CN203873917U - Bone cement hip prosthesis - Google Patents

Bone cement hip prosthesis Download PDF

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Publication number
CN203873917U
CN203873917U CN201420256135.XU CN201420256135U CN203873917U CN 203873917 U CN203873917 U CN 203873917U CN 201420256135 U CN201420256135 U CN 201420256135U CN 203873917 U CN203873917 U CN 203873917U
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China
Prior art keywords
plane
bone cement
hip prosthesis
bone
femoral stem
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CN201420256135.XU
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Chinese (zh)
Inventor
刘博�
杨靖宇
赵学东
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Beijing Prestige Francis Koo Artificial Joint Development Corp Ltd
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Beijing Prestige Francis Koo Artificial Joint Development Corp Ltd
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Application filed by Beijing Prestige Francis Koo Artificial Joint Development Corp Ltd filed Critical Beijing Prestige Francis Koo Artificial Joint Development Corp Ltd
Priority to CN201420256135.XU priority Critical patent/CN203873917U/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
    • A61F2/34—Acetabular cups
    • 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
    • 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 a bone cement hip prosthesis comprising an acetabulum, a ball head and a femoral stem. The acetabulum is a hemispherical shell, the inner surface of the acetabulum sleeves the ball head, and the inner conical table of the ball head is used for connecting to the head of the femoral stem; the head and neck of the femoral stem is in an integral formed structure with the femoral stem, and the femoral stem comprises a near end, a middle segment and a far end and is in a double-cone structure; one end of the femoral stem adjacent to the neck is provided with a screwed hole; the hemispherical surface of the acetabulum is provided with a plurality of annular grooves parallel to the hemispherical section and a plurality of projections which are arranged on the same plane parallel to the hemispherical section. The bone cement hip prosthesis has the advantages that the connecting strength between the prosthesis and the human femur can be increased effectively, damage on the bone marrow cavity is reduced, biocompatibility is high, service life is prolonged, the bone cement fixing effect is fine, and the prosthesis has fine pressure resistance and wear resistance.

Description

Bone cement hip prosthesis
Technical field
This utility model relates to medical instruments field, more particularly relates to a kind of bone cement hip prosthesis that is implanted to human hip position with surgical method.
Background technology
Bone cement hip prosthesis replacement operation has become relatively ripe surgical operation in medical circle at present, but how to be beneficial to sclerotin in femoral bone cavitas medullaris as the implant bone cement hip prosthesis of femur, to grow into and maintains stability and remain the problem of constantly exploring in industry.Bone cement hip prosthesis generally comprises acetabular bone, bulb and femoral stem, and in the Internal Spherical Surface of acetabular bone indent, suit bulb, is set with femoral stem in the inner circle frustum of bulb indent molding.Existing femoral stem adopts bone cement, surperficial machining roughened surface etc. mostly, for increasing the contact area of artificial femur handle and sclerotin and frictional force to prevent the loosening of bone cement hip prosthesis.This processing has good stability in the starting stage, but due to bone cement-intermetallic activity, relating to that this surface is more coarse can produce more bone cement abrasive dust.In addition, during acetabular component is used, because abrasive dust moves to dome from acetabular component periphery, cause the reaction of surrounding tissue cellular immunity, cause bone to dissolve; The passage moving in order to reduce abrasive dust, reply surrounding bone cement pressurizes.
Learn thus, existing bone cement hip prosthesis, in structure and use, obviously still has inconvenience and defect, is urgently improved.How to develop the bonding strength of a kind of effective increase and human femur under loading, little to medullary cavity injury, have long, good bone cement fixed effect of life-span and the bone cement hip prosthesis prosthese of the withstand voltage wearability of prosthese concurrently, be one of current important research topic in this area.
Utility model content
The purpose of this utility model is to provide a kind of bone cement hip prosthesis, this prosthese can effectively increase the bonding strength with human femur under loading, little to medullary cavity injury, and have that good biocompatibility, life-span are long, the good advantage of bone cement fixed effect and the withstand voltage wearability of prosthese concurrently.
To achieve these goals, this utility model by the following technical solutions: a kind of bone cement hip prosthesis, comprise acetabular bone, bulb and femoral stem, acetabular bone is hemispheric housing, comprises housing outer surface, inner surface and hemisphere tangent plane; Bulb comprises horizontal end face that outside spheroid, spheroid one end mill out, along the inner circle frustum of the horizontal end face indent of spheroid molding; Femoral stem is integrally connected molding successively by the head of truncated cone, cervical region and the handle body that cylinder both sides mill out plane.
The inner surface suit bulb of acetabular bone, the inner circle frustum of bulb is for accessing the head of femoral stem.
Wherein, the head of handle body, cervical region and the handle body structure that is formed in one, handle body comprises near end of thighbone and far-end; The two sides, front and back of near-end and upper surface are plane, and other parts are without interfering curved surface; Handle body is the structure with the first tapering and the second tapering, and the first tapering is for to dwindle gradually from the lower end of near-end front and back sides the tapering that extends to far-end; The second tapering is from the near-end of handle body left and right side to the diminishing tapering of far-end; Handle body is provided with near one end of cervical region the screwed hole of being convenient to load and take out femoral stem.
The hemisphere surface of acetabular bone is provided with some the annulus grooves parallel with hemisphere tangent plane, and the outer surface top of Loadings On Hemispherical Shell is also provided with several projections, and projection is located on same plane, and this plane is parallel with hemisphere tangent plane.
Preferably, the handle body of femoral stem is press polished handle body, and cervical region is press polished cervical region.
Preferably, head is truncated cone shape, and the ratio of the circular diameter of its upper surface and lower surface is 12:14.
Preferably, handle body far-end is provided with guide head, and this guide head is used for connecting middle-device.
As another preferred version of the present utility model, the outer surface of acetabular bone direction vertical along the depression position between projection and hemisphere tangent plane is provided with groove.
Preferably, the hemisphere tangent plane of acetabular bone stretches out and is provided with the annular anticreep parts with unfilled corner face, unfilled corner face be on anticreep parts one side position near the end of hemisphere tangent plane the axis direction to acetabular bone, do the plane that outward-dipping extension obtains.
In order further to solve the technical problem of acetabular bone dislocation, anticreep parts periphery wall is provided with the first inclined plane; The first inclined plane be on periphery wall near the end of hemisphere tangent plane the axis direction to acetabular bone, do the plane that outward-dipping extension obtains; Angle between the first inclined plane and the axis of acetabular bone is 10 °.
Preferably, the internal perisporium of anticreep parts is provided with the second inclined plane; The second inclined plane be on internal perisporium near the end of hemisphere tangent plane to periphery wall direction, do the plane that outward-dipping extension obtains.
Preferably, the neighboring of the hemisphere tangent plane of acetabular bone is surrounded with tinsel.
The bone cement hip prosthesis of this practical utility model at least possesses following advantage:
1, the femoral stem life-span is long: the design of high polished surface reduces that bone cement handle fine motion state sending down the fishbone cement layer breaks and the generation of chip, effectively reduces bone and dissolves, and uses the time-to-live long.
