CN201668539U - Bone cement fixing type double-equator dislocation prevention acetabular prosthesis - Google Patents
Bone cement fixing type double-equator dislocation prevention acetabular prosthesis Download PDFInfo
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- CN201668539U CN201668539U CN2010201630104U CN201020163010U CN201668539U CN 201668539 U CN201668539 U CN 201668539U CN 2010201630104 U CN2010201630104 U CN 2010201630104U CN 201020163010 U CN201020163010 U CN 201020163010U CN 201668539 U CN201668539 U CN 201668539U
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- acetabular component
- outside surface
- equator
- spherical outside
- spherical surface
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Abstract
The utility model belongs to the technical field of a medical appliance and relates to a bone cement fixing type double-equator dislocation prevention acetabular prosthesis for replacement of a hip joint. The vertex of an outer spherical surface of the acetabular prosthesis is provided with a boss. The sphere center of an inner spherical surface of the acetabular prosthesis is arranged at the position where the sphere center of the outer spherical surface displaces for 1 to 4mm vertically toward the pole direction of the boss. The outer spherical surface and the inner spherical surface form double equators. A dislocation prevention angle formed between an equator surface of the outer spherical surface and an equator surface of the inner spherical surface on one side of an acetabular prosthesis port is more than or equal to 10 degrees. The distance from the edge of an acetabular port on the side with the dislocation prevention angle to the sphere center of the outer spherical surface is between 1 and 5mm. An inclined plane with 90 to 120 degrees of span and 5 to 20 degrees of inclination angle is cut out on the equator surface of the outer spherical surface on the other side of the acetabular prosthesis port by passing through the sphere center of the outer spherical surface and the transition between the inclined plane and the acetabular prosthesis port is smooth. The utility model adopts a double-equator structure. The surrounding size for a ball head is larger than the radius of the ball head. The surface that the acetabular prosthesis and the ball head are matched to rotate is enlarged. The position prone to dislocation still adopts a spherical surface matching mode so as to better play a role of preventing the ball head from prolapsing out of acetabular.
Description
Technical field
This utility model belongs to technical field of medical instruments, relates to a kind of bone cement fixed pattern anti-dislocation in two equator acetabular component that is used for hip replacement.
Background technology
The acetabular component of present clinical use is divided into two classes according to fixed form, and a class is to fix by bone cement and bone, is called bone cement fixed pattern prosthese; Another kind of is directly to contact with bone to fix, and is also referred to as biological fixation type prosthese.At present, the acetabular component that uses in clinical practice all has an anti-inclined-plane of dislocating.The Internal Spherical Surface of acetabular bone and the centre of sphere of spherical outside surface overlap.Internal Spherical Surface is being done the major diameter place to mortar mouth straight-line extension, and to play the effect of anti-dislocation, the angle on inclined-plane, acetabular bone rim of a cup anticreep position is 10 °.The acetabular bone of this structure is difficult to tackle the situation of patient's bone degree of containing difference, and the total hip replacement operation can only rely on staple or bone cement to reach recent stability, and lacks stability at a specified future date.Again because operation doctor's operant level is irregular not strange, can not hold setting angle requirements such as acetabular component abduction and preceding hectare fully, make the stress of artificial hip prosthesis's femur bulb depart from the theoretical centre of sphere of acetabular cup significantly like this and concentrate on the back upper limb of acetabular cup, and this position had not both had the bone containing, there is not the support of metal cup again, cause damage easily, influence the service life and the result of use of product.
Summary of the invention
The purpose of this utility model is the bone cement fixed pattern anti-dislocation in the two equator acetabular component that proposes a kind of bone degree of containing stability at a specified future date, long service life easy and simple to handle.
