Micro-injection port
First Claim
1. An implantable subcutaneous injection port comprising,a rigid housing, said housing having a substantially flat top wall, a substantially flat bottom wall and a side wall connecting the periphery of said top and bottom walls,means defining an injection chamber in said rigid housing,an opening in said side wall,a septum captured by said housing and sealing said opening in said side wall, said septum having a puncture area occupying a substantial portion of the projected side wall area of the housing when viewed along the centerline of the septum, andan exit port communicating with said chamber and passing through said side wall.
1 Assignment
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Accused Products
Abstract
A micro-injection port having a low profile is provided. The micro-injection port has a septum and an injection chamber located side-by-side. When implanted, the puncture surface of the septum lies substantially perpendicular to the surface of the skin. The micro-injection port also has a filter system. The filter is formed from an opening in the side wall of the injection port and a shaft secured within the opening.
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Citations
23 Claims
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1. An implantable subcutaneous injection port comprising,
a rigid housing, said housing having a substantially flat top wall, a substantially flat bottom wall and a side wall connecting the periphery of said top and bottom walls, means defining an injection chamber in said rigid housing, an opening in said side wall, a septum captured by said housing and sealing said opening in said side wall, said septum having a puncture area occupying a substantial portion of the projected side wall area of the housing when viewed along the centerline of the septum, and an exit port communicating with said chamber and passing through said side wall.
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13. An implantable subcutaneous injection port comprising,
a rigid housing defining an injection chamber, said housing having a side wall and said injection chamber having a height, an opening in said side wall, and a septum captured by said housing and sealing said opening in said side wall, wherein said septum has a puncture length and the puncture length of said septum is greater than the height of said housing.
- 14. An implantable subcutaneous injection port having a rigid housing with rigid walls defining an injection chamber, said housing having a height, an opening in said housing sealed off by a septum having an outside facing surface and a puncture length, and wherein the distance from the outside facing surface of the septum to the wall of the injection chamber opposite said septum is greater than the height of the housing.
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21. An implantable subcutaneous injection port comprising,
a rigid housing defining an injection chamber, said housing characterized by a rigid tubular wall closed off at one end by a rigid side wall, and closed off at the opposite end by a septum, the length of the tubular wall being greater than the diameter of the tubular wall, and an exit port communicating with said injection chamber through said side wall.
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23. A method for implanting a subcutaneous injection port having an injection chamber and a septum for accessing the injection chamber comprising,
making an incision in the skin, placing the injection port beneath the skin, attaching the injection port to the subcutaneous tissue at a single point remote from the septum so that the septum may be rotated substantially parallel to the skin about the axis defined by the single point of attachment, and closing the incision.
Specification