CN201001764Y

CN201001764Y - Adjustable agnail or right-angle sting type intervertebral fusion device

Info

Publication number: CN201001764Y
Application number: CNU200520047456XU
Authority: CN
Inventors: 赵定麟; 赵杰; 陈德玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-13
Filing date: 2005-12-13
Publication date: 2008-01-09
Anticipated expiration: 2015-12-13

Abstract

The utility model is an adjustable hangnail or right-angle nailed vertebra merging device, comprising a merging device (2) hangnail or a right-angle nailed enhancing device (1). Simple structure and convenient use guarantee that the vertebra merging device does not slide forwardly or backwardly through the enhancing nail, increasing the stability and braking strength of vertebra merging device effectively. The utility model can be widely used for spine surgeon clinical cases, including cervical vertebra, thoracic vertebra and lumbar vertebra.

Description

A kind of adjustable type agnail or right angle thorn formula Invasive lumbar fusion device

Technical field

This utility model relates to medical instruments field, is a kind of scalable side agnail or right angle thorn formula Invasive lumbar fusion device.

Technical background

Along with average life span prolongation, traffic accident and motional injury increase, thus spinal column degenerated and traumatic case cumulative year after year, wherein needing operator, have more than the hundreds of thousands of them every year approximately.

Spinal operation is of a great variety, comprises decompression, the fixation that resets and orthopedic procedure etc.But every example operation postoperative all needs operation vertebra joint is merged, with the effect that obtains to stablize.Fusion in the past is based on from the body bone grafting, not only the time long, bone time of fusion about 3～June, getting bone because of need from its elsewhere of patient body increases patient suffering and complication.For this reason, there are various inner fixers to come out in recent years; In many inner fixers, Invasive lumbar fusion device has the advantage of its uniqueness, because of it places between two vertebras, not only contact surface is big, easily bone fusion, and can recover immediately vertebra joint highly and tension force, therefore society is then moved towards in postoperative patient's next day activity of can getting up 2～3 weeks.But presently used vertebra joint fusion device stability is relatively poor, easily outwards skids off or inwardly slips into and various complication occur, even cause paralysis, so that have to perform the operation once more.

Summary of the invention

This utility model provides a kind of adjustable type agnail or right angle thorn formula Invasive lumbar fusion device, when implanting intervertebral space, because its unique agnail type design can be fixed in fusion device between the vertebra joint steadily.Turn adjusting device again can become vertical configuration by parastate with agnail, and thrusts vertebra joint surface of bone, strengthening the fusion device constant intensity simultaneously, also can recover the height and the physiology curvature of vertebra joint effectively.

This utility model adjustable type agnail or right angle thorn formula Invasive lumbar fusion device are made of fusion device 2 and agnail stiffening device 1 two parts.Fusion device 2 is flat wedge shape or domatic, and there is the agnail of placement stiffening device groove 23 in its central authorities, have for placing the defective region 22 that the bone grafting fragment is used in both sides.

Description of drawings

Fig. 1 is an element fusion device sketch map of the present utility model;

Fig. 2 is element agnail of the present utility model or right angle thorn device sketch map;

Fig. 3 is the adjustment type agnail formula Invasive lumbar fusion device of assembled state of the present utility model;

Fig. 4 is the adjustment type straight thrust formula Invasive lumbar fusion device of another kind of assembled state of the present utility model;

In the accompanying drawing, Fig. 2-the 1st, agnail type device sketch map; Accompanying drawing 2-2 is a right angle thorn type device sketch map; Fig. 3 is an agnail type stiffening device formula Invasive lumbar fusion device; Fig. 4 is a right angle thorn type stiffening device formula Invasive lumbar fusion device.

Symbol description:

1 agnail stiffening device, 11 agnail stiffening devices, 12 right angles thorn stiffening device;

2 fusion devices, 211 agnails backward, 212 agnails forward, 22 oval hollow bone graft area, 23 place agnail stiffening device grooves 24 revolves the hole, and 25 hold the hole.

The specific embodiment:

Following embodiment further specifies the present invention, is limited to content of the present utility model but can not limit.

This utility model adjustable type agnail formula Invasive lumbar fusion device is made up of two groups of following elements: Invasive lumbar fusion device 2 and agnail device 1.Shown fusion device 2 is deltiod, and front end is thick, the rear end is thin, and the thickness of front and back differs about 1mm; The side is seen and is wedge or domatic, and transverse diameter is greater than anteroposterior diameter 1mm.When overlooking, respectively there is an oval hollow area 22 both sides, are used to place the bone grafting fragment; The centre of two oval hollow area 22 is that a rectangle defective region (depressed area) is to place agnail stiffening device groove 23, is used to put agnail device 1, can each one piece of agnail device 1 of both sides, see accompanying drawing 1 and 3.Fusion device 2 the place aheads have 2 to hold hole 24.Thorn formula device 1 can be to have agnail 11 or right angle thorn 12, is the flat side of strip or circular, and the place ahead one end is a head of screw, length is less than the anteroposterior diameter 2mm of fusion device 2, the agnail of long back weak point or right angle thorn were 3～6 before the side had, and 50 °～85 ° of 1/3 tilted rearward prevent to move behind the Invasive lumbar fusion device; 2/3 turns forward, and angle roughly the same prevents that fusion device 2 from skidding off (accompanying drawing 2) forward.

