Subcutaneous port catheter system and associated method

• US 20020107475A1
• Filed: 12/04/2001
• Published: 08/08/2002
• Est. Priority Date: 01/06/1998
• Status: Active Grant

• Current Assignee: Maginot Catheter Technologies, Inc.
• Original Assignee: Maginot Catheter Technologies, Inc.
• Inventors: Maginot, Thomas J.
• Granted Patent: US 7,008,412 B2
• Time in Patent Office: Days
• US Class Current: 604/48
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/0293 Catheter, guide wire or the like with means for holding, centering, anchoring or frictionally engaging the device within an artificial lumen, e.g. tube
• CPC Class Codes: A61M 2039/0264 with multiple inlets or multiple outlets
• CPC Class Codes: A61M 2039/0273 for introducing catheters into the body
• CPC Class Codes: A61M 2039/0288 protectors, caps or covers therefor
• CPC Class Codes: A61M 25/0028 characterized by features relating to at least one lumen located at the proximal part of the catheter, e.g. alterations in lumen shape or valves catheter hubs A61M25/0097
• CPC Class Codes: A61M 25/0029 characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053

Abstract

A subcutaneous port catheter system includes a reservoir defining a chamber therein. The catheter system also includes a guide catheter attached to the reservoir. The guide catheter has a guide lumen and a distal guide orifice. The catheter system further includes an inner catheter attached to the reservoir. The inner catheter is positioned within the guide lumen and extends through the distal guide orifice. A method of advancing fluid into a blood vessel of a body of a patient is also disclosed.

Claims

1. A subcutaneous port catheter system, comprising:

a reservoir defining a chamber therein;

a guide catheter attached to said reservoir, said guide catheter having a guide lumen and a distal guide orifice; and

an inner catheter attached to said reservoir, said inner catheter being positioned within said guide lumen and extending through said distal guide orifice.

2. The subcutaneous port catheter system of claim 1, wherein said reservoir includes a septum configured to be traversed by a needle.

3. The subcutaneous port catheter system of claim 1, wherein said guide catheter includes a valve positioned adjacent to said distal guide orifice.

4. The subcutaneous port catheter system of claim 1, wherein:

said reservoir includes an attachment cannula which is in fluid communication with said chamber,

said attachment cannula includes an increased diameter portion and a reduced diameter portion,

said guide catheter is attached to said increased diameter portion, and

said inner catheter is attached to said reduced diameter portion.

5. The subcutaneous port catheter system of claim 4, wherein:

each of said increased diameter portion and said reduced diameter portion possesses a ribbed outer surface,

said guide catheter is removably attached to said ribbed outer surface of said increased diameter portion in a friction fit manner, and

said inner catheter is removably attached to said ribbed outer surface of said reduced diameter portion in a friction fit manner.

6. The subcutaneous port catheter system of claim 1, wherein:

said reservoir is fluid communication with said inner catheter.

7. A subcutaneous port catheter system, comprising:

a reservoir having a septum and defining a chamber;

an inner catheter which is in fluid communication with said chamber; and

a guide catheter having a guide lumen, said inner catheter being at least partially positioned within said guide lumen.

8. The subcutaneous port catheter system of claim 7, wherein:

said guide catheter has a distal guide orifice, and

said inner catheter extends through said distal guide orifice.

9. The subcutaneous port catheter system of claim 8,

said inner catheter has a distal opening, and

said distal opening is positioned outside of said guide catheter.

10. The subcutaneous port catheter system of claim 7, wherein said guide catheter includes a valve positioned adjacent to said distal guide orifice.

11. The subcutaneous port catheter system of claim 7, wherein:

said reservoir includes an attachment cannula which is in fluid communication with said chamber,

said attachment cannula includes an increased diameter portion and a reduced diameter portion,

said guide catheter is attached to said increased diameter portion, and

said inner catheter is attached to said reduced diameter portion.

12. The subcutaneous port catheter system of claim 11, wherein:

each of said increased diameter portion and said reduced diameter portion possesses a ribbed outer surface,

said guide catheter is removably attached to said ribbed outer surface of said increased diameter portion in a friction fit manner, and

said inner catheter is removably attached to said ribbed outer surface of said reduced diameter portion in a friction fit manner.

13. The subcutaneous port catheter system of claim 7, wherein said guide catheter is attached to said reservoir.

15. The method of claim 14, wherein:

said inner catheter has a distal opening, and

said positioning step includes the step of positioning said distal opening of said inner catheter outside of said guide catheter.

16. The method of claim 15, wherein said advancing step includes the step of advancing fluid into said blood vessel through said port catheter system while said distal opening of said inner catheter is positioned outside of said guide catheter.

18. The method of claim 17, further comprising the steps of:

removing said original inner catheter from said guide lumen after said infusing step;

positioning a replacement inner catheter at least partially within said guide catheter after said removing step; and

infusing fluid into or withdrawing fluid from said blood vessel through said needle, said reservoir, and said replacement inner catheter after said replacement inner catheter positioning step.

19. The method of claim 17, wherein said implanting step further includes the step of implanting said reservoir beneath said skin.

20. The method of claim 17, wherein said infusing or withdrawing step includes the step of infusing fluid into or withdrawing fluid from said blood vessel through said needle, said reservoir, and said original inner catheter while a distal opening of said original inner catheter is positioned outside of said guide catheter.

14. A method of advancing fluid into a blood vessel of a body of a patient with a port catheter system which includes (i) a reservoir, (ii) a guide catheter, and (iii) an inner catheter positioned at least partially within said guide catheter, comprising the steps of:

implanting said port catheter system beneath the skin of said body so that said guide catheter and said inner catheter are at least partially positioned within said blood vessel;

positioning a distal end portion of a needle within said reservoir after said implanting step; and

advancing fluid into said blood vessel through said port catheter system.

17. A method of advancing fluid into a blood vessel of a body of a patient, comprising the steps of:

implanting a port catheter system beneath the skin of said body so that a guide catheter and an original inner catheter of said port catheter system are both at least partially positioned within said blood vessel, said original inner catheter being located at least partially within said guide catheter;

advancing a needle through a septum of a reservoir of said port catheter system after said implanting step so as to position a distal end of said needle within a chamber of said reservoir; and

infusing fluid into or withdrawing fluid from said blood vessel through said needle, said reservoir, and said original inner catheter after said advancing step.