CN116898638A - 一种腕掌关节重建假体 - Google Patents
一种腕掌关节重建假体 Download PDFInfo
- Publication number
- CN116898638A CN116898638A CN202310753450.7A CN202310753450A CN116898638A CN 116898638 A CN116898638 A CN 116898638A CN 202310753450 A CN202310753450 A CN 202310753450A CN 116898638 A CN116898638 A CN 116898638A
- Authority
- CN
- China
- Prior art keywords
- prosthesis
- socket
- shaped
- nest
- metacarpal
- 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.)
- Pending
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 20
- 210000001713 trapezium bone Anatomy 0.000 claims abstract description 16
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 210000000511 carpometacarpal joint Anatomy 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000003592 biomimetic effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 210000004262 dental pulp cavity Anatomy 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 7
- 230000008407 joint function Effects 0.000 abstract description 3
- 210000000236 metacarpal bone Anatomy 0.000 description 7
- 241000826860 Trapezium Species 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 201000008482 osteoarthritis Diseases 0.000 description 6
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000003813 thumb Anatomy 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 3
- 206010003246 arthritis Diseases 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 208000016285 Movement disease Diseases 0.000 description 1
- 208000008558 Osteophyte Diseases 0.000 description 1
- 206010048873 Traumatic arthritis Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 201000010934 exostosis Diseases 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 230000002757 inflammatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000008467 tissue growth Effects 0.000 description 1
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
-
- 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
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
-
- 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
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
-
- 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
-
- 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
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
-
- 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
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30891—Plurality of protrusions
