Method and apparatus for force redistribution in articular joints
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-002/38
A61B-017/56
출원번호
US-0002829
(2010-08-27)
등록번호
US-9795410
(2017-10-24)
국제출원번호
PCT/US2010/046996
(2010-08-27)
§371/§102 date
20110106
(20110106)
국제공개번호
WO2011/025959
(2011-03-03)
발명자
/ 주소
Shenoy, Vivek
Deem, Mark
Gifford, III, Hanson S.
출원인 / 주소
Cotera, Inc.
대리인 / 주소
Downs Rachlin Martin PLLC
인용정보
피인용 횟수 :
0인용 특허 :
286
초록
Pathologies of joints arising from improper force distributions are addressed by displacement of targeted connective and muscle tissues surrounding the joint in order to realign force vectors and alter moment arms loading the joint.
대표청구항▼
1. An apparatus for treating an articular joint to effect force distribution in the joint, said joint including at least first and second bones with facing articular surfaces, the bones being positioned with respect to one another by associated muscle and connective tissues, said tissues comprising
1. An apparatus for treating an articular joint to effect force distribution in the joint, said joint including at least first and second bones with facing articular surfaces, the bones being positioned with respect to one another by associated muscle and connective tissues, said tissues comprising target tissues for therapy, the apparatus comprising: a bearing member configured and dimensioned for placement in a therapeutic location proximate at least one said target tissue to displace the target tissue at least about 10 mm to about 30 mm from its natural path to a therapeutic path when placed in said therapeutic location;a rounded and smooth beating surface disposed on the bearing member, the bearing surface being free of gaps, holes or bone fixation means and configured to atraumatically engage the target tissue and to permit movement of the target tissue; anda support member supporting the bearing member, said support member having a fixation portion and a displacement portion, with said bearing member being disposed in the displacement portion;wherein the support member further comprises a spanning section between the fixation portion and the displacement portion;wherein the fixation portion is configured and dimensioned to be secured against the femur cranially with respect to the femoral condyle,the spanning section is configured to extend vertically between the fixation portion and the displacement portion, andthe displacement portion is configured and dimensioned to displace the target tissue laterally; andwherein the target tissue comprises the iliotibial band. 2. The apparatus of claim 1, wherein the spanning section is configured and dimensioned to avoid select anatomical features located between a fixation location and target tissue displacement location. 3. The apparatus of claim 1, wherein fixation holes are provided only in the fixation portion. 4. The apparatus of claim 1, wherein the displacement portion is configured and dimensioned to further displace the target tissue anteriorly. 5. The apparatus of claim 1, wherein: the fixation portion defines fixation holes; andthe spanning section is free of fixation holes. 6. The apparatus of claim 5, wherein said fixation holes are each formed around a hole axis and the spanning section is displaced from said fixation holes in a direction perpendicular to the fixation hole axes. 7. An apparatus for treating an articular joint to effect force distribution in the joint, said joint including a human knee with its associated muscle and connective tissues, said tissues comprising target tissues for therapy, the apparatus comprising: a bearing member configured and dimensioned for placement in a therapeutic location proximate at least one said target tissue to displace the target tissue at least about 10 mm to about 30 mm from its natural path to a therapeutic path when placed in said therapeutic location;a rounded and smooth bearing surface disposed on the bearing member, the bearing surface being free of gaps, holes or bone fixation means and configured to atraumatically, slidingly engage the target tissue and to permit movement of the target tissue there across; anda support member supporting the bearing member, said support member having a fixation portion configured and dimensioned to be secured against the femur cranially with respect to the femoral condyle, and a displacement portion configured and dimensioned to be positioned over lateral femoral condyle with the fixation portion secured against the femur cranial to the femoral condyle and to displace the target tissue laterally, said bearing member being disposed in the displacement portion. 8. The apparatus of claim 7, wherein the support member further comprises a spanning section between the fixation portion and the displacement portion, said spanning section configured and dimensioned to extend caudally from the fixation portion to position the displacement portion over the lateral femoral condyle, and wherein said spanning section is further configured and dimensioned to extend laterally from the fixation portion and to position the displacement portion laterally spaced from the lateral femoral condyle. 9. An apparatus for treating a human knee joint and associated muscle and connective tissues to effect force distribution in the joint, said tissues comprising target tissues for therapy, the apparatus comprising a prosthesis configured to be mounted to one of the femur or tibia, said prosthesis comprising: a displacement portion including a rounded and smooth bearing surface configured to atraumatically engage and displace the target tissue from a natural path to a therapeutic path;a single fixation portion configured and dimensioned to be secured against only one of the femur or the tibia proximate the knee joint; anda spanning section extending between said single fixation portion and the displacement portion;wherein the spanning section and displacement portion are configured and dimensioned in combination to position the bearing surface to displace the target tissue from the natural path to the therapeutic path with said single fixation portion secured against one of the femur or tibia. 10. The apparatus of claim 9, wherein the bearing surface is free of gaps, holes or bone fixation means and further configured to permit movement of the target tissue there across. 11. The apparatus of claim 9, wherein said fixation portion is configured and dimensioned to be secured against the femur cranially with respect to the femoral condyle and said displacement portion is configured and dimensioned to displace the target tissue about 10 mm to about 30 mm laterally. 12. The apparatus of claim 11, wherein said spanning section is configured and dimensioned to extend caudally from the fixation portion and to position the displacement portion over the lateral femoral condyle. 13. The apparatus of claim 9, wherein the fixation portion is configured and dimensioned to be secured against the tibia, and the spanning section is configured and dimensioned to extend cranially from the fixation portion. 14. The apparatus of claim 13, wherein the displacement portion is configured and dimensioned to extend from the spanning section over a central portion of the tibial condyle proximate the patellar tendon. 15. The apparatus of claim 14, wherein the displacement portion extends from the spanning section so as to be insertable under the patellar tendon from a medial side thereof. 16. The apparatus of claim 15, wherein the bearing surface of the displacement portion is cranially displaced from the fixation portion. 17. The apparatus of claim 9, wherein the fixation portion defines bone screw holes each formed around a hole axis and the spanning section is displaced from said bone screw holes in a direction perpendicular to the bone screw hole axes. 18. A prosthesis for treating disorders of the knee in the medial compartment of the knee, the prosthesis comprising: a fixation portion configured to be mounted to the femur at a fixation site proximate the lower femoral extremity on a lateral side of the femur, the fixation portion including bone screw holes;a spanning section configured and dimensioned to extend caudally and laterally from the fixation portion, when mounted at the fixation site, in a direction towards the lateral femoral condyle, the spanning section being free of fixation holes; anda displacement portion with a smooth outer bearing surface free of fixation holes and discontinuities having a curvature around an axis generally parallel to the femoral shaft when the fixation portion is mounted at the fixation site, the displacement portion is configured and dimensioned to (i) extend from the spanning section further laterally and caudally over the lateral femoral condyle and under the iliotibial band and in engagement therewith, and (ii) displace the iliotibial band laterally sufficiently to alter the location, angle or magnitude of a moment exerted thereby on the knee so as to achieve a therapeutic effect in medial compartment of the knee when mounted at the fixation site. 19. The prosthesis of claim 18, wherein the outer bearing surface further has a curvature around an axis generally perpendicular to the first axis of the femoral shaft. 20. The prosthesis of claim 18, wherein the displacement portion is configured and dimensioned to displace the iliotibial band laterally from about 10 mm to about 30 mm from its natural anatomic path. 21. The prosthesis of claim 18, wherein the fixation portion bone screw holes are each formed around a hole axis and the spanning section is displaced from said bone screw holes in a direction perpendicular to the bone screw hole axes.
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