CN202365901U - Hollow expansile pedicle screw capable of carrying particles - Google Patents
Hollow expansile pedicle screw capable of carrying particles Download PDFInfo
- Publication number
- CN202365901U CN202365901U CN201120497873XU CN201120497873U CN202365901U CN 202365901 U CN202365901 U CN 202365901U CN 201120497873X U CN201120497873X U CN 201120497873XU CN 201120497873 U CN201120497873 U CN 201120497873U CN 202365901 U CN202365901 U CN 202365901U
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- China
- Prior art keywords
- hollow
- pedicle screw
- screw
- swell fixture
- dilatancy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a hollow expansile pedicle screw capable of carrying particles. The hollow expansile pedicle screw comprises an expansion screw, a U-shaped seat and a fixed bolt. The front end of the expansion screw is provided with a plurality of petal-shaped bodies; and the upper ends of the petal-shaped bodies are integrally connected with the side wall of the expansion screw respectively. The outer wall of the middle part of the expansion screw is provided with a plurality of clamp grooves; and through holes are formed between the clamp grooves. Titanium tubes are placed in the clamp grooves, silver bars are placed in the titanium tubes, and nuclear radioactive substance particles are adsorbed to the surfaces of the silver bars. Bone cement containing chemotherapeutic medicines is placed in an inner cavity of the expansion screw. The hollow expansile pedicle screw has the advantages that the nuclear radioactive substance particles in the hollow expansile pedicle screw are released on a treatment part, and the bone cement is exposed out of the through holes between the clamp grooves and is used for organically combining radiotherapy and chemotherapy which can act on vertebral tumor together. The screw on which nuclear radioactive substances and chemotherapeutic medicines are carried is combined with an expansion structure, so that the screw is fixed firmly, and can act on a diseased region in a large range, contribute to treatment on spine tumor, and improve a treatment effect and is simple in structure.
Description
Technical field
This utility model relates to a kind of hollow dilatancy pedicle screw of portability particle, belongs to medical orthopaedics prosthese field.
Background technology
At present, pedicle screw and pedicle of vertebral arch swell fixture reach its maturity perfect in the operation of spinal surgery, and patient's therapeutic quality is greatly improved.The U type seat that pedicle screw comprises screw and matches with hold-down bars, the top of U type seat is provided with set bolt, fixedly is comparatively reliable.The pedicle of vertebral arch swell fixture has then increased the rosette that the sidewall with screw fuses; Increased therapeutic domain, still, in use; The doctor often will arrange the scheme of radiotherapy or chemotherapy in addition; Feel pedicle screw and the pedicle of vertebral arch swell fixture part that in treatment, still has some deficits, it is poor promptly to combine with Drug therapy, can not satisfy the needs of further raising spinal column integral treatment effect.How to make surgical effect can satisfy the requirements at the higher level of doctor and patient, pedicle screw and pedicle of vertebral arch swell fixture have been proposed new problem.
The utility model content
The technical problem that this utility model will solve is to overcome above-mentioned defective, and providing a kind of can combine with Drug therapy, further improves spinal column integral treatment effect, the hollow dilatancy pedicle screw of portability particle simple in structure.
For solving the problems of the technologies described above, this utility model adopts following technical scheme:
A kind of hollow dilatancy pedicle screw of portability particle comprises swell fixture and the U type seat that fuses with said swell fixture afterbody, and said U type seat matches with hold-down bars; The top of said U type seat is provided with the set bolt with its both arms medial surface threads engaged; Said swell fixture is a hollow body, and its front end is provided with a plurality of rosettes that are uniformly distributed with, and the upper end of said rosette fuses with the sidewall of said swell fixture respectively; The outer wall of said swell fixture is provided with a plurality of draw-in grooves that are uniformly distributed with; Be equipped with the titanium pipe in the said draw-in groove, be placed with the silver rod in the said titanium pipe, the excellent surface adsorption of said silver has the particle of nuclear activity material; Also be provided with a plurality of through holes that are uniformly distributed with on the outer wall of said swell fixture, be placed with the bone cement that includes chemotherapeutics in the inner chamber of said swell fixture.
The hollow dilatancy pedicle screw of this utility model portability particle, wherein said rosette is 4, and draw-in groove is 12, and through hole is 24.
The hollow dilatancy pedicle screw of this utility model portability particle, the longitudinal length of wherein said titanium pipe is 4mm-5mm, and transverse width is 0.5mm-1mm, and wall thickness is 0.02mm-0.05mm; The longitudinal length of said silver rod is 2mm-3mm, and transverse width is 0.2mm-0.5mm.
