Endoscopic tissue anchor deployment
View Patent ↗An endoscopic tissue anchor deployment device includes a handle, an elongated shaft defining an internal lumen, and an end effector attached to the distal end of the elongated shaft. A tissue anchor catheter is removably inserted through the lumen of the elongated shaft, the catheter having a tissue anchor assembly that is deployable from its distal end. In some embodiments, the handle includes a pin and track assembly that define a series of handle actuation steps corresponding to deployment steps for the deployment device end effector and the tissue anchor catheter. In some embodiments, the handle includes a catheter stop member that prevents movement of the tissue anchor catheter under certain circumstances, and a handle stop member that prevents actuation of the handle under certain circumstances.
1. Apparatus for endoscopically manipulating tissue comprising:
an elongated flexible shaft extending from a handle, with a lumen extending through the elongated flexible shaft;
an end effector located at or near a distal of the elongated flexible shaft, the end effector including first and second members adapted to hold tissue;
a needle deployment assembly having a needle movable out of a distal end of the lumen, and a needle launch button linked to the needle and supported on the handle;
with the handle having a housing, a handle body pivotally attached to the housing, a handle lock mechanism for holding the handle body in a fixed position, and a handle stop member pivotally attached to the housing, the handle stop member pivotal via movement of the needle launch button from a first position wherein the handle stop member prevents the handle body from moving toward the housing, and a second position wherein the handle stop member allows the handle body to move toward the housing to release the handle lock mechanism.
2. The apparatus of claim 1 , wherein said handle stop member includes a handle stop body and a spring located between the handle stop body and the housing of the handle providing a force biasing the handle stop member to the first position.
3. Apparatus for endoscopic surgery, comprising:
a tubular body, a handle having a housing attached to the tubular body, and a lumen extending through the tubular body;
a tissue grasper at a distal end of the tubular body;
a needle deployment assembly at least partially in the lumen and having a hollow needle and two or more tissue anchors deployable through the hollow needle, the needle deployment assembly including a needle launch button movable into an advanced position and into a retracted position;
a handle body pivotally attached to the housing;
a handle stop member pivotally attached to the housing;
a handle lock mechanism linked to the handle body, with the handle lock mechanism movable to a lock position wherein the handle lock mechanism prevents movement of the handle body away from the housing, and to an unlock position wherein the handle lock mechanism allows movement of the handle body towards or away from the housing, and with the handle lock mechanism movable into the unlock position by moving the handle body towards the housing; and
with the handle stop member preventing movement of the handle body towards the housing to prevent the handle lock mechanism from moving into the unlock position, unless the needle deployment button is in the retracted position.
4. Surgery apparatus, comprising:
a tubular body;
a handle having a housing attached to the tubular body;
a handle body pivotally attached to the housing;
a tissue tool at a distal end of the tubular body;
a needle deployment assembly having a tubular sheath at least partially within the tubular body, a hollow needle and a launch button;
a handle lock mechanism linked to the handle body, with the handle lock mechanism movable into a first position wherein the handle lock mechanism limits movement of the handle body, and with the handle lock mechanism movable into a second position wherein the handle lock mechanism does not limit movement of the handle body; and
a handle stop member pivotally attached to the housing and positioned to prevent the handle body from moving towards the housing, unless the launch button is in the retracted position.