Implantable access devices
First Claim
1. An implantable patient access port for permitting access to an internal catheter by an external filament such as a catheter, needle, wire or optical fiber comprising:
- a housing defining an entrance orifice and an exit orifice, a passageway communicating said entrance orifice with said exit orifice, said housing causing said filament introduced into said entrance orifice to be directed to enter and pass through said passageway,at least one articulating valve positioned within said housing passageway which normally remains closed to provide resistance to flow of fluids through said valve, yet opens to permit said filament to pass through said valve enabling said filament to communicate with said internal catheter through said exit orifice, andsaid housing having a tapered configuration which increases in width along smooth surfaces from said exit orifice toward said entrance orifice in a manner enabling said port to be inserted through a skin incision in a manner that the skin is stretched by insertion of said port.
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Accused Products
Abstract
An access port for implantation within the body of a patient for providing repeated access to a specific site within the patient and communicating with the site by an implanted internal catheter. The access ports in accordance with this invention include a housing having an inlet orifice leading to a reduced diameter guide passageway. An external filament such as a needle, guide wire, optical fiber, or external catheter can be introduced into the access device and fed through the housing. This system allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to the specific site within the patient.
235 Citations
19 Claims
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1. An implantable patient access port for permitting access to an internal catheter by an external filament such as a catheter, needle, wire or optical fiber comprising:
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a housing defining an entrance orifice and an exit orifice, a passageway communicating said entrance orifice with said exit orifice, said housing causing said filament introduced into said entrance orifice to be directed to enter and pass through said passageway, at least one articulating valve positioned within said housing passageway which normally remains closed to provide resistance to flow of fluids through said valve, yet opens to permit said filament to pass through said valve enabling said filament to communicate with said internal catheter through said exit orifice, and said housing having a tapered configuration which increases in width along smooth surfaces from said exit orifice toward said entrance orifice in a manner enabling said port to be inserted through a skin incision in a manner that the skin is stretched by insertion of said port. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable patient access port for permitting access to an internal catheter by a filament such as an external catheter, needle, wire or optical fiber comprising:
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a housing defining an entrance orifice and an exit orifice, a passageway communicating said entrance orifice with said exit orifice, said housing causing a filament introduced into said entrance orifice to be directed to enter and pass through said passageway; and means for inserting said port through a skin incision in a patient having a width being less than a maximum width of said port, said inserting means including a tapered configuration of said housing which smoothly increases in width from said exit orifice along smooth surfaces toward said entrance orifice in a manner such that said skin incision is stretched by insertion of said port until enabling said port to be inserted through said skin incision. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification