Mr Rowlands, who is staying with the company for the next couple of years, declined to "discuss this level of detail".
The other original backers of Homecraft, which has 170 employees, include three venture capital groups, Thompson Clive & Partners, 3i, and Grosvenor Development Capital. A controlling 52.3 per cent stake was held by Thompson and 3i, which will jointly bank £15.17m from the sale.
John Robinson, chief executive of S&N, said: "Our strategy is to concentrate on high-growth opportunities within the healthcare market worldwide."
Homecraft's product range includes specially designed bathroom equipment, cutlery and devices that help elderly people to pick up objects.
Smith & Nephew is getting a company with a stated net asset value of £2m and which made profits of £2.9m before tax from sales of £12.6m in 1994.
Mr Aikman said: "The UK and overseas markets continue to grow steadily and this is expected to be maintained due to population demographics, and more awareness of the needs of the disabled and elderly."