Exchange catheter and method of use
First Claim
Patent Images
1. A catheter exchange method, comprising:
- introducing a guidewire having a proximal end and a distal end into the vasculature of a patient until the distal end of the guidewire is near to an occlusion in the vasculature;
providing an exchange catheter comprising an elongate catheter shaft having a proximal end, a distal end, and at least one lumen adapted to allow an occlusive device to pass therethrough, wherein the exchange catheter includes at least one slit in the distal end;
delivering the exchange catheter over the guidewire until the distal end of the exchange catheter is near to the occlusion;
removing the guidewire from the patient;
inserting an occlusion catheter having a proximal end, a distal end and an occlusive device on the distal end thereof into the lumen of the exchange catheter and advancing the occlusion catheter until the occlusive device passes through the distal end of the exchange catheter and is positioned near to the occlusion, wherein passing the occlusion catheter through the distal end of the exchange catheter causes the distal end of the exchange catheter to expand; and
removing the exchange catheter from the patient.
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Accused Products
Abstract
Exchange catheters which allow for the removal of a standard guidewire and replacement with a guidewire or catheter bearing an occlusive device during percutaneous transluminal angioplasty or related procedures. The elongate catheters have at least one lumen, and are preferably provided with a slit approximately 3-20 mm in length at the distal end of the lumen to allow the catheter to expand to accommodate the passage of the occlusive device while still maintaining a low profile. The catheters can also be used to provide aspiration and/or delivery of fluid.
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Citations
22 Claims
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1. A catheter exchange method, comprising:
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introducing a guidewire having a proximal end and a distal end into the vasculature of a patient until the distal end of the guidewire is near to an occlusion in the vasculature; providing an exchange catheter comprising an elongate catheter shaft having a proximal end, a distal end, and at least one lumen adapted to allow an occlusive device to pass therethrough, wherein the exchange catheter includes at least one slit in the distal end; delivering the exchange catheter over the guidewire until the distal end of the exchange catheter is near to the occlusion; removing the guidewire from the patient; inserting an occlusion catheter having a proximal end, a distal end and an occlusive device on the distal end thereof into the lumen of the exchange catheter and advancing the occlusion catheter until the occlusive device passes through the distal end of the exchange catheter and is positioned near to the occlusion, wherein passing the occlusion catheter through the distal end of the exchange catheter causes the distal end of the exchange catheter to expand; and removing the exchange catheter from the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An exchange method, comprising:
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delivering a first guidewire into the vasculature of a patient; delivering an exchange catheter, the exchange catheter comprising an elongate catheter shaft having a proximal end, a distal end adapted to allow an occlusive device to pass therethrough, and at least one lien extending between the proximal and distal ends, over the first guidewire into the vasculature of the patient; removing the first guidewire from the patient following delivery of the exchange catheter; and inserting a second guidewire having a proximal end, a distal end, and an occlusive device on the distal end into the at least one lumen of the exchange catheter and advancing the occlusive device through the distal end of the exchange catheter into the vasculature of the patient. - View Dependent Claims (9, 10, 11, 12)
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13. An exchange catheter method, comprising:
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delivering a first guidewire having a proximal end and a distal end into the vasculature of the patient until the distal end of the guidewire is near to an occlusion; delivering an exchange catheter comprising an elongate catheter shaft having a proximal end, a distal end and at least one lumen extending therethrough, over the guidewire until the distal end of the exchange catheter is near to the occlusion; delivering a second guidewire having a proximal end, a distal end and an occlusive device on the distal end of the second guidewire through a lumen of the exchange catheter without riding over the first guidewire until the occlusive device is positioned near to the occlusion; and removing the first guidewire following delivery of the exchange catheter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. An exchange method for performing therapy in the vasculature of a patient, comprising:
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delivering a first guidewire having a proximal end and a distal end into the vasculature of the patient until the distal end of the guidewire is near to an occlusion; delivering an exchange catheter comprising an elongate catheter shaft having a proximal end, a distal end and at least one lumen extending therethrough, over the guidewire until the distal end of the exchange catheter is near to the occlusion; delivering a second guidewire having a proximal end, a distal end and an occlusive device on the distal end of the second guidewire through a lumen of the exchange catheter until the occlusive device is positioned near to the occlusion; removing the first guidewire from the patient following delivery of the exchange catheter and prior to performing therapy; and
removing the exchange catheter from the patient following delivery of the second guidewire.
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Specification