A fixing structure for MEEK skin grafting

Abstract

The present application belongs to the technical field of medical devices, and particularly relates to a fixing structure for MEEK skin grafting. The fixing structure comprises a rigid support frame, the rigid support frame comprises a first support frame and a second support frame, the first support frame is provided with a first adjustable rod, the second support frame is provided with a second adjustable rod, an angle adjusting mechanism is connected between the extending end of the first adjustable rod and the extending end of the second adjustable rod, and a detachable elastic fixing piece is connected between the end faces of the first support frame and the second support frame which are close to each other, so as to fix the skin grafting part. The present application comprises a rigid support frame, the rigid support frame comprises a first support frame and a second support frame, the joint part can be fixed, the rotation of the joint part is prevented, and the rehabilitation effect is not affected, a detachable elastic fixing piece is connected between the end faces of the first support frame and the second support frame which are close to each other, the skin grafting part can be fixed flexibly, and the skin graft and the skin grafting part can be closely attached.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a fixation structure for MEEK skin grafting. Background Technology

[0002] Skin grafting is a surgical procedure to repair skin problems. It typically involves taking a piece of healthy skin from the patient's own body to cover the area where the scar was removed. It is particularly effective for large areas of scar tissue or for tattoos that are difficult to remove.

[0003] In existing technologies, bandages are generally used to fix the skin graft site in order to facilitate rapid postoperative recovery. However, this fixation method can generally only be used in non-joint areas. If only bandages are used to fix the skin graft site in areas such as the knee or elbow, the movement of the joint cannot be effectively restricted, which makes the skin graft site prone to breakage and is not conducive to postoperative recovery.

[0004] Therefore, there is an urgent need to design a fixation structure for MEEK skin graft transplantation that can both restrict joint movement and fix the skin graft site. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention discloses a fixation structure for MEEK skin grafting, and specifically discloses the following technical solutions: A fixation structure for MEEK skin grafting includes a rigid support frame, which comprises a first support frame and a second support frame. A first adjustable rod is mounted on the first support frame, and a second adjustable rod is mounted on the second support frame. An angle adjustment mechanism is connected between the extended ends of the first and second adjustable rods, which can adjust the angle between the first and second support frames. An elastic fixing piece is detachably connected between the proximal end faces of the first and second support frames for fixing the skin graft site.

[0006] Furthermore, both the first support frame and the second support frame are cylindrical structures with openings on the sides. The two ends of the first support frame and the second support frame at the openings are respectively fixedly connected with fixing straps, and the fixing straps at the two ends of the openings are connected by a Velcro structure.

[0007] Furthermore, air cushions are fixedly installed on the inner sides of both the first support frame and the second support frame, and air inlet valves and air outlet valves are provided on the sides of the air cushions.

[0008] Furthermore, the first adjustable rod includes an outer sleeve rod and a telescopic rod. The outer sleeve rod is fixedly connected to the outer side of the first support frame. A sliding hole is provided inside the outer sleeve rod. One end of the telescopic rod is slidably installed in the sliding hole. A plurality of limiting holes are provided on the outer side of the outer sleeve rod along its length direction. A plurality of threaded holes are provided on the telescopic rod along its length direction. The threaded holes are aligned with the corresponding limiting holes and then fixed by bolts. The structure of the second adjustable rod is the same as that of the first adjustable rod.

[0009] Furthermore, the angle adjustment mechanism includes a first fixed plate and a second fixed plate. The first fixed plate is fixedly connected to the extended end of the first adjustable rod, and the second fixed plate is fixedly connected to the extended end of the second adjustable rod. A threaded rod is fixedly connected to the center of the side of the first fixed plate near the center of the second fixed plate. Several limiting protrusions are evenly arranged circumferentially on the outer periphery of the side of the first fixed plate near the center of the side of the second fixed plate near the center of the side of the first fixed plate. A through hole for the threaded rod to pass through is opened on the side of the second fixed plate near the center of the side of the first fixed plate. The second fixed plate is sleeved on the threaded rod through the through hole. A matching limiting groove is provided on the side of the second fixed plate near the center of the first fixed plate for each limiting protrusion. After the limiting protrusion is inserted into the corresponding limiting groove, a fastening nut is installed on the threaded rod to fix the first fixed plate and the second fixed plate relative to each other.

