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Electronic pneumothorax monitoring device

  • US 5,816,245 A
  • Filed: 06/01/1995
  • Issued: 10/06/1998
  • Est. Priority Date: 06/01/1995
  • Status: Expired due to Fees
First Claim
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1. A device for detecting the presence of pneumothorax in a patient comprising:

  • a. a non-coherent light source for shining light on a patient, mounted on a first patch, capable of being attached to the patient;

    b. a light detector for receiving light from the patient mounted on a second light shielding patch, capable of being attached to the patient, said detector producing a first signal in response to received light, wherein the first and second patches being independently attachable to the patient and removable from the patient;

    c. driving means for causing the light source to turn on and off at a predetermined frequency;

    d. means for receiving the first signal from said light detector including a bandpass filter tuned to the predetermined frequency and producing a second signal indicating the presence of pneumothorax when said first signal exceeds a threshold; and

    e. alarm means for producing an alarm indicating the presence of pneumothorax in response to said second signal.

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