Suture line with lockable end part and matched line feeding needle thereof

Abstract

The utility model discloses a suture line with a lockable end part and a thread feeding needle matched with the suture line. The suture line with the lockable end part comprises a barb suture line and is characterized in that a non-return structure is arranged at the end part of the barb suture line; the non-return structure is a limiting protrusion or an elastic expansion piece. The non-return structure is arranged at the end part of the suture line, so that the end part of the barb suture line can be conveniently stopped in the skin after penetrating through the skin. A suture feeding needle matched with a suture line with a lockable end comprises a needle body and is characterized in that the head end of the needle body is a sharp end, the needle body is provided with a suture feeding channel, the outer side of the needle body is provided with a groove where a non-return structure is embedded, the groove is provided with a suture outlet, and the suture outlet is communicated with the suture feeding channel; the end part of the barb suture line extends out of the line outlet, the end part of the barb suture line is bent in a U shape, and the non-return structure is positioned in the groove and is fixed by the sliding limiting sleeve. By optimizing the structure of the needle body, non-fixed connection between the suture line and the needle body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment machinery, in particular to a suture thread and a thread feeding needle thereof. Background Art

[0002] Skin suturing refers to a surgical procedure that repairs a patient's broken or damaged skin and heals the wound by suturing with surgical sutures.

[0003] Existing sutures need to be fixed by tying knots, which cannot reduce the tension on the skin. Obvious scars are left after the wound heals, and adverse reactions such as scar widening and hyperplasia occur, affecting the patient's function and appearance.

[0004] In order to avoid the above problems, knot-free sutures were born. Existing knot-free sutures are generally made by evenly distributing barbs on the thread body. They are divided into unidirectional and bidirectional barbed sutures. They change the concept that traditional sutures require knotting, are easy to use, save trouble, and improve surgical efficiency.

[0005] However, traditional knot-free sutures are fixedly connected to the thread feed needle and the suture (such as a bidirectional barbed knot-free suture with publication number CN212037629U). After the thread feed needle penetrates the skin, it drives the suture through the skin, and the skin suture tension-reducing effect is poor, and the suture and the thread feed needle need to be cut off later.

[0006] Currently, there is a lack of tension-reducing sutures and matching wire feed needles that are independently arranged for the sutures and wire feed needles. Utility Model Content

[0007] In view of the problems existing in the prior art, the utility model provides a suture thread with lockable ends and a matching thread feeding needle to solve at least one of the above technical problems.

[0008] In order to achieve the above-mentioned object, the utility model provides an end-lockable suture, including a barbed suture, characterized in that a non-return structure is provided at the end of the barbed suture;

[0009] The non-return structure is a limiting protrusion or an elastic expansion member.

[0010] The utility model provides a non-return structure at the end of the suture line, so that after the end of the barbed suture line passes through the skin, the barbed line stops in the skin. The suture line of the device does not need to be fixedly connected to the suture needle and does not need to be knotted, thus avoiding the problem that the tension caused by poor thread fixation affects the healing of scars.

[0011] Further preferably, the elastic expansion member includes circumferentially arranged limiting spikes;

[0012] The connection between the limiting thorn and the barbed suture thread is a tip structure.

[0013] The elastic expansion piece is convenient for preventing the elastic expansion piece from returning to the body surface after expansion. When the elastic expansion piece passes through the skin when compressed, it expands and prevents the elastic expansion piece from returning to the body surface.

[0014] Further preferably, the cross-section of the limiting protrusion is elliptical or polygonal.

[0015] Further preferably, the barbed suture is an absorbable suture.

[0016] A thread feeding needle for a suture thread with a lockable end, comprising a needle body, characterized in that the head end of the needle body is a pointed tip, the needle body is a hollow needle body, a thread feeding channel is provided on the needle body, a groove is provided on the outer side of the needle body to embed the non-return structure, a thread outlet is provided on the groove, and the thread outlet is communicated with the thread feeding channel;

[0017] The end of the barbed suture extends out of the outlet, and the end of the barbed suture is bent in a U shape, and the non-return structure is limited in the groove by a sliding limit sleeve.

[0018] The utility model realizes the non-fixed connection between the suture thread and the needle body by optimizing the structure of the needle body. When the thread feeding needle passes through the skin, the non-return structure is accommodated in the groove. After the end of the thread feeding needle passes through the skin, the end of the barbed suture thread rebounds. Under the action of the non-return structure, the thread feeding needle withdraws from the skin, and the suture thread is still set in the skin, and the tension-reducing suture fixation of the skin is realized. The thread feeding needle can pass through the skin once, and the suturing effect is achieved.

[0019] Further preferably, a spiral groove is formed on the outer wall of the needle body.

[0020] Further preferably, a mounting portion is provided at the tail portion of the needle body.

[0021] Easy to connect the drive parts.

[0022] Further preferably, the needle body is detachably connected to the mounting portion.

[0023] It is convenient to replace different installation parts and perform alignment.

[0024] Further preferably, the barbed suture is located inside the needle body, and the difference in length between the barbed suture and the needle body is less than 1 cm, preferably 5 mm. Preferably, the barbed suture is shorter than the length of the needle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a specific embodiment 1 of the end-lockable suture thread of the utility model;

[0026] Figure 2 This is a structural schematic diagram of a specific embodiment 1 of the end-lockable suture thread of the utility model;

[0027] Figure 3 This is a structural schematic diagram of a specific embodiment 1 of the end-lockable suture thread of the utility model;

[0028] Figure 4 This is a structural schematic diagram of a specific embodiment 1 of the end-lockable suture thread of the utility model;

[0029] Figure 5 This is a structural schematic diagram of a specific embodiment 1 of the end-lockable suture thread of the utility model;

[0030] Figure 6 This is a structural schematic diagram of a thread feeding needle in specific embodiment 3 of the utility model.

[0031] Among them: 1 is a stop structure, 2 is a wire feeding needle, 21 is a groove, and 3 is a sliding limit sleeve. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings.

[0033] See also Figures 1 to 5 , Specific embodiment 1, end-lockable suture, including barbed suture, the end of the barbed suture is provided with a non-return structure 1; the non-return structure 1 is a limiting protrusion or an elastic expansion member. The utility model provides a non-return structure at the end of the suture, so that the end of the barbed suture is stopped on the body surface after passing through the skin.

[0034] The elastic expansion piece includes circumferentially arranged limiting thorns; the connection between the limiting thorns and the barbed suture is a tip structure. It is convenient to realize that the elastic expansion piece stops on the body surface after expansion. When the elastic expansion piece passes through the skin when compressed, it expands to stop. The cross section of the limiting protrusion is elliptical or polygonal.

[0035] The barbed suture is an absorbable suture. The barbs on the barbed suture can be unidirectional or bidirectional. When the barbs on the barbed suture are bidirectional, the barbs in different directions can be arranged axially at intervals. Alternatively, the barbed suture is divided into two parts with different barb directions arranged along the axial direction.

[0036] See also Figure 1 The non-return structure 1 is an elastic expansion member. The tip structure faces the barbs of the barbed suture thread.

[0037] See also Figure 2 The non-return structure 1 is a limiting protrusion. The cross section of the limiting protrusion is a triangle.

[0038] See also Figure 3The non-return structure 1 is an elastic expansion member. The tip structure faces the side away from the barb of the barbed suture.

[0039] See also Figure 4 The non-return structure 1 is an elastic expansion member or a limiting protrusion. For example, the cross section is a rhombus. When the non-return structure is an elastic expansion member, the elastic expansion member is a rhombus structure formed by four strips connected together.

[0040] See also Figure 5 The non-return structure 1 is a hollow elliptical elastic expansion member or a solid granular limiting protrusion.

