阅读说明：本技术 一种用于腰椎滑脱复位的可量化撑开提拉装置 (Quantifiable distraction lifting device for lumbar spondylolisthesis reduction ) 是由 史航 葛海浪 朱磊 吴小涛 朱裕成 马军 耿德虎 于 2020-08-15 设计创作，主要内容包括：本发明公开了一种用于腰椎滑脱复位的可量化撑开提拉装置,包括竖直的上支杆,其顶端左侧一体式连接有水平的刻度尺且底部通过万向节联轴器转动连接有套筒A,所述刻度尺顶部沿着其长度方向设有锯齿且刻度尺上水平滑动连接有椎体纠偏装置,通过椎体纠偏装置对病变滑脱椎体部位进行撑开、提拉,并复位病变滑脱椎体部位。由本发明结构可知,改变传统徒手提拉复位椎体的方式,采用撑开提拉装置,术中椎体撑开和提拉后,可有效改善椎体间的滑脱病变,患者舒适度高,同时通过可量化的操作方式,控制椎体撑开和提拉的幅度,不易导致椎体矫正量过小或过度,极大地提高了病变椎体复位的精确度,且整个装置的可操作性和稳定性更强。(The invention discloses a quantificationally-distracting and lifting device for lumbar spondylolisthesis reduction, which comprises a vertical upper supporting rod, wherein the left side of the top end of the vertical upper supporting rod is integrally connected with a horizontal graduated scale, the bottom of the vertical upper supporting rod is rotatably connected with a sleeve A through a universal joint coupler, sawteeth are arranged at the top of the graduated scale along the length direction of the graduated scale, a vertebral body deviation rectifying device is horizontally and slidably connected onto the graduated scale, and the vertebral body deviation rectifying device is used for distracting and lifting the diseased spondylolisthesis part and restoring the diseased spondylolisthesis. According to the structure of the invention, the traditional mode of lifting and restoring the centrum by hands is changed, the distraction lifting device is adopted, after the centrum is distracted and lifted in the operation, the slippage pathological changes between the centrums can be effectively improved, the comfort level of a patient is high, and simultaneously, the distraction and lifting amplitude of the centrum is controlled through a quantifiable operation mode, the centrum correction amount is not easy to be too small or excessive, the accuracy of restoring the pathological centrum is greatly improved, and the operability and the stability of the whole device are stronger.)

1. The utility model provides a can quantify and strut pulling apparatus for lumbar spondylolisthesis resets which characterized in that: including vertical last branch (1), its top left side integral type is connected with horizontally scale (2) and the bottom rotates through universal joint shaft coupling (3) and is connected with sleeve A (4), horizontal sliding connection has centrum deviation correcting device (5) on scale (2) top is equipped with sawtooth (21) and scale (2) along its length direction, struts, carries through centrum deviation correcting device (5) to pathological change centrum position (6), and resets pathological change centrum position (6).

2. The quantifiable distraction device of claim 1 for reduction of lumbar spondylolisthesis, wherein: the vertebral body deviation correcting device (5) comprises a spiral expanding device (51) and a screw lifting device (52), the spiral expanding device (51) comprises an inverted L-shaped support (511), a knob (512), a gear (513), a pin shaft M (514) and a fixer (515), the inverted L-shaped support (511) is formed by integrally connecting a vertical rod (501) and a transverse base (502), the transverse base (502) is a square box body with a left opening and a right opening, and the graduated scale (2) penetrates through the box body from right to left;

the rear end face of the knob (512) is integrally connected with a rotating rod (516), the rotating rod (516) penetrates through the left side of the box body from front to back, the rear end of the rotating rod (516) is locked through a screw (508), a gear (513) is sleeved on the rotating rod (516) positioned in the box body, and the gear (513) is meshed with the saw teeth (21);

the fixer (515) is vertically and rotatably connected to the two sides of the front side of the upper right part of the box body through a pin shaft M (514);

screw is carried and is drawn device (52) including sleeve B (521), connecting axle (522), is carried and draws stick (523), montant (501) bottom is passed through universal joint shaft coupling (3) and is rotated and connect in sleeve B (521) top, it has two vertical bar spouts (524) to run through relatively on the lateral wall around sleeve B (521) first, and sleeve B (521) endotheca has connecting axle (522), and it has through-hole (525) to run through around connecting axle (522) upper end, it runs through in bar spout (524) and passes through-hole (525) and injects connecting axle (522) in sleeve B (521) to carry and draw stick (523).

