CN201775674U - Novel skull bone flap locking inner fixer - Google Patents
Novel skull bone flap locking inner fixer Download PDFInfo
- Publication number
- CN201775674U CN201775674U CN2010200196349U CN201020019634U CN201775674U CN 201775674 U CN201775674 U CN 201775674U CN 2010200196349 U CN2010200196349 U CN 2010200196349U CN 201020019634 U CN201020019634 U CN 201020019634U CN 201775674 U CN201775674 U CN 201775674U
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- CN
- China
- Prior art keywords
- bone flap
- plane disc
- upper cover
- lower cover
- skull
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a novel skull bone flap locking inner fixer which comprises an auxiliary tool 1, a slender screw rod 2 and a ball surface arc-shaped round upper cover 3. The novel skull bone flap locking inner fixer is characterized by also comprising a plane disc lower cover 4, wherein the plane disc lower cover 4 is provided with saw teeth on the edge, also provided with a fan-shaped hole in the middle, is fixed at the lower end of the slender screw rod 2, is screwed and connected with screw threads arranged in a lug boss arranged on the slender screw rod 2, and has the same outer diameter as that of the ball surface arc-shaped round upper cover 3, and the edge of the plane disc 4 is provided with an anti-loosening displacement extending rib which can be clamped on the skull gap. Compared with the prior art, the novel skull bone flap locking inner fixer has the advantages that an inherent included angle between the plane disc lower cover and the skull with the physiological curve can form the complete surface contact with the screwing tension force for locking the slender screw rod through the elasticity of materials per se. Thereby, the fixing force is strong, the combining force with the skull bone flap is strong, the occupied space in the cranial cavity can be greatly reduced, the surgical treatment effect is improved, in addition, the product manufacture work procedures can be reduced, and the surgical operation steps can be simplified.
Description
Technical field
This utility model belongs to surgical operation skull fixator technical field, relates to a kind of novel cranial bone flap locking inner fixing device.
Background technology
At present, the cranial bone flap locking and fixing device made from titanium metal material has been obtained sure effect and has been widely used in the cerebral surgery operation both domestic and external.In the prior art before this utility model, the ZL200720031350.X patent disclosure a kind of cranial bone flap locking inner fixing device, this device is that the inventor is according to human skull's physiology curvature and the custom-designed patented technology formerly that is made of loam cake, lower cover and elongate threaded screw.This design should reach the purpose that cranial bone flap is locked theoretically.Originally be that skull and fixture have more firm locking relation, specially the outer rim of lower cover is made the zigzag projection, there is evenly distributed fan-shaped cavity at the middle part, the edge has locking displacement to stretch out rib, yet, in practice, we find because the zigzag projection of lower cover outer rim, made fixation lower cover and cranial bone flap formation be contacting of Points And lines, fixed-area is narrow and small, screw lower cover in any case, all can't be close to skull, make surgical effect not good, and the technology relative complex of making zigzag projection, and yield rate is low.
Summary of the invention
At above-mentioned prior art situation, the purpose of this utility model is to provide a kind of improved cranial bone flap locking inner fixing device, and it is more firm that cranial bone flap is locked, and is easier to operation technique, and make simple, minimizing operation.
Now the technology of the present invention solution is described below:
This utility model cranial bone flap locking inner fixing device, by accessory tool 1, elongate threaded screw 2, sphere arc circular upper cover 3, plane disc lower cover 4 constitutes, accessory tool 1 passes through two through hole relative fixed with sphere arc circular upper cover 3, and spin mutually by the screw thread that is fixed in the boss on the loam cake 3 with elongate threaded screw 2, it is characterized in that: have locking back stop slot on the sphere arc circular upper cover 3, described plane disc lower cover 4 is that an edge has sawtooth, the middle part has the plane disc of fan-shaped hole, is fixed on the lower end of elongate threaded screw 2 and identical with the external diameter of sphere arc circular upper cover 3; The plane disc edge has a locking displacement that may be stuck on the skull slit to stretch out rib.
This utility model is compared with prior art, owing to have sawtooth, the middle part has the plane disc lower cover 4 of fan-shaped hole and has elasticity that inherent angle between the cranial bone flap of physiology curvature can itself have by plane disc lower cover 4 materials and the pulling force that screws of locking elongate threaded screw 2, make and can form plane disc lower cover 4 and cranial bone flap completely face contacts, therefore, fixed great efforts, strong with the adhesion of cranial bone flap, significantly reduced intracranial mass lesion, not only improved surgical result, and reduced the production operation, simplified surgical operation step.
Description of drawings
Fig. 1: this utility model cranial bone flap locking inner fixing device sketch map
Wherein: 1 accessory tool, 2 elongate threaded screw, 3 sphere arc circular upper covers, 4 plane disc lower covers
B lower cover of the present utility model and the signal of cranial bone flap locking state
The local signal of D lower cover of the present utility model and cranial bone flap locking state
The specific embodiment
Now in conjunction with the accompanying drawings the specific embodiment of the present utility model is described further:
Referring to Fig. 1,2: this utility model cranial bone flap locking inner fixing device, by accessory tool 1, elongate threaded screw 2, sphere arc circular upper cover 3, plane disc lower cover 4 constitutes, accessory tool 1 passes through two through hole relative fixed with sphere arc circular upper cover 3, and spin mutually by the screw thread that is fixed in the boss on the loam cake 3 with elongate threaded screw 2, it is characterized in that: have locking back stop slot on the described sphere arc circular upper cover 3, described plane disc lower cover 4 is that an edge has sawtooth, the middle part has the plane disc of fan-shaped hole, is fixed on the lower end of elongate threaded screw 2 and identical with the external diameter of sphere arc circular upper cover 3; The plane disc edge has a locking displacement that may be stuck on the skull slit to stretch out rib.During use, use this device by following step:
The first step: open and take out this utility model cranial bone flap locking inner fixing device with aseptic method, check and reaffirm intact.
Second step: after shifting out the cranial bone flap of incision, by demand equidistant several novel cranial bone flap locking inner fixing devices of laying around the cranial bone flap that cuts, and guarantee that plane disc lower cover 4 is placed between cerebral dura mater and the skull, elongate threaded screw 2 keeps in the skull otch vertically, and the locking displacement at plane disc lower cover 4 edges is stretched out rib and is stuck between skull otch and the Cranial-bone-flap slit.
The 3rd step: two through holes that two axles on the accessory tool 1 insert on the sphere arc circular upper cover 3 are fixed, by cornerwise order clockwise successively balanced rotation sphere arc circular upper cover 3 of accessory tool 1, all touch skull until all sphere arc circular upper covers 3, and then all sphere arc circular upper covers 3 are firmly tightened in equilibrium successively, locking back stop slot on sphere arc circular upper cover 3 fits tightly after the skull upper surface, accessory tool 1 is firmly broken in the equilibrium of left-right symmetric direction off with the fingers and thumb again, break disconnected elongate threaded screw 2 off with the fingers and thumb until accessory tool 1 and expose loam cake, accessory tool 1 with break disconnected parts of fine long bolt 2 off with the fingers and thumb and break away from sphere arc circular upper cover 3 simultaneously.Fixing and locking is finished.
Claims (1)
1. a utility model cranial bone flap is locked inner fixing device, by accessory tool (1), elongate threaded screw (2), sphere arc circular upper cover (3), plane disc lower cover (4) constitutes, accessory tool (1) passes through two through hole relative fixed with sphere arc circular upper cover (3), and spin mutually by the screw thread that is fixed in the boss on the loam cake (3) with elongate threaded screw (2), it is characterized in that: have locking back stop slot on the sphere arc circular upper cover (3), described plane disc lower cover (4) is that an edge has sawtooth, the middle part has the plane disc of fan-shaped hole, is fixed on the lower end of elongate threaded screw (2) and identical with the external diameter of sphere arc circular upper cover (3); The plane disc edge has a locking displacement that may be stuck on the skull slit to stretch out rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200196349U CN201775674U (en) | 2010-01-05 | 2010-01-05 | Novel skull bone flap locking inner fixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200196349U CN201775674U (en) | 2010-01-05 | 2010-01-05 | Novel skull bone flap locking inner fixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201775674U true CN201775674U (en) | 2011-03-30 |
Family
ID=43788911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200196349U Expired - Fee Related CN201775674U (en) | 2010-01-05 | 2010-01-05 | Novel skull bone flap locking inner fixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201775674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200689A (en) * | 2019-07-10 | 2019-09-06 | 成都美益达医疗科技有限公司 | The fixed device of cranial bone flap and its installation tool |
-
2010
- 2010-01-05 CN CN2010200196349U patent/CN201775674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200689A (en) * | 2019-07-10 | 2019-09-06 | 成都美益达医疗科技有限公司 | The fixed device of cranial bone flap and its installation tool |
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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: 20110330 Termination date: 20120105 |