A medical suture

Abstract

The present application discloses a medical suture. The medical suture includes a core made of a hard material; a flexible thread, the flexible thread is wrapped outside the core, the first end of the flexible thread is a closed end, the distal end of the core is enclosed in the first end, the second end of the flexible thread opposite to the first end is an open end, and the proximal end of the core opposite to the distal end extends out of the second end. The medical suture of the present application can achieve self-threading without the aid of a thread passer, so the aperture of the bone tunnel for threading can be made smaller.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a medical suture. Background Art

[0002] In clinical medicine, acromioclavicular joint dislocation is one of the common diseases of shoulder joint injuries. During surgical repair, elastic fixation is often used, and sutures and other implants (such as titanium plates, etc.) are usually used to fix the clavicle on the coracoid process to achieve the repair effect. However, during the operation, the suture needs to be sent from the upper side of the clavicle to the lower side of the coracoid process through the bone marrow canal. In order to facilitate the suture to pass through the bone tunnel, usually when the bone tunnel is established, the aperture is made larger to facilitate threading with a wire passer. However, the actual size of the coracoid process is very small, and making the aperture larger will affect the repair effect. Summary of the Invention

[0003] This application provides a medical suture that can achieve self-threading without the aid of a wire passer, so the aperture of the bone tunnel used for threading can be made smaller.

[0004] This application provides a medical suture, comprising:

[0005] A core, which is made of a rigid material;

[0006] A flexible wire, which is wrapped around the outside of the core. The first end of the flexible wire is a closed end, the distal end of the core is enclosed within the first end, the second end of the flexible wire opposite to the first end is an open end, and the proximal end of the core opposite to the distal end extends out of the second end.

[0007] For the medical suture according to the embodiment of this application, since a core made of a rigid material is wrapped within the flexible wire, the medical suture has a certain hardness. Doctors can directly use their hands or with the aid of surgical forceps to pass the medical suture through the bone tunnel without the aid of a wire passer. Therefore, even if the aperture of the bone tunnel used for threading is made smaller, the self-threading of the medical suture can still be achieved. Brief Description of the Drawings

[0008] Figure 1 is a schematic structural view of a medical suture provided by an embodiment of this application.

[0009] Figure 2 is this application Figure 1 The schematic cross-sectional structure view of the medical suture in Chinese medicine.

[0010] Figure 3 is a schematic structural view of another medical suture provided by an embodiment of this application.

[0011] Figure 4 is this application Figure 3Schematic cross-sectional structure diagram of a traditional Chinese medicine suture.

[0012] Figure 5 It is a schematic cross-sectional structure diagram of another medical suture provided by an embodiment of the present application.

[0013] Figure 6 It is a schematic cross-sectional structure diagram of another medical suture provided by an embodiment of the present application.

[0014] Figure 7 It is a schematic structure diagram of another medical suture provided by an embodiment of the present application.

[0015] Figure 8 It is the present application Figure 7 Schematic cross-sectional structure diagram of a traditional Chinese medicine suture.

[0016] Figure 9 It is a schematic structure diagram of another medical suture provided by an embodiment of the present application.

[0017] Figure 10 It is the present application Figure 9 Schematic cross-sectional structure diagram of a traditional Chinese medicine suture.

[0018] Figure 11 It is a schematic structure diagram of another medical suture provided by an embodiment of the present application.

[0019] Figure 12 It is the present application Figure 11 Schematic cross-sectional structure diagram of a traditional Chinese medicine suture.

[0020] Figure 13 It is a schematic structure diagram of threading on the shoulder joint provided by an embodiment of the present application.

[0021] Figure 14 It is a threading method of a medical suture provided by an embodiment of the present application.

[0022] Explanation of reference numerals: 100, medical suture; 1, inner core; 11, distal end; 12, proximal end; 2, flexible wire; 21, first end; 211, tail; 22, second end; 23, first flexible wire; 24, second flexible wire; 25, third flexible wire; 3, first headgear; 4, auxiliary sleeve; 5, second headgear; 51, first seal; 52, plug; 53, second seal; 200, clavicle; 201, first medullary canal; 300, coracoid process; 301, second medullary canal. Detailed implementation manners

[0023] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present invention.

[0024] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "proximal end", "distal end", "front and back", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0025] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] The present application will be further described in detail below in conjunction with the accompanying drawings.

