Plasma cutters could make surgery less bloody
In medicine, plasma usually refers to the liquid component of blood. Now scientists are researching how to better harness the plasma found in stars and lightning—the fourth fundamental state of matter, alongside solids, liquids and gases—to cut into the body like a blowtorch for bloodless surgery.
Since the early 20th century, surgeons have used sparks of plasma to zap warts and other malignant tissues. Late in that century researchers began investigating how jets of plasma might be used to carve up flesh just as industrial plasma cutters have carved up metal since the 1960s. These plasma scalpels would cauterize flesh as they slice. “It’s like a lightsaber,” says Washington, D.C., surgeon Jerome Canady, who invented one of the first surgical plasma cutters.
Internal bleeding can be lethal, and finding ways to prevent it can be potentially lifesaving. Minimizing the need for blood transfusions can also be vital, especially on the battlefield—U.S. Special Operations Command field-tested surgical plasma knives in 2008.
A plasma cutter works by streaming pressurized gas such as argon through a narrow channel, where it acquires an electrical charge, transforming it into a blade of plasma traveling more than 1,500 miles per hour. Surgical plasma cutters typically use relatively cold plasmas, hot enough to cauterize tissue on direct contact but only heat surrounding cells to about 97 degrees Fahrenheit. “We can get it more precise than a scalpel blade,” Canady says. “You get 0.4 to 0.8 millimeter [0.02 to 0.03 inch] of collateral damage with conventional scalpels, but just 0.1 to 0.2 millimeter [0.004 to 0.008 inch] with plasma cutters.”
The Latest Bing News on:
- Harnessing Laser Ablation for Polymer-Based Deviceson October 14, 2020 at 5:00 pm
The ejected ablated particles rise upward in a plasma gas and are captured in a remote debris ... Hot needles, drill bits, or scalpels can drill holes that are 0.001–0.04 in. in diameter during ...
- Plasma Coating Process Produces Multifunctional Medical-Grade Textileson October 14, 2020 at 5:00 pm
Plasma-coated yarns can be woven into textiles to provide antimicrobial and antistatic properties, and can be used in textile-based electrodes. Plasma-based surface treatment is a mature technology in ...
- Using Plasma Scalpels with Chemotherapy Against Brain Canceron October 14, 2020 at 12:20 pm
Cold atmospheric plasma is a relatively new technique that utilizes a tool that generates a sort of plasma scalpel, except this torch is not hot, but just a bunch of excited molecular species in the ...
- What President Trump’s emergency COVID-19 therapies say about his conditionon October 5, 2020 at 5:19 pm
The concept is similar to convalescent plasma—but instead of being a crude extract yanked from blood, monoclonal antibodies are a bioengineered scalpel that carefully establishes an immunity shield.
- Argentine cartoonist Quino, creator of ‘Mafalda’ comic, dieson September 30, 2020 at 11:43 am
“I don’t think my cartoons are the sort that make people laugh their heads off. I tend to use a scalpel rather than tickle the ribs,” Quino said inan interview with The UNESCO Courier that w ...
- Global Electrosurgical Devices Market (2019 to 2024) - Featuring Boston Scientific, Conmed & Hologic Among Others - ResearchAndMarkets.comon September 10, 2020 at 7:14 am
Devices in this global market analysis include electrosurgery: electrosurgical forceps, pencils, scalpels and ablation devices employing monopolar and bipolar radiofrequency and plasma energy ...
- In vivo pharmacologyon October 9, 2017 at 2:41 am
Plasma preparation Collect whole blood in heparin coated tubes ... Distal tail collection: Mice will be warmed by a heating lamp for 5 min. A scalpel will be used to slice gently at tail vein. Blood ...
The Latest Google Headlines on:
The Latest Bing News on:
- Terror funding accused gets 6 hours parole for wife's surgeryon October 24, 2020 at 9:56 am
The Delhi High Court has allowed six hours custody parole to a terror funding case accused to meet his wife and stay with her during her surgery for removal of a tumour from her uterus.
- Arnold Schwarzenegger says he feels 'fantastic' after undergoing heart surgeryon October 24, 2020 at 9:35 am
"Governor Schwarzenegger's pulmonic valve was successfully replaced and he is currently recovering from the surgery and is in stable condition," Daniel Ketchell, a Schwarzenegger spokesperson, tweeted ...
- Arnold Schwarzenegger reveals he had heart surgery, says he feels 'fantastic'on October 24, 2020 at 4:07 am
Arnold Schwarzenegger revealed on Twitter Friday that he recently had a "new aortic valve" implanted in his heart.
- Kapil Dev stable after undergoing heart surgery for a blocked arteryon October 24, 2020 at 3:52 am
At the recommendation of the family doctor Dev went to hospital where it was determined he had a blocked artery in the heart. An angioplasty is a medical procedure that widens blocked or narrowed ...
- Northwestern Medicine Central DuPage Hospital offers MitraClip, an alternative treatment to open heart valve surgeryon October 23, 2020 at 9:31 pm
Historically, patients with severe mitral regurgitation required open heart surgery. The Bluhm Cardiovascular Institute ... reducing or eliminating the backward flow of blood. "Patients experience a ...
- Arnold Schwarzenegger reveals he has has undergone heart surgeryon October 23, 2020 at 1:58 pm
The Terminator actor shared on social media that he had his aortic valve replaced recently in Cleveland to go with his new pulmonary valve that he had inserted in April 2018.
- 'It's a sad irony, isn't it?': Blood donations continue to drop off as COVID-19 cases rise and hospitals increase demandon October 23, 2020 at 6:02 am
The pandemic has strained the nation's blood supply, with donations increasing but demand increasing as hospitals continue to treat COVID-19 patients.
- Nasal septum surgery can affect behaviour, say medics from RUDN Universityon October 22, 2020 at 10:28 am
A team of medics from RUDN University conducted an experiment on rats and confirmed that surgeries in the nasal cavity can cause behavioral changes, namely, make the animals timider. This effect is ...
- Newborns Getting Preoperative Blood Transfusions Have More Complicationson October 22, 2020 at 9:36 am
Newborns undergoing surgery suffered worse outcomes if they had received preoperative blood transfusion, registry data showed. The incidence of 30-day mortality (16.8% vs 2.6%, P
- Study finds critically ill infants given blood transfusion before surgery have poorer outcomeson October 21, 2020 at 4:44 am
Delaware [US], October 21 (ANI): Critically ill newborns who receive blood transfusions prior to surgery had about a 50% increased rate of complications or death than those who did not receive ...