CN2642256Y - Springing for fixing instrument - Google Patents
Springing for fixing instrument Download PDFInfo
- Publication number
- CN2642256Y CN2642256Y CN 03246267 CN03246267U CN2642256Y CN 2642256 Y CN2642256 Y CN 2642256Y CN 03246267 CN03246267 CN 03246267 CN 03246267 U CN03246267 U CN 03246267U CN 2642256 Y CN2642256 Y CN 2642256Y
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- China
- Prior art keywords
- cylinder barrel
- flexible
- sliding axle
- fixed apparatus
- elastic
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Abstract
An appliance fixing flexible device for the orthopedic clinical application mainly consists of a cylinder, a sliding shaft arranged on the upper part of the inside of the cylinder, and a lower flexible element. The cylinder includes a cylinder body and an upper cover; the inner diameter of the upper part of the cylinder body is provided with a step; the inner diameter of the matching place of the sliding shaft is larger than the inner diameter of the lower place where the flexible element is arranged; a jiggling gap is arranged between the step and the bottom of the matching place of the sliding shaft. The flexible element can be spring type or flexible capsule type. The flexible element can match the internal fixing appliance and external fixing frame of any shape and structure to form a flexible internal fixing appliance and a flexible external fixing frame. When the fractured lime is bearing the axial pressure, the flexible internal fixing appliance and a flexible external fixing frame can jiggle in the axial direction, so as to make the fractured end jiggle to produce a counterpart force and stimulate the production of the bone scab at the fractured end; thus the utility model avoids the osteoporosis resulted from the stress shielding, speeds up the fracture healing, enhances the strength of the healed bone, and effectively prevents the delayed healing or non-healing of the fracture.
Description
Affiliated technical field
This utility model relates to the fixed apparatus elastic device of orthopaedics clinical practice, is applicable to other external fixer of internal fixation of spine apparatus or orthopaedics.
Background technology
When orthopaedics therapy spinal fracture and extremity fracture, often need to use internal fixation device and external fixer, existing various internal fixation device and external fixer, though shape and structure is different, but all can't carry out fine motion regulates, lack the flexible adjustment device, easily produce stress shielding during application and form osteoporosis, refracture takes place behind the removal fixture easily.Because fracture end lacks fine motion, no Pressure stimulation, callus generates slow relatively, and growing amount is less, and speed of fracture union is slow.
Summary of the invention
The purpose of this utility model is to remedy the deficiency of current use internal fixation device and the existence of external fixer treatment fracture, improves structural design, adopts elastic element, both can effectively prevent to produce stress shielding, avoid forming osteoporosis, can stimulate the fracture end callus to generate accelerating bone healing again.Therefore a kind of fixed apparatus elastic device with fine motion regulatory function is provided,
The technical scheme of fixed apparatus elastic device is: its composition mainly contains the sliding axle and the elastic element of cylinder barrel and cylinder barrel inside.Cylinder barrel contains cylindrical shell and loam cake, and cylindrical shell top internal diameter is established step, places the internal diameter at elastic element place with sliding axle cooperation place internal diameter greater than the bottom, and establishes the fine motion gap between step and the bottom surface, sliding axle cooperation place.
The elastic element of cylinder barrel inside has multi-form.
Elastic element generally adopts spring or elastic capsule.Spring or internal-filling liquid press the elastic capsule of oil all to place between sliding axle and the cylinder barrel bottom surface.
The cylinder barrel loam cake can adopt screw lid to be threaded with the cylindrical shell upper end; Also can adopt flat cover to be connected with cylindrical shell upper end screw.
The sliding axle upper end can be made into the difformity structure with cylindrical shell bottom surface axially outer end, and corresponding coupling with various fixed apparatus connects.
Utilize the fixing fracture of internal fixation device or external fixer and this elastic device, fractured bones is under axial compressive force, by the hold-down screw on the skeleton and internal fixation device or external fixer upper and lower side, impel sliding axle to move down pressurization, compression spring or gum elastic capsule, but owing to the sliding axle fine motion moves down, drive thereupon and control fractured bones also fine motion move down, be subjected to the pressure effect of fracture end, can stimulate the fracture end callus to generate, avoid fracture end to produce stress shielding.
