En cours de modification Bear 33

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The Bear 33 Ventilator is a type of transport ventilator that makes use of a motor driven piston to provide volume ventilation to patients. It is different from ventilators used for critical care and cannot separate sources of compressed gas.

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[flag|biomed]

== Background and Identification ==

The Bear 33 Ventilator was created by Bear Medical Systems Inc, and released in the 1980s. Its part number is 50000-00833/4. There is a one-way valve within the ventilator which is used to allow the patient to breathe. When fully charged, the internal battery of the ventilator can provide 1 hour of power to the ventilator but this is not advised to be used for long periods of time. Rather, the use of an external battery or power supply is a more convenient and safe choice.

The Bear 33 is also equipped with features like its visible and audible low-pressure alarm, high pressure alarms (limits of both alarms can be adjusted), and an exhalation valve. The ventilator does not have a monitor to view the flow of oxygen to the patient or a positive and expiratory pressure valve, so these things need to be attached to the ventilator in a situation that they are needed.

The Bear ventilator has the ability to provide 3 modes of ventilation:

1.     Control Ventilation

2.     Assist-Control Ventilation

3.     Synchronous Intermittent Mandatory Ventilation

It makes use of its tidal volume, rate, peak flow, and assist sensitivity to control and set each of these ventilation modes. The manufacturing of the Bear 33 ventilator has however,  been discontinued.

== Technical Specification ==

Dimensions: 7.5 x 14 x 12.8 inches

Weight: 14.5kg (32 lbs.)

Depth: 12.8 inches

Rate: 6 to 375 cycles/minute

Delivery Pressure: 5 to 100cmH20

Volume: 10 to 1500cm3

Electrical Range: 96 to 132 VAC

=== ++Battery Specifications++ ===

Normal Voltage: 12V

Normal Capacity: 3.5Ah

Terminal Type: F1

== Additional Information ==

*  [link|https://apps.dtic.mil/sti/pdfs/ADA241836.pdf|Report on the testing and evaluation of the Bear 33 Volume ventilator system] 

*  [link|https://www.homehealthprovider.com/doc/bear-medical-systems-inc-0001|Company Profile of Bear Medical Systems Inc.]

*  [link|https://www.kwipped.com/rentals/product/bear-33-portable-volume-ventilator/1866|Bear 33 Ventilator Rental]

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Bear 33 Instruction Manual.pdf

Bear 33 Maintenance Manual.pdf

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