Anchoring type skin grafting fixator with line

Abstract

The anchoring type skin grafting fixator with the line comprises a shell (1), a movable handle (2) is arranged on one side of the shell (1), a nail pressing mechanism (3) and a nail seat (4) used for containing a fixing nail are arranged in the shell (1), one end of the fixing nail is connected with a pull line (5), a first winding body (6) is arranged on the side portion of the nail seat (4), and a second winding body (7) is arranged on the inner wall of the shell (1). The bottom of the shell (1) is provided with a wire storage bin (8), one end of the pull wire (5) sequentially winds around the first winding body (6) and the second winding body (7), and one end of the pull wire (5) is arranged in the wire storage bin (8). The stay wire is preset on the fixing nail, so that the fixing nail and the stay wire are arranged at the same time, the wiring convenience is effectively improved, and the operation process is simplified.

Description

Technical Field

[0001] This invention relates to the field of skin stapler technology, and more specifically to a suture anchoring skin graft fixation device. Background Technology

[0002] In skin graft repair surgery, the close fit between the grafted tissue and the original skin of the recipient area is a key prerequisite for ensuring the quality of wound healing. The core requirement is to reduce the gap between the graft and the recipient area through stable compression, thereby promoting tissue fusion and blood revascularization.

[0003] To achieve this goal, the mainstream fixation method in existing technologies involves firstly using traditional suture fixation. This method involves puncturing the skin graft and recipient skin with a suture needle, placing a sponge pad on the graft surface, and then tightening and tying multiple strands of sutures together. The tension of the sutures helps to achieve adhesion and fixation between the graft and the recipient area. However, the traditional method of suture placement is significantly cumbersome and inconvenient. To achieve effective suture fixation, the operator must hold the suture needle and puncture the graft edge and recipient skin point by point. Each puncture site requires a separate suture section, and the suture path and tightness must be repeatedly adjusted. For larger graft wounds, multiple sets of multi-strand sutures are often required, with each set undergoing a repetitive process, making the operation lengthy and complex. This cumbersome placement method not only significantly increases surgical time but also fails to meet the urgent clinical need for rapid fixation. Summary of the Invention

[0004] The purpose of this invention is to provide a suture anchoring skin graft fixator. This invention achieves simultaneous installation of the fixation pin and the suture by pre-setting a pull wire on the fixation pin, effectively improving the convenience of wiring and simplifying the operation process.

[0005] The technical solution of the present invention: a suture anchoring skin graft fixator includes a housing, a movable handle on one side of the housing, a nail pressing mechanism and a nail seat for placing the fixation nail inside the housing, one end of the fixation nail being connected to a pull wire, a first winding body on the side of the nail seat, and a second winding body on the inner wall of the housing; the bottom of the housing has a suture storage compartment, one end of the pull wire passing through the first winding body and the second winding body in sequence, and one end of the pull wire being disposed in the suture storage compartment.

[0006] In the above-mentioned wire-anchored skin graft fixation device, the first winding body includes a roller body disposed on the side of the nail seat, the pull wire is disposed around the roller body, and the end of the roller body is provided with a connecting plate, which is connected to the side of the nail seat by screws.

[0007] In the aforementioned wire-anchored skin graft fixation device, the second winding body includes a pair of fixing rods disposed on the inner wall of the outer shell, and a pair of rotatable cylindrical shafts are provided between the fixing rods on both sides, and the pull wire passes through the gap between the two cylindrical shafts.

[0008] In the aforementioned wire-anchored skin graft fixation device, the wire storage compartment and the outer shell are an integral structure.

[0009] In the aforementioned suture anchoring skin graft fixation device, the suture storage compartment has a suture inlet at the end facing the needle outlet of the outer shell, and a one-way component is provided at the suture inlet to facilitate suture release.

[0010] In the aforementioned suture anchoring skin graft fixation device, the one-way component includes a bushing disposed on one side of the suture inlet, a rotating shaft connected to the bushing via a torsion spring, a one-way plate at the end of the rotating shaft, and a fixing plate abutting against the one-way plate on the other side of the suture inlet.

[0011] In the aforementioned wire-anchored skin graft fixation device, the inner wall of the suture compartment has symmetrically arranged limiting bodies, and the pull wire is disposed between the two limiting bodies.

[0012] In the aforementioned wire-anchored skin graft fixation device, the side of the outer shell has a through groove, one side of the through groove has a pair of slots, and the other side of the through groove has a snap-fit; a cover plate is provided in the through groove, one side of the cover plate has an elastic support that fits into the snap-fit, and the other side of the cover plate has a bottom support that fits into the slot.

[0013] In the aforementioned suture anchoring skin graft fixation device, the pusher of the nail seat has a vertical plate on its side, and a rotatable positioning plate is provided at the upper end of the vertical plate. The positioning plate has a fixing port, and the inner wall of the outer shell has a fixing rod that matches the fixing port.

[0014] Compared with the prior art, the present invention has the following advantages: 1. In this invention, a pull wire is connected to the fixation nail. One end of the pull wire passes around the first and second winding bodies and is placed in the suture storage compartment. The pull wire is stored in an orderly manner. When suturing, pressing the movable handle triggers the nail pressing mechanism, which presses out the fixation nail to suture the skin. The fixation nail changes from a U-shaped structure to a loop structure and is fixed to the patient's skin. Moving the entire device allows the remaining pull wire segment to be pulled out from the outer shell. Then, flexible materials such as cotton are placed on the skin graft. The tail end of the pull wire is knotted in opposite directions to fix the cotton and compress the skin graft. By pre-setting the pull wire on the fixation nail, the pull wire can be laid out simultaneously with the fixation nail attaching to the skin, significantly simplifying the operation steps, reducing the workload of medical staff, and effectively improving the overall efficiency of skin graft repair surgery.

[0015] 2. The fixing nail is set on the nail seat. To place the fixing nail, the pull wire needs to be arranged. The pull wire is passed around the first winding body and the second winding body in sequence. The end of the pull wire is set in the wire storage compartment. The pull wire has a certain length. The pull wire is placed in an orderly manner by winding to reduce tangling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the string; Figure 3 This is a schematic diagram of the first winding body; Figure 4 This is a schematic diagram of the nail holder; Figure 5 This is a schematic diagram of the second winding body; Figure 6 This is a schematic diagram of a unidirectional component; Figure 7 This is a schematic diagram of the limiting body; Figure 8 This is a schematic diagram of the cover plate; Figure 9 This is a schematic diagram of the positioning plate.

