Valve port assembly with interlock
First Claim
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1. A dual port valve assembly comprising:
- a first access port connectable to a conduit or a blood vessel, said first access port having a passage which removably receives an access tube;
a second access port connectable to a conduit or a blood vessel, said second access port having a passage which removably receives an access tube with a valve which opens and closes the passage; and
a linkage coupled between the first access port and the second port, wherein the linkage closes the valve in the second access port in absence of an access tube in the first access port.
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Abstract
A dual port vascular access assembly comprises a first access port and a second access port. The linkage is coupled between the first access port to close the second access port in the absence of an access tube in the first access port. Such port assemblies are particularly useful for implantation in patients receiving hemodialysis. By connecting the first access port to the blood withdrawal side of the system, blood withdrawal will be automatically terminated upon cessation of blood returned to due loss of the return access tube in the port assembly.
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Citations
28 Claims
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1. A dual port valve assembly comprising:
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a first access port connectable to a conduit or a blood vessel, said first access port having a passage which removably receives an access tube; a second access port connectable to a conduit or a blood vessel, said second access port having a passage which removably receives an access tube with a valve which opens and closes the passage; and a linkage coupled between the first access port and the second port, wherein the linkage closes the valve in the second access port in absence of an access tube in the first access port. - View Dependent Claims (2, 3)
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4. A dual port valve assembly comprising:
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a base having a venous passage for receiving a venous access tube and an arterial passage for receiving an arterial access tube; a venous conduit disposed to establish blood flow with the venous access tube inserted through the venous port; a venous valve disposed to permit flow from the venous access tube through the venous conduit when opened and to block flow from the venous access tube through the venous conduit when closed; an arterial conduit disposed to establish blood flow with the arterial access tube inserted through the arterial port; an arterial valve disposed to permit flow from the arterial access tube through the arterial conduit when opened and to block flow from the arterial access tube through the arterial conduit when closed; and a first linkage assembly which opens the arterial valve when the venous access tube is present in the venous passage and which closes the arterial valve when the venous access tube is removed from the venous passage. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An improved dual port valve assembly of the type comprising a base, a first access port for receiving an access tube, a second access port for receiving an access tube, a first outlet fluidly connected to the first access port, and a second outlet fluidly coupled to the second access port, wherein the improvement comprises an interlock mechanism which prevents flow between the first access port and the first outlet which there is no access tube present in the second access port.
Specification