Anchored guidewire
An anchored guide wire is described including at least one expansion apparatus having an outer surface for contacting surrounding tissue, an elongated guide wire with at least one lumen for supplying fluid to the expansion apparatus, and a pump that supplies fluid to the lumen to inflate the expansion apparatus, wherein the outer surface of the expansion apparatus has a textured surface for preventing slippage on surrounding tissue. A method of securing a guide wire in a bodily cavity is also described including inserting an elongated guide wire with an expansion apparatus having a textured outer surface and a lumen for supplying fluid to the expansion apparatus, into the bodily cavity, supplying fluid to the lumen with a pump until the expansion apparatus is inflated, moving a medical device along the elongated guide wire, deflating the expansion apparatus, and withdrawing the guide wire from the bodily cavity.
1. A method of using a guide wire in a bodily cavity, comprising the steps of:
inserting into a bodily cavity an elongated guide wire having
a balloon at a distal end of the guide wire;
a fiber mesh disposed over the balloon and affixed thereto; and
a lumen in fluid communication with the balloon;
advancing the distal end of the guide wire through the bodily cavity until the balloon reaches an anchoring position;
supplying fluid though the lumen to the balloon until the balloon is inflated such that the balloon with the fiber mesh exerts pressure on the wall of the bodily cavity to retain the balloon in the anchoring position;
advancing a medical device over the elongated guide wire through the bodily cavity while the balloon is inflated until the medical device reaches a desired position;
deflating the balloon; and
withdrawing the guide wire through the medical device and out of the bodily cavity.
2. The method of claim 1 , wherein the guide wire comprises a coiled wire.
3. The method of claim 2 , wherein the guide wire comprises a coiled stainless steel wire coated with polyethylene.
4. The method of claim 1 , wherein the elongated guide wire has a check valve disposed in the lumen at a proximal end thereof to maintain the inflation of the balloon, and wherein the step of deflating the balloon comprises disabling the check valve to release fluid from the balloon.
5. The method of claim 4 , wherein the check valve comprises silicone.
6. The method of claim 4 , wherein the check valve has a proximal part with a periphery corresponding to the lumen, and a distal part comprising two lips that allow the supply of fluid toward the distal end of the guide wire and prevent the flow of fluid back toward the proximal end of the guide wire by opening only in one direction.
7. The method of claim 6 , wherein the step of supplying fluid through the lumen to the balloon comprises supplying the fluid through a connection port connected to the proximal end of the guide wire, wherein the method further comprises the step of disconnecting the proximal end of the guide wire from the inflation port prior to the step of advancing a medical device over the elongated guide wire, and wherein the step of disabling the check valve comprises reconnecting the proximal end of the elongated guide wire to the connection portion such that a tube of the connection port extends through the check valve.
8. The method of claim 1 , wherein the step of advancing a medical device over the elongated guide wire comprises sliding a catheter over the elongated guide wire.
9. The method of claim 1 , wherein the step of supplying fluid through the lumen includes supplying the fluid via a fluid source having at least one sensor for measuring at least one parameter and a processor for controlling the supply of fluid based on the at the least one measured parameter.
10. The method of claim 9 , wherein the fluid source comprises an electropneumatic pump.
11. The method of claim 1 , further comprising the step of visualizing tissue in the bodily cavity by advancing an imaging device through the lumen.
12. The method of claim 11 , wherein the step of supplying fluid through the lumen to the balloon comprises supplying the fluid through a connection port connected to the proximal end of the guide wire, wherein the connection port includes an adapter through which the imaging device is inserted into the lumen.
13. The method of claim 12 , wherein the adaptor comprises a silicone gasket.
14. The method of claim 11 , wherein the balloon is transparent, and wherein the step of visualizing tissue comprises extending a distal tip of the imaging device through an aperture positioned inside the balloon.
15. The method of claim 11 , wherein the step of visualizing tissue comprises viewing the tissue in front of the guide wire with the imaging device through a transparent membrane positioned at a distal end of the elongated guide wire.
16. The method of claim 11 , wherein the step of visualizing tissue comprises extending a distal tip of said imaging device through an opening at a distal end of said elongated guide wire to visualize tissue in front of the guide wire.
17. The method of claim 16 , further comprising the step of cleaning the imaging device via a cleaning device positioned in the opening at the distal end of said elongated guide wire.
18. The method of claim 1 , further comprising the step of using at least one imaging marker to position the balloon within the bodily cavity.
19. The method of claim 1 , wherein the balloon has a distal tip with an opening therein and said elongated guide wire has a second lumen connected to said opening, further comprising the step of passing bodily fluids through the second opening and out the second lumen of the guide wire.
20. The method of claim 1 , wherein:
the balloon comprises a plurality of segments;
the elongated guide wire comprises a plurality of lumens; and
the step of supplying fluid to the expansion apparatus comprises supplying fluid to the plurality of segments such that at least one of the segments is inflated separately from at least one other of the segments.