Fixation device for fixing a patient's knee prosthesis

Abstract

To provide a medical device for creating an artificial knee joint or an artificial cruciate ligament in a patient, the medical device comprising a transversal member adapted to be placed through at least three layers of cortical bone of a distal portion of femoral bone, out of totally four cortical layers along a prolongation of the transversal member.SOLUTION: The transversal member is involved in the artificial knee joint or artificial cruciate ligament, where the transversal member at least comprises one fixation portion involved in fixation of the transversal member to at least one of the at least four layers of femoral cortical bone.SELECTED DRAWING: Figure 7a

Description

[Technical Field]

[0001] Knee replacement surgery is currently the most common type of knee replacement surgery, performed on over 1 million patients worldwide each year. The most common reason for performing knee replacement surgery is because the patient The knee joint is said to have osteoarthritis, which is a mild inflammation that causes joint pain. The mild inflammation can cause swelling and swelling in the inner joints, which acts as a covering and cushion. This is caused by abnormal wear of the cartilage that supports the knee joint, resulting in a loss of synovial fluid flow that lubricates the knee joint. This leads to a decrease in body mass. [Background technology]

[0002] In traditional surgery, the surgeon inserts the prosthesis into the lateral condyle, medial condyle, or medially. The prosthesis is placed on the lateral condyle. The prosthesis has a contact surface that is placed on top of the tibial bone and It may also include an artificial part replacing the knee cap.

[0003] The procedure usually takes up to two hours, and the surgeon makes an incision (10-30 cm long) under the front of the knee. cm). The patella is pushed to one side to reach the knee joint. The worn or damaged surface The bone is removed and shaped to fit the artificial knee joint.

[0004] The average patient age is 65 to 75 years old. Of those who undergo surgery, approximately 80% are unilateral ( Only one knee replacement is performed), and 20% are performed on both sides.

[0005] The knee joint is made up of the medial condyle, the proximal contact surface, and the lateral joint. The area of ​​the medial and lateral condyles of the femur is between the contact surfaces of the distal condyle and the medial femur. The tibia is a cross section of the proximal part of the bone. It consists of a triangular bone that articulates with the femur and covers and protects the knee joint. Also, a cartilaginous element within the knee joint that helps protect the ends of the bones from rubbing against each other The meniscus also acts as a shock absorber for the knee. There are two menisci: the medial meniscus and the lateral meniscus.

[0006] Osteoarthritis is a common condition of cartilage failure that can lead to limited movement, bone damage and Osteoarthritis is a condition that can be easily managed by a combination of acute stress and chronic fatigue. The cartilage wears away from the articular surface, and in extreme cases, the bone is exposed at the joint. Other cases of chondritis include disruption of cell-matrix junctions, suppression of chondrocyte protein synthesis, and and chondrocyte apoptosis.

[0007] A medical device for implantation in a patient's knee joint is provided. The medical device comprises a transverse member extension. The cortex of the distal part of the femur consists of at least three layers of cortex, out of four layers of cortex along the entire It consists of a transverse member that is placed through the bone. The transverse member is attached to the ligaments of the knee prosthesis or cruciate prosthesis. and the transverse member may be adapted to engage at least 400 of the cortical bone of the femur. At least one of the layers is adapted to be involved in the fastening of the cross member. The lateral member may be formed to provide stability to the femoral bone. A fixed fixation is provided.

[0008] According to one embodiment, the transverse member is located between the medial and lateral condyles of the prosthesis, and and / or between the normal lateral and medial articular surfaces of the cranial knee joint, and / or positioned It is suitable for engaging with the natural articular surface.

[0009] According to one embodiment, the transverse member is adapted to comprise the centre of rotation of the artificial knee joint.

[0010] According to one embodiment, the transverse member is positioned through four layers of cortical bone at the distal portion of the femoral bone. It is suitable to be used.

[0011] According to one embodiment, the transverse member articulates with another artificial knee joint surface that is fixed to the tibia. The artificial knee joint surface is suitable for

[0012] According to one embodiment, the transverse member is adapted to participate in holding the artificial knee joint. It consists of an artificial knee joint that maintains the knee joint.

[0013] According to one embodiment, the transverse member is positioned through three layers of cortical bone at the distal portion of the femoral bone. and adapted to be fixed to the fourth layer of cortical bone of the distal portion of the femur.

[0014] According to one embodiment, the transverse member is formed by two layers of cortex of the first condyle of the distal portion of the femoral bone. The elbow joint is positioned by the bone and is fixed to the tibia by an artificial elbow element, and Placed or fixed in at least one-third of the cortical bone of the second condyle of the distal femur It is suitable for

[0015] According to one embodiment, the transverse member is formed by two layers of cortex of the first condyle of the distal portion of the femoral bone. The artificial elbow joint element is positioned by the bone and fixed to the tibia, and the femur bone. It is surrounded by the third layer of cortical bone of the second condyle of the distal part of the femur, and It is placed or fixed in the fourth layer of the cortical bone of the second condyle of the distal portion of the bone. Suitable for.

[0016] According to one embodiment, the transverse member is a fixation device for the femur in the region between the medial and lateral condyles. It is suitable for connection to a chair, which provides additional stability to the joint.

[0017] According to one embodiment, the transverse member is a tibial fixation device in the region between the medial and lateral condyles. It is suitable for connecting to the bone, which provides additional stability to the joint when implanted. It will be provided.

[0018] According to one embodiment, the knee prosthesis is formed from a connection between a transverse member and a tibial fixation device. can be.

[0019] According to one embodiment, the medical device is adapted to be fixed to a transverse member at the end of a first cruciate ligament. The implant is formed from at least one artificial cruciate ligament.

[0020] According to one embodiment, the second cruciate ligament end is attached by a bone channel in the tibia. It is suitable for implanting either inside or outside the bone channel. Located at the opposite end to the first cruciate ligament end, adapted for later fixation to bone That's fine.

[0021] According to one embodiment, the medical device comprises a tibial fixation device adapted to be placed and fixed on the tibia. a second cruciate ligament end disposed at an opposite end to the first cruciate ligament end; It can also be placed in a position that allows it to be attached to the tibial fixation device when implanted. Suitable.

[0022] According to one embodiment, the transverse member is adapted to connect to the artificial knee joint surface at the lateral condyle of the femur. Suitable.

[0023] According to one embodiment, the transverse member is adapted to connect to an artificial knee joint surface at the medial condyle of the femur. are.

[0024] According to one embodiment, the medical device is adapted to be placed at the lateral condyle of the femur. It consists of an artificial knee joint surface.

[0025] According to one embodiment, the medical device according to any one of the preceding claims is adapted to be inserted into the inner femur. It consists of an artificial knee joint surface that is adapted to fit into the condyle.

[0026] According to one embodiment, the medical device further comprises two artificial cruciate ligaments and an anterior and a posterior cruciate ligament. and at least one ligament, configured for fixation at the same or different position of the transverse member. It is done.

[0027] According to one embodiment, the cruciate ligament is placed between the medial condyles to accommodate different positions. The cross member has an elongated portion extending in a forward and rearward direction, the cross member being adapted to be .

[0028] A medical device for implantation in a patient's knee joint is provided. The medical device includes at least Another bone fixation device is provided in the distal region of the knee joint, in the marrow of the tibia and in the cortical tibia. a tibial fixation device adapted to be guided by a bone of the tibia and in the region proximal to the knee joint; At least one suitable for being guided by the cortical femoral bone to the bone marrow of the femur The femur has a bone fixation device that is attached to the skin in the area normally found inside the knee joint. The bone fixation device is further adapted to provide bone marrow access through the bone marrow, wherein the bone fixation device is at least One artificial knee joint surface support, at least one artificial knee joint cruciate ligament support and at least one artificial knee joint surface for forming at least a portion of an artificial knee joint. By providing a bone fixation device, stable fixation is achieved.

[0029] According to one embodiment, the tibial fixation device is connected to a second femoral bone fixation device. and the femoral cortical bone at the site where it would normally be placed in the knee joint. The medical device is configured to connect a bone fixation device of the femur with a tibia to reduce mobility. The artificial knee joint may further comprise one artificial knee joint.

[0030] According to one embodiment, the femoral bone fixation device is connected to a second tibial fixation device. and for lowering the tibial cortical bone only at the site normally placed in the knee joint. The medical device is configured to connect a bone fixation device of the femur to the tibia and move at least one The present invention further comprises an artificial knee joint.

[0031] According to one embodiment, the medical device further comprises at least one artificial knee joint. The tibial fixation device and the femoral bone fixation device are connected to each other.

[0032] According to one embodiment, the femoral bone fixation device and the tibial fixation device are adapted to fixate the artificial knee joint. The axially extending members are adapted to be movably connected to each other to form a plurality of axially extending members.

[0033] According to one embodiment, the tibial fixation device includes first and second portions of the tibial fixation device. The joint further comprises a second joint allowing movement between the joints.

[0034] According to one embodiment, the first portion of the tibial fixation device is a fixation portion, The second portion of the device supports at least one artificial knee joint surface. A knee prosthesis is a prosthetic knee joint that supports the cruciate ligaments and consists of at least one artificial knee joint surface. It is one of the supporting parts of

[0035] According to one embodiment, the femoral bone anchoring device comprises a first and a second femoral bone anchoring device. It further comprises a second joint allowing movement between the second portion.

[0036] According to one embodiment, the first part of the femoral bone fixation device is the fixation part, The second part of the femoral bone fixation device is provided with an artificial knee joint surface, at least one artificial knee joint. Supports at least one of the intercrucial ligaments and at least one artificial knee joint surface It is the support part for

[0037] According to one embodiment, the artificial knee joint and the second joint are provided with an angle or artificial knee joint support. adjustable to adjust the position of the cruciate ligament support or artificial knee joint surface Suitable.

[0038] According to one embodiment, a normal knee joint is superficial to the medial and lateral femoral joints. Both were placed in the condyle, where, when implanted, the prosthesis It is suitable for placement laterally between the medial articular surfaces.

[0039] According to one embodiment, the normal knee joint surface is comprised of the medial and lateral femoral condyles and the tibial condyle. When placed between the femoral bones and implanted, the knee prosthesis will The intervening articular surfaces are better suited to placement in the skull.

[0040] According to one embodiment, the medical device comprises a surgical instrument for implanting the cortical bone of the femur, including both femoral condyles. The cross members are adapted to be arranged in at least two layers, and the cross members are Suitable for at least partially retaining the ligaments of an artificial knee joint or artificial cruciate The knee joint comprises at least one artificial knee joint or cruciate ligament retaining a portion of the artificial knee joint.

[0041] According to one embodiment, the transverse member comprises at least one artificial knee joint surface.

[0042] According to one embodiment, when implanted, the knee prosthesis comprises a single knee prosthesis. The two lateral contact surfaces and two medial contact surfaces present in a normal knee joint The present invention is suitable for forming a stent with two contacting articular surfaces that are suitable for replacing the stent.

[0043] According to one embodiment, the part of the bone fixation device that is placed in the bone marrow is the part of the femur or tibia bone. When implanted in the bone marrow, the bone moves from the inside of the bone along one or more of the elongated segments towards the cortical bone. a bone fixation device along one or more of its elongated portions to fixate the bone fixation device to the The bone fixation device may be configured to adjust the maximum radius or at least the maximum radius relative to the central axis of the bone fixation device. , and is clearly curved and includes at least one radius adjustment.

[0044] According to one embodiment, the portion of the bone fixation device that is placed in the bone marrow is located within or adjacent to the tibia. a skin configured to contact cortical bone from the femoral bone along one or more of the elongated portions; and at least one cortical bone contact surface and an associated portion of the bone fixation device. The material has a suspension relative to the cortical bone and is impacted into the bone marrow of the femur or tibia. When flattened, the suspension has a flexible portion along one or more elongated portions. For fixation of the bone fixation device, the chocks of the bone fixation device are absorbed towards the bone and cortical bone. This includes the flexible part of the vise.

[0045] According to one embodiment, the medical device comprises four surfaces of the extension of the transverse member as a whole, the surface of the femur. A transverse member suitable for placement with at least three layers of cortical bone in the distal portion of the bone? The transverse member is attached to at least one of the at least four layers of cortical bone of the femur. at least one fastening part adapted to participate in the fastening of the material, and a lateral part The material is involved in at least one of an artificial knee joint and an artificial cruciate ligament support. It's suitable to be there.

[0046] According to one embodiment, the transverse member is adapted to comprise the centre of rotation of the artificial knee joint.

[0047] In one embodiment, the transverse member is adapted to articulate with other artificial knee joint surfaces. The knee joint surface is part of a bone fixation device.

[0048] According to one embodiment, the bone fixation device can be drilled in the tibia or femur bone. It is suitable to be possible.

[0049] According to one embodiment, the medical device comprises an artificial cruciate ligament support having a first end thereof. The implant further comprises at least one artificial cruciate ligament adapted for fixation.

[0050] According to one embodiment, a second cruciform is positioned at the opposite end to the ligament end of the first cruciform. The ends of the ligament are attached by bone channels in the tibia or femur. , and the internal one on the outside of the knee joint after passing through the bone channel when implanted. At least one of them is adapted to be configured for fixation to bone.

[0051] According to one embodiment, the anterior and posterior cruciate ligaments are fixed to an artificial cruciate ligament support. Suitable for.

[0052] According to one embodiment, the knee joint is comprised of both medial femoral condyles and lateral femoral condyles. The femoral and tibial articular surfaces are placed at the position of the femoral condyle, and the bone fixation device is Both are suitable for supporting one artificial joint surface and are positioned laterally on the medial femoral condyle. and adapted to be placed in at least one of the positions and connected to the bone fixation device.

[0053] According to one embodiment, at least one artificial joint surface is at least laterally medial to the femur. It is adapted to be placed at one of the condylar locations and fixed to a bone fixation device.

[0054] In any of the embodiments herein, various elasticities are used to absorb the chocks towards the bone. The structure can play an important role as a tool for the forces that are This can be accomplished in many different ways. A preferred structure is combined with a radius adjustment device according to any of the embodiments herein. The various elasticities are achieved using different techniques that create different elasticities. and the present invention is not limited to the embodiments disclosed herein. Similar results can be obtained with any type of spring suspension, including various springs. This may be achieved by any type of suspension and construction to achieve the same result. It may thus be bendable or flexible.

[0055] A medical device for implantation in a patient's knee joint is provided. The medical device has a fixation device for implanting a fixation device into the bone marrow of the femur in the proximal region of the knee joint. It is composed of bones that are guided by the bones in the distal region of the knee joint, in the marrow of the tibia, and in the cortex. A tibial fixation device and a femoral bone fixation device adapted to be guided by the tibial bone The bone fixation device consists of at least one of the following: The bone fixation device is further adapted to provide bone marrow access through the bone marrow of at least one knee prosthesis. Articular surface support, at least one artificial knee joint cruciate ligament support and artificial knee joint At least one of the at least one artificial knee joint surface for forming at least a portion of the joint By providing a bone fixation device, stable fixation can be achieved.

[0056] According to one embodiment, the tibial fixation device is connected to a second femoral bone fixation device. It may be suitable for placing the femoral cortical bone only at the site where it would normally be placed in the knee joint. The medical device may be adapted to connect a bone fixation device of the femur with a tibia to provide a small mobile It may further comprise at least one artificial knee joint.

[0057] According to one embodiment, the femoral bone fixation device is connected to a second tibial fixation device. Suitable for placing the tibia cortical bone only at the site normally placed in the knee joint. The medical device further comprises at least one artificial knee joint articulation portion connecting the tibial joint and the aorta. and a femoral bone fixation device.

[0058] According to one embodiment, the medical device further comprises at least one artificial knee joint; and It is movably connected to a tibial fixation device and a femoral bone fixation device.

[0059] According to one embodiment, the femoral bone fixation device and the tibial fixation device are adapted to fixate the artificial knee joint. The axially extending members are adapted to be movably connected to each other to form a plurality of axially extending members.

[0060] According to one embodiment, the tibial fixation device includes first and second portions of the tibial fixation device. The joint further comprises a second joint allowing movement between the joints.

[0061] According to one embodiment, the first portion of the tibial fixation device is a fixation portion, The second portion of the prosthesis supports the prosthetic knee joint surface and includes at least one cruciate ligament. At least one of the following: It is a support part for

[0062] According to one embodiment, the femoral bone anchoring device comprises a first and a second femoral bone anchoring device. It further comprises a second joint allowing movement between the second portion.

[0063] According to one embodiment, the first part of the femoral bone fixation device is the fixation part, The second part of the bone fixation device of the femur includes an artificial knee joint surface, at least one artificial knee joint cruciform. a support portion for supporting at least one of the ligaments and at least one artificial knee joint surface; minutes.

[0064] According to one embodiment, the artificial knee joint and the second joint are provided with an angle or artificial knee joint support. adjustable to adjust the position of the cruciate ligament support or artificial knee joint surface Suitable.

[0065] According to one embodiment, a normal knee joint is superficial to the medial and lateral femoral joints. Both were placed in the condyle, where, when implanted, the prosthesis Located laterally between the medial articular surfaces.

[0066] According to one embodiment, the normal knee joint surface is comprised of the medial and lateral femoral condyles and the tibial condyle. The artificial knee joint is more suitable for placement between the femoral bones. When implanted in the skull, the normal lateral and medial articular surfaces are present.

[0067] According to one embodiment, the medical device comprises a surgical instrument for implanting the cortical bone of the femur, including both femoral condyles. a cross member adapted to be arranged in at least two layers, wherein: The transverse member is at least partially involved in retaining the ligaments of the prosthetic knee or cruciate. At least one artificial knee joint or cruciate ligament retaining part of the knee that is suitable for It consists of.

[0068] According to one embodiment, the transverse member comprises at least one artificial knee joint surface.

[0069] According to one embodiment, when implanted, the knee prosthesis comprises a single knee prosthesis. The two lateral contact surfaces and two medial contact surfaces present in a normal knee joint The ligament is formed by two contacting articular surfaces suitable for replacing the ligament.

[0070] According to one embodiment, the portion of the bone fixation device that is placed in the bone marrow comprises one or more of its elongated portions. At least one radius adjustment along the top and in the bone marrow of the femur or tibia When implanted, from the interior of the bone along one or more of the elongated segments towards the cortical bone Configured to substantially adjust the maximum lateral radius for fixation of the bone fixation device Or at least bent significantly with respect to the central axis of the bone anchoring device.

[0071] According to one embodiment, a bone fixation device is positioned in the bone marrow along one or more of its elongated portions. The part of the base is suitable for contacting the cortical bone from the inside of the tibia or femur. The cortical bone contact surface and the associated material of the bone fixation device are and a suspension is implanted into the bone marrow of the femur or tibia. When implanting, the elongated bone anchoring device is absorbing the anchoring ring towards the cortical bone. The bone fixation device has a bendable portion and a resilient portion along one or more of the portions.

[0072] According to one embodiment, the medical device comprises four surfaces of the extension of the transverse member as a whole, the surface of the femur. A transverse member suitable for placement with at least three layers of cortical bone in the distal portion of the bone? wherein the transverse member is formed from at least four layers of cortical bone of the femur. Each of the cross members comprises at least one fastening part adapted to participate in the fastening of the cross member. , and the transverse member is at least one of the artificial knee joint and the artificial cruciate ligament support. It relates to one thing.

[0073] According to one embodiment, the transverse member is adapted to comprise the centre of rotation of the artificial knee joint.

[0074] In one embodiment, the transverse member is adapted to articulate with other artificial knee joint surfaces. The knee joint surface is part of a bone fixation device.

[0075] According to one embodiment, the bone fixation device can be drilled in the tibia or femur bone. It is possible.

[0076] According to one embodiment, the medical device comprises an artificial cruciate ligament support having a first end thereof. The implant further comprises at least one artificial cruciate ligament adapted for fixation.

[0077] According to one embodiment, a second cruciate ligament end (opposite end to the first cruciate ligament end) The implant is placed through a bone channel in the tibia or femur. When the bone is injected, it penetrates the bone channel and then penetrates the inside of the bone channel and the outside of the knee joint. The implant is configured for fixation to at least one bone.

[0078] According to one embodiment, the anterior and posterior cruciate ligaments are fixed to an artificial cruciate ligament support. .

[0079] According to one embodiment, the knee joint is comprised of both medial femoral condyles and lateral femoral condyles. The femoral and tibial articular surfaces are placed at the position of the femoral condyle, and the bone fixation device is Supports one artificial joint surface and positions at least one of the medial and lateral femoral condyles. Both are placed together and connected to a bone fixation device.

[0080] According to one embodiment, at least one artificial joint surface is at least laterally medial to the femur. It is placed in one of the condylar positions and fixed to the bone fixation device.

[0081] A medical device for implantation in a patient's knee joint is also provided. The medical device is generally made up of four surfaces along the length of the transverse member, which are connected to the femoral bone. It consists of a transverse member positioned with at least three layers of cortical bone at the end portion. The transverse member may be associated with an artificial knee joint or an artificial cruciate ligament, and the transverse member may be associated with the femoral cutaneous At least one of the at least four layers of bone is involved in the fixation of the transverse member. The stent may consist of one fixed part. By forming a transverse member, the stent can be secured to the femoral bone. The sensor is fixed in place.

[0082] According to one embodiment, the transverse member is located laterally between the medial condyles and / or the normal Related to artificial joints located between the lateral and medial articular surfaces and / or of the cranial knee joint It is placed on the natural articular surface.

[0083] According to one embodiment, the transverse member comprises the center of rotation of the knee prosthesis.

[0084] According to one embodiment, the transverse member is positioned through four layers of cortical bone at the distal portion of the femoral bone. will be done.

[0085] According to one embodiment, the transverse member articulates with another artificial knee joint surface that is fixed to the tibia. The artificial knee joint surface is suitable for

[0086] According to one embodiment, the transverse member is adapted to participate in holding the artificial knee joint. It consists of an artificial knee joint that maintains the knee joint.

[0087] According to one embodiment, the transverse member is positioned through three layers of cortical bone at the distal portion of the femoral bone. The femoral bone is then secured to the fourth layer of cortical bone at the distal end of the femur.

[0088] According to one embodiment, the transverse member is formed by two layers of cortex of the first condyle of the distal portion of the femoral bone. The artificial knee joint component is placed through the bone and fixated on the tibia, and the artificial knee joint component is placed through the bone of the femur. Placed or fixed through at least one-third of the cortical bone of the distal second condyle do.

[0089] According to one embodiment, the transverse member is formed by two layers of cortical bone of the first condyle of the distal portion of the femoral bone. The artificial knee joint component is placed through the tibia and fixed to the femur. It is placed through the third layer of cortical bone of the second condyle of the distal part and then through the distal part of the femur. It is placed or fixed through one-quarter of the cortical bone of the second condyle of the end portion.

[0090] According to one embodiment, the transverse member is a fixation device for the femur in the region between the medial and lateral condyles. It is connected to the ligament, which allows for further stability of the joint.

[0091] According to one embodiment, the transverse member is a tibial fixation device in the region between the medial and lateral condyles. It is connected to the hamstrings, which allows for further stability of the joint.

[0092] According to one embodiment, the knee prosthesis comprises a connection between a transverse member and a tibial fixation device. It is also possible.

[0093] According to one embodiment, the medical device is adapted to be fixed to a transverse member at the end of a first cruciate ligament. The implant may comprise at least one artificial cruciate ligament.

[0094] According to one embodiment, the second cruciate ligament end is disposed at the opposite end of the first cruciate ligament end. The implant may be adapted to be attached in a bone channel of the tibia when implanted. and then fixed to the bone either medially or externally through the bone channel.

[0095] According to one embodiment, the medical device is a tibial fixation device that is positioned and fixed in the tibia. The second cruciate ligament end is configured to be in contact with the first cruciate ligament end when implanted. The tibial fixation device may be located at the opposite end of the tibial fixation device.

[0096] According to one embodiment, the transverse member connects to the artificial knee joint surface at the lateral condyle of the femur.

[0097] According to one embodiment, the transverse member connects to the artificial knee joint surface at the medial condyle of the femur.

[0098] According to one embodiment, the medical device comprises an artificial knee joint surface that is placed on the lateral condyle of the femur. It consists of.

[0099] According to one embodiment, the medical device according to any one of the preceding claims is adapted to be inserted into the inner femur. It consists of an artificial knee joint surface that is adapted to fit into the condyle.

[0100] According to one embodiment, the medical device further comprises two artificial cruciate ligaments, anterior and posterior cruciate ligaments. The U-shaped ligaments are suitable for fixing to at least one of the transverse members at the same or different positions. There are.

[0101] According to one embodiment, the cross member has an elongated portion extending in a forward and rearward direction; It is configured to be placed between the medial condyles to accommodate different positions of the cruciate ligaments. can be.

[0102] In any of the embodiments herein, various elasticities are used to absorb the chocks towards the bone. The structure can play an important role as a tool for the forces that are This can be accomplished in many different ways. In accordance with any of the embodiments, the variable resilience is combined with a radius adjustment device. This may be accomplished using different techniques and the present invention is The invention should not be limited to the examples disclosed in this document. is achieved by any kind of suspension, including spring suspension and the structure may be bendable or flexible to achieve the same result. .

[0103] The embodiments, features, methods, and associated systems, or portions thereof, are not limited to those described in part herein. The present invention can be combined in any manner within the systems described in the above. [Brief explanation of the drawings]

[0104] The present invention will now be described with reference to the drawings.

[0105] [Figure 1] FIG. 1 shows an anterior view of the patient's right leg where the surgical incision was performed.

[0106] [Figure 2] FIG. 2 shows a patient's leg with dotted lines marking the bone and bone channels created in the bone.

[0107] [Figure 3a] FIG. 3a shows a cross-sectional view of the posterior portion of a patient's leg.

[0108] [Figure 3b] Figure 3b shows a side cross-sectional view of the leg of the patent.

[0109] [Figure 4a] FIG. 4a shows a cross-sectional view of the posterior portion of a patient's leg.

[0110] [Figure 4b] Figure 4b shows a side cross-sectional view of the leg of the patent.

[0111] [Figure 5a] Figure 5a shows an embodiment of the medical device in more detail.

[0112] [Figure 5b] FIG. 5b shows a side cross-sectional view of a leg of a patent when a medical device according to one embodiment is implanted.

[0113] [Figure 6] FIG. 6 shows a side cross-sectional view of a leg of the patent when a medical device according to one embodiment is implanted.

[0114] [Figure 7a] FIG. 7a shows a cross-sectional view of the posterior portion of a patient's leg when a medical device according to one embodiment is implanted.

[0115] [Figure 7b] FIG. 7b shows a bone anchoring device according to one embodiment in more detail.

[0116] [Figure 8a] FIG. 8a shows a cross-sectional view of the posterior part of a patient's leg when a medical device according to one embodiment is implanted.

[0117] [Figure 8b] FIG. 8b shows the bone anchoring device according to one embodiment in more detail.

[0118] [Figure 9a] FIG. 9a shows a cross-sectional view of the rear of a patient's leg when a medical device according to one embodiment is implanted.

[0119] [Figure 9b]FIG. 9b shows a bone anchoring device according to one embodiment in more detail.

[0120] [Figure 10a] FIG. 10a shows a cross-sectional view of the rear of a patient's leg when a medical device according to one embodiment is implanted.

[0121] [Figure 10b] FIG. 10b shows a side cross-sectional view of the leg of a patent when a medical device according to one embodiment is implanted.

[0122] [Figure 11] FIG. 11 shows a cross-sectional view of the posterior portion of a patient's leg when the artificial joint surface has been implanted.

[0123] [Figure 12a] FIG. 12a shows a cross-sectional view of the posterior part of a patient's leg when a medical device according to one embodiment has been implanted.

[0124] [Figure 12b] FIG. 12b shows a side cross-sectional view of the leg of a patent when a medical device according to one embodiment is implanted.

[0125] [Figure 13a] FIG. 13a shows a cross-sectional view of the posterior part of a patient's leg when the artificial cruciate ligament is implanted.

[0126] [Figure 13b] FIG. 13b shows a lateral cross-sectional view of the leg of the patent when the artificial cruciate ligament has been implanted.

[0127] [Figure 14] FIG. 14 shows a cross-sectional view of the posterior portion of a patient's leg when the artificial cruciate ligament has been implanted.

[0128] [Figure 15]FIG. 15 shows a lateral cross-sectional view of a patient's leg when the artificial cruciate ligament has been implanted.

[0129] [Figure 16a] FIG. 16a shows in more detail the radius adjustment member in a first state, according to one embodiment.

[0130] [Figure 16b] FIG. 16b shows in more detail the radius adjustment member in a second state, according to one embodiment.

[0131] [Figure 17a] FIG. 17a shows in more detail the radius adjustment member in a first state, according to one embodiment.

[0132] [Figure 17b] FIG. 17b shows in more detail the radius adjustment member in a second state, according to one embodiment.

[0133] [Figure 18a] FIG. 18a shows in more detail the radius adjustment member in a first state, according to one embodiment.

[0134] [Figure 18b] FIG. 18b shows in more detail the radius adjustment member in a second state, according to one embodiment.

[0135] [Figure 19a] FIG. 19a shows in more detail the radius adjustment member in a first state, according to one embodiment.

[0136] [Figure 19b] FIG. 19b shows in more detail the radius adjustment member in a second state, according to one embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0137] Analysis of the hip joint and its environment is further disclosed in: Marieve et al., Human Anatomy, 2003, Benjamin Cummings ,San Francisco, pp. 195-202, and Moore et al., Clinical ly oriented anatomy, 1999, Lippincott, Williams and and Wilkins, Baltimore, pp. 501-653, both of which are incorporated herein by reference. do.

[0138] The length axis of the femur is the length of the femur from the proximal part of the femur to the distal part of the femur. It is to be understood as the axis running the length of the bone.

[0139] The axes of the lateral and medial condyles are understood as axes perpendicular to the longitudinal axis of the femur. The functional knee movement of the original knee joint is the lateral movement of the medial condyle axis. It is carried out in and around the area.

[0140] Biocompatible materials are to be understood as materials that have a low level of immune response. Biocompatible materials are sometimes called biocompatible materials. Compatible metals are biocompatible metals with low immune response, such as titanium and tantalum. is.

[0141] A metal alloy is understood as a mixture of two or more elements in solid solution, the main constituent of which is a metal. Steel alloys are therefore made up of alloys in which one of the components is iron and the other is carbon. Titanium alloys are alloys that are alloys of steel. ... It is an alloy of titanium.

[0142] Resilience is to be understood as the ability of a material to deform in an elastic manner.

[0143] The carrying surface and weight-bearing surface are surfaces suitable for carrying weight within the knee joint. This will be understood as

[0144] Functional knee kinematics can be understood as knee movements that at least partially correspond to the natural knee motion. After knee surgery, the natural movement of the knee may be somewhat restricted. The functional knee motion of the knee joint with the artificial surface may be limited or altered compared to the natural knee. This will be somewhat different from the functional knee movement of the joint.

[0145] The functional position of an implantable medical device or prosthesis is the position at which the knee joint performs functional knee movements. It is a position where you can

[0146] A functional knee is a functional knee with or without an implanted medical device or prosthesis. The knee joint is capable of performing movements.

[0147] When the medical device is implanted in the knee joint, the full functional size is determined by the medical device. The dimensions of the device are to be understood as the dimensions of the device.

[0148] The material of the medical device according to any of the embodiments is polytetrafluoroethylene (PTFE). Perfluoroalkoxy (PFA) and Fluorinated Ethylene Propylene (FEP) It is also possible to use a metal alloy as the material. , for example cobalt-chromium-molybdenum or titanium or stainless steel, or Polyethylene, such as cross-linked polyethylene or gas-sterilized polyethylene Examples include: Contact surfaces or all medical devices, e.g. zirconium or zirconium dioxide ceramic The use of ceramic materials such as quartz or alumina ceramics is also contemplated. The part of the medical device that comes into contact with the human bone for fixation of the medical device to the human bone is The structure may comprise a human bone growth of the medical device for fixation of the medical device. The porous structure may be a porous micro- or nano-structure suitable for promoting by applying a hydroxyapatite (HA) layer or a rough, porous titanium layer. It may be provided with an air plasma sprayed, rough open-porous titanium coating. Combinations of and surfaces consisting of are also contemplated and may also be made of certain HA. The articular surface may be made of a naturally lubricious material, such as a waxy modified polymer. For example, lubricated, PTFE, PFA, FEP, PE and UHMW PE or powder metallurgy materials, and the lubricant is a biological material such as a hyaluronic acid derivative. Compatible lubricants are preferred. It is contemplated that the lubricant may be suitable for constant or intermittent lubrication. According to the Combination of boron, combination of metal and plastic materials, metal and carbon based Combination of materials that are based on carbon and plastic, flexible Combinations of hard and elastic materials, elastic and less elastic materials, Corian or may be formed from an acrylic polymer.

[0149] In the following, a detailed description of the embodiments is given. In the drawings, like reference numerals: Identical or corresponding parts are shown throughout the figures. These figures are for illustrative purposes only. It goes without saying that the scope of the present invention is not limited in any way. As such, any reference to a direction, e.g., "up" or "down," refers to the direction shown in the diagram. The drawings are for illustrative purposes only. is shown.

[0150] FIG. 1 shows the right leg of a patient. The distal femoral bone 102 is connected to the lateral condyle 10 5, medial condyle 106 and the area between the medial condyle 109 laterally. The distal portion of bone 102 is provided with a knee joint contact surface. The knee joint further comprises: It consists of the patella 101, a triangular bone that articulates with the femur 102. The knee joint also has a protective function because the ends of the bones rub against each other. Meniscus, a cartilaginous member within the knee joint that serves as an articulating surface to protect The menisci 107 and 108 also act as shock absorbers for the knee joint. and absorbs shock from changes in the patient's condition. Two menisci 107, 108 are located in each knee. , medial meniscus 107 and lateral meniscus 108. In osteoarthritis patients, i.e. The menisci 107, 108, which act as the weight-bearing surfaces as the articular forming surfaces, are worn down and extreme cases occur. At the base, bones can be exposed in the joint. The knee joint is made up of the knee joint capsule 132, It is protected by the knee joint capsule, also known as the knee joint capsule or the knee joint capsular ligament. The capsule 132 is wide, loose, and thin in front and on the sides, and is in contact with the patella 101. ligaments, menisci, and small fluid-filled sacs made of white fibrous tissue. The knee joint capsule 132 is separated into anterior and posterior portions by a fatty deposit. It consists of a synovial fluid and a fibrous membrane.

[0151] FIG. 2 shows the left lower leg, the femur 102, the tibia 104, the fibula 103, and the patella. 1 shows the left lower extremity of a patient with a dotted line indicating the bone. In the femoral bone 102, bone channel B is A puncture is made in the bone from the front region of the femur, penetrating the first cortical bone and the sulcus of the femoral bone 102. It penetrates the cancellous bone and, in its extension, reaches the femoral interior, preferably laterally. the cortical bone of the distal femur 102 in the region between the medial and medial condyles, and the proximal tibia It penetrates the cortical bone of the segment and into the cancellous bone of the tibia 104 in substantial extension thereof.

[0152] FIG. 3a shows a cross-sectional view of a bone channel B formed in bone, as described with respect to FIG. 1 shows an anterior view of a patient's leg in which a femoral bone fixation device 201 is attached to the femoral bone 10. In the area close to the knee joint, such as the area of ​​the central part of the femur 102, the cancellous bone of the marrow of the femur 102, The femoral bone fixation device 201 is introduced through the cortical femoral bone 102. It leaves the bone marrow through the area inside the normal knee joint and into the area between the lateral and medial condyles. The femur, shown here as Figure 3a, exits in the area between the lateral and medial condyles. a bone fixation device for the bone, forming at least a portion of the artificial knee joint surface 204; However, in other embodiments, the femoral bone anchoring device 201 is , as a support for at least one artificial knee joint surface, or as a support for at least one artificial knee joint It may also be used as a support for the intercrucial ligaments.

[0153] In the illustrated embodiment of FIG. 3 a, the tibial fixation device 205 is located in the central portion of the tibia 104. In the region distal to the knee joint, such as the region of the tibia 10, through the cortical tibia 10 and into the medullary tibia 104, The tibial fixation device 205 is inserted into the cancellous bone of the knee joint. The bone then traveled through the cortical bone, exiting the marrow and emerging in the area shown here as the center of the tibial plateau. The tibial fixation device shown in FIG. 3a is attached to an artificial knee joint forming at least a part of the artificial knee joint. However, in other embodiments, the tibial fixation device 201 as a support for at least one artificial knee joint surface or at least one It may also be used as a cruciate ligament support for a knee prosthesis.

[0154] According to the illustrated embodiment of FIG. 3a, a femoral bone anchoring device 201 and a tibial anchoring device The chair 205 is attached to the artificial knee joint surface 204a and the artificial knee joint by the bone fixation device of the femur. 204b, and a tibial fixation device having a joint surface 204b. If the knee joint is weakened or the natural knee joint is worn, or if When replacing a knee joint with an artificial knee, the natural knee joint may be relieved by the artificial joint. A knee prosthesis placed mid-jointly assists or replaces the natural knee joint. The artificial knee joint, which is placed midway in the natural knee joint, is designed to allow the artificial joint to function properly if the knee joint weakens. If the original knee joint wears out, it can be replaced with an artificial knee joint. The femur 201 and tibia 205 are used to assist or replace the traditional knee joint. The fixation member may be supported as needed by using an adhesive, for example, bone cement. This increases the clamping force and provides stable fixation of the artificial knee joint.

[0155] According to one embodiment (not shown), one of the tibia 205 and the femur 201, fixation The device is adapted to be fixed only to the first cortical bone in the area of ​​the knee joint, the surface of which The central location is in the knee joint. This embodiment is suitable for use with a single hole, i.e. The artificial bone fixation device 201 is placed between the femoral bone fixation device 201 and the tibial bone fixation device 205. a femoral bone fixation device placed on each of the knee joints 204a / 204b; and All bone fixation devices, including tibial fixation devices, are either in the femur or the tibia. For example cases can be considered.

[0156] In another embodiment, between the femoral bone fixation device 201 and the tibial fixation device 205 The prosthetic knee joint to be placed includes a movably mounted tibial fixation device 205 and a femoral bone fixation device 206. It is a separate component connected to 201.

[0157] The femoral bone anchoring device 201 according to the illustrated embodiment of FIG. 3a is a femoral and tibial anchoring device. Between the first 208a, 209a and the second 208b, 209b, which are parts of the vice, Each of them allows movement and further comprises second joints 203a and 203b.

