Ventilator monitor and alarm apparatus
First Claim
1. A monitor and alarm apparatus for monitoring a respiratory circuit comprising:
- (a) first pressure sensing means for sensing pressure in said respiratory circuit, and electronic circuit means cooperating therewith for turning said apparatus on in response to pressure sensed by said first pressure sensing means,(b) second pressure sensing means for continuously sensing the breathing cycle pressure of a user in said circuit independent of said first pressure sensing means,(c) first alarm enabling means for creating an alarm condition in response to pressure sensed by said first pressure sensing means being below a selected low pressure limit for a preselected period of time,(d) second alarm enabling means including adjustable low pressure threshold setting means for creating an alarm condition in response to said breathing cycle pressure sensed by said second pressure sensing means failing to pass through said low pressure threshold within a preselected period of time, and(e) alarm means actuated by said first and second alarm enabling means.
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Abstract
An improved apparatus for monitoring a respiratory circuit comprises two independent pressure sensing means, a first pressure sensing component having a preset minimum pressure for creating an alarm condition in response to pressure falling below the minimum, and a second pressure sensing component having an adjustable low pressure threshold setting means and for creating an alarm condition if the patient'"'"'s breathing cycle pressure fails to periodically pass through the low threshold pressure. A preferred embodiment includes visual pressure indicating means including a display of the low threshold pressure setting and a display of the patient'"'"'s breathing cycle pressures.
75 Citations
19 Claims
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1. A monitor and alarm apparatus for monitoring a respiratory circuit comprising:
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(a) first pressure sensing means for sensing pressure in said respiratory circuit, and electronic circuit means cooperating therewith for turning said apparatus on in response to pressure sensed by said first pressure sensing means, (b) second pressure sensing means for continuously sensing the breathing cycle pressure of a user in said circuit independent of said first pressure sensing means, (c) first alarm enabling means for creating an alarm condition in response to pressure sensed by said first pressure sensing means being below a selected low pressure limit for a preselected period of time, (d) second alarm enabling means including adjustable low pressure threshold setting means for creating an alarm condition in response to said breathing cycle pressure sensed by said second pressure sensing means failing to pass through said low pressure threshold within a preselected period of time, and (e) alarm means actuated by said first and second alarm enabling means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17)
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14. A monitor and alarm assembly for monitoring a respiratory circuit comprising:
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first pressure sensing means for sensing pressure in said respiratory circuit and first alarm enabling means cooperating therewith for creating an alarm condition in response to pressure sensed thereby being below a preselected minimum pressure sensed by said first pressure sensing means, second pressure sensing means for continuously sensing user breathing cycle pressure in said respiratory circuit and second alarm enabling means cooperating therewith including adjustable low pressure threshold setting means for creating an alarm condition in response to said breathing cycle pressure failing to pass through said low pressure threshold within a preselected time period, and alarm means actuated by either said first or second alarm enabling means. - View Dependent Claims (15, 16, 18)
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19. A monitor and alarm assembly for monitoring a respiratory circuit comprising:
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first pressure sensing means for sensing pressure in said respiratory circuit and first alarm enabling means cooperating therewith for creating an alarm condition in response to pressure sensed thereby being below a preselected minimum pressure sensed by said first pressure sensing means, second pressure sensing means for continuously sensing user breathing cycle pressure in said respiratory circuit and second alarm enabling means cooperating therewith including adjustable low pressure threshold setting means for creating an alarm condition in response to said breathing cycle pressure failing to pass through said low pressure threshold within a preselected time period, alarm means actuated by either said first or second alarm enabling means, and visual pressure indicating means comprising a pressure scale covering at least the normal pressure range of a patient'"'"'s breathing cycle, a low pressure limit indicator cooperating with said adjustable low pressure threshold setting means for visually indicating the selected low pressure threshold pressure on said pressure scale, and a visual pressure indicator for graphically displaying the pressure of the patient'"'"'s breathing cycle pressure on said pressure scale.
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Specification