CN210990656U - Improved spinous process fixing device - Google Patents

Abstract

The utility model discloses improved generation spinous process fixing device relates to orthopedics medical treatment internal fixation auxiliary equipment technical field, and specific structure is: this fixing device is including setting up in linear component (3) that the intermediate position is "C" type distribution, linear component (3) expand both ends difference fixed connection of shape and be stress portion (2) that "one" style of calligraphy set up, lie in "one" style of calligraphy stress portion (2) fixedly connected with kink (1), its characterized in that both ends set up: the middle part of the linear component (3) is connected with a spring (4), and a sleeve (5) which covers the spring (4) and is used for protecting soft tissues is sleeved outside the linear component (3) in the middle. The utility model has the advantages that: the structure design is reasonable, the fixation is firm, the operation process is simple, no structural damage and operation risk exist, and the operation can be carried out under the small incision or minimally invasive technology.

Description

Improved spinous process fixing device

Technical Field

The utility model relates to an orthopedics medical treatment internal fixation auxiliary equipment technical field, concretely relates to spinous process fixing device, applicable in the treatment that the centrum is unstable, lumbar disc herniation, lumbar vertebrae slippage 1 °, centrum compressibility fracture 1 °, intervertebral disc herniation is fixed, lumbar vertebrae isthmus splits in the decompression art of windowing alone.

Background

The conventional lumbar internal fixation techniques have many inevitable drawbacks in clinical use, destroying the normal physiological structure of the spine without reconstructive repair and accelerating degeneration of the adjacent segments. The initial clinical curative effect of the existing lumbar interspinous dynamic stabilization system is satisfactory, but further clinical application finds that the interspinous internal fixator has a plurality of defects in design and has certain complications related to instruments. The applicant filed earlier, therefore, the name: spinous process fixing device, application number is: 201820714493.9 provides some improvements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, provides a structural design is reasonable, and is fixed firm, and the operation process is simple moreover, does not have structural damage and operation risk, can carry out the improved generation spinous process fixing device who operates under little incision or microtrauma technique.

The utility model discloses improved generation spinous process fixing device, this fixing device construct the body 3 including setting up in the linear that the intermediate position is "C" type distribution, linear constructs the both ends that body 3 expandes the shape and is the stress portion 2 that "one" style of calligraphy set up respectively, is located "one" style of calligraphy stress portion 2 fixedly connected with kink 1 that both ends set up, linear construct the middle part of body 3 and connect and be provided with spring 4. The linear structure body 3 positioned in the middle is externally sleeved with a sleeve 5 which can wrap the spring 4 and is used for protecting soft tissues.

The utility model has the advantages that:

1) the middle part of the linear component 3 is provided with a spring 4 in a connecting manner, the outer sleeve of the linear component 3 positioned in the middle is provided with a sleeve 5 which can wrap the spring 4 and is used for protecting soft tissue, and compared with a corrugated bending part arranged in a comparison file, the corrugated component has the following advantages that: a. elastic dynamic traction: according to the three-column balance principle of the human spine, the rear column of the spine is pulled and fixed by power, on one hand, the pressure of the front column is relieved, on the other hand, the tension of the spinous process of the rear column is relieved, so that the extrusion to the injury of intervertebral discs and compressed bones and the pain caused by the tension injury of the ligament of the spinous process are relieved, compared with a corrugated bending part, the arranged spring 4 has the advantages of increased elasticity and enhanced elasticity, is more suitable for the fixation of the spinous process, has the spring effect, strengthens the dynamic activity between the spinous processes, maintains the forward bending movement by limited stretching, can also buffer the stress pulling between the spinous processes, adopts multi-ring design to decompose the tension; b. elastic dynamic fixation: connecting and fixing the upper spinous process and the lower spinous process of the pathological section, and keeping the mobility of the pathological section within a certain range so as to prevent horizontal ectopic slippage of a vertebral body, disorder of facet joints and hyperosteogeny and keep the anatomical structure and the spinal biomechanical structure of a patient; c. elastic dynamic support: utilize its rigidity material speciality and spring 4 shape, sleeve 5 supports, prevents that the loss of centrum segment overall height from providing a non-loaded holding power to the center pillar, makes the lumbar vertebrae keep middle and back post height when stretching backward, avoids the narrow incidence of canalis spinalis and intervertebral foramen to reduce, and sleeve 5 that sets up simultaneously can prevent to cause the damage to the soft tissue around the spinous process.

2) The fixing device uses memory alloy material, which has super elasticity and shape memory property; the multi-ring spiral structure has a spring effect on the structural design, plays a role in dynamic stable fixation, combines the material advantages of the device with the structural characteristics, can disperse the load transmission of strong internal fixation, avoid stress shielding, recover the intervertebral space height, unload the load of the rear fibrous ring, reduce the load of the corresponding segment facet joint, control abnormal movement of the vertebral body through the load bearing of the elastic fixator, recover the vertebral body height, relieve pain, reconstruct a spinous process ligament complex, and retain the physiological mobility of the pathological segment of the vertebral body of a patient to a certain extent, thereby avoiding or slowing the occurrence of compensatory degeneration of the adjacent segment;

3) this fixing device simple structure, the simple operation, can operate under the local anesthesia, the operation process is simple, need not to damage any ligament and bone tissue, the complication is few, no nerve, spinal cord injury risk, postoperative 24h can be discharged, recovery time is short, the postoperative can not cause adjacent segmental degeneration, be adapted to lumbar vertebrae unstability, lumbar disc herniation, lumbar vertebrae slippage 1 °, lumbar vertebrae facet joint degeneration, intervertebral disc originated pain, central authorities, side recess and intervertebral foramen stenosis, the decompression of simply windowing is put into, the adjacent segmental degeneration of fusion is put into.

Drawings

The figure is the schematic structural diagram of the present invention.

In the figure: a bending part 1, a stress part 2, a linear component 3, a spring 4 and a sleeve 5.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses constitute by kink 1, stress part 2, linear component 3, spring 4, sleeve 5, specific structure is: the fixing device comprises a linear component 3 which is arranged in the middle position and distributed in a C shape, two ends of the unfolded shape of the linear component 3 are respectively and fixedly connected with a stress part 2 arranged in a line shape, the stress part 2 arranged in the line shape and arranged at the two ends is fixedly connected with a bending part 1, and the middle part of the linear component 3 is connected with a spring 4. The linear structure body 3 positioned in the middle is externally sleeved with a sleeve 5 which can wrap the spring 4 and is used for protecting soft tissues.

The using method comprises the following steps: before an operation 1, measuring the interval between spinous processes of an X-ray photo plate, minimally invasive incision at the back center of lumbar vertebra, exposing the upper spinous process and the lower spinous process of a pathological change section, perforating a special perforator at the front 1/3 root of the upper spinous process and the rear 1/3 root of the lower spinous process, selecting a spinous process memory alloy dynamic stabilizer and a sleeve 5 with proper specifications according to pathological change conditions and measurement, placing the spinous process memory alloy dynamic stabilizer and the sleeve in ice physiological saline for cold treatment, enabling a bent part 1 and a linear structure body 3 to be in a shape of a Chinese character 'yi', limitedly stretching a spring 4, penetrating the spring into a pre-drilled spinous process hole, and installing another fixing device at the opposite side of the spinous; after the fixing device recovers the elastic memory function after the heat treatment, the upper end and the lower end of the bending part 1 can be clamped at the root of the opposite spinous process and tightly attached to the bone surface, the original length of the spring 4 is recovered to form traction force, and the height of the front column is recovered. The structure is firm in fixation, simple in operation process, free of structural damage and operation risks, capable of being operated under a small incision or minimally invasive technology, and capable of achieving rehabilitation exercise 24 hours after operation. The bending part 1 is convenient to install the root of the spinous process after being straightened and deformed when being cooled, and restores the original structure after being heated to be tightly attached to the surface of the spinous process. The stress part 2 resists the action of pressure and tension in the internal stress part of the bone according to the thickness of the spinous process. The linear structure body 3 is selected according to the interval after drilling the upper spinous process and the lower spinous process, so that the three columns are kept balanced and stable. The spring 4-shaped design at the linear structure between the spinous processes ensures that the spring has a spring effect, strengthens the dynamic movement between the spinous processes, maintains the forward bending movement by limited stretching, also can buffer the stress traction between the spinous processes, and adopts a multi-ring design to decompose the tension, thereby avoiding the fatigue fracture of the internal fixator. The sleeve 5 plays a role in supporting and protecting soft tissues, prevents surrounding tissues from being clamped and pressed in the spring 4, and has a supporting function on the rear pillar.

Claims (1)

1. Improved generation spinous process fixing device, this fixing device are including setting up in linear component body (3) that the intermediate position is "C" type distribution, linear component body (3) expand both ends difference fixed connection of shape and are stress portion (2) that "one" style of calligraphy set up, lie in "one" style of calligraphy stress portion (2) fixedly connected with kink (1) that both ends set up, its characterized in that: the middle part of the linear component (3) is connected with a spring (4), and a sleeve (5) which covers the spring (4) and is used for protecting soft tissues is sleeved outside the linear component (3) in the middle.

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