[0158] FIG. 3b shows a medical device consisting of a femoral bone fixation device 201 and a tibial fixation device 202. 3b shows a cross section of the patient's leg when the osseointegrated ... According to an embodiment, the bone channel is made from one direction and the part that crates the channel is The material enters the cortical bone of the femoral bone 102 at only one location, thus, the same as that disclosed with respect to FIG. In addition, create channel B so that

[0159] The medical device comprising the femoral bone fixation device 201 and the tibial fixation device is The medical device was placed in channel B through the cortical bone entry hole. In doing so, the femoral bone fixation device and the tibial fixation device are fixed to the femoral bone 102 The holes are pre-attached to each other prior to the introduction of the medical device. According to the embodiment, the femoral bone anchoring device 201 and the tibial anchoring device 205 are The artificial knee joint surface 204b is used to form an artificial knee joint by the bone fixation device 201 of the femur. and a tibial fixation device 205, each of which is movable. The artificial knee joint is designed to assist or replace the natural knee joint. It is placed in the center of the knee joint, and if the knee joint weakens, it will be supported by an artificial joint. Also, if the natural knee joint wears down, it is replaced with an artificial knee joint. The bone fixation device of the tibia 205 may be supported with an adhesive such as bone cement, if necessary. This allows the base to be strengthened and provides stable fixation of the artificial knee joint.

[0160] In Figures 3a and 3b, the bone fixation devices of the femur 201 and tibia 205 are Bone fixation of the femur 201 and tibia 205 from the interior of the bone along the length towards the cortical bone To fixate the device, the bone anchoring device must be positioned substantially transverse or slightly transverse to the central axis of the bone anchoring device. Radius adjusting device 202 suitable for adjusting the maximum radius at least clearly at an angle The radial adjustment device is fixed to the inside of the femur and the tibia by the expansion member 202. The details are described in more detail in Figures 16a-19b.

[0161] 4a and 4b show an embodiment in which the fixation devices 201, 205 are similar to those of FIGS. 3a and 3b. In 4a and 4b, we note the similarities to those mentioned above. The bone channel B is created from above, entering the femoral bone 102, and from below , allowing the introduction of the tibial fixation device 205 into the hole in the tibia 104, entering the tibia 104 and Then, the femoral bone fixation device 201 is introduced through the hole in the tibia 104. If the chair 201 has an artificial femoral articular surface and a tibial fixation device 205, To form a knee joint, it can be connected to an additional part to form an artificial joint, or Or simply by connecting to each other, the artificial tibial articular surfaces meet in the natural knee joint.

[0162] Figures 5a and 5b show the second joints 203a, 203b in more detail. The segments 203a, b are the first 208a, 209a and the second 208b (femur), respectively. The second joint allows movement between the femur and the tibia (portion 209b of the tibial fixation device). The artificial knee joint is composed of the fixation device 201 and the surface layers 204a, b of the tibial fixation device 201. It allows for accurate adjustment of the joint position. The center of rotation is the natural movement of the hip joint. Since the artificial knee joint needs to be in the right position to move in accordance with the Coordination can be very important. The second joint is connected by bone channel B or by electrical Motors integrated into the femoral and / or tibial fixation devices, respectively adjustable, for example manually, by a tool reaching the means (such as a valve or solenoid) The electrical means may be a control device having remote or wired control outside the patient. The device can be powered using an implantable battery that can communicate via the In another embodiment, the object is operated by direct action in the form of wireless energy. In this case, for example, the magnetic force or induction acting on the electrifying object is 01 and / or tibia 205 fixation device.

[0163] FIG. 6 shows the second joint 203a, 203b, which is connected to the bone anchoring device 201 of the femur and the bone anchoring device 202 of the tibia. To place a prosthetic knee joint having articular surfaces 204a, 204b of a fixation device 205 5b shows a medical device in use in an embodiment similar to that illustrated with respect to FIG. 5b.

[0164] Figure 7a shows the posterior part of a patient's leg in which a medical device for creating an artificial knee joint has been implanted. The medical device is inserted into the four layers of cortical bone 111a, 111b, 111c of the distal portion of the femoral bone 102. 111b, 111c and 111d along the extension of the cross member 221, and The outer layer is made up of a transverse member 221. The transverse member 221 is laterally connected to the inner It is suitable for use in knee prostheses placed midway between the femoral condyles. In this embodiment, one end of the cross member 221 comprises a fixed stop 226, while the other end of the cross member 221 Although the four ends are layered in the cortical bone 111a-d, the nut 225 It consists of an internal threaded portion that is fitted to secure the cross member in the hole.

[0165] In the illustrated embodiment of FIG. 7a, the transverse member 221 is positioned laterally between the medial condyle. The artificial joint is placed between the normal lateral and medial articular surfaces of the knee joint. It is suitable for placement in the cranial direction of the articular surface of the

[0166] According to the illustrated embodiment of FIG. 7a, the cross member 221 constitutes the center of rotation and a U-shaped portion 222 adapted to be articulated with a cross member for creating a The tibial fixation element 205 is partially surrounded by the tibial fixation element 205.

[0167] In another embodiment (not shown), the cross member 221 may be associated with a retaining prosthetic knee joint. It is suitable to comprise a part that holds the artificial knee joint in place. The joints consist of additional pads.

[0168] FIG. 7b shows in more detail the cross member 221 articulating the prosthesis for crating. 2 shows a tibial fixation device 205 consisting of a U-shaped portion 222 suitable for The vise 205 is configured or at least finely adjusted to substantially adjust the maximum lateral radius. To fixate the tibial fixation device 205 along its length from the interior of the bone towards the cortical bone. , adjusting the radius of curvature relative to the central axis of the tibial fixation device 205. According to the embodiment shown in FIG. 7b, the radial adjustment The member 202 may be, for example, a motor or solenoid incorporated into the tibial fixation device 205. The electrical means may be operated by a remote control 212 on the patient's exterior. The device may be powered using an implantable battery capable of communicating via a controller having Electrical means that something is operated by direct action in the form of wireless energy. In another embodiment, for example, the magnetic force or induction affecting the electric object is applied to the tibia 2. This means that it is part of the 05 fixing device. Details of the radius adjustment device are shown in Figure 16a-19 b is described in more detail.

[0169] FIG. 8a shows an embodiment similar to that described with reference to FIG. 7a, but with the cross member 221 is placed in three layers of cortical bone 111a-c of the distal portion of the femoral bone 102, The female screw portion 227a is suitable for fixing to the bone, and is fixed to the fourth layer 111d. different.

[0170] The tibial fixation member 205 shown in FIG. 8b is identical to the tibial fixation member of FIG. 7b. and has a structure that is independent of the fixation of the cross member.

[0171] FIG. 9a shows an embodiment similar to that described with reference to FIG. 7a, but with the cross member 221 is disposed in two layers of cortical bone 111a-b at the distal portion of the femoral bone 102, The part is fixed to the third layer 111c by the female screw part 227a suitable for fixing to the bone. differs.

[0172] The tibial fixation member 205 shown in FIG. 9b is identical to the tibial fixation member of FIG. 7b. As such, it has a structure that is independent of the fixation of the cross member.

[0173] FIG. 10a illustrates an embodiment of a medical device similar to the embodiment illustrated with respect to FIGS. 7a, 8a, and 9a. For example, the medical device further comprises a transverse member 221 and a tibial fixation device 205. 10. The method of claim 1, further comprising a femoral bone fixation device 201 for stabilizing the joint. The femoral bone fixation device 201 is similar to the femoral bone fixation device described with reference to FIGS. The device is similar to the tibial fixation device 205, except that the distal-most portion 222a of the tibial fixation device 205 is U-shaped. and configured to articulate about a center of rotation located at the cross member 221. are different in minutes. The U-shaped proximal portion 222a of the tibial fixation device is suitable for interacting with the U-shaped portion of the distal end of the femoral bone fixation device 2 01, and, according to the embodiment is such that the proximal portion 222a of the member 205 fixing the tibia and the end portion 222b of the femoral fixing member 201 can contact each other. The proximal portion 222a of the member fixing the tibia and the distal portion 222b of the femoral fixing member can consist of an articular surface, and the knee joint supporting the surface layer of the proximal portion 222a of the member 205 fixing the tibia and the distal portion 222b of the femoral bone fixation member 201 forming an articulation with the cross member 221 has an articulation as a joint where the surface can be formed and functions. The artificial knee joint can, of course, consist of many different technical solutions, and the interpretation provided in this specification is just an example. <�

