CN111759548A - 一种人工髋关节股骨柄假体 - Google Patents
一种人工髋关节股骨柄假体 Download PDFInfo
- Publication number
- CN111759548A CN111759548A CN202010708706.9A CN202010708706A CN111759548A CN 111759548 A CN111759548 A CN 111759548A CN 202010708706 A CN202010708706 A CN 202010708706A CN 111759548 A CN111759548 A CN 111759548A
- Authority
- CN
- China
- Prior art keywords
- femoral stem
- proximal end
- femoral
- prosthesis
- proximal
- 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.)
- Granted
Links
- 210000004394 hip joint Anatomy 0.000 title claims abstract description 12
- 210000002436 femur neck Anatomy 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 5
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 5
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011378 shotcrete Substances 0.000 claims description 3
- 238000002513 implantation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 206010064516 Femoral anteversion Diseases 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 13
- 210000000988 bone and bone Anatomy 0.000 description 10
- 210000001624 hip Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 210000000689 upper leg Anatomy 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 208000005422 Foreign-Body reaction Diseases 0.000 description 2
- 210000000588 acetabulum Anatomy 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000011541 total hip replacement Methods 0.000 description 2
- 206010073767 Developmental hip dysplasia Diseases 0.000 description 1
- 206010058314 Dysplasia Diseases 0.000 description 1
- 208000007446 Hip Dislocation Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 206010031264 Osteonecrosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Images
Classifications
-
- 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
- A61F2/28—Bones
-
- 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
- A61F2/30721—Accessories
- A61F2/30749—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
-
- 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
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- 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
- A61F2/3662—Femoral shafts
-
- 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
- A61F2/28—Bones
- A61F2002/2825—Femur
-
- 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
- A61F2/28—Bones
- A61F2002/2825—Femur
- A61F2002/2828—Femoral head
-
- 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
- A61F2/28—Bones
- A61F2002/2825—Femur
- A61F2002/2832—Femoral neck
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
