Abstract: A coupling device (3,4) for medical purposes with at least one coupling channel (9,18) having a mouth in a coupling surface (10), for sealed co-operation with at least one access channel (7) with a mouth in a connecting surface (?). of an access device (2), which is connectable to a patient, is distinguished in that the coupling surface (10) includes a flexible portion (11) for contacting against the connecting surface (6) and being of a material having a higher degree of flex than a primary material of the coupling device, which portion for sealing purposes surrounds the mouth of said at least one coupling channel (9,18).

Abstract: An access device (2) for external connection of an external circuit or a fluid source to a patient for medical purposes, including mouths (7) of access channels (8) with connections that are connectable to the patient and being surrounded by a connecting surface (6), and a guide with holding elements (5) which is open in its both ends for the co-operation with holding means (17) on a coupling device (3,4). Portions (30) of the access channels (8), which are most adjacent to each other are formed with curves that are directed to each other so that the course of a transition channel (9), which is arranged to be formed by the access device and a connected coupling device of the kind which is formed in order to directly interconnect said two mouths, has an inner curved portion in the area of the connecting surface. The invention also concerns a method for producing an access device, a coupling device and an access system.

Abstract: A sensor unit (5) and a method for sensing a blood related parameter in a bloodstream of a human or an animal, including sensing the blood related parameter(s) in a channel (7) of a lid member for a main body of a bloodstream access device (1) which channel allows a continuous blood flow passing between an artery side and a vein side of the bloodstream access device (1). The invention also concerns a method for monitoring the function of a bloodstream access device and a blood parameter sensor system.

Abstract: Device for external connection of the bloodstream of a patient to an external circuit or a fluid source for medical purposes. The device includes a main body with at least a first opening being surrounded by first sealing surface (-s) and being adapted to be protected by a removable protective member. A connecting member with at least one second opening being arranged to be protected by a protective body which is removable with respect to the connecting member. The connecting member is connectable to the main body under simultaneous removal of the protective member and the protective body in order to obtain leakproof connection between the openings. The main body is provided with holding elements forming a guide which is open in both ends for the protective member and the connecting member respectively. The invention also concerns a connecting unit for the connecting device.