Peritoneal access catheter

• US 4,886,502 A
• Filed: 12/09/1986
• Issued: 12/12/1989
• Est. Priority Date: 12/09/1986
• Status: Expired due to Fees

• Current Assignee: Thermedics, Inc. (Thermo Fisher Scientific Incorporated)
• Original Assignee: Thermedics, Inc. (Thermo Fisher Scientific Incorporated)
• Inventors: Bowen, Mark A., Dasse, Kurt A., Poirier, Victor L., Daly, Benedict D. T.
• Primary Examiner(s): Freeh, William L.
• Application Number:
  US06/939,748
• Time in Patent Office: 1,099 Days
• Field of Search: 604/175, 128/DIG. 26
• US Class Current: 604/175
• CPC Class Codes: A61M 1/285 Catheters therefor
• CPC Class Codes: Y10S 128/26 Cannula supporters

Abstract

Disclosed is an improved peritoneal access system for providing repeated, long term access through the peritoneum, as for patients undergoing peritoneal dialysis. The system includes a catheter tube extending through an implantable percutaneous access device (PAD) formed of a cylindrical neck and a buttonlike annular skirt. A portion of the catheter tube external to the PAD has a bellows integrally formed therein permitting the tube to be bent and moved without restricting fluid flow or stressing the PAD. The internal portion of the catheter tube has a sharp right angle below the PAD to tunnel the tube in a subcutaneous plane to the peritoneal penetration site and a position-adjustable collar for anchoring/sealing the cathether tube near the upper surface of the peritoneum.

Claims

1. A peritoneal access system comprising:

a biocompatible percutaneous access device having a cylindrical neck portion for protrusion through the skin of a patient and an annular skirt portion for anchoring into the dermis/subcutaneous tissue interface said cylindrical neck portion having a textured surface to promote the ingrowth of the skin of the patient;

a catheter tube threaded through said neck and skirt portions, said neck portion dividing said catheter tube into an external catheter region and an internal catheter region, said external catheter region comprising a flexible bellows which can form a 90 degree angle adjacent said neck and providing means for absorbing shock when the external catheter is moved and said internal region of said catheter being bent approximately 90 degrees, with relation to said neck portion, adjacent said skirt portion to direct the catheter away from the percutaneous access device; and

a collar frictionally fit and slidably mounted directly on said internal region of said catheter so as to be adjustably positionable along the length of the internal region of said catheter during implantation into the peritoneum to be positioned in close approximation to the peritoneum regardless of the thickness of the patient'"'"'s abdominal wall thickness.

2. A peritoneal access system comprising:

a biocompatible percutaneous cylindrical neck for protrusion through the skin of a patient, said neck having a textured surface for encouraging ingrowth of skin of a patient;

a biocompatible percutaneous annular skirt adjacent to said neck for anchoring into the dermis/subcutaneous tissue interface;

a catheter tube threaded through said neck and said skirt, said neck and said skirt serving to divide said catheter tube into an external catheter region and an internal catheter region;

said external catheter region comprising a flexible bellows capable of forming a 90 degree angle adjacent said neck an providing means for absorbing shock when said external region of said catheter tube is moved; and

a collar frictionally fit and slidably mounted directly on said internal region of said catheter so as to be adjustably positionable along the length of the internal region of said catheter during implantation into the peritoneum to be positioned in close approximation to the peritoneum regardless of the thickness of the patient'"'"'s abdominal wall thickness.

3. The peritoneal access system of claim 2 wherein said internal catheter region has a 90 degree angle adjacent said skirt to direct the catheter tube away from the percutaneous skirt.

4. The peritoneal access system of claim 2 wherein said neck and said skirt are bonded together.

5. The peritoneal access system of claim 2 wherein said neck and said skirt are independently mounted on said catheter tube.

6. The peritoneal access system of claim 2 wherein said collar and said neck are substantially identical.

7. The peritoneal access system of claim 2 wherein said neck has a textured surface for promotion of tissue ingrowth.

8. The peritoneal access system of claim 7 wherein said textured surface is formed of two or more layers of bias wrapped filament.

9. The peritoneal system of claim 7 wherein said skirt is formed of wrapped filaments fused together.

10. A method for accessing a patient'"'"'s body comprising:

providing a biocompatible conduit capable of transferring a substance form a point external to the patient'"'"'s body to within the patient'"'"'s body, said conduit having a bellows to enable the bending of said conduit without trauma to the patient;

providing a means for anchoring said conduit to the patient'"'"'s body, said anchoring means having a textured surface to promote ingrowth of tissue from the patient'"'"'s body;

feeding said conduit through said anchoring means into the patient'"'"'s body until said bellows is adjacent said anchoring means;

feeding said conduit through a frictionally fit collar within the patient'"'"'s body said collar being capable of being adjustably positioned along the conduit;

bending a portion of said conduit which is inside of the patient'"'"'s body and adjacent to said anchoring means approximately 90 degrees; and

positioning the collar in close proximity to the patient'"'"'s peritoneum.

11. A method for implanting a peritone comprising:

providing a percutaneous access device with a texture surface through which extends a catheter tube, said percutaneous access device when implanted serving to separate said catheter tube into external and internal portions, and said catheter tube including a bellows section on the external portion of the catheter tube, a sharp angle on the internal portion of the tube and a peritoneal collar slidably mounted on the internal portion of the catheter tube;

making incisions to remove a plug of skin tissue, to allow for insertion of the percutaneous access device at the subdermal-subcutaneous tissue interface, and to extend the catheter tube through the peritoneum;

determining the thickness of the abdominal wall and sliding the peritoneal collar along the internal portion of the catherter tube so that the internal end of the peritoneal collar will be positioned in close proximity to the outer surface of the peritoneum;

implanting the percutaneous access device at the subdermal-subcutaneous tissue interface;

positioning said peritoneal collar near the outer surface of the peritoneum;

bending the external portion of the catheter tube at the bellows section and taping at least part of the remaining external catheter tube to the patient'"'"'s body.

12. A peritoneal access system comprising:

a biocompatible percutaneous cylindrical neck for protrusion through the skin of a patient, said neck having a textured surface formed of two or more layers of bias wrapped filament for encouraging ingrowth of skin of a patient;

a biocompatible percutaneous annular skirt adjacent to said neck for anchoring into the dermis/subcutaneous tissue interface;

a catheter tube threaded through said neck and said skirt, said neck and said skirt serving to divide said catheter tube into an external catheter region and an internal catheter region; and

said external catheter region comprising a flexible bellows capable of forming a 90 degree angle adjacent said neck an providing means for absorbing shock when said external region of said catheter tube is moved.

13. A peritoneal access system comprising:

a biocompatible percutaneous cylindrical neck for protrusion through the skin of a patient, said neck having a textured surface for encouraging ingrowth of skin of a patient;

a biocompatible percutaneous annular skirt formed of wrapped filaments fused together said skirt being adjacent to said neck for anchoring into the dermis/subcutaneous tissue interface;

a catheter tube threaded through said neck and said skirt, said neck and said skirt serving to divide said catheter tube into an external catheter region and an internal catheter region; and

said external catheter region comprising a flexible bellows capable of forming a 90 degree angle adjacent said neck an providing means for absorbing shock when said external region of said catheter tube is moved.