3. The quantifiable distraction device of claim 2 for reduction of lumbar spondylolisthesis, wherein: fixer (515) are connected by two otic placodes (504) integral types of arc (503), front and back symmetry and form, round pin axle M (514) runs through in two otic placodes (504), box body, inject fixer (515) in the upper right portion of box body, and both sides around the arc (503) are connected in the upper right portion of box body through the vertical rotation of round pin axle M (514) promptly, arc (503) right-hand member portion just matches the sawtooth groove between sawtooth (21).

4. A quantifiable distraction device for reduction of lumbar spondylolisthesis according to claim 2 or 3, further comprising: a torsion spring (505) is sleeved on a pin shaft M (514) in the box body, under a natural state, the right end portion of the arc-shaped plate (503) is clamped into the sawtooth groove under the elastic action of the torsion spring (505), and when the mobile vertebral body deviation rectifying device (5) needs to be adjusted, the left end portion of the arc-shaped plate (503) is pressed downwards, so that the right end portion of the arc-shaped plate (503) is separated from the sawtooth groove.

5. The quantifiable distraction device of claim 2 for reduction of lumbar spondylolisthesis, wherein: the knob (512) is vertically and rotatably connected with a concave handle (518) through a pin shaft N (517), namely the pin shaft N (517) sequentially penetrates through the left side of the handle (518), the knob (512) and the right side of the handle (518) from left to right.

6. The quantifiable distraction device of claim 2 for reduction of lumbar spondylolisthesis, wherein: and the outer side wall of the notch of the strip-shaped sliding groove (524) is provided with scale marks (526).

7. The quantifiable distraction device of claim 2 for reduction of lumbar spondylolisthesis, wherein: the outer side wall of the lower end of the connecting shaft (522) is provided with threads, the threads are just connected to a screw seat (506) on the universal pedicle screw, the center of the bottom of the connecting shaft (522) is downwards provided with a limiting bulge (527), and the limiting bulge (527) is matched with a clamping groove (71) at the top of a screw rod on the universal pedicle screw (7).

8. The quantifiable distraction device of claim 2 for reduction of lumbar spondylolisthesis, wherein: two sets of circular bulges (41) of bilateral symmetry are arranged on the inner side wall of the bottom of the sleeve A (4) from top to bottom, the central connecting line of each set of circular bulges (41) is intersected with the central line of the sleeve A (4), and when the sleeve A (4) is sleeved on a universal pedicle screw (7) driven into a vertebral body, the circular bulges (41) are just clamped in hole grooves (72) matched with the universal pedicle screw (7).

9. The quantifiable distraction device of claim 1 for reduction of lumbar spondylolisthesis, wherein: the pathological change vertebral body part (6) is a fourth vertebral body (61), a fifth vertebral body (62) and between the fourth vertebral body and the fifth vertebral body, the fourth vertebral body (61) and the fifth vertebral body (62) are both embedded with a universal pedicle screw (7), and the two universal pedicle screws (7) are positioned on the same side and the same vertical line of the lumbar vertebral column.

Technical Field

The invention relates to the field of orthopedic medical instruments, in particular to a quantifiable distraction lifting device for lumbar spondylolisthesis reduction.

Background

Lumbar spondylolisthesis is one of common lumbar degenerative diseases, symptoms such as lumbocrural pain and the like are caused frequently, the life quality of a patient is influenced, and patients who are not treated by conservative treatment need to be treated by an operation.

Most students think that the normal sequence of the spine can be reconstructed by carrying out anatomical reduction on the lumbar spondylolisthesis in the operation, the unbalance of the sagittal plane of the spine is improved, the stability between vertebral bodies is increased, the fusion of operation segments is facilitated, the complications such as the formation of false joints and the failure of internal fixation are avoided, the spondylolisthesis is effectively prevented from being further aggravated, and the method has definite biomechanical advantages; the reduction is also beneficial to relieving spinal stenosis secondary to lumbar spondylolisthesis, the curative effect of the operation is improved, and the operation satisfaction of the patient is increased.

However, lumbar spondylolisthesis often merges pathological intervertebral space height and loses, so the operation is performed on the sagittal plane of the spondylolisthesis, the height of the pathological intervertebral space also needs to be recovered as much as possible, otherwise, the vertebral body is easily pulled up and blocked, pathological changes between the vertebral bodies are further aggravated, great pain is brought to a patient, meanwhile, the vertebral bodies are pulled and unfolded by hands at present, the operation is mainly performed by a simple appliance, the amplitude is not easily controlled by the mode of pulling and unfolding the vertebral bodies by hands, the vertebral body correction amount is too small or excessive, the operation precision is low, the stability is low, how to unfold the vertebral bodies in the operation and pull the vertebral body operation, the intervertebral space height is successfully recovered, and then the spondylolisthesis is reset, and the operation becomes a hotspot and difficulty in clinical discussion at present.

