Condensation collector for respiration system

• US 5,398,677 A
• Filed: 07/27/1993
• Issued: 03/21/1995
• Est. Priority Date: 07/27/1993
• Status: Expired due to Fees

• Current Assignee: Charles A. Smith
• Original Assignee: Charles A. Smith
• Inventors: Smith, Charles A.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Raciti, Eric P.
• Application Number:
  US08/907,113
• Time in Patent Office: 602 Days
• Field of Search: 128/205.27, 128/205.12, 128/205.24, 128/912
• US Class Current: 128/205.12
• CPC Class Codes: A61M 16/0808 Condensation traps
• CPC Class Codes: A61M 16/0875 Connecting tubes

Abstract

A condensation collector for inhalation and exhalation conduits as used for anesthesia or other respiratory support purposes, comprises a container having a top inlet, a condensate collection chamber having a bottom outlet constituting a valve seat which bottom outlet is connected to the container inlet, and a buoyant ball or other valve closure member disposed in the collection chamber and movable between a closed position sealing the valve seat and an open position floating on accumulated condensate above the valve seat. The condensate collection chamber is above the valve closure member in fluid communication with either the inhalation or the exhalation conduits.

Claims

1. A condensation collector for removing condensate of predetermined density from the inhalation and exhalation conduits of a respiratory support system comprising:

a ventilator/humidifier apparatus having a fresh air make-up inlet, a return inlet, and an outlet, an inhalation conduit for connecting the ventilator/humidifier outlet to a patient, an exhalation conduit for connecting the patient back to the ventilator/humidifier return inlet, and a condensate discharge connection connected to each of the conduits, the condensation collector comprising;

a condensate container having an inlet adjacent the top of the container;

a collection chamber having an inlet and a bottom outlet connected to the condensate container inlet;

a valve housing in fluid communication with said collection chamber inlet having two inlets and a pressure actuated valve operatively positioned within said valve housing providing means to selectively permit discharge from said discharge connections of said conduits;

two condensate conduits each having two ends the first of said ends being respectively connected to one said condesate discharge connections and the second of Said respective ends each attached to an inlet of said valve housing;

a buoyant valve closure member, having a density less than said predetermined density, disposed within the collection chamber for movement between a closed position in which the closure member closes the bottom outlet of the collection chamber and an open position in which the closure member floats on accumulated condensate above the bottom outlet.

2. A condensation collector for a respiratory support system according to claim 1 in which the valve closure member has the configuration of a ball.

3. A condensation collector for a respiration system according to claim 2 and further comprising:

a valve closure member guide extending radially across the collection chamber and having a central aperture, aligned with and encompassing the central part of the valve closure member when that member is in its closed position.

4. A condensation collector for a respiratory support system according to claim 2 and further comprising:

an O-ring mounted in the bottom of the collection chamber in encompassing relation to the chamber outlet;

the O-ring affording a valve seat for the valve closure member.

5. A condensation collector for a respiratory support system according to claim 2, and further comprising a valve seat for the valve closure member comprising:

a disc of flexible material mounted in the bottom of the collection chamber and having a central aperture aligned with the chamber outlet.

6. A condensation collector for a respiratory support system according to claim 2 in which the valve closure member is a ping-pong ball.

7. A respiratory support system comprising:

ventilator/humidifier apparatus having an inlet, a return, and an outlet;

an inhalation conduit, comprising a corrugated hose, for connecting the ventilator/humidifier outlet to a patient;

an exhalation conduit, comprising a corrugated hose, for connecting the patient back to the ventilator/humidifier return;

at least one condensate discharge connection connected to a low point in one of the inhalation or exhalation conduits, said conduit discharge connection comprising a probe defining means for inserting Said condensate discharge connection a predetermined distance into one of said inhalation or exhalation conduits during operation of said respiratory support system;

a condensate container having an inlet adjacent the top of the container;

a collection chamber having a bottom outlet connected to the condensate container inlet;

a buoyant valve closure member, having a density less than said predetermined density, disposed within the collection chamber for movement between a closed position in which the closure member closes the bottom outlet of the collection chamber and an open position in which the closure member floats on accumulated condensate above the bottom outlet;

and a condensate conduit for connecting said condensate discharge connection to the collection chamber, above the valve closure member.

8. The respiratory support system of claim 7 wherein duplicate condensate discharge connections are provided one of which is respectively connected to each of the inhalation and exhalation conduits and wherein there is provided duplicate condensate conduits for connecting each of the condensate discharge connections to the collection chamber.

9. The respiratory support system of claim 7 wherein said conduit discharge connection is secured to said inhalation or exhalation conduits by a strap encircling said conduit having a hole therethrough for passage of said probe of said conduit discharge connection.

10. The respiratory support system of claim 9 wherein said strap includes opposing upturned ends disposed adjacent to one another.

11. The respiratory support system of claim 10 wherein said upturned ends are secured by a fastener to retain said strap around said conduit.

12. A respiratory support system according to claim 7 in which the valve closure member has the configuration of a ball.

13. A respiratory support system according to claim 12 and further comprising:

an O-ring mounted in the bottom of the condensate collection chamber in encompassing relation to the chamber outlet;

the O-ring affording a valve seat for the valve closure member.

14. A respiratory support system according to claim 12 and further comprising:

a valve closure member guide extending across the collection chamber and having a central aperture, aligned with and encompassing the central part of the valve closure member when that member is in its closed position.

15. A condensation collector for a respiratory support system according to claim 12 in which the valve closure member is a ping-pong ball.

16. A condensation collector for a respiratory support system according to claim 12, and further comprising a valve seat for the valve closure member comprising:

a disc flexible material mounted in the bottom of the collection chamber and having a central aperture aligned with the chamber outlet.

17. A condensation collector for a respiratory support system according to claim 16 in which the valve seat material is an elastomer.