WO2021142688A1 - 一种用于膝关节置换后感染的间隔引流装置 - Google Patents

一种用于膝关节置换后感染的间隔引流装置 Download PDF

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Publication number
WO2021142688A1
WO2021142688A1 PCT/CN2020/072372 CN2020072372W WO2021142688A1 WO 2021142688 A1 WO2021142688 A1 WO 2021142688A1 CN 2020072372 W CN2020072372 W CN 2020072372W WO 2021142688 A1 WO2021142688 A1 WO 2021142688A1
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femur
cavity
infection
knee joint
tibial base
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PCT/CN2020/072372
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English (en)
French (fr)
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刘斌
季卫平
王波
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丽水市人民医院
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Publication of WO2021142688A1 publication Critical patent/WO2021142688A1/zh

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    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • 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

Definitions

  • the present invention relates to the technical field of knee joint replacement, in particular to an interval drainage device for infection after knee joint replacement.
  • Periprosthesis infection (PJI) after artificial joint replacement is the most serious complication after artificial knee replacement. It not only causes physical and mental damage to patients, but also expensive treatment costs, but also causes serious economic burdens on patients' families and society.
  • PJI Periprosthesis infection
  • susceptibility factors such as advanced age, preoperative antibiotics, Staphylococcus aureus and fungal infections, cleansing of the skin in the operation area, prolonged operation time, drainage, smoking, weight, etc., and during the operation Think about it all. No matter how good the preoperative prevention is, the infection around the prosthesis cannot be completely eliminated.
  • the current treatment method is: first remove the original prosthesis and thoroughly debride the wound, and use the hand-made antibiotic-containing bone cement block as a temporary knee joint blocker to be placed in the joint for disinfection, and the infection will be controlled. Later, a new artificial knee joint prosthesis was placed again.
  • the use of such a hand-made bone cement block as a temporary knee joint spacer has a long production time and cannot make the joint move.
  • the present invention aims to solve the above-mentioned problems in the prior art and provide a septal drainage device for infection after knee replacement.
  • the device has a reasonable structure design, simple use, and can maintain long-term continuity on the joints during use. Anti-infective treatment, and the joint can move after the device is installed, so as to avoid atrophy of the soft tissue around the knee joint.
  • this kind of spacer drainage device for infection after knee replacement includes femur and tibia base, the femur and tibia base are connected in an articulated manner, and the inner side of the femur is provided with a thighbone.
  • a cavity, the right end of the femur is provided with a first channel hole connected to the first cavity, the inner side of the first channel hole is sealed and connected with a first delivery tube, and a plurality of holes are opened on the posterior plane of the femur
  • the first water outlet hole connected with the first cavity, the inner side of the tibial base is provided with a second cavity, the right end of the tibial base is provided with a second channel hole connected with the second cavity, so
  • the inner side of the second passage hole is sealedly connected with a second delivery tube, and a plurality of second water outlet holes connected to the second cavity are opened on the lower end plane of the tibial base, and are respectively opened on the femur and tibia base.
  • the first cavity and the second cavity on the upper part, the antibiotic is delivered into the cavity through the first delivery tube and the second delivery tube, and then the antibiotic is sent from the femur and tibia through the first channel hole and the second channel hole respectively.
  • the seat sprays out, so that the antibiotics come into contact with the patient's joints, thereby achieving the functions of disinfection and prevention of infection.
  • a first diffusion layer covering the outside of the first water outlet hole is fixedly connected to the posterior plane of the femur, and a first diffusion layer is provided so that the antibiotics flowing out of the femur can be uniformly absorbed by the first diffusion layer, thereby The antibiotics can be evenly applied to the patient's joints, so that the disinfection effect of the joints is better.
  • the lower end of the tibial base is fixedly connected with a second diffusion layer covering the outside of the second water outlet hole, and a second diffusion layer is provided so that the antibiotics flowing out from the tibial base can be uniformly absorbed by the second diffusion layer, thereby The antibiotics can be evenly applied to the patient's joints, so that the disinfection effect of the joints is better.
  • a limit slot is opened at the center of the front face of the femur, and the center of the upper end of the tibia base is provided with a limit part located in the limit slot, and a limit slot and a limit part are provided to simulate the connection of the human knee joint , To prevent the femur from detaching from the tibia base during movement.
  • first delivery tube and the second delivery tube are equipped with antibiotics, through the first delivery tube and the second delivery tube, antibiotics can be delivered to the femur and tibia base at any time, so as not to remove the femur and tibia base Disinfecting the patient's joints reduces the workload of the staff.
  • the femur and tibia bases are fixed at the joint ends with bone cement.
  • the circumferences of the femur and tibia base are chamfered and chamfered to avoid damage to the muscles and skin of the patient’s joints when the femur and tibia base are moved.
  • the first water outlet hole is gradually increased from bottom to top, and the first water outlet hole is gradually increased from bottom to top, so as to prevent antibiotics from immediately flowing out of the first outlet hole at the lower end when antibiotics are injected.
  • the knee joint that is in contact with the first water outlet at the upper end cannot be disinfected with antibiotics.
  • the inner side of the middle end of the limiting groove is fixedly connected with the rubber button part connected with the first cavity, the inner side of the first cavity is provided with a medical sponge, and the left end of the medical sponge is provided with a rubber button located in the first cavity.
  • the squeeze piece inside the cavity, the left end of the squeeze piece is provided with a bump corresponding to the rubber button part, and is provided with a rubber button part located in the limiting groove.
  • the rubber button part is squeezed by the limit part to shrink inward, thereby driving the squeeze sheet to squeeze the medical sponge, so that the antibiotic inside the medical sponge is squeezed out, so that the patient's knee joint can be disinfected while moving Treatment to avoid the need for the device to connect the delivery tube for a long time to deliver antibiotics through the disinfection tube for disinfection.
  • the structure of the present invention is reasonable in design, simple to use, and is provided with a first cavity and a second cavity respectively opened on the base of the femur and tibia, and the antibiotics are transferred through the first delivery tube and the second delivery tube.
  • the antibiotics are sprayed from the femur and tibia bases through the first channel hole and the second channel hole respectively, so that the antibiotics are in contact with the patient's joints, and the joints can be treated for a long time during use.
  • the continuous disinfection of the device, and the joints can be moved after the device is installed, so as to avoid the atrophy of the muscles at the joints.
  • Figure 1 is a schematic diagram of the structure of the present invention
  • Figure 2 is a rear view of the femur
  • Figure 3 is a top view of the present invention.
  • Figure 4 is a bottom view of the tibia base
  • Figure 5 is a cross-sectional view of the present invention.
  • a spacer drainage device for infection after knee replacement in this embodiment includes a femur 1 and a tibial base 2.
  • the femur 1 and the tibial base 2 are connected in an articulated manner.
  • the inner side of the femur 1 is provided with a first cavity 3
  • the right end of the femur 1 is provided with a first passage hole 4 connected to the first cavity 3
  • the inner side of the first passage hole 4 is sealed with a first delivery tube 5
  • a plurality of first water outlet holes 6 connected to the first cavity 3 are opened on the posterior plane of the femur 1
  • the inner side of the tibial base 2 is provided with a second cavity 7, and the tibial base 7
  • a second channel hole 8 connected to the second cavity 7 is opened at the right end, a second delivery tube 9 is sealed and connected to the inside of the second channel hole 8, and a number of and
  • the second water outlet hole 10 connected to the second cavity 7 is provided with a first cavity 3 and a second cavity 7
  • a first diffusion layer 11 covering the outer side of the first water outlet hole 6 is fixedly connected to the posterior plane of the femur 1, and the first diffusion layer 11 is provided so that the antibiotics flowing out of the femur 1 can be first
  • the diffusion layer 11 absorbs uniformly, so that the antibiotics can be evenly applied to the patient's joints, so that the disinfection effect of the joints is better.
  • the lower end of the tibial base 2 is fixedly connected with a second diffusion layer 12 covering the outside of the second outlet hole 10, and is provided with a second diffusion layer 12 so that the antibiotics flowing out of the tibial base 2 can be
  • the second diffusion layer 12 absorbs evenly, so that the antibiotics can be evenly applied to the patient's joints, so that the disinfection effect of the joints is better.
  • a limiting groove 13 is opened at the center of the front end of the femur 1, and the center of the upper end of the tibial base 2 is provided with a limiting portion 14 located in the limiting groove 13, which is provided with a limiting groove 13 and a limiting groove 13
  • the position 14 is used to simulate the connection of the human knee joint to prevent the femur 1 from detaching from the tibial base 2 when moving.
  • the first delivery tube 5 and the second delivery tube 9 are equipped with antibiotics.
  • the first delivery tube 5 and the second delivery tube 9 can deliver antibiotics to the femur 1 and tibia base 2 at any time.
  • the femur 1 and tibia base 2 are removed, the patient's joints are disinfected, which reduces the workload of the staff.
  • the femur 1 and the tibia base 2 are fixed at the joint ends with bone cement.
  • the periphery of the femur 1 and the tibial base 2 are all treated with chamfering, so as to avoid damage to the muscles and skin of the patient's joints when the femur 1 and the tibial base 2 are moved around.
  • the first water outlet hole 6 gradually increases from bottom to top, and is provided with a first outlet hole 6 gradually increasing from bottom to top, so as to prevent the antibiotic from immediately starting from the bottom of the bottom when the antibiotic is injected.
  • a water outlet hole 6 flows out, so that the part of the knee joint in contact with the first water outlet hole 6 at the upper end cannot be exposed to antibiotics for disinfection treatment.
  • the inner side of the middle end of the limiting groove 13 is fixedly connected to the rubber button part 15 connected to the first cavity 3, and the inner side of the first cavity 3 is provided with a medical sponge 16, and the medical sponge 16
  • the left end is provided with an extruded sheet 17 located inside the first cavity 3, and the left end of the extruded sheet 17 is provided with a raised block 18 corresponding to the rubber button portion 15, and is provided with a stopper in the limiting groove 13
  • the antibiotic inside the medical sponge 16 is squeezed out, so that the patient's knee joint can be disinfected while moving, which avoids the need for the device to be connected to the delivery tube for a long time to deliver the antibiotic through the delivery tube for disinfection.
  • the present invention When the present invention is in use, only the femur 1 and tibia base 2 need to be fixed to the patient’s joints with bone cement.
  • antibiotics only need to be passed into the first delivery tube 5 and respectively.
  • the antibiotic enters the first cavity 3 and the second cavity 7 through the delivery tube, and then flows out through the first channel hole 4 and the second channel hole 8.
  • the antibiotic that flows out is covered by the first diffusion layer 11 After being absorbed by the second diffusion layer 12, the antibiotics are uniformly diffused in the diffusion layer respectively, and finally the antibiotics are applied to the patient's joints through the diffusion layer to achieve disinfection treatment.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
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Abstract

一种用于膝关节置换后感染的间隔引流装置，包括股骨(1)和胫骨基座(2)，股骨(1)与胫骨基座(2)以关节方式交互连接，股骨(1)内侧设有第一空腔(3)，股骨(1)右端开有与第一空腔(3)连接的第一通道孔(4)，第一通道孔(4)内侧密封连接有第一输送管(5)，股骨(1)后侧平面上开有若干个与第一空腔(3)连接的第一出水孔(6)，胫骨基座(2)内侧设有第二空腔(7)，胫骨基座(2)右端开有与第二空腔(7)连接的第二通道孔(8)，第二通道孔(8)内侧密封连接有第二输送管(9)，胫骨基座(2)下端平面上开有若干个与第二空腔(7)连接的第二出水孔(10)。间隔引流装置结构简单，使得对患者关节处的消毒方便，方便对关节处感染进行控制，且在安装后可以使得关节活动，避免患者关节处的肌肉萎缩，增加了再次置入人工膝关节的可能性。

Description

一种用于膝关节置换后感染的间隔引流装置 技术领域
本发明涉及膝关节置换技术领域，尤其涉及一种用于膝关节置换后感染的间隔引流装置。
背景技术
人工关节置换术后假体周围感染(PJI)是人工膝关节置换术后最严重的并发症，不仅对患者身心造成损害，且治疗费用昂贵，也给患者家庭及社会造成严重的经济负担。近年在PJI预防、诊断和治疗方面都取得了一些显著的进展。在PJI的预防方面，要重视易感因素，比如高龄、术前抗生素、金葡菌及真菌感染、术区皮肤的清洁、手术时间的延长、引流与否、吸烟、体重等，术前术中都去认真考虑。再好的术前预防都无法彻底杜绝假体周围感染的发生。一旦发生假体周围感染后，目前治疗的方法是：首先取出原来的假体彻底清创，利用手工制备的含抗生素的骨水泥块作为临时膝关节阻隔体置于关节处进行消毒，待感染控制后再次置入新的人工膝关节假体。利用这种手工制备的骨水泥块作为临时膝关节间隔物，存在制作时间长、不能使关节活动。
发明内容
本发明要解决上述现有技术存在的问题，提供一种用于膝关节置换后感染的间隔引流装置，该装置结构设计合理，使用简单，可以在使用过程中对关节处进行长时间的持续性抗感染治疗，而且该装置在安装后关节可以进行活动，从而可以避免膝关节周围软组织发生萎缩。
本发明解决其技术问题采用的技术方案：这种用于膝关节置换后感染的间隔引流装置，包括股骨和胫骨基座，股骨与胫骨基座以关节方式交互连接，所述股骨内侧设有第一空腔，所述股骨右端开有与所述第一空腔连接的第一通道孔，所述第一通道孔内侧密封连接有第一输送管，所述股骨后侧平面上开有若干个与所述第一空腔连接的第一出水孔，所述胫骨基座内侧设有第二空腔，所述胫骨基座右端开有与所述第二空腔连接的第二通道孔，所述第二通道孔内侧密封连接有第二输送管，所述胫骨基座下端平面上开有若干个与所述第二 空腔连接的第二出水孔，设有分别开在股骨和胫骨基座上的第一空腔和第二空腔，通过第一输送管和第二输送管将抗生素送入空腔中，再分别通过第一通道孔和第二通道孔将抗生素分别从股骨和胫骨基座中喷出，使得抗生素与患者的关节接触，从而实现消毒和预防感染的作用。
为了进一步完善，股骨后侧平面上固定连接有覆盖在第一出水孔外侧的第一扩散层，设有第一扩散层，使得从股骨内流出的抗生素可以被第一扩散层均匀的吸收，从而使得抗生素可以均匀的涂抹在患者的关节上，从而使得关节的消毒效果更好。
进一步完善，胫骨基座下端固定连接有覆盖在第二出水孔外侧的第二扩散层，设有第二扩散层，使得从胫骨基座内流出的抗生素可以被第二扩散层均匀的吸收，从而使得抗生素可以均匀的涂抹在患者的关节上，从而使得关节的消毒效果更好。
进一步完善，股骨前端面中心位置开有限位槽，所述胫骨基座上端中心位置设有位于限位槽内的限位部，设有限位槽和限位部，用来模拟人体膝关节的连接，避免股骨在活动时脱离胫骨基座。
进一步完善，第一输送管和第二输送管内设有抗生素，通过第一输送管和第二输送管可以随时向股骨和胫骨基座输送抗生素，从而在不取下股骨和胫骨基座的情况下对患者的关节进行消毒处理，减轻了工作人员的工作负担。
进一步完善，股骨与胫骨基座通过骨水泥固定在关节端。
进一步完善，股骨和胫骨基座的四周均通过倒角、倒边处理，避免股骨和胫骨基座四周在活动时对患者关节处的肌肉和皮肤造成伤害。
进一步完善，第一出水孔从下往上逐渐增大设置，设有从下往上逐渐增大设置的第一出水孔，避免在注入抗生素时抗生素马上从下端的第一出水孔流出，使得与上端第一出水孔接触的膝关节无法接触抗生素进行消毒处理。
进一步完善，限位槽中端内侧固定连接与所述第一空腔连接的橡胶按钮部，所述第一空腔内侧设有医用海绵，所述医用海绵的左端设有位于所述第一空腔内侧的挤压片，所述挤压片左端设有与所述橡胶按钮部对应的凸起块，设有位于限位槽内的橡胶按钮部，当股骨和胫骨基座发生相对移动时，使得橡胶按钮部受到限位部的挤压而向内收缩，从而带动挤压片挤压医用海绵，从而使得医用海绵内侧的抗生素被挤出，使得患者的膝关节在运动 的同时也可以进行消毒处理，避免该装置需要长时间的连接输送管通过消毒管输送抗生素进行消毒处理。
本发明有益的效果是：本发明结构设计合理，使用简单，设有分别开在股骨和胫骨基座上的第一空腔和第二空腔，通过第一输送管和第二输送管将抗生素送入空腔中，再分别通过第一通道孔和第二通道孔将抗生素分别从股骨和胫骨基座中喷出，使得抗生素与患者的关节接触，可以在使用过程中对关节处进行长时间的持续性消毒，而且该装置在安装后关节可以进行活动，从而可以避免关节处的肌肉发生萎缩。
附图说明
图1为本发明的结构示意图；
图2为股骨的后视图；
图3为本发明的俯视图；
图4为胫骨基座的仰视图；
图5为本发明的截面图。
附图标记说明：1、股骨，2、胫骨基座，3、第一空腔，4、第一通道孔，5、第一输送管，6、第一出水孔，7、第二空腔，8、第二通道孔，9、第二输送管，10、第二出水孔，11、一扩散层，12、第二扩散层，13、限位槽，14、限位部，15、橡胶按钮部，16、医用海绵，17、挤压片，18、凸起块。
具体实施方式
下面结合附图对本发明作进一步说明：
如图1-4所示，本实施例中一种用于膝关节置换后感染的间隔引流装置，包括股骨1和胫骨基座2，股骨1与胫骨基座2以关节方式交互连接，所述股骨1内侧设有第一空腔3，所述股骨1右端开有与所述第一空腔3连接的第一通道孔4，所述第一通道孔4内侧密封连接有第一输送管5，所述股骨1后侧平面上开有若干个与所述第一空腔3连接的第一出水孔6，所述胫骨基座2内侧设有第二空腔7，所述胫骨基座7右端开有与所述第二空腔7连接的第二通道孔8，所述第二通道孔8内侧密封连接有第二输送管9，所述胫骨基座1下端平面上开有若干个与所述第二空腔7连接的第二出水孔10，设有分别开在股骨1和胫骨基座2上的第一空腔3和第二空腔7，通过第一输送管5和第二输送管9将抗生素送入空腔中， 再分别通过第一通道孔4和第二通道孔8将抗生素分别从股骨1和胫骨基座2中喷出，使得抗生素与患者的关节接触，从而实现消毒和预防感染的作用。
如图1所示，股骨1后侧平面上固定连接有覆盖在第一出水孔6外侧的第一扩散层11，设有第一扩散层11，使得从股骨1内流出的抗生素可以被第一扩散层11均匀的吸收，从而使得抗生素可以均匀的涂抹在患者的关节上，从而使得关节的消毒效果更好。
如图1所示，胫骨基座2下端固定连接有覆盖在第二出水孔10外侧的第二扩散层12，设有第二扩散层12，使得从胫骨基座2内流出的抗生素可以被第二扩散层12均匀的吸收，从而使得抗生素可以均匀的涂抹在患者的关节上，从而使得关节的消毒效果更好。
如图1-3所示，股骨1前端面中心位置开有限位槽13，所述胫骨基座2上端中心位置设有位于限位槽13内的限位部14，设有限位槽13和限位部14，用来模拟人体膝关节的连接，避免股骨1在活动时脱离胫骨基座2。
如图3所示，第一输送管5和第二输送管9内设有抗生素，通过第一输送管5和第二输送管9可以随时向股骨1和胫骨基座2输送抗生素，从而在不取下股骨1和胫骨基座2的情况下对患者的关节进行消毒处理，减轻了工作人员的工作负担。
如图1所示，股骨1与胫骨基座2通过骨水泥固定在关节端。
如图1所示，股骨1和胫骨基座2的四周均通过倒边处理，避免股骨1和胫骨基座2四周在活动时对患者关节处的肌肉和皮肤造成伤害。
如图2所示，所述第一出水孔6从下往上逐渐增大设置，设有从下往上逐渐增大设置的第一出水孔6，避免在注入抗生素时抗生素马上从下端的第一出水孔6流出，使得与上端第一出水孔6接触的膝关节部分无法接触抗生素进行消毒处理。
如图5所示，限位槽13中端内侧固定连接与所述第一空腔3连接的橡胶按钮部15，所述第一空腔3内侧设有医用海绵16，所述医用海绵16的左端设有位于所述第一空腔3内侧的挤压片17，所述挤压片17左端设有与所述橡胶按钮部15对应的凸起块18，设有位于限位槽13内的橡胶按钮部15，当股骨1和胫骨基座2发生相对移动时，通过股骨1和胫骨基座2发生挤压使得橡胶按钮部15向内挤压从而带动挤压片17挤压医用海绵16，从而使得医用海绵16内侧的抗生素被挤出，使得患者的膝关节在运动的同时也可以进行消毒处理，避免该装置需要长时间的连接输送管通过输送管输送抗生素进行消毒处理。
本发明在使用时，只需将股骨1和胫骨基座2通过骨水泥固定在患者的关节处，当需要对患者的关节进行消毒处理时，只需将抗生素分别通入第一输送管5和第二输送管9中，抗生素通过输送管分别进入第一空腔3和第二空腔7内，再通过第一通道孔4和第二通道孔8流出，流出的抗生素被第一扩散层11和第二扩散层12吸收后，抗生素均匀的扩散分别在扩散层内，最后通过扩散层将抗生素涂抹在患者的关节上实现消毒处理。
虽然本发明已通过参考优选的实施例进行了图示和描述，但是，本专业普通技术人员应当了解，在权利要求书的范围内，可作形式和细节上的各种各样变化。

