CN201119906Y - Joint coupling device for vertebral column - Google Patents

Abstract

The utility model relates to a universal connector of a vertebra, which comprises a first connecting seat, a second connecting seat, a connecting bar and an anti-slip element. The utility model is characterized in that the anti-slip element is arranged between the first connecting seat and the second connected seat, the connecting bar is respectively fixed on an upper vertebra and a lower vertebra, and the first connecting seat and the second connecting seat are moveably sleeved in a whole. The universal connector has the advantages that the universal connector of a vertebra is not limited by angles, operation is fast and simple, and the universal connector of a vertebra can simultaneously and primarily lock and fix the positions of the connecting bar which is respectively fixed on the upper vertebra and the lower vertebra on the connector in a single locking action.

Description

The vertebra joint coupling

Technical field

This utility model relates to the joint coupling that vertebra uses, and especially a kind ofly can be separately fixed at connecting rod on the upper and lower vertebrae in order to winding, has the adapter of the universal adjustment of the angle do not limit.

Background technology

When human body because of wounds such as traffic accident cause vertebrae when dislocation, must impose arthrodesis of spine originally the vertebrae structure of dislocation rescue and revert back to normal morphology; In addition, occipital bone and atlas (atlas) articular ligament of also may attacking rheumatoid arthritis causes occipital bone to descend and high-order slippage of cervical vertebra and then compressing neck marrow, produce as symptoms such as stiff on foot, hand and foot numbness, amyotrophy, need correct in order to avoid severity of symptoms with operation.And the high-order slippage of cervical vertebra also can cause cervical pain, also must impose operative treatment when medicine and rehabilitation can't ease the pain.The operative treatment of above-mentioned spondylopathy needs a kind of joint coupling that is suitable for arthrodesis of spine.

Summary of the invention

Main purpose of the present utility model is to provide a kind of joint coupling that is used in arthrodesis of spine.After upper and lower vertebrae is finished arthrodesis of spine and is applied, can not be subjected to the characteristic of angle limits by joint coupling, the angle between the vertebrae is up and down done flexible universal adjustment, so that the vertebrae locations of structures reverts back to optimal morphology.

Another purpose of the present utility model be to provide a kind of tool fast, the vertebra joint coupling of ease of Use characteristic.When with the angle adjustment of upper and lower vertebrae when both locations of structures are optimal morphology, by single screw can will be separately fixed at once to lock knot fixing the position of the connecting rod on the upper and lower vertebrae, to simplify operation process and to reduce artificial careless mistake in the operation technique.

For reaching above-mentioned purpose, vertebra joint coupling of the present utility model comprises first Connection Block, second Connection Block, and connecting rod and Non-slip material is characterized in that: said Non-slip material is located between said first Connection Block and said second Connection Block; Said connecting rod is separately fixed on the upper and lower vertebrae; Said first Connection Block and said second Connection Block are the movable sleeve integrator; The said first Connection Block body is laterally established a U-shaped hole, the said U-shaped hole string cover one said connecting rod that is fixed on the vertebrae; The said first Connection Block left surface is oblique establishes a screw hole and one and the packing screw of said screw hole coupling; The said first Connection Block right flank stretches out and establishes a connecting rod, said Non-slip material of said connecting rod socket and said second Connection Block; Said Non-slip material left circles anchor ring is established a location groove, and the left side ratchet face engagement of said Non-slip material right side ratchet face and said second Connection Block, slides on connecting rod in order to prevent second Connection Block; Said Non-slip material on said connecting rod with the said second Connection Block socket; Establish a nut at the tail end of said connecting rod, said nut is integral first Connection Block, Non-slip material and the second Connection Block triplicity; The said second Connection Block body bottom end vicinity is laterally established a through hole, is fixed on said connecting rod string on the vertebrae and is placed in said through hole and said through hole and extends upward and establish a line of rabbet joint.

Vertebra joint coupling of the present utility model has the universal adjustment characteristic of 360 degree after with first Connection Block, Non-slip material and the second Connection Block three movable sleeve integrator.After finishing the arthrodesis of spine operation, first Connection Block of said joint coupling and second Connection Block can be separately fixed in order to winding, connecting rod on the following vertebrae, again the angle of two vertebraes is not limit the universal optimal morphology that is adjusted to of angle by adapter, locking the first Connection Block screw with the packing screw forces the connecting rod of winding on first Connection Block to move to second Connection Block, oppress again and the connecting rod of winding on second Connection Block is fixedly clamped as the line of rabbet joint of second Connection Block such as the lock ring, can be with single locking action simultaneously with on being separately fixed at, the position of the connecting rod on the following vertebrae is once locked knot and is fixed on the adapter.

The advantage of vertebra joint coupling of the present utility model is as follows:

1. said joint coupling has the characteristic of the angle limits of not being subjected to, and the angle between the vertebrae is up and down done flexible universal adjustment, can make the vertebrae locations of structures revert back to optimal morphology.