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
-
- 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
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
- A61F2002/4256—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints
- A61F2002/4258—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints for trapezo-metacarpal joints of thumbs
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Prostheses (AREA)
Abstract
本发明公开一种腕掌关节重建假体,涉及重建假体技术领域,包括:球窝式关节联接结构:固定于大多角骨的窝状假体和用于髓内接合的球柄状假体;窝状假体的外表面为第一多孔结构或仿生骨小梁结构;窝状假体的内表面光滑;球柄状假体为球头部、颈部和柄部依次联接形成的一体结构,球头部与窝状结构相匹配,球头部与窝状假体内表面相接触;柄部与掌骨髓腔相匹配;柄部的外表面为第二多孔结构或仿生骨小梁结构。窝状假体通过表面的刺状结构和边缘的翼状钉孔固定于大多角骨上,实现初期稳定性。窝状假体的外表面采用多孔结构或仿生骨小梁结构,其能够促进骨长入,保证假体的远期稳定性。设计更加贴近生理结构,可以有效地恢复患者的关节功能。
Description
技术领域
本发明涉及重建假体技术领域,尤其是涉及一种诊断腕掌关节骨关节炎或其他疾病造成该关节毁损拟行关节置换术的腕掌关节重建假体。
背景技术
腕掌关节在手的复杂运动中起到了关键的作用,尤其是拇指的腕掌关节,该关节是由第一掌骨与大多角骨构成,彼此构成一个扭曲的鞍状关节,在运动过程中,掌骨相对于大多角骨进行屈伸、内收外展、内旋外旋等复杂的运动,在关节背侧韧带的作用下,在抓握时常会承受较大的压力,是手部活动量最大的关节。正是因为其解剖结构和运动都很复杂,导致拇指的腕掌关节骨关节炎的发病率非常高。
需要拇指腕掌关节假体植入的疾病有:1、腕掌关节的非炎症性退行性拇指腕掌关节疾病,包括骨关节炎、创伤后关节炎等。2、类风湿性关节炎。3、其他手段治疗失败的患者。其特征为腕掌关节的不同程度的疼痛、肿胀、僵硬和运动障碍。该疾病可以影响任何年龄段的人,但最常见于中年和老年人,女性发病率比男性高。腕掌关节骨关节炎主要是由于长时间的关节疲劳、过度使用或由于其他原因导致的磨损和损耗引起。
腕掌关节骨关节炎的治疗方法包括药物治疗、物理治疗、手术治疗等。当保守治疗无法有效缓解疼痛,亦无法进一步控制腕掌退化性关节炎的状况时,通常需要进行手术治疗。目前治疗腕掌关节关节炎主要是通过关节融合术或关节软骨切除肌腱填塞成形术。关节融合术会导致关节功能丧失,附近的关节可能会因为需要承受更多的压力和负荷,而出现过度磨损和生长异常。关节软骨切除肌腱填塞成形术术后能存在关节不稳定、疼痛复发等问题。
随着人工关节的设计及制作材料的逐渐成熟,人工关节置换已成为目前既能减轻关节炎的疼痛,还能保留腕掌关节的活动及手部高度的功能。
然而,现有的腕掌关节重建假体虽然能够使患者恢复关节的正常功能,但是也存在一些缺陷。首先最常见的并发症是出现术后脱位,一般是由于手术过程中骨赘切除不全和假体位置角度不良,使用更大头部尺寸的假体可显著地减少脱位概率。其次是在假体稳定性方面,若患者骨质量较差或者置入过程中假体位置不良,容易出现早期松动。并且由于假体的材料和结构与自然关节有很大差异,因此在日常生活中可能会感觉到不适或疼痛,远期易出现假体松动。此外由于腕关节承受着大量的活动和力量,因此重建腕关节需要经常检查并确保假体在长期使用中不会出现松动或磨损。
发明内容
有鉴于此,本发明的目的是设计一种腕掌关节重建假体,既能够恢复关节的功能,又能够确保假体与骨骼融为一体,提供长期稳定的作用。
为此,本发明提供了以下技术方案:
本发明公开了一种腕掌关节重建假体,包括:球窝式关节联接结构;球窝式关节联接结构包括:固定于大多角骨的窝状假体和用于髓内接合的球柄状假体;
窝状假体的外表面为第一多孔结构或仿生骨小梁结构;窝状假体的内表面光滑;
球柄状假体为球头部、颈部和柄部依次联接形成的一体结构,球头部与窝状结构相匹配,球头部与窝状假体内表面相接触;柄部与掌骨髓腔相匹配;柄部的外表面为第二多孔结构或仿生骨小梁结构。
进一步地,窝状假体的内表面为高抛光镜面或金属镜面镀层。
进一步地,窝状假体的外表面边缘为带有螺纹孔的翼状结构;窝状假体通过螺钉穿过翼状结构的螺纹孔固定于大多角骨。
进一步地,窝状假体的外表面分布有若干个刺样结构;窝状假体通过刺样结构插入到大多角骨。
进一步地,假体的材料包括钛、钽、陶瓷或聚乙烯。
进一步地,假体的内结构为经拓扑优化出的支撑骨架。
进一步地,柄部的轮廓表面径向的向远端渐缩。
进一步地,颈部的轮廓表面径向的向近端渐缩。
进一步地,球柄状假体的角度和大小与患者的掌骨髓腔相适应。
进一步地,仿生骨小梁结构由3D打印。
本发明的优点和积极效果:本发明中的腕掌关节重建假体,其具体包括近端的窝状假体和远端的球柄状假体,所述的窝状假体通过表面的刺状结构和边缘的翼状钉孔固定于大多角骨上,实现初期稳定性。除此之外,窝状假体的外表面采用多孔结构,其能够促进骨长入,保证假体的远期稳定性。远端球柄状假体的柄部分与掌骨髓腔相匹配,彼此之间紧密压配,球状结构与上述的窝状结构内部相匹配。球状结构可在窝状结构内自由旋转运动,实现恢复关节的运动功能。这种腕掌关节重建假体设计更加贴近生理结构,可以有效地恢复患者的关节功能,进而改善生活质量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图做以简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例中通过CT三维重建出的一个角度大多角骨和第一掌骨的骨骼结构图;
