Miniature support with adjustable loop

Abstract

The utility model relates to a miniature support of an adjustable loop, which solves the problem that a newly-built ligament graft is easy to break or loosen due to an existing button steel plate. Comprising a supporting and fixing piece which is a strip-shaped elastic plate, and the miniature support further comprises a ligament hanging ring which is installed at the bottom of the strip-shaped elastic plate. During use, the newly-built ligament graft penetrates through the ligament hanging ring to be supported and positioned, when a person moves, the newly-built ligament graft stretches out and draws back in the pulling process, and due to the fact that the supporting and fixing piece is the strip-shaped elastic plate, certain elasticity is provided for the newly-built ligament graft, and when the newly-built ligament graft pulls the ligament hanging ring, the newly-built ligament graft does not stretch out. The hanging ring can be adjusted along with stretching and retracting of the newly-built ligament graft under the elastic effect of the strip-shaped elastic plate, and the defect that the newly-built ligament graft is broken or loosened is overcome.

Description

Technical Field

[0001] The utility model relates to medical supplies, in particular to a micro-bracket with adjustable loops. Background Art

[0002] Currently, grafts used for ACL reconstruction include artificial ligaments and autologous tendon sutures. Neither possesses the same stretchability as the ACL (approximately 10%). This poses a risk of rupture or loosening after graft reconstruction due to the inability to maintain the stretchability required during knee motion.

[0003] For ligament reconstruction, especially anterior cruciate ligament reconstruction, fixation of the graft (neoligament) can be performed using either an interference screw fixation or a suspension fixation method. The latter utilizes a button plate, such as a stainless steel plate, as a slender button. Its width is smaller than the diameter of the bone tunnel, but its length is greater. The button plate can be pulled vertically into the bone tunnel, then rotated 90° after exiting, snapping onto the outside of the tunnel like a button. This secures the graft, such as an artificial ligament or tendon, within the tunnel, forming a new ligament.

[0004] However, button plates are rigid and lack elasticity. They cannot provide a tensile stress buffer. Natural knee ligaments, on the other hand, have a certain elasticity and ductility under physiological conditions. New ligament grafts lack the ductility of natural ligaments, and button plates can easily cause them to break or become loose. Utility Model Content

[0005] The utility model aims to solve the problem that the existing button steel plate easily causes the newly constructed ligament graft to break or become loose.

[0006] The technical solution adopted to solve the technical problem raised by the utility model is as follows: the micro-bracket with an adjustable loop of the utility model includes a supporting fixing member, the supporting fixing member is a strip elastic plate, and the micro-bracket also includes a ligament ring, which is installed at the bottom of the strip elastic plate.

[0007] The technical solutions that further define the utility model include:

[0008] The strip elastic plate is provided with a first mounting hole and a second mounting hole for mounting and positioning the ligament hanging ring.

[0009] The ligament hanging ring is U-shaped.

[0010] A through hole communicating with the first mounting hole and the second mounting hole is provided in the middle of the strip elastic plate. The first mounting hole and the second mounting hole are symmetrically arranged with the center of the through hole as the center. Concave slots are provided at both ends of the opening of the ligament hanging ring. The slots at both ends of the ligament hanging ring are respectively engaged with the first mounting hole and the second mounting hole.

[0011] The two top ends of the U-shaped opening of the ligament hanging ring are respectively provided with a first anti-slip block and a second anti-slip block.

[0012] The two top ends of the U-shaped opening of the ligament suspension ring are respectively provided with a first riveted portion and a second riveted portion. The first riveted portion passes through the first mounting hole and is riveted to the strip elastic plate, and the second riveted portion passes through the second mounting hole and is riveted to the strip elastic plate.

[0013] The ligament hanging ring is an annular structure.

[0014] The ligament hanging ring is a movable ring formed by welding a strip of steel wire through the first mounting hole and the second mounting hole respectively.

[0015] The cross section of the strip elastic plate is arched, wavy or V-shaped.

[0016] Both sides of the strip-shaped elastic plate are provided with mounting positioning holes.

[0017] Through the above technical solution, the present invention has the following beneficial effects: the micro-stent with an adjustable loop includes a support fixture, which is a strip elastic plate, and a ligament ring, which is mounted at the bottom of the strip elastic plate. During use, the newly constructed ligament graft is passed through the ligament ring for support and positioning. When a person moves, the newly constructed ligament graft expands and contracts during the pulling process. Since the support fixture is a strip elastic plate, it provides a certain degree of elasticity to the newly constructed ligament graft. When the newly constructed ligament graft pulls the ligament ring, the ring expands and contracts with the newly constructed ligament graft under the elastic action of the strip elastic plate, thereby becoming adjustable, thereby preventing the newly constructed ligament graft from breaking or loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a first embodiment of a micro-stent with an adjustable loop according to the present invention.

[0019] Figure 2 This is a schematic diagram of the exploded structure of Example 1 of a micro-stent with an adjustable loop according to the present invention.

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of a second embodiment of a micro-stent with an adjustable loop according to the present invention.

[0021] Figure 4 This is a schematic diagram of the exploded structure of a second embodiment of a micro-stent with an adjustable loop according to the present invention.

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of a micro-stent with an adjustable loop according to a third embodiment of the present invention. DETAILED DESCRIPTION

[0023] The structure of the present invention is further described below with reference to the accompanying drawings.

[0024] Reference Figures 1 to 5 A micro-stent with an adjustable loop includes a support fixture 1, which is a strip elastic plate. The micro-stent also includes a ligament ring 2, which is installed at the bottom of the strip elastic plate. During use, the newly constructed ligament graft is passed through the ligament ring for support and positioning. When a person moves, the newly constructed ligament graft expands and contracts during the pulling process. Since the support fixture is a strip elastic plate, it provides a certain degree of elasticity for the newly constructed ligament graft. When the newly constructed ligament graft pulls the ligament ring, the ring expands and contracts with the newly constructed ligament graft under the elastic action of the strip elastic plate, thereby becoming adjustable, thereby preventing the newly constructed ligament graft from breaking or loosening. In this embodiment, the strip elastic plate and the ligament ring are both made of steel. Other materials can also be used as needed during specific implementation.

[0025] In this embodiment, a first mounting hole 11 and a second mounting hole 12 for mounting and positioning the ligament suspension ring are provided on the strip elastic plate.

[0026] In the first embodiment, the ligament ring is U-shaped, and the ligament ring is formed by bending a round steel bar into a U-shape. A through hole 13 is provided in the middle of the strip elastic plate 1, which is connected to the first mounting hole and the second mounting hole. The first mounting hole and the second mounting hole are symmetrically arranged with the center of the through hole as the center. The through hole forms a first notch 111 and a second notch 121 at the connection points with the first mounting hole 11 and the second mounting hole 12 respectively. The opening ends of the ligament ring 2 are provided with concave slots 21, and the slots at both ends of the ligament ring are respectively engaged with the first mounting hole and the second mounting hole. Since the ligament ring is U-shaped, it has a certain elasticity at the open end. When installing, the bottom end of the U-shaped ligament ring is passed through the through hole 13, and the ligament ring undergoes elastic deformation. When the concave slots at both ends of the ligament ring pass through the first notch and the second notch and enter the first mounting hole 11 and the second mounting hole 12 respectively, the ligament ring returns to its original state and is fixed. The U-shaped opening two top ends of the ligament hanging ring 2 are respectively provided with the first anti-falling block 22 and the second anti-falling block 23. The first anti-falling block 22 and the second anti-falling block 23 make the ligament hanging ring installed with firmness, prevent the ligament hanging ring from coming out.

[0027] In the second embodiment, a first riveted portion 24 and a second riveted portion 25 are respectively provided at the two top ends of the U-shaped opening of the ligament suspension ring. The first riveted portion passes through the first mounting hole and is riveted to the strip elastic plate, and the second riveted portion passes through the second mounting hole and is riveted to the strip elastic plate.

[0028] In the third embodiment, the ligament ring can also be an annular structure. The ligament ring is a movable ring formed by welding the ends of a strip of steel wire through the first mounting hole and the second mounting hole. The movable ring can increase the service life of the ligament ring.

[0029] In this embodiment, the cross-section of the strip elastic plate 1 is wavy. In specific implementations, the cross-section of the strip elastic plate 1 can also be an arched or V-shaped cross-section or other elastic cross-section. In this embodiment, mounting holes 16 are provided on both sides of the strip elastic plate 1. The mounting holes are used to position the strip elastic plate during installation, facilitating its installation and positioning.

[0030] Although the specific embodiments of the present invention are described in detail in conjunction with the accompanying drawings, this should not be construed as limiting the scope of protection of the present invention. Within the scope described by the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of the present invention.

Claims

1. A micro-stent with an adjustable loop, including a supporting fixture, characterized in that: The supporting fixing member is a strip elastic plate, and the micro-bracket further includes a ligament ring, which is installed at the bottom of the strip elastic plate.

2. The micro-stent with an adjustable loop according to claim 1, characterized in that: The strip elastic plate is provided with a first mounting hole and a second mounting hole for mounting and positioning the ligament hanging ring.

3. The micro-stent with an adjustable loop according to claim 2, characterized in that: The ligament hanging ring is U-shaped.

4. The micro-stent with an adjustable loop according to claim 3, characterized in that: A through hole communicating with the first mounting hole and the second mounting hole is provided in the middle of the strip elastic plate. The first mounting hole and the second mounting hole are symmetrically arranged with the center of the through hole as the center. Concave slots are provided at both ends of the opening of the ligament hanging ring. The slots at both ends of the ligament hanging ring are respectively engaged with the first mounting hole and the second mounting hole.

5. The micro-stent with an adjustable loop according to claim 4, characterized in that: The two top ends of the U-shaped opening of the ligament hanging ring are respectively provided with a first anti-slip block and a second anti-slip block.

6. The micro-stent with an adjustable loop according to claim 3, characterized in that: The two top ends of the U-shaped opening of the ligament suspension ring are respectively provided with a first riveted portion and a second riveted portion. The first riveted portion passes through the first mounting hole and is riveted to the strip elastic plate, and the second riveted portion passes through the second mounting hole and is riveted to the strip elastic plate.

7. The micro-stent with an adjustable loop according to claim 2, characterized in that: The ligament hanging ring is an annular structure.

8. The micro-stent with adjustable loop according to claim 7, characterized in that: The ligament hanging ring is a movable ring formed by welding a strip of steel wire through the first mounting hole and the second mounting hole respectively.

9. The micro-stent with adjustable loop according to claim 1, characterized in that: The cross section of the strip elastic plate is arched, wavy or V-shaped.

10. The micro-stent with adjustable loop according to claim 1, characterized in that: Both sides of the strip-shaped elastic plate are provided with mounting positioning holes.

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