An apparatus (20; 30; 40; 50; 60; 70; 80) for attaching a medical device (28; 38; 88; 128; 158) to a body of a subject, the apparatus (20; 30; 40; 50; 60; 70; 80) comprising: a back base (210; 310; 410; 610; 710) configured to be positioned between the body of the subject and a surface adapted for the subject to lie thereon; an intermediary element comprising a mounting base (220; 920; 1120; 1220; 1300; 1420) configured to be positioned on the body of the subject and said mounting base (220; 920; 1120; 1220; 1300; 1420) includes one or more coupling members configured to couple the medical device (28; 38; 88; 128; 158) thereto; at least one set of straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 930; 1130; 1230a, 1230b; 1330; 1430; 1530) configured to be connected to said back base (210; 310; 410; 610; 710) and to at least one of said medical device and said intermediary element; and at least one set of connectors (260; 740, 750; 940; 1140; 1560) configured to provide a connection between said at least one set of straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 930; 1130; 1230a, 1230b; 1330; 1430; 1530) and one or more of said back base and said at least one of said medical device (28; 38; 88; 128; 158) and said intermediary element; wherein said apparatus (20; 30; 40; 50; 60; 70; 80) is configured to prevent substantially any relative movement between said medical device (28; 38; 88; 128; 158) and the body of the subject upon attachment of said medical device (28; 38; 88; 128; 158) to the body of the subject using said intermediary element characterised in that one or more connectors (260; 740; 750; 940; 1140; 1560) of said at least one set of connectors (260; 740; 750; 940; 1140; 1560) is configured to enable pivoting of at least a portion of said one or more connectors (260; 740; 750; 940; 1140; 1560) about an axis to enable one straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 1130; 1230a, 1230b;1330; 1430; 1530) of said at least one set of straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 1130; 1230a, 1230b;1330; 1430; 1530) to be rotated so as to be fastened over the subject's shoulder. a back base (210; 310; 410; 610; 710) configured to be positioned between the body of the subject and a surface adapted for the subject to lie thereon; an intermediary element comprising a mounting base (220; 920; 1120; 1220; 1300; 1420) configured to be positioned on the body of the subject and said mounting base (220; 920; 1120; 1220; 1300; 1420) includes one or more coupling members configured to couple the medical device (28; 38; 88; 128; 158) thereto; at least one set of straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 930; 1130; 1230a, 1230b; 1330; 1430; 1530) configured to be connected to said back base (210; 310; 410; 610; 710) and to at least one of said medical device and said intermediary element; and at least one set of connectors (260; 740, 750; 940; 1140; 1560) configured to provide a connection between said at least one set of straps (230, 240, 250; 330, 340; 430; 530; 840, 850; 930; 1130; 1230a, 1230b; 1330; 1430; 1530) and one or more of said back base and said at least one of said medical device (28; 38; 88; 128; 158) and said intermediary element; wherein said apparatus (20; 30; 40; 50; 60; 70; 80) is configured to prevent substantially any relative movement between said medical device (28; 38; 88; 128; 158) and the body of the subject upon attachment of said medical device (28; 38; 88; 128; 158) to the body of the subject using said intermediary element