"please keep me updated about oximeters "
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inventor of cpap
I'm so glad that Colin has avoided taking credit for inventing CPAP, because I INVENTED IT. I have photos from 1973 or 1974 of a jury-rigged device which I submitted to the AART (at the time) journal, and their critique about my placement of the proximal pressure monitor. Just thought you'd like to know
Views: 204
Replies to This Discussion
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Permalink Reply by Mary Z on
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So, what is your field of expertise and what lead you to invent a CPAP machine?
Scott, thanks, by the way.
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Permalink Reply by scott reed on
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I am one of those old dinosaurs in Respiratory Therapy who took the Registry exam when there were oral exams as well as written. It was days of unlimited parts from disassembled equipment and some really fun times 'creating' things, and submitting ideas and articles to the national journals. I would like to think that some of our ideas contributed to the improved products we see on the market today.
Mary Z said:So, what is your field of expertise and what lead you to invent a CPAP machine?
Scott, thanks, by the way.
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Permalink Reply by RockRpsgt on
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Not to be a nay-sayer Scott. We have 2 prominent physicians in Dr. Rappaport and Dr. Collins who both worked on the original PAP system. Neither of them accept full credit. Why here on SG would you demand it? Just wondering.
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first, I enjoy a little controversy. second, I didn't demand anything. and third, when I find it I will post my original photo of a prototype that did receive attention from the aart in the early 70's, which may or may not preceed work the Collins did. maybe he saw the article and improved on it
Rock Hinkle said:Not to be a nay-sayer Scott. We have 2 prominent physicians in Dr. Rappaport and Dr. Collins who both worked on the original PAP system. Neither of them accept full credit. Why here on SG would you demand it? Just wondering.
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I guess demand was a harsh word. I am sorry for that. Why did you not take your invention further? What were the roadblocks that you faced in the early 70s? What did you use as your blower motor? I find it very interesting that Dr. Collins used a hoover vaccume motor for his.
LOL@controversy
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Thank you...it has saved my life
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my goodness, I'm so glad for you Suzanne. the response to CPAP, or the Autotitration version APAP, is so variable. But you are one of the many who benefit and reduce risk of damage to heart, brain, and all organs due to hypoxemia during nocturnal apnea. some people can't or won't wear it due to claustrophobia or other reasons, but would benefit if they would wear it during sleep.
suzanne schroeder said:Thank you...it has saved my life
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I took parts from a fluidic ventilator, simple pressure guage and flowmeter, Bennett humidifier and anesthesia bag, and used a high pressure oxygen or air source rather than a compressor (as you described the vacuum motor). one of the common complaints today is the noise from the exhalation valve (whisper swivel), which is nothing compared to a hoover motor. the complaints that I received back at that time was the location of the proximal pressure line which I had put at the patient side of the humidifier. looking back, meeting the flow demands of some patients would be difficult without a venturi to multiply the flow. It was suggested (properly) to be at the patient interface (mask). simple enough. the field of polysomnography probably had barely been dreamed of at that time. we've come a long way.
Rock Hinkle said:I guess demand was a harsh word. I am sorry for that. Why did you not take your invention further? What were the roadblocks that you faced in the early 70s? What did you use as your blower motor? I find it very interesting that Dr. Collins used a hoover vaccume motor for his.
LOL@controversy
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scott reed said:I took parts from a fluidic ventilator, simple pressure guage and flowmeter, Bennett humidifier and anesthesia bag, and used a high pressure oxygen or air source rather than a compressor (as you described the vacuum motor). one of the common complaints today is the noise from the exhalation valve (whisper swivel), which is nothing compared to a hoover motor. the complaints that I received back at that time was the location of the proximal pressure line which I had put at the patient side of the humidifier. looking back, meeting the flow demands of some patients would be difficult without a venturi to multiply the flow. It was suggested (properly) to be at the patient interface (mask). simple enough. the field of polysomnography probably had barely been dreamed of at that time. we've come a long way.
Rock Hinkle said:I guess demand was a harsh word. I am sorry for that. Why did you not take your invention further? What were the roadblocks that you faced in the early 70s? What did you use as your blower motor? I find it very interesting that Dr. Collins used a hoover vaccume motor for his.
LOL@controversy - Attachments:
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cpap.jpg, 70 KB
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here's that bad boy. The smaller bore tubing going down to a water bottle to adjust the amount of cpap
scott reed said:scott reed said:I took parts from a fluidic ventilator, simple pressure guage and flowmeter, Bennett humidifier and anesthesia bag, and used a high pressure oxygen or air source rather than a compressor (as you described the vacuum motor). one of the common complaints today is the noise from the exhalation valve (whisper swivel), which is nothing compared to a hoover motor. the complaints that I received back at that time was the location of the proximal pressure line which I had put at the patient side of the humidifier. looking back, meeting the flow demands of some patients would be difficult without a venturi to multiply the flow. It was suggested (properly) to be at the patient interface (mask). simple enough. the field of polysomnography probably had barely been dreamed of at that time. we've come a long way.
Rock Hinkle said:I guess demand was a harsh word. I am sorry for that. Why did you not take your invention further? What were the roadblocks that you faced in the early 70s? What did you use as your blower motor? I find it very interesting that Dr. Collins used a hoover vaccume motor for his.
LOL@controversy
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Scott, that bod boy is a monster! What lead you to even realize sleep apnea was something that existed and needed treating.
scott reed said:here's that bad boy. The smaller bore tubing going down to a water bottle to adjust the amount of
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Hi again. Is that a welsh corgi? or something similar? Ok, we have always had various simple devices to treat low oxygen levels in the acute care setting. by far the most common is the nasal cannula, simple and easy to use up to 6L/min of oxygen. really solves 90% of oxygen problems in hospitals and ambulances and clinics. It's that other 10% that needs the fancy stuff. A simple oxygen mask goes on from there say 7-15L/min oxygen translates to maybe 50% oxygen. Then is the hi flow venturi devices usually up to 65% or a lilttle more with multiplied flow due to the bernoulli effect of oxygen at high flow 100% enlisting more flow room air at 21% to produce a high flow mixture to meet rapid respiratory rates and increasing oxygen demands 30L, to even 50, 60 L/min. someone getting really septic from infection or pneumonia, or heart failure or many other things going wrong. these are all devices operating in ambient pressures. Now even more fancy are the high flow generators, providing up to 100% oxygen at high flow rates and under some positive pressure. some use a nasal cannula to deliver it, many, such as cpap and apap do this under constant or variable pressure. The home versions are limited to 6L or so extra flow oxygen or 30% or so, works in most situations. These devices are used to treat OSA or obstructive sleep apneas, sometimes Restrictive diseases, and sometimes the more life threatening forms of heart failure, combining with diuretics to re-coordinate heart and lung function. It is impressive the high percentive of patients receiving this combination can even return home that same day recovering very quickly. it really goes on and on and new procedures every day. It's really exciting to live and work during this period when people can improve and go home so fast. Hope that helps some. scott
Mary Z said:Scott, that bod boy is a monster! What lead you to even realize sleep apnea was something that existed and needed treating.
scott reed said:here's that bad boy. The smaller bore tubing going down to a water bottle to adjust the amount of
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