CN203591360U - Implantation femoral head - Google Patents
Implantation femoral head Download PDFInfo
- Publication number
- CN203591360U CN203591360U CN201320363081.2U CN201320363081U CN203591360U CN 203591360 U CN203591360 U CN 203591360U CN 201320363081 U CN201320363081 U CN 201320363081U CN 203591360 U CN203591360 U CN 203591360U
- Authority
- CN
- China
- Prior art keywords
- hole
- femoral head
- joint neck
- head
- handle body
- 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
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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
- 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 discloses an implantation femoral head, which comprises a handle body, a joint neck and a femoral head, wherein the joint neck is installed inside a groove hole on the upper part of the handle body; the head of the joint neck is fixed in a hole on the lower part of the femoral head; the groove hole is a big-upper and small-bottom cylinder stepped hole; the inner part of the joint neck is equipped with a rod of big-ends of two and small-center small cylinder stepped through hole. An inner chamber of the groove hole is fitted tightly with a taper sleeve. The middle part of the joint neck is carried with two lugs. A longitudinal groove with two latching lugs is opened downwardly on an upper end surface of the taper sleeve. A protective cover was inserted in the head part of the joint neck. A screw is inserted in the stepped through hole. An upper part of the screw is snapped onto a first step of the stepped through hole. A lower part of the screw is cooperated with a lower part thread of a taper sleeve inner chamber. The screw is sleeved with a spring on the position between a second step of the stepped through hole and the base part of the taper sleeve inner chamber. A surface of the handle body is spliced with a plurality of long strip-shaped porous tantalum projection in parallel distribution. The implantation femoral head has the advantages that the retention is more stable, the biocompatibility is improved and the use performance is advanced.
Description
Technical field
This utility model relates to a kind of implanting femoral head, relates in particular to the implanting femoral head that a kind of maintenance is stable, biocompatibility is high, serviceability is good.
Background technology
Implanting femoral head is mainly used in the conventional artificial replacement joint such as femur head necrosis, fracture of femoral neck.The original femoral head of human body has one deck periosteum between femoral head and acetabular bone, its role is to increase elasticity, reduces wearing and tearing.Implanting the acetabular component that after implanting femoral head, the acetabular bone of sclerotin was processed into by ultra high molecular polyethylene originally replaces.The femoral head prosthesis that the original femoral head of human body is become by cobalt-based materials processing replaces, and has so just formed metal femoral head and supra polymer acetabular bone and has interacted.Existing implanting femoral head is made up of caput femoris handle and femoral head, and caput femoris handle is made up of handle body and joint neck one, and the other end of joint neck is installed femoral head.The capital handle body of existing implanting and joint neck are fixed together, and make implanting femoral head not have the effect of periosteum, also just do not strengthen the effect of elasticity and wearability, and serviceability is bad.And also there is the shortcoming of maintenance shakiness, biocompatibility deficiency in traditional implanting femoral head.
Utility model content
In view of the foregoing defects the prior art has, this utility model aims to provide the implanting femoral head that a kind of maintenance is stable, biocompatibility is high, serviceability is good.
To achieve these goals, this utility model is by the following technical solutions: implanting femoral head comprises handle body, joint neck and femoral head, described joint neck is installed in the slotted eye on described handle body top, and the head of described joint neck is fixed in the hole of described femoral head bottom, described slotted eye is up big and down small cylindric shoulder hole, described joint neck is the bar that inside is provided with the cylindric ladder hole of big at both ends and small in middle, described slotted eye inner chamber tight fit has tapered sleeve, neck middle part, described joint is with two lugs, described tapered sleeve upper surface offers two elongated slots that fix described lug downwards, described joint neck and head is plugged with over cap, in described ladder hole, be plugged with screw rod, described screw rod top is stuck in above the first step of described ladder hole, match with the screw thread of described tapered sleeve inner chamber bottom in described screw rod bottom, described screw rod overlaps and has spring on the position between second step and the described tapered sleeve intracavity bottom of described ladder hole, described handle surface is bonded with the porous tantalum projection of the strip of multiple horizontal distribution.
As the improvement to the technical program, described porous tantalum convex cross section is triangle.
As the improvement to the technical program, in described slotted eye, described tapered sleeve top is provided with sealing ring.
Compared with the prior art, this utility model, owing to having adopted technique scheme, makes implanting femoral head maintenance more stable, has improved the capital biocompatibility of implanting, has promoted the capital serviceability of implanting.
Accompanying drawing explanation
Fig. 1 is the front view of this utility model embodiment.
Fig. 2 is the right view of this utility model embodiment.
In figure: 1 handle body, 2 joint necks, 3 femorals head, 4 tapered sleeves, 5 over caps, 6 screw rods, 7 elastic devices, 8 sealing rings, 11 slotted eyes, 12 porous tantalum projections, 21 ladder holes, 22 lugs, 41 elongated slots, 42 screw threads, 211 first steps, 212 second steps.