The hollow dilatancy pedicle screw of this utility model portability particle, the longitudinal length of wherein said titanium pipe is 4.5mm, and transverse width is 0.8mm, and wall thickness is 0.05mm; The longitudinal length of said silver rod is 3mm, and transverse width is 0.5mm.
The hollow dilatancy pedicle screw of this utility model portability particle, wherein said swell fixture, U type seat and set bolt adopt titanium alloy to process.
The advantage of the hollow dilatancy pedicle screw of this utility model portability particle is: be provided with draw-in groove, titanium pipe, silver-colored rod and through hole; The excellent surface adsorption of silver has the particle of nuclear activity material; The bone cement that contains chemotherapeutics is arranged in the pedicle screw of hollow, when treatment, nuclear activity material particle is wherein discharged; Bone cement exposes through through hole, is used for associated treatment.The screw and the expansion structure of the bone cement of this carrying nuclear activity material and chemotherapeutics combine, and it is firm that screw can be fixed, and can widerly act on diseased region again, help the integration of spinal column.Through combining with Drug therapy, further improved the effect of spinal column integral treatment, structure is also very simple.
Description of drawings
Fig. 1 looks cutaway view for the master of the hollow dilatancy pedicle screw of this utility model portability particle;
Fig. 2 be among Fig. 1 B-B to D-D to view;
Fig. 3 is that A among Fig. 1 is to view;
Fig. 4 is the enlarged diagram of titanium pipe and silver-colored bar structure.
The specific embodiment
As depicted in figs. 1 and 2, the hollow dilatancy pedicle screw of this utility model portability particle, the U type seat 3 and the set bolt 4 that comprise swell fixture 1, match with hold-down bars 5.U type seat 3 fuses with swell fixture 1 afterbody.Set bolt 4 and U type seat 3 both arms medial surface threads engaged.Screw 1, U type seat 3 and set bolt 4 adopt titanium alloy to process.Swell fixture 1 is a hollow body, and its front end is provided with 4 rosettes 6 that are uniformly distributed with, and the upper end of rosette 6 fuses with the sidewall of swell fixture 1 respectively.In other embodiment of the hollow dilatancy pedicle screw of this utility model portability particle, rosette 6 also can be for more than 4.
As shown in Figure 3, the outer wall of swell fixture 1 is provided with a plurality of draw-in grooves that are uniformly distributed with.In the embodiment of the hollow dilatancy pedicle screw of this utility model portability particle, the length of pedicle screw is 4.5cm, and each rosette 6 is provided with 3 draw-in grooves, has 12 draw-in grooves.As shown in Figure 4, be equipped with titanium pipe 2 in the draw-in groove, be placed with silver rod 21 in the titanium pipe 2, excellent 21 surface adsorption of silver have the particle of nuclear activity material.The longitudinal length a1 of titanium pipe 2 is 4mm-5mm, and transverse width b1 is 0.5mm-1mm, and the wall thickness h of titanium pipe 2 is 0.02mm-0.05mm.The longitudinal length a2 of silver rod 21 is 2mm-3mm, and transverse width b2 is 0.2mm-0.5mm.
In the embodiment of the hollow dilatancy pedicle screw of this utility model portability particle, the longitudinal length a1 of titanium pipe 2 is 4.5mm, and transverse width b1 is 0.8mm, and the wall thickness h of titanium pipe 2 is 0.05mm.The longitudinal length a2 of silver rod 21 is 3mm, and transverse width b2 is 0.5mm.
The hollow dilatancy pedicle screw of this utility model portability particle also is provided with a plurality of through holes 7 that are uniformly distributed with on the outer wall of swell fixture 1, be placed with the bone cement that includes chemotherapeutics in the inner chamber, can expose when needed.In the embodiment of the hollow dilatancy pedicle screw of this utility model portability particle, each rosette 6 is provided with 6 through holes, has 24 through holes.
The method for using of the hollow dilatancy pedicle screw of this utility model portability particle is described below.
When using the hollow dilatancy pedicle screw of this utility model portability particle, with placing titanium pipe 2 in the draw-in groove of swell fixture 1, then the screw implantation is needed the vertebral body of treatment earlier; After in vertebral body, confirming good position; Rosette 6 is expanded, filling bone cement in the swell fixture 1 of hollow, hold-down bars 5 is pressed in each U type seat 3; And hold-down bars 5 is pressed down complete operation with set bolt 4, be used for associated treatment.
When treatment, the nuclear activity material particle is discharged, bone cement exposes through through hole 7, is used for associated treatment.This carrying nuclear activity material or the screw and the expansion structure that contain the bone cement of chemotherapeutics combine, and make the screw can the wider diseased region that acts on, and help the integration of spinal column.
Above-described embodiment describes the preferred implementation of this utility model; Be not that scope to this utility model limits; Under the prerequisite that does not break away from this utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of this utility model all should fall in the definite protection domain of this utility model claims.