[0041] Specific embodiment 2, based on specific embodiment 1, the barbed suture is connected to another barbed suture through a breakable point; the outer diameter of the breakable point is smaller than the outer diameter of the barbed suture, so as to facilitate the integration of multiple sutures.

[0042] See also Figure 6 , Specific embodiment 3, a wire feeding needle 2 for a suture with a lockable end, comprises a needle body, the head end of the needle body is a pointed tip, the needle body is a hollow needle body, a wire feeding channel is provided on the needle body, a groove 21 embedded with a non-return structure is provided on the outer side of the needle body, a wire outlet is provided on the groove 21, and the wire outlet is connected to the wire feeding channel; the end of the barbed suture extends out of the wire outlet, and the end of the barbed suture is bent in a U shape, and the non-return structure is limited in the groove by a sliding limit sleeve 3, and the sliding limit sleeve 3 is slidably connected to the needle body. The sliding limit sleeve can be a plastic sleeve. The inner wall of the plastic sleeve is larger than the outer wall of the needle body. The sliding limit sleeve is convenient for the barbed suture to overcome its own elastic force and bend back.

[0043] The utility model realizes the non-fixed connection between the suture thread and the needle body by optimizing the structure of the needle body. When the thread feeding needle passes through the skin, the non-return structure is accommodated in the groove. After the end of the thread feeding needle passes through the skin, the end of the barbed suture thread rebounds. Under the action of the non-return structure, the thread feeding needle withdraws from the skin, and the suture thread is still set in the skin. The thread feeding needle can pass through the skin once, and the suturing effect can be achieved. When the thread feeding needle passes through the skin once, the sliding limit sleeve slides toward the side away from the needle tip.

[0044] The barbed suture is located inside the needle body, and the difference in length between the barbed suture and the needle body is less than 1 cm.

[0045] The outer wall of the needle body is provided with a spiral groove.

[0046] The tail of the needle body is provided with a mounting portion, which is convenient for docking with the driving part.

[0047] The needle body and the mounting part are detachably connected, so it is convenient to replace different mounting parts and perform alignment.

[0048] The needle body can be a straight needle or a curved needle. The curved needle is preferably an arc structure with a central angle less than 90°.

[0049] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A suture with lockable ends, including a barbed suture, characterized in that: The end of the barbed suture is provided with a non-return structure; The non-return structure is a limiting protrusion or an elastic expansion member.

2. The end-lockable suture according to claim 1, characterized in that: The elastic expansion member includes circumferentially arranged limiting spikes; The connection between the limiting thorn and the barbed suture thread is a tip structure.

3. The end-lockable suture according to claim 1, characterized in that: The cross section of the limiting protrusion is elliptical or polygonal.

4. The end-lockable suture according to claim 1, characterized in that: The barbed suture is an absorbable suture.

5. A thread feeding needle, which is matched with the end-lockable suture thread according to any one of claims 1 to 4, characterized in that: It comprises a needle body, the head end of the needle body is a pointed tip, the needle body is a hollow needle body, the needle body is provided with a wire feeding channel, the outer side of the needle body is provided with a groove embedded in the non-return structure, the groove is provided with a wire outlet, and the wire outlet is connected to the wire feeding channel; The end of the barbed suture extends out of the outlet, and the end of the barbed suture is bent in a U shape, and the non-return structure is limited in the groove by a sliding limit sleeve, and the sliding limit sleeve is slidably connected to the needle body.

6. The thread feeding needle according to claim 5, characterized in that: The outer wall of the needle body is provided with a spiral groove.

7. The thread feeding needle according to claim 5, characterized in that: The tail of the needle body is provided with a mounting portion.

8. The thread feeding needle according to claim 7, characterized in that: The needle body is detachably connected to the mounting portion.

9. The thread feeding needle according to claim 5, characterized in that: The barbed suture is located inside the needle body, and the difference in length between the barbed suture and the needle body is less than 1 cm.

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