CN203303198U - Biomimetic hip-joint - Google Patents

Biomimetic hip-joint Download PDF

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Publication number
CN203303198U
CN203303198U CN2013203631942U CN201320363194U CN203303198U CN 203303198 U CN203303198 U CN 203303198U CN 2013203631942 U CN2013203631942 U CN 2013203631942U CN 201320363194 U CN201320363194 U CN 201320363194U CN 203303198 U CN203303198 U CN 203303198U
Authority
CN
China
Prior art keywords
handle
joint
porous tantalum
hip
bionic 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
Application number
CN2013203631942U
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Chinese (zh)
Inventor
叶雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Runze Pharmaceutical Co Ltd
Original Assignee
Chongqing Runze Pharmaceutical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chongqing Runze Pharmaceutical Co Ltd filed Critical Chongqing Runze Pharmaceutical Co Ltd
Priority to CN2013203631942U priority Critical patent/CN203303198U/en
Application granted granted Critical
Publication of CN203303198U publication Critical patent/CN203303198U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

Abstract

The utility model relates to a biomimetic hip-joint. The biomimetic hip-joint comprises a handle body 1, and an acetabulum 2 connected with the handle body 1, and is characterized in that the acetabulum comprises a hemispherical acetabular cup 4 and an acetabular lining 3 sleeved in the acetabular cup 4, wherein the acetabular cup 4 is a porous tantalum work piece; a femur ball head is sleeved in the acetabular lining 3 and comprises a hemispherical ball head 2, a connecting shaft 6 on an end surface and a positioning cone 7 at the tail end of the connecting shaft 6; a positioning groove 8 is formed in the handle body 1 and corresponds to and is matched with the positioning cone 7 so as to realize connection; a plurality of L-shaped grooves are also formed in the front side and the rear side of the handle body 1; porous tantalum work pieces are adhered in the grooves, so as to allow the grooves to be aligned with the surface of the handle body 1. The biomimetic hip-joint is simple and reasonable in structure, and stable when connected with a human body, and has good biocompatibility.

