Device for the controlled injection of a programmable quantity of liquid

• US 5,938,638 A
• Filed: 08/29/1997
• Issued: 08/17/1999
• Est. Priority Date: 03/06/1995
• Status: Expired due to Fees

• Current Assignee: Alessandro Bonetti, Roberto Passariello
• Original Assignee: Alessandro Bonetti, Roberto Passariello
• Inventors: Passariello, Roberto, Bonetti, Alessandro
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US08/894,897
• Time in Patent Office: 718 Days
• Field of Search: 604/131, 604/132, 604/133, 604/151, 604/152, 604/65-67, 604/153, 604/154, 604/246, 604/254
• US Class Current: 604/131
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: F04C 2/3442 the surfaces of the inner and outer member, forming the working space, being surfaces of revolution

Abstract

The object of the invention is a device (1) for the controlled injection of a programmable quantity of liquid, including means (4) of connection for the container of liquid to be injected, an expulsion chamber (9) for the liquid, equipped with a rotating pump (12, 13, 14) for pumping the liquid from the container and sending it to the usage unit, and means of discharging (16) the liquid, said device (1) being made of a rigid material (FIG. 3).

Claims

1. An apparatus for controlled injection in diagnostic and therapeutic medical procedures of a programmable quantity of liquid, the apparatus comprising a connection device in communication with a container of the liquid to be injected, a liquid expulsion chamber in communication with the connection device, the liquid expulsion chamber comprising a rotating pump for aspirating the liquid from the container and sending the liquid to a usage unit, and means for evacuating the liquid, the connection device comprising a snap-on rotating mechanism for opening and closing a passage of air and liquid.

2. The apparatus of claim 1 wherein the liquid expulsion chamber comprises a body having two identical symmetrical parts.

3. The apparatus of claim 1 wherein the rotating pump comprises a rolling sphere having a diameter slightly less than that of the chamber and a slightly eccentric axis of rotation, equipped with!, and at least one movable paddle, said sphere and said paddle being associated with resistance means for high pressure.

4. The apparatus of claim 3 wherein the at least one paddle is loosely arranged in an opening in the rolling sphere.

5. The apparatus of claim 1, further comprising a reservoir for the liquid disposed between the connection device and the liquid expulsion chamber.

6. The apparatus of claim 5 wherein the reservoir comprises a safety system for opening and closing the passage of air and/or liquid, the safety system comprising a floating ball in a tube.

7. The apparatus of claim 1, further comprising means for hermetic sealing disposed between the connection device and the liquid expulsion chamber.

8. The apparatus of claim 1 wherein the means of evacuating the liquid comprises means for eliminating air bubbles.

9. The apparatus of claim 8 wherein the means for eliminating air bubbles comprises a dome including a floating sphere therein, the dome defining an opening for liquid overflow and an air release opening.

10. The apparatus of claim 1, further comprising safety and control systems to prevent programming the injection without having input the date relative to quantity of liquid in the container, to prevent injection of quantities of liquid exceeding that programmed, and to prevent operation of the rotating pump when empty.

11. The apparatus of claim 10 wherein the control system comprises an ultrasound control system.

12. An apparatus for controlled injection in diagnostic and therapeutic medical procedures of a programmable quantity of liquid, the apparatus comprising a connection device in communication with a container of the liquid to be injected, a liquid expulsion chamber in communication with the connection device, the liquid expulsion chamber comprising a rotating pump for aspirating the liquid from the container and sending the liquid to a usage unit, means for evacuating the liquid and means for hermetic sealing disposed between the connection device and the liquid expulsion chamber.

13. The apparatus of claim 12 wherein the liquid expulsion chamber comprises a body having two identical symmetrical parts.

14. The apparatus of claim 12 wherein the rotating pump comprises a rolling sphere having a diameter slightly less than that of the chamber and a slightly eccentric axis of rotation, and at least one movable paddle, said sphere and said paddle being associated with resistance means for high pressure.

15. The apparatus of claim 14 wherein the at least one paddle is loosely arranged in an opening in the rolling sphere.

16. The apparatus of claim 12, further comprising a reservoir for the liquid disposed between the connection device and the liquid expulsion chamber.

17. The apparatus of claim 16 wherein the reservoir comprises a safety system for opening and closing a passage of air and/or liquid, the safety system comprising a floating ball in a tube.

18. The apparatus of claim 12 wherein the connection device comprises a snap-on rotating mechanism for opening and closing the passage of air and liquid.

19. The apparatus of claim 12 wherein the means of evacuating the liquid comprises means for eliminating air bubbles.

20. The apparatus of claim 19 wherein the means for eliminating air bubbles comprises a dome including a floating sphere therein, the dome defining an opening for liquid overflow and an air release opening.

21. The apparatus of claim 12, further comprising safety and control systems operable to prevent programming the injection without having input the date relative to quantity of liquid in the container, to prevent injection of quantities of liquid exceeding that programmed, and to prevent operation of the rotating pump when empty.

22. The apparatus of claim 21 wherein the control system comprises an ultrasound control system.

23. An apparatus for controlled injection in diagnostic and therapeutic medical procedures of a programmable quantity of liquid, the apparatus comprising a connection device in communication with a container of the liquid to be injected, a liquid expulsion chamber in communication with the connection device, the liquid expulsion chamber comprising a rotating pump for aspirating the liquid from the container and sending the liquid to a usage unit, means for evacuating the liquid and safety and control systems operable to prevent programming the injection without having input the date relative to quantity of liquid in the container, to prevent injection of quantities of liquid exceeding that programmed, and to prevent operation of the rotating pump when empty.

24. The apparatus of claim 23 wherein the liquid expulsion chamber comprises a body having two identical symmetrical parts.

25. The apparatus of claim 23 wherein the rotating pump comprises a rolling sphere having a diameter slightly less than that of the chamber and a slightly eccentric axis of rotation, and at least one movable paddle, said sphere and said paddle being associated with resistance means for high pressure.

26. The apparatus of claim 25 wherein the at least one paddle is loosely arranged in an opening in the rolling sphere.

27. The apparatus of claim 23, further comprising a reservoir for the liquid disposed between the connection device and the liquid expulsion chamber.

28. The apparatus of claim 27 wherein the reservoir comprises a safety system for opening and closing a passage of air and/or liquid, the safety system comprising a floating ball in a tube.

29. The apparatus of claim 23 wherein the connection device comprises a snap-on rotating mechanism for opening and closing the passage of air and liquid.

30. The apparatus of claim 23 wherein the means of evacuating the liquid comprises means for eliminating air bubbles.

31. The apparatus of claim 30 wherein the means for eliminating air bubbles comprises a dome including a floating sphere therein, the dome defining an opening for liquid overflow and an air release opening.

32. The apparatus of claim 23, wherein the control system comprises an ultrasound control system.

33. The apparatus of claim 23, further comprising means for hermetic sealing disposed between the connection device and the liquid expulsion chamber.