Claims (5)
1. the hollow dilatancy pedicle screw of a portability particle; Comprise swell fixture (1) and the U type seat (3) that fuses with said swell fixture (1) afterbody; Said U type seat (3) matches with hold-down bars (5), and the top of said U type seat (3) is provided with the set bolt (4) with its both arms medial surface threads engaged, and said swell fixture (1) is a hollow body; Its front end is provided with a plurality of rosettes (6) that are uniformly distributed with; The upper end of said rosette (6) fuses with the sidewall of said swell fixture (1) respectively, and it is characterized in that: the outer wall of said swell fixture (1) is provided with a plurality of draw-in grooves that are uniformly distributed with, and is equipped with titanium pipe (2) in the said draw-in groove; Be placed with silver rod (21) in the said titanium pipe (2); Said silver rod (21) surface adsorption has the particle of nuclear activity material, also is provided with a plurality of through holes (7) that are uniformly distributed with on the outer wall of said swell fixture (1), is placed with the bone cement that includes chemotherapeutics in the inner chamber of said swell fixture (1).
2. the hollow dilatancy pedicle screw of portability particle according to claim 1 is characterized in that: wherein said rosette (6) is 4, and said draw-in groove is 12, and said through hole (7) is 24.
3. the hollow dilatancy pedicle screw of portability particle according to claim 1 and 2 is characterized in that: the longitudinal length (a1) of wherein said titanium pipe (2) is 4mm-5mm, and transverse width (b1) is 0.5mm-1mm, and wall thickness (h) is 0.02mm-0.05mm; The longitudinal length (a2) of said silver rod (21) is 2mm-3mm, and transverse width (b2) is 0.2mm-0.5mm.
4. the hollow dilatancy pedicle screw of portability particle according to claim 3 is characterized in that: the longitudinal length (a1) of wherein said titanium pipe (2) is 4.5mm, and transverse width (b1) is 0.8mm, and wall thickness (h) is 0.05mm; The longitudinal length (a2) of said silver rod (21) is 3mm, and transverse width (b2) is 0.5mm.
5. the hollow dilatancy pedicle screw of portability particle according to claim 4 is characterized in that: wherein said swell fixture (1), U type seat (3) and set bolt (4) adopt titanium alloy to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120497873XU CN202365901U (en) | 2011-12-05 | 2011-12-05 | Hollow expansile pedicle screw capable of carrying particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120497873XU CN202365901U (en) | 2011-12-05 | 2011-12-05 | Hollow expansile pedicle screw capable of carrying particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202365901U true CN202365901U (en) | 2012-08-08 |
Family
ID=46589627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120497873XU Expired - Fee Related CN202365901U (en) | 2011-12-05 | 2011-12-05 | Hollow expansile pedicle screw capable of carrying particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202365901U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107085A (en) * | 2013-04-17 | 2014-10-22 | 上海市同济医院 | Member connecting rod with accurate and slow drug-dosage releasing function |
| CN105496539A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Pedicle screw loading radioactive particles |
| CN105902308A (en) * | 2016-04-11 | 2016-08-31 | 河南省洛阳正骨医院河南省骨科医院 | Novel tibia intramedullary fastening nail |
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
| CN110478016A (en) * | 2019-07-30 | 2019-11-22 | 张家港市中医医院 | It is fixed in a kind of centrum to form device with spring-piece type cone cavity |
-
2011
- 2011-12-05 CN CN201120497873XU patent/CN202365901U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107085A (en) * | 2013-04-17 | 2014-10-22 | 上海市同济医院 | Member connecting rod with accurate and slow drug-dosage releasing function |
| CN104107085B (en) * | 2013-04-17 | 2016-03-23 | 上海市同济医院 | A kind of component connecting rod with the accurate slow-release function of drug dose |
| CN105496539A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Pedicle screw loading radioactive particles |
| CN105902308A (en) * | 2016-04-11 | 2016-08-31 | 河南省洛阳正骨医院河南省骨科医院 | Novel tibia intramedullary fastening nail |
| CN106994038A (en) * | 2017-05-23 | 2017-08-01 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind remedies fixing device for vertebral arch pedicle of vertebral column broken wall |
| CN106994038B (en) * | 2017-05-23 | 2024-03-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Be used for broken wall of backbone pedicle of vertebral arch to remedy fixing device |
| CN110478016A (en) * | 2019-07-30 | 2019-11-22 | 张家港市中医医院 | It is fixed in a kind of centrum to form device with spring-piece type cone cavity |
| CN110478016B (en) * | 2019-07-30 | 2023-12-08 | 张家港市中医医院 | Spring piece type cone cavity forming device for fixing vertebral body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20121205 |