Disclosure of Invention

The invention aims to provide a quantifiable distraction lifting device for lumbar spondylolisthesis reduction, which overcomes the defects of the prior art, solves the problems that the lumbar spondylolisthesis of a patient is often combined with pathological changes, intervertebral space height is lost, vertebral body lifting in an operation is easy to be blocked, pathological changes between vertebral bodies are further aggravated, and great pain is brought to the patient, and simultaneously solves the problems that the amplitude of the existing manual vertebral body distraction lifting is difficult to control, the vertebral body correction amount is easy to be over-small or over-large, the operation precision is low, and the stability is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a can quantify and strut lifting device for lumbar vertebrae slippage resets, includes vertical last pole, and its top left side integral type is connected with horizontally scale and bottom and rotates through the universal joint shaft coupling and is connected with sleeve A, the scale top is equipped with sawtooth and the scale along its length direction and goes up horizontal sliding connection and have centrum deviation correcting device, struts, carries through centrum deviation correcting device to pathological change centrum position to the pathological change centrum position resets.

Further, the vertebral body deviation rectifying device comprises a spiral expanding device and a screw lifting device, the spiral expanding device comprises an inverted L-shaped support, a knob, a gear, a pin shaft M and a fixer, the inverted L-shaped support is formed by integrally connecting a vertical rod and a transverse base, the transverse base is a square box body with a left opening and a right opening, and the graduated scale penetrates through the box body from right to left;

the rear end face of the knob is integrally connected with a rotary rod, the rotary rod penetrates through the left side of the box body from front to back, the rear end of the rotary rod is locked through a screw, a gear is sleeved on the rotary rod positioned in the box body, and the gear is meshed with the sawteeth;

the fixer is vertically and rotatably connected to the two sides of the front side of the upper right part of the box body through a pin shaft M;

the screw is carried and is drawn the device and include sleeve B, connecting axle, carry and draw the stick, the montant bottom is rotated through the universal joint shaft coupling and is connected in sleeve B top, it has two vertical bar spouts to run through relatively on the lateral wall around sleeve B first, and sleeve B endotheca has the connecting axle, and it has the through-hole to run through around the connecting axle upper end, carry and draw the stick to run through in the bar spout and pass the through-hole and inject the connecting axle in sleeve B.

Further, the fixer is formed by connecting the arc, the front and back symmetrical two otic placodes integral type, round pin axle M runs through in two otic placodes, box body, inject the fixer in box body upper right portion, and the arc is connected in both sides around the upper right portion of box body through the vertical rotation of round pin axle M promptly, the right-hand member portion of arc just matches the sawtooth groove between the sawtooth.

Furthermore, a torsion spring is sleeved on the pin shaft M inside the box body, the right end part of the arc-shaped plate is clamped into the sawtooth groove under the elastic action of the torsion spring in a natural state, and when the mobile vertebral body deviation correcting device needs to be adjusted, the left end part of the arc-shaped plate is pressed downwards, so that the right end part of the arc-shaped plate is separated from the sawtooth groove.

Furthermore, the knob is vertically and rotatably connected with a handle in a shape like a Chinese character 'ao' through a pin shaft N, namely the pin shaft N sequentially penetrates through the left side of the handle, the knob and the right side of the handle from left to right.

Furthermore, the outer side wall of the notch of the strip-shaped sliding groove is provided with scale marks.

Furthermore, the outer side wall of the lower end part of the connecting shaft is provided with threads, the threads are just connected to a screw seat on the universal pedicle screw, the center of the bottom of the connecting shaft is downwards provided with a limiting bulge, and the limiting bulge is matched with a clamping groove at the top of the upper screw rod of the universal pedicle screw.

Furthermore, two groups of circular bulges which are bilaterally symmetrical are arranged on the inner side wall of the bottom of the sleeve A from top to bottom, the central connecting line of each group of circular bulges is intersected with the central line of the sleeve A, and when the sleeve A is sleeved on a universal pedicle screw driven into a vertebral body, the circular bulges are just clamped in the hole grooves which are matched with the universal pedicle screw.

Furthermore, the pathological change vertebral body part is a fourth vertebral body, a fifth vertebral body and a space between the fourth vertebral body and the fifth vertebral body, the fourth vertebral body and the fifth vertebral body are both embedded with a universal pedicle screw, and the two universal pedicle screws are positioned on the same side of the lumbar vertebral column and are in the same vertical row.

Compared with the prior art, the invention has the beneficial effects that:

according to the quantifiable distraction lifting device for lumbar spondylolisthesis reduction, the horizontal graduated scale is integrally connected to the left side of the top end of the upper support rod, so that the amplitude of vertebral body distraction of the vertebral body deviation rectifying device can be accurately controlled, collision between diseased vertebral bodies is avoided, and the reduction accuracy is improved.

