injuries during pregnancy tracking & understanding the hidden epidemic
DESCRIPTION
AMCHP 2005 Conference. Injuries During Pregnancy Tracking & Understanding the Hidden Epidemic. Hank Weiss PhD, Associate Professor Center for Injury Research and Control University of Pittsburgh. Pregnant women NOT wearing seatbelts 3 times more likely to experience fetal death. - PowerPoint PPT PresentationTRANSCRIPT
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Injuries During PregnancyTracking & Understanding
the Hidden Epidemic
Hank Weiss PhD, Associate ProfessorCenter for Injury Research and Control
University of Pittsburgh
AMCHP 2005 Conference
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Hank Weiss, Center for Injury Research & Control
Leading Cause of Maternal Injury
Maternal and Fetal Maternal and Fetal Deaths = MVDeaths = MV
Hospitalizations = MVHospitalizations = MV
ED Visits = MVED Visits = MV
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Pregnant women NOT wearing seatbelts
3times more likely to experience fetal death
HydeHyde et al (ObGyn, 2003): Effect of motor vehicle crashes on birth & fetal outcomes in Utah et al (ObGyn, 2003): Effect of motor vehicle crashes on birth & fetal outcomes in Utah
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Hank Weiss, Center for Injury Research & Control
Traumatic Fetal DeathsBy MechanismSelected States, 1995-1997
Weiss et al , JAMA, 2001, October 17;286(15):1862-1868
MV82%
Fall3%
Firearm6%
Other9%
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H a n k W e i s s , C e n t e r f o r I n j u r y R e s e a r c h & C o n t r o l
F e t a l C r a s h D e a t h C o m p a r i s o n s , 1 9 9 8
0 2 0 0 4 0 0 6 0 0 8 0 0
L o w E s t i m a t e H i g h E s t i m a t e
1 2 5
1 7 9
1 9 0
~ 7 0 0
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Why Is This Happening?
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Seat Belt Syndrome• Sternum Fracture• Rib Fractures• Clavicle Fracture• Lung Injury• Heart Injury• Thoracic Aorta Injury• Bowel Perforation• Abdominal Aorta Injury• Spinal Injury• Pelvic Injury
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Risk of Fetal Death
With Lap & Shoulder Belt
16 mph 26%
22 mph 51%
28 mph 76%
34 mph 90%
Research Projections based on Computer Modeling
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Normal Pregnancy38 Weeks
Best Possible Case
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Normal Pregnancy38 Weeks
Best Possible CasePlacenta
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Normal Pregnancy38 Weeks
SUBMARINING
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L 1
L 2
DISC
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L 1
L 2
DISC
Wedge Shaped Fractures
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Risk To Fetus
5XRisk to 0 To 1 Year Old Sibling
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Lethal to the
FETUS&
MOTHER
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RequiredReaction Force
To Stop Submarining
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CurrentlyOnly 2 Ways To
Prevent Submarining
Crotch Strap - Pubis Load
Knee Impact - Femur Load
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Crotch Strap Load To Pubis
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Crotch Strap Load
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Lethal to the
FETUS
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Femur Load
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Femur Load Works(Knee Impact With Dashboard)
UnreliableToo Late
FMVSS 208 Sets Femur Load Limits
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USPTO
Prior Art
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RequiredReaction
Force
High Lap Belt Force
Directly IntoAbdomen
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High Lap Belt
No Pubis Contact
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Lap Belt Force
All Lap Belt ForceDirectly Into
FETUS
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Wide Lap Belt(Scoop Injury)
Crotch Strap
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Load ConcentrationOn Neck
Load Directly To Fetus
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Anything Below The Effective Lap Belt Level
That Does Not Contact The Pubis And Stabilize
The PelvisCan And Will Cause
SCOOPING INJURY
As The PelvisSubmarines
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Normal Pregnancy38 Weeks
Best Possible Case
Fetus Head
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Normal Pregnancy38 Weeks
SUBMARINING
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Fetus HeadAfter Submarining
Fetus HeadAt Start
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It’s EasyTo Get Into Trouble
In This BusinessUnless
You Know What You Are Doing
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Supplemental Automotive Restraint SystemFor
Pregnant Women(SARSPM)
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SARSPW
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SARSPW
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Solid Pubis Contact
1/2 To 1 Inch Free Space
Solid Chest Contact
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Solid PelvisContact
Left & RightIlium Contact
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SARSPW
Abdomen IsolatedFrom Belt Forces
Pelvis Stabilized(No Submarining)
Fetus SpaceNot Violated
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Device Claim 1 – (One Page Of Two)
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Device Claim 1 - (Page Two Of Two)
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Device Claims 2, 3, & 4.
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Device Claims 5 & 6