CN203328860U - Artificial hip joint - Google Patents
Artificial hip joint Download PDFInfo
- Publication number
- CN203328860U CN203328860U CN2013203632199U CN201320363219U CN203328860U CN 203328860 U CN203328860 U CN 203328860U CN 2013203632199 U CN2013203632199 U CN 2013203632199U CN 201320363219 U CN201320363219 U CN 201320363219U CN 203328860 U CN203328860 U CN 203328860U
- Authority
- CN
- China
- Prior art keywords
- joint
- neck
- hole
- screw rod
- artificial hip
- 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
Abstract
The utility model discloses an artificial hip joint which comprises a handle body, a joint neck and a femoral head body. The join neck is arranged in a slot of the upper portion of the handle body, and the head of the joint neck is fixed in a hole of the lower portion of the femoral head body. The slot is a cylindrical step hole with the big end up. The joint neck is a rod with a cylindrical step through hole with the two ends bigger than the middle arranged inside. A taper sleeve is tightly matched with an inner cavity of the slot, and two lugs are arranged in the middle of the joint neck. Two long grooves for clamping the lugs are downwards formed in the upper end face of the taper sleeve, a protection cover is inserted in the head of the joint neck, a screw rod is inserted in the step through hole, the upper portion of the screw rod is clamped on the first step of the step through hole, and the lower portion of the screw rod is matched with the lower portion of the inner cavity of the taper sleeve in a threaded mode. The screw rod is provided with a spring in a sleeved mode, and the spring is located between the second step of the step through hole and the bottom of the inner cavity of the taper sleeve. A porous tantalum layer is arranged on the surface of the handle body in a coating mode. The artificial hip joint of the structure improves adaptability, enhances biocompatibility, and is more convenient to use, and is more comfortable.
Description
Technical field
This utility model relates to a kind of artificial hip joint, relates in particular to that a kind of adaptability is good, biocompatibility is high, use comfortable artificial hip joint.
Background technology
Artificial hip joint is mainly used in the artificial replacement joints commonly used such as femur head necrosis, fracture of femoral neck.The original hip joint of human body has one deck periosteum between femoral head and acetabular bone, its role is to increase elasticity, reduces wearing and tearing.The manual acetabulum that after the implantable artificial hip joint, the acetabular bone of original sclerotin is processed into by ultra high molecular polyethylene replaces.The artificial thigh bone 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 artificial hip joint is comprised of hip joint stalk and femoral head, and hip joint stalk consists of handle body and joint neck one, and the other end of joint neck is installed femoral head.Handle body and the joint neck of existing artificial hip joint are fixed together, and make artificial hip joint not have the effect of periosteum, also just do not increase elasticity and reduce the effect of wearing and tearing, and it is very poor that user realizes running the adaptability of jumping function.
The utility model content
In view of the foregoing defects the prior art has, this utility model aims to provide that a kind of adaptability is good, biocompatibility is high, use comfortable artificial hip joint.
To achieve these goals, this utility model is by the following technical solutions: artificial hip joint comprises the handle body, joint neck and femoral head, described joint neck is installed in the slotted eye on described handle body top, 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 inner bar that is provided with the large middle small column shape ladder hole in two ends, 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, be plugged with screw rod in described ladder hole, 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 cover on the second step of described ladder hole and the position between described tapered sleeve intracavity bottom has spring, described handle surface is coated with the porous tantalum layer.
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, has improved the adaptability of artificial hip joint, has strengthened the biocompatibility of artificial hip joint, makes artificial hip joint more convenient to use and comfortable.
The accompanying drawing explanation
The structural representation that Fig. 1 is this utility model embodiment.
Fig. 2 is A-A direction cutaway view.
In figure: 1 handle body, 2 joint necks, 3 femorals head, 4 tapered sleeves, 5 over caps, 6 screw rods, 7 springs, 8 sealing rings, 11 slotted eyes, 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 artificial hip joint, as depicted in figs. 1 and 2, artificial hip joint 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 large middle small column shape ladder hole 21 in two ends, 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, be plugged with screw rod 6 in described ladder hole 21, 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 cover on the second step 212 of described ladder hole 21 and the position between described tapered sleeve 4 intracavity bottoms has spring 7, described handle body 1 surface spraying has the porous tantalum layer.
For the enhanced leaktightness effect, in described slotted eye 11, described tapered sleeve 4 tops are provided with sealing ring 8.In order further to strengthen sealing effectiveness, described sealing ring 8 is made by politef.
The human synovial surface of bone has cartilage layers, can produce the effect of damping and bounce-back when joint motions, can reduce wearing and tearing, greatly improves mechanical property and the harmony of motion.And spring 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, play the effect of buffering, damping.The porous tantalum layer can strengthen biocompatibility, artificial hip joint is combined tightr, natural with human body bone, and during use, convenience and comfortableness greatly improve.For preventing that movable part from producing rotation, the position be inserted in tapered sleeve at joint neck middle part is provided with lug.The artificial hip joint of this structure, can reduce impact and wearing and tearing in motion, more approaching with the original bone properties of human body, and the harmony while having strengthened motion is especially run the adaptability while jumping; Overcome that Traditional Man hip joint rigidity is had a surplus, the defect of compatibility deficiency, strengthened the biocompatibility of structure, made artificial hip joint in use convenient and comfortable.
Claims (3)
1. an artificial hip joint, 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) for inside be provided with two ends large in the middle of small column shape ladder holes (21) bar, 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), be plugged with screw rod (6) in described ladder hole (21), described screw rod (6) top is 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 bottom in described screw rod (6) bottom, described screw rod (6) cover on the second step (212) of described ladder hole (21) and the position between described tapered sleeve (4) intracavity bottom has spring (7), described handle body (1) surface spraying has the porous tantalum layer.
2. artificial hip joint as claimed in claim 1 is characterized in that: in described slotted eye (11), described tapered sleeve (4) top is provided with sealing ring (8).
3. artificial hip joint as claimed in claim 2, it is characterized in that: described sealing ring (8) is made by politef.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203632199U CN203328860U (en) | 2013-06-24 | 2013-06-24 | Artificial hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203632199U CN203328860U (en) | 2013-06-24 | 2013-06-24 | Artificial hip joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203328860U true CN203328860U (en) | 2013-12-11 |
Family
ID=49697568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203632199U Expired - Fee Related CN203328860U (en) | 2013-06-24 | 2013-06-24 | Artificial hip joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203328860U (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 CN2013203632199U patent/CN203328860U/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: 20131211 Termination date: 20190624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |