Intra-aortic balloon catheter having a releasable guide wire
First Claim
1. A single lumen intra-aortic balloon catheter system comprising a catheter and a guide wire for insertion as a unit through an insertion site and tissue track of a patient into a blood vessel of the patient, said catheter comprising a catheter tube having distal and proximal ends, a balloon membrane having distal and proximal ends, and a tip having a lumen, the proximal end of the balloon membrane being connected to the distal end of the catheter tube and the distal end of the balloon membrane being connected to the tip, said guide wire comprising a guide section and a more proximal pull section, said pull section having a smaller cross sectional area than the guide section.
1 Assignment
0 Petitions
Accused Products
Abstract
A single lumen monorail intra-aortic balloon catheter and guide wire system. The catheter and guide wire being advanced through a patient'"'"'s vasculature as a unit. The guide wire comprising a tip guide section and a pull section configured so as to minimize bleeding at the insertion site.
35 Citations
32 Claims
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1. A single lumen intra-aortic balloon catheter system comprising a catheter and a guide wire for insertion as a unit through an insertion site and tissue track of a patient into a blood vessel of the patient,
said catheter comprising a catheter tube having distal and proximal ends, a balloon membrane having distal and proximal ends, and a tip having a lumen, the proximal end of the balloon membrane being connected to the distal end of the catheter tube and the distal end of the balloon membrane being connected to the tip, said guide wire comprising a guide section and a more proximal pull section, said pull section having a smaller cross sectional area than the guide section.
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3. A single lumen intra-aortic balloon catheter system comprising a catheter and a guide wire for insertion as a unit through a tissue track into a blood vessel of a patient,
said catheter comprising a catheter tube having distal and proximal ends, a balloon membrane having distal and proximal ends, and a tip having a lumen, the proximal end of the balloon membrane being connected to the distal end of the catheter tube and the distal end of the balloon membrane being connected to the tip, said guide wire comprising a guide section and a more proximal pull section, when the catheter and pull section are placed side-by-side inside the tissue tract an outer surface of the catheter and pull section and the tissue tract define a first leakage area through which blood can flow, when the catheter and guide section are placed side-by-side inside the tissue tract an outer surface of the catheter and guide section and the tissue tract define a second leakage area through which blood can flow, the dimensions and cross sectional shape of the guide and pull sections being such that the first leakage area is smaller than the second leakage area.
- 6. A method for inserting a single lumen intra-aortic balloon catheter comprising a catheter tube having distal and proximal ends, a balloon membrane having distal and proximal ends, and a tip having a lumen, the proximal end of the balloon membrane being connected to the distal end of the catheter tube and the distal end of the balloon membrane being connected to the tip, a distal guide portion of a guide wire being disposed within the tip lumen and extending beyond a distal end of the tip, said method comprising the step of passing the catheter along with the guide wire as a unit through a tissue tract and into a blood vessel of a patient as a unit and advancing said unit to a position in the vasculature of the patient appropriate for pumping.
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12. A method for inserting a single lumen intra-aortic balloon catheter comprising a catheter tube having distal and proximal ends, a balloon membrane having distal and proximal ends, and a tip having a lumen, the proximal end of the balloon membrane being connected to the distal end of the catheter tube and the distal end of the balloon membrane being connected to the tip, a distal guide portion of a guide wire being disposed within the tip lumen and extending beyond a distal end of the tip, said method comprising the steps of:
- (a) passing a preinsertion guide wire into a patient'"'"'s blood vessel;
(b) passing an insertion sheath over said guide wire at least partially into the blood vessel;
(c) removing the preinsertion guide wire;
(d) inserting the distal portion of the guide wire into the blood vessel through the insertion sheath;
(e) removing the insertion sheath from the blood vessel while leaving the distal portion of the guide wire within the blood vessel;
(f) passing the catheter along with the guide wire as a unit into the blood vessel and advancing said unit to a position appropriate for pumping; and
(e) pulling the guide wire out of the blood vessel while holding the catheter in place. - View Dependent Claims (13, 14, 15, 16, 17)
- (a) passing a preinsertion guide wire into a patient'"'"'s blood vessel;
- 18. A guide wire having a proximal section and a distal section, said distal section terminating in a tip, said proximal section having a smaller cross sectional area than the distal section.
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23. A guide wire having a proximal section and a distal section, said distal section terminating in a tip, said proximal section having a higher stiffness than the distal section.
- 24. A guide wire having a proximal section, a first distal section, and a second distal section distal the first distal section and terminating in a tip, said first distal section having a larger cross sectional area than both the proximal section and the second distal section.
- 29. A guide wire comprising a proximal section, a first distal section, a second distal section, and distal third distal section terminating in a tip, the first distal section being distal to the proximal section, the second distal section being distal to the first distal section, the third distal section being distal to the second distal section, said third distal section having a larger cross sectional area than the second distal section, said first distal section having a larger cross sectional area than the proximal section and the second distal section.
Specification