CN2915056Y - An artificial hip joint stem prosthesis - Google Patents
An artificial hip joint stem prosthesis Download PDFInfo
- Publication number
- CN2915056Y CN2915056Y CN 200620057963 CN200620057963U CN2915056Y CN 2915056 Y CN2915056 Y CN 2915056Y CN 200620057963 CN200620057963 CN 200620057963 CN 200620057963 U CN200620057963 U CN 200620057963U CN 2915056 Y CN2915056 Y CN 2915056Y
- Authority
- CN
- China
- Prior art keywords
- wedge
- hip joint
- clamping screw
- artificial hip
- prosthese
- Prior art date
- 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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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
The utility model discloses an artificial hip-joint stalk prosthesis which is convenient to install, firmly fixed with a reasonable distribution of the stress and can effectively prevent problems such as loosening and sinking. The utility model comprises a wedge-shape body with a thread groove in the central and a locking bolt with a male screw. The locking bolt is arranged in the wedge-shape body in the same direction of the wedge-shape body with the out screw thread exposed out of the screw groove. The utility does small injury to the body when being implanted with a more homogeneous distributed stress and obviously decreases the possibility of the sinking or loosening of the prosthesis when being forced.
Description
Technical field
This utility model relates to medical apparatus and instruments artificial joint field, relates in particular to a kind of novel artificial hip joint handle prosthese.
Background technology
At present, in the joint surgery field, the artificial hip joint replacing operation is one of common bone surgery, and artificial hip joint replacing is divided into two kinds usually, i.e. whole coxa substitution and half hip replacement.So artificial joint also is divided into two kinds of full hip-joint and partial hip joints.Whole coxa substitution is meant that femoral head and acetabular bone replace simultaneously, and half hip replacement is meant simple femoral head replacement.Clinically more advocate with total hip replacement, application mode is an artificial joint based on the embedded type joint also.Artificial full-hip joint generally is made up of hip joint stalk prosthese, hip joint bulb and hip cotyle, the technology of hip joint bulb and hip cotyle is relatively ripe, they are divided into two kinds on rolling friction type and sliding friction type, these two a lot of producers of ingredient all are made into the available use of standard component, artificial hip joint handle prosthese mainly is divided into bone-cement type and none-cement type two classes with regard to its fixed form.It is all many to produce the wherein a part of producer of full hip-joint, partial hip joint or production now, the product of producing from specialized factories such as domestic Beijing, Tianjin, Jiangsu is arranged, imported product from states such as the U.S., Britain, Germany, France is also arranged, but still there is not a kind of comparatively ideal artificial hip joint so far, one of them major reason is exactly that artificial hip joint handle prosthese is fixing firm inadequately, the operation back occurs loosening easily or sinks, thereby influences the service life of whole hip joint.
Existing artificial hip joint handle prosthese mainly contains two kinds, and a kind of is surperficial threadless wedge, and a kind of is surperficial screwed cone.When surperficial threadless wedge-like prosthese is inserted skeleton, very little to the injury of sclerotin, but shortcomings such as existence is loosening easily, sinking.The screwed coniform prosthese in surface efficiently solves shortcomings such as loosening, sinking, but screwed prosthese can produce very big frictional force in rotating process, exists again the big shortcoming of sclerotin injury.
Chinese patent publication number CN02283534.2, on December 17th, open day, the name of innovation and creation is called and keeps the anti-anti-sinking artificial hip joint that revolves of neck of femur, this application case discloses the anti-anti-sinking artificial hip joint that revolves of a kind of reservation neck of femur, it is made up of screw thread prosthese handle, prosthese neck, the first-class part of prosthese, screw thread prosthese handle is conical structure, in screw thread prosthese handle upper end, is provided with lockhole; The stage casing is provided with wide and dark screw thread, at the position, stage casing, is provided with one and is 130 ° rectangle nail road with screw thread prosthese arbor line; The hypomere of screw thread prosthese handle is cylindric, is provided with axial bone groove at its end.This application case is inserted the prosthese neck in the rectangle nail road of screw thread prosthese handle, and fixes with screw, prevents that effectively the prosthese neck from gliding.In prosthese handle stage casing wide and dark screw thread is set and has solved shortcomings such as prosthetic loosening, sinking, but have the following disadvantages, because wide and dark screw thread is arranged, when the prosthese handle is installed in the skeleton, will inevitably produce very big frictional force, can cause no small injury sclerotin.
The utility model content
This utility model has overcome shortcoming of the prior art, provides a kind of easy for installation, fixation, stress distribution reasonable, can effectively prevent the artificial hip joint handle prosthese of problems such as loosening and sinking again.
