Modular introducer and exchange sheath

An introducer sheath, comprising:

• a hub having a proximal end and a distal end and a lumen extending therebetween, the hub having a cutout in the proximal end thereof;
• a flexible valve member disposed in the distal end of the hub, the flexible valve member having an opening and a locating channel, the flexible valve member being secured within the hub;
• an elongated tubular member having a proximal end and a distal end, the elongated tubular member being an outermost surface of the introducer sheath;
• a retaining member having a proximal end and a distal end and being configured to be received within the lumen of the hub, the proximal end of the retaining member being configured to receive a portion of the flexible valve member and an inner surface of the distal end of the retaining member being configured to contact the flared portion of the tubular member such that the proximal end of the tubular member is retained within the lumen of the hub upon the retaining member being received in the hub, the retaining member being configured to be frictionally restrained within the lumen of the hub, the elongated tubular member abutting a proximally facing surface of the distal end of the hub and the distal end of the retaining member;
• and
• a cap having a protrusion configured to fit within the cutout of the hub in a manner that secures the cap to the hub, a portion of the cap being configured to fit into the locating channel in the flexible valve member in a manner that locates the cap relative to the flexible valve member, and the flexible valve member and the cap cooperating to further secure the retaining member in the hub.

An introducer sheath, comprising:

• a hub having a proximal end and a distal end with a lumen extending therebetween, the lumen of the hub having a groove with a proximally oriented opening formed therein, the hub having a cutout in the proximal end thereof;
• an elongated tubular member having a proximal end and a distal end, the proximal end of the tubular portion having flared portion, a distal portion extending from the distal end toward the proximal end and including a midpoint of the elongated tubular member, the elongated tubular member being an outermost surface of the introducer sheath:
• and
• a retaining member having a proximal end, a distal end, an outer surface extending from the proximal end toward the distal end and being parallel to an inner surface defining a lumen extending from the proximal end toward the distal end, the distal end of the retaining member being configured to be received in the groove formed in the lumen of the hub, the distal end of the retaining member being configured to contact the flared portion of the tubular member when the distal end of the retaining member is disposed in the groove and receiving a portion of the flared portion about the outer surface and within the lumen of the retaining member in a sealing engagement, the retaining member having a recessed portion proximal to the distal end thereof, the retaining member being configured to be frictionally restrained within the lumen of the hub;
• a flexible membrane having an opening, a first locating channel and a second locating channel, the recessed portion of the retaining member being configured to enter the first locating channel and to locate the flexible membrane relative to the retaining member;
• and
• a cap having a protrusion configured to fit within the cutout of the hub in a manner that secures the cap to the hub, a portion of the cap being configured to fit into the second locating channel in the flexible membrane in a manner that locates the cap relative to the flexible membrane, and the flexible membrane and the cap cooperating to further secure the retaining member in the hub.

An introducer sheath, comprising:

• a hub having a proximal end and a distal end and a lumen extending therebetween, the hub having a cutout in the proximal end thereof, the hub having a locking feature located in the lumen thereof;
• an elongated tubular member having a proximal end and a distal end, the elongated tubular member being an outermost surface of the introducer sheath;
• a retaining member having an outer surface parallel to an inner surface defining a lumen, the retaining member configured to be received within the lumen of the hub, the retaining member being configured to secure the elongated tubular member to the hub, the retaining member having one or more locking features configured to engage the locking feature of the hub, thereby securing the retaining member within the lumen of the hub, the elongated tubular member abutting a proximally facing surface of the distal end of the hub and the distal end of the retaining member;
• and
• a flexible membrane having an opening and a locating channel, the flexible membrane being secured within the hub;
• and
• a cap having a protrusion configured to fit within the cutout of the hub in a manner that secures the cap to the hub, a portion of the cap being configured to fit into the locating channel in the flexible membrane in a manner that locates the cap relative to the flexible membrane, and the flexible membrane and the cap cooperating to further secure the retaining member in the hub.

An introducer sheath comprising individual components that are configured so as to be assembled using only resilient connections, the introducer sheath comprises:

• a hub having a proximal end and a distal end and a lumen extending therebetween;
• an elongated tubular member having a proximal end and a distal end, the proximal end of the tubular member having a flared portion, the tubular member being substantially straight from the distal end toward the proximal end and including a midpoint of the elongated tubular member, the elongated tubular member being an outermost surface of the introducer sheath;
• a retaining member having an outer surface parallel to an inner surface defining a lumen, the retaining member being configured to be received within the lumen of the hub and to retain the proximal end of the tubular member within the lumen of the hub and being configured to receive a portion of the proximal end of the elongated tubular member about the outer surface of the retaining member and within the lumen of the retaining member such that the proximal end of the tubular member is retained within the lumen of the hub upon the retaining member being received in the hub, the retaining member having a recessed portion proximal to the distal end thereof, the retaining member being configured to be frictionally restrained within the lumen of the hub, the elongated tubular member abutting a proximally facing surface of the distal end of the hub and the distal end of the retaining member;
• a flexible valve disposed in the lumen of the hub at the proximal end of the hub the flexible valve having a locating channel configured to accept the recessed portion of the retaining member;
• and
• a cap removably secured to the hub at the proximal end of the hub, a portion of the cap being configured to fit into the locating channel in the flexible valve member in a manner that locates the cap relative to the flexible valve membrane, and the flexible valve member and the cap cooperating to further secure the retaining member in the hub.