PubMed · 7772854
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D Plowes. 1995. Re-using or mis-using?. https://pubmed.ncbi.nlm.nih.gov/7772854/
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The purpose of this study was to develop and to test a pressure-distribution sensor (PDS) for evaluating lip functions. The PDS is fabricated as a disposable cartridge and is based on the principle of optical-pressure conversion used in tactile sensors of robot arms. Its advantages are in measuring sealing forces, contact area, and pressure-distribution patterns of the lips at maximum effort. We used the PDS to evaluate pressure-distribution patterns of long-face subjects with extremely large interlabial distances. The results suggest that the PDS is a useful device for evaluating lip sealing functions and their changes after orthodontic therapy or orthognathic surgery.
The accuracy of flow was studied for six disposable infusion devices: Eclipse (Block Medical), Homepump (Block Medical), Intermate (Baxter Healthcare), MedFlo (Secure Medical), ReadyMED (McGaw), and SideKick (I-Flow). Each infusion device had a preset delivery rate of 100 mL/hr. Either 48 or 50 units of each device were filled with 100 mL of 0.9% sodium chloride injection. Flow was measured in a 60-mL syringe set 100 cm above the infusion device. The volume infused was recorded over 60 minutes at 5-minute intervals. Of the six devices tested, Homepump demonstrated the least variability in flow. The mean percentage of initial volume infused at 60 minutes was 93.7% for the Homepump, 92.4% for the MedFlo, 91.9% for the SideKick, 88.7% for the ReadyMED, 87.3% for the Eclipse, and 83.4% for the Intermate. The Intermate was the only device with a mean overall infusion rate outside the manufacturer's specifications of +/- 15%. The SideKick's mean infusion rate exceeded the +/- 15% range during the first half of the infusion. None of six disposable infusion devices delivered 100% of the volume to be infused within 60 minutes. Of the devices tested, the Homepump demonstrated the least variability in flow and the most complete volume delivery.