Ventilating training apparatus with fault simulation

• US 4,996,980 A
• Filed: 04/04/1990
• Issued: 03/05/1991
• Est. Priority Date: 09/27/1989
• Status: Expired due to Fees

• Current Assignee: Dragerwerk AG
• Original Assignee: Dragerwerk AG
• Inventors: Simon, Frank, Frankenberger, Horst
• Primary Examiner(s): Crowder, Clifford D.
• Assistant Examiner(s): RACITI, ERIC
• Application Number:
  US07/504,307
• Time in Patent Office: 335 Days
• Field of Search: 128/200.24, 128/202.22, 434/219, 434/262, 434/265, 434/366
• US Class Current: 128/200.24
• CPC Class Codes: G09B 23/28 for medicine

Abstract

The invention is directed to a fault triggering component for life-sustaining systems such as ventilating apparatus and anesthesia apparatus. The fault triggering unit is adapted so as to be connectable to or exchangeable with one of the standard plug-in components of the system. The fault triggering unit includes at least one remote-controllable drive member and this drive member is connected to a movable triggering component which triggers at least one fault with its movement. A circuit arrangement for assembling a training program for a ventilating apparatus having a lung simulator is also disclosed.

Claims

1. A ventilating apparatus comprising standard plug-in components, a fault triggering unit adapted so as to be connectable to or exchangeable with one of the plug-in components, the fault triggering unit including:

a holding structure;

a movable triggering component mounted in said holding structure so as to be movable to trigger a fault in the apparatus; and

,

remotely-controllable drive means for actuating said triggering component to move said triggering component.

2. The ventilating apparatus of claim 1, said drive means including:

a drive member movably journalled in said holding structure so as to be movable between a first position corresponding to a normal operation of said apparatus and a second position corresponding to said fault; and

, remotely-controlled actuating means for actuating said drive member for movement between said positions.

3. The ventilating apparatus of claim 2, said actuating means being a pneumatically remote-controlled actuating means.

4. The ventilating apparatus of claim 2, said actuating means being a hydraulically remote-controlled actuating means.

5. The ventilating apparatus of claim 2, said actuating means being an electrically remote-controlled actuating means.

6. The ventilating apparatus of claim 1, said holding structure being a housing having a connecting stub and said triggering component being a tube fitted over said connecting stub to define a tube connection;

said drive means including a slide piston slideably journalled in said housing so as to be movable between a first position corresponding to a normal operation of said apparatus and a second position corresponding to a fault condition; and

, said slide piston having a push surface for contact engaging said tube and for pushing said tube completely off said connecting stub when said slide piston reaches said second position.

7. The ventilating apparatus of claim 6, said fault triggering unit further comprising resilient biasing means for resiliently biasing said slide piston into said first position.

8. The ventilating apparatus of claim 6, further comprising overrideable detent means defining an intermediate position between said first and second positions;

said connecting stub having a leakage cutout formed therein;

said slide piston being slideably journalled in said housing so as to be movable between said first position and said intermediate position to push said tube along said connecting stub so as to clear said leakage cutout when said slide piston reaches said intermediate position thereby simulating a leak in said tube connection.

9. The ventilating apparatus of claim 1, said holding structure being a housing having a connector stub mounted thereon;

said connector stub having a leakage cutout formed therein and said triggering component being a tube fitted over said connecting stub to define a tube connection therewith;

said drive means including a slide piston slideably journalled in said housing so as to be movable between a first position corresponding to a normal operation of said system and a second position corresponding to a fault condition; and

, said slide piston having a push surface for contact engaging said tube and for pushing said tube along said stub so as to clear said leakage cutout when said slide piston reaches said second position thereby simulating a leak in said tube connection.

10. The ventilating apparatus of claim 9, said fault triggering unit further comprising resilient biasing means for resiliently biasing said slide piston into said first position.

11. The ventilating apparatus of claim 1, said system including a first connecting stub and said holding structure being a housing having a second connecting stub mounted thereon;

said triggering component being a tube segment having respective longitudinal ends fitted onto corresponding ones of said connecting stubs; and

, said drive means being operatively connected to one of said connecting stubs for imparting a rotational movement thereto so as to rotate said one connecting stub relative to the other one of said connecting stubs thereby simulating a constriction in said tube segment.

12. The ventilating apparatus of claim 1, wherein the system has a central supply plug connector unit having first and second connector parts for defining a connection;

said triggering component being said first connector part and said drive means including a drive member movably journalled in said holding structure so as to be movable between a first position corresponding to a normal operation of said apparatus and a second position corresponding to said fault;

said drive member being operatively connected to said first connector part so as to displace the latter when said drive member is moved from said first position to said second position thereby simulating an interruption of said connection.

13. A circuit arrangement comprising:

gas supply means;

a ventilating apparatus;

a lung simulator;

connecting means for connecting said ventilating apparatus to said lung simulator;

a plurality of fault triggering units disposed on selected ones of said gas supply means, said ventilating apparatus, said lung simulator and said connecting means for simulating one or more faults therein; and

,

control means connected to said gas supply means for actuating one or more of said fault triggering units to simulate said one or more faults.

14. The circuit arrangement of claim 13, further comprising computer means connected to said control means for triggering one or a combination of said faults.