Subcutaneous distractor and distracting assembly

Abstract

The utility model discloses a subcutaneous distractor and a distracting component, the subcutaneous distractor comprises a threading part, a trunk part and a tail part, and the threading part is provided with a thread passing hole for a suture to pass through; one end of the stem part is connected to one side of the threading part, the stem part is in a rod shape, and a plurality of barb-shaped structures with the top ends facing the threading part are arranged on the stem part; the tail part is arranged at the other end of the trunk part and used for being inserted into soft tissue. The distraction assembly comprises the subcutaneous distraction device and a suture. The suture passing hole of the subcutaneous distractor is used for a surgical suture to penetrate through, the barb-shaped structure of the stem structure plays a role in pulling tissue after implantation, and the tail part is used for being inserted into soft tissue. The distraction assembly fixes and distraction subcutaneous tissue through the subcutaneous distraction device and the suture, achieves wound surface reduction and indirect skin traction, and has the advantages that operation is easy, wound holes are rapidly closed, doctors do not need to suture and pull the subcutaneous tissue conveniently, complications are reduced, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a subcutaneous distractor and a distraction assembly. Background Art

[0002] Skin defect is a very difficult problem that surgeons often need to deal with clinically. The common causes of skin defects include tumors, scars, trauma, inflammation, and skin diseases. Wounds with large-area skin defects cannot be directly sutured. At present, the main clinical treatment methods for skin defects at home and abroad include skin grafting, skin flap transplantation, artificial skin, skin expansion, skin stretching, etc. Among them, the common treatment methods are skin flap transplantation or skin expansion. The operations are complex and have high complications.

[0003] At present, most distractors on the market act on the skin surface and only stretch the skin surface, which has a good effect on small and shallow wounds. However, for wounds with deeper surfaces, doctors need to perform distraction sutures on various subcutaneous tissues. The operation is complex and has high complications. Summary of the Utility Model

[0004] The purpose of this application is to provide a subcutaneous distractor and a distraction assembly to solve the problems raised in the above background art.

[0005] To achieve the above purpose, this application provides the following technical solutions:

[0006] A subcutaneous distractor, comprising:

[0007] A threading part, which is provided with a threading hole for a suture to pass through;

[0008] A stem part, one end of which is connected to one side of the threading part. The stem part is rod-shaped, and a plurality of barbed structures with their tops facing the threading part are provided on the stem part;

[0009] A tail part, which is arranged at the other end of the stem part and is used for inserting into soft tissues.

[0010] Further, a plurality of the barbed structures are evenly distributed along the axial direction of the stem part, and the barbed structures on both sides of the axis of the stem part are arranged staggeredly.

[0011] Further, a plurality of the barbed structures are evenly distributed along the axial direction of the stem part, and a plurality of the barbed structures are arranged symmetrically with respect to the axis of the stem part one by one.

[0012] Further, a plurality of the barbed structures are arranged at intervals in a spiral shape on the stem part.

[0013] Further, the barbed structure is in the shape of a needle, a thorn or a tooth.

[0014] Further, the wire threading part is in a circular ring shape or an elliptical ring shape, and the center of the wire threading part is hollow to form the wire passing hole.

[0015] Further, the tail part is in a needle shape or a wedge shape.

[0016] Further, the stem part is in a cylindrical shape or a columnar structure with at least one plane on the side surface.

[0017] Further, the subcutaneous distractor is made of an absorbable material.

[0018] A distraction assembly, comprising:

[0019] A plurality of the subcutaneous distractors as described above, and the plurality of subcutaneous distractors are used for being staggeredly inserted into the tissues on both sides along the wound;

[0020] A suture, and the suture is used for sequentially passing through the plurality of subcutaneous distractors on both sides of the wound in a crossed manner.

[0021] In summary, the technical effects and advantages of the present utility model are as follows:

[0022] The wire passing hole of the subcutaneous distractor of the present utility model is used for the surgical suture to pass through. The barbed structure of the stem part plays a pulling role on the tissue after implantation, and the tail part is used for inserting into the soft tissue; the distraction assembly of the present utility model fixes and distracts the subcutaneous tissue through the subcutaneous distractor and the suture, realizes the reduction of the wound surface and indirectly pulls the skin, and has the characteristics of simple operation, rapid closure of the wound hole, convenient operation for doctors without suturing and pulling the subcutaneous tissue, and reduction of complications. Description of the Drawings

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

[0024] Figure 1 Structural schematic diagram of the subcutaneous distractor in Embodiment 1 of the present utility model Figure One ;

[0025] Figure 2 Structural schematic diagram of the subcutaneous distractor in Embodiment 1 of the present utility model Figure Two ;

