English Medical Medical: Instruments

In a list of products that a company is authorized to import, under the "Ventilator & Accesories" section:
KIT, DIA SFTW UPDATE, SFTW ONLY

Under the "High Frecuency Oscillatory Ventilators and Accesories" section: SHORT PAT CKT (short PAT circuit?)
CKT W/ SHORT HTD WIRE (circuit with short HTD wire?)
PT CKT BODY (PT circuit body?)

Under the "Microblenders & Accesories" section:
BRKT, MNTG ASSY (bracket, MNTG assembly)

A lot of words are abbreviated to fit the table. I can't really figure out DIA, SFTW, PAT, HTD, PT, MNTG but here I specifically want help figuring out SFTW.

Thanks!!!