6
How to Use
It is sterilized by gas sterilization with ethylene oxide before shipment.
This microcatheter can be used directly after opening the package following sterile procedures.
The microcatheter shall be selectively inserted in blood vessel over a guide wire.
<A> Instructions for use as an infusion catheter
1)
Take out the holder tube containing the microcatheter from the sterile pack.
2)
Inject the heparinized and sterilized saline into the holder tube through the flush connector by
using a syringe. Ensure the ejection of heparinized and sterilized saline from distal end of the
holder tube to make sure the holder tube is filled with heparized and sterilized saline.
3)
Remove the microcatheter from the holder tube, and check the surface of the microcatheter for
sufficient lubricity. If any resistance is felt when withdrawing the microcatheter from the holder
tube, inject additional heparinized and sterilized saline into the holder tube to lubricate the
microcatheter.
4)
Flush the lumen of the microcatheter removed from the holder tube with the heparinized and
sterilized saline by using a syringe. Fill the lumen of the microcatheter with the heparinized and
sterilized saline.
5)
Insert the appropriate guide wire (indicated on the label of product package) into the
microcatheter and advance carefully.
6)
Insert the guiding catheter into the patient’s blood vessel according to standard catheter
procedure.
7)
Insert the microcatheter and the guide wire as a unit into the guiding catheter, from its
hemostatic adaptor (Y-connector etc.), which is inserted in the patient’s vessel. Advance the
microcatheter and the guide wire until the distal end of the guiding catheter appears.
8)
After loosening the hemostasis valve of the Y-connector, if this product is hindered by a
stenosed area, and/or when enough guide wire support is not obtained, secure tightly both the
guide wire and the guiding catheter. Then, advance the microcatheter slowly along the guide
wire and observe the movement of the tip to determine if the tip passes through the stenosed
area.
9)
The user can rotate the device when inserting, withdrawing, and passing through stenotic areas.
However, do not turn the catheter in the same direction, either clockwise or counterclockwise,
for more than 10 consecutive turns. If the device is trapped or suspected to be trapped, rotating
operation must be avoided.
10)
Before injecting contrast medium, withdraw the guide wire. Connect a syringe to the connector
for injection of contrast medium.
11)
When thrombus adhesion is expected during the procedure, connect the hemostatic adaptor to
the connector of the microcatheter, and inject heparinized and sterilized saline from the port of
the hemostatic adaptor by using a syringe, or connect a pressured bag with heparinized and
sterilized saline for continuous drip to prevent thrombus from adhering to the microcatheter.
12)
After completing the procedure, withdraw the microcatheter immediately and discard.
<B> Instructions for use as a support catheter
1)
Take out the holder tube containing the microcatheter from the sterile pack.
2)
Inject the heparinized and sterilized saline into the holder tube through the flush connector by
using a syringe. Ensure the ejection of heparinized and sterilized saline from distal end of the
holder tube to make sure the holder tube is filled with heparized and sterilized saline.
3)
Insert a compatible guide wire (indicated for this microcatheter) through the connector and
bring the tip of the guide wire in line with the tip of this microcatheter. (If the guide wire is
inserted through the tip of this microcatheter, care should be taken not to cause any damage to
the microcatheter. Also, if the microcatheter is bent or kinked, discontinue its use. If the
microcatheter is kinked it may cause severe damage to the patient.)
