A spinal repair and reconstruction patch based on human body absorbable material

Abstract

The present invention discloses a spinal repair and reconstruction patch based on human body absorbable material, the reconstruction patch includes a rectangular strip-shaped support sheet, at least three pairs of fixed wings are arranged at intervals on the left and right sides of the support sheet, the fixed wings extend outward, and the fixed wings and the support sheet are integrally formed; the spacing between adjacent fixed wings on the same side of the support sheet is equal to the spacing between the spinous processes of the spine; a plurality of tensioning fixed sheets are fixed at intervals on the center of the upper surface of the support sheet, the lower end of the tensioning fixed sheet is fixed on the support sheet, and the upper end is tilted, and the reconstruction patch is made of flexible human body absorbable material. The closer the spinous process is to the tip, the more cortical bone there is, and it is easy to fix. The upper and lower ends of the reconstruction patch are fixed to the normal spinous process, and the spine in the lesion area is wrapped therein, which can effectively reduce the risk of local collapse of the spine in the lesion area and improve the surgical effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and specifically relates to a consumable material for spinal repair surgery, and more specifically to an interspinal repair and reconstruction patch based on human body absorbable material. Background Art

[0002] Spinal vertebral lesions are common and frequently occurring diseases that trouble people. The main method of treating this disease is to surgically remove the spinal lesions and then perform spinal reconstruction. This surgery usually requires the use of a spinal stabilization system on the spine for vertebral fixation. Spinal stabilization systems mostly use screw-rod systems and lamina fixation systems.

[0003] In the screw-rod system, the spinal rod is a straight rod. After the surgical fixation, it cannot bend dynamically with the change of the physiological curvature of the vertebral body. Therefore, the patient's lumbar spine is stiff and limited in movement after the operation, and it is even easy to cause lesions in the adjacent spinal segments. The screw-rod system is reliable, stable, has poor mobility, high technical requirements, early movement, and high cost.

[0004] The lamina fixation system is commonly used in neurosurgery for spinal cord lesions. There are the following problems when fixing the spinous process and lamina after spinal surgery: when the lamina is fixed with titanium screws, the local bone is soft, the area of ​​bone that can be fixed is small, and there is a risk of titanium screws falling off, causing vertebral collapse. The supraspinal ligaments and interspinal ligaments play an important role in spinal stability. However, after being destroyed during surgery, only the muscles are sutured without ligament reconstruction; or the effect of reconstruction with nylon thread is limited. Dead space is prone to occur when the muscles on both sides of the spinous process are sutured. The lamina fixation system has the characteristics of simplicity, poor stability, early braking, high risk of nail dislocation and spinal cord compression, and low cost. Summary of the invention

[0005] The present invention provides an intervertebral repair and reconstruction patch based on human body absorbable material, aiming to solve the problem that titanium nails in the existing vertebral plate fixation system have the risk of falling off, resulting in vertebral collapse.

[0006] To this end, the present invention adopts the following technical solutions:

[0007] A spinal repair and reconstruction patch based on human-absorbable material, the reconstruction patch comprising a rectangular strip-shaped support plate, at least three pairs of fixing wings are arranged at intervals on the left and right sides of the support plate, the fixing wings extend outward, and the fixing wings and the support plate are integrally formed; the spacing between adjacent fixing wings on the same side of the support plate is equal to the spacing between the spinous processes of the spine; a plurality of tension fixing plates are fixed at intervals on the center of the upper surface of the support plate, the lower ends of the tension fixing plates are fixed on the support plate, and the upper ends are tilted, and the reconstruction patch is made of a flexible human-absorbable material.

[0008] Furthermore, the fixed fin is in the shape of a rectangular sheet, and the fixed fin and the supporting sheet are arranged in a herringbone shape.

[0009] Furthermore, the support sheet has a length of 5 to 6 cm, a width of 1.5 to 2.5 cm, and a thickness of 2 to 3 mm.

[0010] Furthermore, the tensioning and fixing sheet is fixed to the supporting sheet by suturing with absorbable sutures.

[0011] Furthermore, the tensioning fixing sheet is a rectangular sheet structure.

[0012] The beneficial effects of the present invention are:

[0013] 1. The closer the spinous process is to the tip, the more cortical bone there is, which makes it easier to fix. The upper and lower ends of the reconstruction patch are fixed to the normal spinous process, wrapping the spine in the lesion area, which can effectively reduce the risk of local collapse of the spine in the lesion area and improve the surgical effect;

[0014] 2. After the patch is fixed and reconstructed on both sides of the spinous process and vertebral lamina, the muscles are tightly sutured to eliminate dead space, avoid adverse postoperative phenomena such as effusion and even nerve compression, reduce the rate of postoperative adverse reactions, and improve the success rate of the operation;

[0015] 3. The tensioning fixation plate is used for muscle suture fixation. When the muscles above the spinous process are sutured, it plays an upward pulling role, further improving the fixation effect and preventing local bone collapse. The tensioning fixation plate can also be used as an attachment point for muscle and bone reconstruction, which is conducive to muscle healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a reconstruction patch of the present invention;

[0017] Figure 2 is a schematic diagram of the use state of the reconstruction patch of the present invention;

[0018] Figure 3 It is a cross-sectional schematic diagram of the reconstruction patch of the present invention being fixed on the spine;

[0019] In the figure: 1-supporting plate, 2-fixing wing, 3-tensioning fixing plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 As shown, a spinal repair and reconstruction patch based on human body absorbable material, the human body absorbable material is preferably flexible material, and a composite degradable internal fixation material can be selected; PLA is composited with other materials (polymer L-rotatory / racemic polylactic acid) (PLDLA), PLLA / PGA copolymer; other composite materials (polyethylene terephthalate) (PET).

