Exchangeable guide system
AssigneeMedtronic, Inc.
InventorLouis A. Cannon
Life of this patent
Estimating the term…
Abstract
A system for exchanging a smaller guide catheter with a larger guide catheter without removal of the coronary guide wire during angioplasty. An extender guide catheter is connected to the end of the implanted guide catheter, such as with a connector member. A larger guide catheter is advanced over the extended and implanted guide catheters into the aorta and the latter guide catheters are removed.
Claims22
A method of exchanging a first guide catheter system with a second guide catheter system during coronary angioplasty of a patient, said first guide catheter system comprising a first guide catheter, said first guide catheter having a distal end and defining a lumen, said method comprises the steps of:
- providing a guide wire having a proximal end and a distal end,
- positioning the guide wire within the lumen of the first guide catheter;
- positioning the first guide catheter within the patient with the distal end of said guidewire being adjacent to the vessel of interest;
- advancing an extender guide catheter member over the proximal end of said guide wire;
- attaching said extender guide catheter member to said first guide catheter;
- inserting a second guide catheter having a distal end over said extender guide catheter member and first guide catheter;
- advancing said second guide catheter to a point at which the distal end of said second guide catheter is adjacent to the distal end of said first guide catheter while captivating said guide wire such that the distal end of the guide wire remains adjacent to the vessel of interest;
- removing said first guide catheter and extender guide catheter member.
A system for exchanging a first smaller guide catheter member with a second larger guide catheter member, said system comprising an extendable guide catheter member having substantially the same outside diameter as said first guide catheter member, and connector means for detachably connecting said extender guide catheter member to said first guide catheter member.
A method of exchanging a first guide catheter system with a second guide catheter system during coronary angioplasty of a patient, the first guide catheter system comprising a first guide catheter and a first introducer sheath, the first guide catheter having a proximal end, a distal end, and defining a lumen, and the first introducer sheath defining a lumen, the method comprising the steps of:
- providing a guide wire having a proximal end and a distal end;
- positioning the guide wire within the lumen of the first guide catheter;
- positioning the first guide catheter within the lumen of the first introducer sheath;
- positioning the first guide catheter system within the patient with the distal end of the guidewire being adjacent to the vessel of interest;
- providing an extender guide catheter member having a proximal end and a distal end;
- advancing the extender guide catheter member over the proximal end of the guide wire;
- attaching the distal end of the extender guide catheter member to the proximal end of the first guide catheter;
- removing the first introducer sheath;
- providing a second introducer sheath, the second introducer sheath defining a lumen;
- advancing the second introducer sheath over the proximal end of the extender guide catheter member;
- positioning the second introducer sheath within the patient;
- inserting a second guide catheter having a distal end over the extender guide catheter and first guide catheter and inserting the second guide catheter through the lumen of the second introducer sheath;
- advancing the second guide catheter to a point at which the distal end of the second guide catheter is adjacent to the distal end of the first guide catheter while captivating the guide wire such that the distal end of the guide wire remains adjacent to the vessel of interest;
- and
- removing the first guide catheter and extender guide catheter.
Dependencies are inferred from the claim text.