Constant SDS (Stent Delivery System)
Stent Material
The main material used in this stent is 316LVM coded stainless steel. This material has been successfully utilized for many years as the main material in stent manufacturing and has been proven safe for human health.
Flexibility
CONSTANT stent is designed to provide high flexibility and optimum radial strength in reaching areas characterized by tortuous lesion.. It is more flexible than many of its contemporary counterparts [1].
Radial Strength
CONSTANT has a good radial strength stemming from its design and from the specification of its material.
Homogeneous Stent Expansion
The design of CONSTANT stent provides a homogeneous expansion which results in optimum vessel coverage
Recoil
Low recoil rate ensures accuracy in reaching the target nominal lesion diameter while decreasing restenosis rates
Minimal Foreshortening
Minimally foreshortened stent provides an appropriate and accurate placement which helps cover the lesion length precisely.
High-Quality Electro Polishing
High quality polishing of the stent decreases the potential risk rate of thrombosis and restenosis. [1].
Indication
CONSTANT stent is a new generation tubular stent with a broad indication, including bifurcation lesions and chronic occlusions [1].
Delivery System
HYDROMERTM HYDROPHILIC coated hypo-tube, proximal shaft and distal shaft provides low friction that enhances trackability and pushability. Low crossing profile provides an excellent lesion crossing.
Inner Lumen
Carbon reinforced inner lumen decreases the frictional force. Because of this feature the trackability of the guidewire used alongside this stent increases.
Conclusion
CONSTANT is a very flexible SDS (Stent Delivery System) with its optimum radial strength stemming from its specific design. It has high flexibility. The design is available for broad indications including bifurcation lesions and chronic occlusion.
REFERENCES
- N. Reifart, “Initial experience with the constant stent in stenotic coronary artery lesions”, Main Taunus Institute, Bad Soden, Germany.
- W. B. Hillegass, E. Magnus Ohman, R. M. Califf, “ Restenosis : The Clinical Issue”
- A. Colombo, “The Current Practice of Coronary Stenting”
Compliance Table
|
ATM |
2.5 mm |
2.75 mm |
3.0 mm |
||||
|
Inside |
Outside Diameter |
Inside |
Outside |
Inside |
Outside Diameter |
||
|
1.0 |
1.28 |
1.46 |
1.40 |
1.58 |
1.50 |
1.68 |
|
|
2.0 |
1.74 |
1.92 |
2.38 |
2.56 |
2.46 |
2.64 |
|
|
3.0 |
2.23 |
2.41 |
2.51 |
2.69 |
2.71 |
2.89 |
|
|
4.0 |
2.30 |
2.48 |
2.56 |
2.74 |
2.78 |
2.96 |
|
|
5.0 |
2.35 |
2.53 |
2.60 |
2.78 |
2.83 |
3.01 |
|
|
6.0 |
2.40 |
2.58 |
2.65 |
2.83 |
2.89 |
3.07 |
|
|
7.0 |
2.45 |
2.63 |
2.70 |
2.89 |
2.94 |
3.12 |
|
|
*8.0 |
2.50 |
2.68 |
2.75 |
2.93 |
3.00 |
3.18 |
|
|
9.0 |
2.55 |
2.73 |
2.80 |
2.98 |
3.04 |
3.22 |
|
|
10.0 |
2.58 |
2.76 |
2.83 |
3.01 |
3.07 |
3.25 |
|
|
11.0 |
2.62 |
2.80 |
2.87 |
3.05 |
3.10 |
3.28 |
|
|
12.0 |
2.65 |
2.83 |
2.90 |
3.08 |
3.14 |
3.32 |
|
|
13.0 |
2.67 |
2.85 |
2.93 |
3.11 |
3.16 |
3.34 |
|
|
14.0 |
2.70 |
2.88 |
2.96 |
3.14 |
3.19 |
3.37 |
|
|
15.0 |
2.72 |
2.90 |
2.98 |
3.16 |
3.22 |
3.40 |
|
|
**16.0 |
2.75 |
2.93 |
3.00 |
3.18 |
3.25 |
3.43 |
|
|
17.0 |
2.77 |
2.95 |
3.03 |
3.21 |
3.27 |
3.45 |
|
|
18.0 |
2.79 |
2.97 |
3.05 |
3.23 |
3.30 |
3.48 |
|
|
19.0 |
2.82 |
3.00 |
3.07 |
3.25 |
3.34 |
3.52 |
|
|
20.0 |
2.84 |
3.02 |
3.09 |
3.27 |
3.37 |
3.55 |
|
|
ATM |
3.5 mm |
4.0 mm |
||
|
Inside |
Outside Diameter |
Inside |
Outside |
|
|
1.0 |
1.60 |
1.78 |
1.70 |
1.88 |
|
2.0 |
2.75 |
2.93 |
3.00 |
3.18 |
|
3.0 |
3.07 |
3.25 |
3.25 |
3.43 |
|
4.0 |
3.26 |
3.44 |
3.55 |
3.73 |
|
5.0 |
3.38 |
3.56 |
3.70 |
3.88 |
|
6.0 |
3.44 |
3.62 |
3.82 |
4.00 |
|
7.0 |
3.47 |
3.65 |
3.91 |
4.09 |
|
*8.0 |
3.50 |
3.68 |
4.00 |
4.18 |
|
9.0 |
3.53 |
3.71 |
4.03 |
4.21 |
|
10.0 |
3.56 |
3.74 |
4.07 |
4.25 |
|
11.0 |
3.59 |
3.77 |
4.10 |
4.28 |
|
12.0 |
3.62 |
3.80 |
4.14 |
4.32 |
|
13.0 |
3.65 |
3.83 |
4.18 |
4.36 |
|
14.0 |
3.68 |
3.86 |
4.21 |
4.39 |
|
15.0 |
3.72 |
3.90 |
4.23 |
4.41 |
|
**16.0 |
3.75 |
3.93 |
4.25 |
4.43 |
|
17.0 |
3.76 |
3.94 |
4.32 |
4.50 |
|
18.0 |
3.79 |
3.97 |
4.35 |
4.53 |
|
19.0 |
3.81 |
3.99 |
4.38 |
4.56 |
|
20.0 |
3.84 |
4.02 |
4.40 |
4.58 |
*Nominal Pressure **Rated Burst Pressure
CE Certificate*
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