Auxiliary supporting equipment for treating spondylolisthesis

Abstract

The invention relates to the technical field of medical instruments, in particular to auxiliary supporting equipment for treating spondylolisthesis, small cylinders are arranged on transverse support faces forming L-shaped supporting frames, a plurality of sets of small cylinders are vertically and mutually overlapped to form vertical auxiliary supporting parts, and the auxiliary supporting parts are installed in the transverse support faces of the upper L-shaped supporting frame and the lower L-shaped supporting frame. According to the auxiliary supporting equipment for treating spondylolisthesis, auxiliary supporting is effectively carried out on spondylolisthesis, stress borne by the spondylolisthesis is reduced, the spondylolisthesis can be partially reset under the ligament and muscle strength of the spondylolisthesis, the spine part is allowed to move to a certain degree of freedom, and therefore the spondylolisthesis effect is improved. More convenience is brought to work and life of a patient in the future, auxiliary reduction is effectively carried out on vertebral slippage, and vertebral slippage is further consolidated and prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to an auxiliary support device for treating spondylolisthesis. Background Art

[0002] Spondylolisthesis, also known as spondylolisthesis or spinal instability, is a spinal disease mainly involving abnormal displacement between vertebral bodies. This situation is usually due to damage or degeneration of the ligaments and muscles between vertebral bodies, resulting in the inability of vertebral bodies to maintain their normal positions properly. Spondylolisthesis is mainly divided into the following three types: congenital spondylolisthesis, isthmic spondylolisthesis, and degenerative spondylolisthesis.

[0003] Among them, isthmic spondylolisthesis is the most main and common type of spondylolisthesis. The process of spondylolisthesis is usually as follows: due to the existence of a certain normal physiological curvature angle in the vertebral body itself, under the action of repeated mechanical stress on the vertebrae, on the one hand, it causes minor wear or fracture of the pars interarticularis (the part connecting the vertebral body and the lamina), and on the other hand, due to the decrease in the stability-maintaining performance of the anterior longitudinal ligament, posterior longitudinal ligament, and related muscle tissues, the spine gradually shows a situation of spondylolisthesis. Currently, for spondylolisthesis, spinal fusion surgery is used to treat it, which is one of the most commonly used treatment methods. The purpose is to stabilize the affected area and prevent further sliding. In this process, doctors will use autologous bone graft materials, artificial synthetic materials, or other biocompatible materials to fill between two or more vertebral bodies to promote them to grow together to form a whole.

[0004] However, spinal fusion has the following defects: 1. Local stiffness: The fused area will lose its normal motor function, resulting in a reduced range of motion in this part.

[0005] 2. Adjacent segment disease: In the long term, the adjacent unfused intervertebral discs may degenerate faster due to bearing greater pressure, which is called adjacent segment disease (ASD).

[0006] 3. Fusion failure: Not all fusions can be successful. Sometimes the bones cannot heal completely, resulting in the formation of a false joint, which may require reoperation.

[0007] Without considering spinal fusion surgery, there are currently few available surgical methods. Summary of the Invention

[0008] The object of the present invention is to provide an auxiliary support device for treating spondylolisthesis. The auxiliary support device for treating spondylolisthesis effectively solves the problem of providing auxiliary support for the already occurred vertebral slippage, reducing the stress it receives. The slipped vertebral body can perform partial reduction function under the action of its own ligament and muscle strength, allowing a certain degree of activity and freedom for this spinal part, which will be more convenient for the patient's future work and life, effectively assisting in the reduction of vertebral slippage, and further consolidating and preventing spondylolisthesis.

[0009] To achieve the above object, the present invention provides an auxiliary support device for treating spondylolisthesis, including four groups of fixing screws, an L-shaped support frame, and an auxiliary support part. The four groups of fixing screws fix the L-shaped support frame on the left and right sides of the upper and lower two adjacent vertebral bodies of the slipped vertebral body respectively. The L-shaped support frame includes a vertical support surface and a horizontal support surface. Fixing screw holes are opened on the vertical support surface. A number of small columns are provided on the horizontal support surface of the L-shaped support frame. The number of small columns are stacked from top to bottom to form a vertical auxiliary support part. The auxiliary support part is supported within the horizontal support surfaces of the upper and lower two groups of L-shaped support frames, and a protective cover is sleeved outside the auxiliary support part.

[0010] Further, the small columns are cylindrical.

[0011] Further, an artificial ligament is sleeved on the auxiliary support part, and the left and right sides of the artificial ligament are respectively sleeved and fixed on the column bodies of the left and right two groups of auxiliary support parts.

[0012] Further, support soft pads are provided between the small columns.

[0013] Further, the protective cover is in a mesh shape and surrounds the outer side surface of the column body of the auxiliary support part.

[0014] Further, adjustment screw holes are opened on the horizontal support surface of the L-shaped support frame and adjustment screws are arranged in cooperation.

[0015] Further, screw holes are opened at the bottom of the support soft pads where the L-shaped support frames are in contact. The nail column of the adjustment screw is inserted into the screw holes of the support soft pads where the L-shaped support frames are in contact.

[0016] Further, an elastic rope is arranged in the middle of the auxiliary support part, and the elastic rope strings together a number of small columns and the support soft pads between the number of small columns.

[0017] Compared with the prior art, the advantages of the present invention are as follows: The fixing screws are respectively fixed on the upper and lower adjacent vertebrae of the slipped vertebra to build a support point for the auxiliary support device. The L-shaped support frames are divided into upper and lower groups. The L-shaped support frames play the roles of supporting and clamping the small cylinders and the supporting soft pads. The small cylinders are stacked to form an auxiliary support part. The auxiliary support part is divided into left and right groups and is respectively fixed on the left and right sides of the slipped vertebra. The auxiliary support part plays the role of supporting the slipped spine, reduces the stress it receives, and the auxiliary support part can increase or decrease the number of small cylinders according to the long distance of the slipped vertebra of the patient.

[0018] Further, the small cylinder is a cylinder or other columnar structure. The circular surface of the cylinder has a stress surface with good bending deformation, so that the columns of the auxiliary support part can provide a relatively uniform buffer elastic force to the patient when bent to any angle.

[0019] Further, an artificial ligament is sleeved on the auxiliary support part. The artificial ligament surrounds the outer side surface of the slipped spine. The artificial ligament plays the roles of preventing the further slippage and resetting of the slipped spine. The artificial ligament is a soft fiber that can be absorbed by the human body.

[0020] Further, a supporting soft pad is provided on the small cylinder. The supporting soft pad is a soft pad surface and plays the role of buffering the pressure on the small cylinder. It allows the patient to perform certain bending and stretching movements and has a good buffering force. The diameter of the pad surface of the supporting soft pad is larger than the cross-sectional diameter of the small cylinder. The larger soft pad surface can well bear the weight of the small cylinder and also reduce the situation that the small cylinder breaks away from the pad surface of the supporting soft pad during the stress activity.

[0021] Further, the protective cover on the auxiliary support part wraps around the outer side surface of the entire auxiliary support part. The protective cover is in a net shape and can provide good stretching tension. The protective cover plays the role of maintaining the shape of the overall auxiliary support part, avoiding the problem that the small cylinders and the supporting soft pads in the auxiliary support part slip out due to excessive body movements of the patient, and allowing partial dislocation between the small cylinders, thereby allowing the patient to perform waist-turning movements.

[0022] Further, the adjusting screw is screwed into the screw hole of the small cylinder or the supporting soft pad, so that the nut of the adjusting screw presses on the transverse support surface of the L-shaped support frame, playing the role of pressing the auxiliary support part by the L-shaped support frame surface to adjust the supporting force. The pressure size is controlled by adjusting this screw to adjust to the appropriate stretching elastic force range of the auxiliary support part for the patient.

[0023] Further, each group of the auxiliary support parts on the L-shaped support is independently installed. Each group of the auxiliary support parts can adjust its own length and position according to the slipped vertebra, not limited to the complete symmetry of the left and right auxiliary support parts. The small cylinder is made of an elastic material, and the auxiliary support part can effectively follow the inclination of the patient's spine so that the small cylinders squeeze and contract with each other.