Description

A kind of bionic hip-joint
Technical field
This utility model relates to the displacement of medical science bone to be transplanted, and relates in particular to a kind of bionic hip-joint.
Background technology
Artificial hip joint is a kind of for the human hip pathological changes, need to carry out the orthopaedics replacement operation time, and the alternative of implant into body medullary cavity plays fixing and supporting role in vivo.It can make patient recover to a certain extent the physiological function of hip joint, and alleviating pain, improve motion and quality of life.It consists of the first-class parts of femoral stem, acetabular bone and femur.
But the hip prosthesis overwhelming majority used in the prior art is the friction pair formed with the ossa articularia that the friction pair that metal, macromolecular material or ceramic material form replaces.Through repeatedly clinical experiment checking, following weak point has appearred in the artificial marrow joint of this known structure: first surface roughness is limited, cause the adhesion intensity of prosthese and bone surface not reach best state, biomechanics distributes uneven, femur bears gravity and is difficult to equilibrium, causes bone to dissolve and produces and become flexible; It two is with femur, to be difficult to fix in clinical practice, easily occurs looseningly, can not reach good coupling, causes postoperatively easily sinking; It three is that biocompatibility is poor, thereby with tissue, there will be repulsion to affect its service life after long-time the use, has increased the turnover rate of femoral stem.
The utility model content
The purpose of this utility model is to provide a kind of bionic hip-joint, and this bionic hip-joint is simple and reasonable, is connected firmly stablely with human body, and has good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A kind of bionic hip-joint, it includes the handle body, and the acetabular bone be connected with the handle body, it is characterized in that: described acetabular bone includes hemispherical mortar cup, and is socketed in the mortar lining in this mortar cup, and described mortar cup is set to the porous tantalum product; In described mortar lining, be socketed with the femoral ball head; This femur bulb includes the connecting axle on hemispheric bulb, end face, and the location frustum of connecting axle end setting; On described handle body, be provided with detent, with Corresponding matching described location frustum, realize the connection of the two, and before and after on described handle body, both sides also are provided with a plurality of L-type grooves, in this groove, all are attached with the porous tantalum product, so that this groove flushes with the handle surface after adhering to.
The porous tantalum product adhered in the groove arranged on above-mentioned handle body, and the above-mentioned mortar cup that is set to the porous tantalum product, its porosity is 60~70%.This porous tantalum product, can adopt the preparations such as foam dipping method, die pressing.Through the discovery that studies for a long period of time: the mortar cup and the handle body after adhering to for the porous tantalum product that adopt this porous tantalum product, the pore structure of growing in bone being grown into form, can organically combine as a whole with body bone tissue, in the biocompatibility that has greatly improved this artificial joint, also well met its mechanical property, greatly improved its service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.
The top of above-mentioned handle body is the nearly triangle bodily form, bottom is cylindrical, and wherein, handle body upper inner is interior circular arc, and the external side of handle is shape linearly, and to be from top to bottom tapering excessive on above-mentioned handle body top, by the inboard, lateral, is tapering excessive.
The degree of depth of the L-type groove arranged on above-mentioned handle body is 5~10 millimeters, that is the thickness of the porous tantalum product adhered in this L-type groove is 5~10 millimeters.
The surface of the porous tantalum product in the L-type groove on above-mentioned handle body also evenly is provided with 40~800 μ m hydroxyapatite surface coatings, so that it has the function of inducing bone cell growth.
The utlity model has following beneficial effect:
A plurality of L-type grooves distribute on the handle body of the bionic hip-joint in this utility model, and be filled with and have the pore structure product that bone is grown into, the structure of growing in having realized, with body bone tissue, organically combine as a whole, reach real biological fixation, strengthened its antitorque and anti-rotational stability.In addition, also have simple in structurely, compact and rationally, assemble efficient and conveniently, connect the characteristics such as reliable.
The accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the bionic hip-joint in this utility model embodiment 1.
Fig. 2 is the structural representation of the handle body of bionic hip-joint shown in Fig. 1.
Fig. 3 is the femur bulb of bionic hip-joint shown in Fig. 1 and the combinative structure cutaway view of acetabular bone.
Fig. 4 is the structural representation of mortar cup in bionic hip-joint shown in Fig. 1.
Fig. 5 is the structural representation that shown in Fig. 1, in bionic hip-joint, mortar serves as a contrast.
Fig. 6 is the structural representation of femur bulb in bionic hip-joint shown in Fig. 1.
The specific embodiment
Be below this utility model preferred embodiment, and be not intended to limit protection domain of the present utility model.
Embodiment 1
As shown in Fig. 1~6: a kind of bionic hip-joint, it includes handle body 1, and the acetabular bone be connected with handle body 1; Its acetabular bone includes hemispherical mortar cup 4, and serves as a contrast 3 by the fixedly sleeved polyethylene mortar this mortar cup 4 in of bonding, and mortar cup 4 is the porous tantalum product, and its porosity is 60~70%; In its polyethylene mortar lining 3, be socketed with the femoral ball head; This femur bulb includes the connecting axle 6 on hemispheric bulb 2, end face, and the location frustum 7 of connecting axle 6 ends, and this femur bulb adopts medical titanium alloy one-body molded; Its handle body 1 adopts medical titanium alloy one-body molded, on it, be provided with detent 8, after with Corresponding matching, connecting location frustum 7, by laser weld, realize the fixing of the two again, and before and after on this handle body 1 also to be provided with 3 degree of depth be the L-type groove of 5~10 millimeters in both sides, in this groove, all be attached with porosity and be 60~70% porous tantalum product 5, so that this groove after adhering to handle body 1 flush, and the surface uniform of this porous tantalum product 5 is coated with 40~800 μ m hydroxyapatite surface coatings; The top of its handle body 1 is the nearly triangle bodily form, bottom is cylindrical, and wherein, handle body 1 upper inner is interior circular arc, and arc radius is 100mm, and the outside is shape linearly, and to be from top to bottom tapering excessive on handle body 1 top, by the inboard, lateral, is tapering excessive.
In clinical practice, by the artificial hip joint implant into body hip joint position in this example, handle body 1 is inserted in the human femur under loading pulp cavity to the porous tantalum product 5 on its handle body 1, the structure of growing in bone being grown into form, and really realize biological fixation, not only improve its biocompatibility, improved service life and implanted comfort level, also increased anti-verticity and stability, met its mechanical property, and with the beneficial features such as human femur under loading pulp cavity physiology shape matches; In acetabular bone implant into body acetabular fossa, its polyethylene mortar lining 3 and the femur bulb coupling that adapts, and the femur bulb can serve as a contrast 3 at the polyethylene mortar and interiorly freely rotate, and realized the movable function of human hip.

Claims (9)

1. bionic hip-joint, it includes handle body (1), and the acetabular bone be connected with handle body (1), and it is characterized in that: described acetabular bone includes hemispherical mortar cup (4), and be socketed in the mortar lining (3) in this mortar cup (4), and described mortar cup (4) is set to the porous tantalum product; In described mortar lining (3), be socketed with the femoral ball head; This femur bulb includes the connecting axle (6) on hemispheric bulb (2), end face, and the location frustum (7) of connecting axle (6) end setting; On described handle body (1), be provided with detent (8), with the described location of Corresponding matching frustum (7), realize the connection of the two, and before and after described handle body (1) was upper, both sides also were provided with a plurality of L-type grooves, in this groove, all be attached with porous tantalum product (5) so that this groove after adhering to handle body (1) flush.
2. bionic hip-joint according to claim 1 is characterized in that: the porous tantalum product (5) adhered in the upper groove arranged of described handle body (1), and the described mortar cup (4) that is set to the porous tantalum product, its porosity is 60~70%.
3. bionic hip-joint according to claim 1 and 2, it is characterized in that: the top of described handle body (1) is the nearly triangle bodily form, bottom is cylindrical, wherein, handle body (1) upper inner is interior circular arc, handle body (1) outside is shape linearly, and it is excessive that described handle body (1) top is tapering from top to bottom, by the inboard, lateral, is tapering excessive.
4. bionic hip-joint according to claim 1 and 2 is characterized in that: the degree of depth of the upper L-type groove arranged of described handle body (1) is 5~10 millimeters.
5. bionic hip-joint according to claim 3 is characterized in that: the degree of depth of the upper L-type groove arranged of described handle body (1) is 5~10 millimeters.
6. bionic hip-joint according to claim 1 and 2, it is characterized in that: the surface of the porous tantalum product (5) in the L-type groove on described handle body (1) also evenly is provided with 40~800 μ m hydroxyapatite surface coatings.
7. bionic hip-joint according to claim 3, it is characterized in that: the surface of the porous tantalum product (5) in the L-type groove on described handle body (1) also evenly is provided with 40~800 μ m hydroxyapatite surface coatings.
8. bionic hip-joint according to claim 4, it is characterized in that: the surface of the porous tantalum product (5) in the L-type groove on described handle body (1) also evenly is provided with 40~800 μ m hydroxyapatite surface coatings.
9. bionic hip-joint according to claim 5, it is characterized in that: the surface of the porous tantalum product (5) in the L-type groove on described handle body (1) also evenly is provided with 40~800 μ m hydroxyapatite surface coatings.
CN2013203631942U 2013-06-24 2013-06-24 Biomimetic hip-joint Expired - Fee Related CN203303198U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203631942U CN203303198U (en) 2013-06-24 2013-06-24 Biomimetic hip-joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203631942U CN203303198U (en) 2013-06-24 2013-06-24 Biomimetic hip-joint

Publications (1)

Publication Number Publication Date
CN203303198U true CN203303198U (en) 2013-11-27

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Family Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104799925A (en) * 2015-04-28 2015-07-29 山东航维骨科医疗器械股份有限公司 Metal implant with high-density surface for orthopedics department
CN111281617A (en) * 2020-03-11 2020-06-16 北京市春立正达医疗器械股份有限公司 3D printing prosthesis and application

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104799925A (en) * 2015-04-28 2015-07-29 山东航维骨科医疗器械股份有限公司 Metal implant with high-density surface for orthopedics department
CN111281617A (en) * 2020-03-11 2020-06-16 北京市春立正达医疗器械股份有限公司 3D printing prosthesis and application

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131127

Termination date: 20190624