can be tightly fitted by mutual extrusion, and the needle hole can be better blocked by the joint at this time.

[0060] The way of setting the joint into the needle hole can adopt that during the sewing operation, the joint is brought into the needle hole by the force of the first suture thread when the first suture thread is returned to the low pressure side through the original needle hole.

[0061] In some embodiments, the diameter of the first suture thread 22 used in the artificial prosthesis sewing forming is set to be smaller than the diameter of the second suture thread 21. Referring to such sewing structure in FIGS. 5 and 6, the size of the joint can be increased without affecting the size of the needle hole, so that the needle hole can be better blocked.

[0062] The suture thread used in the artificial prosthesis sewing forming can be any material of existing material that can be applied to the artificial prosthesis sewing forming. For example, the first suture thread can use PE material, which has high strength and can well meet the strength requirement of the sewing connection structure; the second suture thread can use polyester material, which has good water absorption and expansion performance and can achieve good effect in application.

[0063] The material used in the artificial prosthesis can be a biological material or an artificial material; the biological material can be, for example, a natural biological material or a modified natural biological material, such as bovine pericardium material, etc.; the artificial material can be a woven fabric made of fiber or a silicone product, etc. When sewing operation is performed on these materials, the sewing structure in the above embodiments can well prevent the penetration of body fluid.

[0064] In some embodiments, the artificial prosthesis can be obtained by abutting a sheet-shaped artificial prosthesis material and sewing the abutting position. The sewing structure of the artificial prosthesis obtained by sewing the abutting position is shown in FIGS. 9 and 10. Here, the two pieces of artificial prosthesis material can be abutted at the end, or one piece of artificial prosthesis material can be wound and the two free ends are aligned and abutted. For example, two pieces of artificial prosthesis material are abutted to form an artificial prosthesis such as a patch, or one piece of artificial prosthesis material is abutted at both ends to form a tubular artificial blood vessel.

[0065] Referring to FIGS. 9, 10 and 11, the sewing structure used for sewing the abutting position is as follows:

[0066] Referring to the seam 13 of the abutting position, the first suture thread 22 is brought to the high pressure side from the low pressure side of the artificial prosthesis by the sewing needle, the first suture thread 22 is wound around the second suture thread 21 arranged at the high pressure side, and then the sewing needle 31 returns to the low pressure side with the first suture thread 22, the first suture thread 22 is connected with the second suture thread 21 at the high pressure side and forms a joint 23 at the needle hole position;

[0067] The sewing needle 31 is arranged to another sewing point on the other side of the joint 13, and the same sewing operation is performed at the sewing point;

[0068] The above steps are repeated in sequence to obtain a sewing structure, and the obtained sewing structure is shown in Fig. 11.

[0069] The artificial prosthesis is prepared by butt joint sewing of the artificial prosthesis material, the thickness of the artificial prosthesis at the sewing position is consistent with the artificial prosthesis material, the overall thickness of the artificial prosthesis cannot be increased, and the continuity of the surface of the artificial prosthesis can be ensured, which has important role and significance in the preparation of small-sized artificial prosthesis such as artificial blood vessels.

[0070] In some embodiments, the artificial prosthesis can be obtained by layering or overlapping the artificial prosthesis material and sewing the layered or overlapped position. For example, two pieces of artificial prosthesis material can be overlapped at the end, or a piece of artificial prosthesis material can be wound and the two free ends are overlapped at the end to form an artificial prosthesis; or two or more pieces of artificial prosthesis material of the same material or different materials are layered and sewn to form an artificial prosthesis, as shown in Fig. 7.

[0071] The artificial prosthesis in the embodiment of the present application can also be obtained by sewing a mark line on the artificial prosthesis material.

[0072] The artificial prosthesis material arranged by overlapping or layering is sewn, or the artificial prosthesis material is sewn to obtain a prosthesis with a mark line.

[0073] The sewing needle 31 is arranged to another sewing point on the other side of the joint 13, and the same sewing operation is performed at the sewing point;

[0074] The above steps are repeated in sequence to obtain a sewing structure, and the obtained sewing structure is shown in Fig. 11.

