CN105943202A - 释药治疗关节术后感染的假体组件 - Google Patents

释药治疗关节术后感染的假体组件 Download PDF

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CN105943202A
CN105943202A CN201610325902.1A CN201610325902A CN105943202A CN 105943202 A CN105943202 A CN 105943202A CN 201610325902 A CN201610325902 A CN 201610325902A CN 105943202 A CN105943202 A CN 105943202A
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CN105943202B (zh
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刘念
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Jiasite Medical Equipment Tianjin Co ltd
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    • 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
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of 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
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • 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
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/02—Bones

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Abstract

本发明涉及医疗器械，尤其涉及释药治疗关节术后感染的假体组件，包括关节假体及关节柄假体，关节假体及关节柄体均设有药物容纳腔，本关节假体相对传统的间隔器具备关节假体的活动功能，可保证关节日常活动的同时，保持关节的稳定性；同时关节假体内部中空设计，设有用于容纳药物的药物容纳腔，注入后的药物缓释，从而实现对感染后关节腔进行持续给药，进而治愈感染；同时避免因常规间隔器的断裂产生大量碎屑，进而引发治疗失效。

Description

释药治疗关节术后感染的假体组件
技术领域
本发明涉及医疗器械，尤其涉及释药治疗关节术后感染的假体组件。
背景技术
全髋关节和全膝关节置换术后感染一旦发生，其后果是灾难性的，往往需要积极清创翻修控制感染。
现阶段，感染假体的标准治疗策略是两阶段翻修，即第一阶段行感染清创，去除假体，置入可临时替代关节功能的间隔组件；待感染控制后二期置入膝关节假体。
常规的间隔组件通过向骨髓腔植入骨髓泥配合硅胶实现功能，但是存在容易出现移位，严重者可出现髋关节或膝关节脱位的情况。另外，常规间隔组件易断裂，进而产生大量碎屑，引起感染导致治疗失效。
发明内容
本发明所要解决的技术问题是克服现有技术中存在的不足，提供一种防止移位、保持关节稳定且不易断裂的释药治疗关节术后感染的假体组件。
本发明是通过以下技术方案予以实现：
释药治疗关节术后感染的假体组件，其特征在于，包括关节假体及关节柄假体，关节假体及关节柄体均设有药物容纳腔。
所述关节假体为股骨头假体，所述关节柄假体为股骨柄假体，股骨柄假体与股骨头假体固定连接，股骨柄假体沿其长度方向设有股骨柄假体药物容纳腔，且股骨柄假体药物容纳腔的底部设有股骨柄假体注药释药口，股骨头假体内设有股骨头假体药物容纳腔，股骨头假体药物容纳腔在一侧设有股骨头假体注药释药口。
所述股骨柄假体下部设有用于增大摩擦力的摩擦凸点。
所述股骨柄假体和股骨头假体采用软性材料。
所述股骨柄假体和股骨头假体均采用硅胶材料。
所述关节假体包括股骨髁假体及胫骨平台垫假体，所述关节柄假体为胫骨平台假体，胫骨平台假体与股骨髁假体相互配合，胫骨平台垫假体设于胫骨平台假体与股骨髁假体之间，胫骨平台假体包括胫骨平台主体及设于胫骨平台主体下方的胫骨平台支撑部，所述胫骨平台支撑部沿其长度方向设有胫骨平台支撑部药物容纳腔，且胫骨平台支撑部药物容纳腔的底部设有胫骨平台支撑部注药释药口，胫骨平台垫假体与胫骨平台假体的接触面上设有向内凹陷的胫骨平台垫药物容纳腔。
所述胫骨平台假体、股骨髁假体及胫骨平台垫假体均采用软性材料。
所述胫骨平台假体、股骨髁假体及胫骨平台垫假体均采用硅胶材料。
本发明的有益效果是：
本关节假体相对传统的间隔器具备关节假体的活动功能，可保证关节日常活动的同时，保持关节的稳定性；同时关节假体内部中空设计，设有用于容纳药物的药物容纳腔，注入后的药物缓释，从而实现对感染后关节腔进行持续给药，进而治愈感染；同时避免因常规间隔器的断裂产生大量碎屑，进而引发治疗失效。
附图说明
图1是本发明在髋关节处的优选实施的结构示意图。
图2是本发明的股骨头柄假体的结构示意图。
图3是本发明的股骨头柄假体的内部结构示意图。
图4是本发明的股骨头假体的内部结构示意图。
图5是本发明在膝关节处的优选实施例的结构示意图。
图6是本发明的胫骨平台假体的内部结构示意图。
图7是本发明的胫骨平台垫假体一侧结构示意图。
图8是本发明的胫骨平台垫假体另一侧结构示意图。
图9是本发明的股骨髁假体一侧结构示意图。
图10是本发明的股骨髁假体另一侧结构示意图。
图中：1.股骨柄假体，2.股骨头假体，3.股骨柄假体药物容纳腔，4.股骨柄假体注药释药口，5.股骨头假体药物容纳腔，6.股骨头假体注药释药口，7.摩擦凸点，8.股骨髁假体，9.胫骨平台垫假体，10.胫骨平台假体，11.胫骨平台主体，12.胫骨平台支撑部，13.胫骨平台支撑部药物容纳腔，14.胫骨平台支撑部注药释药口，15.胫骨平台垫药物容纳腔。
具体实施方式
为了使本技术领域的技术人员更好地理解本发明的技术方案，下面结合附图和最佳实施例对本发明作进一步的详细说明。
如图所示，本发明包括包括关节假体及关节柄假体，关节假体及关节柄体均设有药物容纳腔。
本发明的在髋关节处的优选实施例为，关节假体为股骨头假体1，所述关节柄假体为股骨柄假体2，股骨柄假体与股骨头假体固定连接，股骨柄假体沿其长度方向设有股骨柄假体药物容纳腔3，且股骨柄假体药物容纳腔的底部设有股骨柄假体注药释药口4，股骨头假体内设有股骨头假体药物容纳腔5，股骨头假体药物容纳腔在一侧设有股骨头假体注药释药口6。
优选的，为保证关节假体植入后的稳定性，在股骨头柄假体下部设有用于增大摩擦力的摩擦凸点7。
优选的，股骨柄假体和股骨头假体采用软性材料制成，可以为硅胶材料。
本发明在膝关节处的优选实施例为关节假体包括股骨髁假体8及胫骨平台垫假体9，所述关节柄假体为胫骨平台假体10，胫骨平台假体与股骨髁假体相互配合，胫骨平台垫假体设于胫骨平台假体与股骨髁假体之间，胫骨平台假体包括胫骨平台主体11及设于胫骨平台主体下方的胫骨平台支撑部12，所述胫骨平台支撑部沿其长度方向设有胫骨平台支撑部药物容纳腔13，且胫骨平台支撑部药物容纳腔的底部设有胫骨平台支撑部注药释药口14，胫骨平台垫假体与胫骨平台假体的接触面上设有向内凹陷的胫骨平台垫药物容纳腔15。
优选的，胫骨平台假体、股骨髁假体及胫骨平台垫假体均采用软性材料制成，可以为硅胶材料。
填药时，使用药物注射器分别通过股骨头柄假体注药释药口向股骨头柄假体药物容纳腔注入药物、通过股骨头假体注药释药口向股骨头假体药物容纳腔中注入药物、通过胫骨平台支撑部注药释药口向胫骨平台支撑部药物容纳腔注入药物以及直接向胫骨平台垫药物容纳腔注入药物。
注入药物后的关节假体植入关节腔，药物通过注药释药口缓释，实现对患处的持续给药。
本关节假体相对传统的间隔器具备关节假体的活动功能，可保证关节日常活动的同时，保持关节的稳定性；同时关节假体内部中空设计，设有用于容纳药物的药物容纳腔，注入后的药物缓释，从而实现对感染后关节腔进行持续给药，进而治愈感染；同时避免因常规间隔器的断裂产生大量碎屑，进而引发治疗失效。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (8)

