Valve port and method for vascular access
First Claim
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1. A method for percutaneously accessing a body lumen, said method comprising:
- maintaining a conduit between an implanted access port and the body lumen, said conduit being opened and closed by a valve within the port; and
percutaneously inserting an access tube into an implanted access port, wherein inserting the access tube opens the valve and displaces at least one space-filling element into a receptacle to lock the valve open until the access tube is removed.
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Abstract
Valved ports for accessing blood vessels and other body lumens include a lock mechanism which locks the valve fully open when a needle or other access tube is placed into the port. The lock mechanism includes a latch typically comprising one or more laterally deflectable elements, such as a pair of opposed balls. The deflected elements are pushed outwardly by the needle to engage a recess in the port which locks the valve open until the needle is removed.
97 Citations
11 Claims
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1. A method for percutaneously accessing a body lumen, said method comprising:
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maintaining a conduit between an implanted access port and the body lumen, said conduit being opened and closed by a valve within the port; and
percutaneously inserting an access tube into an implanted access port, wherein inserting the access tube opens the valve and displaces at least one space-filling element into a receptacle to lock the valve open until the access tube is removed. - View Dependent Claims (2, 3, 4)
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5. An implantable port comprising:
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a base having a passage for receiving an access tube;
a valve assembly in the base, said valve assembly having a bore which receives the access tube and wherein the valve assembly opens in response to movement of the access tube; and
a valve lock having a latch which shifts position to lock the valve assembly open in response to movement of the access tube prior to seating of the access tube in the bore of the valve assembly. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification