Rotation Medical, Inc.

John Quackenbush

Charles L Euteneuer

Nathaniel Z Zenz-Olson

Jeff Sims

Rebecca McCarville

Duane Frion

Diane M Feehan

Craig Van Kampen

Rebecca Mccarville

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.

Methods and apparatus for deploying sheet-like materials

An implant delivery system for delivering a sheet-like implant is disclosed. The implant delivery system includes a distal guidewire port for receiving the proximal end of guidewire after the guidewire distal end has been affixed to a first point on bone or other tissue. The implant delivery system is tracked over the guidewire to a selected position defined by the guidewire attachment. The device includes an implant spreader assembly disposed proximate the distal end of a delivery shaft. The implant spreader assembly includes a first arm and a second arm. The arms are coupled to the delivery shaft such that the first arm and second arm are moveable between a closed position and an open position. When pivoting to the open position the distal end of each arm travels in a generally transverse direction to spread a sheet-like implant.

Methods and apparatus for delivering and positioning sheet-like materials in surgery

A guidewire for use with an implant delivery system in delivering a sheet-like implant is disclosed. The guidewire can include a distal tissue fixation member for releasable connection to a first location proximate a treatment site. An implant delivery system can include a distal guidewire port for receiving the proximal end of the guidewire. The implant delivery system is tracked over the guidewire to a selected position defined by the guidewire attachment. The tissue fixation member includes means for temporarily or reversibly fixing the distal end of the guidewire to tissue, such as bone. The means for affixing can include a K-wire, a screw, a pin or other fixation member.

Guidewire having a distal fixation member for delivering and positioning sheet-like materials in surgery

An implant delivery system for delivering a sheet-like implant is disclosed. The device includes an implant spreader assembly disposed proximate the distal end of a delivery shaft. The implant spreader assembly includes a first arm and a second arm. The arms are coupled to the delivery shaft such that the first arm and second arm are moveable between a closed position and an open position. When the first and second arms are in the closed position, the arms extend generally in the longitudinal direction. When pivoting to the open position the distal end of each arm travels in a generally transverse direction to spread a sheet-like implant.

Methods and apparatus for delivering and positioning sheet-like materials

A tissue marker assembly which can be useful with an implant delivery system for delivering a sheet-like implant is disclosed. The tissue marker assembly can include a delivery sleeve with a tissue marker slidably disposed within a lumen therethrough. A proximal handle can be coupled to the tissue marker and delivery sleeve, having a first part and a second part. The second part of the proximal handle can be releasably attached to the tissue marker proximal end so that the second part can be removed to allow the delivery sleeve to be removed proximally over the tissue marker after it is affixed to tissue. The distal portion of the marker can include a plurality of longitudinally extending arms when unconstrained project outward from the shaft to retain the marker's position in tissue.

Growing community of inventors

North Oaks, MN, United States of America

John Quackenbush