Locking vascular introducer assembly with adjustable hemostatic seal
First Claim
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1. A vascular introducer comprising:
- a) an elongated dilator having a tapered distal end portion;
b) an elongated hollow sheath having opposed proximal and distal end portions and an axial lumen extending therethrough to accommodate the dilator; and
c) a selectively adjustable annular seal operatively associated with the proximal end portion of the sheath and configured for movement between an open position in which passage of an instrument through the axial lumen of the sheath is unrestricted and a closed position in which insertion of an instrument through the axial lumen of the sheath is restricted.
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Abstract
A vascular introducer assembly is disclosed that includes a dilator, a sheath having an axial lumen for accommodating the dilator, a locking collar for securing the dilator and the sheath to one another and an adjustable hemostatic seal for preventing fluid egress from the axial lumen and restricting insertion of instruments through the axial lumen.
123 Citations
22 Claims
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1. A vascular introducer comprising:
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a) an elongated dilator having a tapered distal end portion;
b) an elongated hollow sheath having opposed proximal and distal end portions and an axial lumen extending therethrough to accommodate the dilator; and
c) a selectively adjustable annular seal operatively associated with the proximal end portion of the sheath and configured for movement between an open position in which passage of an instrument through the axial lumen of the sheath is unrestricted and a closed position in which insertion of an instrument through the axial lumen of the sheath is restricted. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vascular introducer having an adjustable hemostatic seal comprising:
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a) an elongate hollow sheath defining an axial lumen, the sheath having opposed proximal and distal end portions;
b) a hub operatively associated with the proximal end portion of the sheath, the hub including a hub body portion with an axial bore in fluid communication with the axial lumen of the sheath and a tapered proximal portion having a helical thread defined along an outer periphery thereof, and a recessed channel defined circumferentially along an inner periphery thereof;
c) an elastic annular seal disposed within the recessed channel of the hub; and
d) a cap having an axial bore extending therethrough with a helical thread for cooperating with the helical thread of the tapered proximal portion of the hub so that rotational movement of the cap relative to the hub causes the annular seal to move radially relative to the axial bore of the hub. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A vascular introducer comprising:
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a) an elongated dilator having a tapered distal end portion and an axial passage extending therethrough;
b) an elongated hollow sheath having opposed proximal and distal end portions and an axial lumen extending therethrough to accommodate the dilator;
c) a hub operatively associated with the proximal end portion of the sheath, the hub including a hub body portion with an axial passage for accommodating the dilator and being in fluid communication with the axial lumen of the sheath, and having a tapered proximal portion;
d) a dilator handle associated with a proximal end of the dilator including a proximal receiving port in communication with the axial passage of the dilator and a distal mounting stem; and
e) a locking collar having an axial bore with a proximal portion configured to receive the distal mounting stem of the dilator handle to facilitate rotation of the dilator handle and a distal portion configured to engage the tapered proximal portion of the hub. - View Dependent Claims (18, 19, 20, 21, 22)
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- 15. A vascular introducer as recited in claim 14, wherein the distal portion of the locking collar and the tapered proximal portion of the hub include cooperative interlocking structures defined respectively thereon.
Specification