Suction device for medical purposes

摘要

PCT No. PCT/EP96/05488 Sec. 371 Date Dec. 21, 1998 Sec. 102(e) Date Dec. 21, 1998 PCT Filed Dec. 7, 1996 PCT Pub. No. WO97/21454 PCT Pub. Date Jun. 19, 1997The invention relates to a suction device for medical purposes with one or more side apertures and with a valve which responds to a vacuum. The invention is characterised in that the side apertures are covered by film halves which overlap in the middle, one of said halves being made from highly elastic thin material while the other is made from a stiff inflexible material and covers the flexible film in the overlap region. The side apertures can also take the form of elongated apertures. An advantage of this embodiment is the low damage to tissue when used in the overpressure area especially in minimally invasive surgical applications.