In order to solve the problems of the technologies described above, be achieved through the following technical solutions:
A kind of artificial hip joint handle prosthese, comprise a wedge, it is characterized in that, described wedge middle body has a thread groove, described prosthese comprises that also one has externally threaded clamping screw, described clamping screw places in the wedge along the thread groove of described wedge, and the external screw thread of described clamping screw is exposed to outside the thread groove.
On the described clamping screw caudad flank breach is arranged.
Described clamping screw end thread face becomes the plane of an angle of 90 degrees with bolt shaft.
The centrage of described cylindrical centrage and described thread groove becomes 40-42 degree angle.
The major diameter of external thread of described clamping screw diminishes from top to bottom gradually, becomes taper.
Described clamping screw external thread diameter is greater than the thickness of described wedge.
There is a locking post on the top, axle center of described clamping screw.
The full place of described wedge is to being projected with a cylinder.
Compared with prior art, this utility model provides a kind of artificial hip joint handle prosthese that can effectively prevent problems such as loosening and sinking.Clamping screw cooperates formation artificial hip joint handle prosthese with thread groove, the thickness of wedge is less than the externally threaded diameter of clamping screw, and the clamping screw screw thread screws in the sclerotin simultaneously in the process of screwing when clamping screw cooperates with thread groove; Thin so on the one hand wedge is less to the sclerotin injury of human body, has increased the contact area of artificial hip joint handle prosthese and human body sclerotin on the other hand again.More stress distribution point can be arranged when artificial femoral articulation's prosthese is stressed, and promptly stress distribution is more even, has obviously reduced stressed sinking of prosthese or loosening probability.Artificial femoral articulation's prosthese cervical region cylinder is smooth surface processing can convenience artificial femoral articulation's bulb installation and reduces friction simultaneously, in addition remaining surface all adopts special technique to handle, and can combine closely with sclerotin after making artificial hip joint handle prosthese implant into body.Effects such as this prosthese has better stress distribution, better prevents to become flexible, sinking, implant simultaneously simple with unloading process, wound is little.
Description of drawings
Fig. 1 is an artificial hip joint handle borrowed structure sketch map;
Fig. 2 is the wedge structural representation of artificial hip joint handle prosthese;
Fig. 3 is the upward view of Fig. 2;
Fig. 4 is the clamping screw structural representation of artificial hip joint handle prosthese;
Fig. 5 is the A-A cutaway view of Fig. 4.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is elaborated.
See also Fig. 1 to Fig. 5, disclosed a kind of artificial hip joint handle prosthese among the figure, comprise a wedge 1 and a clamping screw 2.The full place of wedge 1 is to being projected with a cylinder 3, and middle body has a thread groove 4.The cylinder 3 of wedge 1 cervical region be connected the bulb (not shown) and be connected, add hip cotyle (not shown) mutual group and become artificial full-hip joint.
As Fig. 4, shown in Figure 5, clamping screw 2 comprises an axle center 21, axle center 21 vertical locking posts 23 and surrounds the external screw thread 22 in axle center 21 that external screw thread 22 external diameters of clamping screw 2 diminish into taper from top to bottom gradually; The end thread face 6 of clamping screw 2 becomes an angle of 90 degrees with bolt shaft, on the clamping screw 2 caudad flanks tailing screw flight breach 5 is arranged, in use be convenient to tighten clamping screw 2,4 one-tenth self-locking states of thread groove of clamping screw 2 end thread faces 6 and wedge 1 when interlock puts in place with the instrument interlock.Locking post 23 is a hexagon prism, is used for being connected and installed or extracting tool, makes things convenient for the installation and removal of prosthese.
Clamping screw 2 external screw threads 22 diameters are greater than the thickness of wedge 1, when clamping screw 2 with after the thread groove 4 of wedge 1 cooperates, the part of clamping screw 2 external screw threads 22 is exposed to outside the thread groove 4.When clamping screw 2 cooperates in the process of screwing with thread groove 4, the external screw thread 22 of clamping screw 2 screws in the sclerotin simultaneously.
The centrage of the centrage of cylinder 3 and thread groove 4 becomes 41 degree angles, and Stress Transfer that can be reasonably that the cervical region cylinder is suffered also reasonably distributes to whole hip prosthesis, has avoided the generation of stress concentration so very effectively.The configuration design of the wedge capital shape of coincideing, and whole wedge 1 each part transition slyness makes in operation and can import smoothly; Wedge 1 Thickness Design is thin, and surface employing special handling, can reduce the damage to sclerotin like this, can combine closely with wedge again behind the bone tissue growth.The external screw thread 22 of clamping screw 2 designs from top to bottom diameter from large to small, and this vary in diameter is similar to capital profile variation, can avoid like this causing femur to break in the operation.