Fusion device 2 highly be 4～8mm, can be for 4,5,6,7, five kinds of specifications of 8mm, the little 1mm in its rear is so be wedge shape or domatic.The width of fusion device 2 is 11～13mm, can be 11,12, three kinds of specifications of 13mm.Length 10～12mm can be respectively 10,11, three kinds of specifications of 12mm.Its four jiaos is circular or middle fillet.Agnail device 1 has 1 pair, promptly 2 pieces, places the rectangle damaged (or depression) of the storing agnail device of fusion device 2 central authorities to distinguish 23.Agnail device 1 length 9～11mm, as be respectively 9,10, three kinds of specifications of 11mm, be flat side's shape or oblate shape, a side has agnail (or right angle thorn), thickness is respectively 2～4mm, as 2,3, three kinds of 4mm; Agnail device 1 is positioned at medial surface, the long 1.5～2.8mm of thorn, totally 3～6; The place ahead thorn is long, and the rear thorn is short; Can be that thorn point 2/3 turns forward, 1/3 recedes; The right angle thorn then can be chimeric mutually in this way, and angle is 90 °.In naturalness, agnail device 1 is parallel shape (accompanying drawing 3) with fusion device 2; During use, half-twist～100 °, 1 in agnail device is vertical configuration with fusion device 2 planes, crosses slightly and inclines to increase its stability, so can make agnail thrust the vertebra deep and plays braking and strut effect.

This adjustable type agnail formula Invasive lumbar fusion device is applied to cervical operation, also is applicable to thoracic vertebra and lumbar surgery after amplifying in proportion.

This utility model adjustable type agnail formula Invasive lumbar fusion device earlier to the deep decompression of target vertebra part, selects the fusion device of corresponding specification to embed target vertebra part under softened state before use afterwards.Fusion device 2 leading edges are parallel with vertebra joint leading edge, or lower slightly 1～2mm.Be inserted to agnail device 1 front end head with supporting screwdriver by revolving hole 24 afterwards,, agnail embedded under the target vertebra part superior vertebra in the quadrate bone matter respectively by clockwise (right side) or (left side) direction half-twist～100 ° counterclockwise.Whether the agnail vertebra joint fusion device of then checking implantation is stable.Require the fusion device of implantations stable, invariant position, undirected preceding or slide backward and be standard.

This utility model provides a kind of agnail Invasive lumbar fusion device that can effectively regulate, not only reasonable in design, easy to use, and effectively increase the stability and the severity of braking of vertebra joint fusion device by the agnail of reinforcement, thereby guaranteed that Invasive lumbar fusion device can not skid off forward, more can not slip into backward.

This utility model can be widely used in the spinal surgery clinical case, comprises cervical vertebra, thoracic vertebra and lumbar vertebra.

Claims

1, a kind of adjustable type agnail or right angle thorn formula Invasive lumbar fusion device is characterized in that stinging stiffening device (1) by Invasive lumbar fusion device (2) and agnail or right angle forms; Described fusion device (2) is deltiod, and front end is thick, the rear end is thin; Side is seen and is wedge shape or domatic, transverse diameter is greater than anteroposterior diameter, overlooking both sides respectively has an oval hollow area (22) that is used to place the bone grafting fragment, and central authorities one rectangularly are used to place agnail stiffening device groove or damaged (23), and this fusion device (1) front end has 2 24 and revolves the hole and hold hole (25); Described agnail or right angle thorn stiffening device (1) is the flat side of strip or circular, and the place ahead one end is a head of screw, and length is less than the anteroposterior diameter of above-mentioned Invasive lumbar fusion device, 3～6 of the thorns of long back weak point before the side has.

2, a kind of adjustable type agnail as claimed in claim 1 or right angle thorn formula Invasive lumbar fusion device is characterized in that a side of described agnail or right angle thorn stiffening device (1) has agnail (11) or right angle thorn (12), and thickness is respectively 2～4mm; Agnail (11) or right angle thorn (12) are positioned at medial surface, the long 1.5～2.8mm of thorn, and totally 3～6, the place ahead thorn is long, and the rear thorn is short.

3, a kind of adjustable type agnail as claimed in claim 1 or right angle thorn formula Invasive lumbar fusion device is characterized in that the thorn point 2/3 of described agnail or right angle thorn stiffening device (1) turns forward, and 1/3 recedes.

4, a kind of adjustable type agnail as claimed in claim 1 or right angle thorn formula Invasive lumbar fusion device is characterized in that described right angle thorn (12) is can be chimeric mutually, and angle is 90 °.

5, a kind of adjustable type agnail as claimed in claim 1 or right angle thorn formula Invasive lumbar fusion device is characterized in that the thickness before and after the described fusion device (2) differs 1mm; Transverse diameter is greater than anteroposterior diameter 1mm.

6, a kind of adjustable type agnail as claimed in claim 1 or right angle thorn formula Invasive lumbar fusion device, that it is characterized in that described fusion device (2) highly is 4～8mm, and the little 1mm in its rear, width are 11～13mm, length is respectively 10～12mm, and its angle is circular or middle fillet.