-
- 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
- A61F2002/30108—Shapes
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
-
- 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
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
Landscapes
- 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
本发明公开了一种人工髋关节股骨柄假体,所述股骨柄假体包括依次连接的股骨柄锥、股骨颈和股骨柄;所述股骨柄包括:一体形成的股骨柄近端、股骨柄身和股骨柄远端;所述股骨柄近端按照其横截面的圆心角的角度分为股骨柄近端内侧和股骨柄近端外侧,其中,所述股骨柄近端内侧所对应的圆心角为120°;所述股骨柄近端内侧的锥度沿所述股骨柄由近至远的方向递减;所述股骨柄近端外侧的锥度恒定不变;所述股骨柄远端为圆柱结构或锥形结构。所述人工髋关节股骨柄假体可在合并股骨前倾角变异、髓腔狭细的病例中将股骨前倾角调节到正常解剖位置,植入效果好,操作简单,易于大规模推广使用。
Description
技术领域
本发明属于人工假体置换技术领域,具体地说,涉及一种人工髋关节股骨柄假体。
背景技术
在人工全髋关节置换手术中,需要通过获得良好的髋臼及股骨的联合前倾角来达到髋关节的安全稳定活动。
在实际操作过程中,髋臼侧假体的放置需要兼顾宿主骨的覆盖。在髋臼骨折、髋臼旋转截骨术后、发育性髋臼后倾等病例中,假体大多需要偏中立甚至后倾安放。而股骨自身前倾角变异较大,尤其以髋关节发育不良的患者居多。
由此可见,在全髋关节置换术中,对股骨侧前倾角的调节存在着很大的需求。由于股骨柄与股骨髓腔形态匹配的问题,现有的单楔形或双楔形股骨柄改变前倾角的范围非常有限。
为了尽量满足股骨侧调节前倾角的需求,现在主要有以下三种实现方案:
第一,水泥型股骨柄。由于水泥柄本身无需与髓腔形态匹配,因此可以调节前倾角。
但是,水泥型股骨柄存在诸如:固定远期失败率高、术中产热可能导致骨坏死、可能产生潜在的磨损颗粒、翻修困难等弊端。因此,这种水泥型股骨柄的应用效果并不好。
第二,以Wagner cone(Zimmer)为主要代表的一体式圆锥型带棱股骨柄。这种股骨柄整体为圆锥型设计,其圆形的横截面便于以不同的前倾方向植入股骨柄。
但是,这种股骨柄圆锥型的外观在实际应用中会带来正反两方面影响:一方面,在植入过程中能够与股骨髓腔进行较好的适配和充填(fit-and-fill);而另一方面,在手术后有进一步下沉的风险。此外,在高脱位髋关节发育不良的病例中,常常需要进行粗隆下截骨;而这种股骨柄的柄长有限,因此对截骨端的抗旋转能力不足,需要使用额外的器械如钢板或将截除骨块劈开捆绑在截骨端。增加了手术的复杂性和操作难度,同时也增加了成本。
第三,组配式假体。根据组配界面位置的不同,包括颈组配假体,如:Kinectiv(Zimmer)、Profemur(Wright)等;以及袖套组配假体,如:S-rom(Depuy)等。前者通过选择不同前倾方向的颈部组件来调节前倾角;后者则可实现柄和袖套之间的自由旋转,在更大范围内调节前倾角,因此应用更广泛。
但是,无论上述哪种组配式假体,组配的交界面都会带来隐患。组配界面的微动会产生金属磨屑,导致局部异物反应;此外,两者均出现过界面断裂等机械并发症。
因此,目前急需一种应用于人工全髋置换手术中的能够不局限于股骨髓腔形态而调节前倾角的股骨柄假体。
发明内容
为了解决现有技术中存在的问题,本发明提供了一种人工髋关节股骨柄假体。
根据本发明的一个方面,提供一种人工髋关节股骨柄假体,所述股骨柄假体包括依次连接的股骨柄锥、股骨颈和股骨柄;
所述股骨柄包括:一体形成的股骨柄近端、股骨柄身和股骨柄远端;
所述股骨柄近端按照其横截面的圆心角的角度分为股骨柄近端内侧和股骨柄近端外侧,其中,所述股骨柄近端内侧所对应的圆心角为120°;
所述股骨柄近端内侧的锥度沿所述股骨柄由近至远的方向递减;
所述股骨柄近端外侧的锥度恒定不变;
所述股骨柄远端为圆柱结构或锥形结构。
根据本发明的一个具体实施方式,所述股骨柄近端内侧的锥度沿所述股骨柄由近至远的方向从10°至5°递减。
根据本发明的另一个具体实施方式,所述股骨柄近端外侧的锥度为5°。
根据本发明的又一个具体实施方式,所述股骨柄近端外侧的外表面经过喷砂处理。
根据本发明的又一个具体实施方式,在股骨柄近端外侧的外表面设置两个鳍状突起。
根据本发明的又一个具体实施方式,当所述股骨柄远端为锥形结构时,所述股骨柄远端呈2°的锥度。
根据本发明的又一个具体实施方式,所述股骨柄远端的外表面设置有凸棱。
根据本发明的又一个具体实施方式,所述股骨柄远端的尖部呈音叉形结构。
根据本发明的又一个具体实施方式,所述股骨柄近端的表面涂覆有多孔钛金属涂层、钽金属涂层或钛喷浆+羟基磷灰石涂层。
根据本发明的又一个具体实施方式,所述股骨柄近端内侧的外表面采用阶梯状微结构进行处理。
本发明提供的人工髋关节股骨柄假体采用一体成型结构,规避了组配界面带来的如柄交界面断裂,金属磨屑及局部异物反应等潜在风险;近端内侧的阶梯状微结构处理,将假体-骨界面之间的剪应力转化为压应力,提高初始稳定性;近端表面的多孔涂层具有良好的摩擦系数、孔隙率和骨诱导性,促进骨长入,提供远期稳定性。
所述股骨柄创造性地在股骨柄近端内侧设置渐变锥度区域,一方面大大降低了传统股骨柄假体整体圆锥型设计带来的下沉风险;另一方面又可以在尽量减少骨质破坏的基础上实现股骨髓腔内旋转角度的调节。更重要的是,渐变锥度区域与袖套组配假体的近端三角形袖套组件相比更偏向外侧,对近端内侧骨质破坏更少,植入更容易,且可避免出现类似于袖套在股骨近端高悬的现象。后者使肢体过度延长,带来血管神经损伤的风险。由于这种设计更便于植入髓腔,这也间接降低了进行粗隆下截骨的可能。即使必要时行粗隆下截骨,这种设计提供了足够的柄长发挥髓内钉稳定截骨处,此外,柄远端突出表面的棱可以嵌入骨质,进一步提供旋转稳定性。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更明显:
