Implantable vascular access device with ceramic needle guard insert
First Claim
1. An implantable access port, comprisinga plastic housing member comprising a first side wall portion of at least one fluid chamber and an exit port in the side wall in fluid communication with said fluid chamber,a permeable septum member attached to said housing and defining a top of said fluid chamber, andan insert member comprising a concaved-shape having a base portion covering a bottom of said fluid chamber, an edge radius extending generally outwardly from said base portion generally towards said permeable septum member, and a second side wall portion of said fluid chamber extending from said edge radius only to a point at or below said exit port of said fluid chamber, wherein said insert member comprises a material selected from the group consisting of stainless steel, titanium or ceramic, and wherein a volume of said at least one fluid chamber is defined by said permeable septum, said first side wall portion of said plastic housing member, said second side wall portion of said insert member and said base portion of said insert member.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides an improved vascular access port comprising a port base with a metallic dish insert molded (or bonded) into the bottom of the reservoir. In one embodiment, a single reservoir is provided. In another embodiment, plural reservoirs are provided. The metallic bottom of the reservoir provides a hard surface that will resist abrasion and puncture by the access needles used to infuse medication or withdraw blood. Additionally, the single and dual ports can include exit ports that are intended to better anatomically fit into the subcutaneous areas around muscle tissue.
113 Citations
18 Claims
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1. An implantable access port, comprising
a plastic housing member comprising a first side wall portion of at least one fluid chamber and an exit port in the side wall in fluid communication with said fluid chamber, a permeable septum member attached to said housing and defining a top of said fluid chamber, and an insert member comprising a concaved-shape having a base portion covering a bottom of said fluid chamber, an edge radius extending generally outwardly from said base portion generally towards said permeable septum member, and a second side wall portion of said fluid chamber extending from said edge radius only to a point at or below said exit port of said fluid chamber, wherein said insert member comprises a material selected from the group consisting of stainless steel, titanium or ceramic, and wherein a volume of said at least one fluid chamber is defined by said permeable septum, said first side wall portion of said plastic housing member, said second side wall portion of said insert member and said base portion of said insert member.
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8. An implantable access port, comprising
a plastic housing member comprising a first side wall portion of at least one fluid chamber and an exit port in the side wall in fluid communication with said fluid chamber, a permeable septum member defining a top of said fluid chamber; -
at least one ring circumscribing a top of said housing member above said permeable septum, said at least one ring configured to be secured to said plastic housing member and comprising flange members having an upper surface which tapers inwardly towards said permeable septum such that at least one apex of said tapered flange members is disposed at or below said permeable septum, said flange members configured to urge a needle toward said permeable septum, said at least one ring further configured to secure said permeable septum to said port; and an insert member comprising a concaved-shape having a base portion covering a bottom of said fluid chamber, an edge radius extending generally outwardly from said base portion generally towards said permeable septum member, and a second side wall portion of said fluid chamber extending from said edge radius only to a point at or below said exit port of said fluid chamber, wherein said insert member comprises a material selected from the group consisting of stainless steel, titanium or ceramic, and wherein a volume of said at least one fluid chamber is defined by said permeable septum, said first side wall portion of said plastic housing member, said second side wall portion of said insert member and said base portion of said insert member. - View Dependent Claims (9, 10, 11, 12)
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13. An implantable access port, comprising
a plastic housing member comprising a first side wall portion of at least one fluid chamber and an exit port in the side wall in fluid communication with said fluid chamber, a permeable septum member attached to said plastic housing member and defining a top of said fluid chamber; -
at least one ring circumscribing a top of said housing member above said permeable septum, said at least one ring configured to be secured to said plastic housing member and to comprising flange members having an upper surface which tapers inwardly towards said permeable septum such that at least one apex of said tapered flange members is disposed at or below said permeable septum, said flange members configured urge a needle toward said permeable septum, said at least one ring further configured to secure said permeable septum to said port and to include a material selected from the group consisting of metal or ceramic material; and an insert member defining a bottom and a second side wall portion of said fluid chamber, wherein said insert member comprises a material selected from the group consisting of stainless steel, titanium or ceramic, and wherein a volume of said at least one fluid chamber is defined by said permeable septum, said first side wall portion of said plastic housing member, said second side wall portion of said insert member and said base portion of said insert member. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification