Mechanical deployment device for hip all-suture anchor
A deployment device for an all suture anchor having a braided anchor and a suture filament extending through the braided anchor. A fork extends longitudinally through the body of the device and is moveable between an extended position and a withdrawn position to position and then release the braided anchor. A ratchet wheel drives a spool coupled to the ratchet wheel by a frangible link to wind up the suture filament to deploy the braided anchor. When sufficient tension is achieved to fully deploy the braided anchor, the frangible link will break, thereby releasing the suture filament to leave the deployed braided anchor in place with the suture filament extending from the pilot hole. All operations are accomplished by one lever that selectively withdraws the fork, rotates the ratchet wheel, and then allows release of the filament with the use of just a single hand.
1 . A deployment device for an all suture anchor having a braided anchor and a suture filament extending through the anchor, comprising:
a body;
a fork extending longitudinally through the body and moveable between an extended position and a withdrawn position;
a ratchet wheel rotatably mounted to the body;
a spool coupled to the ratchet wheel by a frangible link; and
a lever coupled to the fork via a link that is pivotally coupled at a first end to the lever and at a second end to a bearing member of the fork to move the fork longitudinally within the body from the extended position to the withdrawn position and to the ratchet wheel to rotate the ratchet wheel,
wherein the bearing member includes a notch that is engaged by the link when the lever is in an open position.
2 . The device of claim 1 , wherein the body includes a pawl positioned to selectively engage the ratchet wheel.
3 . The device of claim 2 , wherein the body includes a first fence preventing the pawl from engaging the ratchet wheel when the lever is an initial position.
4 . The device of claim 3 , wherein the body includes a first fence preventing the pawl from engaging the ratchet wheel when the lever is an open position.
5 . The device of claim 4 , wherein the pawl is free to engage the ratchet wheel when the lever is a closed position.
6 . The device of claim 5 , further comprising a latch that can releasably secure the latch in the initial position.
7 . The device of claim 6 , further comprising a detent associated with the body and positioned to lock the fork in the withdrawn position.
8 . The device of claim 7 , wherein the fork moves a distance of 14 millimeters from the extended to the withdrawn position.
9 . The device of claim 8 , wherein the frangible link is configured to break in response to a force of 40 pounds of tension on a filament captured by the spool.