CN2576200Y - Preset artificial hip-joint thigh-bone handle - Google Patents
Preset artificial hip-joint thigh-bone handle Download PDFInfo
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- CN2576200Y CN2576200Y CN 02279259 CN02279259U CN2576200Y CN 2576200 Y CN2576200 Y CN 2576200Y CN 02279259 CN02279259 CN 02279259 CN 02279259 U CN02279259 U CN 02279259U CN 2576200 Y CN2576200 Y CN 2576200Y
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- neck
- section
- joint
- joint handle
- utility
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Abstract
The utility model relates to an artificial hip joint, which particularly relates to a preset artificial hip-joint thigh-bone handle, which mainly composes a head and neck section, a collar, a close section of a joint stalk, and a far section of a joint stalk. The utility model is characterized in that according to the shape of a thigh-bone marrow cavity, the close section of a joint stalk and the far section of a joint stalk are designed, and the collar is in a movable type. The utility model has adaptive matching functions. The utility model has the advantages that workability is favorable; relative to the existing preset thigh-bone handle, production cost of the utility model can be obviously reduced; installation and operation are convenient; abnormal possibility generated in the operation can be reduced; postoperative early fixing effects are favorable, and late loose possibility of the femoral bone stalk can be reduced.
Description
This utility model relates to a kind of artificial hip joint, particularly a kind of customization type artificial hip joint femoral shaft.
Replacement of total hip is a kind of effective ways that recover hip joint function, but in clinical femoral stem to become flexible late period be a problem that does not obtain fine solution always.Clinical and experimentation shows: after femoral stem is implanted, if the power that passes to femur by femoral stem can be simulated the stressed distribution of physiology, will help early stage fixing, thereby it is loosening to reduce late period.Therefore, the customization type femoral stem with the neck neck should obtain optimum effect in theory, but there are two subject matters in the femoral stem of existing this structure in application, and the one, the femoral stem and the pulp cavity that mate femoral bone cavitas medullaris are fully interfered; The 2nd, the neck neck is difficult to and femur osteotomy surface coupling.These two problems cause also not exclusively being better than with the effect of the customization type femoral stem of neck neck the femoral stem of other structure.
The purpose of this utility model is to design a kind of customization type artificial hip joint femoral shaft, to overcome the defective of prior art, realizes the simulation to the stressed distribution of physiology, improves clinical application effect.
Customization type artificial hip joint femoral shaft of the present utility model, comprise far away section of head and neck section, neck neck, the nearly section of joint handle and joint handle, it is characterized in that: nearly section of joint handle and joint handle section far away be according to the femur cavitas medullaris shape design, and neck to lead be movable, have the Adaptive matching function.Be described in detail implementation procedure of the present utility model below in conjunction with accompanying drawing:
This utility model as shown in Figure 1.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 looks sketch map for movable neck feudal lord of the present utility model;
Fig. 3 is a specialized nut sketch map of the present utility model;
Fig. 4 is the nearly section of a joint handle of the present utility model schematic cross-section;
Fig. 5 is a joint handle of the present utility model section far away schematic cross-section.
Wherein: 1. head and neck section 2. specialized nuts 3. movable necks are led the nearly section of 4. joint handles 5. joint handles section far away 6. planes 7. blind holes, 8. key-way shape through holes, 9. spherical concave surfaces
Customization type artificial hip joint femoral shaft of the present utility model comprises head and neck section 1, neck neck 2, the nearly section 4 of joint handle and joint handle section 5 far away, it is characterized in that: nearly section 4 of joint handle and joint handle section far away 5 designs according to femur cavitas medullaris shape, the nearly section 4 of joint handle is the part matched, the back side and side are the plane, and other parts are not for there being the coupling of interference pulp cavity curved surface; Joint handle section 5 far away is one cylindrical, and symmetry has two planes 6 on cylinder, and the end of joint handle section 5 far away is the radius hemispherical dome structure identical with cylinder; The arc transition face is smooth is connected for the nearly section 4 of joint handle and 5 employing of joint handle section far away etc., and body diameter and two interplanar distances are definite according to the pulp cavity shape.The neck neck is convenient to be mated with the femur osteotomy surface in order to make, neck neck of the present utility model is movable neck neck 3, the top centre of movable neck neck 3 is a spherical concave surface 9, be provided with a key-way shape through hole 8 in the centre, leading 3 supporting specialized nut 2 one ends with movable neck is spherical structure, and spherical diameter is identical with spherical concave surface 9 on the movable neck neck 3, is evenly distributed with four columniform blind holes 7 on the end face of the other end of specialized nut 2, is mainly used to swivel nut and uses.
Operation principle of the present utility model and using method are: by rationally determining the coupling section and adopting movable Adaptive matching neck neck, make femoral stem be delivered to the power of femur near the stressed distribution of physiology.Using method is: after adopting conventional method that femoral stem is implanted pulp cavity, the key-way shape through hole of movable neck neck is passed the head and neck section, again specialized nut is screwed on the screw thread below the head and neck section, when the neck neck is installed, by neck neck and nut cooperating at the sphere place, make neck neck and femur osteotomy surface Adaptive matching, will guarantee that when swivel nut femoral stem is fixed well.
The utility model has the advantage of: machinability is good, with respect to existing customization Type femoral stem production cost can obviously reduce; Fitting operation is convenient, has reduced Zhong the art Existing unusual possibility; Postoperative Zao phase fixed effect is good, and it is loosening late period to have reduced femoral stem Possibility.
Claims (2)
1, a kind of customization type artificial hip joint femoral shaft comprises far away section of head and neck section, neck neck, the nearly section of joint handle and joint handle, and it is characterized in that: nearly section of joint handle (4) and joint handle section (5) far away design according to femur cavitas medullaris shape; The nearly section of joint handle (4) is the part matched, and the back side and side are the plane, and other parts are not for there being the coupling of interference pulp cavity curved surface; Joint handle section far away (5) is one cylindrical, is arranged with two planes (6) on cylinder, and the end of joint handle section far away (5) is the radius hemispherical dome structure identical with cylinder; The arc transition face is smooth is connected in nearly section of joint handle (4) and joint handle section (5) employings far away etc.
2, customization type artificial hip joint femoral shaft according to claim 1 is characterized in that: the neck neck is movable neck neck (3), and the top centre of movable neck neck (3) is a spherical concave surface (9), is provided with a key-way shape through hole (8) in the centre; Specialized nut (2) one ends are spherical structure, and spherical diameter leads the spherical concave surface (9) on (3) identical with movable neck, are evenly equipped with four blind cylindrical hole (7) on the end face of the other end of specialized nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279259 CN2576200Y (en) | 2002-09-16 | 2002-09-16 | Preset artificial hip-joint thigh-bone handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279259 CN2576200Y (en) | 2002-09-16 | 2002-09-16 | Preset artificial hip-joint thigh-bone handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2576200Y true CN2576200Y (en) | 2003-10-01 |
Family
ID=33742369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279259 Expired - Fee Related CN2576200Y (en) | 2002-09-16 | 2002-09-16 | Preset artificial hip-joint thigh-bone handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2576200Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247226A (en) * | 2011-06-03 | 2011-11-23 | 祝桂涛 | Device for preventing dislocation of artificial femoral head and using method thereof |
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
-
2002
- 2002-09-16 CN CN 02279259 patent/CN2576200Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247226A (en) * | 2011-06-03 | 2011-11-23 | 祝桂涛 | Device for preventing dislocation of artificial femoral head and using method thereof |
| WO2012163228A1 (en) * | 2011-06-03 | 2012-12-06 | Zhu Guitao | Apparatus for preventing artificial femur head dislocation and method for using same |
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
| CN107361881B (en) * | 2017-08-07 | 2023-11-24 | 胡永成 | Femur far-end prosthesis capable of increasing bone preservation quantity and adopting bone trabecular structure |
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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 |