1 / 18

MRI INFUSION PUMP

MRI INFUSION PUMP. Group Members: Aman Ghotra – Team Leader Can Pi – Communicator Miguel Benson - BSAC Prakash Rao – BWIG Client: Dr. George Newman, Ph.D. Frank Hospod Advisor: John Webster, Ph.D. OUTLINE. Problem Statement Client’s Requirements Designs 1-3 Spur Gear Vane Pump

freeman
Download Presentation

MRI INFUSION PUMP

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MRI INFUSION PUMP Group Members: Aman Ghotra – Team Leader Can Pi – Communicator Miguel Benson - BSAC Prakash Rao – BWIG Client: Dr. George Newman, Ph.D. Frank Hospod Advisor: John Webster, Ph.D.

  2. OUTLINE • Problem Statement • Client’s Requirements • Designs 1-3 • Spur Gear • Vane Pump • Peristaltic Pump • Decision Matrix • Stepping Motor • Design Proposal • Future Goals

  3. PROBLEM STATEMENT • Current MRI compatible infusion pumps are syringe-driven • Limitations: • Flexibility in programming • Saline and gadolinium capacities (60 mL and 60 mL, respectively) • Time Consuming (~7 min) www.medrad.com

  4. CLIENT REQUIREMENTS • The pumps must: • Be made of a non-ferrous material • Minimize gadolinium or saline waste • Deliver accurate flow rates • (0.2-4 mL/s, ± 0.02 mL/s) • Be easily sterilized and durable • Be programmable • Sequence: saline→bolus →saline →infusion →saline • Manage time to produce consistent images • Attach to containers (60/180 mL)

  5. SPUR GEAR PUMP • A pair of matched gears rotate in opposite directions. • The air pockets created by the rotating gears draw in the liquids. • The fluid exit at the outlet of the gear. http://www.mech.uwa.edu.au/DANotes/gears/meshing/meshing.html#top

  6. PROS & CONS • PROS • Low cost • Simple • Reliable • Efficient • CONS • Hard to sterilize • Sanitizing solution • Replacement

  7. VANE PUMP http://www.animatedsoftware.com

  8. VANE PUMP (cont.) • Cost • Varies greatly • $174 - $2993 • Parts • Rotor • Vane plates • Casing http://www.animatedsoftware.com/

  9. PROS AND CONS Pros • Develops good vacuum • Good with thin liquids • Can change displacement and angle Cons • Complex • Not for thick liquids • Contamination possible • Hard to Clean

  10. PERISTALTIC PUMPS • Flow rate controlled by roller clamp • Tube walls squeezed to form seal as roller moves along tube • More rollers increase accuracy http://www.animatedsoftware.com/pumpglos/peristal.htm

  11. PERISTALTIC PUMPS (cont.) • Positive Displacement Pump • Used in a variety of medical applications http://www.pump-manufacturers.com/suppliers/environmentalpumping.html

  12. PERISTALTIC PUMPS (cont.) • Accuracy decreases as tubing wears and loses flexibility • BUT, tubing will be changed after every patient • Very sterile – no external contact with fluid • Typical price range: $170+ http://www.uspto.gov/

  13. DESIGN EVALUATION 0 – worst; 3 - best

  14. STEPPING MOTORS • Converts electrical energy into motion • Characteristics: • Voltage = Torque • Low cost ($60 & up) • Easily programmable • C/C++ Program • Labview http://eio.com/step-rot.html

  15. DESIGN PROPOSAL Alternative: If we can’t find out how to deshield the pump/motor case: We will have the motor in the control room and connect this with the rest of the apparatus through the wall.

  16. FUTURE GOALS • Work on budget with client • Buy parts to assemble pump • Buy an economical Stepper Motor • Learn programming • Figure out deshielding options/nonferrous materials

  17. Questions?

More Related