CN2217965Y - Artificial cement hip joint - Google Patents

Artificial cement hip joint Download PDF

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Publication number
CN2217965Y
CN2217965Y CN 94247257 CN94247257U CN2217965Y CN 2217965 Y CN2217965 Y CN 2217965Y CN 94247257 CN94247257 CN 94247257 CN 94247257 U CN94247257 U CN 94247257U CN 2217965 Y CN2217965 Y CN 2217965Y
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China
Prior art keywords
hip joint
artificial
cementless
acetabulum
stem
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CN 94247257
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Chinese (zh)
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马忠泰
邓泰年
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马忠泰
邓泰年
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Priority to CN 94247257 priority Critical patent/CN2217965Y/en
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Publication of CN2217965Y publication Critical patent/CN2217965Y/en

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Abstract

The utility model relates to an artificial cement hip joint, characterized in that a handle of the artificial cement hip joint presents a cone shape from upside to downside; a spline shape is arranged on the tail section of the handle; a plurality of zigzag strap slots are arranged on the top of the handle; a plurality of dovetail-shaped strap slots are arranged on the outer surface of a metal acetabulum; hydroxyapatite (the thickness is 50-100 microns) is sintered or sprayed in the zigzag area of the handle and the dovetail-shaped area of the acetabulum. The utility model makes the bone tissue around an artificial joint ossify under the guide of the artificial joint and grow into the slots on the surface of the artificial joint; the shape structure of the neonatal bone is same with the artificial joint so as to form that the neonatal bone enchases and packs the artificial joint and reach the motive of biology fastness, which can avoid the disadvantage that the hydroxyapatite chips and is absorbed.

Description

非骨水泥人工髋关节 Cementless total hip

本实用新型涉及一种医疗应用的假体,特征涉及已系列化的人工髋关节和人工半髋关节,属于医疗器械(1PCA61F2/32)。 The present invention relates to a medical prosthetic applications, characterized in involving the artificial hip joint has been serialized and semi-artificial hip joint, a medical device (1PCA61F2 / 32).

现在临床应用的人工关节分两大类,一类是骨水泥工人关节,另一关是非骨水泥人工关节。 Clinical application of artificial joints is now divided into two categories, one is a joint cement workers, other non-cemented artificial joint clearance. 对于后者,目前已有两种,一种是微孔型人工关节,另一种是羟基磷灰石型人工关节。 For the latter, there are two types of microporous artificial joints, other joints artificial hydroxyapatite. 后者是普通人工关节表面烧结或喷涂上一层羟基磷灰石。 The latter is a layer of hydroxyapatite on the surface of the sintered ordinary artificial joint or spraying. 羟基磷灰石其有导向成骨性能,促进周围骨向人工关节表面生长,并将其固定,最终骨与人工关节连成一个整体。 Hydroxyapatite which is a guide osteogenic properties, to promote the growth of bone around the artificial joint surface, and fixed thereto, and finally the bone prosthetic joint even as a whole. 这种生物学的固定方式使得人工关节有希望提供长期使用甚至终生使用。 This makes the biological fixation of artificial joints promising long-term use even last a lifetime.

但是羟基磷灰石人工髋关节依赖骨生长固定,其固定力在术后可发生变化,故有的仍发生松动。 However, the hydroxyapatite bone growth dependent artificial hip fixation, the fixing force which may vary after surgery, still occur some loosening. 大量基础研究表明人工关节表面上的羟基磷灰石厚度太厚容易碎裂,若太薄则数年后容易被缓慢吸收,这两种原因都可最终导至人工髋关节的松动。 A large number of studies show that the basis of the thickness of the hydroxyapatite surface of the prosthetic joint is too thick easily broken, easily absorbed slowly if too thin after a few years, these two causes can ultimately lead to the loosening of the artificial hip joint.

本实用新型的目的在于克服前述的两种能导致羟基磷灰石人工关节松动的原因,设计制造出一种性能更好的人工髋关节。 The present invention aims to overcome the two could cause loosening of artificial joint hydroxyapatite, better designed and manufactured one property artificial hip joint. 本新型人工关节一方面羟基磷灰石厚度适中,既不易碎裂,也不易被吸收。 This novel aspect of the artificial joint hydroxyapatite moderate thickness, both difficult to break, is not easily absorbed. 另一方面在外形上做重大改变,改形的人工关节在结构上与周围新形成的骨组织彼此交错,密切结合,即使羟基磷灰石被吸收,人工关节已被坚固固定不能松动。 On the other hand make significant changes in the shape, bone reshaping artificial joint and the surrounding structure on the newly formed alternately with each other closely, even when hydroxyapatite is absorbed, artificial joint has been firmly secured against loosening. 这是本新型人工髋关节的最大特点,也是与其他羟基磷灰石人工关节的最大不同之处。 This is the greatest feature of the new artificial hip joint, the biggest difference is hydroxyapatite with other artificial joints. 如此可以期望本新型人工髋关节能最大限度地降低该类人工髋关节的松动率,提高疗效,以取代现有的人工髋关节。 Thus it may be desirable according to the present novel prosthetic hip which minimizes the loosening of hip replacements such, improve efficacy, to replace the existing artificial hip joint.