The invention provides a quantifiable distraction lifting device for lumbar spondylolisthesis reduction, wherein a rotary rod is integrally connected to the rear end face of a knob, the rotary rod penetrates through the left side of a box body from front to back, the rear end of the rotary rod is locked through a screw, a gear is sleeved on the rotary rod positioned in the box body and meshed with saw teeth, and the centrum deviation correction device is finely adjusted by twisting the knob, so that the amplitude of distraction centrums is conveniently controlled, collision between diseased centrums is avoided, and the reduction accuracy is further improved.

The bottom of the vertical rod is rotatably connected to the top of the sleeve B through the universal joint coupler, so that the sleeve B is better butted with a screw seat of a universal pedicle screw, and the device is flexible.

The invention further provides a quantificationally unfolding lifting device for lumbar spondylolisthesis restoration, wherein a torsion spring is sleeved on a pin shaft M positioned in a box body, the right end part of an arc plate is clamped into a sawtooth groove under the elastic action of the torsion spring in a natural state, and when the quantificationally unfolding lifting device is used, the left end part of the arc plate is pressed downwards, so that the right end part of the arc plate is separated from the sawtooth groove, the purpose of adjusting the position of the movable vertebral body correcting device in time is realized, and the requirements of unfolding and lifting vertebral bodies are met.

The knob is vertically and rotatably connected with a concave-shaped handle through a pin shaft N, namely the pin shaft N sequentially penetrates through the left side of the handle, the knob and the right side of the handle from left to right, the pre-estimated distance of the pathological change vertebral body before the operation can be greatly adjusted through the concave-shaped handle, and the device is high in speed and efficiency.

Sixth, the quantifiable distraction lifting device for lumbar spondylolisthesis reduction provided by the invention has the advantages that the scale marks are arranged on the outer side wall of the notch of the strip-shaped chute, so that the amplitude of lifting the vertebral body by the lifting rod can be conveniently controlled, and the reduction accuracy is improved.

The invention further provides a quantifiable distraction lifting device for lumbar spondylolisthesis reduction, wherein threads are arranged on the outer side wall of the lower end part of the connecting shaft, the center of the bottom of the connecting shaft is downwards provided with a limiting bulge, and when the lower end part of the connecting shaft is in threaded connection with a screw seat on a universal pedicle screw, the limiting bulge is just embedded into a clamping groove in the top of a screw on the universal pedicle screw, so that the screw seat does not rotate any more, and the operation stability is improved.

Eighthly, when the sleeve A is sleeved on a universal pedicle screw driven into a vertebral body, the circular bulges are just clamped in hole grooves matched with the universal pedicle screw, namely the positions of the sleeve A and an upper support rod are limited, so that the subsequent vertebral body correcting device can be conveniently unfolded and pulled to operate.

The invention provides a quantified distraction lifting device for lumbar spondylolisthesis reduction, wherein a universal pedicle screw is embedded in each of a fourth vertebral body and a fifth vertebral body, and the two universal pedicle screws are positioned on the same side of a lumbar vertebral column and are in the same vertical row, so that the device is convenient to mount and follow-up vertebral body distraction and lifting operations.

The quantifiable distraction lifting device for lumbar spondylolisthesis reduction provided by the invention changes the traditional mode of lifting the reduction vertebral body by hands, adopts the distraction lifting device, completes distraction and lifting operations of the vertebral body in the operation simultaneously, simultaneously the vertebral body is lifted and lifted without obstruction due to distraction, avoids aggravating pathological changes between the vertebral bodies, greatly reduces pain feeling, has high comfort level for patients, controls the amplitude of distraction and lifting of the vertebral body through the quantifiable operation mode, is not easy to cause over-small or excessive correction amount of the vertebral body, greatly improves the precision of spondylolisthesis reduction of pathological changes, has stronger operability and stability of the whole device, further reduces the operation time of doctors, and has extremely high application and popularization values.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a side longitudinal sectional view of the overall structure of the present invention.

Fig. 3 is a perspective view of the screw expanding device of the present invention.

Fig. 4 is a structural sectional view of a sleeve B of the present invention.

Fig. 5 is a structural view of the universal joint coupling of the present invention.

Fig. 6 is a structural view of a diseased vertebral body part of a human body according to the present invention.

FIG. 7 is a schematic view of a prior art universal pedicle screw of the invention.

Fig. 8 is a diagram of a clinical embodiment of the present invention, and fig. 8 is an operating table, on which a human body lies.

Detailed Description

The present invention is further illustrated by the following detailed description in conjunction with the accompanying drawings, it being understood that the following detailed description is illustrative of the invention only and is not intended to limit the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which will occur to those skilled in the art upon reading the present specification.