图1所示为根据本发明提供的一种人工髋关节股骨柄假体的一个具体实施方式的正视图;
图2所示为根据本发明提供的一种人工髋关节股骨柄假体的一个具体实施方式的后视图;
图3所示为根据本发明提供的一种人工髋关节股骨柄假体的一个具体实施方式的侧视图;
图4所示为图3所示的人工髋关节股骨柄假体的股骨柄近端所选取的三个位置A-A、B-B、C-C的截面示意图;
图5所示为根据本发明提供的一种人工髋关节股骨柄假体的另一个具体实施方式的结构示意图。
附图中相同或相似的附图标记代表相同或相似的部件。
具体实施方式
下文的公开提供了许多不同的实施例或例子用来实现本发明的不同结构。为了简化本发明的公开,下文中对特定例子的部件和设置进行描述。此外,本发明可以在不同例子中重复参考数字和/或字母。这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施例和/或设置之间的关系。应当注意,在附图中所图示的部件不一定按比例绘制。本发明省略了对公知组件和处理技术及工艺的描述以避免不必要地限制本发明。
参见图1~图3,本发明提供了一种人工髋关节股骨柄假体。所述股骨柄假体包括依次连接的股骨柄锥10、股骨颈20和股骨柄30。为了避免组配交界面会出现的界面微动、金属磨屑等问题,所述股骨柄锥10、股骨颈20和股骨柄30一体化形成。
所述股骨柄30包括:一体形成的股骨柄近端31、股骨柄身32和股骨柄远端33。
所述股骨柄近端31按照其横截面的圆心角的角度分为股骨柄近端内侧和股骨柄近端外侧。其中,所述股骨柄近端内侧所对应的圆心角为120°。可以理解,圆心角对应240°的即为股骨柄近端外侧。
为了促进骨生长,优选的,在所述股骨柄近端31的表面涂覆有多孔钛金属涂层、钽金属涂层或钛喷浆+羟基磷灰石涂层。为了获得最佳的骨长入效果,不同的涂层有不同的孔隙率、孔径等参数。若采用多孔钛金属涂层,则孔隙率55-70%,孔径300μm-640μm。若采用钽金属涂层,则孔隙率80%,孔径550μm。若采用钛喷浆+羟基磷灰石进行涂覆,具体的采用330μm钛+50μm羟基磷灰石,表面粗糙度在21μm-28μm之间。
进一步的,为了将假体-骨界面之间的剪应力转变为压应力,提高初始稳定性,优选的,在所述股骨柄近端31的内侧120°锥度渐变区做阶梯状微结构处理。
为了使股骨柄30更容易调节前倾角和植入髓腔,所述股骨柄近端内侧的锥度沿所述股骨柄30由近至远的方向递减。更为优选的,所述股骨柄近端内侧的锥度沿所述股骨柄30由近至远的方向从10°至5°递减。
参见图3和图4,首先在图3所示的股骨柄近端31上沿所述股骨柄30由近至远的方向选取三个截面,分别是A-A、B-B、C-C。以图4中截面A-A为例,圆心角对应120°的一侧是股骨柄近端31的内侧,另外一侧则为股骨柄近端31的外侧。截面B-B和截面C-C同理。
从图4中可以看出,不同的截面,股骨柄近端内侧的弧度不同,因此可以看出,股骨柄近端内侧的锥度是在变化的,而且是沿所述股骨柄30由近至远的方向递减的。而在不同的截面图中,股骨柄近端外侧的弧度却是相同的,即所述股骨柄近端外侧的锥度恒定不变。优选的,所述股骨柄近端外侧的锥度为5°。
上述阶梯状的微结构处理,可有效地将股骨柄30与髓腔之间的剪切力转变为压应力,提高初始稳定性,而所述股骨柄近端31的渐变锥度设计降低了传统股骨柄假体(如:Wagner cone)整体圆锥型设计带来的下沉风险。此外,所述股骨柄近端30的渐变锥度区域,相比传统的三角形袖套(如:S-rom),整***置更偏向外侧,对骨质破坏更少,不仅股骨柄假体的植入更便捷,而且其在股骨髓腔内的旋转角度也可灵活调节。此外,得益于其植入的便捷性,应用所述股骨柄相对于三角形袖套可以在股骨髓腔植入更深,避免肢体的过度延长,降低行粗隆下截骨的可能。
为了更便于植入,且进一步降低成本,可以仅在所述股骨柄近端外侧的外表面进行喷砂处理。
此外,为了进一步增加股骨柄近端30植入后的抗旋转能力,优选的,在股骨柄近端外侧的外表面设置两个鳍状突起。更为优选的,所述两个鳍状突起对称设置。
所述股骨柄远端33为圆柱结构或锥形结构。
当股骨柄远端33采用锥形结构时,优选的,所述股骨柄远端33呈2°的锥度。可以理解,股骨柄30的整体结构都是沿着股骨柄30由近至远的方向向内缩进,形成一个锥形,以便于植入操作。
优选的,所述股骨柄远端33的外表面设置有凸棱。通过这些棱与骨皮质的咬合,能够显著提高股骨柄远端33的旋转稳定性。随着凸棱个数的增多,所述股骨柄远端33的抗旋稳定性也在提高。但是过多的凸棱,会增加生产成本,因此优选的,所述凸棱的数目为8个,且均匀分布与所述股骨柄远端33的外表面。更为优选的,所述凸棱的高度在1mm-1.25mm之间,例如:1mm,1.15mm或1.25mm。
此外,为了降低股骨柄30的刚度,减少大腿疼痛的发生率,所述股骨柄远端33的尖部呈音叉形结构,即所述股骨柄远端33的尖部设置有开槽。
本发明提供的人工髋关节股骨柄假体能够与股骨髓腔形态高度匹配,前倾角可调,植入便捷、抗旋能力强、术后风险低,易于大规模推广使用。
虽然关于示例实施例及其优点已经详细说明,应当理解在不脱离本发明的精神和所附权利要求限定的保护范围的情况下,可以对这些实施例进行各种变化、替换和修改。对于其他例子,本领域的普通技术人员应当容易理解在保持本发明保护范围内的同时,工艺步骤的次序可以变化。
