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[PRODUCT DESCRIPTION]
Crosstella OTW is a Percutaneous Transluminal Angioplasty (PTA)
Balloon Dilatation Catheter for peripheral indications. Crosstella
OTW is an over the wire (OTW) type and the maximum diameter of
the compatible guidewire is 0.018 inches (0.46 mm).
The shaft consists of an outer tube and an inner tube ( co-axial
lumens structure). The outer lumen is used for inflation and deflation
of the balloon with contrast medium diluted with saline solution. The
inner lumen (the guidewire lumen; from the distal tip to the guidewire
port) is for inserting a compatible guidewire to facilitate advancing
the catheter through the stenotic lesion or stent to be dilated. Inside
the balloon, two radiopaque markers, which indicate the working
length of the balloon, are placed to guide the physician for
positioning the balloon properly in the targeted lesion under
fluoroscopy. Crosstella OTW is available in various balloon sizes by
its diameter and length at recommended inflation pressures
(Nominal pressure). Upon inflation, the balloon diameter varies
according to the inflating pressure. The balloon compliance chart of
Crosstella OTW is provided in Table 1 at the end of this Instructions
for Use. In the sterilization package, the device is equipped with the
protective materials, a balloon protective tube and a stylet, which
are to be removed before use. The balloon protective tube is placed
over the balloon folded in a low profile and the stylet is inserted into
the guidewire lumen to prevent collapsing the catheter shaft. The
catheter’s distal tip is tapered to facilitate the catheter’s advancing
into the stenotic lesion or stent.The surface of catheter is partially
coated with hydrophilic polymer coating which generates lubricity
when wet.
<NAME OF EACH PART>
Sterile and non pyrogenic in an undamaged and unopened blister
pouch. This device is sterilized by ethylene oxide.
Recommended guidewire diameter:
Maximum diameter: 0.018”(0.46 mm)
Recommended inflation pressure and maximum inflation pressure
Nominal pressure: 8atm
Rated burst pressure: 14atm
[INDICATIONS]
The Crosstella OTW PTA balloon dilatation catheter is intended to
dilate stenosis in the iliac, femoral, ilio-femoral, popliteal, infra-
popliteal and renal arteries, and for the treatment of obstructive
lesions of native or synthetic arteriovenous dialysis fistulae. This
device is also indicated for stent post-dilatation in the peripheral
vasculature.
Note: The verification test for stent post-dilatation of Crosstella OTW
was conducted using Complete
®
SE Vascular Stent System
(Medtronic, Inc), S.M.A.R.T.
®
CONTROL
®
Vascular Stent System
(Cordis Corporation).
[CONTRA-INDICATIONS]
1. Patients who have developed anastomotic stenosis within one
month after AV shunt construction.
2. Patients having lesions which communicate with a
pseudoaneurysm.
3. Patients who are pregnant.
4. Patients who cannot tolerate antiplatelet therapy or anticoagulant
therapy.
[WARNINGS AND PRECAUTIONS]
[Warnings]
1. This device is for single use only. Do not reuse. Do not resterilize.
Do not reprocess. Reprocessing may compromise the sterility, the
biocompatibility and the physical integrity of the device.
2. Do not use if the product or the unit packaging has been damaged.
3. Do not inflate the balloon exceeding the diameter of the blood
vessel proximal and distal to the stenotic lesion.
4. Do not inflate the balloon to a pressure exceeding the rated burst
pressure.
5. Do not use this catheter in the central circulatory system.
[Precautions related to procedures]
1. Do it carefully and slowly to remove this device out of the carrier
tube and to remove protection parts from this device, Careless
handling may damage the balloon and/or the catheter shaft of this
device to impare balloon inflation and/or deflation.
2. Inflate the balloon with the contrast medium diluted with saline in
the ratio of 1:1 (hereafter, inflation fluid). No gaseous medium such
as air should be used for inflation. (Balloon may be inflated
irregularly.)
3. Prior to use, expel all the air in the balloon and balloon inflation
lumen and replace it with the inflation fluid. (In case of incomplete
air removal, balloon inflation state can not be observed under
fluoroscopy.)
4. In case of serious stenotic lesions such as calcified lesions, the
blood vessel can not be dilated fully. Do not apply a pressure
exceeding the rated burst pressure in such a case. (The balloon
may burst and the debris may remain inside the body.)
5. As for the medical devices used in conjunction with this catheter,
follow the instructions for use of such devices. (When the balloon
catheter is used for post-dilatation of stent during peripheral stent
placement procedure, refer to the manufacturer’s instructions for
use.)
6. For insertion into stent, withdrawal from stent or in-stent dilatation of the
balloon, proceed with caution under fluoroscopy. (Doing so without
fluoroscopy may damage this catheter or injure the blood vessel.)
7. Do not attempt to pass the Crosstella OTW PTA balloon dilatation
catheter through a smaller sized introducer sheath than indicated
on the label. Refer to product labeling.
[Precautions during usage]
1. Use the device immediately after the sterile package is opened.
2. The entire procedure should be carried out aseptically.
3. This catheter should be used only by physicians skilled in
percutaneous vascular therapy.
4. Select the catheter with appropriate balloon size (balloon
diameter, balloon length) according to the following (procedures)
criteria.
1) The inflated balloon diameter shall not exceed the inner
vessel diameter proximal and distal to the lesion.
2) The length of the inflated balloon shall not exceed the
length of the lesion to be treated.
(Inappropriate catheter selection may lead to acute vascular
occlusion.)
5. Use this catheter only when emergency surgery can be
performed at any time.
ENGLISH