Claims (9)

  1. 一种用于膝关节置换后感染的间隔引流装置，包括股骨(1)和胫骨基座(2)，股骨(1)与胫骨基座(2)以关节方式交互连接，其特征是：所述股骨(1)内侧设有第一空腔(3)，所述股骨(1)右端开有与所述第一空腔(3)连接的第一通道孔(4)，所述第一通道孔(4)内侧密封连接有第一输送管(5)，所述股骨(1)后侧平面上开有若干个与所述第一空腔(3)连接的第一出水孔(6)，所述胫骨基座(2)内侧设有第二空腔(7)，所述胫骨基座(7)右端开有与所述第二空腔(7)连接的第二通道孔(8)，所述第二通道孔(8)内侧密封连接有第二输送管(9)，所述胫骨基座(1)下端平面上开有若干个与所述第二空腔(7)连接的第二出水孔(10)。
  2. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述股骨(1)后侧平面上固定连接有覆盖在第一出水孔(6)外侧的第一扩散层(11)。
  3. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述胫骨基座(2)下端固定连接有覆盖在第二出水孔(10)外侧的第二扩散层(12)。
  4. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述股骨(1)前端面中心位置开有限位槽(13)，所述胫骨基座(2)上端中心位置设有位于限位槽(13)内的限位部(14)。
  5. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述第一输送管(5)和第二输送管(9)内设有抗生素。
  6. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述股骨(1)与胫骨基座(2)通过骨水泥固定在关节端。
  7. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述股骨(1)和胫骨基座(2)的四周均通过倒边处理。
  8. 根据权利要求1所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述第一出水孔(6)从下往上逐渐增大设置。
  9. 根据权利要求4所述的一种用于膝关节置换后感染的间隔引流装置，其特征是：所述限位槽(13)中端内侧固定连接与所述第一空腔(3)连接的橡胶按钮部(15)，所述第 一空腔(3)内侧设有医用海绵(16)，所述医用海绵(16)的左端设有位于所述第一空腔(3)内侧的挤压片(17)，所述挤压片(17)左端设有与所述橡胶按钮部(15)对应的凸起块(18)。
PCT/CN2020/072372 2020-01-13 2020-01-16 一种用于膝关节置换后感染的间隔引流装置 WO2021142688A1 (zh)

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