[0024] Furthermore, an elastic rope is provided in the middle of the auxiliary support part. The elastic rope strings together the support cushions between several small cylinders and several other small cylinders, which can solve the problem that the small cylinders fall out of the auxiliary support part due to excessive movement during the waist-rotation movement of the patient, and improve the stability of the use of the auxiliary support part. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the drawings and embodiments.

[0026] Figure 1 It is a front view schematic diagram of the present invention.

[0027] Figure 2 It is a schematic diagram of the protective cover of the present invention.

[0028] Figure 3 It is a three-dimensional schematic diagram of the present invention.

[0029] Figure 4 It is a three-dimensional schematic diagram of the present invention with a protective cover.

[0030] Figure 5 It is a partial enlarged schematic diagram of the present invention.

[0031] Figure 6 It is a structural schematic diagram of the L-shaped support frame of the present invention.

[0032] Figure 7 It is a cross-sectional schematic diagram of the elastic rope on the auxiliary support part of the present invention.

[0033] Figure 8 It is a cross-sectional schematic diagram of the adjusting screw installed in the adjusting screw hole of the present invention.

[0034] Reference numerals: fixing screw 1, L-shaped support frame 2, small cylinder 3, auxiliary support part 4, artificial ligament 5, support cushion 6, protective cover 7, adjusting screw 8, fixing screw hole 9, adjusting screw hole 10, elastic rope 11, vertical support surface 12, horizontal support surface 13. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] An auxiliary support device for treating spondylolisthesis according to the present invention is composed of fixing screws 1, L-shaped support frames 2, small columns 3, auxiliary support parts 4, artificial ligaments 5, support cushions 6, protective sleeves 7, adjusting screws 8, fixing screw holes 9, adjusting screw holes 10, elastic ropes 11, vertical support surfaces 12, and horizontal support surfaces 13. The four groups of fixing screws 1 are respectively fixed on the left and right sides of the upper and lower two adjacent vertebral bodies of the spondylolisthetic vertebral body. The L-shaped support frame 2 is an L-shaped support plate surface. Fixing screw holes 9 are opened on the vertical support surface 12, and an opening is provided on the support surface of the horizontal plate. The screw columns of the fixing screws 1 penetrate into the fixing screw holes 9 of the L-shaped support frame 2, and the screw heads of the fixing screws 1 are fixed on the spondylolisthetic vertebral body. Small columns 3 are provided on the horizontal support surface 13 of the L-shaped support frame 2. The small columns 3 are cylinders. Several groups of small columns 3 are stacked on top of each other to form a vertical auxiliary support part 4. The auxiliary support part 4 is installed inside the horizontal support surfaces 13 of the upper and lower two L-shaped support frames 2. An artificial ligament 5 is sleeved on the auxiliary support part 4. The left and right sides of the artificial ligament 5 are respectively sleeved and fixed on the column bodies of the left and right two groups of auxiliary support parts 4. Support cushions 6 are provided on the surfaces of the small columns 3. Several groups of small columns 3 and support cushions 6 are stacked on top of each other in an alternating manner to form the auxiliary support part 4. The diameter of the cushion surface of the support cushion 6 is larger than the cross-sectional diameter of the small column 3. A protective sleeve 7 is sleeved on the auxiliary support part 4. The protective sleeve 7 is in a mesh shape. The protective sleeve 7 surrounds the outer side surface of the column body of the auxiliary support part 4. Screw holes are opened at the bottoms of the small columns 3 that are in contact with the L-shaped support frame 2. Threads are provided on the adjusting screws 8. The adjusting screws 8 pass through the opening on the horizontal plate surface of the L-shaped support frame 2, and the screw columns of the adjusting screws 8 are inserted into the screw holes of the small columns 3 that are in contact with the L-shaped support frame 2. Rotate the adjusting screws 8 to screw the threads into the screw holes of the small columns 3. Screw holes are opened at the bottoms of the support cushions 6 that are in contact with the L-shaped support frame 2. The screw columns of the adjusting screws 8 are inserted into the screw holes of the support cushions 6 that are in contact with the L-shaped support frame 2. The small columns 3 are provided with hollow through holes, and the support cushions 6 are provided with hollow through holes. The elastic ropes 11 are passed through the through holes of the small columns 3 and the support cushions 6. Several groups of small columns 3 and support cushions 6 connected in series form a string of auxiliary support parts 4.

