Removable Core Implant Delivery Catheter
First Claim
Patent Images
1. A microcatheter system comprising:
- a tubular sleeve including a proximal portion, a distal portion and a body lumen extending therethrough, the distal portion terminating at a distal opening;
a core member removably located within the body lumen, the core member having a proximal end, a distal end terminating in an atraumatic tip and a guidewire lumen extending therethrough, where a length of the core member is greater than a length of the tubular sleeve and a flexibility of the core member permits navigation to the cerebral vasculature; and
where the tubular sleeve comprises a length, outer diameter and flexibility to permit navigation to the cerebral vasculature only when the core member is located within the body lumen.
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Accused Products
Abstract
A microcatheter comprising a sleeve and removable core with an atraumatic tip that allows delivery and navigation of the catheter to a site in remote small diameter vasculature over a guidewire. The core is removed upon achieving desired vascular access, leaving the sleeve in place for delivery of various therapeutic implants or systems.
118 Citations
16 Claims
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1. A microcatheter system comprising:
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a tubular sleeve including a proximal portion, a distal portion and a body lumen extending therethrough, the distal portion terminating at a distal opening; a core member removably located within the body lumen, the core member having a proximal end, a distal end terminating in an atraumatic tip and a guidewire lumen extending therethrough, where a length of the core member is greater than a length of the tubular sleeve and a flexibility of the core member permits navigation to the cerebral vasculature; and where the tubular sleeve comprises a length, outer diameter and flexibility to permit navigation to the cerebral vasculature only when the core member is located within the body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of vascular treatment, the method comprising:
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advancing a guidewire to a remote region in a blood vessel of cerebral vasculature, navigating a microcatheter over the guidewire to the blood vessel, where the microcatheter comprises a tubular sleeve having a core member located within a lumen of the tubular sleeve, the core member having an atraumatic tip extending distally beyond a distal opening of the tubular sleeve, where without the core member the tubular sleeve lacks sufficient column strength to advance to the remote region in the blood vessel of cerebral vasculature; and
,withdrawing the core member from the tubular sleeve while maintaining the tubular sleeve at the remote region of the accessed blood vessel. - View Dependent Claims (15, 16)
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Specification