CN201664337U

CN201664337U - Expansible centrum support frame

Info

Publication number: CN201664337U
Application number: CN2010201063683U
Authority: CN
Inventors: 刘小勇; 唐天驷; 杨惠林; 张伟滨; 刘显东
Original assignee: 刘小勇
Priority date: 2010-01-29
Filing date: 2010-01-29
Publication date: 2010-12-08
Anticipated expiration: 2020-01-29

Abstract

The utility model discloses an expansible centrum support frame, which is integrally formed by shape memory materials. The expansible centrum support frame comprises a hollow cage-shaped body circulated by a plurality of support blades, wherein one end of the support blades is gathered for forming a top end provided with a through hole communicated with an inner cavity of the body, the other end of the support blades is gathered for forming a tail end of the body, a connecting pipe outwards extends from the tail end in the axial direction, the connecting pipe is also connected with the inner cavity of the body, and comprises a first short pipe, a second short pipe and a plurality of railings, the first short pipe is connected with the tail end, the second short pipe is arranged far away from the tail end in the axial direction, and the railings are connected between the first short pipe and the second short pipe. The utility model changes the connecting pipe of the support frame into a railing shape, and the implementation in the practical processing technology can be improved through notches between the railings, so the connecting pipe can be more easily bended. In addition, because of the railing-shaped connecting pipe structure, the weight of the support frame is lighter, and the utility model is more suitable for being used in the centrum.

Description

Expansible vertebral body support

Technical field

This utility model relates to a kind of expansible vertebral body support.

Background technology

Spinal fracture can produce multiple classification of fracture.Soft tissues such as fiber because of the spinal vertebral periphery, the fractured vertebral body of factors such as wound, fibrotic soft tissue can play Stabilization to the fracture fragment, and the pedicle screw technology is used vertebral body periphery soft tissue function exactly, under the passive stretch dilating effect, fractured vertebral body is played the stretching reset response.

And the vertebral fracture that factors such as tumor or inflammation cause, the fibrotic soft tissue of its vertebral body perisporium is many may to be destroyed, the Intrapyramidal expandable stent of implantation (seeing Chinese patent 200610024715.6 and 200820006206.5) of previous design implant behind the vertebral body may be because of the vertebral body perisporium damaged, support may skid off outside the vertebral body; The expandable stent (seeing Chinese patent 200720067399.0) of magnetic tape trailer pipe design is fixed in the pedicle of vertebral arch or between the costovertebral joints, can prevent that support from skidding off the damaged vertebral body of vertebral body periphery, but tail pipe forms (accompanying drawing 2 of seeing Chinese patent 200720067399.0) for dull and stereotyped curling, curling, it is difficult to add the molding in man-hour, and the design does further improvement with it.

Summary of the invention

This utility model purpose provides a kind of expansible vertebral body support, and its tail pipe that has solved existing expansible vertebral body support adds the problem that man-hour, cans was difficult for.

The technical solution of the utility model is: a kind of expansible vertebral body support, form by shape-memory material is integrated, comprise the hollow cage shape main body that surrounds by some support lobes, described some support lobe one ends converge and form the top with the through hole that is communicated with the main body inner chamber, described some support lobe other ends converge the tail end that forms main body, described tail end axially outwards (a promptly caudad axial side away from main body) is extended with connection tube, described connection tube also is communicated with the main body inner chamber, and described connection tube comprises first short tube that joins with tail end, axially away from second short tube of tail end and be connected in described first short tube and described second short tube between some fence.

Because the existence of above-mentioned these fence has been arranged, make to add man-hour in that connection tube is curled that the bending stress that need overcome sheet material itself is smaller, is more prone to cans.

Preferable, in above-mentioned expansible vertebral body support, the bar number of described fence is 2～4.Certainly, under the prerequisite of being convenient to curl, also being fine of the fence of more numbers, but, the easier processing of 2～4 fence.

Further, in above-mentioned expansible vertebral body support, the cross section of described first short tube and described second short tube is " C " shape.

Further, in above-mentioned expansible vertebral body support, be formed with some barbs on described second short tube.These some barbs radially outward open naturally, can be further fixedly the vertebral body support prevent its slippage.

This utility model advantage is:

1, this utility model is used for having around the vertebral body destructive vertebral body Wicresoft pathological changes, the barb that its connection tube tail end can be crossed the pedicle of vertebral arch end is fixed in parapophysis or vertebral plate, change connection tube into paliform, vacancy between the fence makes the practicability in actual processing technique improve, and connection tube is curled be more prone to.The connection tube structure of paliform makes that the weight of support is lighter in addition, is more suitable for using in vertebral body.

Description of drawings

Fig. 1 is the structural representation of this utility model specific embodiment before cans;

Fig. 2 is the another structural representation of this utility model specific embodiment before cans;

Fig. 3 is three structural representation of this utility model specific embodiment before cans;

Fig. 4 is the structural representation of this utility model specific embodiment;

Fig. 5 is the structural representation of external drainage tube of this utility model specific embodiment band or working column;

Fig. 6 a and 6b are that this utility model specific embodiment is at Intrapyramidal working state schematic representation.

Wherein: 1 top; 2 main bodys; 3 tail ends; 4 support lobe; 5 through holes; 6 fence; 7 barbs; 8 first short tubes; 9 second short tubes; 10 external drainage tube or working columns.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further described:

Embodiment:

Extremely shown in Figure 6 as Fig. 4, a kind of expansible vertebral body support, form by shape-memory material is integrated, comprise the hollow cage shape main body 2 that surrounds by some support lobes 4, described some support lobe 4 one ends converge and form the top 1 with the through hole 5 that is communicated with main body 2 inner chambers, described some support lobe 4 other ends converge the tail end 3 that forms main body 1, described tail end 3 axially is outward extended with connection tube, described connection tube also is communicated with main body 2 inner chambers, described connection tube comprises first short tube 8 that joins with tail end 3, axially away from second short tube 9 of tail end 3 and be connected in described first short tube 8 and described second short tube 9 between some fence 6, the cross section of described first short tube 8 and described second short tube 9 is " C " shape, is formed with some barbs 7 on described second short tube 9.Except the shape of connection tube, the basic structure of the expansible vertebral body support of present embodiment and Chinese publication number are that the patent of CN201070385 is similar.

The bar number of described fence 6 is 2～4, as shown in Figure 1 to Figure 3.In the prior art, before carrying out cans, be a monoblock flat board from first short tube, 8 to second short tubes 9, then between first short tube 8 and second short tube 9, do the part hollow out now, form fence 6, make things convenient for cans.

As shown in Figure 5, this utility model in use can external drainage tube of socket or working column 10.During use, the support cold moulding is to insert in the vertebral body behind the tubular structure, shown in Fig. 6 a; Under the effect of body temperature, support is owing to the characteristic of memorial alloy is replied open state, shown in Fig. 6 b then.

This utility model changes the connection tube of support into paliform, and the vacancy between the fence makes the practicability in actual processing technique improve, and connection tube is curled be more prone to; The connection tube structure of paliform makes that the weight of support is lighter in addition, is more suitable for using in vertebral body.

Claims

1. expansible vertebral body support, form by shape-memory material is integrated, comprise the hollow cage shape main body (2) that surrounds by some support lobes (4), described some support lobes (4) one ends converge the top (1) that forms main body (2), described top (1) has the through hole (5) that is communicated with main body (2) inner chamber, described some support lobes (4) other end converges the tail end (3) that forms main body (1), described tail end (3) axially is outward extended with connection tube, described connection tube also is communicated with main body (2) inner chamber, it is characterized in that: described connection tube comprises first short tube (8) that joins with tail end (3), axially away from second short tube (9) of tail end (3) and be connected in described first short tube (8) and described second short tube (9) between some fence (6).

2. expansible vertebral body support according to claim 1 is characterized in that: the bar number of described fence (6) is 2～4.

3. expansible vertebral body support according to claim 1 and 2 is characterized in that: the cross section of described first short tube (8) and described second short tube (9) is " C " shape.

4. expansible vertebral body support according to claim 3 is characterized in that: be formed with some barbs (7) on described second short tube (9).