Valve port and method for vascular access
First Claim
Patent Images
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 externally clamped; and
percutaneously inserting an access tube into the access port, wherein the inserting step relieves the external clamping to permit fluid flow through the conduit.
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Abstract
An access port comprises a base and a flexible conduit. The port is subcutaneously implanted and the conduit is attached directly or indirectly to a blood vessel or other body lumen or cavity. An actuator mechanism is provided with a linkage which opens a valve in the port in response to percutaneous insertion of a needle into the access port. In particular, insertion of the needle opens the clamping mechanism to permit flow through the conduit between the blood vessel and the needle.
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Citations
124 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 externally clamped; and percutaneously inserting an access tube into the access port, wherein the inserting step relieves the external clamping to permit fluid flow through the conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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; and percutaneously inserting an access tube into the access port, wherein the access tube engages a linkage which opens a valve structure in the conduit which is located remotely from the portion of the access port into which the access tube has been inserted. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. 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; and percutaneously inserting an access tube into a tapered bore in a tube seat in the port to establish a generally fluid tight seal therewith; wherein insertion of the access tube actuates a linkage to open a valve disposed distally of the tube seat to permit flow to the conduit. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. 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; and percutaneously inserting a rigid access tube into a cylindrical passage in the access port in a vertical orientation, wherein the passage is connected to the conduit through an elbow of from 75°
to 105°
. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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70. An implantable port comprising:
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a base having a passage with (a) an inlet for receiving an access tube and (b) an outlet; a linkage actuated by insertion of an access tube into the inlet; and a valve structure which opens the passage downstream from the inlet in response to actuation of the linkage by an access tube. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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87. An implantable port comprising:
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a base having a passage for receiving an access tube; a flexible conduit disposed to establish fluid flow with an access tube inserted through the passage; and a clamp disposed externally about the flexible conduit, wherein the clamp opens about the conduit to permit fluid flow therethrough when an access tube is inserted into the passage and closes over the conduit when the access tube is removed from the passage. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95, 96, 97)
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98. An implantable port comprising:
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a base having a cylindrical inlet passage for receiving an access tube, and an outlet passage disposed to receive fluid flow from an access tube inserted through the inlet passage; wherein the inlet passage is oriented along a vertical axis and the outlet passage is disposed along a horizontal axis. - View Dependent Claims (99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111)
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112. An implantable port comprising:
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a base having a first passage for receiving an access tube; a flexible conduit disposed through a second passage in the base; an actuator assembly reciprocatably received in the base having a bore aligned with the first passage for receiving the access tube, wherein a proximal end of the flexible conduit is mechanically coupled to the bore in the actuator assembly; and a spring for urging the actuator assembly to a first position in the base wherein the relative position of the actuator assembly and the second passage closes the flexible conduit and wherein insertion of the access tube into the first passage shifts the actuator assembly to a second position which opens the flexible conduit. - View Dependent Claims (113, 114, 115, 116, 117, 118, 119, 120, 121, 122)
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123. 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 is aligned with the passage and receives the access tube; a pair of balls disposed between the passage in the base and the bore in the valve, wherein the balls are spring-biased to close against and lock the access tube when the access tube is inserted through the passage and port. - View Dependent Claims (124)
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Specification