Hemostasis valve
AssigneePenumbra, Inc.
InventorVinita Verma
Life of this patent
Estimating the term…
Abstract
A hemostasis valve for use with catheters in intravascular procedures. The hemostasis valve comprising a sealable fluid channel that bifurcates from a single distal lumen to two proximal lumens. An upper proximal lumen may include a funnel shaped opening to improve aspiration potential. Rotating locking mechanisms are attachable at the ends of the hemostasis valve to interlock coaxial devices or to form seals around coaxial devices. Injection molding may be used to manufacture a hemostasis valve and its components. A mold and core pins may impart external and internal shapes to a molten polymer. Once the polymer has cooled, the molded component is separated from any pins or molds and attached to other molded components to form an assembled hemostasis valve.
Claims3
A system, comprising:
- a first mold, wherein:
- a hyperbolic paraboloid pin, an upper pin, and a linear pin are positioned at least partially into the first mold, whereby the pins form a portion of a distal lumen that bifurcates into two proximal lumens and a bifurcation surface that is setback from an intersection point between the two proximal lumens;
- and
- at least one of the two proximal lumens includes at least a portion of a funnel section;
- a first polymer, wherein:
- the first polymer is heated until it is partially or completely molten;
- the partially or completely molten first polymer is poured into the first mold;
- the first polymer is allowed to cool until hardened;
- the hyperbolic paraboloid pin, the upper pin, and the linear pin are removed;
- and
- the first molded polymer is removed from the first mold;
- a tapered pin positioned into a second mold, whereby the tapered pin forms a remaining portion of the distal lumen with a smaller distal opening and a larger proximal opening, wherein the second mold includes a mating feature to interlock with the first molded polymer;
- and
- a second polymer, wherein:
- the second polymer is heated until it is partially or completely molten;
- the partially or completely molten second polymer is poured into the first mold;
- the second polymer is allowed to cool until hardened;
- the tapered pin is removed;
- a second molded polymer is removed from the second mold;
- and
- the second molded polymer is adhered to the first molded polymer.
Dependencies are inferred from the claim text.