Infusion port with modified drug reservoir
DCFirst Claim
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1. An implantable infusion port for transferring a fluid transdermally between an external container and a site within a patient'"'"'s body comprising(a) a reservoir to contain said fluid, said reservoir having a toroid-like shape characterized by a toroidal axis and a toroidal plane;
- (b) inlet means to access said reservoir, said inlet means being intersected by the toroidal axis; and
(c) outlet means from said reservoir;
whereby said reservoir can be cleaned efficiently by forcing fluid through said reservoir between said inlet means and said outlet means.
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Abstract
An implantable infusion port which comprises a fluid reservoir with inlet means and outlet means, the reservoir preferably having a toroid-like shape and outlet means directed along a tangent to the reservoir, assures more effective reservoir cleansing when the port is flushed with aqueous saline between uses.
244 Citations
29 Claims
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1. An implantable infusion port for transferring a fluid transdermally between an external container and a site within a patient'"'"'s body comprising
(a) a reservoir to contain said fluid, said reservoir having a toroid-like shape characterized by a toroidal axis and a toroidal plane; -
(b) inlet means to access said reservoir, said inlet means being intersected by the toroidal axis; and (c) outlet means from said reservoir; whereby said reservoir can be cleaned efficiently by forcing fluid through said reservoir between said inlet means and said outlet means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable infusion port for transferring a fluid transdermally between an external container and a site within a patient'"'"'s body comprising
(a) a reservoir having a quasi-toroidal shape characterized by a toroidal axis and a toroidal plane; -
(b) a penetrable elastomeric septum inlet to said reservoir; and (c) an outlet catheter from said reservoir, said outlet catheter being directed along a tangent to said reservoir to be led to the site in the patient'"'"'s body; whereby the reservoir can be cleaned efficiently by forcing fluid through said reservoir between said septum and said outlet catheter.
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9. A method for accessing a site in a patient'"'"'s body which comprises
(1) implanting an infusion port beneath the patient'"'"'s skin, said infusion port including (a) a reservoir to contain a fluid, said reservoir having a toroid-like shape characterized by a toroidal axis and a toroidal plane; -
(b) inlet means to access said reservoir; and (c) outlet means from said reservoir; (2) establishing connection between said outlet means and the site in the patient'"'"'s body; and (3) making transdermal connection between said reservoir and a fluid container external to the patient'"'"'s body. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for accessing a site in a patient'"'"'s body which comprises
(1) implanting an infusion port beneath the patient'"'"'s skin, said infusion port including (a) a reservoir to contain a fluid; -
(b) inlet means to access said reservoir; and (c) outlet means from said reservoir, said outlet means being directed along a tangent to said reservoir; (2) establishing connection between said outlet means and the site in the patient'"'"'s body; and (3) making transdermal connection between said reservoir and a fluid container external to the patient'"'"'s body. - View Dependent Claims (17)
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18. An implantable infusion port for transferring a fluid transdermally between an external container and a site within a patient'"'"'s body comprising
(a) a rigid reservoir to contain said fluid, said reservoir having a toroid-like shape characterized by a toroidal axis and a toroidal plane; -
(b) inlet means to access said reservoir; and (c) outlet means from said reservoir; whereby said reservoir can be cleaned efficiently by forcing fluid through said reservoir between said inlet means and said outlet means. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. An implantable infusion port for transferring a fluid transdermally between an external container and a site within a patient'"'"'s body comprising
(a) a rigid reservoir to contain said fluid; -
(b) a single inlet means to access said reservoir; and (c) outlet means from said reservoir to the site in the patient'"'"'s body, said outlet means being directed along a tangent to said reservoir; whereby said reservoir can be cleaned efficiently by forcing fluid through said reservoir between said inlet means and said outlet means. - View Dependent Claims (28, 29)
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Specification