Artificial organs – better than the original?
Draft page – more information coming soon.
3D-printed silicone heart beats like the real thing – Engadget – 14-Jul-2017
Single solid silicone structure using a 3D-printing, lost-wax casting technique.
Doesn’t have the usual disadvantages of metallic and plastic mechanisms.
Designed to imitate the human heart as closely as possible in form and function.
Unfortunately currently only lasts for 3,000 beats – about 45 minutes.
Artificial lungs in a backpack may free people with lung failure – New Scientist – 21-Mar-2017
Usual treatment is a large machine that pumps their blood through a gas exchanger to provide oxygen and remove carbon dioxide.
Artificial lungs have proven harder than making a mechanical heart.
Lungs contain a fabulously convoluted network of branching air sacs to allow gases to diffuse in and out of the blood.
One device is small and light enough to be carried in a backpack – but still needs a gas cylinder.
Another device under development runs off the air in a room using extremely thin channels formed by polymer membranes.
Artificial robotic heart muscles keep pigs alive after heart attacks – WIRED – 18-Jan-2017
Existing mechanical pumps come with significant health risks including infections and causing blood clotting.
Soft robotic sleeve fits around the heart can pump blood around the body, without ever touching it.
In test of six pigs which had all suffered from acute cardiac arrest, device restored normal blood flow and kept them alive.
Sleeve places pneumatic actuators around the heart to mimic the movement of the outer muscle layers and is customisable to patient-specific needs.
$160 million to develop artificial organs – Engadget – 13-Jun-16
Limited number of donors and organs have to be used within a matter of hours.
US government has announced $160 million in public-private investments for a new Advanced Tissue Biofabrication Manufacturing Innovation Institute.
Organization will develop techniques for repairing and replacing tissues that could lead to artificial organs.
Man lives 555 days without a heart – CNN – 10-Jun-2016
9 years ago 25-year-old Stan Larkin suddenly collapsed with undiagnosed arrhythmogenic dysplasia.
Eventually progressed to heart failure and cardiogenic shock.
His heart was removed and replaced with SynCardia artificial heart with chambers and four valves.
Backpack contains Freedom Driver that powered the artificial heart delivering pumps of compressed air.
Many patients waiting for a transplant have hearts that are so weak, the kidneys, liver and other critical organs fail.
New generation of artificial heart – Jerusalem Post – 20-Jan-2016
Heart Mate 3 gives recipient a pulse and blood pressure.
Also fewer complications such as blood clots.
Before transplant patient only had seven percent of normal function.
Rabin Medical Center implants 30 artificial hearts every year.
Development of an artificial kidney – Today’s Medical Developments – 11-Nov-2015
National Institutes of Health has awarded a four-year, $6 million grant to investigators at Vanderbilt University Medical Center (VUMC) and the University of California at San Francisco (UCSF) to develop an implantable artificial kidney.
Artificial Foam Heart Pumps Fluid – Medical Daily – 15-Oct-2015
Researchers at Cornell University have designed a new type of stretchable “foam” material.
Internal pores can be changed increase and decrease connectivity across the material – i.e. to pass fluid through it.
Could also be used to create prosthetic body parts.
UAE’s first artificial heart operation – The National – 25-Jun-2015
Battery-powered bionic heart fitted to left ventricular. Pump can last up to 10 years but may suffer complications such as anti-coagulation and infection.