[0036] It should be noted that the surgery can be performed using the anterior approach or the lateral approach, and there is no need to perform the posterior approach surgery. The patient can lie flat on the operating table. First, the four groups of fixing screws 1 are fixed, and then the auxiliary support part 4 together with the protective sleeve 7 is placed between the upper and lower two L-shaped support frames 2, and the adjusting screws 8 are adjusted to tightly contact and fix the auxiliary support part 4.

[0037] It should be noted that the artificial ligament 5 is an optional setting. Generally, the use of the artificial ligament 5 can be not considered, which is due to the surgical difficulty and risk. In some cases, the placement of the artificial ligament 5 can be implemented, and its purpose is to further improve the effect of preventing spondylolisthesis. It should be noted that if the setting of the artificial ligament 5 is to be implemented, the structure of the artificial ligament 5 needs to be placed into the catheter first. Generally speaking, since the anterior longitudinal ligament in the front of the spine is some important tissues and organs of the human body. Specifically: in the cervical and thoracic vertebrae parts, in front of the anterior longitudinal ligament are mainly the esophagus and trachea, as well as the relevant soft tissues. In the thoracic region, there are also important blood vessels such as the thoracic aorta in front of the anterior longitudinal ligament. In the lumbar part, in front of the anterior longitudinal ligament is close to large blood vessels such as the abdominal aorta and inferior vena cava, as well as abdominal organs such as the pancreas and small intestine. Generally, there is a "depression" in the central part of the spine, and this position is generally a relatively weak part of some connective tissues. During the operation, the structure of the artificial ligament 5 can be considered to be placed through this position.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. All equivalent controls or modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. An auxiliary support device for treating spondylolisthesis, characterized in that: The invention comprises four sets of fixing screws (1), an L-shaped support frame (2), and an auxiliary support portion (4). The four sets of fixing screws (1) respectively fix the L-shaped support frame (2) on the left and right sides of the upper and lower adjacent vertebrae of the slipped vertebrae. The L-shaped support frame (2) comprises a vertical support surface (12) and a horizontal support surface (13). The vertical support surface (12) is provided with fixing screw holes (9). The horizontal support surface (13) of the L-shaped support frame (2) is provided with a plurality of small columns (3). The plurality of small columns (3) are stacked from top to bottom to form a vertical auxiliary support portion (4). The auxiliary support portion (4) is supported in the horizontal support surfaces (13) of the upper and lower sets of L-shaped support frames (2). The auxiliary support portion (4) is provided with a protective cover (7) on its outer cover.

2. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: The small column (3) is a cylinder.

3. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: The auxiliary support part (4) is covered with an artificial ligament (5), and the left and right sides of the artificial ligament (5) are respectively covered and fixed on the left and right columns of the auxiliary support part (4).

4. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: Support cushions (6) are provided between the small columns (3).

5. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: The protective cover (7) is in a grid shape, and the protective cover (7) surrounds the outer side surface of the column of the auxiliary support part (4).

6. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: An adjustment screw hole (10) is provided on the horizontal support surface (13) of the L-shaped support frame (2) and is matched with an adjustment screw (8).

7. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: The bottom of the supporting cushion (6) fitted to the L-shaped supporting frame (2) is provided with a screw hole, and the nail column of the adjusting screw (8) is inserted into the screw hole of the supporting cushion (6) fitted to the L-shaped supporting frame (2).

8. The auxiliary support device for treating spondylolisthesis according to claim 1, characterized in that: An elastic rope (11) is provided in the middle of the auxiliary support portion (4), and the elastic rope (11) connects the plurality of small columns (3) and the supporting cushions (6) between the plurality of small columns (3) in series.

Images