CN2730336Y

CN2730336Y - Spinal reconstructive reducer implanted in the vertebral body via the vertebral stem

Info

Publication number: CN2730336Y
Application number: CNU200420092563XU
Authority: CN
Inventors: 李孔嘉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-20
Filing date: 2004-09-20
Publication date: 2005-10-05
Anticipated expiration: 2014-09-20

Abstract

The utility model relates to a restorer is rebuild to vertebra via vertebra stem implantation centrum, this restorer is by last abaculus, the abaculus deuterogamies a wedge and constitutes down, utilize on this wedge embedding, down between the abaculus, the stull is upper, lower abaculus, by the volume of whole restorer after receiving its shores in order to change according to clinical needs via the thickness of adjusting the wedge, make this injured centrum of being implanted the restorer receive expand to prop and reset, the steel nail that adopts when effectively having overcome the mode of traditional treatment osteoporosis and vertebra fracture and the disappearance that the benefit bone produced.

Description

Implant the vertebra of vertebral body via the vertebra stem and rebuild positor

Technical field

This utility model relates to a kind of vertebra and rebuilds positor, particularly the vertebra of implanting vertebral body via the vertebra stem is rebuild positor, especially specifically is meant a kind of at the treatment of repressive vertebral fracture, burst vertebral fracture, osteoporosis, the innovative design of employed positor structure when improving.

Background technology

Press, the women of menolipsis all has osteoporosis to a certain degree, when men age is big, identical problem is arranged also; And so-called osteoporosis is owing to calcareous by running off in the skeletal tissue, causes osteopenia, makes skeleton bulking, becomes fragile, dies down, and fracture easily, and this kind phenomenon is obvious especially at vertebrae.

The risk factor of osteoporosis has:

1. ethnic: Black people's bone density is higher, and white man and yellow's bone density are lower, easily suffer from osteoporosis.

2. lifestyle:: smoking, excessive drinking, excessive coffee for drinking, tea, hypomotility or excessive.

3. heredity: the family history person that osteoporosis is arranged.

4. medicine: life-time service steroid, thyroxine, diuretic, tetracycline, heparin, the insane crust medicine in Hangzhoupro, lithium salts, antagonist, contain aluminum antacid and chemotherapy.

5. gonad function:; Male gonad insufficiency of function, women's naturality or because of the early onset menolipsis person due to the operation.

6. sex, physical culture, age: the women is later for 6 to 8 times of the male, build slight of stature, menophania, nullipara and age are healed big person.

When tradition is used for treating the fracture of osteoporosis and vertebrae thereof, can be divided into two kinds of modes, one fixes for making steel nail from the vertebrae rear, and another is for to fix from vertebrae the place ahead kind bone.Yet, beat the fixed mode of steel nail from the vertebrae rear, usually must fixing last two joint vertebras and two joint vertebras down, so a joint vertebra is injured, must sacrifice the mobility of five joint vertebras, cause that the vertebra post is stiff, activity is dumb; In addition, former sclerotin is loose, and the vertebral body of fracture stays next macroscopic-void after resetting, if do not repair, the steel nail of depending merely on the rear fixedly is unsteady, sometimes even can cause and become flexible and rupture, causes operative failure.As for mend the fixed mode of bone from vertebrae the place ahead, then because of need undergo surgery via thoracic cavity or place, abdominal cavity, so, may injure near organ (as pulmonary and blood vessel etc.); And the time that this operation is spent is also longer, simultaneously, need get rib or use donations bone, and infected problem is arranged, and in addition, this mode equally also has the problem of sacrificing vertebra post mobility.

The steel nail that the inventor is adopted during in view of the mode of above-mentioned two kinds of traditional treatment osteoporosis and fractured spinal bones and mend the disappearance that bone produces, Drawing upon is via institute's cumulative relevant knowledge and experience for many years, create positor structure of the present utility model, with the traditional defective of effective solution.

Summary of the invention

The purpose of this utility model is that a kind of vertebra reconstruction positor of implanting vertebral body via the vertebra stem will be provided, it cooperates a wedge to be formed by last abaculus, following abaculus again, utilize this wedge to embed between this upper and lower abaculus, shore upper and lower abaculus, use to change via the thickness of regulating wedge being subjected to its volume of shoring the whole positor in back, make the injured vertebral body of this implanted positor be subjected to expanded support and reset according to clinical needs.