Technical solution of the present utility model is, the place, summit of acetabular component spherical outside surface is provided with boss, the centre of sphere of Internal Spherical Surface is arranged on the spherical outside surface centre of sphere vertically to boss limit direction displacement 1～4mm place, spherical outside surface and Internal Spherical Surface form two equator, anticreep parallactic angle 〉=10 that the equatoriat plane of acetabular component mouth one side spherical outside surface and the equatoriat plane of Internal Spherical Surface form °, the mortar mouth edge that has anticreep parallactic angle one side is far from the spherical outside surface centre of sphere 1～5mm; It is 90 °～120 ° that the centre of sphere that the equatoriat plane of acetabular component mouth opposite side spherical outside surface is crossed spherical outside surface cuts out span, and the angle of inclination is 5 °～20 ° inclined-plane, and with acetabular component mouth rounding off; The acetabular component spherical outside surface is apart from acetabular component mouth 5～15mm place 6～10 flanges that exceed spherical outside surface 1～2.5mm that are uniformly distributed along the circumference, and the acetabular component spherical outside surface is provided with the groove that is parallel to the spherical outside surface maximum gauge.
The height of the boss at the place, summit of described acetabular component spherical outside surface is 1～2.5mm.
1～5 of the quantity of the described groove that is parallel to the spherical outside surface maximum gauge, the degree of depth 0.5～2mm, width 0.5～3mm.
Stainless steel silk is arranged as the ring that develops on the spherical outside surface of acetabular component mouth.
Diameter 2mm is arranged, the hole of dark 2～5mm on the end face of acetabular component mouth.
Advantage that the utlity model has and beneficial effect, this utility model adopts the structure in two equator, to the encirclement size of bulb greater than its radius, the surface of the two rotation that matches is strengthened, in the part of easily dislocating still is that sphere cooperates, therefore angle [alpha] 〉=10 of anti-dislocation ° can play preventing that bulb from deviating from the effect of acetabular bone better.The spherical outside surface of acetabular component exceeds rounding off between flange itself and the acetabular component of spherical outside surface apart from acetabular component mouth place, do not hinder flowing of bone cement in clinical operation, can guarantee that it fills up stationary plane.Boss in the design of acetabular component spherical outside surface place, play jointly with the flange that is uniformly distributed along the circumference acetabular component surrounding bone cement thickness is acted on uniformly, thereby in the stressed active procedure of patient, make the stressed of bone cement evenly strengthen the fixed stability of bone cement, prolong the service life of prosthese.The design of acetabular component spherical outside surface is parallel to the groove of maximum gauge, can strengthen and the bonded area of bone cement, becomes shearing force simultaneously and is pulling force and pressure, has strengthened the constant intensity of mortar body and bone cement, has improved fixed effect.Because the material of acetabular component mortar body is a ultra-high molecular weight polyethylene, under X-ray, do not develop, therefore outside the mortar mouth of acetabular component, inlay stainless steel silk, as the ring that develops, develop to judge the installation site of acetabular component in the back that is used to perform the operation.Hole on the acetabular component mortar mouth end face is used for the clinical operation process and matches with operating theater instruments is installed, and controlling acetabular bone, and is installed to human body acetabular bone position.The inclined-plane cutting at acetabular component mortar mouth place has enlarged the range of activity in acetabular bone after femoral hip stem, bulb are installed, that is has enlarged the range of activity of patient's shank.
The spherical outside surface diameter of the acetabular component that this utility model relates to can design according to patient's build is different, and the Internal Spherical Surface diameter can be according to the diameter design of bulb with matching.
Description of drawings
Fig. 1 is a construction profile 3 dimensional drawing of the present utility model;
Fig. 2 is this utility model polycrystalline substance sketch map;
Fig. 3 is the longitudinal sectional view of Fig. 1;
Fig. 4 is this utility model user mode sketch map.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is elaborated.
