Progress Seminar 2015.10.30 신희안.

Presentation on theme: "Progress Seminar 2015.10.30 신희안."— Presentation transcript:

1 Progress Seminar 신희안

2 연구 진행 상황 보고서 재난 대응 장비 인공 심폐기 어지럼증 심전도 신호처리 2주전 계획 연구 결과 문제점 및 대책
시나리오 수정 산소포화도 정리 회전판 제질 선택 Flow Chart 작성 중 문제점 및 대책 목표 및 계획 LCD 구동 펌프 성능 곡선 회로 구성 소자 선택 및 확정 월요일 첫 미팅

3 Heads And Plates

4 SAME EFFECTIVE AREA! Biopump Terumo Magnet Size of Heads
Inner Diameter: 30mm Outer Diameter: 70mm Inner Diameter: 31.72mm Outer Diameter: 70.28mm SAME EFFECTIVE AREA!

5 Magnet Strength of Plates
Stainless Plate Aluminum Plate Bio Pump Plate 4200 Gauss 5000 Gauss 1600 Gauss

6 Magnet Strength of Plates
Terumo Bio Pump 서강대 550 Gauss 420 Gauss 800Gauss

7 Magnet Selection 자석 분포 불균등의 효과 감소 >도넛형태의 이유? 2t (1600~1800Gauss), 5t (3600~3800Gauss), 10t (4800~5000Gauss)

8 Magnet Selection 판 두께 변경 2t 5t 10t 2 5t

9 Plate Material Selection
Stainless 420 Permeability: 950 Stainless: High Durability

10 SvO2 Measurement

11 Pulmonary Artery Pulmonary Artery
All blood “mixed” after circulating “all” tissues in body

12 :Mixed Venous Oxygen Saturation
What is SvO2? :Mixed Venous Oxygen Saturation Oxygen Saturation of Pulmonary Artery Normal SvO2 = 60%~80% Average amount of oxygen remaining after all tissues oxygen consumption Determine the Cardiac Output & Oxygen Delivery

13 Pulsatile Oximeter Saturated Oxygen Concentration (SaO2)

14 Absorption Characteristics
Oxyhemoglobin VS Deoxyhemoglobin Two Variables -> Two Equations Red Light Infra Red Light

15 Absorption by TUBE & BLOOD (Absorption of TUBE known)
Pulsatile Oximeter Pulsatile Flow: Increases travel length of wavelength Increased Absorption (AC Component) Without Pulse: Almost no change of travel length Constant Absorption (DC Component) Artery Pulsatile Flow Absorption by TUBE & BLOOD (Absorption of TUBE known) Measures Saturated Oxygen Concentration (SaO2)

16 Invasive Measurements
Blood Sampling Fiber-optic Catheter Sample from Pulmonary Artery Error caused from sampling from unhomogenized blood Intermittent Relative O2 Concentration: Spectrophotometry + Measurement of Hematocrit Almost Continuous Invasive

17 Fiber-optic Catheter Transmitting Fiber Optic:
Transmit various wavelengths in red and infrared(Diode) Illuminate the blood Receiving Fiber Optic: Transmit reflected light to photodetector Light Intensity (cf. Pulsatile Oximeter)

18 Increased SvO2 indicates:
SvO2 Indications Increased SvO2 indicates: Increased O2 Delivery Decreased O2 Demand Decreased SvO2 indicates: Decreased O2 Delivery Decreased Hemoglobin Concentration Decreased SaO2 Not Enough Cardiac Output Increased O2 Demand

19 Non Invasive Measurement