CN203483544U - Artificial hip joint prosthesis handle - Google Patents

Artificial hip joint prosthesis handle Download PDF

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Publication number
CN203483544U
CN203483544U CN201320501320.6U CN201320501320U CN203483544U CN 203483544 U CN203483544 U CN 203483544U CN 201320501320 U CN201320501320 U CN 201320501320U CN 203483544 U CN203483544 U CN 203483544U
Authority
CN
China
Prior art keywords
femoral stem
neck
artificial hip
far
femoral component
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
CN201320501320.6U
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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.)
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Publication date
Application filed by Chongqing Runze Pharmaceutical Co Ltd filed Critical Chongqing Runze Pharmaceutical Co Ltd
Priority to CN201320501320.6U priority Critical patent/CN203483544U/en
Application granted granted Critical
Publication of CN203483544U publication Critical patent/CN203483544U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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 relates to an artificial hip joint prosthesis handle comprising a head neck (1), a neck collar (3), a femoral component near end (4) and a femoral component far end (5). The artificial hip joint prosthesis handle is characterized in that the front and the back sides of the femoral component near end (4) are plane; the rest parts are non-interference curved surfaces; the femoral component near end (4) are formed by two parts; the external side of the femoral component near end (4) is a rod-shaped body (10) with one plane side surface; the internal side of the femoral component near end (4) is an approximate triangular body (11) with a plane external end surface; the femoral component far end (5) is cylindrical; two symmetrical planes (6) are arranged on the femoral component far end (5); the tail end of the femoral component far end (5) is semi-circle-shaped; the rod-shaped body (10) on the external side of the femoral component near end (4) and the femoral component far end (5) are both porous tantalum members; with all-in-one formation, an axis of the handle is added a hollow perforation (12); and the external side surface of the rod-shaped body (10) and the external side surface of the femoral component far end (5) are both added a hollow recessed area (13). Great biological compatibility is provided; air and blood can be easily drained; and sinking and rotation can be effectively prevented by the use of the artificial hip joint prosthesis handle.