The specific embodiment
Below by embodiment, this utility model is specifically described; be necessary to be pointed out that at this following examples are only for being further detailed this utility model; can not be interpreted as the restriction to this utility model protection domain, those skilled in the art can make some nonessential improvement and adjustment to this utility model according to foregoing.
Embodiment: a kind of implanting femoral head, as depicted in figs. 1 and 2, implanting femoral head comprises handle body 1, joint neck 2 and femoral head 3, and described joint neck 2 is installed in the slotted eye 11 on described handle body 1 top, and the head of described joint neck 2 is fixed in the hole of described femoral head 3 bottoms, described slotted eye 11 is up big and down small cylindric shoulder hole, described joint neck 2 is the inner bar that is provided with the cylindric ladder hole 21 of big at both ends and small in middle, described slotted eye 11 inner chamber tight fits have tapered sleeve 4, neck 2 middle parts, described joint are with two lugs 22, described tapered sleeve 4 upper surfaces offer two elongated slots 41 that fix described lug 22 downwards, described joint neck 2 heads are plugged with over cap 5, in described ladder hole 21, be plugged with screw rod 6, described screw rod 6 tops are stuck in above the first step 211 of described ladder hole 21, match with the screw thread 42 of described tapered sleeve 4 inner chamber bottoms in described screw rod 6 bottoms, described screw rod 6 overlaps and has spring 7 on the position between second step 212 and described tapered sleeve 4 intracavity bottoms of described ladder hole 21, described handle body 1 surface adhesion has the porous tantalum projection 12 of the strip of multiple horizontal distribution.
In order to realize mechanics Performance optimization in the situation that saving material, described porous tantalum projection 12 cross sections are triangle.
In order to realize better sealing, in described slotted eye 11, described tapered sleeve 4 tops are provided with sealing ring 8.
Human synovial surface of bone has cartilage layers, can in the time of joint motions, produce the effect of damping and bounce-back, greatly improves mechanical property and the harmony of motion.And elastic device is installed in the tapered sleeve of this utility model between joint neck and handle body, like this, joint neck and tapered sleeve can form relative motion, have played equally the effect of buffering, damping, make the original bony structures of implanting femoral head and human body more approaching, serviceability is better.Porous tantalum projection can strengthen biocompatibility, effectively prevents that handle body from sinking, and makes maintenance more stable.For preventing that movable part from producing rotation, the position being inserted in tapered sleeve at joint neck middle part is provided with lug.
Claims (3)
1. an implanting femoral head, comprise handle body (1), joint neck (2) and femoral head (3), described joint neck (2) is installed in the slotted eye (11) on described handle body (1) top, the head of described joint neck (2) is fixed in the hole of described femoral head (3) bottom, it is characterized in that: described slotted eye (11) is up big and down small cylindric shoulder hole, described joint neck (2) is provided with the bar of the cylindric ladder hole of big at both ends and small in middle (21) for inside, described slotted eye (11) inner chamber tight fit has tapered sleeve (4), described joint neck (2) middle part is with two lugs (22), described tapered sleeve (4) upper surface offers two elongated slots (41) that fix described lug (22) downwards, described joint neck (2) head is plugged with over cap (5), in described ladder hole (21), be plugged with screw rod (6), the first step (211) that described screw rod (6) top is stuck in described ladder hole (21) above, match with the screw thread (42) of described tapered sleeve (4) inner chamber bottom in described screw rod (6) bottom, described screw rod (6) overlaps and has spring (7) on the position between second step (212) and described tapered sleeve (4) intracavity bottom of described ladder hole (21), described handle body (1) surface adhesion has the porous tantalum projection (12) of the strip of multiple horizontal distribution.
2. implanting femoral head as claimed in claim 1, is characterized in that: described porous tantalum projection (12) cross section is triangle.
3. implanting femoral head as claimed in claim 1 or 2, is characterized in that: in described slotted eye (11), described tapered sleeve (4) top is provided with sealing ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320363081.2U CN203591360U (en) | 2013-06-24 | 2013-06-24 | Implantation femoral head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320363081.2U CN203591360U (en) | 2013-06-24 | 2013-06-24 | Implantation femoral head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203591360U true CN203591360U (en) | 2014-05-14 |
Family
ID=50672312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320363081.2U Expired - Fee Related CN203591360U (en) | 2013-06-24 | 2013-06-24 | Implantation femoral head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203591360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667625A (en) * | 2016-08-03 | 2017-05-17 | 张念非 | Artificial hip joint femoral stem |
-
2013
- 2013-06-24 CN CN201320363081.2U patent/CN203591360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667625A (en) * | 2016-08-03 | 2017-05-17 | 张念非 | Artificial hip joint femoral stem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20190624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |