Spine minimally invasive distraction repair double-cavity elastic implant and use method thereof

Abstract

The invention discloses a spine minimally invasive distraction repair double-cavity elastic implant and a use method thereof. The implant comprises a double-cavity silica gel shell, an injection port formed in the shell and a check valve arranged on the shell, the double cavities are hollow before being implanted, and a solid supporting column is arranged between the double cavities. The device has the advantages that minimally invasive implantation is achieved, harm to the human body is smaller, and postoperative recovery time of a patient is shortened; after the implant is implanted, the silica gel cavity is filled with liquid silica gel or normal saline for final forming of the implant, so that the implant can be attached to a spine vertebral plate, and long-term stable implantation is facilitated; compared with a spinal screw-rod system in the current market, the spinal screw-rod system belongs to elastic and flexible fixation, and segment movement function loss and stiff pain caused by rigid fixation are avoided; local stress of the spine segment can be corrected through the silica gel support, stress is dispersed, overload is limited, and decline is delayed; the spinal stenosis section is expanded according to a set target of an operation, and compressed nerves are decompressed, so that pain is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a double-cavity elastic implant for minimally invasive spinal distraction and repair and a use method thereof. Background Art

[0002] According to relevant data, nearly 85% of human diseases originate from the spine. More than 80% of Chinese teenagers have sub-healthy cervical spines. Nearly 30% of people over 30 years old will experience spinal bone degeneration and joint instability. 97% of middle-aged people suffer from different forms of spinal diseases. The prevalence of cervical spondylosis in people aged 50-60 is as high as 50%. 80% of elderly people suffer from scoliosis from childhood. Spinal health seriously affects the quality of human life.

[0003] It is well known that there are many types of spinal diseases with complex causes. In particular, spinal nerve pain caused by different reasons is the most prominent and has the widest impact. It is also a topic that modern spinal medicine must face.

[0004] With the development of modern medicine, different solutions have been gradually formed according to different causes of spinal diseases. However, different solutions have their own advantages and disadvantages. For example, although traditional conservative anti-inflammatory drugs can relieve pain, they are prone to cause nerve compression and mechanical imbalance. In severe cases, they can aggravate degeneration and are prone to recurrence. The currently popular nail-rod system decompression and fixation surgery also faces the disadvantages of open method, large trauma surface, postoperative stiffness and pain, loss of activity, and vertebral degeneration. In addition, there is also a popular surgical method of minimally invasive resection and decompression of the lesion and narrow tissue under endoscopy with bone marrow forceps. To a certain extent, it can also alleviate the symptoms of spinal nerve pain caused by nerve compression and relieve the patient's pain, but this method also has its disadvantages, such as causing damage to the original structure of the spine, mechanical imbalance, settlement and collapse, and aggravated degeneration.

[0005] In view of the above situation, it is necessary to improve the existing treatment methods for spinal diseases so that they can adapt to the current needs for spinal disease treatment. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a double-cavity elastic implant for minimally invasive spinal distraction repair, including a double-cavity silicone shell, an injection port arranged on the shell, and a check valve arranged on the shell. The double-cavity is hollow inside before implantation and a solid support column is provided between the two.

[0007] As a further supplement to the technical solution, the support column is made of silicone material.

[0008] As a further supplement to the technical solution, the width of the support column is 3 to 6 mm.

[0009] As a further supplement to the technical solution, the device is foldable.

[0010] As a further supplement to the technical solution, the shell has a thickness of 0.5 to 3 mm.

[0011] As a further supplement to the technical solution, the device is shaped like a spindle after being filled.

[0012] As a further supplement to the technical solution, the outer surface of the implant is frosted by a forming mold.

[0013] A method for using a double-cavity elastic implant for minimally invasive spinal distraction repair comprises the following steps:

[0014] Step 1: Establish surgical access, main instrument operation holes and endoscope observation holes, etc.;

[0015] Step 2: insert the implant between two vertebral plates of the target spinal implantation segment in a minimally invasive manner using an implantation instrument under endoscopy;

[0016] Step 3: After implantation, liquid silicone or saline is injected into the implant cavity through the cavity injection port to a set pressure, and the liquid silicone is allowed to solidify;

[0017] Step 4: After the injection, withdraw the injection needle. The check valve inside the injection port on the cavity can achieve natural blocking of the injection port under the positive pressure in the cavity. Check the blocking effect of the injection port.

[0018] Step 5: Clean the surgical incision and the operation is completed.

[0019] As a further supplement to the technical solution, the injection of physiological saline into the implant cavity does not require waiting for solidification.

[0020] Its beneficial effects are: 1. Minimally invasive implantation causes less harm to the human body and shortens the patient's postoperative recovery time; 2. After the implant is implanted, liquid silicone or saline is filled into the silicone cavity for final shaping of the implant, which can ensure the fit between the implant and the spinal lamina, facilitating long-term and stable implantation; 3. Compared with the spinal screw-rod system currently on the market, it is an elastic and flexible fixation, avoiding the loss of segmental activity and stiffness and pain caused by rigid fixation; 4. Silicone support can correct local force on the spinal segment, disperse stress, limit overload, and delay decline; 5. The narrow segment of the spine can be expanded according to the surgical target, and the compressed nerves can be decompressed and pain can be relieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view of an implant of the present invention;

[0022] Figure 2 is a top view of the implant of the present invention;

[0023] Figure 3is a side view of an implant of the present invention;

[0024] Figure 4 is an axonometric view of an implant of the present invention;

[0025] Figure 5 is a schematic diagram of the implant of the present invention before filling;

[0026] Figure 6 is a cross-sectional view of the implant of the present invention after filling;

[0027] Figure 7 is a schematic diagram of the implant of the present invention after implantation;

[0028] In the figure, 1, first shell; 2, second shell; 3, injection port; 4, check valve; 5, support column. DETAILED DESCRIPTION

[0029] In order to make the technical solution more clear to those skilled in the art, Figure 1-7 The technical solution of the present invention is described in detail:

[0030] A minimally invasive spinal distraction repair double-cavity elastic implant comprises a double-cavity silicone shell, an injection port 3 arranged on the shell, and a check valve 4 arranged on the shell. The double-cavity is hollow before implantation and a solid support column 5 is provided between the two. When in use, it is implanted in a target segment of the human spine in a minimally invasive manner through an implantation instrument under an endoscope. After implantation, liquid silicone or physiological saline can be injected into the silicone cavity through the injection port on the cavity. After the injection, the check valve 4 inside the injection port on the cavity can achieve natural blocking of the injection port under the action of the positive pressure in the cavity. For details, see the attached Figure 6 , to achieve long-term stable implantation, see attached Figure 7 .

[0031] Among them, the support column 5 is made of silicone material.

[0032] The width of the support column 5 is 3-6 mm.

[0033] See attached for details Figures 1 to 4 , the device is foldable.

[0034] The overall volume is small, achieving minimally invasive implantation, and the shell thickness is 0.5 to 3 mm.

[0035] Among them, the device is shaped like a spindle after being filled.

[0036] The outer surface of the implant is sanded using a forming mold.

[0037] A method for using a double-cavity elastic implant for minimally invasive spinal distraction repair comprises the following steps:

[0038] Step 1: Establish surgical access, main instrument operation holes and endoscope observation holes, etc.;

[0039] Step 2: insert the implant between two vertebral plates of the target spinal implantation segment in a minimally invasive manner using an implantation instrument under endoscopy;

[0040] Step 3: After implantation, liquid silicone or saline is injected into the implant cavity through the cavity injection port to a set pressure, and the liquid silicone is allowed to solidify;

[0041] Step 4: After the injection, withdraw the injection needle. The check valve inside the injection port on the cavity can achieve natural blocking of the injection port under the positive pressure in the cavity. Check the blocking effect of the injection port.

[0042] Step 5: Clean the surgical incision and the operation is completed.

[0043] As a further supplement to the technical solution, the injection of physiological saline into the implant cavity does not require waiting for solidification.

[0044] The present invention uses medical implant grade silicone to elastically expand the spinal segments, which not only reduces the pressure on the spinal nerves, but also corrects the local mechanical structure of the segments, disperses stress, and limits overload.

[0045] The present invention adopts a double-cavity structure design for the silicone implant, with solid silicone between the two cavities to ensure the mechanical strength of the spinal segment support, and the two cavities are hollow structures before surgical implantation, which can be folded to minimize the volume before implantation, facilitate minimally invasive implantation, and reduce surgical trauma;

[0046] The present invention provides an injection port on the silicone cavity. After the silicone implant is implanted, liquid silicone or saline can be injected into the cavity through the injection port to fully expand the cavity and fit between the spinous processes of the vertebral lamina to achieve long-term implantation.

[0047] The present invention provides a check valve inside the silicone cavity injection port, and after liquid silicone or physiological saline is injected, natural blocking is achieved under the positive pressure in the cavity, thereby ensuring long-term implantation;

[0048] The outer surface of the silicone implant of the present invention is frosted by a molding die to increase the friction between the implant and the vertebral plate and other tissues.

[0049] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A double-cavity elastic implant for minimally invasive spinal distraction repair, characterized in that: It includes a double-cavity silicone shell, an injection port arranged on the shell, and a check valve arranged on the shell. The double cavities are hollow inside before implantation and a solid support column is provided between the two.

2. The minimally invasive spinal distraction repair double-chamber elastic implant according to claim 1, characterized in that: The support column is made of silica gel.

3. The minimally invasive spinal distraction repair double-chamber elastic implant according to claim 2, characterized in that: The width of the support column is 3-6 mm.

4. The minimally invasive spinal distraction repair dual-chamber elastic implant according to claim 1, characterized in that: The device is foldable.

5. The minimally invasive spinal distraction repair double-chamber elastic implant according to claim 1, characterized in that: The shell has a thickness of 0.5 to 3 mm.

6. The minimally invasive spinal distraction repair dual-chamber elastic implant according to claim 1, characterized in that: After being filled, the device is shaped like a spindle.

7. The minimally invasive spinal distraction repair dual-chamber elastic implant according to claim 1, characterized in that: The outer surface of the implant is ground by a forming grinder.

8. A method for using a double-cavity elastic implant for minimally invasive spinal distraction repair according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Establish surgical access, main instrument operation holes and endoscope observation holes, etc.; Step 2: insert the implant between two vertebral plates of the target spinal implantation segment in a minimally invasive manner using an implantation instrument under endoscopy; Step 3: After implantation, liquid silicone or saline is injected into the implant cavity through the cavity injection port to a set pressure, and the liquid silicone is allowed to solidify; Step 4: After the injection, withdraw the injection needle. The check valve inside the injection port on the cavity can achieve natural blocking of the injection port under the positive pressure in the cavity. Check the blocking effect of the injection port. Step 5: Clean the surgical incision and the operation is completed.

9. The method for using the double-cavity elastic implant for minimally invasive spinal distraction repair according to claim 8, characterized in that: Inject saline into the implant cavity without waiting for it to solidify.

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