A medical suture

Abstract

The present invention discloses a medical suture, belonging to the field of medical surgical instruments and accessories. It includes a suture main body and a stop structure located at the end of the suture main body. The stop structure includes: a stop main body part, the central part of the stop main body part is connected to the suture main body, and the stop main body part is formed into an arc-shaped sheet structure that protrudes outward away from the suture main body; at least two stop protrusion parts, the stop protrusion parts are rotationally symmetrically connected to the circumferential edge position of the stop main body part, and at least part of the area thereof protrudes from the surface of the suture main body part close to the suture main body on one side. The present invention solves the problem that the unreasonable design of the existing suture affects the surgical quality.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and particularly relates to a medical suture. Background Art

[0002] The surgical suture commonly used in surgical operations is to suture the wound through a needle and thread. Generally, one end of the suture is fixed to a part of biological tissue in the form of a knot tied by a surgical operator, and the tied knot will gradually heal over time or at the local part of the patient's wound. This knot-forming method has the risk of loosening or directly opening automatically, making this blocking mode not reliable enough; for the necessary steps in the surgical process, it forces the surgical operator to tie high-quality and sufficient knots. Therefore, the surgical suture process by tying knots by the surgical operator takes a long time, especially when operating under a microscope, the difficulty is greater, which greatly affects the time of the entire treatment intervention.

[0003] With the development of related technologies, sutures with a stop device at the tail can achieve the operation of avoiding tying knots at the tail and are gradually tried to be applied to surgeries. However, the current technology is not yet mature, and most of the tail stop devices still have the problem of relative slippage with respect to the tissue, which affects the surgical quality. Based on this, the applicant previously proposed a suture with a stop structure at the tail, and its stop structure is formed into a flat plate shape, and a plurality of protrusions are provided on one side of the flat plate, and the protrusions can be embedded into the tissue surface to make the combination firm. However, in actual applications, there are problems that the protrusions cannot enter the tissue surface as preset or the damaged area of the tissue surface is relatively large, thereby reducing the surgical quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is the problem that the unreasonable design of the existing suture with a stop structure affects the surgical quality.

[0005] In view of the above technical problems, the present invention provides the following technical solutions:

[0006] A medical suture, comprising a suture body and a stop structure located at the end of the suture body, wherein the stop structure comprises: a stop main body part, the central part of the stop main body part is connected to the suture body, and the stop main body part is formed into an arc-shaped sheet structure that protrudes outward in a direction away from the suture body; at least two stop protrusion parts, the stop protrusion parts are rotationally symmetrically connected to the circumferential edge position of the stop main body part, and at least part of the area thereof protrudes from the side surface of the suture body part close to the suture body.

[0007] In some embodiments of the present invention, a hemispherical protrusion protruding outward is provided in the central area of the side surface of the stop main body part away from the suture body, and the hemispherical protrusion is smoothly transitioned with the adjacent surface.

[0008] In some embodiments of the present invention, the stop main body is formed as a rotationally symmetric body with the first longitudinal axis as the rotation axis.

[0009] In some embodiments of the present invention, the cross-section of the stop main body is one of a polygon, a circle, and a polygonal shape.

[0010] In some embodiments of the present invention, the stop protrusion extends along the second longitudinal axis direction, and the stop protrusion includes a connection area and a piercing area arranged along the second longitudinal axis direction, wherein the connection area is connected to the stop main body, the piercing area is located on the side close to the suture main body, and the cross-sectional area of the stop protrusion gradually decreases from the connection area to the piercing area.

[0011] In some embodiments of the present invention, the stop protrusion is formed as a rotationally symmetric body with the second longitudinal axis as the rotation axis, and the distance L between the second longitudinal axis and the first longitudinal axis is 1 mm - 3 mm.

[0012] In some embodiments of the present invention, the stop protrusion is an inverted cone, and the area with a larger cross-sectional area of the inverted cone forms the connection area, and the area with a smaller cross-sectional area of the inverted cone forms the piercing area.

[0013] In some embodiments of the present invention, the stop protrusion is a spindle, and the central area with a larger cross-sectional area of the spindle forms the connection area, and the area with a smaller cross-sectional area of the spindle located on the side close to the suture main body forms the piercing area.

[0014] In some embodiments of the present invention, a groove is formed on the end face of the stop protrusion on the side close to the suture main body.

[0015] In some embodiments of the present invention, the stop main body is formed as a sheet body of an approximate polygon or an approximate polygonal shape, the stop protrusion is located in the end corner area of the polygon or the polygonal shape, and the number of the stop protrusions is equal to the number of sides of the polygon or the number of corners of the polygonal shape.

