Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Star-shaped metal clip takes novel approach to closing artery punctures

12.09.2005


Bleeding stops in just 37 seconds



A metal clip that closes an arterial puncture by drawing the wound edges together like a drawstring stitch is proving an easy and effective way to speed patient recovery after coronary interventions, according to a study in the just-published October 2005 issue of Catheterization and Cardiovascular Interventions: Journal of the Society for Cardiovascular Angiography and Interventions.

The study--the first published report in humans--tested the safety and effectiveness of the StarClose Extravascular Closure System (Abbott Vascular Devices, Redwood City, Calif.). This star-shaped nitinol ring helps seal the entry hole left behind after a coronary catheter snakes its way from an artery in the groin to the arteries of the heart. Only 4 mm across--about half the diameter of a ballpoint pen--the StarClose is positioned against the outside arterial wall at the puncture site and then released.


"This device has little pins that grab the arterial tissue from the outside, then fold inward, causing it to pucker a little and seal the puncture. It’s a novel and exciting approach," said Dr. Peter N. Ruygrok, cardiology director at Auckland City Hospital in Auckland, New Zealand.

Dr. Ruygrok led a study of 25 patients who were treated with the StarClose device after having coronary stenting. All patients were taking the recommended regimen of blood-thinning drugs to prevent clots from forming during the procedure.

Use of the StarClose device was successful in 23 of 25 patients. On average, it took only 36 seconds to insert the clip and close the arterial puncture. Despite the aggressive blood-thinning regimen, it took an average of only 37 seconds for bleeding to completely stop. There were no serious complications.

Without the StarClose or another type of arterial closure device, the patient must rest quietly for approximately four hours after a coronary intervention before it is safe for a nurse to remove the sheath that guides treatment catheters into and out of the artery. Manual pressure must then be applied above the puncture site for 20 minutes or more, until a blood clot seals the wound. The patient must lie flat for another four to six hours to keep from disturbing the fresh clot.

A key advantage of the StarClose device is that, in an era of overworked nursing staff and scarce hospital beds, the interventional cardiologist can remove the guiding sheath immediately after the coronary procedure, potentially speeding both transfer of the patient to a regular hospital room and discharge from the hospital.

"We can move patients out of the cardiac care area more quickly," Dr. Ruygrok said. "Four hours of lying quietly waiting for the sheath to be pulled is a lot of down time for the patient and for the hospital bed."

Kathy Boyd David | EurekAlert!
Further information:
http://www.scai.org

More articles from Health and Medicine:

nachricht 3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg

nachricht Better equipped in the fight against lung cancer
16.05.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Research reveals how order first appears in liquid crystals

23.05.2018 | Life Sciences

Space-like gravity weakens biochemical signals in muscle formation

23.05.2018 | Life Sciences

NIST puts the optical microscope under the microscope to achieve atomic accuracy

23.05.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>