INTRAVENOUS CATHETER APPARATUS WITH CATHETER TELESCOPED INSIDE PUNCTURING CANNULA

• US 3,610,240 A
• Filed: 06/13/1967
• Issued: 10/05/1971
• Est. Priority Date: 06/13/1967
• Status: Expired due to Term

• Current Assignee: Baxter International Inc.
• Original Assignee: Andrew Harautuneian
• Inventors: Harautuneian, Andrew
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US04/645,715
• Time in Patent Office: 1,575 Days
• Field of Search: 128/214,214.2,214.4,221
• US Class Current: 604/162
• CPC Class Codes: A61M 25/0111 Aseptic insertion devices

Abstract

An intravenous catheter assembly in which a separable gripping hub integrates a rigid cannula within which a flexible catheter is telescopically disposed; the gripping hub including hinged jaws and a circumferential pressure band, one jaw including an abutment shoulder against which the proximate end of the cannula is abuttingly disposed during administration of the cannula for a catheter insertion procedure; the clamping means including a baseplate and separate clamp parts and a longitudinal and transverse clamp plate; means for gripping a rearwardly disposed flexible protective sheath; and a protector disposed within the protective sheath and protecting the cannula therein to prevent rupture of the catheter when the gripping hub is removed from the assembled parts.

Claims

1. Intravenous catheter apparatus comprising a rigid puncturing cannula having a forward sharpened end and a rear abutment end;

a flexible catheter substantially longer than said cannula and telescopically disposed within said cannula for free relative movement therein;

a removable hub circumposed about said cannula and including a separate, displaceable mechanical gripping means including an inner abutment portion engaging the abutment end of said cannula for facilitating administration of said cannula, said displaceable mechanical gripping means including at least a portion positioned adjacent said sharpened end of the cannula for circumferentially gripping said cannula to prevent relative longitudinal movement between said hub and cannula, said hub having hingedly opposed separable gripping surfaces displaceable from each other upon displacement of the mechanical gripping means and release of the circumferential gripping to permit removal of said hub from said cannula; and

a flexible sheath attached to said hub for protecting the catheter portion which extends rearwardly beyond said hub and said cannula

2. Intravenous cAtheter apparatus as set forth in claim 1 wherein the hub includes a pair of hinged jaws having gripping surfaces in opposed longitudinal grooves in the jaws.

3. Intravenous catheter apparatus as set forth in claim 2 wherein the hub is of polypropylene and has an integral polypropylene hinge between the jaws.

4. Intravenous catheter apparatus as set forth in claim 1 wherein the hub includes a sheath-receiving portion which has an opening therethrough for passage of the cannula;

said sheath-receiving portion having a bottom jaw of the hub rigidly attached thereto and having a top jaw hingedly attached thereto on a transverse, chordally disposed integral hinge portion; and

said top and bottom jaws having gripping surfaces in longitudinal opposed grooves in the jaws.

5. Intravenous catheter apparatus as set forth in claim 4 wherein the apparatus has a rigid band surrounding the jaws keeping them in gripping relationship with said cannula, said rigid band being removable from the jaws so the jaws can swing open for removal of the hub from the cannula.

6. Intravenous catheter apparatus as set forth in claim 1 wherein the flexible sheath is removable from the hub.

7. Intravenous catheter apparatus as set forth in claim 1 wherein the opposed gripping surfaces grip a needle hub attached to one end of the cannula.

8. Intravenous catheter apparatus comprising:

a tubular puncturing cannula;

a flexible catheter telescoped inside said cannula;

a removable hub grippingly engaging said cannula, said hub having opposed gripping surfaces which can separate from each other to release the catheter and cannula; and

a flexible sheath attached to said hub for protecting a catheter portion which extends beyond said hub, the hub including a base wall with upstanding arms on opposite sides of said cannula, a lid pivotally connected to these arms and adapted to swing longitudinally along the cannula toward said base wall to grip said cannula between said lid and said base wall; and

means for maintaining the lid and base wall in gripping relationship with said cannula.

9. Intravenous catheter apparatus as set forth in claim 8 wherein the lid and base wall grip a needle hub attached to one end of the cannula.

10. Intravenous catheter apparatus as set forth in claim 8 wherein the base wall has a second set of upstanding arms on opposite sides of said cannula and said means is a cam member removably connected to said second set of upstanding arms, said cam member forcing said lid to squeeze the cannula against said base wall.

11. Intravenous catheter apparatus as set forth in claim 8 wherein the flexible sheath is gripped between said lid and base wall.

12. Intravenous catheter apparatus as set forth in claim 11 wherein the flexible sheath is gripped on opposite sides of the cannula by a lug and cavity construction in the lid and base wall.

13. Intravenous catheter apparatus comprising:

a tubular puncturing cannula;

a flexible catheter telescoped inside said cannula;

a removable hub grippingly engaging said cannula, said hub having opposed gripping surfaces which can separate from each other to release the catheter and cannula; and

a flexible sheath attached to said hub for protecting a catheter portion which extends beyond said hub, the hub including a base wall, a lid pivotally connected to said base wall and adapted to swing transversely across said cannula and grip said cannula between the lid and the base wall, and releasable catch means on the hub to hold said lid in gripping relationship with said cannula.

14. Intravenous catheter apparatus as set forth in claim 13 wherein the lid and base wall grip a needle hub attached to one end of the cannula.

15. Intravenous catheter apparatus as set forth in claim 13 wherein the flexible sheath is gripped between said lid and said base wall.

16. Intravenous catheter apparatus as set forth in claim 15 wherein the flexible sheath is gripped on opposite sides of the cannula by a lug and cavity construction in the lid and base wall.

17. Intravenous catheter apparatus as set forth in claim 13 wherein the lid is pivotally connected to said base wall at an upstanding arm integral with the base wall.

18. Intravenous catheter apparatus as set forth in claim 1 wherein the catheter has a hollow adapter on an end of the catheter within said flexible sheath, and wherein the apparatus includes a removable closure for said hollow adapter.

19. Intravenous catheter apparatus as set forth in claim 1 wherein the catheter is substantially longer than said cannula and the cannula is slideable along said catheter after making a venipuncture, said apparatus including means within said flexible sleeve to protect the flexible catheter from being cut by a sharp-pointed end of the cannula surrounding the catheter after said hub has been removed from said cannula.

20. Intravenous catheter apparatus as set forth in claim 19 wherein the means includes a pair of hinged panels which clamp around the cannula to keep its pointed end from cutting into the catheter.

21. Intravenous catheter apparatus as set forth in claim 20 wherein the hinged panels have opposed mating grooves for encasing said cannula with a portion of the grooves extending beyond a pointed end of the cannula through which the catheter extends;

said panels being of polypropylene with an integral polypropylene hinge integrally connecting the two panels together at one side of said grooves, which panels have an entrance slot on an opposite side of said grooves whereby the catheter can be laterally inserted into the grooves; and

said panels have fastening means for holding them together to encase the cannula.