The purpose of this utility model is achieved in that

A kind of vertebra reconstruction positor of implanting vertebral body via the vertebra stem is provided, it is characterized in that, described positor is to be combined by last abaculus, following abaculus and wedge, the described top end face of going up abaculus protrudes out an Embedded Division downwards, on its front end face, be provided with screw, described abaculus Embedded Division place of abaculus on correspondence down is arranged with the formation embedded groove downwards, described wedge is that intercalation is between the Embedded Division and embedded groove of described upper and lower abaculus, to shore described upper and lower abaculus, on its front end face, has a screw.

The outer surface of described upward abaculus is rough-shape.

The outer surface of described abaculus down is rough-shape.

The described upward two side faces of the front and back ends of the Embedded Division of abaculus respectively has indent draw-in groove longitudinally, and form an inverted T-shaped breach and U-shaped breach respectively at the front and back ends of described down abaculus, two sidewalls of described inverted T-shaped breach and U-shaped breach just with described on corresponding being embedded of indent draw-in groove of abaculus.

On the front end face of described abaculus down, be provided with several shrinkage pools, for the corresponding with it phase embedding of implanting instrument location.

The front end face of described wedge extends an Extendible flake downwards.

Described positor is made up of last abaculus, following abaculus and screw piece; The described top end face of going up abaculus protrudes out an Embedded Division downwards, on its front end face, set up screw, described abaculus Embedded Division place of abaculus on correspondence down is arranged with the formation embedded groove downwards, simultaneously the end face that corresponds to each other at Embedded Division and embedded groove forms the cambered surface of tool pair thread segments, supply the screw piece correspondence to screw togather and lock, to shore upper and lower abaculus.

The described outer surface of going up abaculus is the coarse grain shape.

The outer surface of described abaculus down is rough-shape.

The described upward two side faces of the front and back ends of the Embedded Division of abaculus respectively has indent draw-in groove longitudinally, and form an inverted T-shaped breach and U-shaped breach respectively at the front and back ends of described down abaculus, two sidewalls of described T v notch v and U-shaped breach just with described on corresponding being embedded of indent draw-in groove of abaculus.

The front end face of described wedge extends an Extendible flake downwards.

Good effect of the present utility model is:

Because this positor is to burrow via vertebra, under the situation that does not need by abdominal cavity or thoracic surgery, be implanted in the vertebral body that osteoporosis becomes fragile, dies down, so can increase the intensity of vertebral body in view of the above; Simultaneously, wedge or screw piece by this positor embed or are screwed between the upper and lower abaculus, to shore the characteristic of upper and lower abaculus, can outer top expanded support vertebral body, add implantation from the body bone or manually substitute bone, to keep the normal height and the width of vertebral body: in addition, because of the surface of this positor is the matsurface that is covered with the protruding grain that varies in size, so, can help bone growth, also can increase the degree of stability that vertebral body bone engages; And this positor is the vertebral body of implanting injured this joint, can't injure other healthy vertebral body, simultaneously, and the interpyramidal mobility of unlikely sacrifice; Moreover, can change vertical size of positor, adjusting the number that vertebral body is resetted, to reach the ideal vertebral body reconstruction function that resets.

Description of drawings

Fig. 1 stereo appearance figure of the present utility model;

Fig. 2 user mode sketch map of the present utility model;

Fig. 3 another user mode sketch map of the present utility model;

The three-dimensional exploded view of Fig. 4 another preferred embodiment of the present utility model;

The user mode sketch map of Fig. 5 another preferred embodiment of the present utility model;

The three-dimensional exploded view of Fig. 6 another preferred embodiment of the present utility model;

The user mode sketch map of Fig. 7 another preferred embodiment of the present utility model.