Referring to Fig. 1, the place, summit of acetabular component spherical outside surface is provided with boss 6, the height of boss 6 is 1～2.5mm, the centre of sphere 3 of Internal Spherical Surface is arranged on the spherical outside surface centre of sphere 2 vertically to boss 6 limits 4 direction displacements 1～4mm place, the inside and outside centre of sphere is not overlapped, and Internal Spherical Surface forms " the two equator " that does not overlap with the maximum gauge of spherical outside surface.Internal Spherical Surface is extended naturally, and greater than its radius, surface of the two rotation that matches is strengthened to the encirclement size of bulb, still is the sphere cooperation in the easy dislocation part of acetabular component.The anticreep parallactic angle α that the equatoriat plane of acetabular component mouth one side spherical outside surface and the equatoriat plane of Internal Spherical Surface form 〉=10 ° has the mortar mouth daylight opening DLO spherical outside surface centre of sphere 1～5mm of anticreep parallactic angle one side; Therefore can play better and prevent that bulb from deviating from the effect of acetabular bone.It is 90 °～120 ° that the centre of sphere 2 that the equatoriat plane of acetabular component mouth opposite side spherical outside surface is crossed spherical outside surface cuts out span β, and angle of inclination γ is 5 °～20 ° inclined-plane, and with acetabular component mouth rounding off; This inclined-plane has enlarged femoral hip stem, bulb is installed the range of activity of back in acetabular bone, that is has enlarged the range of activity of patient's shank, referring to Fig. 4.
The acetabular component spherical outside surface is uniformly distributed along the circumference 6～10 apart from acetabular component mouth 5～15mm place and exceeds the flange 5 of spherical outside surface 1～2.5mm, be uniformly distributed along the circumference, rounding off between itself and the mortar body does not hinder flowing of bone cement in clinical operation, can guarantee that it fills up stationary plane.The acetabular component spherical outside surface is provided with the groove 7 that is parallel to the spherical outside surface maximum gauge, 1～5 of the quantity of groove 7, the degree of depth 0.5～2mm, width 0.5～3mm.Stainless steel silk 8 is arranged as the ring that develops on the spherical outside surface of acetabular component mouth.Diameter 2mm is arranged on the end face of acetabular component mouth, and the hole 9 of dark 2～5mm is used for the clinical operation process and matches with operating theater instruments is installed, and controlling acetabular bone, and is installed to human body acetabular bone position.
Claims (5)
1. the dislocation acetabular component is prevented in the two equator of bone cement fixed pattern, it is characterized in that: the place, summit of acetabular component spherical outside surface is provided with boss (6), the centre of sphere of Internal Spherical Surface (3) is arranged on the spherical outside surface centre of sphere (2) vertically to boss (6) limit (4) direction displacement 1～4mm place, spherical outside surface and Internal Spherical Surface form two equator, the anticreep parallactic angle (α) 〉=10 that the equatoriat plane of one side spherical outside surface of acetabular component mouth and the equatoriat plane of Internal Spherical Surface form °, the mortar mouth edge that has anticreep parallactic angle one side is far from the spherical outside surface centre of sphere 1～5mm; It is 90 °～120 ° that the centre of sphere (2) that the equatoriat plane of acetabular component mouth opposite side spherical outside surface is crossed spherical outside surface cuts out span (β), and angle of inclination (γ) is 5 °～20 ° inclined-plane, and with acetabular component mouth rounding off; The flange (5) that the acetabular component spherical outside surface is uniformly distributed along the circumference 6～10 and exceeds spherical outside surface 1～2.5mm apart from acetabular component mouth 5～15mm place, acetabular component spherical outside surface are provided with the groove (7) that is parallel to the spherical outside surface maximum gauge.
2. the bone cement fixed pattern according to claim 1 anti-dislocation in two equator acetabular component is characterized in that the height of the boss (6) at the place, summit of described acetabular component spherical outside surface is 1～2.5mm.
3. the anti-dislocation in the two equator of bone cement fixed pattern according to claim 1 acetabular component is characterized in that, 1～5 of the quantity of the described groove (7) that is parallel to the spherical outside surface maximum gauge, the degree of depth 0.5～2mm, width 0.5～3mm.
4. the bone cement fixed pattern according to claim 1 anti-dislocation in two equator acetabular component is characterized in that stainless steel silk (8) being arranged as the ring that develops on the spherical outside surface of acetabular component mouth.
