Surgical cutting instrument
A surgical cutting instrument including a first tubular member, a second tubular member, a sleeve member, a third tubular member, and an orientation member. A distal section of the first tubular member includes a cutting tip. The distal region of the second tubular member forms a cutting window. The first elongated member is co-axially disposed within the second tubular member such that the cutting tip is selectively exposed at the cutting window. The first and second tubular members are co-axially disposed within the sleeve member. The third tubular member is co-axially disposed around the intermediate section of the first tubular member, the intermediate region of the second tubular member and the sleeve member. The orientation member is rotatable to transmit a rotational force applied to the orientation member to selectively rotate the second and third tubular members relative to the sleeve to effectuate spatial rotation of the cutting window.
1. A surgical cutting implement, comprising:
a first tubular member having a proximal section, an intermediate section, and a distal section, wherein the distal section includes a cutting tip;
a second tubular member having a proximal region, an intermediate region, and a distal region, wherein the distal region forms a cutting window, wherein the first elongated member is co-axially disposed within the second tubular member such that the cutting tip is selectively exposed at the cutting window;
a sleeve member having a proximal end, a distal end, and an intermediate portion between the proximal end and the distal end, wherein the first and second tubular members are co-axially disposed within the sleeve member;
a hub assembly, wherein the second tubular member is selectively rotatable within the hub assembly, wherein a hub of the hub assembly is rigidly secured to the sleeve member; and
an orientation member, wherein the orientation member is rigidly secured to the second tubular member, wherein the orientation member is rotatable to transmit a rotational force applied to the orientation member to rotate the second tubular member relative to the hub assembly to effectuate spatial rotation of the cutting window, where-in the orientation member is disposed along the second tubular member separate from and distal to the hub assembly, the orientation member comprises a proximal end which is distal to a distal end of the hub assembly.
2. The surgical cutting implement of claim 1 , wherein the intermediate section of the first tubular member and the intermediate region of the second tubular member are flexible.
3. The surgical cutting implement of claim 2 , wherein the intermediate section of the first tubular member and the intermediate region of the second tubular member are spiral cut.
4. The surgical cutting implement of claim 1 , wherein the intermediate section, intermediate region, and the intermediate portion are longitudinally aligned to overlap one another.
5. The surgical cutting implement of claim 1 , wherein the sleeve member is rigid.
6. The surgical cutting implement of claim 5 , wherein the sleeve member is curved along the intermediate portion.
7. The surgical cutting implement of claim 1 , further comprising:
a third tubular member co-axially disposed around the intermediate section of the first tubular member, the intermediate region of the second tubular member and the sleeve member.
8. The surgical cutting implement of claim 7 , wherein the third tubular member includes a flexible intermediate portion and rigid proximal and distal sections extending from opposing ends of the flexible intermediate portion.