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US 11,376,408 B2Granted
Pressure-sensing bleed-back control valve with improved sealing
OwnerFiras Al-Aliinventor
Life of this patent
Estimating the term…
Abstract
A novel seal is provided along with a valve for implementing the seal in the form of a hemostatic catheterization valve. A pressure-sensing form of the hemostatic valve is also provided. The novel seal includes a pair of cooperating conical gaskets divided through their apexes into a plurality of edge-abutting semi-conical flaps. The seals are angularly fixed in orientation relative to each other using registering structures such as complementary tabs and sockets. More specifically, the seams where the semi-conical flaps abut are angularly off-set between the two conical gaskets by a predetermined amount.
Claims20
A seal for a bleed-back control valve, comprising:
- a downstream conical gasket having a conical wall comprising a blunted apex at a downstream end and a base flange at an upstream end, the conical wall of the downstream conical gasket being divided through the blunted apex of the downstream conical gasket into a plurality of edge-abutting semi-conical flaps defining seams, the base flange having at least one first registering structure disposed on an upstream surface of the downstream conical gasket;
- and
- an upstream conical gasket having a conical wall comprising a blunted apex at a downstream end and a base flange at an upstream end, the conical wall of the upstream conical gasket being divided through the blunted apex of the upstream conical gasket into a plurality of edge-abutting semi-conical flaps defining seams, the base flange of the upstream conical gasket having at least one second registering structure disposed on a downstream surface of the upstream conical gasket complementary to, and thus adapted to engage, the at least one first registering structure disposed on the upstream surface of the downstream conical gasket, wherein the seams of the upstream conical gasket are angularly off-set from the seams of the downstream conical gasket by a predetermined amount.
A valve, comprising:
- a valve body comprising an inner luminal wall extending from an upstream opening to a downstream opening;
- a downstream conical gasket having a conical wall comprising a blunted apex at a downstream end and a base flange at an upstream end, the conical wall of the downstream conical gasket being divided through the blunted apex of the downstream conical gasket into a plurality of edge-abutting semi-conical flaps defining seams, the base flange having at least one first registering structure disposed on an upstream surface of the downstream conical gasket;
- an upstream conical gasket having a conical wall comprising a blunted apex at a downstream end and a base flange at an upstream end, the conical wall of the upstream conical gasket being divided through the blunted apex of the upstream conical gasket into a plurality of edge-abutting semi-conical flaps defining seams, the base flange of the upstream conical gasket having at least one second registering structure disposed on a downstream surface of the upstream conical gasket complementary to, and thus adapted to engage, the at least one first registering structure disposed on the upstream surface of the downstream conical gasket, wherein the seams of the upstream conical gasket are angularly off-set from the seams of the downstream conical gasket by a predetermined amount;
- a mounting groove in the inner luminal wall sized to simultaneously receive the base flanges of the upstream and downstream conical gaskets in a mounted relation;
- and
- a frustoconical valve seat supportively receiving a downstream surface of the conical wall of the downstream conical gasket, the frustoconical valve seat defining an orifice in fluid communication with a space defined by the inner luminal wall of the valve body, wherein the blunted apex of the downstream conical gasket protrudes through the orifice.
3 more elements
Dependencies are inferred from the claim text.