[0010] Furthermore, a spring is fitted onto the threaded rod, the spring being located between the first fixed plate and the second fixed plate, and a storage groove for receiving the spring is formed on the side of the first fixed plate around the threaded rod.

[0011] Furthermore, several elastic limiting bands are respectively attached to the two sides of the elastic fixing piece by a Velcro structure, and the other end of the elastic limiting bands is detachably connected to the end face of the corresponding support frame.

[0012] Furthermore, several circumferentially distributed fixing rings are fixedly provided on the end faces of the first support frame and the second support frame that are close to each other, and the end of the elastic limiting band away from the elastic fixing piece is respectively bound to the corresponding fixing ring.

[0013] Furthermore, the elastic fixing piece includes a mesh elastic band, one end of the elastic limiting band is attached to the outer edge of the elastic band via a Velcro structure, a silicone pressure pad is fixedly connected to the inner side of the elastic band, and the two ends of the elastic band are detachably connected via a Velcro structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention includes a rigid support frame, which includes a first support frame and a second support frame. The rigid support frame can fix the joint and prevent the joint from rotating, thus affecting the rehabilitation effect. An elastic fixing piece is detachably connected between the end faces of the first support frame and the second support frame that are close to each other, which can flexibly fix the skin graft site, so that the skin graft and the skin graft site can fit tightly together.

[0015] A first adjustable rod is installed on the first support frame, and a second adjustable rod is installed on the second support frame. An angle adjustment mechanism is connected between the extended ends of the first and second adjustable rods. By adjusting the corresponding adjustable rods and the angle adjustment mechanism, the distance and angle between the first and second support frames can be adjusted respectively to adapt to different usage needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0018] Figure 3 This is an exploded view of the telescopic rod and angle adjustment mechanism in this invention.

[0019] Figure 4 This is an exploded view of the telescopic rod and angle adjustment mechanism in this invention from another perspective.

[0020] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0021] Figure 6 This is a schematic diagram showing the first support frame and the second support frame in this invention at an angle.

[0022] 1-First support frame, 2-Second support frame, 3-Fixing strap, 4-Air cushion, 5-Outer sleeve rod, 6-Telescopic rod, 7-Limiting hole, 8-Threaded hole, 9-Bolt, 10-First fixing plate, 11-Second fixing plate, 12-Threaded rod, 13-Limiting protrusion, 14-Limiting groove, 15-Fastening nut, 16-Spring, 17-Storage slot, 18-Elastic limiting strap, 19-Elastic fixing piece, 20-Fixing ring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figure 1-6 A fixation structure for MEEK skin grafting includes a rigid support frame, comprising a first support frame 1 and a second support frame 2. The first support frame 1 and the second support frame 2 are respectively installed at both ends of a joint. For example, if the skin graft site is at the elbow, then the first support frame 1 and the second support frame 2 are respectively installed on the upper arm and the forearm. A first adjustable rod is installed on the first support frame 1, and a second adjustable rod is installed on the second support frame 2. An angle adjustment mechanism is connected between the extended ends of the first adjustable rod and the extended ends of the second adjustable rod. The angle adjustment mechanism can adjust the angle between the first support frame 1 and the second support frame 2, thereby fixing the included angle between the upper arm and the forearm at a certain appropriate angle. An elastic fixing piece 19 is detachably connected between the close end faces of the first support frame 1 and the second support frame 2 for binding and fixing the skin graft site.

[0025] In this embodiment, both the first support frame 1 and the second support frame 2 are cylindrical structures with openings on their sides. Fixing straps 3 are fixedly connected to both ends of the first support frame 1 and the second support frame 2 at the openings, and the fixing straps 3 at the two ends of the openings are connected by Velcro. In actual wear, the first support frame 1 and the second support frame 2 can be slipped onto the upper arm and forearm respectively through the openings, and then secured with the fixing straps 3.

[0026] In this embodiment, air cushions 4 are fixedly installed on the inner sides of both the first support frame 1 and the second support frame 2. An air inlet valve and an air outlet valve are provided on the side of the air cushion 4. The air inlet valve allows air to be inflated into the air cushion 4. The through-hole controls the amount of air in the air cushion 4, which not only adjusts the tightness of the fit but also the size of the inner space of the air cushion 4, thus adapting to different arm circumferences. The air outlet valve allows the air in the air cushion 4 to be expelled, facilitating the removal of the support frame from the arm.