[0027] As Figure 1 , Figure 2 shown, Figure 1 is a schematic structural diagram of a medical suture provided by an embodiment of the present application, Figure 2 is the present application Figure 1Schematic cross-sectional structure diagram of a traditional Chinese medicine suture. The medical suture 100 shown includes a core 1 and a flexible thread 2. The flexible thread 2 is wrapped outside the core 1. The flexible thread 2 is a braided medical yarn. One end of the flexible thread 2 is the first end 21, and the first end 21 is a closed end. One end of the core 1 is the distal end 11, and the distal end 11 is enclosed within the first end 21, that is to say, the core 1 cannot pass through the first end 21 of the flexible thread 2. The first end 21 further includes a tail 211. The tail 211 belongs to the end of the first end 21 of the flexible thread 2, and no core 1 is provided within the tail 211. The length of the tail 211 is preferably between 10 millimeters and 20 millimeters. In this embodiment, the tail 211 is subjected to heat hardening treatment, changing from a hollow structure before heat hardening treatment to a solid structure after heat hardening treatment, and the hardness of the tail 211 is greater than that of other parts of the flexible thread 2. Because the tail 211 is a solid structure, the core 1 is enclosed by the tail 211 and cannot pass through the tail 211, that is to say, the distal end 11 of the core 1 is enclosed within the first end 21 of the flexible thread 2. The other end of the flexible thread 2 opposite to the first end 21 is the second end 22, and the second end 22 is an open end. The other end of the core 1 opposite to the distal end 11 is the proximal end 12, and the proximal end 12 extends out of the second end 22. That is to say, because the second end 22 is an open end, that is, the port of the flexible thread 2 at the second end 22 is open and not enclosed, so a part of the length of the core 1 extends out from the port of the second end 22 of the flexible thread 2, facilitating clamping the extended part of the core 1 to pull the core 1 out of the flexible thread 2 during suture surgery to make the suture return to softness, and then knotting the flexible thread 2 or fixing the surgical site in other ways. The core 1 is made of a hard material, preferably a metal wire, and preferably a nitinol wire among the metal wires. The nitinol wire has a certain hardness and good flexibility at the same time. The core 1 made of the nitinol wire can drive the flexible thread 2 to pass through holes such as the medullary canal more easily and can be bent. If there is a slight misalignment between the holes to be threaded, the medical suture 100 of the present application can also be bent and easily pass through. In other embodiments, the core 1 can also be made of other hard materials, such as plastic, which is not limited in the present application.

[0028] The first end 21 of the flexible wire 2 includes a solid tail portion 211. This solid tail portion 211 can enclose the inner core 1 with a certain hardness within the first end 21 of the flexible wire 2. During the threading process of the suture operation, when downward force is applied to the medical suture 100, the inner core 1 abuts against the solid tail portion 211 and will not pass through the tail portion 211. Therefore, it can drive the flexible wire 2 to pass through holes that require threading, such as bone tunnels. After the threading is completed, the tail portion 211 is clamped with a wire clamp, and then the portion of the inner core 1 extending from the second end 22 of the flexible wire 1 is clamped by hand or another wire clamp, and then the inner core 1 can be pulled out upward from the flexible wire 2, making the suture return to softness. Subsequently, the flexible wire 2 is knotted or fixed to the surgical site in other ways. In addition, the tail portion 211 is heat-hardened, and its hardness is greater than that of the flexible wire without heat-hardening treatment, which facilitates the doctor to more easily detect and clamp the solid tail portion 211 of the medical suture 100 with a certain hardness under the assistance of an arthroscope after the threading is completed. The flexible wire 2 is preferably made of ultra-high molecular weight polyethylene material, which has great strength. In addition, the flexible wire 2 is preferably woven in a diamond shape and is a medical yarn, so that the flexible wire 2 still has great strength after the inner core 1 is pulled out from it.

[0029] It should be noted that in this embodiment, the entire tail portion 211 is heat-hardened to make the entire tail portion 211 a solid structure. In other embodiments, only a part of the tail portion 211 can be heat-hardened to make the heat-hardened part of the tail portion a solid structure. Preferably, the part of the tail portion 211 close to the inner core 1 is heat-hardened to form a solid structure.

[0030] In another embodiment of the present application, the medical suture (not shown in the figure) has the main difference from Figure 1 the medical suture 100 shown in that: the tail portion 211 is not heat-hardened, but glue is coated on the tail portion 211 to make the tail portion 211 a solid structure, and the hardness of the tail portion 211 is greater than that of other parts of the flexible wire 2. In this embodiment, the distal end 11 of the inner core 1 is also enclosed by the solid tail portion 211 and cannot pass through the tail portion 211. Except for the above differences, the other structures of the medical suture in this embodiment are the same or similar to Figure 1 the other structures of the medical suture 100 shown, so they will not be elaborated here. It should be noted that in this embodiment, the entire tail portion 211 is coated with glue to make the entire tail portion 211 a solid structure. In other embodiments, only a part of the tail portion 211 can be coated with glue to make the glued part of the tail portion a solid structure. Preferably, the part of the tail portion 211 close to the inner core 1 is coated with glue to form a solid structure.