1.释药治疗关节术后感染的假体组件，其特征在于，包括关节假体及关节柄假体，关节假体及关节柄体均设有药物容纳腔。
2.根据权利要求1所述的释药治疗关节术后感染的假体组件，其特征在于，所述关节假体为股骨头假体，所述关节柄假体为股骨柄假体，股骨柄假体与股骨头假体固定连接，股骨柄假体沿其长度方向设有股骨柄假体药物容纳腔，且股骨柄假体药物容纳腔的底部设有股骨柄假体注药释药口，股骨头假体内设有股骨头假体药物容纳腔，股骨头假体药物容纳腔在一侧设有股骨头假体注药释药口。
3.根据权利要求2所述的释药治疗关节术后感染的假体组件，其特征在于，所述股骨柄假体下部设有用于增大摩擦力的摩擦凸点。
4.根据权利要求2或3中任一项所述的释药治疗关节术后感染的假体组件，其特征在于，所述股骨柄假体和股骨头假体采用软性材料。
5.根据权利要求4所述的释药治疗关节术后感染的假体组件，其特征在于，所述股骨柄假体和股骨头假体均采用硅胶材料。
6.根据权利要求1所述的释药治疗关节术后感染的假体组件，其特征在于，所述关节假体包括股骨髁假体及胫骨平台垫假体，所述关节柄假体为胫骨平台假体，胫骨平台假体与股骨髁假体相互配合，胫骨平台垫假体设于胫骨平台假体与股骨髁假体之间，胫骨平台假体包括胫骨平台主体及设于胫骨平台主体下方的胫骨平台支撑部，所述胫骨平台支撑部沿其长度方向设有胫骨平台支撑部药物容纳腔，且胫骨平台支撑部药物容纳腔的底部设有胫骨平台支撑部注药释药口，胫骨平台垫假体与胫骨平台假体的接触面上设有向内凹陷的胫骨平台垫药物容纳腔。
7.根据权利要求6所述的释药治疗关节术后感染的假体组件，其特征在于，所述胫骨平台假体、股骨髁假体及胫骨平台垫假体均采用软性材料。
8.根据权利要求7所述的释药治疗关节术后感染的假体组件，其特征在于，所述胫骨平台假体、股骨髁假体及胫骨平台垫假体均采用硅胶材料。
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