Dual lumen sheath for arterial access
First Claim
1. An assembly for insertion of a percutaneous intravascular blood pump and a guidewire, the assembly comprising:
- a guidewire having proximal and distal ends;
a stylet having proximal and distal ends;
a tubular sheath body dimensioned for insertion into a blood vessel through a vessel aperture, and for receiving and delivering an intravascular blood pump, the sheath body including;
a wall having a proximal end portion, a distal end portion, a longitudinal axis, an outer surface, and an inner surface defining a first lumen substantially parallel to the longitudinal axis, wherein the first lumen is dimensioned to allow passage of at least a portion of the intravascular blood pump; and
a second lumen disposed within the wall between the inner surface and the outer surface and extending from the proximal end portion to the distal end portion; and
a hub coupled to the tubular sheath body and having a port in fluid communication with the second lumen, wherein the second lumen is sized to receive, individually, (1) the distal end of the guidewire and (2) the distal end of the stylet, andwherein when the stylet is positioned within the second lumen, the distal end of the stylet substantially occludes the second lumen and the stylet forms a liquid tight seal across the port.
1 Assignment
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Accused Products
Abstract
A sheath assembly for the insertion of a percutaneous pump includes a tubular sheath body dimensioned for insertion into a blood vessel through a vessel aperture. The tubular sheath body includes a wall having a proximal end portion, a distal end portion, a longitudinal axis, an outer surface, an inner surface defining a first lumen substantially parallel to the longitudinal axis, and a second lumen disposed within the wall between the inner surface and the outer surface and extending from the proximal end portion to the distal end portion. The first lumen is dimensioned to allow passage of a portion of the percutaneous pump, and the second lumen is dimensioned for passage of a guidewire. A stylet is removably positioned to substantially occlude the second lumen. The stylet has a proximal end releasably secured to the sheath assembly.
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Citations
24 Claims
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1. An assembly for insertion of a percutaneous intravascular blood pump and a guidewire, the assembly comprising:
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a guidewire having proximal and distal ends; a stylet having proximal and distal ends; a tubular sheath body dimensioned for insertion into a blood vessel through a vessel aperture, and for receiving and delivering an intravascular blood pump, the sheath body including; a wall having a proximal end portion, a distal end portion, a longitudinal axis, an outer surface, and an inner surface defining a first lumen substantially parallel to the longitudinal axis, wherein the first lumen is dimensioned to allow passage of at least a portion of the intravascular blood pump; and a second lumen disposed within the wall between the inner surface and the outer surface and extending from the proximal end portion to the distal end portion; and a hub coupled to the tubular sheath body and having a port in fluid communication with the second lumen, wherein the second lumen is sized to receive, individually, (1) the distal end of the guidewire and (2) the distal end of the stylet, and wherein when the stylet is positioned within the second lumen, the distal end of the stylet substantially occludes the second lumen and the stylet forms a liquid tight seal across the port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method, comprising:
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positioning, via a blood vessel aperture, an intravascular blood pump within vasculature of a patient; inserting a sheath assembly through the blood vessel aperture, over the positioned intravascular blood pump, and into the vasculature of the patient, the sheath assembly comprising; a wall having a proximal end portion, a distal end portion, a longitudinal axis, an outer surface, and an inner surface defining a first lumen substantially parallel to the longitudinal axis, wherein the positioned intravascular blood pump is within the first lumen after the sheath assembly is inserted; and a second lumen disposed within the wall between the inner surface and the outer surface and extending from the proximal end portion to the distal end portion, wherein a stylet is positioned within and substantially occludes the second lumen during insertion of the sheath assembly; removing the stylet from the second lumen; positioning a guidewire within the second lumen after the stylet is removed, while the sheath assembly is within the vasculature of the patient; and removing, over the guidewire, the intravascular blood pump and the sheath assembly through the blood vessel aperture, such that the guidewire remains within the vasculature.
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Specification