1. Showa University Fujigaoka Hospital
Long CTO Case Treated with Gaia Wire
Showa University Fujigaoka Hospital
Kohei Wakabayashi

2. Kohei Wakabayashi, MD, PhD
I/we have no real or apparent conflicts of interest to report.

3. specification/structure/performance
Gaia Wire
specification/structure/performance
Total Length 1900mm
Slip Coat Coating Length 400mm
Coil Length 150mm
0.014inch
PTFE
First：0.010inch
Second：0.011inch
Two types of wire
Diameter ：0.010　-　0.014”
Tip load ：1.5gf
Gaia First
Diameter ：0.011　-　0.014”
Tip load ：3.5gf
Gaia Second

4. specification/structure/performance
Gaia Wire
specification/structure/performance
straight
tapered
Gaia First
15mm
30mm
Gaia Second
6mm
30mm

5. 61 yrs, Male
# Congestive Heart Failure
# Stroke
# Dyslipidemia
# Chronic obstructive pulmonary disease
(former smoker 20 ｘ 30yrs)
The patient had dyspnea on effort from Sep, He was admitted because of stroke 6th, Oct. He also had congestive heart failure.

6. UCG LVEF 36%, LVDD 64mm inferior akinesis BNP 2220 pg/ml CTCA showed
(10/10/2012) diffuse hypokinesis
inferior akinesis
BNP 2220 pg/ml
CTCA showed

8. RCA #2 long CTO
LAD #6 90%
LCX #13 90%

9. PCI for long CTO
CABG

13. XT-R
Gaia-First
Gaia-Second
with Corsair

17. another day
LAD and LCX were treated with DES.
4 months later
UCG LVEF 47%
improved inferior asynergy
BNP < 400 pg/ml

18. Conventional CTO wires
Soft wire :
to find micro channel and cross
Hard wire :
to cross calcified lesion
When the lesion was not straight,
it was difficult to change the direction.

19. Confianza ○
Straight
Curved or winding Ｘ

20. But Gaia

21. Torque force GW
Test　Method

22. Initial torque response
/ 180° GW
CCW
R=3mm
13ページ

23. Tip Structure of Gaia wire Composite core : double coil structure
Double coil structure gives strong torque force with flexible tip.
Round core design close to tip suppresses whip.
Gaia First
Gaia Second
Ropecoil

24. Micro cone-tip To keep flexibility of tip and penetration force
Gaia micro-cone tip
To keep flexibility of tip and penetration force
0.010”　/　0.011”
Gaia micro-cone tip
Conventional wire tip

25. Different technique to cross CTO lesion
correct route
Rotation
Different technique to cross CTO lesion
Easy to change the direction and cross

26. Conclusion
Gaia, new generation wire,
may revolute CTO treatment.