Septum
First Claim
1. A septum comprising, a unit with a pair of opposing needle penetrable seal members, a chamber within said unit for receiving fluid, needle stop means provided between said needle penetrable seal members for preventing a needle that penetrates one of said needle penetrable seal member from passing though the other said needle penetrable seal member, said needle stop means including a first needle stop section that extends substantially across said one chamber and divides said one chamber into two fill chamber section, and means for permitting communication between said fill chamber sections.
1 Assignment
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Accused Products
Abstract
The septum includes a unit with two fill chamber sections, each having a corresponding needle penetrable seal member for sealing the respective fill chamber sections. The seal members are oppositely disposed and thereby permit access to a corresponding fill chamber section at two different orientations of the septum. Thus, when the septum has flipped over from its original position, one of the fill chamber sections continues to remain accessible for fluid infusion and/or fluid withdrawal. A needle stop portion in the unit which forms a partition between the fill chamber sections prevents a needle that has entered one of the fill chamber sections from passing out of the other fill chamber section. In several embodiments of the invention, the partitioning needle stop section is moveable and in other embodiments of the invention, the partitioning needle stop section is immoveable. Thus there is provision for expanding and contracting the fill chamber sections in some of the embodiments of the invention. In all embodiments of the invention the fill chamber sections are communicable.
105 Citations
17 Claims
- 1. A septum comprising, a unit with a pair of opposing needle penetrable seal members, a chamber within said unit for receiving fluid, needle stop means provided between said needle penetrable seal members for preventing a needle that penetrates one of said needle penetrable seal member from passing though the other said needle penetrable seal member, said needle stop means including a first needle stop section that extends substantially across said one chamber and divides said one chamber into two fill chamber section, and means for permitting communication between said fill chamber sections.
- 13. A septum comprising, an implantable unit with two fill chamber sections, a pair of needle penetrable seal means for sealing the respective fill chamber sections, an needle stop means provided between said needle penetrable seal means for preventing a needle that penetrates one of said needle penetrable seal means from passing through the other said needle penetrable seal means, said needle stop means including a movable needle stop section.
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17. A method of making a septum comprising,
(a) forming an implantable unit with a pair of fill chamber sections that are divided by a needle stop section, (b) sealing the fill chamber sections with respective opposing needle penetrable seal members. (c) establishing communication between each of said fill chamber sections, and (d) providing fluid flow means for directing flow of fluid away from and/or toward said fill chamber sections.
Specification