[0031] As Figure 3 、 Figure 4 shown,Figure 3 It is a schematic structural diagram of another medical suture provided by an embodiment of the present application. Figure 4 It is the present application Figure 3 It is a schematic cross-sectional structure diagram of the medical suture in the present application. The shown medical suture 100 includes a core 1 and a flexible thread 2. The flexible thread 2 is wrapped outside the core 1. The flexible thread 2 is a woven medical yarn. One end of the flexible thread 2 is the first end 21, and the first end 21 is a closed end. One end of the core 1 is the distal end 11, and the distal end 11 is enclosed in the first end 21. That is to say, the core 1 cannot pass through the first end 21 of the flexible thread 2. The first end 21 further includes a tail 211. The tail 211 belongs to the end of the first end 21 of the flexible thread 2, and the core 1 is not provided in the tail 211. The length of the tail 211 is preferably between 10 millimeters and 20 millimeters. A first headgear 3 is further wrapped outside the tail 211. The first headgear 3 presses the tail 211 tightly, so that the distal end 11 of the core 1 is enclosed in the first end 21. That is to say, the tail 211 pressed by the first headgear 3 blocks the distal end 11 of the core 1, making the core 1 unable to pass through the first end 21 of the flexible thread 2. The first headgear 3 is preferably made of a metal with good toughness. In other embodiments, the first headgear 3 can also be made of materials such as plastic or rubber. In this embodiment, the length of the first headgear 3 is less than the length of the tail 211, and it wraps a part of the tail 211 close to the core 1. In other embodiments, the length of the first headgear 3 can also be set to be greater than or equal to the length of the tail 211 to completely wrap the tail 211. The other end of the flexible thread 2 opposite to the first end 21 is the second end 22, and the second end 22 is an open end. The other end of the core 1 opposite to the distal end 11 is the proximal end 12, and the proximal end 12 extends out of the second section 22. That is to say, because the second end 22 is an open end, that is, the port of the flexible thread 2 at the second end 22 is open and not closed, so a part of the length of the core 1 extends out from the port of the second end 22 of the flexible thread 2, which is convenient for clamping the extended part of the core 1 to pull the core 1 out of the flexible thread 2 during the suture operation, making the suture return to softness, and then knotting the flexible thread 2 or fixing the surgical site in other ways. The core 1 is made of a hard material, preferably a metal wire, and preferably a nitinol wire among the metal wires. The nitinol wire has a certain hardness and good flexibility at the same time. The core 1 made of the nitinol wire can drive the flexible thread 2 to pass through holes such as the medullary canal more easily and can be bent. If there is a slight misalignment between the holes to be threaded, the medical suture 100 of the present application can also be bent and easily pass through. In other embodiments, the core 1 can also be made of other hard materials, such as plastic, which is not limited in the present application.

[0032] In addition, the tail portion 211 is wrapped by a first headgear 3. Since the first headgear 3 has a relatively high hardness, it is convenient for the doctor to more easily detect and clamp the relatively hard tail portion 211 of the medical suture 100 with a wire clamp under the assistance of an arthroscope after the threading is completed. The flexible wire 2 is preferably made of ultra-high molecular weight polyethylene material, which has great strength. In addition, the flexible wire 2 is preferably woven in a diamond shape and is a medical yarn, so that the flexible wire 2 still has great strength after the inner core 1 is withdrawn therefrom.

[0033] As Figure 5 shown, Figure 5 is a schematic cross-sectional structure diagram of another medical suture provided by an embodiment of the present application. The main difference between the medical suture 100 and the Figure 2 medical suture 100 shown is that: a part of the flexible wire 2 wrapped outside the distal end 11 of the inner core 1 is a first flexible wire 23, and the first flexible wire 23 has also been subjected to heat hardening treatment, so its density becomes larger, which can further prevent the distal end 11 of the inner core 1 from passing through the first flexible wire 23 during the threading process. Except for the above differences, the other structures of the medical suture 100 in this embodiment are the same as or similar to the other structures of the Figure 2 medical suture 100 shown, so they will not be described in detail.