[0017] The markings in the attached diagram are as follows: 1-Outer shell, 2-Modible handle, 3-Pressing mechanism, 4-Pin seat, 5-Pull wire, 6-First winding body, 7-Second winding body, 8-Wire storage compartment, 9-Roller body, 10-Connecting plate, 11-Fixing rod, 12-Cylindrical shaft, 13-Wire inlet, 14-One-way assembly, 15-Shaft sleeve, 16-Rotating shaft, 17-One-way plate, 18-Fixing plate, 19-Limiting body, 20-Through groove, 21-Slot, 22-Clamping opening, 23-Cover plate, 24-Elastic support, 25-Bottom support, 26-Upright plate, 27-Positioning clamping plate, 28-Fixing opening, 29-Fixing rod, 30-Push pin component. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A firing retainer with a pull wire 5, comprising a housing 1, as shown in the attached diagram. Figure 1 As shown, a movable handle 2 is provided on one side of the outer casing 1, and the outer casing 1 contains a nail pressing mechanism 3 and a nail holder 4 for placing fixing nails, as shown in the attached diagram. Figure 4 As shown, the fixation pins are arranged on a pin holder. The pin holder has a resilient pin ejector at one end and a pin pusher assembly at the inner end. The pusher assembly is used to advance the fixation pins. Existing skin fixation devices trigger a pin-pressing mechanism by pressing a movable handle. The pin-pressing mechanism has a jaw at one end, facing the fixation pin. Pressing the movable handle causes the inner end of the handle to move the pusher assembly, squeezing the fixation pin. The squeezed fixation pin rests on the resilient pin ejector, and the fixation pin is compressed from a U-shaped structure into a U-shaped structure. When the fixation pin is sutured to the patient's skin, the resilient pin ejector retracts, completing the ejection of a single fixation pin. One end of the fixation pin is connected to a pull wire 5, as shown in the attached diagram. Figure 2As shown, one end of the pull cord has a loop, and the pull cord is set onto the fixing pin through the loop. The fixing pin is set onto the patient's skin, and the pull cord connected to the fixing pin is also set onto the patient's skin. The remaining part of the pull cord may remain inside the outer casing. By moving the outer casing, the remaining part of the pull cord can be pulled out. The side of the pin holder 4 has a first winding body 6, as shown in the attached diagram. Figure 3 As shown, the first winding body 6 includes a roller 9 disposed on the side of the nail seat 4, a pull wire 5 passing around the roller 9, and a connecting plate 10 installed at the end of the roller 9. The connecting plate 10 is connected to the side of the nail seat 4 by screws. After one end of the pull wire is connected to the fixing nail, the other end is led out and passes around the roller. The connecting plate is installed on the nail seat by screws to facilitate the disassembly and assembly of the roller. A second winding body 7 is installed on the inner wall of the outer casing 1. The second winding body 7 includes a pair of fixing rods 11 disposed on the inner wall of the outer casing 1. A pair of rotatable cylindrical shafts 12 are provided between the two fixing rods 11. The pull wire 5 passes through the gap between the two cylindrical shafts 12. As a transitional structure between the first winding body on the nail seat side and the bottom wire storage compartment, it provides secondary guidance for the pull wire, standardizing the path of the pull wire from the nail seat to the wire storage compartment, making the pull wire run straighter inside the fixture, avoiding bending and tangling. It adopts a rotatable cylindrical shaft structure; when the pull wire passes through the gap between the two cylindrical shafts, the shafts can rotate synchronously with the movement of the pull wire, converting sliding friction into rolling friction, significantly reducing the resistance when releasing the pull wire, ensuring that the pull wire can be smoothly pulled out when the fixing nail is engaged, without jamming or breakage. The fixing rod and the outer shell are an integral structure; when assembling the components, only the cylindrical shaft needs to be installed. The bottom of the outer shell 1 has a wire storage compartment 8. One end of the pull wire 5 passes sequentially around the first winding body 6 and the second winding body 7, and one end of the pull wire 5 is placed inside the wire storage compartment 8. The cable storage compartment serves as a dedicated storage space for the internal cable of the fixator. It allows for the orderly storage of excess cable length, preventing it from becoming tangled, knotted, or scattered within the instrument. This ensures the cable does not interfere with the normal operation of core components such as the pinning mechanism and pin holder. The cable storage compartment 8 is an integral structure with the outer shell 1, which improves the overall structural strength of the fixator, simplifies the assembly process, and guarantees precise relative positioning between the cable storage compartment, the winding body, and the needle outlet, thus enhancing the stability of the instrument. The side of the outer shell 1 has a through groove 20, as shown in the attached figure. Figure 8As shown, the outer casing features a large-area through-slot on the side, expanding the operator's field of vision and hand movement space. This allows operators to quickly observe the remaining cable and tangling status within the cable storage compartment, while also enabling two-handed cable replenishment. One side of the through-slot 20 has a pair of slots 21, and the other side has a locking opening 22. A cover plate 23 is installed inside the through-slot 20. One side of the cover plate 23 has an elastic support 24 that engages with the locking opening 22, and the other side has a bottom support 25 that engages with the slots 21. After the fixing pins on the pin holder are used up, the cover plate can be removed to expose the pin holder inside the casing. The fixing pins can then be inserted, and the cable can be laid out simultaneously. After replenishing the fixing pins, the cover plate is reinserted into the through-slot. During insertion, the bottom support of the cover plate first engages with the slot, and then the elastic support engages with the locking opening. The nail holder 4 has a vertical plate 26 on its pusher side. The continuous ejection of the fixing nail mainly relies on the pusher on the nail holder. One end of the pusher is connected to a spring, and the fixing nail is continuously pushed forward by the spring force. A rotatable positioning plate 27 is installed on the upper end of the vertical plate 26, as shown in the attached figure. Figure 9 As shown, the positioning plate 27 has a fixing opening 28, and the inner wall of the outer shell 1 has a fixing rod 29 that fits into the fixing opening 28. When a new fixing nail needs to be installed on the nail holder, the nail pusher needs to be moved to the inner end of the nail holder. If the positioning plate is not provided, one hand needs to hold the nail pusher and the other hand needs to insert the fixing nail, which is inconvenient. After the nail pusher is pushed to the inner end of the nail holder, the positioning plate is rotated, and the fixing rod is engaged in the fixing opening on the positioning plate, realizing the temporary positioning of the nail pusher, thereby facilitating the insertion of a new fixing nail into the nail holder.

[0020] The cable storage compartment 8 has a cable inlet 13 at the end facing the needle outlet of the outer casing 1. A one-way component 14 for easy cable release is provided at the cable inlet 13, as shown in the attached diagram. Figure 6 As shown, without an inlet, the corresponding pull wire needs to be inserted through the inner port of the cable storage compartment when placing the fixing nail, which is cumbersome. With the inlet, the pull wire can enter from the side of the cable storage compartment, improving the convenience of cable placement. The one-way component 14 includes a bushing 15 located on one side of the inlet 13. A rotating shaft 16 is connected to the bushing 15 via a torsion spring. A one-way plate 17 is installed at the end of the rotating shaft 16. A fixing piece 18 is installed on the other side of the inlet 13, abutting against the one-way plate 17. The one-way plate is limited by the fixing piece, and can only rotate inwards. The pull wire pushes the one-way plate open and enters the cable storage compartment. The one-way component prevents the pull wire from moving out of the cable storage compartment. The inner wall of the cable storage compartment 8 has symmetrically arranged limiting bodies 19, as shown in the attached figure. Figure 7As shown, the pull thread 5 is positioned between the two limiting bodies 19. The gap between the two limiting bodies is just the right size to allow the pull thread to pass through. Symmetrically arranged on the inner wall of the thread storage compartment, the pull thread is confined to the preset central area, preventing it from swaying or shifting to the sides during storage and release, thus preventing it from deviating from the normal thread path and achieving orderly wiring. This invention is applicable to skin grafting. After the skin graft is sutured, a flexible material such as cotton is placed on the skin graft. The ends of the pull thread are then knotted in opposite directions to fix the cotton and compress it, so that the cotton exerts pressure on the skin graft, which helps the skin graft to adhere tightly to the wound, eliminates dead space, and creates blood supply conditions for the skin graft.

