CN202724042U - Sharp tooth type biological fixation femoral stem - Google Patents
Sharp tooth type biological fixation femoral stem Download PDFInfo
- Publication number
- CN202724042U CN202724042U CN 201220014512 CN201220014512U CN202724042U CN 202724042 U CN202724042 U CN 202724042U CN 201220014512 CN201220014512 CN 201220014512 CN 201220014512 U CN201220014512 U CN 201220014512U CN 202724042 U CN202724042 U CN 202724042U
- Authority
- CN
- China
- Prior art keywords
- femoral stem
- human body
- pointed tooth
- prosthesis
- biological fixation
- 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 - Lifetime
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Classifications
-
- 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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to a sharp tooth type biological fixation femoral stem. Sharp tooth shaped protrusions are designed on the planes at the two sides of a stem body of the femoral stem. A titanium coating is sprayed on the outer surface of the proximal stem body. When the femoral stem prosthesis is implanted during a hip arthroplasty, the sharp tooth shaped protrusions are inserted into medullary cavity cancellous bones of the human body, thereby forming an irreversible fixed installation which prevents the femoral stem from sinking or rotating inside a medullary cavity of the human body and guarantees the initial stability of the prosthesis inside the human body. The titanium coating on the outer surface of the proximal stem body can effective guide the bone ingrowth to further guarantee the long-term stability of the femoral stem prosthesis inside the human body, thereby prolonging the service life of the femoral stem prosthesis.
Description
Technical field
This utility model relates to a kind of pointed tooth type biological fixation femoral stem, specifically a kind of for the biotype hip replacement surgery, more applicable biological fixation has anti-sinking and rotation preventing function simultaneously, guarantees prosthese stable type femoral bone end prosthesis initial and at a specified future date in the human body pulp cavity.
Background technology
In recent years, artificial hip joint replacing operation becomes one of the most ripe effective bone surgery.The trend demand of beneficial rejuvenation along with the hip replacement patient, also more and more higher to the requirement of biological fixation type hip prosthesis.
The biological fixation type type femoral bone end prosthesis is hip prosthesis essential in the biological hip replacement surgery, and the reasonability of its project organization directly has influence on the success or failure of joint replacement surgery and the effect of postoperative.
For guaranteeing the stability of type femoral bone end prosthesis in human body, the project organization of biotype femoral stem should adapt with the human body pulp cavity, consider simultaneously incipient stability and at a specified future date stablize of type femoral bone end prosthesis in human body, to guarantee the service life of prosthese, make the patient reduce slight illness, live up.
So need to design at present and a kind ofly can guarantee the incipient stability of femoral stem in human body, can guarantee that again stable biotype type femoral bone end prosthesis at a specified future date is to adapt to patient and doctor's requirement.
The utility model content
The purpose of this utility model provides a kind of incipient stability and the at a specified future date stable biotype femoral stem of prosthese in the human body pulp cavity that guarantee simultaneously.
For achieving the above object, this utility model is taked following technical scheme:
A kind of pointed tooth type biological fixation femoral stem, wherein it includes a handle tapering 1, handle near-end 2, pointed tooth 3 and handle far-end 4; Handle tapering 1 is connected with the acetabular bone side prosthesis, finishes the joint motions function of acetabular bone side; Handle near-end 2 inserts pulp cavity and the human body pulp cavity is press-fitted locking, pointed tooth 3 is rhizoma sparganic shape structural design, the above is a plane, the below is wedge angle, can also effectively embed by gradual compression human body pulp cavity spongy bone, firmly locking prevents rotation and the sinking of femoral stem, guarantees the initial stability of femoral stem in the human body pulp cavity; The titanium coating on handle near-end 2 surfaces is processed, and can induce bone to grow into, and guarantees that femoral stem is stable the long term in human body; Handle far-end 4 inserts the pulp cavity far-end, effectively disperses the stress of type femoral bone end prosthesis and human body pulp cavity.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: handle tapering 1 acetabular bone side prosthesis is connected.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: handle near-end 2 inserts pulp cavity, is press-fitted locking with the human body pulp cavity.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: pointed tooth 3 line number that can distribute on handle near-end 2 is 1,2,3,4 row, is used for inserting human body pulp cavity spongy bone, guarantees initial stability.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: handle far-end 4 inserts human body far-end pulp cavity, and dispersive stress blocks.
The beneficial effects of the utility model are:
When the pointed tooth design on the handle near-end of the present utility model can guarantee that near-end and human body pulp cavity are press-fitted locking, insert in the interior spongy bone of pulp cavity, prevent rotation and the sinking of type femoral bone end prosthesis in the human body pulp cavity, guarantee the initial stability of type femoral bone end prosthesis in human body; The handle proximal end face is processed for spray titanium coating, can induce bone to grow into, and guarantees the at a specified future date stability of type femoral bone end prosthesis in human body.