During implanting prosthetic, earlier slick and sly wedge 1 is imported in the skeleton, wedge 1 each part transition slyness can make things convenient for smoothly and implant.After wedge 1 is had good positioning, the thread groove 4 of clamping screw 2 along wedge 1 screwed in, this moment, wedge 1 was fixed again, and the external screw thread 22 of clamping screw 2 screws in the sclerotin.When locking puts in place, 4 one-tenth self-locking states of thread groove of clamping screw 2 end thread faces 6 and wedge 1.Because in implantation process, what contact with sclerotin needs only the part that external screw thread 22 exposes, very little to the damage of sclerotin.Simultaneously, exposing of external screw thread 22 increased the contact area of artificial hip joint handle prosthese and sclerotin, and stress distribution is more even when making artificial femoral articulation's prosthese stressed, obviously reduces stressed sinking of artificial femoral articulation's prosthese or loosening probability.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only.As, the angle of the cylindrical centrage of wedge cervical region and the centrage of thread groove can be the 40-42 degree.Any modification or partial replacement that does not break away from this utility model spirit and scope all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1, a kind of artificial hip joint handle prosthese, comprise a wedge, it is characterized in that, described wedge middle body has a thread groove, described prosthese comprises that also one has externally threaded clamping screw, described clamping screw places in the wedge along the thread groove of described wedge, and the external screw thread of described clamping screw is exposed to outside the thread groove.
2, artificial hip joint handle prosthese according to claim 1 is characterized in that, on the described clamping screw caudad flank breach is arranged.
3, artificial hip joint handle prosthese according to claim 1 is characterized in that, described clamping screw end thread face becomes the plane of an angle of 90 degrees with bolt shaft.
4, according to claim 1 or 2 or 3 described artificial hip joint handle prostheses, it is characterized in that the full place of described wedge is to being projected with a cylinder, the centrage of described cylindrical centrage and described thread groove becomes 40-42 degree angle.
5, according to claim 1 or 2 or 3 described artificial hip joint handle prostheses, it is characterized in that the major diameter of external thread of described clamping screw diminishes from top to bottom gradually, become taper.
6, according to claim 1 or 2 or 3 described artificial hip joint handle prostheses, it is characterized in that described clamping screw external thread diameter is greater than the thickness of described wedge.
According to claim 1 or 2 or 3 described artificial hip joint handle prostheses, it is characterized in that 7, there is a locking post on the top, axle center of described clamping screw.
8, according to claim 1 or 2 or 3 described artificial hip joint handle prostheses, it is characterized in that the full place of described wedge is to being projected with a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620057963 CN2915056Y (en) | 2006-04-17 | 2006-04-17 | An artificial hip joint stem prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620057963 CN2915056Y (en) | 2006-04-17 | 2006-04-17 | An artificial hip joint stem prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2915056Y true CN2915056Y (en) | 2007-06-27 |
Family
ID=38185960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620057963 Expired - Fee Related CN2915056Y (en) | 2006-04-17 | 2006-04-17 | An artificial hip joint stem prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2915056Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264800A (en) * | 2015-06-10 | 2017-01-04 | 张长青 | Secondary pressurized femoral prosthesis |
-
2006
- 2006-04-17 CN CN 200620057963 patent/CN2915056Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264800A (en) * | 2015-06-10 | 2017-01-04 | 张长青 | Secondary pressurized femoral prosthesis |
| CN106264800B (en) * | 2015-06-10 | 2018-06-29 | 张长青 | Secondary pressurized femoral prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUNIYA MEDICAL EQUIPMENT CO., LTD., ZHUHAI Free format text: FORMER OWNER: ZHUHAI FUNIA MEDICAL POLYMERS PRODUCTS CO., LTD. Effective date: 20120111 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 519060 ZHUHAI, GUANGDONG PROVINCE TO: 519015 ZHUHAI, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120111 Address after: Xiangzhou District of Guangdong city in Zhuhai province 519015 tangjiewan Road innovative science and Technology Park in California coast Patentee after: Zhuhai Funiya Medical Equipment Co., Ltd. Address before: No. 18 California Science Park 519060 Guangdong province Zhuhai Tangjiawan Harbour Road Science and technology science and Technology Innovation Coast Road Patentee before: Zhuhai Fornia Medical Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20140417 |