A spinal transarticular screw connector

A connector and joint technology, applied in the field of medical devices, achieves the effects of simple operation, less bleeding, and lessening the burden on patients and society

Active Publication Date: 2020-05-12
SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no device for connecting transarticular screws and pedicle screw rods, which has excellent strength, is easy to operate, has a simple structure, and is low in cost

Method used

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  • A spinal transarticular screw connector
  • A spinal transarticular screw connector
  • A spinal transarticular screw connector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] See image 3 , image 3 It is a structural schematic diagram of a spinal transarticular screw connector of the present invention. The spinal transarticular screw connector is provided with a fixed rod fixed end 1 , a screw fixed end 2 and a connecting rod 3 , one end of the connecting rod 3 is connected to the fixed rod fixed end 1 , and the other end is connected to the screw fixed end 2 . The fixed rod fixed end 1 is provided with a fixed rod fixed end body 11, and the side wall of the fixed rod fixed end body 11 is provided with a screw plug fixing hole 12, and the screw plug fixed hole 12 is fixed on the fixed rod. The end body runs through from the dorsal side to the ventral side.

[0045] See Figure 4 , Figure 4 yes image 3 A-A cutaway view. The body 11 of the fixed end of the fixed rod is provided with a fixed groove 13, and the fixed groove 13 penetrates from the top surface to the bottom surface of the fixed end body of the fixed rod. The axis where t...

Embodiment 2

[0049] See Figure 6 , Figure 6 It is a structural schematic diagram of another spinal transarticular screw connector of the present invention. The transarticular screw connector for the spine is the same as that in Embodiment 1, and a screw plug 4 is also provided on the basis thereof. The spinal transarticular screw connector of this embodiment is equipped with a screw plug, which is more convenient for clinical use. The screw plug 4 matches the screw plug fixing hole 12 . The tail end of the screw plug 4 can be designed as an external hexagon or an internal hexagon, which is convenient to match with a wrench and convenient for insertion and tightening.

Embodiment 3

[0051] See Figure 7 , Figure 7 It is a structural schematic diagram of a spinal transarticular screw internal fixation device system of the present invention. The spinal trans-articular screw internal fixation instrument system includes a spinal trans-articular screw connector 100 and a trans-articular screw 200 . The spinal transarticular screw connector 100 is as described in Embodiment 1 or 2. The transarticular screw 200 is sleeved in the open spherical ring of the spinal transarticular screw connector 100 . see you again Figure 8 , Figure 8 yes Figure 6 A-A cutaway view. The transarticular screw 200 is provided with a transarticular screw tail 2001 and a transarticular screw head 2002, and the transarticular screw tail 2001 is provided with a tapered thread, which matches the tapered thread of the open spherical ring 23, Make the two lockable.

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PUM

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Abstract

The invention relates to a spinal transarticular screw connector. The connector is provided with a fixed bar fixing end, a screw fixing end and a connecting rod connecting the fixed bar fixing end with the screw fixing end, a fixed bar fixing end body is arranged at the fixed bar fixing end, the fixed bar fixing end body is provided with a plug screw fixing hole and a fixing groove, and the head end of the plug screw fixing hole is communicated with the fixing groove; the screw fixing end is provided with a screw fixing end body which is provided with a ball socket, the ball socket is internally provided with a C-shaped opening spherical ring matched with the ball socket, and a taper thread is arranged on the inner wall of the opening spherical ring. The spinal transarticular screw connector can make connection between a transarticular screw and a pedicle screw rod, the strength of internal fixation is increased, better flexion-extension, lateral bending and torsion resistant effects are obtained, the transarticular screw can be implanted according to a correct screw trajectory more conveniently, surgical operation is more convenient, and the connector has the advantages of being minimally invasive, small in damage and low in cost, and conforms to the minimally invasive trend and principles of health economics.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a spinal transarticular screw connector. Background technique [0002] The internal fixation method of pedicle screw combined with titanium rod has been widely used in the treatment of a series of injuries such as spinal degenerative diseases and spinal fractures. It has achieved good results in rebuilding spinal stability, promoting bone graft fusion and restoring spinal sequence. Effect. In general, bilateral pedicle screws are used for fixation. If necessary, a connector can be used to connect the titanium rods on both sides to further increase the strength ( figure 1 ). Unilateral pedicle screw fixation is also used, but its strength is definitely weakened, and it is not used as a routine. [0003] Transarticular screws are screws used to fix the small joints of adjacent segments in spinal surgery. Most of them are auxiliary fixation of other fusion methods. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70
CPCA61B17/7001A61B17/7032A61B17/704
Inventor 谢宁邬春晖唐峰余将明
Owner SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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