5. the bone cement fixed pattern according to claim 1 anti-dislocation in two equator acetabular component is characterized in that diameter 2mm is arranged on the end face of acetabular component mouth, the hole of dark 2～5mm (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201630104U CN201668539U (en) | 2010-04-20 | 2010-04-20 | Bone cement fixing type double-equator dislocation prevention acetabular prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201630104U CN201668539U (en) | 2010-04-20 | 2010-04-20 | Bone cement fixing type double-equator dislocation prevention acetabular prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201668539U true CN201668539U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201630104U Expired - Lifetime CN201668539U (en) | 2010-04-20 | 2010-04-20 | Bone cement fixing type double-equator dislocation prevention acetabular prosthesis |
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| CN (1) | CN201668539U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169550A (en) * | 2013-04-15 | 2013-06-26 | 北京市春立正达医疗器械股份有限公司 | Improved acetabulum cup |
| CN104688389A (en) * | 2015-03-16 | 2015-06-10 | 北京固圣生物科技有限公司 | Dislocation prevention acetabular prosthesis |
| CN107198595A (en) * | 2017-06-01 | 2017-09-26 | 成都贝施美生物科技有限公司 | The hip prosthesis that a kind of anti-acetabular bone comes off |
| CN107638233A (en) * | 2017-10-27 | 2018-01-30 | 北京大学国际医院 | The anti-dislocation hip prosthesis and its manufacture method of a kind of 3D printing femoral head |
| CN109157308A (en) * | 2011-12-07 | 2019-01-08 | 史密夫和内修有限公司 | The plastic surgery reinforcer of pit with recess |
| US11344432B2 (en) | 2011-12-07 | 2022-05-31 | Smith & Nephew, Inc. | Orthopedic implant augments |
-
2010
- 2010-04-20 CN CN2010201630104U patent/CN201668539U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157308A (en) * | 2011-12-07 | 2019-01-08 | 史密夫和内修有限公司 | The plastic surgery reinforcer of pit with recess |
| CN109157308B (en) * | 2011-12-07 | 2021-08-20 | 史密夫和内修有限公司 | Orthopedic augment with recessed pocket |
| US11135067B2 (en) | 2011-12-07 | 2021-10-05 | Smith & Nephew, Inc. | Orthopedic augments having recessed pockets |
| US11344432B2 (en) | 2011-12-07 | 2022-05-31 | Smith & Nephew, Inc. | Orthopedic implant augments |
| CN103169550A (en) * | 2013-04-15 | 2013-06-26 | 北京市春立正达医疗器械股份有限公司 | Improved acetabulum cup |
| CN103169550B (en) * | 2013-04-15 | 2016-03-30 | 北京市春立正达医疗器械股份有限公司 | A kind of acetabular cup of improvement |
| CN104688389A (en) * | 2015-03-16 | 2015-06-10 | 北京固圣生物科技有限公司 | Dislocation prevention acetabular prosthesis |
| CN107198595A (en) * | 2017-06-01 | 2017-09-26 | 成都贝施美生物科技有限公司 | The hip prosthesis that a kind of anti-acetabular bone comes off |
| CN107638233A (en) * | 2017-10-27 | 2018-01-30 | 北京大学国际医院 | The anti-dislocation hip prosthesis and its manufacture method of a kind of 3D printing femoral head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING YOUCAI JINGHANG BIOLOGICAL TECHNOLOGY CO., Free format text: FORMER OWNER: BEIJING BAIMU AERONAUTIC MATERIAL HIGH-TECHNOLOGY CO., LTD. Effective date: 20150114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150114 Address after: 100095 Beijing city Haidian District Yongxiang Road No. 5 Building 1 layer 203, 204 room 2 Patentee after: BEIJING JINGHANG BIOTECH CO., LTD. Address before: 100095 box 63, box 81, Beijing Patentee before: Beijing Baimu Aeronautic Material High-Technology Co., Ltd. Effective date of registration: 20150114 Address after: 100095 Beijing city Haidian District Yongxiang Road No. 5 Building 1 layer 203, 204 room 2 Patentee after: BEIJING JINGHANG BIOTECH CO., LTD. Address before: 100095 box 63, box 81, Beijing Patentee before: Beijing Baimu Aeronautic Material High-Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |
|
| CX01 | Expiry of patent term |