Back biting surgical instrument
OwnerPeter Dobleinventor
Life of this patent
Estimating the term…
Abstract
A surgical instrument (10) is provided for cutting tissue. The surgical instrument (10) includes a shaft (20) having proximal (84) and distal (40) ends, a cutter (12) coupled to the distal end (40), and a handle (16) coupled to the proximal end (84). The cutter (12) is formed to include a base (30) having two cutting edges (50) providing an opening (51), a slider (32), and a tip (34) coupled to both the base (30) and the slider (32). The cutter (12) is formed to move between a fully open position in which the cutting edges (50) of the tip (34) form an obtuse angle (124) relative to the shaft (20) and a fully closed position in which the tip (34) is received within the opening (51) of the base (30). The handle (16) is arranged to move the cutter (12) between the open and closed positions.
Claims50
A surgical instrument for cutting tissue comprising
- a shaft having proximal and distal ends,
- a cutter coupled to the distal end of the shaft and formed to include a base having an complimentary aperture providing two curved cutting edges, a slider positioned to lie adjacent the base, and a tip having curved cutting edges and being coupled to the base and the slider, and the cutter formed to move between a fully open position in which the curved cutting edges of the tip form an obtuse angle relative to the shaft and a fully closed position in which the tip is received within the aperture of the base, and
- a handle coupled to the proximal end of the shaft and arranged to move the slider forward toward the distal end of the shaft to cause the tip to rotate counter-clockwise toward the proximal end of the shaft from the open to the closed positions.
A surgical instrument for cutting tissue comprising
- a shaft having proximal and distal ends,
- a cutter coupled to the distal end of the shaft and formed to include a base having an aperture providing two cutting edges, a slider positioned to lie adjacent the base, and a tip having cutting edges and being coupled to the base and the slider, and the cutter formed to move between a fully open position in which the cutting edges of the tip form an obtuse angle relative to the shaft and a fully closed position in which the tip is received within the aperture of the base, and
- a handle coupled to the proximal end of the shaft and arranged to move the tip between the open and closed positions, and
- wherein the slider is formed to include an aperture through which cut tissue may pass.
A surgical instrument for cutting tissue and positioned to engage an index finger and a thumb and to be supported by a middle finger of a surgeon or user when cutting tissue, the surgical instrument comprising
- a shaft having proximal and distal ends,
- a rod movable relative to the shaft,
- a cutter coupled to the distal end of the shaft and formed to include a cutter blade having two curved cutting surfaces, a base having two oppositely curved edges forming an opening adapted to cooperate with the cutting surfaces of the cutter blade in order to cut tissue, and a slider coupled to the rod and the cutter blade and also having an opening through which the cut tissue may pass, and
- a handle coupled to the shaft and the rod and arranged to move the rod relative to the shaft in order to move the cutter blade to a position received within the opening of the base.
A surgical instrument to be operated by the thumb and index finger, the surgical instrument comprising
- a shaft having a distal end, a proximal end, and an axis extending between distal and proximal ends,
- a rod received within the shaft and formed to include a distal end and a proximal end,
- a cutter including a cutter head, a base having a top surface, a bottom surface, and side walls extending therebetween and being coupled to the distal end of the shaft, and a slider having a top surface, a bottom surface, and side walls extending therebetween and being coupled to the distal end of the rod so that the top surface of the slider normally engages the bottom surface of the base, and
- a drive assembly coupled to the proximal end of the rod and the shaft and the cutter and movable between open and closed positions wherein movement of the rod past the proximal end of the shaft causes movement of the drive assembly between the open and closed positions as it rotates the cutter counter-clockwise toward the distal end of the shaft about a generally transverse axis to the axis of the shaft.
A surgical instrument to be operated by the thumb and index finger, the surgical instrument comprising
- a shaft having a distal end, a proximal end, and an axis extending between distal and proximal ends,
- a rod received within the shaft and formed to include a distal end and a proximal end,
- a cutter including a cutter head, a base having a top surface, a bottom surface, and side walls extending therebetween and being coupled to the distal end of the shaft, and a slider having a top surface, a bottom surface, and side walls extending therebetween and being coupled to the distal end of the rod so that the top surface of the slider normally engages the bottom surface of the base, and
- a drive assembly coupled to the proximal end of the rod and the shaft and movable between open and closed positions wherein the direction of movement of the drive assembly between the open and closed positions is generally transverse to the axis of the shaft,
- wherein the base further includes two cutting edges forming an aperture and the cutter head is received within the aperture when the drive assembly is in the closed position, and
- wherein the slider is formed to include an opening such that the opening aligns with the aperture of the base when the drive assembly is in the closed position.
Dependencies are inferred from the claim text.