[0016] In some embodiments of the present invention, the stop main body is formed as a sheet body of an approximate triangular star shape, three stop protrusions are provided and are respectively located in the three end corner areas of the stop main body, and the stop protrusions are formed as spindles.

[0017] In some embodiments of the present invention, a plurality of thorn-like protrusions are provided on the suture main body at intervals, and the thorn-like protrusions extend in a direction close to the stop structure.

[0018] The above technical solutions of the present invention have the following technical effects compared with the prior art:

[0019] In the medical suture provided by the present invention, a stop structure is included. At least two stop protrusions are arranged at the edge position of the stop main body. After the suture passes through the tissue, it can be inserted into the tissue to realize the fixation of the suture relative to the tissue, eliminating the need for knotting operations and avoiding the loosening or rotation of the suture relative to the tissue. At the same time, since the stop main body is formed into an arc-shaped sheet structure, when the suture is tightened after passing through the tissue, the arc-shaped stop main body can deform to generate an elastic force and act on the tissue in contact with it, realizing reliable connection and fixation with the tissue. In addition, the stop protrusions are rotationally symmetrically connected to the stop main body, and the distances between the two stop protrusions from the center line of the suture main body are the same, which can make the piercing forces received by the tissues around the main wound surface of the tissue more uniform, avoiding problems such as tissue deformation caused by uneven force and reducing the quality of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the drawings, which will help to understand the purpose and advantages of the present invention, where:

[0021] Figure 1 is a schematic structural diagram of a specific embodiment of the medical suture of the present invention;

[0022] Figure 2 is a cross-sectional view of a specific embodiment of the medical suture of the present invention;

[0023] Figure 3 is a front view of a specific embodiment of the stop structure of the medical suture of the present invention;

[0024] Figure 4 is a schematic structural diagram of another specific embodiment of the medical suture of the present invention

[0025] Figure 5 is a schematic structural diagram of another specific embodiment of the medical suture of the present invention;

[0026] Figure 6 is a schematic structural diagram of tissue suture using the medical suture of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions of the present invention will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] As Figures 1-5 shown is a specific embodiment of the medical suture of the present invention, which is used for surgical suture operations to achieve the suture of damaged tissues. As Figure 1 , Figure 4 , Figure 5 shown, the suture includes a suture body 10 and a stop structure 20 located at the end of the suture body 10. The stop structure 20 includes a stop main body portion 21 and at least two stop protrusions 22. The central portion of the stop main body portion 21 is connected to the suture body 10. The stop main body portion 21 is formed into an arc-shaped sheet structure that protrudes outward away from the suture body 10. The stop protrusions 22 are rotationally symmetrically connected to the circumferential edge position of the stop main body portion 21. At least a part of the stop protrusions 22 protrudes from the side surface of the suture body 10 close to the suture body 10. The distances between any two of the stop protrusions 22 from the center line of the suture body 10 are the same. Among them, the center line of the suture body 10 is the connecting line of the rotational symmetry centers of its cross-section. The distance between the stop protrusion 22 and the center line of the suture body 10 is usually the distance L between the center line of the stop protrusion 22 and the center line of the suture body 10. For example, the distance L can be the distance between the center point of the stop protrusion 22 and the center point of the suture body 10 under the same cross-section.

[0032] In the above-mentioned stopping structure 20 of the medical suture, at least two stopping protrusions 22 are arranged at the edge position of the stopping main body 21, which can be inserted into the tissue after the suture passes through the tissue, realizing the relative fixation of the suture to the tissue, avoiding the knotting operation and preventing the suture from loosening or rotating relative to the tissue. At the same time, since the stopping main body 21 is formed into an arc-shaped sheet structure, when the suture is tightened after passing through the tissue, the arc-shaped stopping main body can deform to generate an elastic force and act on the tissue in contact with it, realizing reliable connection and fixation with the tissue. In addition, the stopping protrusions 22 are rotationally symmetrically connected to the stopping main body 21, and the distances between the two stopping protrusions 22 from the center line of the suture main body 10 are the same, which can make the piercing force received by the tissue around the main wound surface of the tissue (i.e., the wound surface through which the suture main body 10 penetrates the tissue) more uniform, avoiding problems such as tissue deformation caused by uneven stress and reducing the quality of the operation.

[0033] Specifically, in a specific embodiment, the suture main body 10, the stopping main body 21 and the stopping protrusions 22 of the suture are integrally formed of the same material. Specifically, the suture can be made of an absorbable or non-absorbable material with an elastic modulus between 1 MPa and 3 MPa. For example, the materials of the suture include but are not limited to absorbable materials such as PDO and PGA. Of course, for those skilled in the art, the above-mentioned suture main body 10, the stopping main body 21 and the stopping protrusions 22 can also be processed and formed separately and connected and fixed by processes such as heat welding / ultrasonic welding.