[0174] Figure 10b shows an embodiment of a medical device and is an intermediate view further showing a cross-section of a patient's leg, as described in Figure 10. In the illustrated embodiment of Figure 10b, the center of rotation is in the region of the cross member 221 so that rotation around the cross member 221 corresponds to changes in the natural knee joint. is arranged. [[ID=3*]]

[0175] Figure 11 shows an embodiment in which the cross member 221 is fixed by four layers of cortical bone (as further disclosed with respect to Figure 7a). In the illustrated embodiment of Figure 11 used to fix the cross member 221, the artificial knee joint surfaces 231a, b that are at least partially adapted replace the natural knee joint surface. The artificial knee joint surfaces 231a, b are suitable for being fixed by the fixing parts 232 that enter the cancellous bone of the femoral bone, and the cross member 221 is fixed to the first layer of cortical bone for fixing ​​​​​ The first artificial knee joint surface 231a of the component 232 penetrates the second layer of cortical bone and extends laterally to the medial joint. It extends into the area between the medial and medial condyles, penetrates the third layer of cortical bone, and forms a second artificial knee joint surface 231 and fix the stays of the artificial knee joint surfaces 231a,b. In the embodiment shown in FIG. One end of the member 221 is made of four layers of cortical bone, and the other end of the cross member 221 is made of a nut that fits into the cross member in the hole. It consists of a fixed stop, while the female threaded part is attached to fix it. However, as further described with respect to FIG. 8a, the transverse member 221 is The distal part of the 102 is placed in three layers of cortical bone and has an internal thread suitable for bone fixation. It is equally conceivable that the transverse member is suitable for fixation to the fourth layer. Provides very stable fixation to 231a and 231b, however, further fixation is required In some cases, further fixation can be achieved by using an adhesive such as bone cement. The material 221 is only the medial condyle 231b or only the lateral condyle 231a. Both can be used to fixate the artificial knee joint surface. In this case, fixation to two cortical bones on either side of the medial condyle is only possible. However, this embodiment is not the preferred choice. Furthermore, the transverse member is in contact with the medial and lateral condyles. It can also be used to secure an artificial patellar knee surface in the area between the kneecaps (not shown). .

[0176] FIG. 12a shows some femoral and / or tibial fixation devices with variable elasticity. According to an embodiment, a medical device is shown comprising a material or a portion of a material. In an embodiment, the femoral bone fixation device 201 has variable elasticity of the portion 242. The material or portion of the material has a less elastic central portion 242, The surface portion 244 of the tibial fixation device 205 has a variable elasticity. Or some portions of material 241 may be made up of multiple portions with variable elasticity. The clamping or immobilization element may be used to prevent injury from a patient who is, for example, falling or moving their hips rapidly. It can be caused by abnormal pressure being placed on the hip joint. are made of a material harder than the bone to which they are fixed, which makes the fixation device and the patient The portion 241 is generally designated I-VII. According to this embodiment, the portion 241 is made of a metallic material. It is hardened so that different cross sections have different properties. The hardening process can be carried out in some way so that there is a clear cross section, but it , the same is also considered as different properties continuously, i.e., there are parts 241 / 24 2 rather continuously changing the property throughout the parts 241 / 242, and According to another embodiment, the material is hardened or hip-jointed. It is a polymer material that can be stretched to create different properties in different parts of the prosthesis. According to an embodiment, the hip prosthesis is made of ceramic or powder-based material. In this case, the hip prosthesis may have different cross-sectional areas extending along the length axis of the sections 241 / 242. It can be hardened or sintered to produce different surface properties. Proximal Fragment III-V The prosthesis is positioned more distally on the tibia 104 from a radius adjusting member 222. The tibial fixation device 205 is configured to allow for fine movement relative to the fixation component. In the part 241, the distal part I-II, the tibial fixation device, less elastic to interact with the less elastic body at the end portion of the vise 205 This variable elasticity is the tool for absorbing the force of the chock towards the bone. Interpretation can play an important role as a means of conveying the meaning of many different ways of achieving the same goal. This preferred construction, which is coupled by a radius adjustment device, can be done, for example, 3a and 3b, the radius adjustment device 202 or expansion member 20 2 from the inside of the bone along different parts of the bone adjustment device, respectively the inside of the femur and the inside of the tibia The bone fixation devices for the femur 201 and the tibia 205 are shown. The details of the expansion members are described in more detail in Figures 16a-19b. Adjustment devices or expanding members are preferred using technology that varies elasticity. Similar results can be seen with any type of suspension, including springs and suspensions. This can also be achieved by bending the construction to achieve the same result. It may be flexible or ductile. See Figures 16a-19b.

[0177] FIG. 12b shows a medical device in side view including portions 241 / 242 with varying elasticity. The variable elasticity absorbs large pressures induced, for example, by a falling patient. Therefore, it can be very advantageous. It can be used in any of the embodiments disclosed herein.

[0178] 13a and 13b are posterior and medial views of the previously described 1 shows an embodiment of a medical device similar to the embodiment described above. The difference being that the part 251 is suitable for holding the artificial cruciate ligament 253. It consists of Part 251, which maintains the knee joint, which in turn helps stabilize the knee joint. Additionally, the proximal portion 252 of the tibial fixation device 205 may be configured to support an artificial cruciate ligament. The artificial cruciate ligament 253 thus comprises a retaining part 252 of the femur. The bone fixation device 201 has a part 251 holding the cruciate ligament at the end thereof and a tibia. It is held in place by the proximal portion 252 of the fixation device 205. 53, using the femoral and tibial fixation devices 201, 205, the artificial cruciate ligament is stabilized The bone anchoring devices 201, 205 are held in place by suitable fixation devices. Can be suitable for drilling the ligament or posterior cruciate ligament, or both In order to allow the posterior artificial cruciate ligament to be fixed to the fixation devices 201, 205 in front of the The bone fixation devices 201, 205 can be configured, particularly in the anterior-posterior direction: Preferably they are mounted at different locations.

[0179] FIG. 14 shows a cross member 221 (previously shown in FIGS. 7a, 8a, 9a, 10a, 11 and 12a). 10) shows an embodiment suitable for anchoring an artificial cruciate ligament 253. And it can be anterior or posterior cruciate ligament or both. Both the anterior-posterior and medial-lateral directions can be used as artificial cruciate ligaments. It is preferable that the support portions 256 are attached at different positions in the direction of the arrow. The transverse members provide a stable fixation element for the artificial cruciate ligament 253. At the other end, it is secured to the tibial fixation device 205. The cruciate ligament is the natural cruciate ligament, and the transverse member 221 is the natural cruciate ligament. In yet another variation, the cruciate ligaments are used to support the "natural" artificial tendon. This is a portion of the tensor patellae muscle used to create a "U"-shaped ligament.

[0180] Figure 15 shows the proximal artificial cruciate ligament, consisting of part 251, which holds the cruciate ligament. An embodiment of the bone fixation device 201 of the femur is shown, and the distal end of the artificial cruciate ligament is shown. The ends are fixed in or through bone channel B2. In the illustrated embodiment, the cruciate ligament 253 is secured by a securing button. The cruciate ligament 253 is prevented from descending posteriorly into bone channel B2.

[0181] Figure 16a shows a bone fixation element (overall application) within the cortical bone of a patient. The radius adjusting member for fixing the barrels 201, 205 is shown. Enlarged portion 654 and a radius adjustment member comprising a bone contacting surface 655 on the enlarged portion 654. Bone Contacting Surface 655 is arranged in contact with the interior of the bone for fixing the bone fixation device inside the bone. As such, the expanding portion 654 is at least partially inserted into the patient's bone and within the bone. The radius adjustment member has a centrally located longitudinal axis and is adapted to expand by Expanding portion 654 includes a plurality of expansion members 658a-d (which extend radially away from longitudinal axis 656). One advantage of using the radius adjusting member is that Bone cement (usually used for fixation purposes) is digging out the bone cement, The loosening of the fixation can trigger a macrophage response in the body. Other fixations are medically performed, such as fixations using orthopedic screws that penetrate the bone. It can also trigger a reaction in the body that rejects the foreign body of the medical device. At the same time, it is very advantageous to remove the orthopedic screws and create a stable fixation. and, furthermore, the ability to move slightly in fixation in response to exposure to forces, for example, from a falling patient. It is even more advantageous to cause the fixation with force.

[0182] The radius adjustment member according to the illustrated embodiment of FIGS. 16a / 16b includes an enlarged portion 564. 16a according to an embodiment further comprising an active device 659 adapted to operate 16b, an active device 659 is shown for expanding the expanding portion 654. a conical member 65 adapted to contact a corresponding surface 660 of the expanding portion 654; The operating device 659 is comprised of a longitudinal axis 65 which is centrally disposed in the direction of the mounting part 653. 6 engages a corresponding internal thread of the cone member 659 for moving the cone member 659 along the The internal thread 661 further comprises a rotatable internal thread 661 adapted for threading a portion of the length of the internal thread 661. 3a and 3b, the elongated member 662 is The female thread can be rotated using a tool to rotate the female thread, and this The conical member 659 has a distal end 657 and a tool engaging portion 663. The uppermost part of the device is in contact with the portion 45. According to another embodiment, the device is in operation. uses electrical means (e.g., a motor or solenoid built into the bone fixation device) The electrical means may have remote or wired control outside the patient. The device may be powered using an implantable battery that can communicate via a controller. In another embodiment, the electrical means may be powered by wireless energy (e.g., They are actuated by direct action in the form of magnetic force or induction.

[0183] Bone contact surface 655, according to the embodiment illustrated in Figs. 16a, 16b and at least in part The tapered member 664, which is also adapted to be A needle or a needle is inserted into the bone to fix the bone fixation device along the bone. In another embodiment, not shown, the bone contact surface of the medical device may be The bone-contacting surface is made up of porous micro- or nanostructures that are suitable for promoting the growth of bone. 655 is described herein with respect to the embodiment of FIGS. 16a and 16b, however. However, the conformance of the bone-contacting surface 655 is the same in all of the embodiments disclosed herein. It can be applied widely.

[0184] FIG. 16b shows the embodiment shown in FIG. 16a in which the elongated member 662 has such an internal thread. The cone member 659, which is influencing the corresponding When rotated by a rotary or electrical means, the expansion member 658-d is adapted to be a radius adjustment member. Thus, the bone-contacting surface 655 of the bone is enlarged. The enlarged portion 654 is adapted to be placed in contact with the interior of the femur bone. Ta.

[0185] 17a and 17b show a medical device embodiment similar to that disclosed with respect to FIG. 16a. 17a and 17b, the movement of the medical device is The actuator is adapted to press a conical member 659 for expanding the expanding portion 654. The elastic member is adapted to move the radius adjustment member into the bone 5. Then, the bone contact surface 6 is released, thereby elastically pressing against the inside of the bone. 55 creates a resilient pressure on the extension members 658a, 658b. The device 680 is released by turning the elongated member 662 with a tool (FIG. 17a). and 17b or the electrical means engaging tool engaging portion 663 in accordance with the illustrated embodiment. The elastic portion is designed to stabilize in response to exposure to force, for example, from a weakened patient. 17a and 17b, which allow for fixation of the radius adjustment element to bone with the ability to move slightly. In the embodiment shown in FIG. 6b, the resilient operating device 680 is a linear spring having a first resilience. Or a non-linear spring can be the first movement allowing for spring and larger forces The resilient motion device may be further implemented in other embodiments. Therefore, it can be made of an elastic material, such as an elastomer.

[0186] Figure 17b shows the expanded portion was the foamed pressed bone contact surface against the bone interior. 6 shows the medical device with the resilient motion device 680 released.

[0187] 18a and 18b show that expanding portion 654 is a deformable expanding portion 65 According to an embodiment of the present invention, a radius adjusting member is shown, in which the expanding portion is variable. The bone contact surface is then expanded by a deformable expanding portion 654 that is shaped like a bone. Surface 655 is positioned in contact with the interior of the femoral bone for securing the radius adjustment member to the femoral bone. The deformable expanding portions are positioned so that they are in contact with the interior of the bone. 654 is a bone contact pushing portion 654 radially expanding at the distal end 657. by a screw member 661 pulling the surface 655 towards the expanding mounting portion 653 It deforms at deformation position 684 .

[0188] FIG. 18b shows the deformable expanding portion 654 pressing the bone contact surface 65 against the interior of the bone. 5 shows the medical device expanded by pressing 5.

[0189] FIG. 19a shows a semi-circular cross-section of a radius adjustment member according to an embodiment having a centrally located longitudinal axis 656. 6 shows a radius adjustment member, wherein the radius adjustment member has a plurality of enlarged portions 654-d. and extending axially along the longitudinal axis 656 of the medical device. ad extends axially along the longitudinal axis 656 of the radius adjustment member, and the enlarged portion radially extending portions 654a-d independently of each other to allow different expansions of the respective expanding portions 654a-d. Different magnifications are used to accommodate the uneven surfaces of the internal anatomy of the bone. The different expanding parts can be seen as expanding parts 654a-d. As the bone contact surface 655 of the particular enlarged portion comes into contact with the bone inside the bone, One expanding portion 654a expands until positioned, and then the other The enlarged portions 654 bd are arranged such that their respective bone-contacting surfaces are in contact with the interior of the bone. Each expanding section has four expanding members 658a. -d, each of which corresponds to the inclined surface 696 of the conical member 659. 660, and the conical member 659 moves in the direction of the mounting portion 653. The expansion member is pressed radially from the shaft 656 .

[0190] FIG. 19b shows the enlarged portions 654a-d expanding and contacting the bone contact surface 664 with the interior of the bone. 55 is a medical device pressing against the

[0191] No embodiment or part of the embodiment may be used in any way or manner. Please note that all parts of the All cases must be seen as part of a general description. It is possible to combine them in any way.

Claims

1. 1. A fixation device for fixating a patient's knee prosthesis, comprising: a plurality of extension portions having bone-contacting surfaces; The extension portion is configured to be at least partially inserted into the patient's tibia or femur and expand within the tibia or femur, thereby positioning the bone contacting surface in direct or indirect contact with the medial side of the tibia or medial side of the femur to secure the fixation device; a second joint disposed in the femur or the tibia, allowing angular adjustment between the first and second portions of the fixation device; a first joint located in the center of a normal knee joint, and a second joint located in the femur or the tibia, the first portion of the fixation device configured to extend to the center of the femur or the tibia, and the second portion configured to extend to the first joint; Fixed device.

2. 10. The fixation device of claim 1, wherein the plurality of expansion portions are arranged along a length of the fixation device, and the expansion portions are configured to radially expand independently of one another to allow individual expansion of the plurality of expansion portions.

3. The fixation device of claim 1 , wherein one of two adjacent extension portions of the plurality of extension portions is radially expanded and the other of the two adjacent extension portions is radially fixed.

4. The fixation device of claim 1 , wherein the second joint is configured to allow adjustment of the prosthetic knee joint.

5. The fixation device of claim 1 , wherein the second joint is configured to be manually adjustable.

6. The fixation device of claim 1 further comprising electrical means integrated into said fixation device.

7. 7. The fixation device of claim 6, wherein said electrical means is adapted to operate by wireless energy, including magnetic force and induction, acting on said electrical means.

8. The fixation device of claim 1 , comprising a resilient manipulation device configured to manipulate the expansion portion by applying a resilient force to the expansion portion when the fixation device is implanted.

9. The fixation device of claim 8 , wherein the resilient operating device is a spring.

10. The fixation device of claim 8 , further comprising an adjustment device for adjusting the elastic force of the elastic manipulation device to adjust the force applied to the tibia by the expansion portion.

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