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TheNon-ElectricDentalPumpAnnaBandecca,KatieBeittenmiller,SamanthaShoemaker,Margaret-AnneSmith

Advisors:ConradM.Zapanta,Ph.D.,NicoleHuang,AngelaLai

MOTIVATION• Dental decay affects 3.5billionpeopleworldwide• Resources for dental careare scarce in impoverishedareas

• Facilities have noelectricity• Dental toolsare bulky,heavy,& difficult to transport

• Procedures to treat dental decay require suctioning ofblood, saliva• Traditional pumpsuse electricity• Other solutions areuncomfortable for thepatient, expensiveNEEDSTATEMENT:A portablemethod to provide fluid suctionformedical practitioners in any locationto allowfor increasedmobilemedical services.

IMPORTANCE• 92%ofpeopleaged20-64havehadatleastonecavity16

• 190millionnewcasesofdentaldecayemergeeachyear15

• Volunteerorganizations(e.g.GlobalMedicalBrigades)treatdentaldecaycases• Noelectricity,difficultytransportingtools

CurrentSolutionsforFluidSuction

OURSOLUTION• Utilizefluidmechanicstogeneratesuction• Requirespressurizedairtoflowthroughdiameterreduction(venturi)

• Pressureinsmallerdiameterdecreasestocompensateforincreasedairvelocityà Suctiongenerated(Bernoulli’sprinciple,below)

FINALPROTOTYPE

RESULTS

REFERENCES1 . "Oral Heal th ."Wo rld Heal th Organ ization .Accessed November1 0 ,2 01 6.http ://www.who.int/med iacen tre/factsheets/fs3 1 8 /en /.

2 . "GumDisease and HeartDisease -- WhatYou Shou ld Know."WebMD.Accessed November1 0 ,2 01 6.http ://www.webmd .com/o ral -heal th /featu res/heal th y-teeth -heal th y-heart.

3 . "HP IResearch B riefs - YoungAdu ltsMostLikely to P urchase .. ."Accessed November1 0 ,20 1 6.http ://www.ada.o rg/~/med ia/ADA/Scien ceand Research /HP I/Fi les/HP IB rief_0 8 1 4 _3 .ash x.

4 . "Vo lun teerin g in P ubl icHeal th |P ub l icHeal th .o rg."P ub licHeal th .o rg.20 16 .Accessed November1 0 ,2 01 6.http ://www.pub lich eal th .org/vo lun teerin g/.

5 . Vo lun teerin g in th eUnited States.Accessed November1 0 ,2 0 16 .h ttp://www.b ls.go v/news.release/pd f/vo lun .pd f.

6 . Amo l AshokBahekar,Sarab jeet Sin gh ,Sandeep Saha, Jano sMo ln ar,RohitAro ra. “Thep revalen ceand in ciden ceo fco ronaryh eartd isease i s sign i fican tly increased in p eriodon ti ti s:Ameta-analysis”.American Heart Jou rnal , Vo lume1 5 4, Issu e5,November2 0 0 7,Pages8 3 0 -83 7 , ISSN0 00 2-8 70 3,h ttp ://d x.do i .o rg/1 0 .1 0 16 /j.ah j .20 07 .06 .0 37 .

7 . "VacuumAsp irato rP ump ."SP SC IENCEWAREVa cu umAsp irato rP ump - 21 TP48 |3 29 47 -00 00 - Gra in ger. Grain ger,n.d .Web .2 4Nov.2 01 6.

8 . Toppa,Sab rin a, “One-Th ird o f theWo rld ’sP opulationSu ffersFromUn treated Too thDecay”.TimeHeal th Research ,March 2 0 1 5.<h ttp://time.com/3 7 3 29 25 /one-th i rd -wo rld -too th-decay/>

9 . “Den tal C aries (Too th Decay) in Adu lts (Age2 0 to6 4)”.h ttp s://www.nid cr.n ih.go v/DataStatistics/FindDataByTop ic/Den talCaries/Den talCariesAdu lts2 0 to64 .h tm

ACKNOWLEDGEMENTS• Wewould like to thankDr.Conrad Zapanta andAngela Lai forallof their

help andadvising on this project. Wewould also like to thank ourprojectmentor, Nicole Huang, who developed the firstprototype and withoutwhom this final prototype would notexist. Lastly,wewould like toacknowledge theUndergraduate Research Office forproviding the fundingfor this project.

Solution1:Personalbatterypoweredvacuum

• 1– 3hourbatterylife• 110– 240Vbattery• Smallcollectingcanister

Solution2:Dixiecup– usedinmobileclinicsinruralareas

• Inefficient(slowsprocedure)• Uncomfortableforpatients

Simulatedruntimewithpressureregulatorat40psi

• Nomovingparts• simple&easytoclean

𝑃" +12𝜌𝑣"

( + 𝜌𝑔ℎ" = 𝑃( +12𝜌𝑣(

( + 𝜌𝑔ℎ(

• Noelectricityrequired• Compact

VenturiSystem

CADmodeloffinalprototype

• Pumpedupviamanualfootpumptominimumof40psiin~45minutes

• Runtimeof~25minutes• Carryingsuitcaseforportability• Aluminumairtanktoholdpressurizedair• Footpedalforcontrollingsuction• Pressureregulatortoextendruntime• Collectingcanisteronsideoftank

• Stage1Testing(Water):Ensurebackflowiseliminated,flowthroughthetubingissmoothanduninterrupted,anddeterminearelativesuctionrateà Results:10mL/15sec=0.66mL/ssuctionrate,nobackflow

• Stage2Testing(GlycerolasImitationBlood):Determineifincreasedviscosityaffectsdeviceperformanceà Results:8mL/15sec=0.53mL/ssuctionrate

Duetotheincreasedviscosity,pressurebuiltintheventurithatwasenoughtodriveliquidthroughtheairtubingtothefootpedalLiquidwasfoundcomingoutofthe3rdconnectionspotfromthepedal

Conclusions: Whilethepump hadnoissuessuctioningwater,increasedviscosityledtobackflowandpressurebuildup.Therefore,werecommend thedevicebeusedforbasicdentalproceduresinvolvingminimalbloodratherthanmajorprocedures.