DEVICE FOR INTRAOSSEOUS INJECTION OF LIQUID SUBSTANCES

• US 3,750,667 A
• Filed: 01/31/1972
• Issued: 08/07/1973
• Est. Priority Date: 01/31/1972
• Status: Expired due to Term

• Current Assignee: Nikolai Fedorovich Pshenichny, Valentin Dmitrievich Maximov
• Original Assignee: Nikolai Fedorovich Pshenichny, Valentin Dmitrievich Maximov
• Inventors: Pshenichny, Nikolai Fedorovich, Maximov, Valentin Dmitrievich
• Primary Examiner(s): Trapp, Lawrence W.
• Application Number:
  US05/221,926
• Time in Patent Office: 554 Days
• Field of Search: 128/215,2B,221,347
• US Class Current: 604/117
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections

Abstract

A device for intraosseous injection of liquid substances, wherein the outside tube having a male thread on its end introducible onto osseous tissue and a head at its opposite end, is movably fitted onto the hollow inside tube which has a pointed tip at its end introducible into osseous tissue, oper-end injection holes being provided in a close proximity to said pointed tip. Besides, the outside tube and the tip itself have on their sides facing each other claws or jags directed towards one another and adapted, when the device is being screwed into osseous tissue, to get in engagement with one another so as to close said injection holes and thus prevent them from being clogged with osseous tissue.

Claims

1. A device for intraosseous injection of liquid substances, comprising:

an outside tube made hollow and having two ends of which one end is adapted to be introduced into osseous tissue, while the other end is opposite to the former one;

said end introducible into osseous tissue having a male thread, terminating in claws and said end opposite to the former one, carrying a head;

an inside tube capable of moving within said outside tube, made likewise hollow and having two ends, of which one end is to be introduced into osseous tissue, while the other end is opposite to the former one;

said end introducible into osseous tissue having a pointed tip which also terminates in claws that are similar to and directed towards said claws of said outside tube;

holes formed in said inside tube proximate to said end introducible into osseous tissue so as to provide passageways for flow of said liquid substances from the interior of said inside tube, said claws of said outside and said inside tubes being adapted, when the device disclosed herein is being screwed into osseous tissue, to be engaged with one another to close said holes, thereby preventing them from being clogged with osseous tissue; and

a cannula provided at said opposite end of said inside tube.

2. A device as claimed in claim 1, wherein said head of said outside tube incorporates a gland seal located on the side facing said inside tube and adapted to prevent back flow of the liquid substances being injected.

3. A device as claimed in claim 1, wherein mounted on said outside tube is a movable restrictor adapted to control the depth of introduction of the herein disclosed device into osseous tissue.

4. A device as claimed in claim 1, wherein the external surface of said head of mentioned outside tube and the external surface of said cannula of mentioned inside tube are adapted to be simultaneously screwed in or out by using the same key.