Apparatus and method for limiting access to septum
First Claim
Patent Images
1. Apparatus for limiting percutaneous access by needle to a septum in a device implanted in a body, comprising:
- a screen member covering the septum, the screen member having a plurality of openings, said openings being of a predetermined size, and screen member further having an outlet surface and an inner surface and wherein said openings taper inwardly from said outer surface to said inner surface, such that said openings are larger at said outer surface than at said inner surface and that needles larger than said predetermined size will not pass through said screen member and penetrate the septum, andmeans for fixing said screen member in position covering the septum.
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Abstract
An apparatus and method for limiting access to a septum in a body implanted device. The apparatus includes a screen member which covers the septum. The screen member has a plurality of openings which are sized such that needles larger than a predetermined size will not pass through the openings. Needles of a size less than the predetermined size of the openings will pass through and be provided access to the septum.
93 Citations
12 Claims
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1. Apparatus for limiting percutaneous access by needle to a septum in a device implanted in a body, comprising:
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a screen member covering the septum, the screen member having a plurality of openings, said openings being of a predetermined size, and screen member further having an outlet surface and an inner surface and wherein said openings taper inwardly from said outer surface to said inner surface, such that said openings are larger at said outer surface than at said inner surface and that needles larger than said predetermined size will not pass through said screen member and penetrate the septum, and means for fixing said screen member in position covering the septum.
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2. In an implantable drug pump having a reservoir for containing the drug, a reservoir fill port septum, catheter means for connecting the reservoir with the location within the body where the drug is to be administered, and a catheter access port septum for direct access to the catheter means, an apparatus for limiting access to the catheter access port septum comprising:
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a screen member covering the catheter access port septum, the screen member having a plurality of openings, said openings being a predetermined size, said screen member further having an outer surface and an inner surface and wherein said openings taper inwardly from said outer surface to said inner surface, such that said openings are larger at said outer surface than at said inner surface and that needles larger than said predetermined size will not pass through said screen member and penetrate the septum, and means for fixing said screen member in position covering the catheter access port septum.
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3. An implantable drug pump having a drug storage reservoir and means to pump the drug through a catheter to a desired location in the body, the drug pump comprising:
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a reservoir fill port septum for providing percutaneous access to the reservoir; an outlet port connected to the reservoir; a catheter access port in fluid communication with said outlet port; a catheter access port septum affixed to said catheter access port for providing percutaneous access to said catheter access port, and a screen member covering said catheter access port septum, the screen member having a plurality of openings, said openings being of a predetermined size, such that needles larger than said predetermined size will not pass through said screen member and penetrate the catheter access port septum. - View Dependent Claims (4, 5)
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6. In an implantable drug pump having a reservoir for containing the drug, a reservoir fill port septum, catheter means for connecting the reservoir with the location within the body where the drug is to be administered, and a catheter access port septum for direct access to the catheter means, a method for preventing penetration of the catheter access port septum when the drug reservoir is refilled comprising:
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covering the catheter access port septum with a screen member, the screen member having a plurality of openings, said openings being of a predetermined size, such that needles larger than said predetermined size will not pass through said screen member and penetrate the catheter access port septum, and providing a refill kit for use when the reservoir is refilled, said refill kit including a hypodermic needle larger than said predetermined size. - View Dependent Claims (7, 8)
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9. In an implantable drug pump having a reservoir for containing the drug, a reservoir fill port septum, catheter means for connecting the reservoir with the location within the body where the drug is to be administered, and a catheter access port septum for direct access to the catheter means, a method for limiting access to the catheter access port septum comprising:
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covering the catheter access port septum with a screen member, the screen member having a plurality of openings, said openings being of a predetermined size, said screen member further having an outer surface and an inner surface and wherein said openings taper inwardly from said outer surface to said inner surface, such that said openings are larger at said outer surface than at said inner surface and that needles larger than said predetermined size will not pass through said screen member and penetrate the septum, and connecting said screen member to the implantable drug pump in a location such that the catheter access port septum is covered.
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10. A method of filling a drug reservoir in an implanted drug pump, the drug pump having a reservoir fill port septum, an outlet port for connection to a catheter, a catheter access port and a catheter access port septum, the method comprising:
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covering the catheter access port septum with a screen member, the screen member having a plurality of openings, said openings being of a predetermined size, such that needles larger than said predetermined size will not pass through said screen member and penetrate the catheter access port septum, and selecting a hypodermic needle larger than said predetermined size, and filing said hypodermic needle with a desired quantity and type of fluid medication, and percutaneously inserting said hypodermic needle through the reservoir fill port septum into the reservoir and injecting the drug into the reservoir. - View Dependent Claims (11, 12)
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Specification