We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App


ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.
09 Dec 2022 - 11 Dec 2022

Nonlinear Ultrasound Could Give Medical Needles New Enhanced Functions in Minimally Invasive Surgeries

By HospiMedica International staff writers
Posted on 07 Oct 2022
Print article
Image: A study looks at how nonlinear ultrasound can be used to create vibrations in an ordinary medical needle (Photo courtesy of Aalto University)
Image: A study looks at how nonlinear ultrasound can be used to create vibrations in an ordinary medical needle (Photo courtesy of Aalto University)

The diagnosis of diseases like cancer almost always needs a biopsy – a procedure where a clinician removes a piece of suspect tissue from the body to examine it, typically under a microscope. Many areas of diagnostic medicine, especially cancer management, have seen huge advances in technology, with genetic sequencing, molecular biology and artificial intelligence all rapidly increasing doctors' ability to work out what’s wrong with a patient. However the technology of medical needles hasn’t changed dramatically in 150 years, and – in the context of cancer management – needles are struggling to provide adequate tissue samples for new diagnostic techniques. Previously, researchers had shown that modifying the biopsy needle to vibrate rapidly at 30,000 times per second not only provides sufficient data for 21st century diagnostic needs, but is also potentially less painful and less traumatic for patients. Now, new research explores if nonlinear ultrasound can be used to overcome the limitations of currently used medical needles, such as the pain experienced by patients, inaccuracy and variable quality of needle biopsy samples.

Using computer models and experimental studies, the researchers at Aalto University (Espoo, Finland) were able to show that oscillations of the needle caused a number of non-linear acoustic phenomena. These include cavitation, the sudden expansion and collapse of air bubbles; the formation of acoustically driven fluid flows; acoustic radiation force, the force exerted by an ultrasonic wave on an object; and the formation of micro-droplets.

“In this study, we used needles to generate transverse-like motions at 30 kHz. This allows the acoustic energy to be amplified towards the needle tip, exactly where the effect is needed. This localized ultrasound energy can be used in a variety of applications, such as improving the quality of needle biopsy samples,” said Professor Heikki Nieminen, who is leading the project. “The investigated approach has the potential to give conventional medical needles new enhanced functions in medical applications not only in needle biopsy but also in drug or gene delivery, cell stimulation, and minimally invasive surgical procedures.”

Related Links:
Aalto University 

BMP Whole Blood Analyzer: GEM Premier ChemSTAT
Gold Supplier
ESR Analyzer
Electronic Pipette
Eppendorf Xplorer/ Eppendorf Xplorer plus
Automated Nucleic Acid Extraction Instrument

Print article



view channel
Image: AI transforms smartwatch ECG signals into a diagnostic tool for heart failure (Photo courtesy of Pexels)

AI-Based Smartwatch Accurately Detects Heart Failure Using ECG Signals

People with a weak heart pump might not have symptoms, but this common form of heart disease affects about 2% of the population and 9% of people over 60. When the heart cannot pump enough oxygen-rich blood,... Read more

Critical Care

view channel
Image: Quantra Hemostasis Analyzer (Photo courtesy of HemoSonics)

Next-Gen POC Whole Blood Hemostasis System Recognizes Specific Needs of EDs and ORs

Current hemostatic tests provide only a subset of needed information, or take too long to be useful in critical bleeding situations, forcing clinicians to use iterative transfusion protocols that do not... Read more

Patient Care

view channel
Image: Automated cleaning system allows endoscopes to be cleaned direct from clinic (Photo courtesy of Aston University)

World’s First Automated Endoscope Cleaner Fights Antimicrobial Resistance

Endoscopes are long, thin tubes with a light and camera at one end. Due to the sensitivity of the materials and electronics they cannot be sterilized in an autoclave (a machine that uses steam under pressure),... Read more

Health IT

view channel
Image: Using digital data can improve health outcomes (Photo courtesy of Unsplash)

Electronic Health Records May Be Key to Improving Patient Care, Study Finds

When a patient gets transferred from a hospital to a nearby specialist or rehabilitation facility, it is often difficult for personnel at the new facility to access the patient’s electronic health records... Read more


view channel
Image: The global multiparameter patient monitoring systems market is expected to surpass USD 15 billion by 2028 (Photo courtesy of Unsplash)

Global Multiparameter Patient Monitoring Systems Market Driven by Rising Chronic Illnesses

Multi-parameter patient monitoring equipment is used to assess the vital signs of patients who are suffering from a serious illness. These devices are meant to give the number of data sets on one screen... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.