Stylet Locking Mechanism For Medical Delivery Devices
AssigneeCook Medical Technologies LLC
InventorsVihar C. Surti, Ashwin Rajan Sakhare
Life of this patent
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Abstract
A stylet locking mechanism for preventing axial movement of a stylet relative to a needle of a medical delivery device is disclosed. The locking mechanism comprises first and second ends that may be removably attached to the device, and a hinge for allowing the locking mechanism to be disengaged from a locking position without being completely disconnected from the delivery device.
Claims18
A locking mechanism for a medical delivery device comprising an elongate inner member movably disposed within an elongate outer member, and a deployable device disposed within the outer member near a distal end of the inner member, wherein movement of the inner member in a distal direction relative to the outer member deploys the deployable device from a distal end of the outer member, the locking mechanism comprising:
- a body having a first end adapted to be removably connected to an end cap of the inner member, a second end adapted to be removably connected to a hub of the outer member, and a hinge for permitting movement of the first end relative to the second end,
- wherein axial movement of the inner member relative to the outer member is prevented when the first end is connected to the inner member and the second end is connected to the outer member,
- wherein axial movement of the inner member relative to the outer member is permitted when one of the first end and the second end is disconnected from the delivery device, and the other of the first end and the second end is connected to the delivery device, and
- wherein the locking mechanism is detached from the delivery device when the first end and the second end are each disconnected from the delivery device.
A locking mechanism for a tissue anchor delivery device comprising an elongate stylet movably disposed within an elongate needle, the needle being movably disposed within an elongate sheath, a handle operably connected to the needle and the sheath and configured to provide axial movement therebetween, and a tissue anchor disposed within the needle near a distal end of the stylet, wherein movement of the stylet in a distal direction relative to the needle deploys the tissue anchor from a distal end of the needle, the locking mechanism comprising:
- a first portion comprising a first end adapted to be removably connected to an end cap fixedly connected to a proximal end of the stylet;
- a second portion comprising a second end adapted to be removably connected to a hub of the handle, the hub being operably connected to the needle;
- and
- a hinge connecting the first portion and the second portion, the hinge permitting the first portion to pivot relative to the second portion,
- wherein the locking mechanism is configured to be fully engaged with the delivery device, partially engaged with the delivery device, and fully disengaged from the delivery device,
- wherein the locking mechanism is fully engaged with the delivery device when the first end and the second end are each connected to the delivery device,
- wherein the locking mechanism is partially engaged with the delivery device when one of the first end and the second end is disconnected from the delivery device, and the other of the first end and the second end is connected to the delivery device;
- wherein the locking mechanism is fully disengaged from the delivery device when the first and second ends are each disconnected from the delivery device;
- wherein axial movement of the stylet relative to the needle is permitted when the locking mechanism is either partially engaged with or fully disengaged from the delivery device;
- wherein axial movement of the stylet relative to the needle is prevented when the locking mechanism is fully engaged with the delivery device;
- and
- wherein the hinge permits the locking mechanism to move between the fully engaged and partially engaged configurations.
Dependencies are inferred from the claim text.