[특허]Adjustable devices for treating arthritis of the knee

[미국특허] Adjustable devices for treating arthritis of the knee 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/80 A61B-017/88 A61B-017/72 A61B-006/12 A61B-017/16 A61F-002/38 A61B-017/00 A61B-017/68 A61B-017/56 A61B-017/70
출원번호	US-0379742 (2013-10-28)
등록번호	US-10130405 (2018-11-20)
국제출원번호	PCT/US2013/067142 (2013-10-28)
국제공개번호	WO2014/070681 (2014-05-08)
발명자 / 주소	Skinlo, David Buford, Thomas B. Akyuz, Ephraim Weisel, Thomas Pisarnwongs, Roger Beckett, Adam G. Gilbert, Jeffrey Lee Liu, Frank Yan Weber, Urs Roschak, Edmund J. Walker, Blair Pool, Scott Dahl, Mark T.
출원인 / 주소	NuVasive Specialized Orthopedics, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 61

초록 ▼

A method of changing a bone angle includes creating an osteotomy between a first portion and a second portion of a tibia of a patient; creating a cavity in the tibia by removing bone material along an axis extending in a substantially longitudinal direction from a first point at the tibial plateau to a second point; placing a non-invasively adjustable implant into the cavity, the non-invasively adjustable implant comprising an adjustable actuator having an outer housing and an inner shaft, telescopically disposed in the outer housing, and a driving element configured to be remotely operable to telescopically displace the inner shaft in relation to the outer housing; coupling one of the outer housing or the inner shaft to the first portion of the tibia; coupling the other of the outer housing or the inner shaft to the second portion of the tibia; and remotely operating the driving element to telescopically displace the inner shaft in relation to the outer housing, thus changing an angle between the first portion and second portion of the tibia.

대표청구항 ▼

1. A method of changing a bone angle, the method comprising: creating an open wedge osteotomy between a first portion and a second portion of a tibia of a patient, such that the first portion of the tibia remains hingedly attached to the second portion of the tibia, and an exposed surface of the second portion of the tibia opposes an exposed surface of the first portion of the tibia, wherein said exposed opposing surfaces are created by the open wedge osteotomy;creating an intramedullary cavity in the tibia by removing bone material along an axis extending in a substantially longitudinal direction from a first point at the tibial plateau to a second point;placing a non-invasively adjustable implant into the intramedullary cavity, the non-invasively adjustable implant comprising: an adjustable actuator having an outer housing and an inner shaft telescopically disposed in the outer housing; an upper bracket attached to the inner shaft; and a magnetically adjustable driving element configured to be remotely operable to telescopically displace the inner shaft in relation to the outer housing;after placing the non-invasively adjustable implant in the intramedullary cavity coupling a lower bracket to the outer housing of the non-invasively adjustable implant and to the exposed surface of the first portion of the tibia created by the open wedge osteotomy;coupling the upper bracket to the exposed surface of the second portion of the tibia created by the open wedge osteotomy; andremotely operating the driving element to telescopically displace the inner shaft in relation to the outer housing, thus changing an angle of the open wedge osteotomy defined between the exposed opposing surfaces of the first portion and second portion of the tibia. 2. The method of claim 1, wherein the remotely operating step increases the angle between the exposed opposing surfaces of the first portion and second portion of the tibia. 3. The method of claim 1, wherein the remotely operating step decreases the angle between the exposed opposing surfaces of the first portion and second portion of the tibia. 4. The method of claim 1, wherein the remotely operating step is performed a plurality of times. 5. The method of claim 4, wherein the remotely operating step is performed a plurality of times over of period of between one day and one month. 6. The method of claim 4, wherein a gap (G) measured at a medial edge of the osteotomy is increased a total of between 1 mm and 20 mm during the plurality of times. 7. The method of claim 6, wherein the gap (G) is increased at an average gap increase rate (GIR) of less than or equal to two millimeters per day during the plurality of times. 8. The method of claim 1, wherein a gap (G) measured at a medial edge of the osteotomy is increased at a positive distance less than or equal to two millimeters during a twenty-four hour period. 9. The method of claim 1, further comprising a step of monitoring the growth of bone via radiography. 10. The method of claim 1, further comprising a step of allowing bone material to consolidate between the first portion and second portion of the tibia. 11. The method of claim 1, further comprising a step of surgically removing the non-invasively adjustable implant from the tibia. 12. The method of claim 1, wherein the implant further comprises a radially-poled permanent magnet and the method further comprises a step of removing at least the radially-poled permanent magnet from the patient. 13. The method of claim 1, wherein the remotely operating step 1s performed with the patient awake. 14. The method of claim 13, wherein the amount chosen to telescopically displace the inner shaft is at least partially determined by interpreting feedback from the awake patient. 15. The method of claim 1, wherein the driving element comprises a permanent magnet. 16. The method of claim 15, wherein the permanent magnet is a radially poled rare earth magnet. 17. The method of claim 15, wherein the remotely operating step further comprises placing an external adjustment device capable of causing a moving magnetic field in the proximity of the patient and causing the permanent magnet to rotate.

이 특허에 인용된 특허 (61) 인용/피인용 타임라인 분석

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[미국특허] Adjustable devices for treating arthritis of the knee 원문보기

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[미국특허] Adjustable devices for treating arthritis of the knee 원문보기

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