CN203417277U - Artificial hip joint handle - Google Patents

Artificial hip joint handle Download PDF

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Publication number
CN203417277U
CN203417277U CN201320508695.5U CN201320508695U CN203417277U CN 203417277 U CN203417277 U CN 203417277U CN 201320508695 U CN201320508695 U CN 201320508695U CN 203417277 U CN203417277 U CN 203417277U
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CN
China
Prior art keywords
femoral stem
neck
far
femoral
hip joint
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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
CN201320508695.5U
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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
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Chongqing Runze Pharmaceutical Co Ltd
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Priority to CN201320508695.5U priority Critical patent/CN203417277U/en
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Publication of CN203417277U publication Critical patent/CN203417277U/en
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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

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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 an artificial hip joint handle which comprises a head neck (1), a neck collar (3), a femoral handle near end (4) and a femoral handle far end (5). The artificial hip joint handle is characterized in that the front lateral face, the back lateral face and the upper end face of the femoral handle near end (4) are planes, the planes on the two sides are respectively provided with a circular-arc-shaped concave area (10), and other parts are interference-free hook faces. The femoral handle far end (5) is cylindrical, two symmetrical planes (6) are arranged on the femoral handle far end (5), and the tail ends of the femoral handle far end (5) are hemispheric. The femoral handle near end (4) and the femoral handle far end (5) are integrally of a hollow structure. The head neck (1), the femoral handle near end (4) and the femoral handle far end (5) are integrally molded respectively and arranged to be porous tantalum workpieces. The artificial hip joint handle is light in handle body structure, sinking and rotating can be effectively prevented, and the good biocompatibility is achieved at the same time.

Description

A kind of artificial hip joint stem
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 joint stem.
Background technology
The hip joint stalk that displacement transplant operation in medical domain is used, is generally made by titanium alloy, macromolecular material or ceramic material etc., similar in its morphology, but all has the many comparatively heavy problems of its handle body.Its fixed form adopts the combination of bone cement or biomaterial substantially, but find through practice all the year round, after in implanting pulp cavity when inserting near end of thighbone, it is difficult to mate with femur osteotomy surface fixing, the gravity that femur bears is difficult to equilibrium, is difficult to long-term fixing and loosening, freely-movable and rotation displacement easily occur; And biocompatibility is poor, thereby the long-time use of existence is rear and tissue there will be repulsion to shorten its service life, has increased the turnover rate of femoral stem, makes the discarded amount increase of femoral stem, is difficult to meet the modern technical problems such as environmental protection concept.
Utility model content
The purpose of this utility model is to provide a kind of artificial hip joint stem, and the handle body structure of this artificial hip joint stem is slim and graceful, can effectively prevent from and rotation, and have good biocompatibility concurrently.
The purpose of this utility model is achieved in that
A kind of artificial hip joint stem, 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 and upper surface are plane, and this two side plane is provided with circular arc sunk area, other parts are without interfering curved surface with coupling pulp cavity; Its femoral stem far-end is cylindrical, and which is provided with two symmetrical planes, and its end is hemispherical dome structure; Its femoral stem near-end and femoral stem far-end integral body are hollow structure; Described head and neck, described femoral stem near-end and described femoral stem far-end, be all set to porous tantalum product through one-body molded.
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.
Above-mentioned head and neck, above-mentioned femoral stem near-end and above-mentioned femoral stem far-end are all set to porous tantalum product, and its porosity is 60～65%.The porous tantalum product of this porosity, can meet at femoral stem near-end and femoral stem far-end is the mechanical property requirements in hollow structure situation, is suitable for this artificial hip joint stem.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: this artificial hip joint stem that adopts porous tantalum product, can make bone grow into and the structure of growing in forming, 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.
Above-mentioned is femoral stem near-end and the femoral stem far-end of hollow structure, and its wall thickness is 20～25mm.The femoral stem near-end of this thickness and femoral stem far-end can meet mechanical property and the requirement of strength of this artificial hip joint stem integral body, and its hollow structure alleviated overall weight, have realized whole slim and gracefulization of handle body.
The circular arc sunk area all arranging on two side planes of above-mentioned femoral stem near-end, its degree of depth is 2～3 mm, and up/down perforation is on two side planes of femoral stem near-end.This degree of depth and shape can be in the situation that meet the requirement of strength of femoral stem near-end, enlarge active surface to greatest extent, make its in conjunction with more stable firmly, and prevent from and rotation.
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 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 joint stem is designed to hollow structure, in conjunction with other structural design, in the situation that meet whole mechanical property and requirement of strength, has alleviated integrally-built weight, has realized whole slim and gracefulization of handle body.And the setting of its loose structure has greatly improved whole biocompatibility and implanted comfort level, and has good mechanical property, stability and anti-verticity after implanting have been increased.In addition, when it inserts near end of thighbone, circular arc depressed area and the femur wall docile of the up/down perforation on two side planes of its femoral stem near-end obtain closely, have further increased stability and anti-verticity after prosthese is implanted.Its simplicity of design, is suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of artificial hip joint stem 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 joint stem 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 joint stem described in this utility model embodiment 1.
Fig. 8 is the structural representation of the specialized nut of artificial hip joint stem 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 joint stem, 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 design according to femur cavitas medullaris shape, its femoral stem near-end 4 is part matched, before and after it, two sides and upper surface are smooth flat, and being provided with the degree of depth of up/down perforation on two side planes of this femoral stem near-end 4 on this two side plane is the circular arc sunk area 10 of 2.5 mm, other parts are without interfering curved surface with coupling pulp cavity; 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; Its femoral stem near-end 4 and femoral stem far-end 5 integral body are hollow structure, and its wall thickness is 22mm; Its head and neck 1, femoral stem near-end 4 and femoral stem far-end 5, be all set to the porous tantalum product that adopts foam dipping legal system standby, and its porosity is 60～65%, through one-body molded; 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;
During use, this artificial hip joint stem 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.This compact conformation is reasonable, and assembling is quick, connects reliably convenient use.

Claims (9)

1. an artificial hip joint stem, 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) and upper surface are plane, and this two side plane is provided with circular arc sunk area (10), other parts are without interfering curved surface; Its femoral stem far-end (5) is cylindrical, which is provided with two symmetrical planes (6), and its end is hemispherical; Its femoral stem near-end (4) and femoral stem far-end (5) integral body are hollow structure; Described head and neck (1), described femoral stem near-end (4) and described femoral stem far-end (5), be all set to porous tantalum product through one-body molded.
2. artificial hip joint stem 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 joint stem according to claim 1 and 2, is characterized in that: described head and neck (1), described femoral stem near-end (4) and described femoral stem far-end (5) are all set to porous tantalum product, and its porosity is 60～65%.
4. artificial hip joint stem according to claim 1 and 2, is characterized in that: described is the femoral stem near-end (4) of hollow structure and femoral stem far-end (5), and its wall thickness is 20～25mm; The circular arc sunk area (10) all arranging on two side planes of described femoral stem near-end (4), its degree of depth is 2～3 mm, and up/down perforation is on two side planes of femoral stem near-end (4).
5. artificial hip joint stem according to claim 3, is characterized in that: described is the femoral stem near-end (4) of hollow structure and femoral stem far-end (5), and its wall thickness is 20～25mm; The circular arc sunk area (10) all arranging on two side planes of described femoral stem near-end (4), its degree of depth is 2～3 mm, and up/down perforation is on two side planes of femoral stem near-end (4).
6. artificial hip joint stem according to claim 2, is characterized in that: on the upper surface of described specialized nut (2), be evenly equipped with four blind cylindrical hole (7); 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 joint stem according to claim 2, is characterized in that: described head and neck (1), described femoral stem near-end (4) and described femoral stem far-end (5) are all set to porous tantalum product, and its porosity is 60～65%; On the upper surface of described specialized nut (2), be evenly equipped with four blind cylindrical hole (7); 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 joint stem according to claim 2, is characterized in that: described is the femoral stem near-end (4) of hollow structure and femoral stem far-end (5), and its wall thickness is 20～25mm; The circular arc sunk area (10) all arranging on two side planes of described femoral stem near-end (4), its degree of depth is 2～3 mm, and up/down perforation is on two side planes of femoral stem near-end (4); On the upper surface of described specialized nut (2), be evenly equipped with four blind cylindrical hole (7); 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 joint stem according to claim 2, is characterized in that: described head and neck (1), described femoral stem near-end (4) and described femoral stem far-end (5) are all set to porous tantalum product, and its porosity is 60～65%; Described is femoral stem near-end (4) and the femoral stem far-end (5) of hollow structure, and its wall thickness is 20～25mm; The circular arc sunk area (10) all arranging on two side planes of described femoral stem near-end (4), its degree of depth is 2～3 mm, and up/down perforation is on two side planes of femoral stem near-end (4); On the upper surface of described specialized nut (2), be evenly equipped with four blind cylindrical hole (7); 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).
CN201320508695.5U 2013-08-20 2013-08-20 Artificial hip joint handle Expired - Fee Related CN203417277U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320508695.5U CN203417277U (en) 2013-08-20 2013-08-20 Artificial hip joint handle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320508695.5U CN203417277U (en) 2013-08-20 2013-08-20 Artificial hip joint handle

Publications (1)

Publication Number Publication Date
CN203417277U true CN203417277U (en) 2014-02-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104921844A (en) * 2015-06-29 2015-09-23 北京贝思达生物技术有限公司 Biological hip joint
CN106491247A (en) * 2016-12-27 2017-03-15 西安交通大学 A kind of hollow buffer structure for artificial prosthesis
CN116138932A (en) * 2023-04-21 2023-05-23 北京纳通医疗科技控股有限公司 Femoral stem and hip joint prosthesis with same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104921844A (en) * 2015-06-29 2015-09-23 北京贝思达生物技术有限公司 Biological hip joint
CN106491247A (en) * 2016-12-27 2017-03-15 西安交通大学 A kind of hollow buffer structure for artificial prosthesis
CN106491247B (en) * 2016-12-27 2017-12-26 西安交通大学 A kind of hollow buffer structure for artificial prosthesis
CN116138932A (en) * 2023-04-21 2023-05-23 北京纳通医疗科技控股有限公司 Femoral stem and hip joint prosthesis with same
CN116138932B (en) * 2023-04-21 2023-08-04 北京纳通医疗科技控股有限公司 Femoral stem and hip joint prosthesis with same

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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: 20140205

Termination date: 20190820