Pressure controlled valve apparatus
First Claim
1. A pressure controlled valve apparatus for use with a catheter to selectively control fluid flow therefrom comprising a fluid reservoir coupled to the catheter through an inlet port including a primary fluid reservoir chamber to receive fluid from the catheter having a primary outlet formed in the lower portion thereof and a fluid flow control including a primary control valve selectively movable between a first and second position, said primary control valve disposed to seal said primary outlet when in said first position and to unseal said primary outlet when in said second position in response to a first predetermined pressure to release fluid from the catheter and said primary fluid reservoir chamber, said primary control valve comprises an outer hollow substantially cylindrical valve element including a lower valve bias seat formed therein and an inner hollow substantially cylindrical valve element including an upper valve bias seat formed therein, said inner hollow substantially cylindrical valve element movable between a first and second position disposed in spaced relationship relative to said outer hollow valve element to cooperatively form a substantially cylindrical fluid flow feed channel therebetween such that fluid flow through said substantially cylindrical fluid flow feed channel maintains said inner hlllow substantially cylindrical valve element in said second position until said primary fluid reservoir chamber is empty, and a bias means operative disposed in said lower valve bias seat and said upper valve bias seat to normally maintain said inner hollow valve element in said first position, flow through said primary control valve holds said inner valve element in the second position by capillary force created by fluid flow through said fluid flow channel and thereafter when fluid from the primary valve ceases to occur.
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Accused Products
Abstract
A pressure controlled valve apparatus for use with a catheterized bladder or the like to selectively control fluid flow therefrom comprising a fluid reservoir including a primary fluid reservoir chamber and a secondary fluid reservoir chamber in open fluid communication relative to each other to receive fluid from the catheterized bladder and a fluid flow control including a primary control valve and a secondary control valve each selectively movable between a first and second position, the primary control valve disposed to seal the primary fluid reservoir chamber when in the first position and to unseal the primary fluid reservoir chamber when in the second position in response to a first predetermined pressure to release fluid from the catheterized bladder and the primary fluid reservoir chamber to a fluid collection container and the secondary control valve disposed to seal the secondary fluid reservoir chamber when in the first position and to unseal the secondary fluid reservoir chamber when in the second position in response to a second predetermined pressure to release fluid from the catheterized bladder and the secondary fluid reservoir chamber to a fluid collection container.
35 Citations
30 Claims
- 1. A pressure controlled valve apparatus for use with a catheter to selectively control fluid flow therefrom comprising a fluid reservoir coupled to the catheter through an inlet port including a primary fluid reservoir chamber to receive fluid from the catheter having a primary outlet formed in the lower portion thereof and a fluid flow control including a primary control valve selectively movable between a first and second position, said primary control valve disposed to seal said primary outlet when in said first position and to unseal said primary outlet when in said second position in response to a first predetermined pressure to release fluid from the catheter and said primary fluid reservoir chamber, said primary control valve comprises an outer hollow substantially cylindrical valve element including a lower valve bias seat formed therein and an inner hollow substantially cylindrical valve element including an upper valve bias seat formed therein, said inner hollow substantially cylindrical valve element movable between a first and second position disposed in spaced relationship relative to said outer hollow valve element to cooperatively form a substantially cylindrical fluid flow feed channel therebetween such that fluid flow through said substantially cylindrical fluid flow feed channel maintains said inner hlllow substantially cylindrical valve element in said second position until said primary fluid reservoir chamber is empty, and a bias means operative disposed in said lower valve bias seat and said upper valve bias seat to normally maintain said inner hollow valve element in said first position, flow through said primary control valve holds said inner valve element in the second position by capillary force created by fluid flow through said fluid flow channel and thereafter when fluid from the primary valve ceases to occur.
- 20. A pressure controlled valve apparatus for use with a catheter to selectively control fluid flow therefrom comprising a fluid reservoir including a primary fluid reservoir chamber and a secondary fluid reservoir chamber in open fluid communication relative to each other to receive fluid from the catheter and a fluid flow control including a primary control valve and a secondary control valve each selectively movable between a frrst and second position, the primary control valve disposed to seal said primary fluid reservoir chamber when in said first position and to unseal said primary fluid reservoir chamber when in said second position in response to first predetermined pressure to release fluid from the catheter and said primary fluid reservoir chamber to a fluid collection container and said secondary control valve disposed to seal said secondary fluid reservoir chamber when in said first position and to unseal said secondary fluid reservoir chamber when in said second position in response to a second predetermined pressure to release fluid from the catheter and said secondary fluid reservoir chamber to said fluid collection container, said primary and secondary control valves each comprising an outer valve element and a concentric inner valve element cooperatively forming a fluid flow feed channel between then such that fluid flow through said primary control valve holds the inner valve element in said second position by capillary force created by fluid flow through fluid flow feed channel and thereafter when flow from primary valves ceases to occur.
Specification