2, femoral stem stability and good biocompatibility: double tapered design, realizes in bone cement sheath stable.
3, the bone cement good fixing effect of acetabular bone, withstand voltage wear-resisting: the projection of acetabular bone outer surface, guarantee even bone cement thickness, reduced the movement of abrasive dust; And surface grooves designs, increase the fixed effect of bone cement; The anti-dislocation design of 10 ° of flash of acetabular bone, makes the socket of acetabular bone and bulb more firm.
4, the structure based on femoral stem, bulb and acetabular bone, has increased this artificial joint surface roughness and porosity, effectively increases the bonding strength with human femur under loading.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail.
Fig. 1 is the overall structure schematic diagram of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 2 is the overall package schematic diagram of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 3 is acetabular bone and the bulb package assembly schematic diagram of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 4 is the acetabular bone of specific embodiment 1 and the cutaway view of bulb assembling of this utility model bone cement hip prosthesis;
Fig. 5 is the acetabular bone structural representation of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 6 is the cutaway view of acetabular bone structure of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 7 is the front view of femoral stem of the specific embodiment 1 of this utility model bone cement hip prosthesis;
Fig. 8 is the left view of femoral stem of the specific embodiment 1 of this utility model bone cement hip prosthesis.
The specific embodiment
Specific embodiment
Bone cement hip prosthesis of the present utility model, as shown in Fig. 1～4, a kind of bone cement hip prosthesis, comprises acetabular bone 1, bulb 2 and femoral stem 3; Acetabular bone 1 is hemispheric housing, comprises spherical shell outer surface 11, inner surface 12 and hemisphere tangent plane 13; Bulb 2 comprises outside spheroid 21, the horizontal end face 22 milling out, along the inner circle frustum 23 of the horizontal end face 22 indent molding of spheroid; Femoral stem 3 is connected with handle body 33 successively by the head 31 of the frustum of a cone, the cervical region 32 that cylinder both sides mill out plane, and integrated molding.
The inner surface suit bulb 2 of acetabular bone 1, the inner circle frustum 23 of bulb 2 is for accessing the head 31 of femoral stem 3.
As shown in Figure 7 and Figure 8, handle body 33 includes near-end 331 and far-end 333, and the two sides, front and back of near-end and upper surface are plane, and other parts of handle body 33 are without interfering curved surface.Handle body 33 has double tapered structure, and the first tapering 334 is for dwindling gradually and extend to the cone-shaped of far-end 333 from near-end 331 triangle bodies; The second tapering 335 is from the near-end 331 of handle body 33 sides to the diminishing tapering of far-end 333.Handle body 33 is provided with screwed hole 34 near one end of cervical region 32, is convenient to load and takes out femoral stem 33.
Wherein, handle body 33 is press polished handle body, and cervical region 32 is press polished cervical region, and high polishing is designed with 3 the Quadratic Stability that is beneficial to femoral stem.The frustum of a cone upper surface of head 31 and the diameter ratio of lower surface are 12:14, increase the mobility of femoral stem 3 in the time of neck portion design.Handle body 33 far-ends 333 are also provided with guide head 35, and this guide head 35 is for connecting middle-device (figure does not identify).
As shown in Figure 5 and Figure 6, the hemisphere surface of acetabular bone 1 is provided with some the annulus grooves 14 parallel with hemisphere tangent plane 13, and the outer surface of acetabular bone 1 is provided with several projections 15, and some projections 15 are located on same plane, and this plane is parallel with hemisphere tangent plane 13.
Along the depression position of 15 of projections, vertical and hemisphere tangent plane 13 is provided with groove 16 to the outer surface 11 of acetabular bone 1.The hemisphere tangent plane 13 of acetabular bone 1 stretches out and is provided with the annular anticreep parts 17 with unfilled corner face 18, unfilled corner face 18 be on anticreep parts 17 1 side positions near the end of hemisphere tangent plane 13 the axis direction to acetabular bone 1, do the plane that outward-dipping extension obtains.
Anticreep parts 17 periphery walls are provided with the first inclined plane 19; The first inclined plane 19 be on periphery wall near the end of hemisphere tangent plane 13 the axis direction to acetabular bone 1, do the plane that outward-dipping extension obtains.Angle between the first inclined plane 19 and the axis of acetabular bone 1 is 10 °, is the anti-dislocation design of flash.
The internal perisporium of anticreep parts 17 is provided with the second inclined plane 20; The second inclined plane 20 be on internal perisporium near the end of hemisphere tangent plane 13 to periphery wall direction, do the plane that outward-dipping extension obtains.
The neighboring of the hemisphere tangent plane 13 of acetabular bone 1 is surrounded with tinsel (not indicating in figure), and this structure is convenient to the position of hands clinical follow prosthese.
Bone cement hip prosthesis of the present utility model, the high polished surface design of femoral stem reduces that bone cement handle fine motion state sending down the fishbone cement layer breaks and the generation of chip, effectively reduces bone and dissolves, and uses the time-to-live long; Double tapered design, realizes in bone cement sheath stable.The bone cement good fixing effect of acetabular bone, withstand voltage wear-resisting.Structure based on femoral stem, bulb and acetabular bone, has increased this artificial joint surface roughness and porosity, effectively increases the bonding strength with human femur under loading.
The above embodiment is only that preferred implementation of the present utility model is described; not scope of the present utility model is limited; do not departing under the prerequisite of this utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.

