EP0230747A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Implantable infusion port
Assignee: SURGICAL ENGINEERING ASSOCIATES Inc
•
Filing: 1986-12-15
•
Granted: —
•
Expires: 2006-12-15
Abstract
Abstract An implantable infusion port (28) for dispensing medication in the body of a patient comprises a septum (30) which is preferably integrally molded from a nontoxic, rubberized material and has an interior cavity (32) formed therein for receiving medication in the septum, and a catheter element (34) which extends from the cavity (32) to the exterior of the septum (30) for dispensing medication in the body of a patient. The septum (30) has a rounded dome-shaped configuration, and the infusion port is surgically implantable in the body of a patient so that it is positioned beneath the skin and subcutaneous tissue of the patient. After the infusion port has been implanted in the patient, medication can be introduced into the cavity by inserting a hypodermic needle (50) through the skin of the patient and through the side wall of the septum. The rounded dome-shaped configuration and the integrally molded construction of the septum minimize patient discomfort and provide an increased needle penetration area in the infusion port so that it does not become rapidly damaged by needle penetrations and it can be effectively used over a prolonged period of time without requiring replacement.
Inventors
- 👤 James R. Moden
- 👤 Michael D. Caldwell
- 👤 Robert D. Moden
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 09:20
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M2039/0211
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
128 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and needle shield means embedded in said side wall portion for guiding the tip of a needle inserted into said side wall portion so that it passes into said cavity.
Claim 2
Dependent Claim
128 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and needle shield means embedded in said side wall portion for guiding the tip of a needle inserted into said side wall portion so that it passes into said cavity.
Claim 3
Dependent Claim
32 words
In the infusion port of claim l, said shield means comprising a plurality of needle shields which extend outwardly from said cavity in said side wall portion for guiding said needle tip.
Claim 4
Dependent Claim
44 words
In the infusion port of claim 2, said septum being integrally molded from said self-sealing penetrable material, said guide means further comprising a top and bottom needle shields embedded in said top wall portion and said base portion, respectively, for guiding said needle tip.
Claim 5
Dependent Claim
140 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and impenetrable means within said port extending substantially upright relative to said base portion and operable for limiting the extent of penetration of said needle in said port in a direction substantially parallel to said base portion.
Claim 6
Dependent Claim
140 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and impenetrable means within said port extending substantially upright relative to said base portion and operable for limiting the extent of penetration of said needle in said port in a direction substantially parallel to said base portion.
Claim 7
Dependent Claim
18 words
The implantable infusion port of claim 4 wherein said impenetrable means comprises a partition extending across said cavity.
Claim 8
Dependent Claim
47 words
The implantable infusion port of claim 5 wherein said partition is imperforate and joined to said base portion and top wall portion to provide a plurality of chambers isolated from one another, and a corresponding plurality of catheter lumens, one leading respectively from each of said chambers.
Claim 9
Dependent Claim
45 words
The implantable infusion port of claim 5 wherein said port is of elongated form and said partition extends in the lengthwise direction thereof, the elongated exterior sides of said port providing extended areas for penetration by said needle of said port from opposite sides thereof.
Claim 10
Dependent Claim
45 words
The implantable infusion port of claim 6 wherein said port is of elongated form and said partition extends in the lengthwise direction thereof, the elongated exterior sides of said port providing extended areas for penetration by said needle of said port from opposite sides thereof.
Claim 11
Dependent Claim
161 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, and catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, said infusion port being of elongated form, said side wall portion defining two elongated, generally opposed side entry areas penetrable by the needle for communicating with the interior of said cavity, and relatively rigid impenetrable means extending toward said top wall portion from said base portion bounding the ends of each of said elongated side entry areas.
Claim 12
Dependent Claim
161 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, and catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, said infusion port being of elongated form, said side wall portion defining two elongated, generally opposed side entry areas penetrable by the needle for communicating with the interior of said cavity, and relatively rigid impenetrable means extending toward said top wall portion from said base portion bounding the ends of each of said elongated side entry areas.
Claim 13
Dependent Claim
27 words
l0. The implantable infusion port of claim 9 including a relatively rigid elongated longitudinally extending partition within said cavity extending substantially upright relative to said base portion.
Claim 14
Dependent Claim
164 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, guide means mounted in said septum for directing the tip of a needle inserted through said penetrable side wall portion into said cavity, and impenetrable means within said cavity extending substantially upright relative to said base portion and operable for limiting the extent of penetration of said needle tip in said port in a direction substantially parallel to said base portions.
Claim 15
Dependent Claim
164 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, guide means mounted in said septum for directing the tip of a needle inserted through said penetrable side wall portion into said cavity, and impenetrable means within said cavity extending substantially upright relative to said base portion and operable for limiting the extent of penetration of said needle tip in said port in a direction substantially parallel to said base portions.
Claim 16
Dependent Claim
218 words
A subcutaneously implantable infusion port for dispensing medication in the body of a patient in combination with a hypodermic injection needle for injecting medication into said infusion port, said infusion port comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by said needle for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, and catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, said hypodermic injection needle comprising connected tip and shank portions disposed approximately perpendicular to each other whereby when said infusion port is subcutaneously implanted in a patient, said needle is positionable so that said shank portion is substantially perpendicular to the body of said patient for facilitating handling of said needle during the insertion of said tip portion through the skin of said patient and through the penetrable side wall of said septum, and is thereafter rotatable about said tip portion to a position wherein said shank portion lies substantially parallel to and adjacent to the body of said patient.
Claim 17
Dependent Claim
218 words
A subcutaneously implantable infusion port for dispensing medication in the body of a patient in combination with a hypodermic injection needle for injecting medication into said infusion port, said infusion port comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by said needle for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, and catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, said hypodermic injection needle comprising connected tip and shank portions disposed approximately perpendicular to each other whereby when said infusion port is subcutaneously implanted in a patient, said needle is positionable so that said shank portion is substantially perpendicular to the body of said patient for facilitating handling of said needle during the insertion of said tip portion through the skin of said patient and through the penetrable side wall of said septum, and is thereafter rotatable about said tip portion to a position wherein said shank portion lies substantially parallel to and adjacent to the body of said patient.
Claim 18
Dependent Claim
143 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and a partition in said septum separating said cavity into discrete first and second chambers, said catheter means including first and second catheter lumens which provide communication between said first and second chambers, respectively, and the exterior of said septum.
Claim 19
Dependent Claim
143 words
An implantable infusion port for dispensing medication in the body of a patient comprising a septum having a base portion, a side wall portion and a top wall portion which cooperate to define an enclosed cavity in said septum, at least a portion of said side wall portion being made of a material which is penetrable by a hypodermic needle or the like for introducing medication into said cavity but which is substantially self-sealing upon removal of said needle therefrom, catheter means providing communication between said cavity and the exterior of said septum for dispensing said medication in the body of said patient, and a partition in said septum separating said cavity into discrete first and second chambers, said catheter means including first and second catheter lumens which provide communication between said first and second chambers, respectively, and the exterior of said septum.
Claim 20
Dependent Claim
13 words
The infusion port of claim 4 further comprising top and bottom needle shields.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.