Medical Electronics Bring Care Closer to Patients

Posted by Jordan Yates on Jan 3, 2024 8:34:00 AM

Digital and connected healthcare methods are getting better and better at harnessing the full potential of today’s advanced medical technologies and popular consumer devices. This combination is evolving standard healthcare delivery for the digital age. While these technologies still pose privacy, security and access challenges, they’ve made significant strides. The vision of a less hospital-centric, and more patient-centric, system is starting to crystallize.

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Topics: Medical

Resonant Wireless Power Transfer in Implantable Medical Devices

Posted by Peter Matthews on Dec 6, 2023 8:15:00 AM

With the rising prevalence of cardiovascular, orthopedic, and other chronic conditions, and an increase in the number of patients needing care, the demand for implantable medical devices continues to increase. 

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Topics: Capacitor, Medical

Non-Magnetic Trimmer Capacitors for In-Suite or Portable MRI Machines

Posted by Jordan Yates on Nov 1, 2023 8:15:00 AM

MRI systems are so robust and require so much infrastructure that they need their own dedicated room—until recently.

A portable magnetic resonance imaging (MRI) system, or point of care (POC) MRI machine, is a compact, traveling device that’s designed for patient imaging outside of the traditional MRI suite (e.g., emergency rooms, ambulances, rural clinics, field hospitals, etc.)

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Topics: Capacitor, Medical

Introducing the MD Series of Medical-Grade Capacitors for Implantable Device Design

Posted by Victor Lu on Aug 30, 2023 8:30:00 AM

A medical device is considered “implantable” if it’s partly or totally introduced into the human body via surgery or another medical intervention, and it’s intended to stay there for a long period of time. According to the American Medical Association (AMA), approximately 10 percent of Americans will receive an implantable device during their lifetimes. To serve consistent, often life-sustaining functions, implantables require high-reliability components that guarantee long-term performance.

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Topics: Medical, High Reliability

Understanding the Role of Ceramic Capacitors in Implantable Deep Brain Stimulators

Posted by Jordan Yates on Jul 19, 2023 8:30:00 AM

A deep brain stimulator (DBS), also known as a neuro-stimulator, is a medical device that uses electrical stimulation to treat neurological disorders such as Parkinson's disease, essential tremor, dystonia, and obsessive-compulsive disorder (OCD). The DBS is typically implanted under the skin near the collarbone or in the abdomen, and connected to a thin wire, or lead, that runs under the skin to the targeted area of the brain as shown in Figure 1. 

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Topics: Capacitor, Medical

Selecting Capacitors for High-Voltage X-Ray Power Supplies

Posted by Jordan Yates on Apr 12, 2023 9:15:00 AM

As the backbone of the X-ray machine, X-ray tubes produce the radiation that generates the electromagnetic waves known as the “X-ray.” This is done by using a high voltage to accelerate the electrons released by a hot cathode to a high velocity. Those electrons then collide with the anode, which is a metal target usually made of tungsten. This process requires an input voltage typically ranging from 180 to 480 VAC with a power supply that transforms and steps up the voltage to extremely high voltage outputs ranging from 10kV and 120kV DC. A high-level diagram of the power supply required to power the X-ray tubes is shown in Figure 1. 

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Topics: Capacitor, Medical, Filtering

Supporting Medical Advancement at Knowles Precision Devices

Posted by Rich Bestafka on Mar 25, 2023 8:00:00 AM

At Knowles Precision Devices (KPD), we handle the specialty components that go in the systems that can’t quit. We have the extensive resources and subject matter knowledge to innovate around the technical and environmental challenges facing high-impact industries including military, aerospace, and beyond.

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Topics: Capacitor, News and Events, Medical, High Reliability

Selecting MLCCs that Meet the High-Reliability Requirements of Medical Implantable Devices

Posted by Victor Lu on Oct 26, 2022 8:45:00 AM

Designing medical implantable devices for high reliability is crucial for a variety of reasons. First, given the life-critical functions performed by many medial implantable devices, and the invasive procedure required to implant medical equipment properly in the human body, it is imperative that all medical devices are designed to function reliably throughout their entire lifetime. Furthermore, since patient safety is paramount, any precautions to reduce the possibility of potentially life-threatening malfunctions, recalls, and replacement surgeries are necessary. And, beyond preventing patient safety issues, there may also be severe economic and legal implications for device manufacturers if an implantable device fails.

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Topics: Capacitor, Medical, High Reliability

Trimmer Capacitor Considerations in Practice

Posted by Rich Bestafka on Sep 28, 2022 7:15:00 AM

Trimmer capacitors are variable components used to calibrate RF circuits during manufacturing or servicing. These components allow for variable tuning--think oscillator frequency values or rise and fall times. Should values drift over the life of the device, trimmer capacitors can be recalibrated as needed. For sensitive applications like magnetic resonance imaging (MRI), these components help to optimize performance where any instability in time or temperature could impact the image output.

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Topics: Capacitor, Medical

Meeting the Unique Design Requirements for Leadless Pacemaker Electrical Components

Posted by Jordan Yates on Aug 31, 2022 8:45:00 AM

Today, millions of people around the world rely on pacemakers to help regulate their heart’s rhythm. A traditional pacemaker usually consists of a pulse generator that is about the size of a tea bag and implanted under the skin near the collarbone, and a wire, or lead, that runs through a blood vessel to the heart. The end of the lead has an electrode on it that touches the heart wall to deliver electrical impulses. However, in the last decade, innovations in pacemaker technology have led to the introduction of a new style of pacemaker, known as the leadless pacemaker, that is about 1/10th the size of a traditional pacemaker, or about the size of a vitamin (Figure 1).

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Topics: Capacitor, Medical, High Reliability

Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of Compex, DLI, Johanson MFG, Novacap, Syfer and Voltronics, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

This Blog will provide insights into:

  • Filters for 5G and mmWave
  • Capacitors for High Voltage
  • Capacitors for High Reliability

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