2. has quick, the easy characteristic of operation technique.It is fixing that knot is once locked in the position that can be only can will be separately fixed at the connecting rod on the upper and lower vertebrae by a screw, to simplify operation process and to reduce artificial careless mistake in the operation technique.

Description of drawings

Fig. 1 is stereoscopic figure of the present utility model;

Fig. 2 is the schematic perspective view of this utility model structure.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing thereof this utility model is illustrated further.

See also Fig. 1 and Fig. 2, vertebra joint coupling 3 of the present utility model comprises first Connection Block 31 and second Connection Block 32, wherein, first Connection Block, 31 bodies are laterally established a U-shaped hole 311 and are passed for a connecting rod 21 tail ends, the oblique screw of establishing of left surface is locked for packing screw 4, and right flank then stretches out and establishes a connecting rod 312; Second Connection Block, 32 body bottom end vicinities are laterally established a through hole 322, for string cover one connecting rod 11 that is fixed on the vertebrae, and are extended upward by this through hole 322 and to establish a line of rabbet joint 323; But socket one Non-slip material 5 and second Connection Block 32 on described connecting rod 312, these Non-slip material 5 left circles anchor rings are established a location groove 51, and Non-slip material 5 right sides establish a ratchet face 52, just can with 321 engagements of second Connection Block, 32 left side ratchet faces; And after Non-slip material 5 and second Connection Block 32 are socketed on the connecting rod 312, can in view of the above first Connection Block 31, Non-slip material 5 and 32 triplicitys of second Connection Block be integral again with the tail end of the said connecting rod of a nut 6 lock knots.But before packing spiral shell 4 was not locked as yet, first Connection Block 31 and second Connection Block 32 were unrestricted each other free to rotate on connecting rod 312, and this promptly the utlity model has the cause of the universal adjustment characteristic of 360 degree.

Please consult Fig. 2 again, joint coupling 3 of the present utility model can be separately fixed at connecting rod 11 and 21 on the upper and lower vertebrae (not being shown in drawing) in order to winding, when the tail end of connecting rod 21 passes the U-shaped hole 311 of first Connection Block 31, and the tail end of connecting rod 11 passes the bottom through-hole 322 of second Connection Block; Again that two vertebraes are required fixed angle is not limit the characteristic of the universal adjustment of angle by adapter 3, when being adjusted to both locations of structures and being optimal morphology, utilize packing screw 4 to lock first Connection Block, 3 screws again, force the tail end of connecting rod 21 to move to second Connection Block 32, the line of rabbet joint 323 of oppressing second Connection Block 32 again is as being fixedly clamped the tail end of connecting rod 11 as the lock ring.Thus, the single action of locking packing screw 4 can be fixed on connecting rod 21 and connecting rod 11 on the adapter 3 simultaneously.

Above embodiment is only for the usefulness that this utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique under the situation that does not break away from spirit and scope of the present utility model, can also be made various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

The primary clustering symbol description

11: connecting rod

21: connecting rod

3: adapter

31: the first Connection Blocks

311:U shape hole

312: connecting rod

32: the second Connection Blocks

321: ratchet face

322: through hole

323: the line of rabbet joint

4: the packing screw

5: Non-slip material

51: detent

52: ratchet face

6: nut

Claims (5)

1, a kind of vertebra joint coupling comprises first Connection Block, second Connection Block, and connecting rod and Non-slip material is characterized in that: said Non-slip material is located between said first Connection Block and said second Connection Block; Said connecting rod is separately fixed on the upper and lower vertebrae; Said first Connection Block and said second Connection Block are the movable sleeve integrator.

2, vertebra joint coupling according to claim 1 is characterized in that: the said first Connection Block body is laterally established a U-shaped hole, the said U-shaped hole string cover one said connecting rod that is fixed on the vertebrae; The said first Connection Block left surface is oblique establishes a screw hole and one and the packing screw of said screw hole coupling; The said first Connection Block right flank stretches out and establishes a connecting rod, said Non-slip material of said connecting rod socket and said second Connection Block.

3, according to claim 1 and 2 described vertebra joint couplings, it is characterized in that: said Non-slip material left circles anchor ring is established a location groove, and the left side ratchet face engagement of said Non-slip material right side ratchet face and said second Connection Block.

4, according to claim 1 and 3 described vertebra joint couplings, it is characterized in that: said Non-slip material on said connecting rod with the said second Connection Block socket; Establish a nut at the tail end of said connecting rod, said nut is integral first Connection Block, Non-slip material and the second Connection Block triplicity.

5, according to claim 1 and 4 described vertebra joint couplings, it is characterized in that: the said second Connection Block body bottom end vicinity is laterally established a through hole, and the said connecting rod string that is fixed on the vertebrae is placed in said through hole, and said through hole extends upward and establishes a line of rabbet joint.

Images