[0026] Figure 3 Structural schematic diagram of the subcutaneous distractor in Embodiment 1 of the present utility model Figure Three ;

[0027] Figure 4Structural schematic of the subcutaneous distractor in Embodiment 1 of the present utility model Figure Four ;

[0028] Figure 5 Structural schematic of the subcutaneous distractor in Embodiment 1 of the present utility model Figure Five ;

[0029] Figure 6 Structural schematic of the subcutaneous distractor in Embodiment 1 of the present utility model Figure Six ;

[0030] Figure 7 Implantation schematic of the distraction assembly in Embodiment 2 of the present utility model;

[0031] Figure 8 Schematic of the wound closure after the implantation of the distraction assembly in Embodiment 2 of the present utility model;

[0032] Figure 9 Schematic of the single - layer use of the subcutaneous distractor in Embodiment 2 of the present utility model;

[0033] Figure 10 Schematic of the double - layer use of the subcutaneous distractor in Embodiment 2 of the present utility model.

[0034] Wherein:

[0035] 01, tissue; 02, wound;

[0036] 1, subcutaneous distractor; 11, threading part; 111, wire - passing hole; 12, stem; 121, barbed structure; 13, tail;

[0037] 2, suture. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] In the description of the present utility model, 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. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the system or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1

[0043] This embodiment provides a subcutaneous retractor, as Figures 1-6 shown. The subcutaneous retractor includes a thread-passing part 11, a stem part 12, and a tail part 1. The thread-passing part 11 is provided with a thread-passing hole 111 for a suture 2 to pass through. One end of the stem part 12 is connected to one side of the thread-passing part 11. The stem part 12 is rod-shaped, and a plurality of barbed structures 121 with their tops facing the thread-passing part 11 are provided on the stem part 12. The tail part 13 is provided at the other end of the stem part 12, and the tail part 13 is used for inserting into soft tissue.

[0044] The thread-passing hole 111 of the subcutaneous retractor 1 in this embodiment is for the surgical suture 2 to pass through. The barbed structures 121 of the stem part 12 play a pulling role on the tissue 01 after implantation. The tail part 13 is used for inserting into soft tissue. The subcutaneous retractor and the suture fix and retract the subcutaneous tissue, realizing wound surface reduction and indirect skin retraction, and having the characteristics of simple operation, rapid wound closure, convenient for doctors to operate without suturing and retracting the subcutaneous tissue, and reducing complications.

[0045] Optionally, as Figure 1 and 2 shown, a plurality of barbed structures 121 are uniformly distributed along the axial direction of the stem part 12, and the barbed structures 121 on both sides of the axis of the stem part 12 are arranged staggeredly. As Figure 2As shown, barbs can be added to the barbed structure 121 to increase the pulling force of the barbed structure 121 on the surrounding tissue 01.

[0046] Optionally, in other embodiments, as Figure 3 shown, multiple barbed structures 121 are uniformly distributed along the axial direction of the stem 12, and the multiple barbed structures 121 are symmetrically arranged in pairs with respect to the axis of the stem 12. Alternatively, as Figure 4 shown, multiple barbed structures 121 are arranged at intervals in a spiral shape on the stem 12.

[0047] Furthermore, the barbed structure 121 is in the shape of a needle, thorn, or tooth, etc. The specific shape of the barbed structure 121 in this embodiment is not limited as long as it can pull the surrounding tissue 01.

[0048] Optionally, as Figure 1 or Figure 5 shown, the threading part 11 is in a circular or elliptical ring shape, and the center of the threading part 11 is hollow to form a threading hole 111. When inserting into the tissue 01 on both sides of the wound 02, the threading part 11 is outside the tissue 01, facilitating the operation of threading the suture 2. The outer periphery of the circular or elliptical ring-shaped threading part 11 is smooth, which can reduce the damage of the threading part 11 to the tissue 01 after tensioning.

[0049] Optionally, as Figure 4 or Figure 6 shown, the insertion structure is in the shape of a needle or a wedge, with a relatively sharp insertion structure, facilitating insertion into the tissue 01.

[0050] Optionally, the stem 12 is in a cylindrical shape or a columnar structure with at least one flat surface on the side, which can prevent the stem 12 from rotating and ensure the stability of the stem 12 after insertion into the tissue. As Figure 1 and Figure 6 shown, the cross-section of the threading part 11, the stem 12, and / or the tail part 13 is circular or oblate with flat upper and lower surfaces, which is beneficial for the insertion of the stem 12 and the tail part 13 and reduces the damage of the threading part 11 to the tissue 01.

[0051] The subcutaneous tensioner 1 of this embodiment is made of an absorbable material, manufactured using machining or injection molding processes, and is entirely made of an absorbable material, eliminating the need for removal and suture removal.

[0052] Embodiment Two

[0053] This embodiment provides a tensioning assembly, including multiple subcutaneous tensioners 1 and sutures 2 as described above. The multiple subcutaneous tensioners 1 are used to be inserted into the tissue 01 on both sides of the wound 02 in a staggered manner, and the suture 2 is used to sequentially cross through the multiple subcutaneous tensioners 1 on both sides of the wound 02.

[0054] As Figures 7-10As shown, multiple subcutaneous stretchers 1 are inserted into the tissues 01 on both sides of the wound 02 in an interlaced manner. Sutures 2 are sequentially crossed through multiple subcutaneous stretchers 1 on both sides of the wound 02, and the sutures 2 are tightened to close the wound 02. The sutures 2 in this embodiment are also absorbable sutures 2, and there is no need to remove the sutures.

[0055] When in use, align the tail 13 of the subcutaneous stretcher 1 with the part of the tissue 01 that needs to be stretched and insert it. When entering the tissue 01, the barbed structure 121 will move closer to the center of the trunk 12 according to the force. After the subcutaneous stretchers 1 that meet the number of surgical requirements are implanted on both sides of the wound 02, the absorbable suture 2 is inserted into the thread hole 111 of the subcutaneous stretcher 1 through the surgical instrument, and then the tissue 01 is kneaded and pushed and the absorbable suture 2 is tightened to achieve the stretching of the tissue 01 through the barbed structure 121, as shown in Figure 8 As shown, the wound 02 is closed.

[0056] Furthermore, the wound 02 is provided on both sides as follows Figure 9 a layer of staggered subcutaneous distraction device 1 or as Figure 10 The multi-layer staggered subcutaneous stretcher 1 shown. The subcutaneous stretcher 1 can be used in a single layer or multiple layers according to the actual wound 02 conditions.

[0057] The stretching assembly of this embodiment fixes and stretches the subcutaneous tissue 01 through the subcutaneous stretcher 1 and the suture 2, thereby reducing the wound surface and indirectly stretching the skin. It has the characteristics of easy operation, rapid wound closure, convenient operation for doctors, no need to suture and stretch the subcutaneous tissue 01, no need to remove and remove the sutures, and reduced complications.

[0058] Finally, it should be noted that the above are only preferred implementation modes of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned implementation modes, those skilled in the art can still modify the technical solutions described in the aforementioned implementation modes or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A subcutaneous stretcher, characterized in that: include: A threading portion (11), wherein the threading portion (11) is provided with a thread hole (111) for the suture (2) to pass through; A stem (12), one end of the stem (12) being connected to one side of the threading portion (11), the stem (12) being rod-shaped, and the stem (12) being provided with a plurality of barb-shaped structures (121) with their top ends facing the threading portion (11); A tail portion (13) is arranged at the other end of the trunk (12) and is used for inserting into soft tissue.

2. The subcutaneous distraction device according to claim 1, characterized in that: The plurality of barb-like structures (121) are evenly distributed along the axial direction of the trunk (12), and the barb-like structures (121) on both sides of the axis of the trunk (12) are staggered.

3. The subcutaneous distraction device according to claim 1, characterized in that: The plurality of barb-like structures (121) are evenly distributed along the axial direction of the trunk (12), and the plurality of barb-like structures (121) are symmetrically arranged one by one relative to the axis of the trunk (12).

4. The subcutaneous distraction device according to claim 1, characterized in that: The plurality of barb-like structures (121) are arranged at intervals in a spiral shape on the trunk (12).

5. The subcutaneous distraction device according to claim 1, characterized in that: The barb-like structure (121) is in the shape of a needle, a thorn or a tooth.

6. The subcutaneous distraction device according to claim 1, characterized in that: The threading portion (11) is in the shape of a circular ring or an elliptical ring, and the center of the threading portion (11) is hollow to form the threading hole (111).

7. The subcutaneous distraction device according to claim 1, characterized in that: The tail (13) is needle-shaped or wedge-shaped.

8. The subcutaneous stretcher according to claim 1, characterized in that: The trunk (12) is cylindrical or has at least one planar columnar structure on its side.

9. The subcutaneous distraction device according to claim 1, characterized in that: The subcutaneous stretcher is made of absorbable material.

10. A stretching assembly, characterized in that: include: A plurality of subcutaneous stretchers (1) according to any one of claims 1 to 9, wherein the plurality of subcutaneous stretchers (1) are used to be inserted alternately into the tissues (01) on both sides along the wound (02); A suture (2), wherein the suture (2) is used to sequentially cross through the plurality of subcutaneous stretchers (1) on both sides of the wound (02).

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