Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
What Clinical Problem Does Atherectomy Address?
Some peripheral arterial lesions, particularly those with significant calcification, do not respond adequately to standard balloon dilation. Calcified plaque can resist the outward pressure of a balloon, leading to suboptimal luminal gain, higher inflation pressures, or an increased risk of vessel dissection. Atherectomy devices like TemREN are designed to physically remove or modify this plaque, which is intended to improve the vessel's response to subsequent angioplasty, drug-coated balloon therapy, or stent placement.
How Does the TemREN System Work?
The TemREN Peripheral Atherectomy System uses a high-speed rotating mechanism to mechanically abrade and remove hard, calcified plaque from the arterial wall. By debulking this plaque before or in conjunction with balloon dilation, physicians may achieve improved luminal expansion with lower inflation pressures compared to angioplasty performed on an unprepared, heavily calcified lesion. This vessel-preparation role is a key distinction from angioplasty and stenting, which modify the arterial lumen without removing tissue.
Where Is Atherectomy Typically Used in PAD Treatment?
Atherectomy is generally considered as part of a broader treatment strategy rather than a standalone therapy. It is commonly used in:
- Heavily calcified femoropopliteal lesions
- Select below-the-knee (infrapopliteal) lesions where vessel preparation may improve subsequent balloon or drug-delivery performance
- Cases where standard balloon angioplasty alone has produced a suboptimal result
The decision to use atherectomy, and the specific technique selected, depends on lesion characteristics, calcification pattern, and the treating physician's clinical judgment based on preprocedural imaging.
How Does TemREN Fit With Other INVAMED PAD Devices?
TemREN is designed to complement INVAMED's broader peripheral arterial disease portfolio. After vessel preparation with TemREN, physicians may proceed with a PTA balloon catheter, a drug-coated balloon such as the Extender Drug PTA Balloon Catheter, or a self-expanding nitinol stent such as the Atlas Peripheral Stent System, depending on the lesion and treatment goals. Some published discussions of combined atherectomy and drug-coated balloon use in lower extremity arteries have reported favorable technical success rates in appropriately selected lesions, underscoring the rationale for a vessel-preparation-first approach in calcified disease.
What Should Clinicians Consider When Selecting Atherectomy?
As with all PAD interventions, atherectomy carries procedural risks, including the potential for vessel injury, distal embolization of plaque debris, or perforation, and is not appropriate for every lesion type. Physicians evaluate lesion morphology, calcification severity, and vessel diameter carefully before selecting an atherectomy-based strategy, and always weigh these risks against expected benefit for the individual patient.
Frequently Asked Questions
When is atherectomy preferred over balloon angioplasty alone?
Atherectomy is generally considered for heavily calcified lesions that are unlikely to respond adequately to balloon dilation alone. The treating physician determines this based on preprocedural imaging findings and lesion characteristics.
Is atherectomy used instead of stenting?
Atherectomy and stenting serve different roles — atherectomy removes or modifies plaque, while stenting provides structural scaffolding. The two approaches are often used together in a staged fashion, with atherectomy performed first to prepare the vessel.
What types of peripheral lesions is TemREN designed for?
TemREN is designed for calcified peripheral arterial lesions where plaque debulking may improve outcomes of subsequent balloon or stent-based therapy. Suitability for a specific lesion is determined by the treating physician based on individual imaging and clinical findings.
Related INVAMED Resources
- Peripheral Arterial Disease (PAD) Products
- Extender Drug PTA Balloon Catheter
- Contact INVAMED for More Information
Medical Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendation. It is not a substitute for consultation with a qualified healthcare professional. Product indications, availability, and regulatory status vary by country. Always refer to the official Instructions for Use (IFU) and consult a licensed physician for guidance specific to your situation. INVAMED devices are intended for use by trained healthcare professionals.