[0034] Specifically, in a specific embodiment, a hemispherical protrusion 211 protruding outward is provided in the central region of the surface of the stopping main body 21 away from the suture main body 10, and the hemispherical protrusion 211 is smoothly transitioned with its adjacent surface. The maximum thickness of the hemispherical protrusion 211 part is greater than the sheet thickness of other regions of the stopping main body 21, which can realize higher end adhesion and penetration resistance of the stopping structure 20 and avoid the central region of the stopping main body 21 being subjected to large force and turning over when pulling the suture. More specifically, the maximum thickness t1 of the stopping main body 21 in the region of the hemispherical protrusion 211 is 0.5 mm - 1 mm, and the thickness t2 of other regions of the stopping main body 21 is 0.5 mm - 0.7 mm.

[0035] Specifically, in a specific embodiment, the cross-section of the stopping main body 21 and the suture main body 10 is a rotationally symmetric figure, as Figure 2 shown, and the rotation axis of symmetry of the stopping main body 21 is the first longitudinal axis f1.

[0036] The relationship between the cross-sectional area S2 of the stop main body 21 and the cross-sectional area S0 of the suture main body 10 is: S2 = (3 - 5)S0. Since the cross-section of the suture main body 10 is also the main wound area of the tissue to be sutured, and since the cross-sectional area of the stop main body 21 is more than 3 times that of the suture main body 10, it can be reliably fixed on the tissue without the problem of the stop structure 20 penetrating the tissue.

[0037] More specifically, the suture main body 10 is linear extending along its length direction, and its cross-section is a polygon with a circular or approximately circular shape and a relatively blunt transition angle, which can make the main wound surface of the tissue form a relatively smooth rather than sharp incision. The cross-section of the stop main body 21 is one of a polygon, a circle, and a multi-angle shape; among them, for those skilled in the art, the polygons and multi-angle shapes in the present invention are approximate polygon and approximate multi-angle shapes, and are not exactly the polygons or multi-angle shapes in the standard mathematical figures. Among them, the adjacent sides of the polygon in the present invention can be transitioned through an arc area, and each side of the polygon can be a straight line, or a slightly concave or convex arc or broken line shape; the above shapes and their deformation forms all fall within the scope of protection of the present invention. Specifically, Figure 3 、 Figure 4 The cross-section of the stop main body 21 shown is a triangular star shape, Figure 5 The cross-section of the stop main body 21 shown is a circle.

[0038] Specifically, as Figure 2 shown, the stop protrusion 22 extends along the direction of the second longitudinal axis f2, the direction of the second axis is parallel to the direction of the first longitudinal axis f1, the stop protrusion 22 includes a connection area 221 and a piercing area 222 arranged continuously along the direction of the second longitudinal axis f2, wherein the connection area 221 is connected to the stop main body 21, and the piercing area 222 is used for piercing the tissue to be sutured, which is located on the side close to the suture main body 10. The cross-sectional area of the stop protrusion 22 gradually decreases from the connection area 221 to the piercing area 222, so that the contact area between the stop protrusion 22 and the tissue to be sutured is smaller, and the pressure generated under the same pulling force is larger, making it easier to pierce into the tissue.

[0039] Specifically, in an optional embodiment, the stop protrusion 22 is formed as a rotating body with the second longitudinal axis f2 as the rotation axis, and the distance L between the second longitudinal axis f2 and the first longitudinal axis f1 is 1 mm - 3 mm. The above distance range can ensure that there is a certain distance between the piercing part and the piercing area 222 of the tissue to be sutured and the main wound surface of the tissue, avoiding the problem that the distance between the piercing area 222 and the main wound surface of the tissue is too close, resulting in excessive damage to the tissue near the main wound surface and thus affecting wound healing.

[0040] Wherein, when the stop main body portion 21 is formed into a sheet body in the shape of an approximate polygon or an approximate multi-angle shape, the stop protrusion portion 22 is located in the end corner region of the polygon or the multi-angle shape, and the number of the stop protrusion portions 22 is equal to the number of sides of the polygon or the number of angles of the multi-angle shape. As Figure 3 , Figure 4 shown, the stop main body portion 21 is formed into a sheet body in the shape of an approximate triangular star, and three stop protrusion portions 22 are provided, which are respectively located in three end corner regions of the stop main body portion 21.

[0041] Specifically, in an optional implementation manner, as Figure 4 shown, the stop protrusion portion 22 is an inverted cone, and the region with a larger cross-sectional area of the inverted cone forms the connection region 221, and the region with a smaller cross-sectional area of the inverted cone forms the piercing region 222.

