ࡱ> TVS? jbjb .}} lFFFFF R<FQ2}}}vQxQxQxQxQxQxQ,R  UQ}}}}}QQQQQ}vQQ.}vQQQerMOIFF;jO8OQQO8UQUOQProject: Mouse Heart Team Members: Hannah Kirking, Ankur Sharma, Steve Trier Client: Ken Campbell, Ph.D Date: 4/21/04-4/27/04 Problem Statement: We are interested in making a device to measure the stiffness of intact mice hearts at different phases of the cardiac cycle. Our idea is to place a pressure transducer inside a small balloon inside the mouse heart and inject small quantities (perhaps 5 l) of saline into the balloon. The stiffness of the heart will be defined as the change in pressure divided by the change in volume. The difficult bit of the project is that we need to attain rapid measurements to precisely determine when the data was recorded (ideally within a few ms). More specifically, the main goal of the project is to design a micro-fluid injecting device that dispenses between 3-5 l of saline into a 0.65mm ID catheter. Restatement of Team Goals: Finish machining housing for stack and syringe Measure dispensed volume when machining is done Summary of Accomplishments: Professor Chessler helped us set up the flow problem Began solving equations using broad assumptions Coordinated TTL and firing of stack Statement of Team Goals for upcoming week: Finish constructing prototype Continue testing electronics with low voltages while waiting for LEMO-BNC adapter Measure volume dispensed with a range of voltages Project Schedule: WeekActivities1Met with Client, decided to research piezo design more 2Set up meeting with professor Chessler, so we can make the proper calculations.3Meet with professor Chessler, find force required to push fluid in allotted time. 4Finish flow calculations, research lever and materials for final design. Begin initial designs5Decide on most practical and feasible design and piezo device.6Order machined components and work on midsemester presentation7Midsemester Presentation and waiting for components.8Design experimental testing9Outreach planning10 Designing Prototype11Patent Disclosure12Designing Prototype13Building prototype14Testing/ Analysis15Final poster Difficulties: Ordered LEMO-BNC connector Monday, hoping it arrives tomorrow Cant test high voltages (large displacement) without adapter Activities (time spent on project): Ankur: 3 hours outreach, 1 hour meeting with Professor Webster, 11 hours working on prototype, 2 hours debugging electronics, 1 hour planning electronics Steve: 3 hours outreach, 1 hour meeting with Professor Webster, 9 hours working on prototype, 1 hours finding LEMO-BNC adapter, 1 Hour working with Ken on the electronics, 3 Hours debugging electronics Hannah: 3 Hours outreach, 1 hour meeting with Professor Webster, 11 hours working on prototype, 2 hours debugging electronics, 1 hour shopping for parts Running total (hours): Ankur: 38 Steve: 38 Hannah: 38 Cost Analysis Part Cost P239.90 piezo stack $2940 Hamilton Series 1000 Gastight Syringe (2.5 mL) $41 P210.10 LEMO-BNC $54 TOTAL $3035 $OVjoS T U o w E 7>*5CJ 5CJ OjT U p ! 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Courier New;Wingdings"qh!ۄF!ۄFq: !>0d A ^3qH6Project: Barostat for Measuring Esophageal Strictures Gary Kirking Bock Labs Oh+'0 $0 L X dpx'7Project: Barostat for Measuring Esophageal Stricturesgroj Gary KirkingostaryNormalr Bock Labsng2ckMicrosoft Word 9.0f@@}},@}},q: ՜.+,D՜.+,h$ hp  'WWTCwi  7Project: Barostat for Measuring Esophageal Strictures TitleD@ 8_AdHocReviewCycleID_EmailSubject _AuthorEmail_AuthorEmailDisplayName_ReviewingToolsShownOnce'iL8Progress Report1ownkmwilliams3@students.wisc.edusoKelly Williamsdell  !"#$%&'()*+,-./0123456789:;<=>?@ABDEFGHIJLMNOPQRURoot Entry F9S,W1TableUWordDocument.SummaryInformation(CDocumentSummaryInformation8KCompObjXObjectPool9S,9S, FMicrosoft Word DocumentNB6WWord.Document.8