Medical Device Specialization

Whether designing and producing a stent delivery system or balloon catheters, Quasar Medical’s streamlined assembly and automated processes deliver customized solutions for every project. Through strong partnerships with our clients, we ensure that manufacturing technology and capacity are never an obstacle to the success of your device. Our engineering services ensure a design-for-manufacturability (DFM) approach, keeping production efficiencies and cost reductions in mind with every product. Applications of Interventional Cardiology Cardiac catheterization: A diagnostic test for determining the presence of plaque, the strength of heart muscles, and heart valve functioning.Percutaneous coronary intervention (PCI): Technique used for restoring blood flow through an artery.Atherectomy: Hardened blockages are removed using various tools during catheterization; stenting may also be done.Patent foramen Ovale Closure: An innovative catheter-based procedure that can replace open-heart surgery in infants. Coronary artery diseases stem from a number of causative factors. Those who have developed a coronary artery disease tend to choose non-invasive or minimally invasive treatment methods that fall under the umbrella of interventional cardiology (IC). IC basically involves the use of catheters in the diagnosis and treatment of various coronary artery diseases: angina, arrhythmias, myocardial infarction (heart attack), and many more.  Such minimally invasive procedures significantly reduce patient risk while ensuring precise delivery of the  treatment within the heart.  Open-heart procedures, on the other hand, are much harder to recover from and can cause issues with other healthy parts within the body and the heart. The catheter is a narrow tube, with a diameter as small as1/10th that of a human hair, capable of carrying and delivering medical treatments to the heart. When an artery has been narrowed or blocked, a balloon catheter is commonly used. This is known as angioplasty (a.k.a., percutaneous transluminal angioplasty or balloon angioplasty).  Catheters may also have a sheath for protection; a drug-delivery tip for delivering contrast dyes or medicines within the artery; a balloon that can be precisely controlled by the interventional cardiologist; or carry bio-sensors for determining blood flow, pressure, temperature, and the internal anatomy of the arteries. Balloon catheters can even be used to deliver and place a stent in the affected vessel following an abrasive procedure (atherectomy). Precise control over the functioning of the balloon and a pulverizing tip—to remove plaque, deliver drugs, perform imaging, etc.—is mandated for any good IC device brand. During an IC procedure, if a balloon tip takes too long to expand or a catheter tube…

Structural heart (SH) disease deals with a group of non-coronary heart diseases that affect the structure of the heart, such as a malfunctioning of the valves, septal defects, holes in the heart, or other defects. SH disease may be a result of congenital defects, wear and tear, or other heart conditions. SH cardiology has been evolving over the last half-century, as a sub-specialty of interventional cardiology (IC).  Diagnosis of SH diseases is only possible through imaging techniques such as an echocardiogram, MRI, chest X-ray, or an electrocardiogram. Treatments that use implants and catheter-based procedures rely heavily on: Device quality and precisionExpertise of the SH cardiologist Although SH diseases are uncommon, there are various types of conditions that are considered structural heart conditions. Conditions that can be treated with a percutaneous transcatheter occlusion device, tailored for each condition, include: Atrial septal defect (ASD): There are many variations of ASD, but most are treated through surgery or by percutaneous closure, which can close defective openings in the atrial septum.Patent foramen ovale (PFO): The foramen ovale (an opening between the right and left atrium) facilitates blood flow during the embryonic stages of life, and should normally close soon after birth.Ventricular septal defects (VSD): These defects in the membrane of the ventricular septum or muscles in this region are treated using transcatheter closure devices, which has been found to be more successful than classic surgical closure.Patent ductus arteriosus (PDA): PDA allows for the passage of blood from the pulmonary artery into the aorta during embryonic life;defects in the closure of the passage post-birth must be treated immediately to prevent an enlarged heart.Left atrial appendage (LAA): Blood clots formed in the LAA region cause thromboembolism; clogging the site can prevent clot formation.Paravalvular leak (PVL): This results from leaks in prosthetic valves or implanted rings.Post-MI ventricular septal rupture: Ruptures caused by MI surgery can be closed using an occlusion device.Hypertrophic obstructive cardiomyopathy (HOCM): Apart from surgery and medications, a catheter-based treatment called percutaneous transluminal septal myocardial ablation can be performed. Conditions that can be treated with an implant placed percutaneously (i.e., delivered by a specialized catheter through the skin) include: Left ventricular aneurysm: The aneurysm causes muscle damage; an implanted device is used to separate the damaged muscle from healthy tissue.Valvular heart disease: Including mitral stenosis and regurgitation (treated with a clip implant), aortic stenosis (performing a valve replacement) can be treated with percutaneous devices specific…

