Dual reservoir vascular access port with two-piece housing and compound septum
First Claim
1. A vascular access port having a plurality of distinct fluid reservoirs, said access port comprising:
- a. a needle-impenetrable base, said base comprising;
i. a bottom wall;
ii. an encircling sidewall upstanding from said bottom wall; and
iii. an interior wall upstanding from said bottom wall and interconnecting a pair of nonadjacent locations on the interior of said encircling sidewall, thereby defining interior of said encircling sidewall a first fluid reservoir having a first inner floor and a second fluid reservoir on opposite sides of said interior wall having a second inner floor;
b. a needle-impenetrable cap configured to receive said base therein, said cap comprising;
i. a top wall;
ii. an encircling skirt depending from said top wall;
iii. a first access aperture formed through said top wall at a position that communicates with said first fluid reservoir, when said base is received in said cap; and
iv. a second access aperture formed through said top wall at a position that communicates with said second fluid reservoir, when said base is received in said cap; and
c. a needle-penetrable elastomeric compound septum comprising;
i. a first target dome disposed in said first access aperture sealing said first access aperture, when said base is received in said cap with said compound septum disposed therebetween;
ii. a second target dome disposed in said second access aperture sealing said second access aperture, when said base is received in said cap with said compound septum disposed therebetween; and
iii. a septum web integrally formed with and interconnecting said first target dome and said second target dome, the side of said septum web opposite from said first target dome and said second target dome defining a lower side of said septum web, said septum web being so configured as to effect fluid isolation of said first fluid reservoir from said second fluid reservoir, when said base is received in said cap with said compound septum disposed therebetween.
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Accused Products
Abstract
A vascular access port enclosing a pair of distinct fluid reservoirs includes a two-piece housing that captures an integrally-formed compound septum to seal both of the fluid reservoirs for selective access with a hypodermic needle. The housing includes a base that defines the fluid reservoirs and a cap in which the base is received with the compound septum therebetween. The compound septum includes two distinct target domes that are exposed to the exterior of the housing through respective access apertures in the cap, when the compound septum is captured in the housing. A planar septum web interconnects and encircles the target domes. The side of the septum web opposite from the target domes is formed into a recessed isolation groove that traverses the septum web between the target domes. Sealing ridges depend from this side of the septum web on either side of the isolation groove. The outlet stem of the access port is integrally formed with the base of the housing. In the base an open-topped fluid channel communicates from each fluid reservoir to a corresponding enclosed fluid passageway in the outlet stem. The open top of each fluid channel is closed by a portion of the compound septum captured in the housing.
235 Citations
51 Claims
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1. A vascular access port having a plurality of distinct fluid reservoirs, said access port comprising:
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a. a needle-impenetrable base, said base comprising; i. a bottom wall; ii. an encircling sidewall upstanding from said bottom wall; and iii. an interior wall upstanding from said bottom wall and interconnecting a pair of nonadjacent locations on the interior of said encircling sidewall, thereby defining interior of said encircling sidewall a first fluid reservoir having a first inner floor and a second fluid reservoir on opposite sides of said interior wall having a second inner floor; b. a needle-impenetrable cap configured to receive said base therein, said cap comprising; i. a top wall; ii. an encircling skirt depending from said top wall; iii. a first access aperture formed through said top wall at a position that communicates with said first fluid reservoir, when said base is received in said cap; and iv. a second access aperture formed through said top wall at a position that communicates with said second fluid reservoir, when said base is received in said cap; and c. a needle-penetrable elastomeric compound septum comprising; i. a first target dome disposed in said first access aperture sealing said first access aperture, when said base is received in said cap with said compound septum disposed therebetween; ii. a second target dome disposed in said second access aperture sealing said second access aperture, when said base is received in said cap with said compound septum disposed therebetween; and iii. a septum web integrally formed with and interconnecting said first target dome and said second target dome, the side of said septum web opposite from said first target dome and said second target dome defining a lower side of said septum web, said septum web being so configured as to effect fluid isolation of said first fluid reservoir from said second fluid reservoir, when said base is received in said cap with said compound septum disposed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vascular access port having a plurality of distinct fluid reservoirs, said access port comprising:
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a. a needle-impenetrable housing enclosing a first fluid reservoir and a second fluid reservoir, said housing defining a first access aperture communicating through said housing with said first fluid reservoir and a second access aperture communicating through said housing with said second fluid reservoir, said housing comprising; i. a needle-impenetrable base having a flat inner floor and walls normal thereto and upstanding therefrom, said walls defining said first fluid reservoir and said second fluid reservoir; ii. an outlet stem integrally formed with said base projecting from the exterior of one of said walls thereof and enclosing in side-by-side relationship extending longitudinally therethrough a first fluid passageway and a second fluid passageway; iii. an open-topped first fluid channel communicating between said first fluid reservoir and said first fluid passageway in said outlet stem; iv. an open-topped second fluid channel communicating between said second fluid reservoir and said second fluid passageway in said outlet stem; and v. a needle-impenetrable cap configured to receive said base, said cap comprising a top wall having formed therethrough said first access aperture and said second access aperture; b. a needle-penetrable elastomeric first septum captured by said housing and sealing said first access aperture, said first septum comprising; i. a first target dome positioned in said first access aperture, when said base is received in said cap with said first septum disposed therebetween; and ii. a first septum web integrally formed with and encircling said first target dome, a portion of said first septum web closing the open top of said first fluid channel, when said base is received in said cap with said first septum disposed therebetween; and c. a needle-penetrable elastomeric second septum captured by said housing and sealing said second access aperture, said second septum comprising; i. a second target dome positioned in said second access aperture, when said base is received in said cap with said second septum disposed therebetween; and ii. a second septum web integrally formed with and encircling said second target dome, a portion of said second septum web closing the open top of said second fluid channel, when said base is received in said cap with said second septum disposed therebetween. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A compound septum for use in an implantable dual reservoir vascular access port of the type having a needle-impenetrable housing enclosing distinct first and second fluid reservoirs accessible from the exterior of the access port through corresponding first and second access apertures formed through a wall of the housing, said compound septum comprising:
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a. a needle-penetrable elastomeric first target dome exposable to the exterior of the housing through the first access aperture; b. a needle-penetrable elastomeric second target dome exposable to the exterior of the housing through the second access aperture; c. an elastomeric septum web integrally formed with and interconnecting said first target dome and said second target dome, the side of said septum web opposite from said first target dome and said second target dome defining a lower side of said septum web, said septum web being enclosed in the housing when said first target dome and said second target dome are exposed to the exterior of the housing through the first access aperture and the second access aperture, respectively; and d. reservoir segregation means located between said first target dome and said second target dome on said lower side of said septum web for isolating the first fluid reservoir from the second fluid reservoir. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A compound septum for use in a implantable dual reservoir vascular access port of the type having a needle-impenetrable housing enclosing distinct first and second fluid reservoirs accessible from the exterior of the access port through corresponding first and second access apertures formed through a wall of the housing, said compound septum comprising:
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a. a needle-penetrable elastomeric first target dome exposable to the exterior of the housing through the first access aperture; b. a needle-penetrable elastomeric second target dome exposable to the exterior of the housing through the second access aperture; and c. an elastomeric septum web integrally formed with and interconnecting said first target dome and said second target dome, the side of said septum web opposite from said first target dome and said second target dome defining a lower surface of said septum web, said septum web being enclosed in the housing when said first target dome and said second target dome are exposed to the exterior of the housing through the first access aperture and the second access aperture, respectively; d. an isolation groove recessed into and traversing said lower surface of said septum web intermediate said first target dome and said second target dome; e. a first sealing ridge depending from said lower surface of said septum web proximate and parallel to said isolation groove; and f. a second sealing ridge depending from said lower surface of said septum web proximate and parallel to said isolation groove on the side of said isolation groove opposite from said first sealing ridge.
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30. A base for a needle-impenetrable housing of a vascular access port of the type having a first fluid reservoir with a first inner floor and a second fluid reservoir with a second inner floor, the first and second fluid reservoirs being accessible from the exterior of the housing through respective first and second access apertures formed through a cap of the housing that receives the base of the housing in the assembled condition of the housing, said base comprising:
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a. a bottom wall; b. an encircling sidewall upstanding from said bottom wall; c. an interior wall upstanding from said bottom wall interconnecting a pair of non-adjacent locations on the interior of said encircling sidewall, thereby defining interior of said encircling sidewall on opposite sides of said interior wall the first fluid reservoir and the second fluid reservoir of the vascular access port; d. an outlet stem integrally formed with and projecting from the exterior of said encircling sidewall of said base, said outlet stem enclosing in side-by-side relationship extending longitudinally therethrough a first fluid passageway and a second fluid passageway; e. an open-topped first fluid channel communicating between the first fluid reservoir of the access port and said first fluid passageway in said outlet stem; and f. an open-topped second fluid channel communicating between the second fluid reservoir of the access port and said second fluid passageway in said outlet stem. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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- 42. In a vascular access port of the type having a needle-impenetrable housing that encloses a fluid reservoir with an inner floor, the fluid reservoir being accessible from the exterior of the housing through an access aperture sealed by a needle-penetrable septum, the vascular access port also having an outlet stem that projects from an outer wall of the housing and that encloses a fluid passageway extending longitudinally from the free distal end of the outlet stem to the housing, the improvement comprising an open-topped fluid channel communicating between the fluid reservoir of the housing and the fluid passageway of the outlet stem, the open top of said fluid channel being closed by a portion of the septum.
Specification