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6. Remove the tip retention stylet from the catheter.
WARNING: Failure to remove the stylet prior to removing the microcatheter from
the microcatheter holder may damage the catheter.
7. Attach a syringe filled with heparinized saline solution or sterile water to the hub
of the microcatheter.
8. Inject enough solution to purge any air from the inside of the microcatheter.
9. Remove the microcatheter from the microcatheter holder.
NOTE: The surface of the microcatheter may become dry after removal from the
microcatheter holder. Additional wetting with heparinized saline or sterile water
will renew the hydrophilic effect.
10. Upon removal of the microcatheter from the microcatheter holder, inspect the
microcatheter to verify there is no damage prior to insertion.
11. If desired, attach a second hemostasis valve with side-arm adapter to the
microcatheter, flush with heparinized saline or sterile water to purge any air.
12. Carefully insert guide wire into the microcatheter and completely close the valve (if
used) around the guide wire.
13. Introduce the microcatheter and guide wire assembly into the guiding catheter
via the hemostasis valve (if used). If a rotating hemostatic valve is used, tighten the
valve around the microcatheter to prevent backflow, but allowing some movement
through the valve by the microcatheter.
14. Using fluoroscopy, introduce the microcatheter and guide wire assembly into the
vascular system, making sure the guide wire is always ahead of the microcatheter.
Advance the guide wire and microcatheter to a selected vascular site by
alternatively advancing the guide wire and then tracking the microcatheter over
the guide wire. Note: To facilitate microcatheter handling, the proximal portion of
the microcatheter is uncoated to ensure a non-slip grip.
15. Final positioning is accomplished by short advances of the guide wire and
microcatheter until the desired position is achieved and then confirmed by
fluoroscopic visualization.
16. Monitor microcatheter placement and position during use.
17. To infuse, completely remove the guide wire from the microcatheter. Connect a
syringe with infusate to the microcatheter luer, and infuse as required.
INSTRUCTION FOR USING A POWER INJECTOR WITH THE MICROCATHETER
A power injector can be used to infuse a contrast media through the microcatheter.
Observe the warnings and cautions given above. The flow rate depends upon such factors
as the viscosity of the contrast media, which varies with the type and temperature of the
media, the model and setting of the power injector, and how the injector is connected to
the microcatheter. The observed flow rate values indicated below are for reference only.
Table 2: Flow Rates
Merit
Usable
Contrast
Iodine
Viscosity
Pursue
Length
Media
Content
(cP) at
Microcath-
(cm)
(mg/mL)
37°C
eter Size
Shaft/Tip
2.8F/1.7F
110
ISOVUE
300
(Iopamidol)
370
130
ISOVUE
300
(Iopamidol)
370
150
ISOVUE
300
(Iopamidol)
370
2.9F/2.0F
110
ISOVUE
300
(Iopamidol)
370
130
ISOVUE
300
(Iopamidol)
370
150
ISOVUE
300
(Iopamidol)
370
REFERENCE DATA
1. Injector used: MEDRAD MARK V
2. Contrast Media temperature: 37°C
3. Injection pressure monitor/ limit setting: 5515 kPa (800 psi)
4. Flow scale: mL/sec
5. Linear rise seconds: 0.3 sec.
MEDRAD Flow Setting
Actual
Dead
Conditions With Linear
Contrast
Space
Rise @ 0.3 Sec
Delivery
(Priming)
mL/Sec
Volume
with
(mL)
Safety
pressure
Setting
of:
Flow Rate
Volume
5515 kPa
(mL/Sec)
(mL)
(800 psi)
4.7
6.0
10
3.0
0.42
3.0
10
1.5
9.4
4.7
6.0
10
2.6
0.50
9.4
3.0
10
1.3
4.7
6.0
10
2.4
0.53
9.4
3.0
10
1.2
4.7
6.0
10
4.3
0.50
9.4
3.0
10
2.4
4.7
6.0
10
3.9
0.57
9.4
3.0
10
2.0
4.7
6.0
10
3.7
0.63
9.4
3.0
10
1.9
Symbol
Designation
Caution: Federal (USA) law restricts this device to sale by or on the
order of a physician.
Caution: Consult accompanying documents.
Read instructions prior to use.
Do not use if package is damaged
Non-pyrogenic
Maximum diameter guide wire
Maximum pressure
Sterilized using Ethylene Oxide
Radiopaque marker
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