Surgical ratchet tool, system and method
AssigneeAesculap Implant Systems, LLC
InventorAndrew Dauster
Life of this patent
Estimating the term…
Abstract
A surgical ratchet tool and system along with associated methods are disclosed. The surgical ratchet tool can include a relatively simple encompassing member that included a pawl extending into the opening for directly contacting a nut during surgery. The ratchet tool and system can be used for various types of surgery in which easy sterilization and a reduced profile for a ratchet tool is desired. For example, the ratchet tool can be used during surgery for adjustment of a spinal implant, where manipulation of a nut located on a downtube connected to a screw and/or spinal rod is desired. The encompassing member and pawl can be constructed/molded as a single piece unitary structure. A first handle and possibly a second handle can extend from an outer periphery of the encompassing member.
Claims23
A surgical ratchet, comprising:
- an encompassing member having an inner peripheral surface, an outer peripheral surface opposed to the inner peripheral surface, and an opening;
- a first handle extending away from the outer peripheral surface of the encompassing member, the handle having a proximal end and a distal end opposite the proximal end with a longitudinal axis extending therebetween, the distal end of the first handle being connected to the outer peripheral surface of the encompassing member;
- and
- a pawl having a fixed end attached to the distal end of the first handle, the pawl extending away from the first handle and extending into the opening which is defined by the inner peripheral surface and the distal end of the first handle, the pawl having a biased portion and a head located at a free end opposite the fixed end, the biased portion of the pawl disposed between first and second opposing portions of the inner peripheral surface,
- wherein the head is movable with respect to at least one of the first handle and encompassing member.
A surgical ratchet, comprising:
- an encompassing member having an inner peripheral surface, an outer peripheral surface opposed to the inner peripheral surface, and an opening;
- a first handle extending away from the outer peripheral surface of the encompassing member, the handle having a proximal end and a distal end opposite the proximal end with a longitudinal axis extending therebetween;
- and
- a pawl having a fixed end attached to the first handle at a location intermediate the proximal and distal ends of the first handle, the pawl extending into the opening which is defined by the inner peripheral surface and the first handle, the pawl having a biased portion and a head located at a free end opposite the fixed end, the biased portion of the pawl disposed between first and second opposing portions defined at the distal end of the first handle, the first and second opposing portions of the first handle being connected to the inner peripheral surface of the encompassing member, and the distal end of the first handle being connected to the outer peripheral surface of the encompassing member at an outer surface of the first handle,
- wherein the head is movable with respect to at least one of the first handle and encompassing member.
A surgical ratchet tool, comprising:
- an encompassing member having an inner peripheral surface and an outer peripheral surface opposed to the inner peripheral surface, the encompassing member defining an opening, and the encompassing member having an encompassing longitudinal axis running about an extent of the encompassing member;
- a pawl including a head section and a bias section, the pawl having a pawl longitudinal axis that intersects with the encompassing longitudinal axis such that at least a portion of the head section is located on an interior side of the encompassing longitudinal axis while at least a portion of the bias section is located on an exterior side of the encompassing longitudinal axis;
- and
- at least one handle extending from the outer peripheral surface of the encompassing member.
Dependencies are inferred from the claim text.