[0042] Specifically, in an optional implementation manner, as Figure 2 , Figure 5 shown, the stop protrusion portion 22 is a spindle, and the central region with a larger cross-sectional area of the spindle forms the connection region 221, and the region with a smaller cross-sectional area of the spindle located on the side close to the suture main body 10 forms the piercing region 222.

[0043] In order to further facilitate the piercing portion to pierce into the tissue, a groove is formed on the end face of the side of the stop protrusion portion 22 close to the suture main body 10. Specifically, the groove is located in the central region of the end face of the piercing portion, so that the end face of the piercing portion is formed into an annular end face, which further reduces the cross-sectional area of the piercing portion. When the suture is under tension, the pressure of the piercing portion piercing into the tissue is relatively large.

[0044] In one implementation manner, as Figure 6 shown, a plurality of thorn-like protrusions 11 are provided on the suture main body 10 at intervals, and the thorn-like protrusions 11 extend in a direction close to the stop structure 20.

[0045] As Figure 6 shown, when tissue suturing is performed, after passing the medical suture through the tissue, the stop protrusion portion 22 pierces into the tissue, and the tissue deforms under the extrusion of the stop protrusion portion 22, and the tissue in the middle region becomes thicker, so that the two sides of the tissue are closely attached between the stop main body portion 21 and the thorn-like protrusions 11, realizing the suture fixation of the tissue and the medical suture, and eliminating the need for the surgical operator to perform manual knotting operations.

[0046] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A medical suture, comprising a suture body and a stop structure located at the end of the suture body, characterized in that, The stop structure includes: A stop main body portion, the central portion of the stop main body portion is connected to the suture main body, and the stop main body portion is formed into an arc-shaped sheet structure that protrudes outward away from the suture main body; the stop main body portion can deform to generate an elastic force and act on the tissue in contact with it in a reaction force; At least two stop protrusions, the stop protrusions are rotationally symmetrically connected to the circumferential edge position of the stop main body portion, and at least part of the area protrudes from the surface of the suture main body portion close to the suture main body; The stop main body portion is formed into a rotationally symmetric body with the first longitudinal axis as the rotation axis; the stop protrusion extends along the second longitudinal axis direction, and the stop protrusion is formed into a rotationally symmetric body with the second longitudinal axis as the rotation axis. The distance L between the second longitudinal axis and the first longitudinal axis is 1 mm - 3 mm. The stop protrusion includes a connection area and a piercing area arranged along the second longitudinal axis direction, wherein the connection area is connected to the stop main body portion, and the piercing area is located on the side close to the suture main body and is used for piercing the tissue to be sutured. The cross-sectional area of the stop protrusion gradually decreases from the connection area to the piercing area.

2. The medical suture according to claim 1, characterized in that: The central area of the surface of the stop main body portion away from the suture main body has a hemispherical protrusion protruding outward, and the hemispherical protrusion is smoothly transitioned with the adjacent surface.

3. The medical suture according to claim 2, wherein: The cross-section of the stop main body portion is one of a polygon and a circle.

4. A medical suture according to claim 2, characterized in that: The cross-section of the stop main body portion is a polygon.

5. A medical suture according to claim 1, characterized in that: The stop protrusion is an inverted cone, and the area with a larger cross-sectional area of the inverted cone forms the connection area, and the area with a smaller cross-sectional area of the inverted cone forms the piercing area.

6. The medical suture according to claim 1, characterized in that: The stop protrusion is a spindle, and the central area with a larger cross-sectional area of the spindle forms the connection area, and the area of the spindle located on the side close to the suture main body and with a smaller cross-sectional area forms the piercing area.

7. A medical suture according to claim 1, characterized in that: A groove is formed on the end face of the stop protrusion on the side close to the suture main body.

8. A medical suture according to claim 1, characterized in that: The stop main body portion is formed into a sheet body in the shape of an approximate polygon, the stop protrusions are located in the end corner areas of the approximate polygon, and the number of the stop protrusions is equal to the number of sides of the approximate polygon.

9. A medical suture according to claim 1, characterized in that: The stop main body portion is formed into a sheet body in the shape of an approximate polygon, the stop protrusions are located in the end corner areas of the approximate polygon, and the number of the stop protrusions is equal to the number of corners of the approximate polygon.

10. A medical suture according to claim 1, characterized in that: The stop main body portion is formed into a sheet body in the shape of an approximate triangular star, three stop protrusions are provided, and are respectively located in the three end corner areas of the stop main body portion, and the stop protrusions are formed into spindles.

11. A medical suture according to claim 1, characterized in that: A number of thorn-like protrusions are provided on the suture main body, and the thorn-like protrusions extend in the direction close to the stop structure.

Images