This elastic device can mate the internal fixation device (being mainly used in the internal fixation of spine apparatus) and the external fixer of any difformity structure, constitutes flexible spinal internal fixation device and elasticity external fixer.When the vertebral body of fracture or limbs when being subjected to axial compressive force, flexible spinal internal fixation device and elasticity external fixer have axial fine motion, thereby make the fracture end fine motion and produce an interaction force, stimulate the fracture end callus to generate, avoided stress shielding to form osteoporosis, but accelerating bone healing speed strengthens the intensity of healing sclerotin, effectively prevents the generation of fracture delayed healing or disunion.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is a fixed apparatus elastic device I type structural representation
Fig. 2 is a fixed apparatus elastic device II type structural representation
Fig. 3 is this device loam cake and cylinder barrel screw connection diagram
The specific embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing
The fixed apparatus elastic device mainly is made up of the sliding axle and the elastic element of cylinder barrel and cylinder barrel inside.Cylinder barrel contains cylindrical shell (1) and loam cake (2), and cylindrical shell (1) top internal diameter is established step, places the internal diameter at elastic element place with sliding axle (3) cooperation place internal diameter greater than the bottom, and establishes the fine motion gap between step and sliding axle (3) bottom surface, cooperation place.
The elastic element of cylinder barrel inside has multi-form.
As shown in Figure 1 and Figure 2, elastic element generally adopts spring (4) or elastic capsule (5).Spring (4) or internal-filling liquid press the elastic capsule (5) of oil all to place between sliding axle (3) and cylinder barrel (1) bottom surface.It is oval spherical playing shape rubber bag tank (5), and the sliding axle of Pei Heing (3), cylinder barrel (1) bottom surface contact surface also are ellipsoidal surface with it.
Cylinder barrel loam cake (2) can adopt screw lid to be threaded (the two internal and external threads is connected interchangeable configuration) with cylindrical shell (1) upper end; Also can adopt flat cover (6) to add screw in addition with cylindrical shell (1) upper end as shown in Figure 3 is connected.
Sliding axle (3) upper end can be made into the difformity structure with cylindrical shell (1) bottom surface axially outer end, and corresponding coupling with various fixed apparatus connects.
Claims (6)
1. the fixed apparatus elastic device of an orthopaedics clinical practice is characterized in that it mainly is made up of sliding axle of putting on cylinder barrel and the cylinder barrel inside and lower end elastic element.
2. fixed apparatus elastic device according to claim 1 is characterized in that cylinder barrel contains cylindrical shell and loam cake, and cylindrical shell top internal diameter is established step, with sliding axle cooperation place internal diameter greater than the bottom internal diameter, and establish the fine motion gap between step and the bottom surface, sliding axle cooperation place.
3. fixed apparatus elastic device according to claim 1, the elastic element that it is characterized in that cylinder barrel inside is a spring, spring places between sliding axle and the cylinder barrel bottom surface.
4. fixed apparatus elastic device according to claim 1, the elastic element that it is characterized in that cylinder barrel inside is the gum elastic capsule that internal-filling liquid is pressed oil, the gum elastic capsule places between sliding axle and the cylinder barrel bottom surface, the gum elastic capsule is oval spherical, and slip axial plane of Pei Heing and cylinder barrel bottom surface also are oval ball contact surface with it.
5. fixed apparatus elastic device according to claim 1 is characterized in that the cylinder barrel loam cake is screw lid or flat cover, is threaded with cylindrical shell upper end respectively or is connected with screw in addition.
6. fixed apparatus elastic device according to claim 1 is characterized in that the sliding axle upper end can be made into the difformity structure with cylindrical shell bottom surface axially outer end, and corresponding coupling with various fixed apparatus connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246267 CN2642256Y (en) | 2003-07-31 | 2003-07-31 | Springing for fixing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246267 CN2642256Y (en) | 2003-07-31 | 2003-07-31 | Springing for fixing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2642256Y true CN2642256Y (en) | 2004-09-22 |
Family
ID=34292602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03246267 Expired - Fee Related CN2642256Y (en) | 2003-07-31 | 2003-07-31 | Springing for fixing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2642256Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366559B2 (en) | 2010-06-23 | 2013-02-05 | Lenkbar, Llc | Cannulated flexible drive shaft |
-
2003
- 2003-07-31 CN CN 03246267 patent/CN2642256Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8366559B2 (en) | 2010-06-23 | 2013-02-05 | Lenkbar, Llc | Cannulated flexible drive shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |