wheelchair for bariatric size (Sherwood NG5)

PLEASE does anyone have a wheelchair (needs to be 22" wide minimum) to gift or lend for a bariatric person who has developed leg pain (started in back) and can't walk, stand or lay down and in EXCRUCIATING pain which is making them literally scream when moving? Red Cross does not have any available. G.P. has prescribed plethora of painkillers (not making any difference).
Told would be waiting "hours and hours or days" on a trolley (lack of beds) if attended A/E. PLEASE can somebody help. Also zimmer frame and extra large commode. Thank you for any help or replies that might arise from this request.