Implantable port septum
AssigneeBecton, Dickinson and Company
InventorFrancis E. Blinkhorn
Life of this patent
Estimating the term…
Abstract
A septum is provided for use with implantable ports used for repeated drug delivery infusions. The septum allows for a substantially higher (more than twice) number of punctures prior to leakage and failure. This is achieved by the use of two different Shore A durometer hardnesses for different sections of the septum, one of harder material than used in prior art septums for the main body of the septum, and a section of much softer Shore A duromater hardness adjacent the inner surface of the septum for greater sealing facility when a needle is withdrawn. In addition, the greater hardness of the main body allows for greater stability of the needle when in place in the septum.
Claims5
As septum for use in an implantable port device for repeated infusions of medication, characterized by
- (a) a substantially flat septum body;
- (b) said body having diametrically opposed faces forming a top surface and a bottom surface for said body;
- (c) an insert positioned in said bottom surface of said body;
- (d) said body being comprised of a substantially hard Shore A durometer implantable grade elastomer for stabilizing a needle inserted therein;
- and
- (e) said insert being comprised of a substantially soft Shore A durometer for resealing when a needle is inserted therethrough and withdrawn.
A septum for use in an implantable port device for repeated infusions of medication and the like, characterized by
- (a) a septum body;
- (b) said septum body comprised of two parts, a first part and a second part;
- (c) said first part of said body comprised of an elastomer of a substantially hard Shore A durometer;
- (d) said second part of said body comprised of an elastomer of a substantially soft Shore A durometer;
- (e) said first and second parts being laminated together to form said body;
- (f) said first part having a Shore A durometer of within the range of between about 65 and 80;
- and
- (g) said second part having a Shore A durometer of within the range of between about 10 and 35.
Dependencies are inferred from the claim text.