[0075] Based on the improvement made in the present application, it can be seen that the present application is suitable for artificial prosthesis prepared by sewing forming process, such as artificial blood vessels prepared by sewing forming, or artificial valves prepared by sewing the valve skirt to the valve support, or artificial prosthesis with mark line formed on the artificial prosthesis material by sewing the sewing line on the artificial prosthesis material, etc.

[0076] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0077] In addition, the terms "horizontal", "vertical" and the like in the description of the present application do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0078] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "provided", "mounted", "connected", "linked" appear, they should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0079] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made according to the technical essence of the present application to the above embodiments falls within the scope of protection of the present application.

Claims

1. Artificial prosthesis, characterized in that, The artificial prosthesis is in the shape of a sheet, a tube, a ball or other irregular shape obtained by sewing forming. The sewing structure formed by the sewing thread prevents the body fluid on the high pressure side of the artificial prosthesis from permeating to the low pressure side.

2. Artificial prosthesis according to claim 1, characterized in that The sewing structure includes a joint formed at the needle hole position of each sewing point by the connection between the sewing threads. The joint blocks the needle hole to prevent the body fluid on the high pressure side of the artificial prosthesis from permeating to the low pressure side.

3. The artificial prosthesis of claim 2, wherein, The joint is formed by the first sewing thread passing through the low pressure side to the high pressure side of the artificial prosthesis at each sewing point with the needle, passing the first sewing thread around the second sewing thread arranged at the high pressure side, and returning the first sewing thread to the low pressure side from the original needle hole with the needle. The first sewing thread is connected with the second sewing thread at the high pressure side to form the joint.

4. Artificial prosthesis according to claim 2 or 3, characterized in that The joint is located at the end of the needle hole on the side with higher pressure.

5. Artificial prosthesis according to claim 2 or 3, characterized in that The joint is located in the needle hole.

6. The artificial prosthesis of claim 3, wherein, The diameter of the first sewing thread is smaller than that of the second sewing thread.

7. The artificial prosthesis of claim 1, wherein, The artificial prosthesis is obtained by abutting the artificial prosthesis material and sewing forming the abutting position.

8. The artificial prosthesis of claim 7, wherein, The sewing structure used for the artificial prosthesis sewing forming is as follows: With reference to the seam of the abutting position, the first sewing thread is passed through the low pressure side to the high pressure side of the artificial prosthesis with the needle at one side of the seam, the first sewing thread is passed around the second sewing thread arranged at the high pressure side, and the first sewing thread is returned to the low pressure side from the original needle hole with the needle. The first sewing thread is connected with the second sewing thread at the high pressure side to form a joint at the needle hole position. The joint blocks the needle hole to prevent the body fluid on the high pressure side of the artificial prosthesis from permeating to the low pressure side. The needle is crossed to another sewing point on the other side of the seam, and the same sewing operation is performed at the sewing point. The above steps are repeated in sequence to obtain the sewing structure.

9. The artificial prosthesis of claim 1, wherein, The artificial prosthesis is obtained by abutting the artificial prosthesis material and sewing forming the abutting position.

10. The artificial prosthesis of claim 1, wherein, The artificial prosthesis is obtained by sewing forming the artificial prosthesis material to have a marker line.

11. Artificial prosthesis according to claim 9 or 10, characterized in that The sewing structure used for the artificial prosthesis sewing forming is as follows: The first sewing thread is passed through the low pressure side to the high pressure side of the artificial prosthesis with the needle, the first sewing thread is passed around the second sewing thread arranged at the high pressure side, and the first sewing thread is returned to the low pressure side from the original needle hole with the needle. The first sewing thread is connected with the second sewing thread at the high pressure side to form a joint at the needle hole position. The joint blocks the needle hole to prevent the body fluid on the high pressure side of the artificial prosthesis from permeating to the low pressure side. The above steps are repeated in sequence to obtain the sewing structure.

12. The artificial prosthesis of claim 1, wherein, The sewing structure can prevent the permeation of body fluid with a pressure of 0-300 mmHg.

13. The artificial prosthesis of claim 1, wherein, The artificial prosthesis is a covered stent, an artificial blood vessel, an artificial valve, a patch.

14. The artificial prosthesis of claim 1, wherein, The artificial prosthesis is made of biological material or artificial material.

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