Multi fire full thickness resectioning device

• US 20020047036A1
• Filed: 03/30/2001
• Published: 04/25/2002
• Est. Priority Date: 06/19/1998
• Status: Active Grant

• Current Assignee: Scimed Life Systems, Inc.
• Original Assignee: Scimed Life Systems, Inc.
• Inventors: Adams, Ronald D., Sullivan, Roy H.
• Granted Patent: US 6,601,749 B2
• Time in Patent Office: Days
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 2017/00353 one mechanical instrument performing multiple functions, e.g. cutting and grasping
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07221 curved
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61B 2090/038 during shipment
• CPC Class Codes: A61B 2090/306 using optical fibres

Abstract

The FTRD described comprises a removable cartridge body that contains a new load of staples and a new blade for use in the FTRD. The cartridge body can be removed and replaced with a new one once the staples have been used. Rotation of a main shaft by the physician causes the staples to be fired and the blade to be moved along a pre determined path to cut the stapled tissue. Tactile and audible feedback is given to the physician when the stapling phase is complete and the cutting phase is to begin.

Claims

1. An FTRD comprising:

a fixed housing;

a removable cartridge body complementary to the fixed housing when in an attached configuration, the removable cartridge body containing staples;

staple drivers slidable within the removable cartridge body, the staple drivers having a staple end adjacent to the staples and a driven end; and

an actuator disposed in the fixed housing, the actuator moving the staple drivers to push the staples against an anvil portion of the FTRD when in the attached configuration.

2. The FTRD according to claim 1, further comprising second staple drivers movably disposed in the fixed housing, the second staple drivers having a cam end and a driving end connecting to the driven end of the staple drivers when in the attached configuration.

3. The FTRD according to claim 1, further comprising a blade movable within the removable cartridge, the blade being linked to the actuator when in the attached configuration.

4. The FTRD according to claim 3, wherein the blade further comprises a guide portion to control movement of the blade relative to the removable cartridge body.

5. The FTRD according to claim 4, wherein the guide portion is a shaped protrusion adapted to cooperate with a corresponding indentation in the removable cartridge body.

6. The FTRD according to claim 5, wherein the shaped protrusion is one of a ball joint, a barb and a dimple.

7. The FTRD according to claim 2, wherein the driven end of the staple drivers abuts the driving end of the second staple drivers when in the attached configuration.

8. The FTRD according to claim 7, wherein one of the driven end and the driving end is concave, and the other is correspondingly convex.

9. The FTRD according to claim 1, further comprising a drive cam movable relative to the cartridge body by the actuator, the drive cam having a sloped surface adapted to sequentially move successive staple drivers to push the staples against the anvil portion of the FTRD.

10. The FTRD according to claim 9, wherein the drive cam is movable along a track formed in the cartridge body.

11. The FTRD according to claim 1, wherein the actuator is a rotating actuator.

12. The FTRD according to claim 1, wherein the actuator is a hand-operated actuator operated from a proximate end of the FTRD.

13. The FTRD according to claim 9, wherein the drive cam has a frangible portion adapted to break when the drive cam contacts a breaking element of the FTRD.

14. The FTRD according to claim 13, wherein the breaking element contacts the drive cam after the staple drivers have been moved.

15. The FTRD according to claim 11, further comprising a cam surface adjacent the rotating actuator and a plunger extending from an axis of the rotating actuator, the plunger moving radially relative the axis between at least two engagement positions in response to angular movement of the plunger along the cam surface.

16. The FTRD according to claim 15 wherein, when in the attached configuration, in one engagement position the plunger displaces a drive cam adapted to sequentially move successive staple drivers to push the staples against the anvil portion of the FTRD, and in another engagement position the plunger is adapted to move a blade movable within the removable cartridge.

17. The FTRD according to claim 16, wherein continuous rotation of the rotating actuator successively moves the plunger through the one engagement position and through the another engagement position.

18. The FTRD according to claim 16, further comprising biasing means opposing displacement of the drive cam by the plunger.

19. The FTRD according to claim 17, further comprising a frangible portion of the drive cam adapted to break when the plunger moves from the one engagement position to the another engagement position.

20. The FTRD according to claim 16, wherein the plunger is in the one engagement position during substantially half of an actuating stroke of the rotating actuator, and in another engagement position during substantially another half of the actuating stroke.

21. The FTRD according to claim 1, wherein the removable cartridge body further comprises friction fittings to hold the removable cartridge body in the attached configuration with the fixed housing.

22. The FTRD according to claim 1, wherein the removable cartridge body further comprises a snap fit slot and a snap fit tab to hold the removable cartridge body in the attached configuration with the fixed housing.

24. The staples cartridge according to claim 23, further comprising a blade movable along a path defined by the cartridge body, the blade having a base cooperating with the actuator when the cartridge body is attached to the housing.

25. The staples cartridge according to claim 24, further comprising a retaining portion of the blade, the retaining portion fitting in a track of the cartridge body to retain the blade in the path defined by the cartridge body.

26. The staples cartridge according to claim 23, wherein the staple drivers are adapted to slide in guides formed in the cartridge body to push staples out of the staple containing cavities when cooperating with the actuator.

27. The staples cartridge according to claim 23, further comprising a drive cam moved by the actuator to displace the successive staple drivers.

23. A removable staples containing cartridge of an FTRD comprising:

a cartridge body complementary to and removably attachable to an housing of the FTRD, the cartridge body defining staple containing cavities containing staples; and

staple drivers slidably retained in the cartridge body, the staple drivers having a staple end to propel staples from the staple containing cavities when the staple drivers are displaced, and a driven end adapted to cooperate with an actuator disposed in the housing when the cartridge body is attached to the housing, wherein successive staple drivers are sequentially displaced by operation of the drive cam.