Description

A kind of artificial hip prosthesis's handle
Technical field
This utility model relates to bone displacement and transplants the artificial joint of use, relates in particular to a kind of artificial hip prosthesis's handle.
Background technology
Hip prosthesis is the artificial joint using in artificial bone surgery, and in order to when human hip pathological changes need to be carried out orthopaedics replacement operation, implant into body is replaced the hip joint of disabling, and makes it recover physiological function, removes ailing.Similar in the morphology of current most hip prosthesis handle, its fixed form adopts the combination of bone cement or biomaterial substantially, the particularly implantation of biological ansa, through practice all the year round, find, this articular prosthesis handle in implanting pulp cavity after, when inserting near end of thighbone, its each side and femur laminating are all comparatively tight, air in femoral bone cavitas medullaris, blood etc. are discharged difficulty, easily cause the pressure in femoral bone cavitas medullaris obviously to increase, and have greatly improved the incidence rate of fat embolism syndrome.And artificial hip prosthesis's handle of existing biological fixation type is generally made by alloys such as titanium alloys, its biocompatibility is poor, thereby use is for a long time rear and tissue there will be repulsion to affect its service life, to the harmful effect on the functional effect meeting generating technique of operation.In addition, its also exist be difficult to mate with femur osteotomy surface fixing, and easily generation become flexible, freely-movable and rotation displacement; The artificial femur handle alternative and the pulp cavity that mate femoral bone cavitas medullaris are completely interfered, and bear gravity and are difficult to equilibrium etc. technical problem.
Utility model content
The purpose of this utility model is to provide a kind of artificial hip prosthesis's handle, and this artificial hip prosthesis's handle good biocompatibility, is also convenient to the discharges such as air, blood, and can effectively prevent from and rotation.
The purpose of this utility model is achieved in that
A kind of artificial hip prosthesis's handle, it includes head and neck, neck neck, femoral stem near-end and femoral stem far-end, it is characterized in that: described femoral stem near-end and described femoral stem far-end design according to femur cavitas medullaris shape, its femoral stem near-end is part matched, before and after it, two sides are plane, and other parts are without interfering curved surface with coupling pulp cavity; This femoral stem near-end is comprised of two parts, and its Outboard Sections is that a side is the clava of plane, and its medial part is divided into the nearly trigone that outer face is plane; Its femoral stem far-end is cylindrical, and which is provided with two symmetrical planes, and its end is hemispherical dome structure; The clava of described femoral stem near-end Outboard Sections and this femoral stem far-end are all set to porous tantalum product, and through one-body molded, and axle center also has additional the perforation of up/down perforation; On the outer surface of described claval outer surface and this femoral stem far-end, also have additional the depressed area of up/down perforation, with enlarge active surface, prevent from and rotation.
Above-mentioned neck neck is for disposing the movable circular neck neck of specialized nut, and its top is provided with spherical concave surface, in the middle of this spherical concave surface, is provided with a key-way shape through hole; Described specialized nut lower end is spherical structure, and its spherical diameter is identical with the spherical concave surface on movable circular neck neck.
The clava of above-mentioned femoral stem near-end Outboard Sections and this femoral stem far-end integral body are all set to porous tantalum product, and 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: adopt porous tantalum product whole as the clava of femoral stem near-end Outboard Sections and this femoral stem far-end, can make bone this artificial joint structure of growing in forming of growing into, and organically combine as a whole with body bone tissue, when greatly having improved biocompatibility, also well met its mechanical property, improved service life and implanted comfort level, having increased stability and anti-verticity after prosthese is implanted.
The aperture of above-mentioned perforation is set to 2～4 mm, to meet its requirement of strength, and its be up/down perforation through this femoral stem near-end and femoral stem far-end, during for materials such as the air in discharge femoral bone cavitas medullaris, blood, pressure in femoral bone cavitas medullaris can obviously not increase, and the incidence rate of fat embolism syndrome will obviously decline.
The nearly trigone of above-mentioned head and neck and above-mentioned femoral stem near-end inner side part, one-body molded for conventional medical metal, and realize claval being fixedly connected with above-mentioned femoral stem near-end Outboard Sections through welding.This connected mode is solid and reliable.
On the upper surface of above-mentioned specialized nut, be evenly equipped with four blind cylindrical hole, to be mainly used to rotate this specialized nut.
The depressed area of above-mentioned up/down perforation, its degree of depth is 1～2 mm; This degree of depth can be in the situation that meet the requirement of strength of femoral stem near-end and femoral stem far-end, to greatest extent enlarge active surface.
The radius of the end hemispherical dome structure of above-mentioned femoral stem far-end is identical with the radius of columniform femoral stem far-end, and this is rational in infrastructure.
The utlity model has following beneficial effect:
This artificial hip prosthesis handle is provided with the perforation of up/down perforation, when it inserts near end of thighbone, the materials such as the air in femoral bone cavitas medullaris, blood, can discharge in time along this perforation, pressure in femoral bone cavitas medullaris can obviously not increase, and the incidence rate of fat embolism syndrome will obviously decline.In addition, when it inserts near end of thighbone, the depressed area of its up/down perforation and femur wall docile obtain closely, have increased stability and anti-verticity after prosthese is implanted.Its simplicity of design, is convenient to make, and is suitable for generally promoting the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of artificial hip prosthesis's handle described in this utility model embodiment 1.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is that the axle of artificial hip prosthesis's handle described in this utility model embodiment 1 is surveyed view.
Fig. 5 is the B-B cutaway view of Fig. 1.
Fig. 6 is the C-C cutaway view of Fig. 1.
Fig. 7 is the structural representation of the movable circular neck neck of artificial hip prosthesis's handle described in this utility model embodiment 1.
Fig. 8 is the structural representation of the specialized nut of artificial hip prosthesis's handle described in this utility model embodiment 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 accompanying drawing 1～8: a kind of artificial hip prosthesis's handle, it includes screwed head and neck 1, movable circular neck neck 3, femoral stem near-end 4 and femoral stem far-end 5; This femoral stem near-end 4 and femoral stem far-end 5 are according to femur cavitas medullaris shape design, and its femoral stem near-end 4 is part matched, and before and after it, two sides are smooth flat, and other parts are without interfering curved surface with coupling pulp cavity; This femoral stem near-end 4 is comprised of two parts, and its Outboard Sections is that a side is the clava 10 of plane, and its medial part is divided into the nearly trigone 11 that outer face is plane; Its femoral stem far-end 5 is one cylindrical, is arranged with two planes 6 on this cylinder, and the end of this femoral stem far-end 5 is the hemispherical dome structure that Radius is identical with this cylindrical radius; Clava 10 and these femoral stem far-end 5 integral body of its femoral stem near-end 4 Outboard Sections are all set to the porous tantalum product that adopts foam dipping legal system standby, its porosity is 60～70%, through one-body molded, and axle center also has additional up/down perforation through the perforation 12 of this femoral stem near-end 4 and femoral stem far-end 5, and the aperture of this perforation 12 is 3 mm; The degree of depth that also has additional up/down perforation on the outer surface of clava 10 and the outer surface of this femoral stem far-end 5 is the depressed area 13 of 1.5 mm; Movable circular neck neck 3 disposes specialized nut 2, and its top is provided with spherical concave surface 9, is provided with a key-way shape through hole 8, with Matching installation head and neck 1 in the middle of this spherical concave surface 9; These specialized nut 2 lower ends are spherical structure, and its spherical diameter is identical with the spherical concave surface 9 on movable circular neck neck 3, and on the upper surface of this specialized nut 2, are evenly equipped with four blind cylindrical hole 7, to be mainly used to rotate this specialized nut 2; The nearly trigone 11 of its head and neck 1 and femoral stem near-end 4 inner side parts is that medical titanium alloy is one-body molded, and realizes and being fixedly connected with of the clava 10 of femoral stem near-end 4 Outboard Sections through high-power electron beam welding.
During use, this artificial hip prosthesis handle is implanted after pulp cavity, the key-way shape through hole of movable circular neck neck 38 is passed to head and neck 1, again specialized nut 2 is rotated on head and neck 1 screw thread below, when mounted by movable circular neck neck 3 and specialized nut 2 coordinating at spherical concave surface 9 places, make movable circular neck neck 3 and femur osteotomy surface Adaptive matching, when rotation specialized nut 2, will guarantee that femoral stem is fixed well.

