Medical suture line and medical suture device
By designing a stop assembly with a stop portion and an anti-damage part in medical sutures, the problem of tissue damage caused by unreasonable suture stop structure in the prior art is solved, and the firm fixation of sutures on the tissue is achieved and The pressure is reduced.
Patent Information
- Application Number
- CN202322707160.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-10-09
AI Technical Summary
The unreasonable stop structure of existing medical sutures leads to a large stress on the tissue to be sutured, causing tissue damage.
Design a medical suture, including a suture body and a stop assembly, the stop assembly consists of a stop portion and a damage prevention part. The cross-sectional area of the stop portion is greater than the suture body, and the cross-sectional area of the damage prevention part is greater than the stop The thickness of the moving part and the damage prevention part is smaller than the stop part. The damage prevention part adopts a disc-shaped structure to reduce the contact area of the tissue, and the stop part has a higher end adhesion and penetration resistance.
The sutures are firmer and more secure in the tissue, reducing the risk of tissue damage, avoiding suture knotting operations, and reducing the pressure on the tissue.
Smart Images
Figure CN222130182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices and accessories, in particular to a medical suture thread which can prevent tissue rupture and avoid knotting. Background Art
[0002] Medical sutures are widely used in various surgical operations to suture wounds, connect tissues and ligate blood vessels. For a long time, technicians in this field have made many attempts to find new and better suture materials. Now there are many suture materials to choose from. For existing surgical suturing technology, tying the suture knot after the wound is pierced with a needle and the effect after the knot has always been an inevitable problem. At present, the surgical effect is more dependent on the hands of the surgeon. The size and quality of the suture knot also determine the healing of the wound after suturing. Therefore, it is necessary to develop a technology for medical sutures that can be used without tying knots.
[0003] Even though major domestic and foreign manufacturers are trying to develop various forms of knot-free sutures, the current products that can be used in actual clinical practice are still not optimistic. Currently, most of the developers and manufacturers add a stopper structure to the tail of the suture to achieve knot-free. The stopper is mostly in the form of a polygonal cross-section. This form of suture can achieve the effect of knot-free, but due to the limitation of the suture diameter, the polygonal cross-section is usually not very large. After suturing, the cross-section will generate a large force pressure with the skin or tissue, especially when performing liver organoid surgical suturing, which is easy to cause tissue damage at the contact part of the cross-section. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the unreasonable stop structure of the existing medical suture thread causes the tissue to be sutured to be subjected to a large force and causes tissue damage.
[0005] In view of the above technical problems, the utility model provides the following technical solutions:
[0006] A medical suture comprises: a suture body; a stop assembly connected to one side end of the suture body, comprising a stop portion and an anti-damage portion connected in sequence, the anti-damage portion being located between the stop portion and the suture body; the outer contours of the cross sections of the stop portion and the anti-damage portion are polygonal, circular or elliptical; wherein the thickness of the stop portion is greater than the thickness of the anti-damage portion, the cross-sectional area of the anti-damage portion is greater than the cross-sectional area of the stop portion, and the cross-sectional area of the stop portion is greater than the cross-sectional area of the suture body.
[0007] In some embodiments of the present invention, the anti-damage portion is formed into a disc shape, which includes a flat area located in the central area and a curved area surrounding the outside of the flat area, and the inner curved surface of the curved area faces the suture body.
[0008] In some implementation modes of the present invention, the arc surface area and the plane area transition smoothly, and a transition angle between the surface of the arc surface area and the surface of the plane area is an obtuse angle.
[0009] In some implementation modes of the present invention, the thickness of the arc surface area gradually becomes thinner from the middle to the edge.
[0010] In some embodiments of the present invention, the cross-sectional area S of the plane area 1-1 The relationship between the cross-sectional area S1 of the outer contour of the anti-damage part is: S1 = (1.5-2)S 1-1 .
[0011] In some embodiments of the utility model, the outer contours of the cross sections of the stop portion and the anti-damage portion are polygonal, the number of sides of the polygon of the stop portion is greater than or equal to 3, and the number of sides of the polygon of the anti-damage portion is greater than or equal to 4.
[0012] In some implementations of the present invention, the outer contours of the cross sections of the stop portion and the anti-damage portion are regular polygons, and the center lines of the stop portion and the anti-damage portion coincide with each other.
[0013] In some implementations of the present invention, the longitudinal center line of the suture body coincides with the center lines of the stop portion and the anti-damage portion.
[0014] In some implementations of the present invention, the relationship between the thickness t1 of the anti-damage portion and the thickness t2 of the stop portion is: t2 = (3-3.5) t1.
[0015] In some implementations of the present invention, the relationship between the cross-sectional area S2 of the stopper and the cross-sectional area S0 of the suture body is: S2 = (3-5) S0.
[0016] In some implementations of the present invention, the relationship between the cross-sectional area S1 of the damage-preventing portion and the cross-sectional area S0 of the suture body is: S1 = (5-10) S0.
[0017] In some embodiments of the present invention, the surface of the suture body includes a plurality of thorn-like protrusions arranged at intervals, and the thorn-like protrusions extend in a direction approaching the stop assembly.
[0018] In some implementation modes of the present invention, the suture body and the stop assembly are integrally formed.
[0019] The utility model also provides a medical suturing device, comprising the medical suturing thread and a suturing needle arranged at one end of the medical suturing thread.
[0020] The technical solution of the utility model has the following technical effects compared with the prior art:
[0021] In the medical suture provided by the utility model, a stop assembly is arranged at one end of the suture body, and the stop assembly includes a stop part with a small cross section and a large thickness, which can achieve a high end adhesion and penetration resistance, and can make the suture more firmly fixed on the tissue, without the doctor needing to perform a knotting operation. At the same time, the part in contact with the tissue adopts an anti-damage part with a large cross section and a thin thickness, which can reduce the pressure acting on the tissue and prevent tissue damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein:
[0023] Figure 1 This is a schematic structural diagram of a specific implementation of the medical suture thread of the utility model;
[0024] Figure 2 This is a front view of a specific implementation of the medical suture thread of the utility model;
[0025] Figure 3 It is a right side view of a specific embodiment of the medical suture thread of the utility model;
[0026] Figure 4 It is a schematic diagram of a specific implementation of the anti-damage portion in the medical suture thread of the utility model;
[0027] Figure 5 A cross-sectional view of a specific embodiment of the medical suture of the utility model
[0028] Figure 6 The utility model is a schematic structural diagram of a specific implementation of the medical suturing device. DETAILED DESCRIPTION
[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0033] like Figure 1-Figure 5 The figure shows a specific embodiment of the medical suture provided by the utility model, which is used for closing wounds, pulling tissues together, tightening tissues, attaching repair devices, etc. Figure 1 As shown, the medical suture 100 includes a suture body 10 and a stop assembly 20 connected to one side end of the suture body 10, wherein the suture body 10 is a wire structure with a regular cross-section (such as a circle, a regular polygon, etc.), and has a longitudinal center line c; the stop assembly 20 includes a stop portion 21 and an anti-damage portion 22 connected in sequence, and the anti-damage portion 22 is located between the stop portion 21 and the suture body 10; in one embodiment, the suture body 10, the stop portion 21 and the anti-damage portion 22 are made of the same material, for example, PPDO / PDO and other degradable materials are used to achieve one-piece molding; of course, the stop assembly 20 can also be processed and molded separately from the suture body 10, and the two parts are connected and fixed by processes such as heating fusion / ultrasonic welding. Among them, the outer contours of the cross sections of the stop portion 21 and the anti-damage portion 22 are polygonal, circular or elliptical; wherein the thickness of the stop portion 21 is greater than the thickness of the anti-damage portion 22, the cross-sectional area of the anti-damage portion 22 is greater than the cross-sectional area of the stop portion 21, and the cross-sectional area of the stop portion 21 is greater than the cross-sectional area of the suture body 10.
[0034] In the above-mentioned medical suture 100, the stop part 21 with a smaller cross-section and a larger thickness in the stop component 20 can achieve higher end adhesion and penetration resistance. At the same time, the part in contact with the tissue adopts an anti-damage part 22 with a larger cross-section and a thinner thickness. When the above-mentioned medical suture 100 is sutured with tissue, the stop component 20 part can be more firmly fixed on the tissue, and the doctor does not need to perform a knotting operation; at the same time, the part in contact with the tissue has a larger cross-section and a smaller thickness, so that the pressure acting on the tissue is reduced to prevent tissue damage.
[0035] Specifically, in an optional implementation manner, Figure 1 , Figure 2 and Figure 4 As shown, the anti-injury portion 22 is formed into a disc shape, which includes a plane area 22a located in the central area and a curved area 22b surrounding the outside of the plane area 22a, and the curved area 22b is bent toward the side of the suture body 10. The cross section of the plane area 22a is perpendicular to the longitudinal center line c of the suture body 10. When suturing tissue, the central area of the anti-injury portion 22 is subjected to a larger tensile force, and the middle area is in closer contact with the tissue. By setting the edge of the anti-injury portion 22 as a bending structure with an arc feature, a reaction force and air barrier are formed, so that the area can have less direct contact with the tissue and avoid scratching the tissue by the thinner edge part.
[0036] Specifically, in an optional implementation manner, Figure 4 As shown, the arc area 22b and the plane area 22a of the anti-damage portion 22 have a smooth transition, and the transition angle α between the surface of the arc area 22b and the surface of the plane area 22a is an obtuse angle to avoid the tip of the outer edge of the arc area 22b acting on the tissue surface when the transition angle is too small.
[0037] Specifically, in an optional embodiment, the thickness of the arc surface area 22b of the anti-damage portion 22 gradually becomes thinner from the middle to the edge, so that the edge of the arc surface area 22b has greater flexibility to further prevent tissue damage.
[0038] Specifically, the cross-sectional area S of the plane region 22a is 1-1 The relationship between the cross-sectional area S1 of the outer contour of the anti-damage portion 22 is: S1 = (1.5-2)S 1-1 The cross-sectional area of the plane region 22a is relatively large, so that the contact area with the tissue is larger and the pressure on the tissue is smaller.
[0039] In an optional embodiment, the outer contours of the cross sections of the stopper 21 and the damage-preventing portion 22 are polygonal, the stopper 21 is integrally formed as a polygonal prism, the damage-preventing portion 22 is integrally formed as a polygonal disk, the number of sides of the polygon of the stopper 21 is greater than or equal to 3, and the number of sides of the polygon of the damage-preventing portion 22 is greater than or equal to 4. Figure 4 As shown, the stopper 21 is in the shape of a triangular prism, and the anti-damage part 22 is a quadrilateral disk. More specifically, the outer contours of the cross sections of the stopper 21 and the anti-damage part 22 are regular polygons, for example, the stopper 21 is a prism with a regular triangle cross section, and the anti-damage part 22 is a square disk.
[0040] The center line of the stopper 21 coincides with the center line of the anti-damage part 22. More specifically, the longitudinal center line c of the suture body 10 coincides with the center lines of the stopper 21 and the anti-damage part 22. In this way, when the suture body 10 is pulled, the position acting on the stopper assembly 20 is located at its center (i.e., the center of gravity), so that the force uniformity of the stopper assembly 20 is better and the force acting on the tissue is uniform.
[0041] Specifically, in an optional implementation manner, Figure 2 As shown, the relationship between the thickness t1 of the anti-damage portion 22 and the thickness t2 of the stopper portion 21 is: t2 = (3-3.5) t1, for example, t2 = 3t1. Figure 3 As shown, the relationship between the cross-sectional area S2 of the stopper 21 and the cross-sectional area S0 of the suture body 10 is: S2 = (3-5) S0. The relationship between the cross-sectional area S1 of the anti-damage portion 22 and the cross-sectional area S0 of the suture body 10 is: S1 = (5-10) S0. That is, the cross-sectional area of the suture body 10 is also the wound area of the tissue to be sutured. Since the cross-sectional area of the stopper 21 and the anti-damage portion 22 is more than 5 times the cross-sectional area of the suture body 10, they can be reliably fixed on the tissue, and there will be no problem of the stopper assembly 20 penetrating the tissue.