[0027] In this embodiment, the first adjustable rod includes an outer sleeve rod 5 and a telescopic rod 6. The outer sleeve rod 5 is fixedly connected to the outer side of the first support frame 1. A sliding hole is provided inside the outer sleeve rod 5, and one end of the telescopic rod 6 is slidably installed in the sliding hole. Several limiting holes 7 are provided on the outer side of the outer sleeve rod 5 along its length direction. Several threaded holes 8 are provided on the telescopic rod 6 along its length direction. After the threaded holes 8 are aligned with the corresponding limiting holes 7, they are fixed by bolts 9. The structure of the second adjustable rod is the same as that of the first adjustable rod. By sliding the telescopic rod 6, the length of the telescopic rod 6 can be adjusted, thereby adjusting the distance between the two support frames to adapt to different usage requirements. After adjustment, the bolts 9 are installed into the aligned threaded holes 8 and limiting holes 7 to fix its length.

[0028] In this embodiment, the angle adjustment mechanism includes a first fixed plate 10 and a second fixed plate 11. The first fixed plate 10 is fixedly connected to the extended end of the first adjustable rod, and the second fixed plate 11 is fixedly connected to the extended end of the second adjustable rod. A threaded rod 12 is fixedly connected to the center of the side of the first fixed plate 10 near the center of the second fixed plate 11. Several limiting protrusions 13 are evenly arranged circumferentially on the outer periphery of the side of the first fixed plate 10 near the center of the side of the second fixed plate 11 near the center of the side of the first fixed plate 10 for the threaded rod 12 to pass through. The second fixed plate 11 is sleeved on the threaded rod 12 through the through hole. A corresponding limiting groove 14 is provided on the side of the second fixed plate 11 near the center of the first fixed plate 10 for each limiting protrusion 13. After the limiting protrusion 13 is inserted into the corresponding limiting groove 14, a fastening nut 15 is installed on the threaded rod 12 to fix the first fixed plate 10 and the second fixed plate 11 relative to each other. When it is necessary to adjust the included angle between the two support frames, the fastening nut 15 can be loosened, and then the second fixed plate 11 can be slid to disengage the limiting protrusion 13 from the limiting groove 14. At this time, the first fixed plate 10 and the second fixed plate 11 can rotate relative to each other, thereby adjusting the angle between the first adjustable rod and the second adjustable rod. After the adjustment is completed, the limiting protrusion 13 is repositioned into the corresponding limiting groove 14, and then the fastening nut 15 is tightened to make the first fixed plate 10 and the second fixed plate 11 fit tightly together.

[0029] In this embodiment, a spring 16 is sleeved on the threaded rod 12. The spring 16 is located between the first fixed plate 10 and the second fixed plate 11. A storage groove 17 for storing the spring 16 is formed on the side of the first fixed plate 10 around the threaded rod 12. The spring 16 ensures that the first fixed plate 10 and the second fixed plate 11 can automatically disengage under the elastic force of the spring 16 after the fastening nut 15 is loosened, thus facilitating relative rotation. The storage groove 17 ensures that the spring 16 can fully retract into the storage groove 17 after the fastening nut 15 is tightened, thus ensuring that the first fixed plate 10 and the second fixed plate 11 can fit tightly against each other, and the limiting protrusion 13 can be engaged in the limiting groove 14.

[0030] In this embodiment, several elastic limiting bands 18 are respectively attached to both sides of the elastic fixing piece 19 via a Velcro structure. The other end of each elastic limiting band 18 is detachably connected to the end face of the corresponding support frame. The elastic limiting bands 18 can axially limit the elastic fixing piece 19, thereby preventing the elastic fixing piece 19 from accidentally sliding along the axial direction and affecting the fixing effect. Furthermore, since one end of the elastic limiting band 18 is attached to the elastic fixing piece 19 via a Velcro structure, it is convenient to disassemble and replace the elastic fixing piece 19.

[0031] In this embodiment, a plurality of circumferentially distributed fixing rings 20 are fixedly provided on the end faces of the first support frame 1 and the second support frame 2 that are close to each other. The end of the elastic limiting band 18 away from the elastic fixing piece 19 is respectively bound to the corresponding fixing ring 20. That is, the elastic limiting band 18 can also be removed from the fixing ring 20, so that different lengths of elastic limiting band 18 can be replaced according to the specific situation. When actually installing the elastic limiting band 18, the fixing ring 20 at the appropriate position can be selected for binding according to the actual situation.

[0032] In this embodiment, the elastic fixing piece 19 includes a mesh elastic band, one end of the elastic limiting band 18 is attached to the outer edge of the elastic band by a Velcro structure, a silicone pressure pad is fixedly connected to the inner side of the elastic band, and the two ends of the elastic band are detachably connected by a Velcro structure, thereby forming a cylindrical structure that is fitted onto the joint.

[0033] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A fixation structure for MEEK skin grafting, characterized in that, The device includes a rigid support frame, comprising a first support frame and a second support frame. A first adjustable rod is mounted on the first support frame, and a second adjustable rod is mounted on the second support frame. An angle adjustment mechanism is connected between the extended ends of the first and second adjustable rods, allowing adjustment of the angle between the first and second support frames. An elastic fixing plate is detachably connected between the close-proximity end faces of the first and second support frames for fixing the skin graft site.

2. The fixation structure for MEEK skin grafting according to claim 1, characterized in that, Both the first support frame and the second support frame are cylindrical structures with openings on the sides. The two ends of the first support frame and the second support frame at the openings are respectively fixedly connected with fixing straps, and the fixing straps at the two ends of the openings are connected by a Velcro structure.

3. The fixation structure for MEEK skin grafting according to claim 1, characterized in that, Air cushions are fixedly installed on the inner sides of both the first support frame and the second support frame, and air inlet valves and air outlet valves are provided on the sides of the air cushions.

4. The fixation structure for MEEK skin grafting according to claim 1, characterized in that, The first adjustable rod includes an outer sleeve rod and a telescopic rod. The outer sleeve rod is fixedly connected to the outer side of the first support frame. A sliding hole is provided inside the outer sleeve rod. One end of the telescopic rod is slidably installed in the sliding hole. A plurality of limiting holes are provided on the outer side of the outer sleeve rod along its length direction. A plurality of threaded holes are provided on the telescopic rod along its length direction. The threaded holes are aligned with the corresponding limiting holes and then fixed by bolts. The structure of the second adjustable rod is the same as that of the first adjustable rod.

5. The fixation structure for MEEK skin grafting according to claim 1, characterized in that, The angle adjustment mechanism includes a first fixed plate and a second fixed plate. The first fixed plate is fixedly connected to the extended end of the first adjustable rod, and the second fixed plate is fixedly connected to the extended end of the second adjustable rod. A threaded rod is fixedly connected to the center of the side of the first fixed plate near the center of the second fixed plate. Several limiting protrusions are evenly arranged circumferentially on the outer periphery of the side of the first fixed plate near the center of the side of the second fixed plate near the center of the side of the first fixed plate. A through hole for the threaded rod to pass through is opened on the side of the second fixed plate near the center of the side of the first fixed plate. The second fixed plate is sleeved on the threaded rod through the through hole. A corresponding limiting groove is provided on the side of the second fixed plate near the center of the first fixed plate for each limiting protrusion. After the limiting protrusion is inserted into the corresponding limiting groove, a fastening nut is installed on the threaded rod to fix the first fixed plate and the second fixed plate relative to each other.

6. The fixation structure for MEEK skin grafting according to claim 5, characterized in that, A spring is fitted onto the threaded rod, and the spring is located between the first fixed plate and the second fixed plate. A storage groove for storing the spring is formed on the side of the first fixed plate around the threaded rod.

7. The fixation structure for MEEK skin grafting according to claim 1, characterized in that, The two sides of the elastic fixing piece are respectively glued with several elastic limiting strips by a Velcro structure, and the other end of the elastic limiting strips is detachably connected to the end face of the corresponding support frame.

8. The fixation structure for MEEK skin grafting according to claim 7, characterized in that, Several circumferentially distributed fixing rings are fixedly provided on the end faces of the first support frame and the second support frame that are close to each other, and the end of the elastic limiting band away from the elastic fixing piece is respectively bound to the corresponding fixing ring.

9. The fixation structure for MEEK skin grafting according to claim 7, characterized in that, The elastic fixing piece includes a mesh elastic band, one end of which is attached to the outer edge of the elastic band via a Velcro structure, and a silicone pressure pad is fixedly connected to the inner side of the elastic band. The two ends of the elastic band are detachably connected via a Velcro structure.

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