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Stop Arrhythmias
CHOSE
THE GENTLE POWER OF CRYOTHRAPY FOR CARDIAC SURGERY
Cardiac Cryo Ablation
C.A. 2001 T.B.T
Cryotechnique has been used
in arrhytmia surgery in various contexts such
as WPW, AV-nodal re-entry, and VENTRICULAR TACHYCARDIA
and is also a component in the Cox Maze III procedure.
Recent medico-technical advances have opened up
new fields for the use in areas where cryotechnique
concurs with heat-producing energy sources with
similar efficacy. Variable probes producing low
temperature has been developed, creating linear
cryolines, which makes ablation for atrial fibrillation
(AF) fast and easy. |
C.A.2001T.B.T- A VERSATILE CHOICE
1) Rapid freeze and quick
defrost. Foot control provision.
2) Tips (probes) may be autoclaved (uptil +134C°)
and cryopencil assembly can be chemically disinfected
(Cidex or Habitane).
3) Effective for Maze and lone AF procedures.
4) Or in conjunction with many different procedures,
including: CABG, Mitral Valves Congenital.
5) Perfect for various cardiac access incisions,
including: full median sternotomy small sternal
incisions and thoracotomy. |
CRYOABLATION-KEY ATTRIBUTES
-Intact endothelium significantly
reduces likelihood of thrombus(2)
-Collagen matrix remains intact(2)
-Cryoablation has the potential of avoiding stenosis
of the pulmonary veins(PV)(4)
-The use of power sources other than radio frequency
(RF) appears to greatly reduce, or perhaps ! eliminate,
the risk of PV stenosis(4) |
Mechanism of Analgesia
Cryoablation
Induces necrosis of myocardial fibers but spares
the collagenous framework.
The chronic scar is made of dense fibrotic tissue
that has no tendency to rupture or dilate.(5)
C.A.2001 T.B. T
- AN EFFECTIVE CHOICE
-Cryoablation has been used effectively
as part of the Maze procedure for AF treatment
.(6)
-"Most of the incisions originally performed
as a part of the Maze-111 procedure have been
replaced by cryolesions ."(3)
-Short ablation times .
-Transmural linear lesions can be produced in
an open heart , or on a closed beating heart .,
Universal laboratory experiences with the left
atrial isolation procedure and with the experimental
Maze procedure confirmed that the only sure way
to , interrupt conduction along the coronary sinus
is to cryoablate it.(6)
Universal laboratory experiences with the left
atrial isolation procedure and with the experimental
Maze procedure confirmed that the only sure way
to , interrupt conduction along the coronary sinus
is to cryoablate it.(6)
C.A.2001T.B. T -CHOICE FEATURES
-4mm diameter, 60mm long cryoablation
probe.(long sabre probe)
-4mm diameter, 30mm long cryoablation probe.(short
sabre probe)
-Bottle- like probe 20mm long 3mm Top: cryoablation
probe
-Cardiac T -shape cryoablation probe (T.H.D probe)
with Contact freezing surface long: 30mm
C.A.2001T.B.T-A
UNIQELYSAFE CHOICE
-Cryoablation preserves tissue integrity(1)
-Minimizes risk of endocardial thrombus associated
with heat-based energy sources(2)
-"Cryothermal tissue injury is distinguished
from hyperthermic injury by the preservation of
basic underlying tissue architecture and minimal
thrombus formation ."
-Multifarious probes with adjustable insulation
sleeve shaft allow for accurate ( lesion placement,
minimizing unwanted tissue damage.
-Tip adheres to target site when freezing begins,
for precise lesion positioning on a beating heart.
-Cryoablation can be used as part of the Maze
procedure.(3) |
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Notes Concerning work with C.A. 2001
T.B.T
 |
Always apply warm cryoprobes tip, this ensures
good (( cryotip-tissue )) contact and adhesion to
the tissues surface. |
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C.A.2001T.B.T ensures rewarming of the cryotip
in 2 to 5 seconds. |
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The part between the handle and the tip remains
warm and make it safe for surrounding tissues and
eliminate the need of external protection. |
Technical Data:
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Non electrical: All procedures are
controlled only pneumatically. |
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Cooling agent: N20 in steel, pressure
cylinders, net weight about 8 kgr. |
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Working cylce pressure: 600 900 psi
|
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Minimal temperature of the cryoprobes
tip = -60C° |
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Wide range of interchangeable probes
allows for versatile procedure application. |
Weight
of the device:
Without N2O cylinder: weight of device +options
= 5800+200gr
weight of device +options with package
= 8000+200gr
With full the cylinder: 21000gr
Dimension
:
height: 85 mm
width: 180 mm
depth: 340 mm |
Accessories: pin index yoke
for N20 cylinder, also Golf Trolly for transport of 8
kgr type F gas cylinder is available.
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Ref
1. Lustgarten D et al Cryothermal
Ablation: Mechanism of Tissue Injury and Current Experience
in the treatment of Tachyarrhythmias. Progress in
Cardiovascular Diseases, Voi. 41, No.6, May/june 1999:
P.481 -498.
2. Dubuc M, Tanguay J-F, Sirois MG, et al. CryoAblation
Produces Lee Endocardial Thrombus than RF Ablation.
Montreal Heart , Institute, AHA 2001.
3. Cox JL et al. Cvrrent Status of the Maze Procedure
for the Treatment of Atrial Fibrillation. Seminars
in Thoracic and Cardiovascular Surgery, Vol.12, No.
1 (Janvary), 2000:p. 15 - 19.
4. Cole C et al. Atrial Fibrillation Ablation; Which
Approach Is Best- Linear, Focal, Segmental or Circumfrential?
Heart Forum, Nov. 10, 2000.
5. Guiraudon GM et al, Encircling endocardial crypablation
for ventricular tachycardia after myocardial infarction.
Experience with 33 patients. American Heart journal,
November 1994:p. 982 -939.
6. Cox JL, Ad N. The Importance of Cryoablatlon of
the Coronary Sinus During the Maze Procedure. Seminars
in Thoracic and Cardiovascular Surgery, Voi. 12, No.1
(January 2000): p. 20- 24.
7. First Quarterly Seminar on Cardiac Surgery Surgical
Treatment of Atrial Fibrillation, Friday 27th February,
2004, Shahid Rajaie
Cardio Vascular Medical Center, Tehran,lran.
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