根据本实用新型:对于人工髋关节柄,从上向下呈一定锥度——由宽变窄,由厚变薄;柄尾部有个花键,柄上部有若干条锯齿带沟,并烧结或喷涂50—100微米厚度的羟基磷灰石。 According to the present invention: for artificial hip joint stem, the form must taper down from - a narrowed width, a thin thickness; tail shank has a splined upper shank contain several toothed belt groove, sintering or spraying and 50-100 micron thickness hydroxy apatite.

对于金属髋臼,其外表面有若干条燕尾带沟,并烧结或喷涂50—100微米厚度的羟基磷灰石。 For acetabular metal, the outer surface of the dovetail grooved several pieces, or sprayed and sintered hydroxyapatite 50-100 microns thickness. 其内面若干个螺钉孔内也烧结或喷涂同样厚度的羟基磷灰石。 Its inner surface a plurality of screw hole or also sintered hydroxyapatite coating of the same thickness.

由于采用了上述技术方案,使用实用新型具有以下突出优点。 By adopting the technical solution, using the invention has the following outstanding advantages.

(1)锥形人工髋关节柄有利于承重;(2)金属髋臼外表面的若干条交错燕尾形带沟,螺钉孔及柄的锯齿形带沟增加了羟基磷灰石的面积和诱导成骨能力,新骨长入沟槽、螺钉孔内,将牢牢镶嵌固定人工关节;(3)烧结或喷涂的羟基磷灰石在锯齿形、燕尾形带沟及螺钉孔内壁,厚度为50—100微米,此厚度为最佳厚度,有导向成骨作用。 (1) a tapered prosthetic hip stem bearing facilitate; (2) a plurality of dovetail-shaped cross section of the outer surface of a metal acetabular hip grooved screw holes and serrated grooved shank increasing the area of ​​the hydroxyapatite and induce bone formation, new bone ingrowth into the groove, a screw hole, the artificial joint is fixed firmly set; (3) a sintered or sprayed hydroxyapatite serrated dovetail groove and a screw hole with an inner wall and a thickness of 50 100 [mu] m, this thickness is optimum thickness, a guide osteogenesis. 又不易碎裂,也不显松动。 And difficult to break, not significant loosening.

(4)柄尾部的花键,使柄插股骨髓腔时能确保在中央位置,并能防止柄的轴向旋转。 (4) splined end of the shank, so that to ensure that in a central location, and to prevent axial rotation of the shank when the shank is inserted in the femoral canal.

由此,本发明的非骨水泥人工髋关,更符合于生物力学原理,并能最大限度降低其松动率。 Thus, cementless artificial hip present invention, more in line with the principles of biomechanics, and to minimize its loosening.

以下结合附图对于本实用新型作进一步说明:图1是本实用新型非骨水泥人工髋关节一个实施例的纵剖面构造图。 Further described below with reference made to the present invention: FIG. 1 is a cementless present invention a hip joint longitudinal sectional view of an embodiment configuration.

图2是图1的A向视图。 FIG 2 is a view A of FIG. 1.

图3是图2的局部放大视图。 FIG. 3 is a partial enlarged view of Figure 2.

图4是本实用新型非风水泥人工髋关节的人工髋关节柄的结构示意图。 FIG 4 is a structural diagram of the present invention the non-wind artificial hip joint cement artificial hip stem.

参照图1,本实用新型非骨水泥人工髋关节主要由金属髋臼(1)、塑料臼(2)、螺钉(3)、球形头(4)和人工髋关节柄(5)组成。 Referring to FIG. 1, the present invention cementless total hip acetabular mainly of a metal (1), a plastic mortar (2), screws (3), the spherical head (4) and the artificial hip joint stem (5) components.

如图所示,金属髋臼(1)其外表面有若干条燕尾带沟,并有若干个螺钉孔。 As shown, the metal acetabulum (1) the outer surface of the dovetail grooved several pieces, and a number of screw holes. 人工髋关节柄(5)其上部有若干条锯齿形带沟。 Artificial hip stem (5) which has an upper serrated grooved several pieces. 柄尾部有花键。 Handle the tail splines. 并在锯齿形、燕尾形、螺钉孔区域内烧结或喷涂50—100微米的羟基磷灰石。 Sintering or spraying and 50-100 microns in zigzag, dovetail, the screw bore areas hydroxyapatite. 此新颖的结构,使得安装该金属髋臼(1)骨臼(7)之间保持匹配,使得人工髋关节柄(5)与股骨(6)骨髓腔之间安装匹配,从而确保了人工髋关节的定位与固定。 This novel structure, so that the mounting of the metallic acetabulum (1) acetabular bone (7) held between the matching, so that the hip joint stem (5) and the femur (6) is mounted between the matching bone marrow cavity, thus ensuring the artificial hip joint positioning and fixing.

