Implantable hemodialysis access port assembly

• US 5,944,688 A
• Filed: 07/20/1998
• Issued: 08/31/1999
• Est. Priority Date: 07/20/1998
• Status: Expired due to Fees

• Current Assignee: William A. Lois
• Original Assignee: William A. Lois
• Inventors: Lois, William A
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US09/119,247
• Time in Patent Office: 407 Days
• Field of Search: 604/93, 604/175, 604/4, 604/7, 604/8, 604/28-30, 604/43, 604/500, 604/523
• US Class Current: 604/288.01
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2205/6036 characterised by physical shape, e.g. array of activating switches
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

An implantable dialysis access port assembly for connection of a dialysis machine to a patient and detoxifying blood within the patient. The implantable dialysis access port assembly includes a first port including a first device for receiving a first needle of the dialysis machine, and a first connector and a second port including a second devices for receiving a second needle of the dialysis machine, and a second connector. A first catheter is connected to extend from the first connector and into a vein of the patient and a second catheter is connected to extend from the second connector and into the vein of the patient. The first and second ports are of different geometrical shapes and are readily detectable in position below the skin of the patient such that when the first needle is received by the first receiving device, the second needle is received by the second receiving device and the dialysis machine is turned on, blood is caused to be removed from the vein through the first catheter, the first port and the first needle for detoxification in the dialysis machine and returned to the vein through the second needle, the second port and the second catheter.

Claims

1. An implantable dialysis access port assembly for connection of a dialysis machine to a patient and detoxifying blood within the patient, said implantable dialysis access port assembly comprising:

a) a first port including a first means for receiving a first needle of the dialysis machine, and a first connector;

b) a second port including a second means for receiving a second needle of the dialysis machine, and a second connector;

c) a first catheter connected to extend from said first connector and into a vein of the patient;

d) a second catheter connected to extend from said second connector and into the vein of the patient, wherein said first and second ports are of different geometrical shapes and are readily detectable in position below the skin of the patient such that when the first needle is received by said first receiving means, the second needle is received by said second receiving means and the dialysis machine is turned on, blood is caused to be removed from the vein through said first catheter, said first port and the first needle for detoxification in the dialysis machine and returned to the vein through the second needle, said second port and said second catheter.

2. The implantable dialysis access port assembly as recited in claim 1, wherein said assembly is implanted in a position below subcutaneous tissue in a left subclavicular area of the patient'"'"'s body.

3. The implantable dialysis access port assembly as recited in claim 1, wherein the first and second needles each include a first and second tube extending therefrom for providing the blood removed from the vein through said first catheter and first port to the dialysis machine and returning the blood from the dialysis machine to the vein through said second port and second catheter.

4. The implantable dialysis access port assembly as recited in claim 3, wherein said first and second enlarged areas each have a thickness and said first and second ports each include a side wall extending therefrom and forming a reservoir therein for receiving said first and second receiving means, said side walls each having a height greater than the thickness of the first and second receiving means.

5. The implantable dialysis access port assembly as recited in claim 4, wherein said reservoir in both said first and second ports includes a base side, said base side in said reservoir of said first port being separated from said first receiving means received thereby forming a first pool therebetween and said base side in said reservoir of said second port being separated from said second receiving means forming a second pool therebetween.

6. The implantable dialysis access port assembly as recited in claim 5, wherein said first and second receiving means are both formed of a self sealing material.

7. The implantable dialysis access port assembly as recited in claim 6, wherein said self sealing material is rubberized silicone.

8. The implantable dialysis access port assembly as recited in claim 7, wherein said first and second side walls are each coated with a material able to prevent the first and second needles from piercing said respective side wall upon being received by said first and second receiving means.

9. The implantable dialysis access port assembly as recited in claim 8, wherein the first needle extends from the first tube and through said first receiving means into said first pool and the second needle extending from the second tube extends through said second receiving means and into said second pool.

10. The implantable dialysis access port assembly as recited in claim 1, wherein said first port further includes first means for securing said first port within the body of the patient and said second port further includes second means for securing said first port within the body of the patient.

11. The implantable dialysis access port assembly as recited in claim 2, wherein said first port further includes first means for securing said first port within the body of the patient and said second port further includes second means for securing said second port within the body of the patient.

12. The implantable dialysis access port assembly in claim 10, wherein said first and second means for securing each include a boarder area extending around a periphery of said respective one of said first and second ports and at least one recess extending through said border area.

13. The implantable dialysis access port assembly in claim 11, wherein said first and second means for securing each include a boarder area extending around a periphery of said respective one of said first and second ports and at least one recess extending through said border area.

14. The implantable dialysis access port assembly in claim 12, wherein said first and second ports are secured within the body of the patient by suchering each of said means for securing thereto.

15. The implantable dialysis access port assembly in claim 13, wherein said first and second ports are secured within the body of the patient by suchering each of said means for securing thereto.

16. The implantable dialysis connection assembly as recited in claim 1, wherein said first and second receiving means each have a surface area of a size able to provide a large number of insertion points thereby allowing an area time to heal after puncture with a needle.

17. The implantable dialysis access port assembly in claim 1, wherein said first port has an oval shape and said second port has a rectangular shape.

18. The implantable dialysis access port assembly in claim 1, wherein said first port has a rectangular shape and said second port has an oval shape.

19. The implantable dialysis access port assembly in claim 1, wherein said first and second catheters each have a length, the length of said first catheter being greater than the length of said second catheter.

20. The implantable dialysis access port assembly in claim 1, wherein said first catheter is inserted deeper into the vein than said second catheter.