With reference to piece number:

Abaculus 11 top end faces on 1

12 Embedded Divisions, 13 indent draw-in grooves

14 substrates, 15 screws

21 embedded grooves, 22 inverted T-shaped breach

28U v notch v 24 sidewalls

25 thread segments, 26 shrinkage pools

3 wedges, 31 screws

2 Extendible flakes, 4 vertebral bodys

41 vertebra stems 42 are implanted the hole

5 nails, 6 screw pieces

The specific embodiment

At first, consult shown in Figure 1ly, positor of the present utility model is by the rough-shape following abaculus 2 of an outer surface rough-shape last abaculus 1, an outer surface and one and upper and

lower abaculus

1,2 cooperatively interacts and the wedge 3 that can embed therebetween combines; Wherein:

Embedded Division 12 is extended at the place, a top end face 11 bottoms that should go up abaculus 1 downwards, and the two side faces at the front and back ends of Embedded Division 12 respectively has indent draw-in groove 13 longitudinally, and connect half arcual substrate 14 at the rearmost end place of last abaculus 1, on the end face of its front end, then has a screw 15, this screw 15 is for combining with implanting instrument, positor is implanted in the vertebral body 4 smoothly;

This time abaculus 2 has opening embedded groove 21 up, the Embedded Division 12 corresponding embeddings that can keep supplying abaculus 1 are ccontaining, and the front and back ends of infra abaculus 2 forms an inverted T-shaped breach 22 and U-shaped breach 23 respectively, and two sidewalls 24 of this routine T v notch v 22 and U-shaped breach 23 are just corresponding with the indent draw-in groove 13 of last abaculus 1;

This wedge 3 is that the gap by 21 of the embedded grooves of the Embedded Division 12 of last abaculus 1 and following abaculus 2 embeds, to shore upper and

lower abaculus

1,2, and change the overall volume of this positor in view of the above, and being provided with a screw 31 in the front end face of wedge 3, can link with insertion tool.

When desire during with the vertebral body 4 of positor implantation vertebra (consulting Fig. 2), also be drilled with one earlier at vertebra stem 41 places of vertebral body 4 and implant hole 42, and with after the Embedded Division 12 of upper and

lower abaculus

1,2 and the embedded groove 21 corresponding embeddings mutually, it is inserted in the implantation hole 42, the mat instrument forces wedge 3 and embeds between Embedded Division 12 and the embedded groove 21 again, upper and

lower abaculus

1,2 is pushed down in the embedding that forces by wedge 3, upper and

lower abaculus

1,2 is made progress respectively, shores downwards, and vertebral body 4 is carried out expanded support longitudinally relatively.

Moreover, the vertebral body 4 of injured this joint after inserting positor, visual sufferer situation, again between the last joint of this joint vertebral body 4 and next joint vertebral body 4 with nail 5 auxiliary fixing (as shown in Figure 3), the degree of stability of increase vertebra.

The design focal point of this positor is to design according to the anatomical structure of vertebra stem 41, and the longitudinal section of vertebra stem 41 is to be situated between between ellipse and the rectangle, and is big up and down, the left and right sides is less.The height of vertebra stem 41 account for vertebral body 4 height 50%～60% between, so if can press its size design, implant the vertebral body positor by vertebra stem 41, at least can reset 50%～60%, add residual vertebral body 4 bones, then can arrive 70%～80%, especially positor of the present utility model can be by the thickness that changes wedge 3, adjust vertical height 20～30% of this positor,, and reach the purpose that vertebral body 4 resets so the vertebral body more than 4 through implanting positor can reach fracture precentrum 4 sizes.

Consult shown in Figure 4 again, it is another embodiment of positor of the present utility model, it is to form at the bottom face of the Embedded Division 12 of last abaculus 1 to have the cambered surface of thread segment 16, has the cambered surface of thread segment 25 and also form on the groove face of the embedded groove 21 of following abaculus 2, utilize a screw piece 6 by corresponding being screwed between the Embedded Division 12 of upper and

lower abaculus

1,2 and the embedded groove 21, and, and shore upper and

lower abaculus

1,2 in view of the above and make it to extend out (as shown in Figure 5) with

thread segment

16,25 corresponding the screwing togather of upper and

lower abaculus

1,2;

Consult Fig. 6 again, another embodiment for this utility model positor, it is that the wall of infra abaculus 2 front end end walls is provided with several shrinkage pools 26, this shrinkage pool 26 is for corresponding chimeric fixing for another implanting instrument, be beneficial to implant action, multiple front end at wedge 3 extends an Extendible flake 32 downwards, with the embedded location of boundary wedge 3, and while and concordant with the front end face of last abaculus 1 (as shown in Figure 7).

