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The Kensey catheter: preliminary results with a transluminal atherectomy tool
S O Snyder1, J R Wheeler, R T Gregory
1Department of Surgery, Eastern Virginia Medical School, Norfolk.
Insights
The Kensey dynamic angioplasty instrument effectively treated superficial femoral artery stenosis in patients with peripheral artery disease. This innovative atherectomy device showed promise for improving arterial lumen diameter.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Medical Devices
Background:
- Peripheral artery disease (PAD) significantly impacts lower limb circulation.
- Femoral artery stenosis and occlusion are common manifestations of PAD.
- Atherectomy devices offer minimally invasive treatment options for PAD.
Purpose of the Study:
- To evaluate the efficacy and technical feasibility of the Kensey dynamic angioplasty instrument.
- To assess the Kensey catheter's ability to recanalize stenotic and occluded superficial femoral arteries.
- To report preliminary short-term outcomes of this novel vascular tool.
Main Methods:
- A prospective study involving 20 patients with femoral arteriosclerotic occlusive disease.
- Attempted transluminal endarterectomy using the Kensey catheter on 23 extremities.
- Utilized balloon angioplasty as an adjunct in successful recanalization cases.
Main Results:
- Significant improvement in superficial femoral artery lumen diameter in 10 of 13 stenotic cases.
- Successful passage of the Kensey catheter through occluded segments in 4 of 10 cases.
- Adjunctive balloon dilatation increased lumen diameter in 11 of 14 successful procedures.
Conclusions:
- The Kensey dynamic angioplasty instrument is a viable option for treating superficial femoral artery stenosis.
- The device demonstrated technical success in recanalizing arterial obstructions.
- Further investigation is warranted to establish long-term efficacy and safety profiles.
Abstract:
The Kensey dynamic angioplasty instrument is an atherectomy device approved by the Food and Drug Administration that uses a rotating cam tip housed within a flexible polyurethane catheter to recanalize obstructed and stenotic arteries. Twenty patients with significant femoral arteriosclerotic occlusive disease underwent attempted transluminal endarterectomy of 23 extremities with the Kensey catheter. Significant improvements of superficial femoral artery luminal diameter was achieved in 10 of 13 patients with stenosis and passage of the spinning catheter tip at 60,000 to 90,000 rpm through areas of complete occlusion was successful in 4 of 10 cases. Balloon dilatation was used as an adjunct to increase the diameter of the superficial femoral artery lumen in 11 of 14 successful cases. This preliminary report provides technical data and short-term follow-up of this new innovative vascular tool.