Expandable sheath tubing
First Claim
Patent Images
1. A catheter sheath for retrieving an object in a body, comprising:
- an expandable distal end, the expandable distal end being a tube including a first layer and a second layer, wherein the first layer is bonded to the second layer, the second layer is positioned outside of the first layer, the first layer comprises a slit that extends from the distal edge of the first layer, a portion of the slit is not parallel to the longitudinal axis of the tube, and the outer surface of the first layer does not contact the inner surface of the first layer, wherein the second layer extends beyond the distal edge of the first layer to create an overhang;
a proximal end including a port for the passage of objects into the catheter sheath; and
a tubular percutaneous delivery component located between the proximal and distal ends that creates an uninterrupted conduit between the expandable distal end and the proximal end.
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Accused Products
Abstract
An expandable catheter accommodates a medical device that is being removed from a body with a larger diameter than the catheter. The same catheter may be used to reposition a device within the body to an alternative delivery site. A catheter or sheath may be used to deliver a medical device, surgical instrument, or biological sample.
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Citations
26 Claims
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1. A catheter sheath for retrieving an object in a body, comprising:
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an expandable distal end, the expandable distal end being a tube including a first layer and a second layer, wherein the first layer is bonded to the second layer, the second layer is positioned outside of the first layer, the first layer comprises a slit that extends from the distal edge of the first layer, a portion of the slit is not parallel to the longitudinal axis of the tube, and the outer surface of the first layer does not contact the inner surface of the first layer, wherein the second layer extends beyond the distal edge of the first layer to create an overhang; a proximal end including a port for the passage of objects into the catheter sheath; and a tubular percutaneous delivery component located between the proximal and distal ends that creates an uninterrupted conduit between the expandable distal end and the proximal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 18, 20)
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11. A catheter sheath for delivery and retrieval of objects during medical procedures, comprising:
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a percutaneous shaft component; and an expandable distal end of at least one layer attached to the end of the percutaneous shaft component, including and elastomeric outer cover and a braided layer constructed of braided material that expands axially when a portion of the expandable distal end is contracted longitudinally, wherein the elastomeric outer cover is positioned over the portion of the braided material that receives the object to be retrieved and extends beyond a distal edge of the braided layer to create an overhang. - View Dependent Claims (12, 13)
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14. A method of recovery of an object in a biological vas, comprising:
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introducing of a percutaneous catheter sheath, the catheter sheath including a proximal end, an expandable distal end, and a tubular percutaneous component, the proximal end including a port for the passage of objects in the catheter sheath, the tubular percutaneous component located between the proximal and distal ends that creates an uninterrupted conduit between the expandable distal end and the proximal end, and the expandable distal end being a tube including a first layer and a second layer wherein the first layer is bonded to the second layer, the second layer is positioned outside of the first layer, the first layer comprises a slit that extends from the distal edge of the first layer, a portion of the slit is not parallel to the longitudinal axis of the tube, and the outer surface of the first layer does not contact the inner surface of the first layer, wherein the second layer extends beyond the distal edge of the first layer to create an overhang; and recovering the object in the biological vas at least partially into the expandable distal end while causing the expandable distal end to partially expand. - View Dependent Claims (15, 16, 17, 19)
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21. A catheter sheath for retrieving an object in a body, comprising:
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an expandable distal end, the expandable distal end being a tube including a first layer and a second layer, wherein the first layer is bonded to the second layer, the second layer is positioned outside of the first layer, and the first layer comprises at least two slits that extend from the distal edge of the first layer, wherein the second layer extends beyond the distal edge of the first layer to create an overhang; a proximal end including a port for the passage of objects into the catheter sheath; and a tubular percutaneous delivery component located between the proximal and distal ends that creates an uninterrupted conduit between the expandable distal end and the proximal end. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification