Hemostatic valve system

A hemostatic valve assembly comprising:

• a housing comprising a proximal end, a distal end and a side wall defining a housing chamber between the proximal and distal ends, wherein at least a portion of the housing side wall tapers radially inwardly in a proximal to distal direction to form a continuously curved inner surface;
• a tubular sheath extending proximally from the housing and comprising a proximal end and a distal end and a sheath lumen extending there between;
• a valve member disposed at least partially within the housing chamber, the valve member comprising an open proximal end, a distal end having an orifice formed therein, a side wall extending between the proximal and distal ends of the valve member to form a valve cavity, and a continuously curved outer surface, the valve member being deformable between a closed configuration in which the orifice is substantially closed and an open configuration in which the orifice is open;
• and
• a biasing member disposed proximal to the valve member and moveable between a longitudinally compressed condition and a longitudinally expanded condition,
• wherein, when in the longitudinally expanded condition, the biasing member is configured to push the valve member longitudinally and against the continuously curved inner surface of the side wall of the housing,
• wherein the continuously curved inner surface of the side wall of the housing is configured to urge at least the distal end of the valve member radially inwardly, thus urging the orifice to a substantially closed configuration,
• wherein the housing comprises an open aperture at its distal end such that an interventional device may be introduced proximally through the open aperture, advanced through the orifice, advanced through the housing chamber, and into the sheath,
• wherein the orifice formed in the distal end of the valve member is at least partially aligned with the open aperture, and
• wherein the open aperture formed in the distal end of the housing is beveled.

A hemostatic valve assembly comprising:

• A housing comprising a proximal end, a distal end, a housing side wall and a housing chamber between the proximal and distal ends, wherein at least a portion of the housing side wall tapers radially inwardly in a proximal to distal direction to form a continuously curved bowl shaped inner surface of the sidewall of the housing chamber;
• a tubular sheath extending proximally from the housing and comprising a proximal end and a distal end and a sheath lumen extending there between;
• a valve member having a continuously curved outer surface disposed at least partially within the housing chamber, the valve member comprising an open proximal end, a distal end having an orifice formed therein and an inner side wall extending between the proximal and distal ends of the valve member to form a valve cavity, the valve member being deformable between a closed configuration in which the orifice is substantially closed and an open configuration in which the orifice is open;
• and
• a biasing member disposed proximal to the valve member and moveable between a longitudinally compressed condition and a longitudinally expanded condition, wherein, when in the longitudinally expanded condition, the biasing member is configured to push the valve member longitudinally and against the continuously curved bowl shaped inner surface of the side wall of the housing, and wherein the continuously curved bowl shaped inner surface of the side wall of the housing is configured to urge at least the distal end of the valve member radially inwardly, thus urging the orifice to a substantially closed configuration,
• wherein the housing comprises an open aperture at its distal end such that an interventional device may be introduced proximally through the open aperture, advanced through the orifice, advanced through the housing chamber, and into the sheath, and
• wherein the orifice of the valve member is biased in the closed configuration and wherein when the orifice of the valve member is biased in the closed configuration, the open aperture is open.

A hemostatic valve assembly comprising:

• a housing comprising a proximal end, a distal end and a side wall defining a housing chamber between the proximal and distal ends, wherein at least a portion of the housing side wall tapers radially inwardly in a proximal to distal direction to form a dome shaped inner surface;
• a tubular sheath extending proximally from the housing and comprising a proximal end and a distal end and a sheath lumen extending therebetween;
• a valve member disposed at least partially within the housing chamber, the valve member comprising an open proximal end, a distal end having an orifice formed therein, a valve cavity, and a dome shaped outer surface, the valve member being deformable between a closed configuration in which the orifice is substantially closed and an open configuration in which the orifice is open;
• and
• a biasing member disposed proximal to the valve member and moveable between a longitudinally compressed condition and a longitudinally expanded condition, wherein, when in the longitudinally expanded condition, the biasing member is configured to push the valve member longitudinally and against the tapered side wall of the housing, and wherein the dome shaped inner surface of the side wall of the housing is configured to urge at least the distal end of the valve member radially inwardly, thus urging the orifice to a substantially closed configuration,
• wherein the housing comprises an open aperture at its distal end such that an interventional device may be introduced proximally through the open aperture, advanced through the orifice, advanced through the housing chamber, and into the sheath, and
• wherein the orifice of the valve member is biased in the closed configuration and wherein when the orifice of the valve member is biased in the closed configuration, the open aperture is open.