Claims (9)

1. artificial hip prosthesis's handle, it includes head and neck (1), neck neck (3), femoral stem near-end (4) and femoral stem far-end (5), it is characterized in that: the two sides, front and back of this femoral stem near-end (4) are plane, and other parts be nothing interference curved surface; This femoral stem near-end (4) is comprised of two parts, and its outside is that a side is the clava (10) of plane, the nearly trigone (11) that its inner side is plane for outer face; Its femoral stem far-end (5) is cylindrical, which is provided with two symmetrical planes (6), and its end is hemispherical; Clava (10) and this femoral stem far-end (5) in described femoral stem near-end (4) outside are all set to porous tantalum product, and through one-body molded, and axle center also has additional the perforation (12) of up/down perforation; On the outer surface of the outer surface of described clava (10) and this femoral stem far-end (5), also have additional the depressed area (13) of up/down perforation.
2. artificial hip prosthesis's handle according to claim 1, it is characterized in that: described neck neck (3) is for disposing the movable circular neck neck of specialized nut (2), its top is provided with spherical concave surface (9), is provided with a key-way shape through hole (8) in the middle of this spherical concave surface (9); Described specialized nut (2) lower end is spherical structure, and its spherical diameter is identical with the spherical concave surface (9) on movable circular neck neck.
3. artificial hip prosthesis's handle according to claim 2, is characterized in that: clava (10) and this femoral stem far-end (5) integral body in described femoral stem near-end (4) outside are all set to porous tantalum product, and its porosity is 60～70%; On the upper surface of described specialized nut (2), be evenly equipped with four blind cylindrical hole (7).
4. artificial hip prosthesis's handle according to claim 1 and 2, is characterized in that: the aperture of described perforation (12) is set to 2～4 mm, and its be up/down perforation through this femoral stem near-end (4) and femoral stem far-end (5); The depressed area of described up/down perforation (13), its degree of depth is 1～2 mm.
5. artificial hip prosthesis's handle according to claim 3, is characterized in that: the aperture of described perforation (12) is set to 2～4 mm, and its be up/down perforation through this femoral stem near-end (4) and femoral stem far-end (5); The depressed area of described up/down perforation (13), its degree of depth is 1～2 mm.
6. artificial hip prosthesis's handle according to claim 1 and 2, it is characterized in that: the nearly trigone (11) of described head and neck (1) and described femoral stem near-end (4) inner side, one-body molded for medical metal, and realize and being fixedly connected with of clava (10) outside described femoral stem near-end (4) through welding; The radius of the end hemispherical dome structure of described femoral stem far-end (5) is identical with the radius of columniform femoral stem far-end (5).
7. artificial hip prosthesis's handle according to claim 3, it is characterized in that: the nearly trigone (11) of described head and neck (1) and described femoral stem near-end (4) inner side, one-body molded for medical metal, and realize and being fixedly connected with of clava (10) outside described femoral stem near-end (4) through welding; The radius of the end hemispherical dome structure of described femoral stem far-end (5) is identical with the radius of columniform femoral stem far-end (5).
8. artificial hip prosthesis's handle according to claim 4, it is characterized in that: the nearly trigone (11) of described head and neck (1) and described femoral stem near-end (4) inner side, one-body molded for medical metal, and realize and being fixedly connected with of clava (10) outside described femoral stem near-end (4) through welding; The radius of the end hemispherical dome structure of described femoral stem far-end (5) is identical with the radius of columniform femoral stem far-end (5).
9. artificial hip prosthesis's handle according to claim 5, it is characterized in that: the nearly trigone (11) of described head and neck (1) and described femoral stem near-end (4) inner side, one-body molded for medical metal, and realize and being fixedly connected with of clava (10) outside described femoral stem near-end (4) through welding; The radius of the end hemispherical dome structure of described femoral stem far-end (5) is identical with the radius of columniform femoral stem far-end (5).
CN201320501320.6U 2013-08-16 2013-08-16 Artificial hip joint prosthesis handle Expired - Fee Related CN203483544U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320501320.6U CN203483544U (en) 2013-08-16 2013-08-16 Artificial hip joint prosthesis handle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320501320.6U CN203483544U (en) 2013-08-16 2013-08-16 Artificial hip joint prosthesis handle

Publications (1)

Publication Number Publication Date
CN203483544U true CN203483544U (en) 2014-03-19

Family

ID=50254414

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320501320.6U Expired - Fee Related CN203483544U (en) 2013-08-16 2013-08-16 Artificial hip joint prosthesis handle

Country Status (1)

Country Link
CN (1) CN203483544U (en)

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GR01 Patent grant
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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: 20140319

Termination date: 20190816