[0021] The working principle of this invention: Before the fixing nails are fastened, the fixing nails and pull wires 5 need to be pre-assembled. Open the cover plate 23 to reveal the components inside the outer casing 1. Move the pusher 30 on the nail holder 4 to the inner end of the nail holder 4, leaving space for the fixing nails. Fix one end of the pull wire 5 with the loop to the preset connection position of the fixing nail. Then, arrange the fixing nails according to specifications on the nail holder 4, and simultaneously route the pull wires 5 in an orderly manner. First, pass the free end of the pull wire 5 around the first... The winding body 6 uses the guiding action of the roller body 9 to straighten the initial direction of the pull wire 5, and then passes through the gap between the two cylindrical shafts 12 of the second winding body 7 on the inner wall of the outer shell 1. The rotational characteristics of the cylindrical shafts 12 reduce the resistance to the movement of the pull wire 5. Finally, it pushes the free end of the pull wire 5 to move towards the wire storage compartment 8. The pull wire 5 pushes open the one-way plate 17 of the wire inlet 13 of the wire storage compartment 8, enters the wire storage compartment 8 from the wire inlet 13, and is restricted by the limiting bodies 19 on both sides to be within the preset channel, thus completing the orderly storage of the pull wire 5.

[0022] The above embodiments merely illustrate implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A skin graft fixation device with wire anchoring, comprising a housing (1), one side of the housing (1) is provided with a movable handle (2), the housing (1) has a pressing nail mechanism (3) and a nail seat (4) for placing a fixation nail, characterized in that: One end of the fixing nail is connected to a pull wire (5), the nail seat (4) has a first winding body (6) on its side, and a second winding body (7) is provided on the inner wall of the outer shell (1); the bottom of the outer shell (1) has a wire storage compartment (8), one end of the pull wire (5) passes around the first winding body (6) and the second winding body (7) in sequence, and one end of the pull wire (5) is placed in the wire storage compartment (8).

2. The suture anchor skin graft fixation device of claim 1, wherein: The first winding body (6) includes a roller (9) disposed on the side of the nail seat (4), the pull wire (5) is disposed around the roller (9), and the end of the roller (9) is provided with a connecting plate (10), which is connected to the side of the nail seat (4) by screws.

3. The suture anchor skin graft fixation device of claim 1, wherein: The second winding body (7) includes a pair of fixed rods (11) disposed on the inner wall of the outer shell (1), and a pair of rotatable cylindrical shafts (12) are provided between the fixed rods (11) on both sides. The pull wire (5) passes through the gap between the two cylindrical shafts (12).

4. The suture anchoring skin graft fixation device according to claim 1, characterized in that: The cable storage compartment (8) and the outer shell (1) are an integral structure.

5. The suture anchoring skin graft fixation device according to claim 1, characterized in that: The wire storage compartment (8) has a wire inlet (13) at the end facing the needle outlet of the outer shell (1), and a one-way component (14) is provided at the wire inlet (13) to facilitate wire release.

6. The suture anchoring skin graft fixation device according to claim 5, characterized in that: The one-way component (14) includes a bushing (15) disposed on one side of the inlet (13), a rotating shaft (16) connected to the bushing (15) via a torsion spring, a one-way plate (17) at the end of the rotating shaft (16), and a fixing piece (18) abutting against the one-way plate (17) on the other side of the inlet (13).

7. The suture anchoring skin graft fixation device according to claim 5, characterized in that: The inner wall of the cable storage compartment (8) has symmetrically arranged limiting bodies (19), and the pull line (5) is arranged between the two limiting bodies (19).

8. The suture anchoring skin graft fixation device according to claim 1, characterized in that: The outer casing (1) has a through groove (20) on its side, one side of the through groove (20) has a pair of slots (21), and the other side of the through groove (20) has a snap (22); a cover plate (23) is provided inside the through groove (20), one side of the cover plate (23) has an elastic support (24) that fits into the snap (22), and the other side of the cover plate (23) has a bottom support (25) that fits into the slot (21).

9. The suture anchoring skin graft fixator according to claim 5, characterized in that: The nail holder (4) has a vertical plate (26) on the side of the pusher, and a rotatable positioning plate (27) is provided on the upper end of the vertical plate (26). The positioning plate (27) has a fixing port (28), and the inner wall of the outer shell (1) has a fixing rod (29) that matches the fixing port (28).

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