此外,本发明的应用范围不局限于说明书中描述的特定实施例的工艺、机构、制造、物质组成、手段、方法及步骤。从本发明的公开内容,作为本领域的普通技术人员将容易地理解,对于目前已存在或者以后即将开发出的工艺、机构、制造、物质组成、手段、方法或步骤,其中它们执行与本发明描述的对应实施例大体相同的功能或者获得大体相同的结果,依照本发明可以对它们进行应用。因此,本发明所附权利要求旨在将这些工艺、机构、制造、物质组成、手段、方法或步骤包含在其保护范围内。
Claims (10)
1.一种人工髋关节股骨柄假体,其特征在于,所述股骨柄假体包括依次连接的股骨柄锥、股骨颈和股骨柄;
所述股骨柄包括:一体形成的股骨柄近端、股骨柄身和股骨柄远端;
所述股骨柄近端按照其横截面的圆心角的角度分为股骨柄近端内侧和股骨柄近端外侧,其中,所述股骨柄近端内侧所对应的圆心角为120°;
所述股骨柄近端内侧的锥度沿所述股骨柄由近至远的方向递减;
所述股骨柄近端外侧的锥度恒定不变;
所述股骨柄远端为圆柱结构或锥形结构。
2.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄近端内侧的锥度沿所述股骨柄由近至远的方向从10°至5°递减。
3.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄近端外侧的锥度为5°。
4.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄近端外侧的外表面经过喷砂处理。
5.根据权利要求4所述的股骨柄假体,其特征在于,在股骨柄近端外侧的外表面设置两个鳍状突起。
6.根据权利要求1所述的股骨柄假体,其特征在于,当所述股骨柄远端为锥形结构时,所述股骨柄远端呈2°的锥度。
7.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄远端的外表面设置有凸棱。
8.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄远端的尖部呈音叉形结构。
9.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄近端的表面涂覆有多孔钛金属涂层、钽金属涂层或钛喷浆+羟基磷灰石涂层。
10.根据权利要求1所述的股骨柄假体,其特征在于,所述股骨柄近端内侧的外表面采用阶梯状微结构进行处理。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010708706.9A CN111759548B (zh) | 2020-07-22 | 2020-07-22 | 一种人工髋关节股骨柄假体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010708706.9A CN111759548B (zh) | 2020-07-22 | 2020-07-22 | 一种人工髋关节股骨柄假体 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111759548A true CN111759548A (zh) | 2020-10-13 |
CN111759548B CN111759548B (zh) | 2023-11-03 |
Family
ID=72727274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010708706.9A Active CN111759548B (zh) | 2020-07-22 | 2020-07-22 | 一种人工髋关节股骨柄假体 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111759548B (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112245071A (zh) * | 2020-11-10 | 2021-01-22 | 北京积水潭医院 | 股骨峡部成型多孔钢板*** |
CN112472369A (zh) * | 2020-12-19 | 2021-03-12 | 经纬医疗器材制造(深圳)有限公司 | 一种三维股骨柄及制造方法 |
CN112494178A (zh) * | 2020-12-12 | 2021-03-16 | 北京中安泰华科技有限公司 | 一种膨胀式固定型股骨柄假体 |
CN112545711A (zh) * | 2020-11-03 | 2021-03-26 | 武汉联影智融医疗科技有限公司 | 股骨柄假体及其制备方法 |
CN116138932A (zh) * | 2023-04-21 | 2023-05-23 | 北京纳通医疗科技控股有限公司 | 股骨柄和具有其的髋关节假体 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5147408A (en) * | 1988-10-07 | 1992-09-15 | Pfizer Hospital Products Group, Inc. | Prosthetic device and method of implantation |
EP0700670A1 (en) * | 1994-08-11 | 1996-03-13 | Charles Crawshaw | Femoral component for hip joint replacement |
EP1464304A2 (en) * | 2003-04-01 | 2004-10-06 | IQL Industria Quirurgicas de Levante S.L. | Prosthetic device |
CN104434343A (zh) * | 2014-12-29 | 2015-03-25 | 北京市春立正达医疗器械股份有限公司 | 股骨柄假体 |
CN204655196U (zh) * | 2015-03-17 | 2015-09-23 | 刘宏伟 | 一种组配型股骨假体 |
