Fluid flow regulating unit for intravascular catheter systems
First Claim
1. A fluid flow regulating and control unit for intravascular catheter systems used to infuse fluid, medication and the like in medical and surgical procedures comprising,a. a control housing having an operating chamber formed therein at one end and being open opposite thereto,b. a closure member slidably connected in the open end of the control housing for limited inward and outward movement relative to said operating chamber,c. said closure member having an inlet fluid passage for the fluid to be controlled,d. said control housing having an outlet manifold for the controlled fluid with at least one connector thereon for connection to the associated intravascular catheter system, and a continually open connecting port communicating at one end with the outlet manifold,e. an annular resilient member in the operating chamber connected at one end to the control housing about the connecting port and at the opposite end to the closure member, and the inner wall of the annular resilient member forming a fluid flow passage between the inlet fluid passage and the connecting port for the controlled fluid,f. a restrictor member mounted in interference fit with the inner wall of the annular resilient member, andg. said closure member and said annular resilient member operatively connected to each other to permit the closure member to exert axial forces on the annular resilient member to deform the same whereby the controlled fluid will flow around the restrictor member to the continuously open connecting port and into the associated outlet manifold for delivery to the intravascular system.
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Accused Products
Abstract
A fluid flow regulating and control unit for intravascular catheter systems used in medical and surgical procedures with a slidably mounted closure member for the control fluid to the in-dwelling catheter. Force is exerted axially on an annular resilient member causing it to deform and bypass a relatively large flow of fluid through a fluid flow passage about the outer surface of a restrictor member therein; permitting the flow to pass with a predetermined minimum flow of fluid.
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Citations
13 Claims
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1. A fluid flow regulating and control unit for intravascular catheter systems used to infuse fluid, medication and the like in medical and surgical procedures comprising,
a. a control housing having an operating chamber formed therein at one end and being open opposite thereto, b. a closure member slidably connected in the open end of the control housing for limited inward and outward movement relative to said operating chamber, c. said closure member having an inlet fluid passage for the fluid to be controlled, d. said control housing having an outlet manifold for the controlled fluid with at least one connector thereon for connection to the associated intravascular catheter system, and a continually open connecting port communicating at one end with the outlet manifold, e. an annular resilient member in the operating chamber connected at one end to the control housing about the connecting port and at the opposite end to the closure member, and the inner wall of the annular resilient member forming a fluid flow passage between the inlet fluid passage and the connecting port for the controlled fluid, f. a restrictor member mounted in interference fit with the inner wall of the annular resilient member, and g. said closure member and said annular resilient member operatively connected to each other to permit the closure member to exert axial forces on the annular resilient member to deform the same whereby the controlled fluid will flow around the restrictor member to the continuously open connecting port and into the associated outlet manifold for delivery to the intravascular system.
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11. A fluid flow regulating and control unit for intravascular catheter systems used to infuse fluid, medication and the like in medical and surgical procedures comprising,
a. control housing means having a cylindrical wall means defining an operating chamber open at one end, b. means connected to the control housing and opposite from the open end of the operating chamber having a transverse fluid flow passage extending end to end therethrough, and connecting means on each respective end for selectively and alternatively connecting catheters and monitoring gauges thereto, c. first guide support means formed in the control housing so as to project into the operating chamber, d. said first guide support having a continually open connecting passage in communication at one end with the transverse fluid flow passage, e. closure means having an annular flange slidably connected to said cylindrical wall means on the control housing to close the open end of said operating chamber and said annular flange disposed on inward movement of the closure member to engage the open end of the cylindrical means to limit inward movement thereof, f. said closure means having a second guide support disposed in assembled position to extend into the operating chamber in alignment with the first guide support, g. an annular resilient member connected at one end to the first guide support means and at the opposite end to the second guide support means and the inner periphery thereof defining a predetermined sized longitudinally extended fluid flow passage between the inlet passage and the connecting port, h. a cylindrical restrictive means having a sized outer diameter disposed in interference fit and general sealing engagement with the inner periphery of the resilient member and having an orifice therein to fix the predetermined minimum fluid flow passing from the inlet passage to the connecting port, and i. said closure member manually movable to exert an axial force on the end of said annular resilient member to deform the same whereby the seal between the restrictor means and the inner periphery of the annular resilient means will be sufficiently broken to bypass an additional and larger flow of fluid about the restrictor means to the connecting port to provide the desired flushing fluid for the flushing system.
Specification