Because this positor is to burrow via vertebra 41, under the situation that does not need by abdominal cavity or thoracic surgery, be implanted in the vertebral body 4 that osteoporosis becomes fragile, dies down, so can increase the intensity of vertebral body 4 in view of the above; Simultaneously, wedge 3 or screw piece 6 by this positor embed or are screwed between the upper and

lower abaculus

1,2, to shore the characteristic of upper and

lower abaculus

1,2, can outer top expanded support vertebral body 4, add implantation from the body bone or manually substitute bone, to keep the normal height and the width of vertebral body 4: in addition, because of the surface of this positor 1 is the matsurface that is covered with the protruding grain that varies in size, so, can help bone growth, also can increase the degree of stability that vertebral body 4 bones engage; And this positor is the vertebral body 4 of implanting injured this joint, can't injure other healthy vertebral body 4, simultaneously, and the mobility that unlikely sacrifice vertebral body is 4; Moreover, can change vertical size of positor, adjusting the number that vertebral body 4 is resetted, to reach the ideal vertebral body 4 reconstruction function that resets.

In sum, this utility model embodiment really can reach desired use effect, its disclosed concrete structure again, not only be not seen in like product, also be not disclosed in application before, really meet the regulation and the requirement of Patent Law fully, the whence proposes the application of novel patent in accordance with the law.

Claims

1. A spinal reconstruction resetter implanted into a vertebral body through a vertebral stem, characterized in that the resetter is composed of an upper inlay, a lower inlay and a wedge-shaped block, and the top of the upper inlay faces downward An embedding part protrudes, and a screw hole is provided on its front end surface. The lower inlay block is recessed downward at the inlay part corresponding to the upper inlay block to form an embedding groove. The wedge-shaped block is embedded in the upper and lower There is a screw hole on the front end surface between the embedded part of the embedded block and the embedded groove to support the upper and lower embedded blocks.

2. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem as claimed in claim 1, wherein the outer surface of the upper block is rough.

3. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem as claimed in claim 1, wherein the outer surface of the lower insert is rough.

4. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem according to claim 1, wherein the two sides of the front and rear ends of the embedding part of the upper block each have a longitudinal concave groove, and An inverted T-shaped notch and a U-shaped notch are respectively formed at the front and rear ends of the lower insert, and the two side walls of the inverted T-shaped notch and the U-shaped notch are just in contact with the concave groove of the upper insert. Corresponding to embedding.

5. The spinal reconstructor for vertebral body implantation through the vertebral stem according to claim 1, characterized in that several concave holes are provided on the front end of the lower insert for corresponding implantation tools. embedded positioning.

6. The spinal reconstruction and reset device implanted into the vertebral body via the vertebral stem as claimed in claim 1, wherein the front end of the wedge-shaped block extends downward with an extension piece.

7. A spinal reconstruction resetter implanted into the vertebral body through the vertebral stem, characterized in that the resetter is composed of an upper insert, a lower insert and a screw; the top of the upper insert is convex downward An embedding part is extended, and a screw hole is set on its front end surface. The lower inlay block is recessed downward at the inlay part corresponding to the upper inlay block to form an embedding groove. The arc surface of the threaded section is used for the corresponding screw locking of the screw fittings to support the upper and lower inserts.

8. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem as claimed in claim 7, wherein the outer surface of the upper block is coarse-grained.

9. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem as claimed in claim 7, wherein the outer surface of the lower insert is rough.

10. The spinal reconstruction resetter implanted into the vertebral body via the vertebral stem as claimed in claim 7, wherein the two sides of the front and rear ends of the embedding part of the upper block each have a longitudinal concave groove, and An inverted T-shaped notch and a U-shaped notch are respectively formed at the front and rear ends of the lower insert, and the two side walls of the T-shaped notch and the U-shaped notch are just corresponding to the concave slots of the upper insert embedded.

11. The spinal reconstruction resetter implanted into the vertebral body through the vertebral stem as claimed in claim 7, characterized in that, several concave holes are provided on the front end of the lower insert for corresponding implantation tools. embedded positioning.

12. The spinal reconstructor for vertebral body implantation through a vertebral stem as claimed in claim 7, wherein the front end of the wedge-shaped block extends downward with an extension piece.