Medical devices, systems, and methods for using tissue anchors

摘要

Medical devices, systems and related methods for delivering a tissue anchor. The medical devices generally comprise a needle and a sheath that assist in retaining the tissue anchor at the distal end of the need during manipulation of the medical device. The medical systems include one or more tissue anchors in conjunction with one of the medical devices.

主权项

1. A medical system comprising:
a tissue anchor having an anchoring member connected to a suture; a needle having a length and a needle lumen slidably receiving the tissue anchor wherein a distal end of the needle defines a needle slot sized to receive the suture of the tissue anchor, the needle and needle lumen defining a longitudinal axis; and a flexible sheath having a sheath lumen sized to slidably receive the needle, the sheath extending along the length of the needle, a distal end of the sheath defining a sheath slot sized to receive the suture therein, the sheath slot having a proximal end and a distal end, the sheath slot extending through the distal end of the sheath and sized along its entire length to frictionally engage the suture within the sheath slot, wherein the medical system is operable between a delivery configuration and a deployed configuration, the needle being substantially contained within the sheath lumen in the delivery configuration, the needle projecting beyond the distal end of the sheath in the deployed configuration, and wherein the sheath frictionally engages the suture within the sheath slot in the delivery configuration.