Apparatus, set and method for creating a plaster impression of a limb stump of a patient for manufacturing a prosthesis shaft and adaptor

A medical apparatus (100) for use in the preparation of a plaster impression or a data model of a limb stump, wherein the apparatus (100) comprises:

• a pressure vessel (1) with a fluid chamber or a pressure chamber (DK) for receiving or storing a fluid under pressure, wherein the pressure vessel (1) comprises a wall (3) made of a first material, wherein the wall (3) limits an interior (I) of the pressure vessel (1) against an exterior (Ä), wherein the pressure vessel (1) comprises an insertion opening (9) in a first end side (2) of the pressure vessel (1) for inserting the limb stump (KS) into the interior (I) of the pressure vessel (1);
• and
• a fluid-impermeable membrane (5) made of a second material, which membrane (5) is connected to the pressure vessel (1) at a side of the insertion opening (9) at the first end side (2) arranged to form or limit the fluid chamber or the pressure chamber (DK), wherein at least a section (58) of the membrane (5) is fastened to a bottom area (4a) or to a second end side (4) of the pressure vessel (1) opposite the first end side (2) by at least one connector (53).