Pressure Activated Proximal Valves

摘要

A method for using a medical device in connection with a catheter for regulation or transfer of fluids to and from a patient. The method may include obtaining and using a medical device including a diaphragm having two unidirectional slit valves disposed therein that actuate in different directions, one slit valve actuating in one direction in response to infusion-induced pressure and another slit valve actuating in another direction in response to aspiration-induced pressure. The method may include infusing fluid through one of the unidirectional slit valves, through a lumen, and into a patient's body. The method may also include aspirating fluid from a patient's body through the lumen and another unidirectional slit valve.

主权项

1. A method, comprising:
obtaining a device, comprising:
a lumen through which fluid can pass; anda diaphragm including:
a first unidirectional slit valve structurally configured to actuate to allow flow of fluid through the lumen in a first direction in response to an infusion-induced pressure and to remain closed when subjected to aspiration-induced pressures; anda second unidirectional slit valve structurally configured to actuate to allow flow of a second fluid through the lumen in a second direction different from the first direction in response to an aspiration-induced pressure and to remain closed when subjected to infusion-induced pressures; and causing fluid to pass through the first unidirectional slit valve and flow through the lumen in the first direction.