Methods and apparatus for deploying sheet-like materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/88
A61F-002/08
A61B-017/064
A61B-017/068
A61F-002/00
A61B-017/30
출원번호
US-0794673
(2010-06-04)
등록번호
US-9179961
(2015-11-10)
발명자
/ 주소
Euteneuer, Charles L.
McCarville, Rebecca
Frion, Duane
Zenz-Olson, Nathaniel
Feehan, Diane M.
Quackenbush, John
출원인 / 주소
Rotation Medical, Inc.
대리인 / 주소
Seager, Tufte & Wickhem LLP
인용정보
피인용 횟수 :
5인용 특허 :
286
초록▼
Implant delivery systems for delivering sheet-like implants include a delivery shaft, an implant expander, a sheath, and a sheet-like implant. In some embodiments, the delivery shaft has a proximal end and a distal end. The implant expander is mounted to the distal end of the delivery shaft. The imp
Implant delivery systems for delivering sheet-like implants include a delivery shaft, an implant expander, a sheath, and a sheet-like implant. In some embodiments, the delivery shaft has a proximal end and a distal end. The implant expander is mounted to the distal end of the delivery shaft. The implant expander includes a central portion and a plurality of leg portions radiating from the central portion. The implant expander is evertable between an unstressed configuration in which a distal surface of the implant expander defines a concave surface, and a first compact configuration in which the distal surface of the implant expander defines a convex surface. The implant expander has a first lateral extent when the implant expander is free to assume the unstressed configuration. The sheath defines a lumen having a lumen diameter. At least a portion of the delivery shaft is slidably disposed in the lumen. The lumen diameter is smaller than the first lateral extent of the implant expander so that the sheath holds the implant expander in the first compact configuration when slidably disposed therein. The sheet-like implant overlays at least a portion of the distal surface of the implant expander with portions of the sheet-like implant extending between the leg portions of the implant expander and the sheath. Methods of treating a rotator cuff of a shoulder are also disclosed.
대표청구항▼
1. An implant delivery system for delivering a sheet-like implant, the implant delivery system comprising: a delivery shaft having a proximal end and a distal end;an implant expander, mounted to the distal end of the delivery shaft, including a central portion, a plurality of leg portions radiating
1. An implant delivery system for delivering a sheet-like implant, the implant delivery system comprising: a delivery shaft having a proximal end and a distal end;an implant expander, mounted to the distal end of the delivery shaft, including a central portion, a plurality of leg portions radiating from the central portion, and a sharpened distal tip extending distally from a distal surface of the central portion of the implanted expander, the implant expander being evertable between an unstressed configuration in which a distal surface of the implant expander defines a concave surface and a first compact configuration in which the distal surface of the implant expander defines a convex surface, the plurality of leg portions being curved in the unstressed configuration and independently flexible, the implant expander having a first lateral extent when the implant expander is free to assume the unstressed configuration, the plurality of leg portions each including a distal portion configured to engage with a sheet-like implant when in the unstressed configuration;a sheath defining a lumen having a lumen diameter, at least a portion of the delivery shaft slidably disposed in the lumen, the lumen diameter being smaller than the first lateral extent of the implant expander so that the sheath holds the implant expander in the first compact configuration when slidably disposed therein; anda sheet-like implant overlaying at least a portion of the distal surface of the implant expander with portions of the sheet-like implant extending between the leg portions of the implant expander and the sheath;wherein the sharpened distal tip penetrates through the sheet-like implant;wherein the delivery shaft distal end is fixed to the central portion of the implant expander to urge relative movement between the implant expander and the sheath such that the implant expander and the sheet-like implant can be advanced through a distal opening defined by the sheath so the implant expander is free to assume a deployed configuration. 2. The delivery system of claim 1, wherein the sharpened distal tip is configured to hold the position of delivery system when the sharpened distal tip is held against a target tissue. 3. The delivery system of claim 1, wherein the implant expander generally conforms to the surface of a target tissue when the implant expander assumes the deployed configuration. 4. The delivery system of claim 1, wherein the distal surface of the implant expander defines a concave surface when the implant expander is assuming the deployed configuration and the target tissue has a generally convex shape. 5. The delivery system of claim 1, wherein a free end of each leg portion is disposed distally of the central portion when the implant expander is assuming the deployed configuration and the target tissue has a generally convex shape. 6. The delivery system of claim 1, wherein the implant expander causes the sheet-like implant to conform to the surface of a target tissue when the implant expander assumes the deployed configuration. 7. The delivery system of claim 1, wherein the distal surface of the implant expander defines a concave surface when the implant expander is assuming the second compact configuration. 8. The delivery system of claim 1, wherein the implant expander is integrally formed of a single material. 9. The delivery system of claim 1, wherein the sheet-like implant defines a plurality of pockets, each pocket being dimensioned to receive a distal portion of a leg portion of the implant expander. 10. The delivery system of claim 9, wherein the sheet-like implant can be selectively separated from the implant expander by withdrawing the distal portions of the leg portions from the pockets. 11. The delivery system of claim 1, wherein the implant expander further comprises a plurality of retainers to engage the sheet-like implant such that the sheet-like implant moves when the implant expander is moved. 12. The delivery system of claim 11, wherein the sheet-like implant can be selectively separated from the implant expander by withdrawing the retainers from the sheet-like implant. 13. The delivery system of claim 1, wherein the distal portion of each of the leg portions is configured to urge the implant to a deployed configuration when in the unstressed configuration. 14. The delivery system of claim 1, wherein a free end of each leg portion is disposed distally of the central portion when the implant expander is assuming the unstressed configuration. 15. The delivery system of claim 14, wherein the free end of each leg portion is disposed proximally of the central portion when the implant expander is assuming the first compact configuration. 16. The delivery system of claim 15, wherein the implant expander assumes a second compact configuration when the implant expander is retracted proximally into the lumen of the sheath after having assumed the deployed configuration. 17. The delivery system of claim 16, wherein the free end of each leg portion is disposed distally of the central portion when the implant expander is assuming the second compact configuration.
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