Articulable and reciprocable surgical knife
AssigneePopcab, LLC
InventorJavier E. Castaneda
Life of this patent
Estimating the term…
Abstract
A surgical knife device includes a tubular shaft, a blade guide at the distal end of the shaft, an actuation wire extending through the shaft, a blade coupled to the distal end of the wire, and a handle which moves the wire relative to the shaft to effect extension and retraction of the blade from the guide. The blade height is substantially the same as the outer diameter of the distal end of the shaft and the blade guide to provide a large cutting surface. Movement of the blade is effected with a knob rotatably coupled to the handle and which provides fine longitudinal movement of the blade. The device is also preferably steerable such that it may be controllably articulated about a flexible distal portion of the shaft.
Claims26
A surgical knife device, comprising:
- a) an elongate tubular shaft having proximal and distal ends;
- b) a handle coupled to said proximal end of said shaft and having a longitudinal bore therein;
- c) a blade in a first orientation;
- d) a blade depth control member having proximal and distal ends, said proximal end extending into said longitudinal bore of said handle and said distal end extending to or adjacent said distal end of the shaft and coupled to said blade;
- and
- e) an actuation member rotatably coupled to said handle and coupled to said proximal end of said blade depth control member, wherein rotation of said actuation member relative to said handle moves said blade longitudinally relative to said distal end of said shaft.
A surgical knife device, comprising:
- a) an elongate tubular shaft having proximal and distal ends and an outer diameter;
- b) a blade having a height substantially equal to said outer diameter of said shaft;
- c) a handle coupled to said proximal end of said shaft and having a longitudinal bore therein;
- d) an actuation member having proximal and distal ends, said proximal end extending into said longitudinal bore of said handle and said distal end extending to or adjacent said distal end of said shaft and coupled to said blade;
- and
- e) means for moving said blade longitudinally relative to said distal end of said shaft.
A surgical knife device, comprising:
- a) an elongate tubular shaft having proximal and distal ends;
- b) a blade guide coupled to said distal end of said shaft and having outer walls defining a maximum outer diameter;
- c) a blade having a cutting edge and a height substantially equal to said maximum outer diameter of said blade guide;
- d) a handle coupled to said proximal end of said shaft and having a longitudinal bore therein;
- e) a blade depth control member having proximal and distal ends, said proximal end extending through said longitudinal bore of said handle and said distal end extending to or adjacent said distal end of the shaft and coupled to said blade;
- and
- f) means for moving said blade between retracted and extended position relative to said blade guide, wherein when in said retracted position said cutting edge of said blade is withdrawn between said walls of said blade guide.
A surgical knife device, comprising:
- a) an elongate tubular shaft having a proximal portion and relatively distal flexible portion and a distal end portion distal of said flexible portion;
- b) a handle coupled to said proximal end of said shaft and having a longitudinal bore therethrough;
- c) a blade;
- d) a blade depth control member having proximal and distal ends, said proximal end extending through said longitudinal bore of said handle and said distal end extending to or adjacent said distal end of said shaft and coupled to said blade;
- e) a means for moving said blade depth control member longitudinally relative to said shaft;
- f) a pair of steering elements having proximal and distal ends, said distal ends of said steering elements coupled to said distal portion of said shaft on opposite side thereof;
- and
- g) a steering member movably coupled to said handle and coupled to said proximal ends of said steering elements, wherein movement of said steering member relative to said handle moves one of said steering elements relative to the other of said steering elements such that said shaft is caused to bend about said flexible portion in a direction.
A surgical knife device for use in through port surgical procedure, comprising:
- a) an elongate tubular shaft having proximal and distal ends, said distal end having an outer diameter sized to be received in the port;
- b) a blade having upper, lower and distal cutting edges permitting cutting in three approaches;
- and
- c) a handle means for moving said blade proximally and distally relative to said shaft between retracted and extended positions.
A surgical cutting device, comprising:
- a) a blade having upper, lower and distal cutting edges which permit cutting in three approaches;
- b) a blade housing;
- and
- c) a handle means for moving said blade proximally and distally relative to said blade housing between retracted and extended positions.
a surgical blade, comprising:
- a) a proximal tang portion;
- and
- b) a distal blade portion including upper, lower and distal cutting edges which permit cutting in three approaches relative to said blade portion.
Dependencies are inferred from the claim text.