Composite implantable biocompatible vascular access port device

• US 5,213,574 A
• Filed: 09/06/1991
• Issued: 05/25/1993
• Est. Priority Date: 09/06/1991
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: Device Labs Incorporated
• Inventors: Tucker, Elton M.
• Primary Examiner(s): Page, Thurman K.
• Assistant Examiner(s): AZPURU, CARLOS A
• Application Number:
  US07/755,690
• Time in Patent Office: 627 Days
• Field of Search: 424/423, 604/175, 604/891.1, 604/327, 604/328, 604/890.1, 604/892.1, 604/93, 604/181, 604/256, 128/DIG. 12, 128/899
• US Class Current: 604/288.02
• CPC Class Codes: A61L 29/02 Inorganic materials
• CPC Class Codes: A61L 29/04 Macromolecular materials
• CPC Class Codes: A61L 29/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61M 2039/0226 having means for protecting the interior of the access site from damage due to the insertion of a needle
• CPC Class Codes: A61M 2039/0229 having means for facilitating assembling, e.g. snap-fit housing or modular design
• CPC Class Codes: A61M 39/00 Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use for respiratory devices, e.g. tracheal tubes A61M16/00; artificial heart valves A61F2/24
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: C08L 81/06 Polysulfones; Polyethersulfones

Abstract

A composite implantable biocompatible vascular access port device for delivering a fluid medication to or withdrawing a fluid medication from the body. The device has a non-metallic housing defining an interior chamber with inlet and outlet openings, a self-sealing penetrable septum, a metallic chamber liner, and a metallic delivery conduit. The septum closes the inlet opening and provides a seal through which fluids may be injected into or withdrawn from the chamber. The metallic chamber liner underlies and seals against the septum and cooperates with it to isolate the injected fluid medication from the housing and from leakage into body tissue. The metallic delivery conduit communicates with the interior of the liner, and extends through the outlet opening to convey fluid medication to the exterior of the housing.

Claims

1. A surgically implantable device for delivering a fluid medication to a body, said device comprising:

housing means of a biocompatible non-metallic first material defining an interior chamber with communicating inlet and outlet openings;

a unitary cup-shaped element of a metallic second material compatible with said fluid medication and received in and lining the interior surface of said chamber;

self-sealing septum means closing said inlet opening and through which said fluid medication may be injected into said chamber;

said cup-shaped element cooperating in sealing engagement with said septum means to isolate the thus injected fluid medication from contact with said first material of said housing; and

conduit means communicating with said cup-shaped element and extending through said outlet opening to discharge fluid medication from said chamber to the exterior of said housing.

2. The device as claimed in claim 1, wherein said first material is plastic.

3. The device as claimed in claim 1, wherein said first material is polyethersulfone.

4. The device as claimed in claim 1, wherein said first material is elastomeric.

5. The device as claimed in claim 1, wherein said second material is stainless steel.

6. The device as claimed in claim 1, wherein said second material is titanium.

7. The device as claimed in claim 1, wherein said housing is molded around said cup-shaped element during fabrication.

8. The device as claimed in claim 1, wherein said housing comprises an upper housing portion and a lower housing portion, wherein said upper housing portion and said lower housing portion are assembled together around the cup-shaped element during fabrication.

9. A surgically implantable device for delivering a fluid medication to or withdrawing a body fluid from a body, said device comprising:

a biocompatible non-metallic housing defining an interior chamber and inlet and outlet openings communicating with said chamber;

a metallic unitary cup-shaped element compatible with said fluids and received in and lining the interior surface of said chamber;

a self-sealing penetrable septum closing said inlet opening and providing a means through which said fluids may be injected into or removed from said chamber;

said cup-shaped element cooperating in sealing engagement with said septum means to isolate said fluids from said housing; and

a metallic conduit communicating with the cup-shaped element, and extending through said outlet opening for conveying said fluids into and out of said housing.

10. The device as claimed in claim 9, wherein said non-metallic housing is made of plastic.

11. The device as claimed in claim 9, wherein said non-metallic housing is made of polyethersulfone.

12. The device as claimed in claim 9, wherein said non-metallic housing is made of an elastomeric material.

13. The device as claimed in claim 9, wherein said metallic cup-shaped element is made of stainless steel.

14. The device as claimed in claim 9, wherein said metallic cup-shaped element is made of titanium.

15. The device as claimed in claim 9, wherein said metallic conduit is made of stainless steel.

16. The device as claimed in claim 9, wherein said metallic conduit is made of titanium.

17. The device as claimed in claim 9, wherein said non-metallic housing is molded around said metallic cup-shaped element during fabrication.

18. The device as claimed in claim 9, wherein said non-metallic housing comprises an upper housing portion and a lower housing portion wherein said upper housing portion and said lower housing portion are assembled together around the metallic cup-shaped element during fabrication.