1 / 17

Neonatal Chest Compression Device

Neonatal Chest Compression Device. Courtney Gallagher Jillian Zeber Advisor: Dr. Walsh, Vanderbilt NICU. Problem Statement. When performed in conjunction with operations of the neck and lower abdomen, there is limited space for manual chest compressions.

casper
Télécharger la présentation

Neonatal Chest Compression Device

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. Neonatal Chest Compression Device Courtney Gallagher Jillian Zeber Advisor: Dr. Walsh, Vanderbilt NICU

  2. Problem Statement • When performed in conjunction with operations of the neck and lower abdomen, there is limited space for manual chest compressions. • Manual chest compressions require both hands to be wrapped around the chest. • 2 occurrences at the Vanderbilt NICU this past year.

  3. Project Goal • Small, easy to setup device that will perform automatic chest compressions on a 0-30 day old infant for use in the OR during a simultaneous procedure.

  4. Performance Criteria • Small but adjustable to fit the size of the baby. • Provide enough force for sufficient chest compressions to reduce the width to one third, 2 to 3 cm. • Apply the 11-12 lbs of force directly below the nipples in the center of the chest. • Verified with bathroom scale and free weights. • Maintain a rate of 80-100 compressions per minute for blood pumping. • Simple and easy to use by Dr. Walsh in the NICU

  5. Force Required for Chest Compressions Desired Force Range: 11 – 12 lbs

  6. Solution Proposal 15 cm Solenoid Valve Electronic Timer Power Supply 2-3 cm 6-9 cm Adjustable depending on size of the baby

  7. Solution Proposal 15 cm Solenoid Valve Electronic Timer Power Supply 5 cm 4-6 cm Adjustable depending on size of the baby

  8. Solution Proposal Exhaust 3- WAY Air Cylinder Air Compressor

  9. Device Components • Single-acting spring return pneumatic cylinder • Air compressor with coil hose • Solenoid valve controlled by electronic timer • On/off time range: 0.1 s to 99 hr • Power supply: wall outlet • 1.1 inch diameter plunger to displace chest 2-3 cm • Wheel-up cart supporting electronic components & air compressor • Support structure: • Currently: stand with base and adjustable arm • Ideally: Swivel arm connected to side panel of GE OmniBed

  10. Calculations Air Cylinder Specs Timer Settings • On/Off time: • Cycle Length = 1/Cycle Freqency • On/Off time = Cycle Length/2 • Bore size: F = p A= p π d2/4       where F = force exerted (N) p = gauge pressure (N/m2, Pa) A = full bore area (m2) d = full bore piston diameter (m) F = 11 lbs = 50 N p = 100 psi = 689.5 kPa  d = 10 mm ≈ 7/16” • Stroke length: > 3 cm with extra space  5 cm ≈ 2”

  11. Factors • Provide necessary but not excessive force (11-12 lbs = 5 kg) • Materials that can be sterilized • Comfortable • Quick setup • Potentially portable • Safety • Adjustable

  12. Implementation of Factors into Design • Sterilizing plunger and stopper with plastic drapes • Dr. Walsh • Vary force applied with the psi of compressed air applied to cylinder • Variable rate with micro-timer • Adjustable with flexible arm coming out of NICU bed

  13. Evaluation • Isabel in the NICU Simulation Lab • Responds like an alive baby • Provides vitals • Can determine if chest compression are adequate

  14. Previous Work • Researched existing adult compression devices • AutoPulse, Lucas, Thumper • Established goals and criteria that must be met • Discussed with advisors • Measured force required to provide chest compressions • Decided on a prototype design • Pneumatic cylinder • Researched and purchased materials to build prototype • Pneumatic cylinder and Air compressor • Solenoid valve, timer • All necessary connections • Tested simplified version of prototype • Verified applied force was correct • Ordered more parts

  15. Current Work • Finishing DesignSafe • Getting in touch with GE contact • Kent Meeks • Building complete version of prototype • Testing full prototype

  16. Future Work • After testing, make modifications and re-test • Build flexible arm • Test • Make Demo • Evaluate effectiveness against traditional method

  17. References • http://www.zoll.com/medical-products/cardiac-support-pump/autopulse/ • http://content.onlinejacc.org/cgi/content/full/44/11/2214/FIG2 • http://www.omega.com/auto/pdf/SimpValvesguide.pdf • http://www.gehealthcare.com/euen/maternal-infant-care/products/microenvironments/giraffe_omnibed/index.html • http://www.engineeringtoolbox.com/pneumatic-cylinder-force-d_1273.html

More Related