Locator and closure device and method of use
View Patent ↗The present invention is directed to a device which is capable of both locating a punctured blood vessel wall and sealing the puncture in the vessel and to the method of using the device as well. In one embodiment, the device includes an elongate deployment member having a sealing element releasably disposed within a distal end thereof, said deployment member being coupled to a first actuator configured to retract said deployment member relative to said sealing element, and an elongated indicator member having a proximal end and a distal end, said indicator member extending through a lumen in said deployment member such that the distal end of said indicator member extends distally of the distal end of the deployment member, and said indicator member being coupled to a second actuator configured to retract said indicator member relative to said deployment member.
1. A device for sealing a puncture in the wall of the body lumen comprising:
an elongate deployment member having a sealing element releasably disposed within a distal end thereof, said deployment member being coupled to a first actuator configured to retract said deployment member relative to said sealing element,
a pusher received by the deployment member, wherein the pusher supports the sealing element at a particular location within the deployment member, and
an elongated indicator member having a proximal end and a distal end, said indicator member is a guide wire extending through a lumen in said deployment member such that the distal end of said indicator member is configured to form a loop when extended out distally of the distal end of the deployment member, and said indicator member being coupled to a second actuator configured to extend and retract said indicator member relative to said deployment member, wherein said second actuator is configured to extend said indicator member independent of said first and wherein operation of said first actuator retracts both said indicator member and said deployment member relative to said sealing element and said pusher.
2. The device of claim 1 , wherein the first and second actuators are first and second gears, further wherein the first and second gears form first and second rack and pinion mechanisms respectively.
3. The device of claim 2 , wherein the diameter of the first gear is substantially smaller than the diameter of the second gear.
4. The device of claim 2 , wherein the rack and pinion mechanisms each have a mechanical advantage and the ratio of mechanical advantages for the first rack and pinion mechanism to the second rack and pinion mechanism is 2 to 1.
5. The device of claim 2 , wherein the rack and pinion mechanisms each have a mechanical advantage and the ratio of mechanical advantages for the first rack and pinion mechanism to the second rack and pinion mechanism is 3 to 1.
6. The device of claim 1 , wherein the first and second actuators are hydraulic devices.
7. The device of claim 1 , wherein said device comprises a bleed back conduit defined in the deployment member.
8. The device of claim 1 , wherein the first and second actuators are configured to withdraw the deployment member and indicator member respectively at different rates, wherein the rate of withdrawal for the indicator member is greater than the rate of withdrawal for the deployment member.
9. The device of claim 1 , further comprising an inlet port coupled toward the distal end of the deployment member, configured to take in blood when exposed to a vessel, and an outlet port communicatively coupled to the inlet port configured to allow the blood that entered the inlet port to exit.
10. The device of claim 1 , wherein the sealing element is expandable.
11. The device of claim 1 , wherein the sealing element is comprised of bioabsorbable material.
12. The device of claim 1 , wherein the device is configured to be engaged with an introducer sheath.