参照图1,它是处于使用状态中的本实用新型非骨水泥人工髋关节。 Referring to FIG. 1, which is in use in the present invention, cementless total hip. 图中:金属髋臼(1)、螺钉(3)、球形头(4)和人工髋关节柄(5)由钛合(TC4)制成,塑料臼(2)由超高分子聚乙烯制成。 FIG: Metal acetabulum (1), screws (3), the spherical head (4) and the artificial hip joint stem (5) is made of titanium alloy (of TC4), plastic mortar (2) is made of ultrahigh molecular weight polyethylene .

参照图4,是本实用新型非骨水泥人工髋关节的人工髋关节柄的结构示意图。 Referring to FIG. 4 is a schematic diagram of the artificial hip joint structure of the present invention stem cementless artificial hip joint. 由图可知,该柄人上向下呈一定锥度——由宽变窄,由厚变薄。 The figure shows the form of the downward taper shank certain person - a narrower width, the thinner thickness. 柄尾部有个花键,柄上部有若干条(2×0.5mm)锯齿形带沟。 Tail of a splined stem, the upper stem have several pieces (2 × 0.5mm) with a zigzag groove. 新型结构使本实用新型非骨水泥人工髋关节柄插入股骨髓腔时能确保在骨髓腔的中央位置,并能承受更大的重量。 Novel structure of the present invention, cementless total hip stem inserted into the medullary canal of the femur when in a central position to ensure that the bone marrow cavity, and can withstand greater weight.

本实用新型非骨水泥人工髋关节柄的系列产品结构尺寸由表1给出,表中标记表示系列产品型。 The present invention cementless prosthetic hip stem of products structural dimensions given in Table 1, Table numerals type products. L、φ为柄的标称结构尺寸(mm)。 L, φ is the nominal handle structure size (mm).

临床使用时,金属髋臼(1)置入手术后的骨臼(7)中,拧入2—3个螺钉(3)固定在骨臼上,人工髋关节柄(5)插入股骨(6)髓腔内,有羟基磷灰石的部位即可与原骨长为一个整体。 Clinical use, the metal acetabulum (1) into their sockets (7) after surgery, screws screwed 2-3 (3) is fixed on the acetabular bone, hip joint stem (5) into the femur (6) intramedullary, there are parts of the hydroxyapatite to the original length of the bone as a whole. 而且燕尾形、锯齿形区域的羟基磷灰石在原骨长与人工假体金属髋臼(1)和人工髋关节柄(5)保持50—100微米的厚度,这是本实用新型非骨水泥人工髋关节的主要目的。 Hydroxyapatite and dovetail, serrated region remains in a thickness of 50-100 microns and the length of the original bone-metal acetabular prosthesis (1) and an artificial hip joint stem (5), which is the present invention cementless artificial the main purpose of the hip joint.

要强调指出的是,经临床证实,在燕尾形、锯齿形区域内喷涂或烧结50—100微米厚度的羟基磷灰石将获得最佳效果。 To emphasize that, clinically proven, spraying or sintering hydroxyapatite 50-100 microns thickness and obtain the best results in the dovetail-shaped, zigzag-shaped area.

要进一步强调指出的是,以上说明,并非将本实用新型局限于所说实施例,本领域的技术人员可在此基础上作出许多改型,但将不会脱离以下权利要求所限定的精神与范围。 To further emphasize that the above description, the embodiment is not limited to said embodiment of the present invention, those skilled in the art that many modifications may be based on, but not defined by the following claims departing from the spirit and range.

Claims (5)