CN204734582U (zh) * | 2015-01-30 | 2015-11-04 | 经纬医疗器材制造(深圳)有限公司 | 内侧横截面的两条边线成夹角的股骨柄 |
CN110327138A (zh) * | 2019-07-19 | 2019-10-15 | 天津正天医疗器械有限公司 | 一种股骨柄假体 |
-
2020
- 2020-07-22 CN CN202010708706.9A patent/CN111759548B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5147408A (en) * | 1988-10-07 | 1992-09-15 | Pfizer Hospital Products Group, Inc. | Prosthetic device and method of implantation |
EP0700670A1 (en) * | 1994-08-11 | 1996-03-13 | Charles Crawshaw | Femoral component for hip joint replacement |
EP1464304A2 (en) * | 2003-04-01 | 2004-10-06 | IQL Industria Quirurgicas de Levante S.L. | Prosthetic device |
CN104434343A (zh) * | 2014-12-29 | 2015-03-25 | 北京市春立正达医疗器械股份有限公司 | 股骨柄假体 |
CN204734582U (zh) * | 2015-01-30 | 2015-11-04 | 经纬医疗器材制造(深圳)有限公司 | 内侧横截面的两条边线成夹角的股骨柄 |
CN204655196U (zh) * | 2015-03-17 | 2015-09-23 | 刘宏伟 | 一种组配型股骨假体 |
CN110327138A (zh) * | 2019-07-19 | 2019-10-15 | 天津正天医疗器械有限公司 | 一种股骨柄假体 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112545711A (zh) * | 2020-11-03 | 2021-03-26 | 武汉联影智融医疗科技有限公司 | 股骨柄假体及其制备方法 |
CN112245071A (zh) * | 2020-11-10 | 2021-01-22 | 北京积水潭医院 | 股骨峡部成型多孔钢板*** |
CN112494178A (zh) * | 2020-12-12 | 2021-03-16 | 北京中安泰华科技有限公司 | 一种膨胀式固定型股骨柄假体 |
CN112472369A (zh) * | 2020-12-19 | 2021-03-12 | 经纬医疗器材制造(深圳)有限公司 | 一种三维股骨柄及制造方法 |
CN116138932A (zh) * | 2023-04-21 | 2023-05-23 | 北京纳通医疗科技控股有限公司 | 股骨柄和具有其的髋关节假体 |
CN116138932B (zh) * | 2023-04-21 | 2023-08-04 | 北京纳通医疗科技控股有限公司 | 股骨柄和具有其的髋关节假体 |
Also Published As
Publication number | Publication date |
---|---|
CN111759548B (zh) | 2023-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111759548B (zh) | 一种人工髋关节股骨柄假体 | |
EP1138284B1 (en) | Femoral hip prothesis | |
EP1858452B1 (en) | Long sleeves for use with stems | |
EP1138283B1 (en) | Femoral hip prosthesis | |
ZWEYMÜLLER et al. | Biologic fixation of a press-fit titanium hip joint endoprosthesis. | |
JP5095395B2 (ja) | 溝付き髄内ステム | |
US6652591B2 (en) | Prosthesis with feature aligned to trabeculae | |
US8992627B2 (en) | Interlocking reverese hip and revision prosthesis and method | |
CN108210128A (zh) | 一种人工α股骨柄假体 | |
JP2002291778A5 (zh) | ||
US20230397993A1 (en) | Prostheses | |
CN104921844A (zh) | 一种生物型髋关节 | |
AU784186B2 (en) | Prosthesis with feature aligned to trabeculae | |
Malhotra et al. | 1 Evolution and Design Principles of Hip Arthroplasty | |
Gottsauner-Wolf et al. | Histomorphological Findings in Different Cementless Anchored Humerus Prostheses | |
AU2012200741A1 (en) | Fluted intramedullary stem |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |