Access portal and method
First Claim
Patent Images
1. A portal for subcutaneous implantation comprising:
- a housing having a lumen accessible through a first open end;
the lumen including an inner wall, the inner wall having an adhesion promoter thereon adjacent the first open end, said lumen having a longitudinal axis; and
a cured in place elastomeric septum having an outer periphery bonded to the inner wall adjacent the first open end of the housing said septum cured in place by injection molding said septum into said open end, said septum having a vertical dimension in the direction of said longitudinal axis and being axially, non-compressively held within said lumen along at least a first portion of said vertical dimension.
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Abstract
The present invention provides a portal for subcutaneous implantation, where the portal includes a housing having a first end, a second end, an inner wall, and a lumen between the first and second open ends. In one preferred embodiment, the first open end of the housing is sealed by a elastomeric septum, which has been injection molding into place. The elastomeric septum is bonded to the inner wall of the housing adjacent the first open end. The second open end is sealed to define a reservoir accessible through the septum.
268 Citations
36 Claims
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1. A portal for subcutaneous implantation comprising:
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a housing having a lumen accessible through a first open end;
the lumen including an inner wall, the inner wall having an adhesion promoter thereon adjacent the first open end, said lumen having a longitudinal axis; anda cured in place elastomeric septum having an outer periphery bonded to the inner wall adjacent the first open end of the housing said septum cured in place by injection molding said septum into said open end, said septum having a vertical dimension in the direction of said longitudinal axis and being axially, non-compressively held within said lumen along at least a first portion of said vertical dimension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A portal for subcutaneous implantation, the portal comprising:
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a housing having a first open end and a second end having a lumen therebetween, the lumen including an inner wall; an elastomeric septum positioned in the lumen of the housing against the inner wall adjacent the first open end of the housing, the septum having an outer periphery; and a planar member sealing the second end of the housing so as to define a sealed reservoir accessible through the septum, said planar member having a planar dimension not significantly larger than that of said second end, said planar member spaced from said outer periphery of said septum, wherein an air space is defined between said planar member and said outer periphery of said septum. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A portal for subcutaneous implantation comprising:
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a housing having a first open end, and a lumen therebetween, a portion of the lumen having an adhesion promoter thereon adjacent the first open end; a cured in place silicone septum sealing the first open end wherein the septum is injection molded into the first open end at the location of the adhesion promoter so as to be integrally formed with said lumen; and means for sealing the second open end. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A portal for subcutaneous implantation comprising:
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a silicone septum with first and second opposite surfaces, the second surface being undulated, the septum having a side surface; an insert engaging the septum, the second surface of the septum facing the insert; a housing holding the septum and the insert; and an adhesion promoter between the side surface of the septum and the housing, wherein the septum includes a flanged region and a non-flanged region along the side surface of the septum, and the insert forcibly squeezes the flanged region but not the non-flanged region, and wherein the septum is injection molded into the housing so as to be integrally formed with said lumen. - View Dependent Claims (35, 36)
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Specification