图2为本发明实施例中又一个角度的大多角骨和第一掌骨的骨骼结构图;
图3为本发明实施例中一个角度的窝状假体示意图;
图4为本发明实施例中又一个角度的窝状假体示意图;
图5为本发明实施例中又一个角度的窝状假体示意图;
图6为本发明实施例中一个角度的球柄状假体示意图;
图7为本发明实施例中又一个角度的球柄状假体示意图;
图8为本发明实施例中腕掌关节重建假体与大角骨和掌骨的装配示意图;
图中,10、窝状假体;11、第一多孔结构;12、刺样结构;13、翼状结构;14、螺纹孔;15、窝状假体内表面;20、球柄状假体;21、球头部;22、柄部;23、颈部;24、第二多孔结构;25、支撑骨架;30、大多角骨;40、掌骨髓腔。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分的实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。
需要说明的是,本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
如图1~2所示,本发明实施例中一种腕掌关节重建假体为球窝式关节联接结构,包括:掌骨侧的球柄状假体20和大多角骨30侧的窝状假体10,远端球柄状假体20的柄部22与掌骨髓腔40相匹配,彼此之间紧密压配,球状结构与窝状结构内部相匹配,球状结构可在窝状结构内自由旋转运动,实现重建腕掌关节的功能。假体的材料包括钛、钽、陶瓷或聚乙烯。假体的内结构为经拓扑优化出的支撑骨架25。
如图8所示,球窝式联接结构假体采用球状结构与窝状结构相结合的设计,其旋转中心更接近生理旋转中心,球状结构可以在窝状结构内自由旋转运动,可以更好地模拟人体的运动状态,具有更灵活的运动能力。且凸面位于大多角骨30侧,更容易调整关节角度,可以提供更高的固定稳定性。
大多角骨30处将损坏的骨质切除,并使用特定大小的磨锉进行修整,使窝状假体10能够实现紧密压配与固定,同时窝状假体10在球面上分布有3个刺样结构12,边缘设计带有钉孔的翼状结构13,窝状假体10通过螺钉穿过翼状结构13的螺纹孔14固定于大多角骨30。翼状结构13可为1个或多个,其作用是便于螺钉将窝状假体10与大多角骨30进行固定,以增强其初始稳定性。
如图3~5所示,窝状假体10的外表面为第一多孔结构11或3D打印仿生骨小梁结构,有助于骨组织长入和周围软组织生长,与人体组织的相容性更好,实现长期稳定性。窝状假体10的内表面15为高抛光镜面或金属镜面镀层,以减小其摩擦系数,可以减少磨损和摩擦,延长假体的使用寿命。
如图6、图7所示,球柄状假体20分为球头部21、颈部23与柄部22,球头部21与窝状结构相匹配,柄部22与掌骨髓腔40相匹配,并且轮廓表面径向的向远端渐缩,并依据患者的掌骨髓腔40设计假体角度及大小,保证其稳定压配。球柄状假体20的球头部21为高抛光镜面或金属镜面镀层,以减小其摩擦系数。球柄状假体20的柄部22的外形与掌骨髓腔40相同,彼此可以紧密压配,获得良好的初始稳定性,其颈部23轮廓表面径向的向近端渐缩,并和球头部21及柄部22是一体成型。球柄状假体20柄部22的结构为第二多孔结构24或3D打印仿骨小梁结构,以利于骨长入,提供长期稳定性。
上述实施例中的腕掌关节重建假体,具体包括近端的窝状假体和远端的球柄状假体,窝状假体通过表面的刺状结构和边缘的翼状钉孔固定于大多角骨上,实现初期稳定性。除此之外,窝状假体的外表面采用多孔结构或仿生骨小梁结构,其能够促进骨长入,保证假体的远期稳定性。远端球柄状假体的柄部与掌骨髓腔相匹配,彼此之间紧密压配,球状结构与上述的窝状结构内部相匹配。球状结构可在窝状结构内自由旋转运动。这种腕掌关节重建假体设计更加贴近生理结构,可以有效地恢复患者的关节功能,进而改善生活质量,达到较好的治疗效果。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (10)
1.一种腕掌关节重建假体,其特征在于,包括:球窝式关节联接结构;所述球窝式关节联接结构包括:固定于大多角骨(30)的窝状假体(10)和用于髓内接合的球柄状假体(20);
所述窝状假体(10)的外表面为第一多孔结构(11)或仿生骨小梁结构;所述窝状假体(10)的内表面(15)光滑;
所述球柄状假体(20)为球头部(21)、颈部(23)和柄部(22)依次联接形成的一体结构,所述球头部(21)与所述窝状结构相匹配,所述球头部(21)与所述窝状假体(10)的内表面(15)相接触,所述球头部(21)能够在所述窝状假体(10)内自由旋转运动;所述柄部(22)与掌骨髓腔(40)相匹配,所述柄部(22)与掌骨髓腔(40)之间紧密压配;所述柄部(22)的外表面为第二多孔结构(24)或仿生骨小梁结构。
2.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述窝状假体(10)的内表面(15)为高抛光镜面或金属镜面镀层。
3.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述窝状假体(10)的外表面边缘为带有螺纹孔(14)的翼状结构(13);所述窝状假体(10)通过螺钉穿过翼状结构(13)的螺纹孔(14)固定于所述大多角骨(30)。
4.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述窝状假体(10)的外表面分布有若干个刺样结构(12);所述窝状假体(10)通过所述刺样结构(12)插入到所述大多角骨(30)。
5.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述假体的材料包括钛、钽、陶瓷或聚乙烯。
6.根据权利要求1-5任一项所述的腕掌关节重建假体,其特征在于,所述假体的内结构为经拓扑优化出的支撑骨架(25)。
7.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述柄部(22)的轮廓表面径向的向远端渐缩。
8.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述颈部(23)的轮廓表面径向的向近端渐缩。
9.根据权利要求7或8所述的腕掌关节重建假体,其特征在于,所述球柄状假体(20)的角度和大小与患者的掌骨髓腔(40)相适应。
10.根据权利要求1所述的腕掌关节重建假体,其特征在于,所述仿生骨小梁结构由3D打印。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310753450.7A CN116898638A (zh) | 2023-06-25 | 2023-06-25 | 一种腕掌关节重建假体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310753450.7A CN116898638A (zh) | 2023-06-25 | 2023-06-25 | 一种腕掌关节重建假体 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116898638A true CN116898638A (zh) | 2023-10-20 |
Family
ID=88363867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310753450.7A Pending CN116898638A (zh) | 2023-06-25 | 2023-06-25 | 一种腕掌关节重建假体 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116898638A (zh) |
-
2023
- 2023-06-25 CN CN202310753450.7A patent/CN116898638A/zh active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6217616B1 (en) | Elbow prosthesis | |
US5645605A (en) | Implant device to replace the carpometacarpal joint of the human thumb | |
US8617251B2 (en) | Trapezium implant for thumb and method | |
JP4014644B2 (ja) | 中手骨/指節骨間関節の置換装置 | |
US6090145A (en) | Partial scaphoid implant and method of treating ailments of the scaphoid | |
JP4248968B2 (ja) | 関節の人工器官、股関節の人工器官、関節の人工器官用のベアリング | |
EP1627615A2 (en) | Modular joint replacement implant with hydrogel surface | |
AU5899994A (en) | Trapezial implant | |
GB2269752A (en) | Anatomic wrist | |
US20220062001A1 (en) | Implant for total wrist replacement | |
CN111743666A (zh) | 一种种植式指关节假体 | |
CN212382792U (zh) | 一种种植式指关节假体 | |
CN213310610U (zh) | 一种3d打印肱骨远端假体 | |
CN116898638A (zh) | 一种腕掌关节重建假体 | |
CN110353859A (zh) | 一种3d打印个性化肋骨置换假体及其制备方法 | |
CN113397767B (zh) | 一种方便置换的仿生型表面髋关节假体 | |
CN114129310A (zh) | 一种手腕部分舟骨置换假体 | |
CN217014350U (zh) | 人工掌指关节结构 | |
CN216535678U (zh) | 一种指间关节假体 | |
CN211911898U (zh) | 一种peek材料3d打印指骨假体模型 | |
CN216908262U (zh) | 一种手腕部分舟骨替换假体 | |
CN113456305B (zh) | 一种方便手术操作的仿生型表面髋关节假体 | |
CN219661998U (zh) | 一种医用人工上尺桡关节假体 | |
CN109998738A (zh) | 关节头假体组件 | |
CN216724885U (zh) | 通用型人工全肘关节假体 |
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 |