The use of penile support device such as penile cast worn externally during intercourse has been tried to provide length and rigidity to the penile shaft (24). Each device can be customised to the patient’s penile size and provided an option for patients who are seeking non-pharmaceutical/non-invasive treatment, or have end-organ failure who may not be candidates for, or unable to afford, penile prosthesis implant.
To understand the physiology of erectile dysfunction, we need to know erection first. An erection occurs when impulses from the brain and genital nerves cause blood to fill the two chambers known as the corpora cavernosa in the male penis. This causes the penis to expand and stiffen. Anything that blocks these impulses or restricts blood flow to the penis can result in ED. This block may be caused by psychological, neurologic, hormonal, arterial, or cavernosal impairment or even from a combination of all these factors.3

Another common cause of ED for many men is stress. When the body is under stress—either mental or physical—the sympathetic nervous system kicks in, releasing a cascade of stress hormones. Chronic stress leads to elevated levels of these hormones, which can lead to weight gain around the middle, and remember, those excess fat cells convert testosterone to estrogen. Stress also reduces sexual drive and leaves very little physical energy for sex. If chronic stress is a problem, try these supplements:
If you search the Internet, you’ll find lists of specific foods that are supposed to be good for erectile dysfunction.  We’ve researched this topic extensively, searching databases of clinical studies, and found no evidence that these foods provide significant benefits from men with ED.  (We suspect that most of the sites on the web are simply copying lists from one another.)
Erectile dysfunction (ED) is commonly called impotence. It’s a condition in which a man can’t achieve or maintain an erection during sexual performance. Symptoms may also include reduced sexual desire or libido. Your doctor is likely to diagnose you with ED if the condition lasts for more than a few weeks or months. ED affects as many as 30 million men in the United States.