CN220089609U - Fixing device for spinal surgery - Google Patents

Abstract

The utility model discloses a fixing device for spinal surgery, which comprises a bidirectional threaded rod, wherein the outer surfaces of two ends of the bidirectional threaded rod are respectively connected with an adjusting block in a threaded manner, the inside of each adjusting block is in threaded connection with the bidirectional threaded rod, the upper end of the bidirectional threaded rod is connected with a sliding rod in a penetrating manner between two adjusting blocks, the upper ends of one side, far away from the bidirectional threaded rod, of each adjusting block are respectively movably connected with a fixing nail in a penetrating manner, and the rear side of each fixing nail is provided with a limiting device on the upper end face of each adjusting block. According to the utility model, the fixing nails are adjusted according to the depth of the fixing nails entering the bone, the fixing nails are fixed through the limiting device, and then the bidirectional threaded rods are rotated to drive the adjusting blocks at two sides to move along the sliding rods, so that the adjustment can be performed according to the position distance required to be penetrated by the fixing nails at two sides, and the fixing nails can be added according to the quantity required to be fixed by the vertebra and the increase of the fixing range by connecting the threaded rods with the threaded holes.

Description

Fixing device for spinal surgery

Technical Field

The utility model relates to the technical field of spinal surgery fixation, in particular to a spinal surgery fixation device.

Background

The spine is one of the most important parts of a human body, has the functions of supporting the trunk, protecting viscera, performing exercise and the like, and needs to be treated by operation when the spine has problems; after the spine surgery, the spine needs to adopt an internal fixation method to maintain the stability of the vertebral body and promote healing, and along with the development of medical level, the internal fixation material is changed from a stainless steel material to a titanium alloy material, so that the titanium alloy internal fixation has better fatigue resistance, and after being implanted into a human body, the internal fixation has no uncomfortable symptoms and does not influence magnetic resonance examination;

aiming at the prior art, the patent number is: CN201922382396.1, an internal fixing device for spinal surgery, it is equipped with a ball joint between two bone nails through the device, and through the regulation of ball joint, thus make connect convenience between two bone nails, especially after the bone nail is installed to the bone, carry out flexible connection with the bone nail of different height, firstly alleviate patient's painful department, second bone nail length can be inconsistent, and because be equipped with the locking bolt on the ball joint can lock ball joint, make the ball joint after being connected to the bone nail, form a shaft-like thing, thereby fix and support first bone nail and second bone nail, when the device is reserved in patient's body, still be favorable to patient's vertebra correction, therefore the utility model has solved the problem that current shaft-like thing can not flexible connection.

However, the fixing device is difficult to assemble and fix according to the required length, and the bone screw connection and installation are unstable; thus, the existing need is not met, for which we propose a spinal surgical fixation device.

Disclosure of Invention

The utility model aims to provide a fixing device for spinal surgery, which solves the problems that the fixing device proposed in the background art is difficult to assemble and fix according to the required length and the bone screw connection and installation are unstable.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a backbone surgery fixing device, includes the bi-directional threaded rod, the equal threaded connection of surface at bi-directional threaded rod both ends has the regulating block, and the inside and the bi-directional threaded rod threaded connection of regulating block, the upper end of bi-directional threaded rod just is located between the both sides regulating block through connection has the slide bar, both ends the equal movable through connection of one side upper end that the bi-directional threaded rod was kept away from to the regulating block has the staple, the rear side of staple just is located the up end of regulating block and is equipped with stop device.

Preferably, a sliding groove is formed in the front end of one side, far away from the bidirectional threaded rod, of the adjusting block, sliding blocks are fixedly arranged on two sides, close to the upper end, of the fixing nails, and the sliding blocks are slidably connected in the sliding groove.

Preferably, the limiting device comprises a fixed block, a pull rod is movably connected in the fixed block in a penetrating manner, a limiting plate is fixedly connected to the outer surface of the pull rod inside the fixed block, and two sides of the limiting plate are slidably connected to the inside of the fixed block.

Preferably, one side of limiting plate and the inside one end fixedly connected with spring of fixed block, and the surface of spring winding and pull rod, the fixed nail is close to one side surface equidistance of fixed block and leaves and be equipped with a plurality of spread groove, the pull rod runs through the one end and the spread groove joint of fixed block.

Preferably, the rear side and the front side that the regulating block is close to the bottom all offer the screw hole, the inside threaded connection of screw hole has the threaded rod, the one end threaded connection that the regulating block was kept away from to the threaded rod has another regulating block, the junction threaded connection of regulating block and threaded rod has the nut.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, one end of the pull rod is far away from the connecting groove and extrudes the spring in the fixing block, then the sliding blocks at the two sides of the fixing nail are adjusted by sliding with the sliding grooves in the adjusting block according to the depth of the fixing nail entering the bone, after the adjustment is finished, the limit on the pull rod is released, the spring releases the pressure and pushes the limiting plate to move towards one side close to the fixing nail until one end of the pull rod is clamped in the connecting groove, so that the fixing nail is fixed, after the fixing nail is finished, the bidirectional threaded rod is rotated, the adjusting blocks at the two sides of the outer surface are driven to move along the sliding bars while the bidirectional threaded rod is rotated, so that the adjustment can be carried out according to the required penetration position distance of the fixing nails at the two sides, and the threaded rod is in threaded connection with the threaded holes at the bottom side of the adjusting block and is connected and fixed by using the nuts, so that the fixing nail can be added according to the increase of the quantity and the fixing range of the vertebra required fixing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a top cross-sectional view of the entirety of the present utility model;

fig. 3 is a schematic structural diagram of the present utility model at a in fig. two.

In the figure: 1. a two-way threaded rod; 2. a slide bar; 3. an adjusting block; 4. fixing nails; 5. a slide block; 6. a fixed block; 7. a threaded rod; 8. a threaded hole; 9. a connecting groove; 10. a pull rod; 11. a limiting plate; 12. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 3, an embodiment of the present utility model provides: the utility model provides a backbone surgery fixing device, includes two-way threaded rod 1, the equal threaded connection of surface at two ends of two-way threaded rod 1 has regulating block 3, and the inside and the 1 threaded connection of two-way threaded rod of regulating block 3, and the upper end of two-way threaded rod 1 just is located between the two-side regulating block 3 and runs through and be connected with slide bar 2, and one side upper end that two-way threaded rod 1 was kept away from to two-end regulating block 3 all activity runs through and is connected with staple 4, and the rear side of staple 4 just is located the up end of regulating block 3 and is equipped with stop device.

The spout has been seted up to the one side front end that the regulating block 3 kept away from two-way threaded rod 1, and the both sides that staple 4 is close to the upper end are all fixed to be equipped with slider 5, and slider 5 sliding connection is in the inside of spout, through the degree of depth according to staple 4 entering bone, adjusts the slider on staple 4 both sides and the inside spout slip of regulating block 3.

The limiting device comprises a fixed block 6, a pull rod 10 is movably connected in the fixed block 6 in a penetrating manner, a limiting plate 11 is fixedly connected to the outer surface of the inside of the fixed block 6, two sides of the limiting plate 11 are slidably connected to the inside of the fixed block 6, one side of the limiting plate 11 is fixedly connected with a spring 12 with one end of the inside of the fixed block 6, the spring 12 is wound on the outer surface of the pull rod 10, a plurality of connecting grooves 9 are formed in the equidistant separation of one outer surface of one side of the fixed nail 4, which is close to the fixed block 6, one end of the pull rod 10 penetrates through the fixed block 6, is clamped with the connecting grooves 9, one end of the pull rod 10 is far away from the connecting grooves 9 by pulling the pull rod 10, the spring 12 in the fixed block 6 is extruded, after the fixed nail 4 is adjusted, the limitation of the pull rod 10 is released, the spring 12 releases the pressure and pushes the limiting plate 11 to move towards one side, which is close to the fixed nail 4, until one end of the pull rod 10 is clamped in the connecting grooves 9, so that the fixed nail 4 is fixed.

Screw holes 8 are formed in the rear side and the front side, close to the bottom, of the adjusting block 3, a threaded rod 7 is connected with the inner threads of the screw holes 8, one end of the threaded rod 7, far away from the adjusting block 3, is connected with another adjusting block 3 in a threaded mode, a nut is connected with the connecting portion of the adjusting block 3 and the threaded rod 7 in a threaded mode, the threaded rod 7 is connected with the screw holes 8 in the bottom of the adjusting block 3 in a threaded mode, the screw holes are used for connection and fixation, and the fixing nails 4 can be added according to the increase of the quantity and the fixing range, which are needed to be fixed by the spine.

When the fixing device is used, one end of the pull rod 10 is far away from the connecting groove 9 and extrudes the spring 12 in the fixing block 6, then the sliding blocks at two sides of the fixing nail 4 are adjusted by sliding with the sliding grooves in the adjusting block 3 according to the depth of the fixing nail 4 entering into bones, after adjustment is finished, the limit on the pull rod 10 is released, the spring 12 releases pressure and pushes the limiting plate 11 to move towards one side close to the fixing nail 4 until one end of the pull rod 10 is clamped in the connecting groove 9, the fixing nail 4 is fixed, after the fixing of the fixing nail 4 is finished, the bidirectional threaded rod 1 is rotated, the adjusting block 3 at two sides of the outer surface is driven to move along the sliding rod 2 while the bidirectional threaded rod 1 is rotated, so that the adjustment can be performed according to the required penetration position distance of the fixing nail 4 at two sides, the threaded rod 7 is connected with the threaded holes 8 at the bottom side of the adjusting block 3 by using nuts, the fixing nail 4 can be added according to the increase of the required fixing quantity and the fixing range of the vertebrae, and finally the adjusted fixing nail 4 is fixedly mounted on bones.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A spinal surgery fixation device comprising a bi-directional threaded rod (1), characterized in that: the utility model discloses a bidirectional screw rod, including two-way threaded rod (1), fixed nail (4) are all movably connected in the equal threaded connection of surface at two ends of two-way threaded rod (1), and the inside and two-way threaded rod (1) threaded connection of fixed nail (4), the upper end that just is located two-sided adjusting block (3) of the upper end of two-way threaded rod (1) is connected with slide bar (2) in the through-hole between two-way threaded rod (1) and the adjusting block (3), and the rear side of fixed nail (4) just is equipped with stop device.

2. A spinal surgical fixation device as recited in claim 1 wherein: the adjustable screw is characterized in that a sliding groove is formed in the front end of one side, far away from the bidirectional threaded rod (1), of the adjusting block (3), sliding blocks (5) are fixedly arranged on two sides, close to the upper end, of the fixing nails (4), and the sliding blocks (5) are connected inside the sliding groove in a sliding mode.

3. A spinal surgical fixation device as recited in claim 1 wherein: the limiting device comprises a fixed block (6), a pull rod (10) is movably connected in the fixed block (6) in a penetrating mode, a limiting plate (11) is fixedly connected to the outer surface of the inside of the fixed block (6) through the pull rod (10), and two sides of the limiting plate (11) are slidably connected to the inside of the fixed block (6).

4. A spinal surgical fixation device as recited in claim 3 wherein: one side of limiting plate (11) and the inside one end fixedly connected with spring (12) of fixed block (6), and the surface of spring (12) winding and pull rod (10), fixed nail (4) are close to one side surface equidistance of fixed block (6) and leave and be equipped with a plurality of spread groove (9), one end and spread groove (9) joint that pull rod (10) run through fixed block (6).

5. A spinal surgical fixation device as recited in claim 1 wherein: screw holes (8) are formed in the rear side and the front side, close to the bottom, of the adjusting block (3), threaded rods (7) are connected with internal threads of the screw holes (8), one end of each threaded rod (7), far away from the adjusting block (3), of each adjusting block (3) is connected with another adjusting block (3) through threads, and nuts are connected with the joints of the adjusting blocks (3) and the threaded rods (7) through threads.