[0034] As Figure 6 shown, Figure 6 is a schematic cross-sectional structure diagram of another medical suture provided by an embodiment of the present application. The main difference between the medical suture 100 and the Figure 2 medical suture 100 shown lies in two points: First, the tail portion 211 has not been subjected to heat hardening treatment, but glue is coated on the tail portion 211 to make the tail portion 211 a solid structure, and the hardness of the tail portion 211 is greater than that of the part of the flexible wire 2 where no glue is coated. In this embodiment, the distal end 11 of the inner core 1 is also sealed by the solid tail portion 211 and cannot pass through the tail portion 211; Second, a part of the flexible wire 2 wrapped outside the distal end 11 of the inner core 1 is a second flexible wire 24, and glue is also coated on the second flexible wire 24, so its density becomes larger, which can further prevent the distal end 11 of the inner core 1 from passing through the second flexible wire 24 during the threading process. Except for the above two differences, the other structures of the medical suture 100 in this embodiment are the same as or similar to the other structures of the Figure 2 medical suture 100 shown, so they will not be described in detail.

[0035] As Figure 7 , Figure 8 shown, Figure 7 is a schematic structure diagram of another medical suture provided by an embodiment of the present application, Figure 8 is a Figure 7 schematic cross-sectional structure diagram of the medical suture in the present application. The medical suture 100 andFigure 3 , Figure 4 The main difference of the medical suture 100 shown is that the partial flexible thread 2 wrapped outside the distal end 11 of the inner core 1 is the third flexible thread 25, and an auxiliary sleeve 4 is further wrapped outside the third flexible thread 25. The auxiliary sleeve 4 is preferably made of a metal with good toughness, which can further prevent the distal end 11 of the inner core 1 from passing through the third flexible thread 25 during the threading process. Except for the above differences, the other structures of the medical suture 100 in this embodiment are the same as or similar to those of Figure 3 , Figure 4 the medical suture 100 shown, so they will not be described in detail.

[0036] As Figure 9 , Figure 10 shown, Figure 9 is a schematic structural diagram of another medical suture provided by an embodiment of the present application, Figure 10 is the present application Figure 9Schematic cross-sectional structure diagram of a traditional Chinese medicine suture. The medical suture 100 shown includes a core 1 and a flexible thread 2. The flexible thread 2 is wrapped outside the core 1. One end of the flexible thread 2 is the first end 21, and the first end 21 is a closed end. One end of the core 1 is the distal end 11, and the distal end 11 is enclosed within the first end 21. That is to say, the core 1 cannot pass through the first end 21 of the flexible thread 2. A second headgear 5 is wrapped outside the first end 21 of the flexible thread 2. The second headgear 5 presses at least part of the first end 21, so that the distal end 11 of the core 1 is enclosed within the first end 21. That is to say, the first end 21 pressed by the second headgear 5 blocks the distal end 11 of the core 1, making the core 1 unable to pass through the first end 21 of the flexible thread 2. The second headgear 5 is preferably made of a metal with good toughness. In other embodiments, the second headgear 5 can also be made of materials such as plastic or rubber. In this embodiment, in the length direction of the flexible thread 2, the length of the second headgear 5 is greater than the length of the first end 21. That is to say, the second headgear 5 extends beyond the first end 21 by a certain length, and the front and rear parts of the end of the extended part are pressed and fitted together to form a first seal 51, making the core 1 unable to pass through the first end 21 of the flexible thread 2. In this embodiment, both ends of the second headgear 5 in the axial direction are open and not blocked. The other end of the flexible thread 2 opposite to the first end 21 is the second end 22, and the second end 22 is an open end. The other end of the core 1 opposite to the distal end 11 is the proximal end 12, and the proximal end 12 extends out of the second section 22. That is to say, because the second end 22 is an open end, that is, the port of the flexible thread 2 at the second end 22 is open and not closed, so the core 1 extends out a certain length from the port of the second end 22 of the flexible thread 2, facilitating clamping the extended part of the core 1 to pull the core 1 out of the flexible thread 2 during the suture operation, making the suture return to softness, and then tying the flexible thread 2 or fixing the surgical site in other ways. The core 1 is made of a hard material, preferably a metal wire, and preferably a nitinol wire among the metal wires. The nitinol wire has a certain hardness and good flexibility at the same time. The core 1 made of the nitinol wire can drive the flexible thread 2 to pass through holes such as the medullary canal more easily and can be bent. If there is a slight misalignment between the holes to be threaded, the medical suture 100 of the present application can also be bent and easily passed through. In other embodiments, the core 1 can also be made of other hard materials, such as plastic, which is not limited in the present application.

[0037] The flexible thread 2 is preferably made of ultra-high molecular weight polyethylene material, which has great strength. In addition, the flexible thread 2 is preferably woven in a diamond shape and is a medical yarn, so that the flexible thread 2 still has great strength after the core 1 is pulled out from it.