1.一种非骨水泥人工髋关节,包括金属髋臼(1)、塑料臼(2)、螺钉(3)、球形头(4)和人工髋关节柄(5),其特征在于:在所说人工髋关节柄(5)的柄上部有若干条锯齿形条沟;金属髋臼(1)外表面有若干条交错的燕尾形条沟,内面有若干个螺钉孔,并在锯齿形、燕尾形条沟和螺钉孔内烧结或喷涂羟基磷灰石,厚度为50—100微米,这些结构以最大限度地降低非骨水泥人工髋关节的松动率。 A cementless total hip joint, the acetabulum comprising a metal (1), a plastic mortar (2), screws (3), the spherical head (4) and the artificial hip joint stem (5), characterized in that: in the He said upper stem hip joint stem (5) are several pieces of serrated grooves; metallic acetabulum (1) an outer surface of the dovetail grooves staggered several pieces, the inner surface has a plurality of screw holes and serrated dovetail and a screw-hole-shaped ditch or sintered hydroxyapatite coating thickness of 50-100 microns, these structures to minimize loosening of cementless hip joint.
2.根据权利要求1所述的非骨水泥人工髋关节,其特征在于所说在人工髋关节柄(5)的尾部有个花键,上部有若干条锯齿形条沟(2×0.5mm)。 According to claim cementless hip joint of claim 1, wherein said hip joint at the end of the shank (5) has a splined upper section has a plurality of serrated grooves (2 × 0.5mm) .
3.根据权利要求1或2所述的非骨水泥人工髋关节,其特征在于所说人工髋关节柄(5)的上部的锯齿形条沟是周圈的,与花键轴线呈90°夹角。 The cementless hip joint of claim 1 or claim 2, wherein said upper portion of the hip joint stem (5) is a zigzag circumferential ring grooves, the spline 90 ° to the axis of clamp angle.
4.根据权利要求1所述的非骨水泥人工髋关节,其特征在于所说金属髋臼(1)的外表面的燕尾形条沟是纵横交错的。 The cementless artificial hip joint according to claim 1, characterized in that the dovetail grooves of said outer surface of the metallic acetabulum (1) is a criss-cross.
5.根据权利要求1、4所述的非骨水泥人工髋关节,其特征在于所说金属髋臼(1)、螺钉(3)、球形头(4)和人工髋关节柄(5)的选材为钛合金(TC4);所说塑料臼(2)的选材为超高分子聚乙烯。 According to claim cementless hip joint of claim 4, wherein the metal of said acetabulum (1), screws (3), the spherical head (4) and the artificial hip joint stem (5) of the selection titanium alloy (of TC4); selection of said plastic mortar (2) of ultrahigh molecular weight polyethylene.
CN 94247257 1994-12-12 1994-12-12 Artificial cement hip joint CN2217965Y (en)

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CN 94247257 CN2217965Y (en) 1994-12-12 1994-12-12 Artificial cement hip joint

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CN 94247257 CN2217965Y (en) 1994-12-12 1994-12-12 Artificial cement hip joint

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102813565A (en) * 2012-08-18 2012-12-12 深圳清华大学研究院 Artificial hip joint
CN102905649A (en) * 2010-03-08 2013-01-30 Hip 创新科技有限责任公司 Interlocking reverse hip and revision prosthesis
CN103298431A (en) * 2010-08-13 2013-09-11 朴智善 Femoral lesser trochanter securing device for firmly securing the lesser trochanter and the surrounds and stably strengthening the same so as to allow artificial hip replacement surgery
CN103892941A (en) * 2012-12-26 2014-07-02 北京爱康宜诚医疗器材股份有限公司 Rolling type bipolar head
CN104093379A (en) * 2011-12-07 2014-10-08 史密夫和内修有限公司 Orthopedic implant augments
US9814582B2 (en) 2011-12-07 2017-11-14 Smith & Nephew, Inc. Orthopedic augments having recessed pockets
CN108403262A (en) * 2017-08-07 2018-08-17 北京力达康科技有限公司 Cobra type femoral stem prosthesis

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102905649A (en) * 2010-03-08 2013-01-30 Hip 创新科技有限责任公司 Interlocking reverse hip and revision prosthesis
CN102905649B (en) * 2010-03-08 2015-11-25 Hip 创新科技有限责任公司 And interlocking reverse hip prosthesis revision
CN103298431A (en) * 2010-08-13 2013-09-11 朴智善 Femoral lesser trochanter securing device for firmly securing the lesser trochanter and the surrounds and stably strengthening the same so as to allow artificial hip replacement surgery
US9707097B2 (en) 2011-12-07 2017-07-18 Smith & Nephew, Inc. Orthopedic implant augments
CN104093379A (en) * 2011-12-07 2014-10-08 史密夫和内修有限公司 Orthopedic implant augments
US9814582B2 (en) 2011-12-07 2017-11-14 Smith & Nephew, Inc. Orthopedic augments having recessed pockets
CN107595438A (en) * 2011-12-07 2018-01-19 史密夫和内修有限公司 Orthopedic implant augments
US10383744B2 (en) 2011-12-07 2019-08-20 Smith & Nephew, Inc. Orthopedic implant augments
CN102813565A (en) * 2012-08-18 2012-12-12 深圳清华大学研究院 Artificial hip joint
CN103892941A (en) * 2012-12-26 2014-07-02 北京爱康宜诚医疗器材股份有限公司 Rolling type bipolar head
CN108403262A (en) * 2017-08-07 2018-08-17 北京力达康科技有限公司 Cobra type femoral stem prosthesis

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