http://intu.co.uk/shop/category/home-and-garden?query=sharp ...

This reference shows seem as garden tools. Not sure if this is relevant. Check it out.

There are more references to "asa en punta", which I think is what it's more often called. It is an instrument used for seeding. EN sources on microbiological inoculation of culture media call it a wire, or straight wire, which describes what it is. There is also the "asa redonda", known in English as a loop.

"Los instrumentos empleados corrientemente en la siembra son:

1. Asa de Siembra: se utiliza alambre de platino, o alambre de una aleación niquel-cromo (nicrom) que tiene propiedades semejantes a la primera, con la ventaja de ser de menor costo. Este alambre tiene un diámetro de 0,3 a1 mm y esta sujeto a un mango o porta asa metálico o de vidrio. El alambre puede ser totalmente recto (asa en punta o aguja), recto con un anillo de aproximadamente 3 mm de diámetro en la extremidad (asa) o aplastado en el extremo (espátula)."
https://es.wikibooks.org/wiki/Microbiología/Obtención_de_cul...

"Picking colonies for subculture may be carried out with a sterile nichrome or platinum wire or loop, or a disposable equivalent."
http://www.sfam.org.uk/download.cfm?docid=D0EB714F-150A-427F... (p. 13)

"Using a sterile straight wire, inoculate 3-4ml of sterile Koser’s citrate medium with a broth culture of the test organism. [...]
Use a straight wire to inoculate and wire loop to spread the inoculum. [...]
Use a straight wire to inoculate and wire loop to spread the inoculum. [...]
Inoculation of fluid media
To inoculate fluid media, use straight wire or wire loops. [...]"
https://www.cartercenter.org/resources/pdfs/health/ephti/lib...


--------------------------------------------------
Note added at 9 hrs (2017-06-01 05:49:49 GMT)
--------------------------------------------------

Seems to be OK in the US too:

"What is an Inoculating Loop?
The inoculating loop is used for the transfer of liquid or solid bacterial cultures. It consists, simply, of a handle with a thin protruding wire that is molded into a circle at the end. Many varieties of loops, made of nickel-chromium or platinum wire, are available from many suppliers. The wire may be permanently attached to a handle or replaceable, and may be obtained as either a straight wire or a twisted loop. The loop shape allows efficient transfer of liquids, which form a film over the loop. Standardized, volumetric loops are commercially available for reproducible transfers of specific volumes of liquid. Both looped and straight wires are suitable for transferring bacteria from solid media."
http://fg.cns.utexas.edu/fg/course_notebook_chapter_eight.ht...

--------------------------------------------------
Note added at 9 hrs (2017-06-01 05:51:01 GMT)
--------------------------------------------------

So the wire or loop has a handle (hence "asa"), but you don't call it a "handle with straight wire" — just a "straight wire".