This utility model design concept is advanced, simple in structure, utilizes being press-fitted and embedded locking principle of near-end and pulp cavity, and the embedding design by sharp tooth has farthest guaranteed the initial stability of type femoral bone end prosthesis in human body; Utilize the biocompatibility principle of titanium coating, induce the bone between human bone and prosthese to grow into, guarantee the at a specified future date stability of type femoral bone end prosthesis in human body.So this utility model has good application and market prospect in hip replacement surgery.
Below in conjunction with the drawings and specific embodiments this utility model is described in further details, present embodiment only is this utility model preferred forms, is not to restriction of the present utility model.
Description of drawings
Fig. 1 is side direction structural representation of the present utility model;
Fig. 2 is that master of the present utility model is to structural representation;
Fig. 3 is this utility model pointed tooth Design enlargement figure.
The specific embodiment
Referring to shown in Figure 2: a kind of pointed tooth type biological fixation femoral stem, wherein it includes a handle tapering 1, handle near-end 2, pointed tooth 3 and handle far-end 4, and this handle tapering 1 can be connected with the acetabular bone side prosthesis, finishes the joint motions of acetabular bone side; Have project organization and the surface of pointed tooth 3 to process for spray titanium coating above the handle near-end 2, can realize the embedded locking that is press-fitted with the human body pulp cavity, the titanium coating can induce bone to grow into simultaneously, can be with advancing to guarantee the initial and at a specified future date stability of type femoral bone end prosthesis in human body; Handle far-end 4 inserts human body far-end pulp cavity.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: handle tapering 1 can be connected with the acetabular bone side prosthesis, realizes the acetabular bone joint motions.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: pointed tooth 3 designs above the handle near-end 2 can realize embedded locking, the initial stability of assurance prosthese of being press-fitted of near-end and human body pulp cavity.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: the titanium coating surface above the handle near-end 2 is processed, and can fully induce bone to grow into, and guarantees the stability at a specified future date of prosthese.
Above-mentioned pointed tooth type biological fixation femoral stem, wherein: handle far-end 4 implant into body far-end pulp cavitys.
Claims (3)
1. pointed tooth type biological fixation femoral stem is characterized in that: processed and had that the pointed tooth structure is press-fitted the handle near-end (2) of locking with the human body pulp cavity, pointed tooth (3) and the handle far-end (4) of rhizoma sparganic structural design insertion pulp cavity spongy bone forms by the handle tapering (1) that is used for being connected with the acetabular bone side prosthesis, surface spray titanium coating.
2. pointed tooth type biological fixation femoral stem according to claim 1 is characterized in that, pointed tooth (3) structure that handle near-end (2) distributes is above arranged line number and can be 1,2,3,4 row.
3. pointed tooth type biological fixation femoral stem according to claim 1 is characterized in that, pointed tooth (3) is rhizoma sparganic shape structural design, and the above is a plane, and the below is wedge angle, can gradual compression human body pulp cavity spongy bone and effectively embedding, firmly locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220014512 CN202724042U (en) | 2012-01-13 | 2012-01-13 | Sharp tooth type biological fixation femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220014512 CN202724042U (en) | 2012-01-13 | 2012-01-13 | Sharp tooth type biological fixation femoral stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202724042U true CN202724042U (en) | 2013-02-13 |
Family
ID=47649802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220014512 Expired - Lifetime CN202724042U (en) | 2012-01-13 | 2012-01-13 | Sharp tooth type biological fixation femoral stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202724042U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104825252A (en) * | 2015-05-26 | 2015-08-12 | 北京爱康宜诚医疗器材股份有限公司 | Femoral stem |
| CN104905896A (en) * | 2015-06-29 | 2015-09-16 | 北京贝思达生物技术有限公司 | Bone-cement type hip joint |
| CN107485468A (en) * | 2017-08-29 | 2017-12-19 | 南京市溧水中山铸造有限公司 | A kind of joint prosthesis casting |
| CN111529136A (en) * | 2020-04-26 | 2020-08-14 | 北京力达康科技有限公司 | Femoral head resurfacing prosthesis |
-
2012
- 2012-01-13 CN CN 201220014512 patent/CN202724042U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104825252A (en) * | 2015-05-26 | 2015-08-12 | 北京爱康宜诚医疗器材股份有限公司 | Femoral stem |
| CN104825252B (en) * | 2015-05-26 | 2018-03-23 | 北京爱康宜诚医疗器材股份有限公司 | Femoral stem |
| CN104905896A (en) * | 2015-06-29 | 2015-09-16 | 北京贝思达生物技术有限公司 | Bone-cement type hip joint |
| CN107485468A (en) * | 2017-08-29 | 2017-12-19 | 南京市溧水中山铸造有限公司 | A kind of joint prosthesis casting |
| CN111529136A (en) * | 2020-04-26 | 2020-08-14 | 北京力达康科技有限公司 | Femoral head resurfacing prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |