CHONDROTOME
A surgical cutting device for cutting and removing cartilage from a diseased area. The surgical cutting device includes an elongated shaft having a proximal portion and a distal portion connected between a proximal end and a distal end. A central longitudinal axis extends through the elongated shaft. The proximal portion has a first diameter and the distal portion has a second diameter. The first diameter being larger than the second diameter. The cutting device also includes a cutting tip at the distal end of the elongated shaft. The cutting tip extends along a second axis at an angle relative to the central longitudinal axis and includes a curved blade. The curved blade includes an inner wall extending to a base of the cutting tip.
1 . A surgical cutting device, comprising:
an elongated shaft having a proximal portion and a distal portion connected between a proximal end and a distal end;
a central longitudinal axis extending through the elongated shaft;
wherein the proximal portion has a first diameter and the distal portion has a second diameter, the first diameter being larger than the second diameter;
a cutting tip at the distal end of the elongated shaft, extending at an angle relative to the central longitudinal axis;
wherein the cutting tip comprises a curved blade.
2 . The device of claim 1 , wherein the distal narrowing portion is tapered, decreasing in diameter in a distal direction.
3 . The device of claim 1 , wherein a cross-section of the curved blade is crescent-shaped.
4 . The device of claim 1 , wherein the angle at which the cutting tip extends relative to the central longitudinal axis is greater than 90 degrees.
5 . The device of claim 1 , further comprising a flat portion on the cutting tip, wherein the flat portion is connected to the curved blade and extends in a proximal direction.
6 . The device of claim 5 , wherein the flat portion extends along a plane which is substantially parallel to the central longitudinal axis.
7 . A surgical cutting device, comprising:
an elongated shaft having a proximal portion and a distal portion connected between a proximal end and a distal end;
a central longitudinal first axis extending through the elongated shaft;
a cutting tip at the distal end of the elongated shaft, extending along a second axis, which is at an angle relative to the central longitudinal first axis; and
wherein the cutting tip comprises a curved blade which is open in a proximal direction.
8 . The device of claim 7 , wherein the curved blade comprises an inner wall extending to a base of the cutting tip.
9 . The device of claim 8 , wherein the base is semi-circular.
10 . The device of claim 8 , wherein the base extends along a plane which is substantially perpendicular to the second axis.
11 . The device of claim 8 , further comprising a flat portion connected to the base of the cutting tip by a flange.
12 . The device of claim 11 , wherein the flat portion is D-shaped.
13 . The device of claim 11 , wherein the flat portion extends in a proximal direction along a third axis which is substantially parallel to the central longitudinal first axis.
14 . A surgical cutting device, comprising:
an elongated shaft having a proximal portion and a distal portion connected between a proximal end and a distal end;
a central longitudinal first axis extending through the elongated shaft;
a cutting tip at the distal end of the elongated shaft, extending along a second axis, which is at an angle relative to the central longitudinal first axis;
wherein the cutting tip comprises a curved blade which is open in a proximal direction; and
a handle attached at the proximal end of the elongated shaft.
15 . The device of claim 14 , wherein the curved blade comprises an inner wall extending to a base of the cutting tip.
16 . The device of claim 15 , wherein the base is sloped toward the elongated shaft.
17 . The device of claim 14 , wherein the base extends to and at least partially around a flat portion of the cutting tip.
18 . The device of claim 17 , wherein the flat portion is circular or semi-circular.
19 . The device of claim 17 , wherein the flat portion extends in a proximal direction along a third axis which is substantially parallel to the central longitudinal first axis.