Tissue resection device

1. A medical device, the device comprising:

an outer tubular member having a proximal end and a distal end;

a middle tubular member having a proximal end and a distal end, the middle tubular member configured to be received within the outer tubular member and capable of being rotatable relative to the outer tubular member; and

an inner tubular member configured to be received within the middle tubular member and capable of reciprocating and also capable of being rotatable relative to the middle tubular member;

wherein the outer tubular member comprises a first opening, wherein the middle tubular member comprises a second opening, and wherein the first opening is aligned with the second opening, wherein the outer tubular member comprises a first window between the first opening and the proximal end, wherein the middle tubular member comprises a second window between the second opening and the proximal end,

wherein the inner tubular member is configured to reciprocate and rotate while the middle tubular member and the outer tubular member are configured to be stationary, and wherein the middle tubular member is configured to be rotatable relative to the outer tubular member while the inner tubular member is configured to be stationary.

2. A medical device as in claim 1 wherein the first window and the second window are aligned with each other.

3. A cutting device for cutting tissue, the device comprising:

an outer tubular member having a proximal end, a distal end, and a first opening disposed at the distal end;

a middle tubular member having a proximal end, a distal end, and a second opening disposed at the distal end, the middle tubular member configured to be received within the outer tubular member and capable of being rotatable relative to the outer tubular member; and

an inner tubular member configured to be received within the middle tubular member and capable of reciprocating and also capable of being rotatable relative to the middle tubular member;

wherein the outer tubular member comprises a first window between the first opening and the proximal end, wherein the middle tubular member comprises a second window between the second opening and the proximal end,

wherein the first opening of the outer tubular member and the second opening of the middle tubular member are configured to form a cutting tool when the middle tubular member rotates relative to the outer tubular member while

the inner tubular member is configured to be stationary at the same time.

4. A cutting device as in claim 3 wherein the outer tubular member is configured to remain stationary during operation.

5. A cutting device as in claim 3 wherein the first window and the second window are aligned with each other.

6. A cutting device for cutting tissue, the device comprising:

an outer tubular member having a proximal end, a distal end, and a first opening disposed at the distal end;

a middle tubular member having a proximal end, a distal end, and a second opening disposed at the distal end, the middle tubular member configured to be received within the outer tubular member and capable of being rotatable relative to the outer tubular member; and

an inner tubular member configured to be received within the middle tubular member and capable of reciprocating and also capable of being rotatable relative to the middle tubular member;

wherein the middle tubular member and the outer tubular member are configured to be stationary when the inner tubular member reciprocates and rotates relative to the middle tubular member while the first opening of the outer tubular member and the second opening of the middle tubular member are facing in opposite directions to form a closed configuration such that no liquid can flow through the first opening of the outer tubular member.

7. A cutting device as in claim 6 wherein the outer tubular member comprises a first window between the first opening and the proximal end, wherein the middle tubular member comprises a second window between the second opening and the proximal end.

8. A cutting device as in claim 7 wherein the first window and the second window are aligned with each other.

9. A cutting device as in claim 6 wherein the distal end of the middle tubular member is between the proximal end and distal end of the outer tubular member.

10. A cutting device for cutting tissue, the device comprising:

an outer tubular member having a proximal end and a distal end;

a middle tubular member having a proximal end and a distal end, the middle tubular member configured to be received within the outer tubular member and capable of being rotatable relative to the outer tubular member;

an inner tubular member configured to be received within the middle tubular member and capable of reciprocating and also capable of being rotatable relative to the middle tubular member;

a first opening with cutting surface disposed at the distal end of the outer tubular member; and

a second opening with cutting surface disposed at the distal end of the middle tubular member;

wherein the first opening and the second opening are configured to form one cutting tool while the inner tubular member is configured to be stationary, wherein the inner tubular member is configured to reciprocate and rotate while the middle tubular member and the outer tubular member are configured to be stationary, and wherein the first opening and the second opening are configured to form a closed configuration when the openings are facing in opposite directions such that no liquid can flow through the first opening.

11. A cutting device as in claim 10 wherein the outer tubular member comprises a first window between the first opening and the proximal end, wherein the middle tubular member comprises a second window between the second opening and the proximal end.

12. A cutting device as in claim 11 wherein the first window and the second window are aligned with each other.

13. A cutting device for cutting tissue, the device comprising:

an outer tubular member having a proximal end and a distal end;

a middle tubular member having a proximal end and a distal end, the middle tubular member configured to be received within the outer tubular member and capable of being rotatable relative to the outer tubular member;

an inner tubular member configured to be received within the middle tubular member and capable of reciprocating and also capable of being rotatable relative to the middle tubular member;

a first opening with a cutting surface disposed at the distal end of the outer tubular member; and

a first window disposed between the distal end and the proximal end of the outer tubular member;

a second opening with a cutting surface disposed at the distal end of the middle tubular member,

a second window disposed between the distal end and the proximal end of the middle outer tubular member;

wherein the first opening and the second opening are configured to form a cutting tool when the middle tubular member rotates relative to the outer tubular member, and wherein the inner tubular member is configured to form another cutting tool while it reciprocates and rotates relative to the middle tubular member when it is exposed by a superimposition of the first window and the second window.

14. A cutting device as in claim 13 wherein the outer tubular member is configured to remain stationary during operation.

15. A cutting device as in claim 13 wherein the middle tubular member is configured to oscillate, or rotate in only one direction, within the outer tubular member.

16. A cutting device as in claim 13 wherein the distal end of the middle tubular member is between the proximal end and distal end of the outer tubular member.