Claims (9)

1. a bone cement hip prosthesis, comprise acetabular bone (1), bulb (2) and femoral stem (3), described acetabular bone (1) is hemispheric housing, comprises housing outer surface (11), inner surface (12) and hemisphere tangent plane (13); Described bulb (2) comprises horizontal end face (22) that outside spheroid (21), spheroid (21) one end mill out, along the inner circle frustum (23) of the horizontal end face indent of spheroid molding; Described femoral stem (3) is integrally connected molding successively by the head (31) of truncated cone, cervical region (32) and the handle body (33) that cylinder both sides mill out plane;
Inner surface (12) the suit bulb (2) of described acetabular bone (1), the inner circle frustum of bulb (2) is used for accessing the head (31) of femoral stem (3);
It is characterized in that, described handle body (3) comprises near end of thighbone (331) and far-end (333), and the two sides, front and back of described near-end (331) and upper surface are plane, and other parts are without interfering curved surface; Described handle body (33) is for having the structure of the first tapering (334) and the second tapering (335), and described the first tapering (334) is for to dwindle gradually from the lower end of near-end (332) front and back sides the tapering that extends to far-end (333); Described the second tapering (335) is from the near-end (331) of handle body (3) left and right side to the diminishing tapering of far-end (333); Described handle body (3) is provided with near one end of cervical region (32) the screwed hole (34) of being convenient to load and take out femoral stem (33);
The outer surface (11) of described acetabular bone (1) is provided with some the annulus grooves (14) parallel with hemisphere tangent plane (13), the outer surface of described Loadings On Hemispherical Shell (11) top is also provided with several projections (15), described projection (15) is located on same plane, and this plane is parallel with hemisphere tangent plane (13).
2. bone cement hip prosthesis as claimed in claim 1, is characterized in that, described handle body (33) is press polished handle body, and described cervical region (32) is press polished cervical region.
3. bone cement hip prosthesis as claimed in claim 2, is characterized in that, the frustum of a cone upper surface of described head (31) and the diameter ratio of lower surface are 12:14.
4. bone cement hip prosthesis as claimed in claim 2, is characterized in that, described handle body (33) far-end (333) is provided with guide head (35), and described guide head (35) is for connecting middle-device.
5. bone cement hip prosthesis as claimed in claim 2, is characterized in that, the outer surface (11) of described acetabular bone (1) direction vertical along the depression position between projection (15) and hemisphere tangent plane (13) is provided with groove (16).
6. bone cement hip prosthesis as claimed in claim 2, it is characterized in that, the hemisphere tangent plane (13) of described acetabular bone (1) stretches out and is provided with the annular anticreep parts (17) of band unfilled corner face (18), described unfilled corner face (18) be on described anticreep parts (17) one side positions near the end of hemisphere tangent plane (13) the axis direction to acetabular bone (1), do the plane that outward-dipping extension obtains.
7. bone cement hip prosthesis as claimed in claim 6, is characterized in that, described anticreep parts (17) periphery wall is provided with the first inclined plane (19);
Described the first inclined plane (19) be on periphery wall near the end of hemisphere tangent plane (13) the axis direction to acetabular bone (1), do the plane that outward-dipping extension obtains; Angle between the axis of described the first inclined plane (19) and acetabular bone (1) is 10 °.
8. bone cement hip prosthesis as claimed in claim 7, is characterized in that, the internal perisporium of described anticreep parts (17) is provided with the second inclined plane (20);
Described the second inclined plane (20) be on internal perisporium near the end of hemisphere tangent plane (13) to periphery wall direction, do the plane that outward-dipping extension obtains.
9. bone cement hip prosthesis as claimed in claim 2, is characterized in that, the neighboring of the hemisphere tangent plane (13) of described acetabular bone (1) is surrounded with tinsel.
CN201420256135.XU 2014-05-19 2014-05-19 Bone cement hip prosthesis Active CN203873917U (en)

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Application Number Priority Date Filing Date Title
CN201420256135.XU CN203873917U (en) 2014-05-19 2014-05-19 Bone cement hip prosthesis

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104997576A (en) * 2015-08-11 2015-10-28 嘉思特华剑医疗器材(天津)有限公司 Mixed knee-joint prosthesis system
CN107550604A (en) * 2017-08-04 2018-01-09 北京爱康宜诚医疗器材有限公司 Manual acetabulum and artificial hip joint
CN112414693A (en) * 2020-11-30 2021-02-26 华侨大学 Modular femoral component testing fixture with handle
CN112998914A (en) * 2021-02-22 2021-06-22 佳木斯大学 Artificial hip joint
CN113271893A (en) * 2018-12-31 2021-08-17 德普伊爱尔兰无限公司 Acetabular orthopaedic prosthesis and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104997576A (en) * 2015-08-11 2015-10-28 嘉思特华剑医疗器材(天津)有限公司 Mixed knee-joint prosthesis system
CN107550604A (en) * 2017-08-04 2018-01-09 北京爱康宜诚医疗器材有限公司 Manual acetabulum and artificial hip joint
CN107550604B (en) * 2017-08-04 2023-07-28 北京爱康宜诚医疗器材有限公司 Artificial acetabulum and artificial hip joint
CN113271893A (en) * 2018-12-31 2021-08-17 德普伊爱尔兰无限公司 Acetabular orthopaedic prosthesis and method
CN112414693A (en) * 2020-11-30 2021-02-26 华侨大学 Modular femoral component testing fixture with handle
CN112998914A (en) * 2021-02-22 2021-06-22 佳木斯大学 Artificial hip joint

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