Handle for suturing apparatus
View Patent ↗Methods and apparatus are provided for closing incisions within biological tissue. In one embodiment, a device and method are provided for suturing biological tissue, such as, for example, an organ or blood vessel. The suturing apparatus is particularly well suited for suturing an incision made in an artery, such as the femoral artery, following a catheterization procedure. The device eliminates the need to apply pressure to a patient's thigh for an extended period of time, and eliminates many of the complications and costs associated with the creation of a thrombus patch. In addition, the device comprises an improved handle portion which enables the physician to quickly and easily apply suture. The handle portion is very reliable and easy to manipulate. The suturing may be used in combination with existing catheter sheath introducers.
1. A suturing apparatus, comprising:
an elongate body;
an arm mounted to move relative to said elongate body, said arm having a suture mounting portion which mounts an end portion of a suture;
a needle having a distal end, said needle mounted to move relative to said elongate body; and
a handle attached to said elongate body, said handle comprising an actuator having a camming surface and a follower having a cammed surface, said follower connected to move said needle, said camming surface and cammed surface interacting in response to movement of said actuator to drive said follower to move said needle;
wherein said actuator rotates about an axis orthogonal to a longitudinal axis of the handle.
2. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at least about 35° relative to said longitudinal axis.
3. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at least about 40° relative to said longitudinal axis.
4. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at about 41° relative to said longitudinal axis.
5. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at between 35-45° relative to said longitudinal axis.
6. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at between 39-43° relative to said longitudinal axis.
7. The apparatus of claim 1 , wherein at least a portion of said cammed surface is inclined at between 40-42° relative to said longitudinal axis.
8. The apparatus of claim 1 , wherein the camming surface is curved.
9. The apparatus of claim 1 , wherein said handle comprises a second actuator having a second camming surface and a second cammed surface which interact in response to movement of said second actuator to move said arm.
10. The apparatus of claim 1 , wherein said elongate body includes a port for receiving a guide wire.
11. The apparatus of claim 1 , comprising a second needle and a second arm.
12. The apparatus of claim 1 , wherein said elongate body is flexible.
13. The apparatus of claim 1 , including a finger loop on said actuator for manually retracting the actuator with a finger.
14. The apparatus of claim 1 , wherein said follower is spring biased and said actuator has a first finish position, said interaction of said cammed surface and camming surface being released in said first finish position such that said spring biasing drives said follower in a proximal direction, thereby automatically retracting the needle in a proximal direction, without retracting the actuator from the first finish position.
15. The apparatus of claim 14 , wherein said actuator has a second finish position in which said spring biasing further retracts the needle, said actuator and said follower are relatively configured such that said follower is driven in the proximal direction at a faster rate upon reaching said second finish position than upon reaching said first finish position.
16. The apparatus of claim 1 , comprising a follower retractor member for manually retracting the follower and the needles in the event that said spring biasing of said follower fails to retract the needles.
17. The apparatus of claim 16 , wherein said follower is spring biased and said actuator has a first finish position, said interaction of said cammed surface and camming surface being released in said first finish position such that said spring biasing drives said follower in a proximal direction, thereby automatically retracting the needle in a proximal direction, without retracting the actuator from the first finish position.
18. The apparatus of claim 17 , wherein said actuator has a second finish position in which said spring biasing further retracts the needle, said actuator and said follower are relatively configured such that said follower is driven in the proximal direction at a faster rate upon reaching said second finish position than upon reaching said first finish position.
19. A suturing apparatus, comprising:
an elongate body;
an arm mounted to move relative to said elongate body, said arm having a suture mounting portion which mounts an end portion of a suture;
a needle having a distal end, said needle mounted to move relative to said elongate body; and
a handle attached to said elongate body, said handle comprising an actuator having a camming surface and a follower having a cammed surface, said follower connected to move said needle, such that movement of the follower in a distal direction drives the needle in a distal direction and movement of the follower in a proximal direction drives the needle in a proximal direction, said follower being spring biased towards a proximal direction, said actuator having a range of movement, said camming surface and cammed surface interacting to drive said follower in a distal direction during said range of movement;
wherein said actuator has a first finish position, said interaction of said cammed surface and camming surface being released in said first finish position such that said spring biasing drives said follower in a proximal direction, thereby automatically retracting the needle in a proximal direction, without retracting the actuator from the first finish position.
20. The apparatus of claim 19 , wherein said actuator has a second finish position in which said spring biasing further retracts the needle, said actuator and said follower are relatively configured such that said follower is driven in the proximal direction at a faster rate upon reaching said second finish position than upon reaching said first finish position.
21. The apparatus of claim 19 , wherein said actuator has a finish position in which said needle is at a distal end of a range of movement of the needle, said spring biasing of said follower retracting the needle in the proximal direction in response to retraction of the actuator from the finish position.
22. The apparatus of claim 19 , comprising a follower retractor member for manually retracting the follower and the needles in the event that said spring biasing of said follower fails to retract the needles.
23. A suturing apparatus, comprising:
an elongate body;
an arm mounted to move relative to said elongate body, said arm having a suture mounting portion which mounts an end portion of a suture;
a needle having a distal end, said needle mounted to move relative to said elongate body;
a handle attached to said elongate body, said handle comprising an actuator having a camming surface and a follower having a cammed surface, said follower connected to move said needle, such that movement of the follower in a distal direction drives the needle in a distal direction and movement of the follower in a proximal direction drives the needle in a proximal direction, said follower being spring biased towards a proximal direction, said actuator having a range of movement, said camming surface and cammed surface interacting to drive said follower in a distal direction during said range of movement; and
a follower refractor member for manually retracting the follower and the needles in the event that said spring biasing of said follower fails to retract the needles.