 key when designing and producing neurovascular devices. For over 30 years, Quasar has specialized in sub-micron manufacturing, supported by a highly-skilled operations team and processes engineered to deliver finished products with detailed-oriented targets. From prototyping to mass production, Quasar offers full turnkey solutions to ensure the reliability and optimal performance of your device. Interventional neurology typically treats disorders such as: Ischemic strokes: Caused by clots in one or more of the brain’s vasculature. Cerebral aneurysms: An enlarged or bulging artery or capillary within the brain. Arteriovenous malformation: Defective group of arteries and veins resulting in a disruption in the blood flow and oxygen supply to the brain. Fistulas: An abnormal connection of blood vessels within or around the brain, resulting in diminished or lack of nutrient supply to local brain cells. Other NV Diseases Interventional neurology (IN) deals with the diagnosis and treatment of neurovascular (NV) disorders, i.e., concerning the brain and central nervous system (CNS). Devices typically used in IN include endovascular catheters that are function-specific, angiography, and fluoroscopy. The brain is the most perfused organ in the human body, requiring 25% of the body’s oxygen intake. Because the brain lacks the means for storing oxygen and glucose, any imbalance in the brain is a medical emergency. Thus, any impediment or disorder that causes a blockage or an imbalance in blood flow must be removed immediately. Interventional neurology devices include :  Coil Embolization Devices: These are used to treat aneurysms (a bulging artery or capillary) within the brain. A steerable microcatheter with a maximum thickness of 1.5Fr is used to deliver a filling glue, mesh stent, or platinum wire that coils and is released at the site. Any one of these processes helps prevent the rupture of the aneurysm. Cerebral balloon angioplasty: The catheter tip is an expandable balloon for removing blockages or creating an occlusion that prevents rupture of the blood vessel. The balloon is controlled by the neurologist and can expand under high or mid-level pressure, in which case balloons are made from polyester or complex polyurethanes. The balloon may even be required to expand up to 8 times its normal size, i.e., highly flexible in nature and hence made from silicone or another increasingly popular choice: Nitinol (shape memory alloy, SMA). Stenting systems: Neurovascular stents require a much finer design and construction, and need to be far more flexible and elastic than cardiovascular stents. Shape memory…

Electronic medical devices require a high level of research and engineering expertise to develop new devices and techniques for electronic device manufacturing. In addition, neurological treatment devices used in neurological treatments must meet superior biocompatibility and quality standards. Quasar’s specialty in micro-assembly and our extensive experience with designing new and improved products, as well as mass-producing them via novel techniques is unmatched. Applications for Neurostimulation Chronic painParalysisNeural prostheticsNeurological disorders such as Alzheimer’s disease, Parkinson’s, epilepsy, and sleep apnea  Electronics are now the norm in medical devices including pacemakers, battery-operated mechanical pumps, etc. Breakthrough innovations have paved the way for the use of micro-electronic devices capable of providing life-saving treatment for many who suffer from irreversible chronic conditions. Neurostimulation (NS) involves both invasive and minimally invasive methods of providing electrical stimulation to target locations around the brain and spinal cord. Pain-sensing can be redirected using electrical impulses that impede the pain signal as it travels to the brain, thus misleading the brain into not sensing the pain caused by various chronic disease conditions. Other neurological conditions such as depression, epilepsy, Parkinson’s, and Alzheimer’s are the result of misfiring neurons and malfunctioning neurological tissues. Interventional therapy using neurostimulation systems are increasingly used to alleviate symptoms that are otherwise unresponsive to other treatments. Non-invasive techniques include: Transcranial electrical stimulation: This uses either transcranial direct current stimulation (tDCS) or transcranial current stimulation (tACS) through a device that can be worn outside or subcutaneously, i.e., under the skin in the abdomen or any other location. The device is made from biomedical grade materials, contains a battery, and has one or more insulated leads that deliver the electrical stimulation to the desired location, such as the epidural space near the spine or brain. Placing the leads in precise locations is critical, especially when employing tDCS devices. Transcranial magnetic stimulation (TMS): These wearable devices deliver high-intensity magnetic pulses that produce neuromodulatory effects on the brain. Magnetic coils are used to generate magnetic pulses. By varying the frequency of the pulses, the level of excitability in the brain can be modulated. Conditions such as chronic pain, mobility-related conditions, epilepsy, and stroke can be treated with such devices. Low intensity focused ultrasound: This delivers ultrasound to the brain to treat movement disorders. While the device has received the CE mark, FDA approval is still pending. In order to manufacture electrodes to be implanted subcutaneously within a patient’s body, it…