Implantable access devices

• US 5,792,123 A
• Filed: 07/24/1997
• Issued: 08/11/1998
• Est. Priority Date: 03/01/1990
• Status: Expired due to Fees

• Current Assignee: Michigan Transtech Corporation
• Original Assignee: Michigan Transtech Corporation
• Inventors: Ensminger, William D.
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US08/899,549
• Time in Patent Office: 383 Days
• Field of Search: 604/272, 604/274, 604/264, 604/187, 604/93
• US Class Current: 604/272
• CPC Class Codes: A61M 1/3653 Interfaces between patient blood circulation and extra-corporal blood circuit
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 2039/0214 some or all chambers sharing a single septum
• CPC Class Codes: A61M 2039/062 used with a catheter
• CPC Class Codes: A61M 2039/0633 the seal being a passive seal made of a resilient material with or without an opening
• CPC Class Codes: A61M 2039/064 Slit-valve
• CPC Class Codes: A61M 2039/0653 Perforated disc
• CPC Class Codes: A61M 2039/0666 Flap-valve
• CPC Class Codes: A61M 2039/0673 comprising means actively pressing on the device passing through the seal, e.g. inflatable seals, diaphragms, clamps
• CPC Class Codes: A61M 2039/0686 comprising more than one seal
• 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: A61M 39/0606 without means for adjusting the seal opening or pressure A61M39/0693 takes precedence
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16
• CPC Class Codes: A61M 5/3286 Needle tip design, e.g. for improved penetration
• CPC Class Codes: A61M 5/3291 Shafts with additional lateral openings

Abstract

A catheter adapted for self-introduction into the body of a patient. The catheter includes a body having ends and a passageway therethrough. Mounted to one end is a tip made of a hard material and defining a sharp point. An aperture is formed in the catheter at a location which will be within the body of the patient when the catheter has being introduced into the patient.

Claims

1. A self-introducing catheter for self-introduction into a patient comprising:

an elongated tube-like flexible body formed of resilient material having sufficient rigidity allowing said catheter to be self-introduced into a patient without aid from a rigid introducing instrument, said body having a passageway defined therethrough, said body having a first end for insertion into said patient and a second end for remaining exteriorly positioned of said patient when said first end has been inserted thereinto;

a tip mounted to and supported by said first end of said body, said tip being formed of a hard material and exhibiting a substantially conical shape terminating in a outwardly sharp point, said sharp point allowing said tip and said body of said catheter to pierce and to enter said patient; and

portions defining an aperture in said catheter, said aperture being defined in said catheter at a location such that said aperture is positioned internally of said patient when said catheter is inserted in said patient, said aperture permitting the flow of fluids into and out of said catheter.

2. A self-introducing catheter according to claim 1 wherein said tube-like body is rubber.

3. A self-introducing catheter according to claim 1 wherein said tip is metal.

4. A self-introducing catheter according to claim 1 wherein said aperture is defined in said tube-like body.

5. A self-introducing catheter according to claim 1 wherein said aperture is oval in shape.

6. A self-introducing catheter according to claim 1 wherein said aperture is elliptical in shape.

7. A self-introducing catheter according to claim 1 wherein said aperture is defined in said tip.

8. A self-introducing catheter according to claim 1 wherein said aperture is circular in shape.

9. A self-introducing catheter according to claim 1 wherein said aperture is triangular in shape.

10. A self-introducing catheter according to claim 9 wherein said aperture is defined in said tip and oriented to generally correspond with said conical shape of said tip.

11. A self-introducing catheter according to claim 1 wherein said catheter includes two apertures defined therein at a position which will be internal of said patient when said catheter is inserted into said patient and which will permit the flow of fluids into and out of said catheter.

12. A self-introducing catheter according to claim 11 wherein said two apertures are defined in said tip.

13. A self-introducing catheter according to claim 12 wherein said two apertures are diametrically opposed to one another.

14. A self-introducing catheter according to claim 11 wherein said two apertures are diametrically opposed to one another.

15. A catheter for self-introduction into a patient, said catheter comprising:

an elongated generally tubular flexible body having sufficient rigidity allowing said catheter to be self-introduced into a patient without aid from a rigid introducing instrument, said body having first and second ends and said body defining a passageway therethrough communicating said first end with said second end;

a tip mounted to first end of said body and supported thereby, said tip being constructed of a hard material and forming a point in the direction away from said first end, said point being adapted for penetration into said patient; and

portions of said catheter defining a first aperture in said catheter and in communication with said passageway, said first aperture being located generally adjacent to said first end of said catheter so as to penetrate into said patient with said first end.

16. A catheter for self-introduction into a patient according to claim 15 wherein said tip is metallic and said body is non-metallic.

17. A catheter for self-introduction into a patient according to claim 15 wherein said aperture is formed in said tip.

18. A catheter for self-introduction into a patient according to claim 15 wherein said aperture is formed in said body.

19. A catheter for self-introduction into a patient according to claim 15 wherein said body is flexible and said tip is rigid.

20. A catheter for self-introduction into a patient according to claim 15 wherein said tip includes a generally cylindrical first portion received within said first end of said body, said tip also including a generally conical second portion located outward of said body and in which said point is formed, a shoulder formed between said first and second portions and abutting said first end of said body.

21. A catheter for self-introduction into a patient according to claim 20 wherein said aperture is formed in said tip and said tip is generally hollow.