Surgical helical fastener with applicator
View Patent ↗A helical fastener having a high retentive surface area is provided and has a first end for enhancing penetration into tissue and a second end comprising a coil sectioning a diameter of the fastener for receiving longitudinal and rotational forces. The helical fasteners are attached to body tissue by a fastener applicator having a proximal portion comprising a handle and an actuator and an elongate distal portion for housing a plurality of fasteners. A transferring action of the actuator provides longitudinal and rotational movement of the fasteners out of the distal portion and into body tissue.
1. An applicator for attaching fasteners to body tissue comprising:
a distal portion having an elongate outer tube, a connecting end and a terminal end:
a proximal portion having a handle and an actuator, the proximal portion attached to the connecting end of the distal portion; and
a rotator for receiving a plurality of fasteners and for cooperating with the actuator, the rotator configured to reside within and extend substantially the length of the outer tube and
means for threading and ejecting the fastener out of the distal end.
2. The applicator of claim 1 , wherein the threading and ejecting means is a thread form contained in an interior of the terminal end for engaging the plurality of fasteners.
3. The applicator of claim 2 , wherein the thread form is an interlock spring fixedly retained in the interior of the terminal end.
4. The applicator of claim 1 , wherein the threading and ejecting means is a nose piece attached to the terminal end, the nose piece having structure projecting perpendicularly toward a longitudinal axis of the outer tube for engaging the plurality of fasteners.
5. The applicator of claim 1 , wherein the distal portion and the proximal portion are releasably secured together.
6. The applicator of claim 5 , wherein the distal portion is disposable and the proximal portion is reusable.
7. An applicator for attaching fasteners to body tissue comprising:
a distal portion having an elongate outer tube, a connecting end and a terminal end;
a proximal portion having a handle and an actuator, the proximal portion attached to the connecting end of the distal portion and the actuator including:
a lever having a first and a second end, the lever pivotably attached about a midpoint to the handle, the first end of the lever adapted to be gripped by hand, a lead screw rotatably attached to an interior of the handle, a nut driver, the second end of the lever pivotably attached to the nut driver, the nut driver adapted to travel along the lead screw, thereby turning the lead screw, the lead screw attached to the rotator so that as the lever is depressed by hand the nut driver will travel along the lead screw toward the rotator thereby turning the rotator in the process;
a rotator for receiving a plurality of fasteners and for cooperating with the actuator, the rotator configured to reside within and extend substantially the length of the outer tube; and
means for threading and ejecting the fastener out of the terminal end.
8. The applicator of claim 7 , wherein the lead screw is a high helix lead screw.
9. The applicator of claim 8 , the lever has a midsection extension.
10. The applicator of claim 9 , further comprising gear teeth formed within the interior of the handle.
11. The applicator of claim 10 , further comprising a spring loaded pawl pivotally attached to the midsection extension for engaging the gear teeth.