Hilda Barbro Hjalmarsson (10 December 1919 in
Närke
Närke () is a Swedish traditional province, or ''landskap'', situated in Svealand in south central Sweden. It is bordered by Västmanland to the north, Södermanland to the east, Östergötland to the southeast, Västergötland to the southwe ...
- 13 February 2012 in
Degerfors
Degerfors () is a locality and the seat of Degerfors Municipality, Örebro County, Sweden, with 7,160 inhabitants in 2010. Degerfors is the sixth-largest city in Örebro County. It is located at the southern shore of lake Möckeln, 13 km (8 mi) s ...
) was a
Swedish
Swedish or ' may refer to:
Anything from or related to Sweden, a country in Northern Europe. Or, specifically:
* Swedish language, a North Germanic language spoken primarily in Sweden and Finland
** Swedish alphabet, the official alphabet used by ...
nurse, care teacher and inventor.
Biography
Barbro Hjalmarsson invented the battery-powered blood cradle "Triomix", which automatically shakes a test tube with blood so that the blood cells are separated from the blood plasma correctly. Her invention saved both the time it took to turn each tube 10-12 times as well as increased quality in the test by avoiding human error. She was granted a patent in 1994 for this "Mixing apparatus comprising a mixing plate intended for receiving test tube tubes, which is imparted to a rocking movement of a certain frequency". Her invention reduced the manual work and made the sampling safer.
References
Further reading
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External links
Photo of Triomix
{{DEFAULTSORT:Hjalmarsson, Barbro
20th-century Swedish inventors
1919 births
2012 deaths
People from Närke
Swedish nurses
Swedish educators