[0038] As Figure 11 、 Figure 12 shown, Figure 11It is a schematic structural diagram of another medical suture provided by an embodiment of the present application. Figure 12 It is the present application Figure 11 A schematic cross-sectional structure diagram of the medical suture in the present application. The medical suture 100 is mainly different from the Figure 9 , Figure 10 shown medical suture 100 in the structure of the second head sleeve 5. In this embodiment, one end of the second head sleeve 5 in the axial direction is open and not blocked, while the other end is blocked by a plug 52 integrally formed with the second head sleeve 5, forming a second seal 53. The second seal 53 blocks the distal end 11 of the inner core 1, preventing the inner core 1 from passing through the first end 21 of the flexible wire 2. Except for the above differences, the other structures of the second head sleeve 5 in this embodiment are the same or similar to the other structures of the second head sleeve 5 on the Figure 9 , Figure 10 shown medical suture 100, so they will not be elaborated here.

[0039] As shown in Figure 13 , Figure 14 shown, Figure 13 It is a schematic structural diagram of threading on the shoulder joint provided by an embodiment of the present application. Figure 14 It is a threading method of a medical suture provided by an embodiment of the present application. Taking threading on the shoulder joint as an example, this embodiment illustrates the threading method of any medical suture 100 in the embodiments of the present application, including:

[0040] The first step S1: Clamp the medical suture 100 with the hand or surgical forceps. Starting from the first end 21, insert the medical suture 100 into the first bone marrow canal 201 that has been drilled on the supraclavicle.

[0041] The second step S2: Apply downward force to the medical suture 100, so that the inner core 1 drives the flexible wire 2 to pass through the first bone tunnel 201 together and then insert it into the second bone marrow canal 301 that has been drilled on the coracoid process 300.

[0042] The third step S3: After the medical suture 100 passes through the second bone marrow canal 301, clamp the tail 211 or the second head sleeve 5 with a wire clamp, and then clamp the part of the inner core 1 that extends from the second end 22 of the flexible wire 2 with the hand or surgical forceps, and pull it upward to extract the inner core 1 from the flexible wire 2.

[0043] After the inner core 1 is extracted from the flexible wire 2, the suture becomes soft. Subsequently, the flexible wire 2 is knotted or the supraclavicle is fixed to the coracoid process in other ways. For the medical suture in the embodiment of the present application, since an inner core made of a hard material is wrapped in the flexible wire, the medical suture has a certain hardness. Doctors can directly insert the medical suture through the bone tunnel by hand or with the help of surgical forceps without using a wire passer. Therefore, even if the aperture of the bone tunnel for threading is made smaller, the self-threading of the medical suture can be achieved.

[0044] It should be noted that, in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0045] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A medical suture, characterized in that, Comprising: An inner core made of a rigid material; A flexible thread, the flexible thread being wrapped around the outside of the inner core, a first end of the flexible thread being a closed end, a distal end of the inner core being enclosed within the first end, a second end of the flexible thread opposite to the first end being an open end, and a proximal end of the inner core opposite to the distal end protruding from the second end; After the threading of the suture operation is completed, the inner core can be withdrawn from the flexible thread.

2. The medical suture according to claim 1, wherein The first end includes a tail portion, and no inner core is provided within the tail portion.

3. The medical suture according to claim 2, wherein At least a part of the tail portion is a solid structure.

4. The medical suture according to claim 3, wherein At least a part of the tail portion is heat-hardened.

5. The medical suture according to claim 3, wherein Glue is coated on at least a part of the tail portion.

6. The medical suture according to claim 1, wherein The inner core is a metal wire.

7. The medical suture according to claim 1, wherein The flexible thread is a medical yarn.

8. The medical suture according to claim 2, wherein At least a part of the tail portion is wrapped with a first headgear, and the first headgear presses the tail portion so that the inner core cannot pass through the tail portion.

9. The medical suture according to claim 4, wherein A part of the flexible thread wrapped around the distal end of the inner core is a first flexible thread, and the first flexible thread is also heat-hardened.

10. The medical suture according to claim 5, wherein A part of the flexible thread wrapped around the distal end of the inner core is a second flexible thread, and glue is also coated on the second flexible thread.

11. The medical suture according to claim 8, wherein A part of the flexible thread wrapped around the distal end of the inner core is a third flexible thread, and an auxiliary sleeve is further wrapped around the third flexible thread.

12. The medical suture according to claim 1, wherein At least a part of the first end of the flexible thread is wrapped with a second headgear, and the second headgear presses at least a part of the first end so that the inner core cannot pass through the first end.

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