[0042] Specifically, in an optional embodiment, the surface of the suture body 10 includes a plurality of thorn-like protrusions 11 arranged at intervals, and the cross-section of the thorn-like protrusion 11, i.e., the end, gradually becomes smaller, gradually forming a protrusion structure with a pointed tip, wherein the thorn-like protrusion 11 has a certain extension length, and extends in a direction close to the stop assembly 20, and when suturing, the thorn-like protrusion 11 forms a barb to cooperate with the tissue when suturing the tissue, thereby preventing the suture from slipping. In other alternative embodiments, the suture body 10 can also be a wire body structure with a smooth surface, wherein the cross-section of the wire body can be circular, elliptical, or regular polygonal, etc.
[0043] Reference Figure 6The figure shows a specific embodiment of the medical suturing device provided by the utility model, which comprises a medical suture thread 100 and a suture needle 200 arranged at one end of the medical suture thread 100. The medical suture thread 100 is a unidirectional barbed suture thread with a thorn-like protrusion 11.
[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled 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 list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.
Claims
1. A medical suture, characterized in that: include: Suture body; A stopper assembly connected to one end of the suture body, comprising a stopper portion and an anti-damage portion connected in sequence, wherein the anti-damage portion is located between the stopper portion and the suture body; The outer contours of the cross-sections of the stop portion and the anti-damage portion are polygonal, circular or elliptical; wherein the thickness of the stop portion is greater than the thickness of the anti-damage portion, the cross-sectional area of the anti-damage portion is greater than the cross-sectional area of the stop portion, and the cross-sectional area of the stop portion is greater than the cross-sectional area of the suture body.
2. A medical suture according to claim 1, characterized in that: The anti-damage portion is formed into a disc shape, which includes a plane area located in the central area and a curved surface area surrounding the outer side of the plane area, and the inner curved surface of the curved surface area faces the side of the suture body.
3. A medical suture according to claim 2, characterized in that: The arc surface area and the plane area transition smoothly, and a transition angle between the surface of the arc surface area and the surface of the plane area is an obtuse angle.
4. A medical suture according to claim 3, characterized in that: The thickness of the arc surface area gradually becomes thinner from the middle to the edge.
5. The medical suture according to claim 2, characterized in that: The cross-sectional area S of the plane region 1-1 The relationship between the cross-sectional area S1 of the outer contour of the anti-damage part is: S1 = (1.5-2)S 1-1 .
6. The medical suture according to claim 1, characterized in that: The outer contours of the cross sections of the stopper and the anti-damage portion are polygonal, the number of sides of the polygon of the stopper is greater than or equal to 3, and the number of sides of the polygon of the anti-damage portion is greater than or equal to 4.
7. The medical suture according to claim 6, characterized in that: The outer contours of the cross sections of the stopper and the damage-preventing portion are regular polygons, and the center lines of the stopper and the damage-preventing portion coincide with each other.
8. The medical suture according to claim 7, characterized in that: The longitudinal centerline of the suture body coincides with the centerlines of the stop portion and the atraumatic portion.
9. The medical suture according to claim 1, characterized in that: The relationship between the thickness t1 of the damage-preventing portion and the thickness t2 of the stopper portion is: t2=(3-3.5)t1.
10. The medical suture according to claim 1, characterized in that: The relationship between the cross-sectional area S2 of the stopper and the cross-sectional area S0 of the suture body is: S2 = (3-5) S0.
11. The medical suture according to claim 1, characterized in that: The relationship between the cross-sectional area S1 of the damage-preventing portion and the cross-sectional area S0 of the suture body is: S1 = (5-10) S0.
12. The medical suture according to claim 1, characterized in that: The surface of the suture body includes a plurality of thorn-shaped protrusions arranged at intervals, and the thorn-shaped protrusions extend toward a direction approaching the stop assembly.
13. The medical suture according to claim 1, characterized in that: The suture body and the stop assembly are integrally formed.
14. A medical suturing device, characterized in that: It comprises the medical suture thread described in any one of claims 1 to 13, and a suture needle arranged at one end of the medical suture thread.