Method and apparatus for intravenous access

• US 3,991,756 A
• Filed: 08/18/1975
• Issued: 11/16/1976
• Est. Priority Date: 08/18/1975
• Status: Expired due to Term

• Current Assignee: Donald Synder
• Original Assignee: Donald Synder
• Inventors: Synder, Donald
• Primary Examiner(s): Pellergrino, Stephen C.
• Application Number:
  US05/605,335
• Time in Patent Office: 456 Days
• Field of Search: 128/214 R, 128/348, 128/334 C, 128/214.4, 128/347, 128/215, 128/221, 128/260, 128/DIG. 16
• US Class Current: 604/513
• CPC Class Codes: A61M 2039/0258 for vascular access, e.g. blood stream access
• CPC Class Codes: A61M 2039/0282 with implanted tubes connected to the port
• 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

Repeated single needle access to the vascular system is accomplished without percutaneous needling of the skin. A cannula is surgically implanted adjacent to a selected artery or vein and interfaces with same along a longitudinal wall. One end of the cannula exits from the skin. Needle means including an indexing scheme allows serial puncturing of the interface wall to thereby provide the vascular access. When not in use the cannula is plugged and the exposed end thereof is covered preferably by an elastic layer.

Claims

1. A single needle access portal to provide intravenous communication comprising,

a cannula:

means for attaching said cannula attached to a selected artery or vein with one portion of said cannula exiting from the skin,

needle means having a tip and adapted for insertion in said cannula, and

means to selectively locate said needle tip along the interior of said cannula whereby driving said needle tip through said cannula and into the selected vein or artery achieves percutaneous access to the vascular system without repeated percutaneous needling of the skin.

2. The portal of claim 1, a catheter adapted for insertion in said needle means to be guided thereby into the selected and punctured artery or vein.

3. The portal of claim 1, said cannula being attached to the selected artery or vein along an interface wall and defined by a silastic tube having a dacron cover.

4. The portal of claim 3, said cannula having an aperture scheme along the interface wall, said aperture scheme being operatively placed with respect to said needle tip locating means to allow serial percutaneous access through the interface wall and into the vascular system.

5. The portal of claim 4, said needle tip locating means including a longitudinal slot along the internal periphery of said cannula, and a plurality of annular grooves formed along the internal periphery of said cannula and positioned transverse to said slot with a respective one of said grooves intercepting an associated aperture of said aperture scheme.

6. The portal of claim 1, said cannula being attached to the selected artery or vein by means of an arterial bypass.

7. The portal of claim 5, a flexible trocar substantially complimentary to the interior of said cannula and designed to detachably fit thereinto.

8. The portal of claim 7, that portion of said cannula exiting from the skin defined by a cannula hub having a dacronfelt cuff with which it is cemented to the skin.

9. The portal of claim 8, said trocar defined by nublike excresences on its surface complimentary with and designed to fit into the aperture scheme through said cannula.

10. The portal of claim 8, said trocar including a cap adapted to detachably fit into and close said cannula end.

11. The portal of claim 10, an elastic cover detachably affixed about said cannula end to protect the same from being dislodged from the skin.

12. The portal of claim 11, an elastic band about the patient'"'"'s extremity and positioned adjacent said cannula end, said band including means to detachably receive said elastic cover.

13. A method of providing percutaneous access to the vascular system without percutaneous needling of the skin comprising,

attaching a cannula along a selected artery or vein so that the cannula interfaces the selected artery or vein along a longitudinal portion with an end of said cannula exiting the skin,

inserting a needle having a projecting tip through said end of the cannula into the interior thereof,

indexing selectively the needle tip with respect to said longitudinal interface, and

driving the tip of said needle through said longitudinal interface to thereby provide access to the vascular system.

14. The method of claim 13, providing said needle with a longitudinal slot, and inserting a catheter into said needle whereby the same guides said catheter into the selected and punctured artery or vein.

15. The method of claim 14, withdrawing said needle from the cannula and while so doing allowing said catheter to pass through said longitudinal slot and remain coupled to the vascular system.

16. The method of claim 13, providing a plurality of apertures disposed serially along said longitudinal interface and through said cannula.

17. The method of claim 16, said selective indexing step being accomplished by providing a longitudinal slot on the interior periphery of said cannula and forming a plurality of spaced annular grooves on said cannula interior periphery with each of said grooves associated with one of said plurality of apertures, each of said annular grooves adapted to guide said needle tip into its associated one of said plurality of apertures when said needle is rotated about its longitudinal axis.

18. The method of claim 13, jacketing said cannula in a DACRON cover with said attaching step being performed by suturing said cover on the subcutaneous tissue of the selected artery or vein.

19. The method of claim 18, said attaching step being accomplished by providing a bypass on the selected artery or vein and suturing said cover to said vascular bypass.

20. The method of claim 13, glueing said cannula end to the skin tissue adjacent thereto.

21. The method of claim 16, withdrawing said catheter from said cannula and inserting a trocar into said cannula to substantially seal the same.

22. The method of claim 21, providing a cap on said trocar to cover and close said cannula end, and covering the now capped end of said cannula by means of an elastic layer.

23. The method of claim 22, said covering step being performed by attaching said elastic layer to the skin adjacent and surrounding said end of said cannula.