[0022] The reconstruction patch includes a rectangular strip-shaped support sheet 1, the length of the support sheet 1 is 5 to 6 cm, the width is 1.5 to 2.5 cm, and the thickness is 2 to 3 mm. Four pairs of fixed wings 2 are arranged at intervals on the left and right sides of the support sheet 1. The fixed wings 2 are rectangular sheets. The fixed wings 2 and the support sheet 1 are arranged in a fishbone shape and are integrally formed. The spacing between adjacent fixed wings 2 on the same side of the support sheet 1 is equal to the spacing between the spinous processes of the spine. The thickness of the fixed wings 2 is equal to that of the support sheet 1, the length is 1.5 to 2 cm, and the width is about 1.5 cm. A number of tensioning fixed sheets 3 are fixed at intervals on the center of the upper surface of the support sheet 1. The lower end of the tensioning fixed sheet 3 is fixed to the support sheet 1, and the upper end is tilted. The tensioning fixed sheet 3 is fixed to the support sheet 1 by suturing with absorbable human sutures.

[0023] The method of use of the present invention is as follows:

[0024] like Figure 2 and 3 As shown in the figure, the spinal lesion is first surgically removed, and then the spinal reconstruction is performed. Before the lamina is fixed, a hole is first punched transversely through the spinous process at the front end, with a diameter of 2 to 4 mm; then a titanium screw is connected to the disconnected position of the lamina for fixation to reposition the spine.

[0025] The support piece 1 is vertically attached to the top of the spinous process, the middle part of the support piece 1 wraps the diseased spine, and the upper and lower ends of the support piece 1 extend to the outside of the diseased spine; the upper end of the support piece 1 is sutured and fixed to the upper intact spine, and the lower end of the support piece 1 is sutured and fixed to the lower intact spine; then the fixing wings 2 on both sides are bent inward and completely attached to the vertebral arch plate, and then the fixing wings 2 are sutured and fixed through the holes on the spinous process, the needle passes through the left fixing wing 2, the spinal through hole and the right fixing wing 2, and then reverse sutures are performed, and this is repeated several times to suture and fix the fixing wings 2 on both sides to the spinous process; finally, muscle suture is performed, and during muscle suture, the needle passes through the tensioning fixing piece 3, and the support piece 1 is tensioned and fixed for the second time, while pulling the muscle to prevent local bone collapse.

[0026] In the past, about 4% of the vertebral plate fixation systems had the possibility of revision surgery after collapse, which brought related injuries and risks of reoperation to patients. At present, nylon thread is used for posterior ligament reconstruction of vertebral plate fixation system. Although it reduces the chance of revision surgery after collapse, it still cannot be completely eliminated. When nylon thread is used for ligament reconstruction, only the normal spinous process and the spinous process in the adjacent surgical area can be fixed. The middle spinous process in the surgical area cannot be effectively fixed, affecting the fixation effect. The interspinal repair and reconstruction patch made of human body absorbable material can not only take into account the middle spinous process in the surgical area, but also connect the muscles above the spinous process, increase the upper traction force, and fully strengthen the vertebral plate fixation system. It greatly reduces the risk of bone collapse in the surgical area after surgery, achieving the purpose of effectively reducing surgery-related risks.

Claims

1. A spinal repair and reconstruction patch based on human body absorbable material, characterized in that: The reconstruction patch comprises a rectangular strip-shaped support sheet (1), at least three pairs of fixing wings (2) are arranged at intervals on the left and right sides of the support sheet (1), the fixing wings (2) extend outward, and the fixing wings (2) and the support sheet (1) are integrally formed; the spacing between adjacent fixing wings (2) on the same side of the support sheet (1) is equal to the spacing between the spinous processes of the spine; a plurality of tension fixing sheets (3) are fixed at intervals on the center of the upper surface of the support sheet (1), the lower ends of the tension fixing sheets (3) are fixed on the support sheet (1) and the upper ends are tilted, and the reconstruction patch is made of a flexible human body absorbable material; the fixing wings (2) are rectangular sheets, and the fixing wings (2) and the support sheet (1) are arranged in a herringbone shape; The support sheet (1) is vertically attached to the spinous process, the middle part of the support sheet (1) wraps the diseased spine therein, and the upper and lower ends of the support sheet (1) extend to the outside of the diseased spine; the upper end of the support sheet (1) is sutured and fixed to the upper intact spine, and the lower end of the support sheet (1) is sutured and fixed to the lower intact spine; then the fixing wings (2) on both sides are bent inwards and completely attached to the vertebral arch plate, and then the fixing wings (2) are fixed by suture through the holes punched on the spinous process, the needle passes through the left fixing wing (2), the spinal through hole and the right fixing wing (2), and then reverse suture is performed, and this is repeated several times to suture and fix the fixing wings (2) on both sides to the spinous process; finally, muscle suture is performed, and when suturing the muscle, the needle passes through the tension fixing sheet (3) to perform secondary tensioning and fixing on the support sheet (1), and at the same time, the muscle is pulled to prevent local bone collapse.

2. The intervertebral repair and reconstruction patch based on human body absorbable material according to claim 1, characterized in that: The support sheet (1) has a length of 5 to 6 cm, a width of 1.5 to 2.5 cm, and a thickness of 2 to 3 mm.

3. The intervertebral repair and reconstruction patch based on human body absorbable material according to claim 1, characterized in that: The tensioning fixing sheet (3) is fixed to the supporting sheet (1) by suturing with absorbable sutures.

4. The intervertebral repair and reconstruction patch based on human body absorbable material according to claim 3, characterized in that: The tensioning fixing sheet (3) is a rectangular sheet structure.

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