Abstract: A patient's skin puncturing device, particularly for collecting a blood sample for diagnostic purposes, including a housing, a lancet slidably positioned inside the housing and having a body with a sheathed puncturing needle seated therein, and a push button positioned at the one end of the housing. Between a face end of the push button and the lancet body a drive spring is placed, and between the other end of the housing, which is provided with an opening for the puncturing needle, and the lancet body a return spring is placed. Between the housing and the lancet body is placed a lancet actuation lock, preferably in the form of interlocks of a washer. The device has a drive spring catch, preferably in the form of grabs of the washer, to preclude the drive spring from following the lancet in the puncture phase and in the retraction phase of the lancet.

Abstract: A patient's skin puncturing device, particularly for collecting a blood sample for diagnostic purposes, comprises a housing (1), a lancet slidably positioned inside the housing (1) and having a body (3) with a sheathed puncturing needle (4) seated therein, and a push button (2) positioned at the one end of the housing (1). Between a face end of the push button (2) and the lancet body (3) a drive spring (5) is placed, and between the other end of the housing (1), which is provided with an opening (Ia) for the puncturing needle (4), and the lancet body (3) a return spring (7) is placed. Between the housing (1) and the lancet body (3) is placed lancet actuation locking means, preferably in the form of interlocks (6b) of a washer (6). The device has drive spring catching means, preferably in the form of grabs (6a) of the washer (6), to preclude the drive spring (5) from following the lancet in the puncture phase and in the retraction phase of the lancet.

Abstract: A pipetting device comprises a housing (1) with a handle (2) and a pipette (4) holder assembly (3), wherein the housing (1) end portion (7) incorporates a spherical raceway (16) to which the pipette (4) holding assembly (3) in mounted by the means of a connecting assembly (17) capable of sliding on the spherical raceway (16) at the housing (1) end portion (7) to facilitate the change of orientation angle of the pipette (4) axle in every plane with respect to the handle (2). The connecting assembly (17) comprises a first slider (18) slidably set in a rectangular opening (19) in the spherical raceway (16) at the housing (1) end portion (7), and a second slider (20) slidably set in a rectangular opening (21) in the first slider (18).

Abstract: An electronic pipetting device for aspirating and dispensing of set liquid volume comprises a handle (1), to the lower part of which a stem assembly (3) is attached, and a control panel (2), whereas the control panel (2) is connected with the handle (1) in such a way that it can rotate with respect to the longitudinal axis of the handle (1) and/or move it upwards and parallel to the longitudinal axis of the handle (1).

Abstract: A pipetting device comprises a housing (1) with a handle (2) and a pipette (4) holder assembly (3), wherein the housing (1) end portion (7) incorporates a spherical raceway (16) to which the pipette (4) holding assembly (3) in mounted by the means of a connecting assembly (17) capable of sliding on the spherical raceway (16) at the housing (1) end portion (7) to facilitate the change of orientation angle of the pipette (4) axle in every plane with respect to the handle (2). The connecting assembly (17) comprises a first slider (18) slidably set in a rectangular opening (19) in the spherical raceway (16) at the housing (1) end portion (7), and a second slider (20) slidably set in a rectangular opening (21) in the first slider (18).

Abstract: In the method of dispensing liquid according to the invention, when liquid is aspired by the pump to the pipette, the required size of dose of the liquid is dispensed from the pipette in proportion to the atmospheric air fed thereto through a valve or a set of connected to the pipette, whereas the amount of supplied atmospheric air is processor programmed by the determination of time and/or flow rate and/or damping of the supply of atmospheric air into the pipette. Pipetting device according to the invenvention comprises a housing with a handle (3) for mounting the pipette (4), whereas in the housing, an air pump (6) is located, connected to the pipette (5), and a processor (15) to control the operation of the device. The pipetting device comprises also a set of valves (10) for processor (15) controlled atmospheric airflow during dispensing liquid, whereas the set of valves (10) is connected to the pipette (5).

Abstract: In the method of pipette calibration, the volume of liquid to be aspired is manually set by turning in and out the adjustment screw regulating the length of the operational stroke of the plunger inside the shaft, the position of the adjustment screw is detected, and a signal corresponding to the position of the adjustment screw is sent to the pipette electronic system, and next the signal corresponding to the position of the adjustment screw is compared with values of points from the aspiration table or values of the aspiration function, which has been earlier input to the memory of the electronic system correspondingly as the standard aspiration table or aspiration function for the pipette, and next to the position of the adjustment screw, the value of the aspired liquid volume is assigned, and displayed on the display.

Abstract: The device for puncturing comprises a sleeve (1), a push element (2) mounted on one end of the sleeve (1), a piston (5) with a puncturing tip (8) slidably mounted inside the sleeve (1), and a drive spring (10) positioned between a face (9) of the push element (2) and the piston (5), wherein the push element (2) comprises turnably mounted thereto a setting element (41) of the patient's skin piercing force having inwardly directed stair shaped members (42, 43) pressing the push rod (6) of the piston (5) in operation.

Abstract: A device for measuring the parameters of a sample of fluid comprising exchangeable containers for calibrating fluids and an oxygen electrode. The device comprising a measuring chamber having at least two measuring channels with measuring electrodes for determining the acid-base equilibrium parallel introduced into the measuring channel of the device and connected with a common electronic system. The exchangeable containers for calibrating fluids each comprising an elastic, impermeable container for gases with an elastic joint for ensuring tightness of the connection between the container and a device. The oxygen electrode comprising an oxygen electrode of a Clark's electrode system with an anode made of an element selected from the VIB group of the periodic system of chemical elements.

Abstract: A puncturing device which includes a sleeve (1), a push-button (2) mounted on one end of the sleeve (10), a piston (5) which has a puncturing tip (7) and is mounted in the sleeve (1), and a power spring (9) placed inside the sleeve (1) between the face (8) of the push-button (2) and the piston (5). The piston (5) has on its outside perimeter wings (11) which rest against the internal projection (12) of the sleeve (1). A return spring (10) is located inside the sleeve (1) between its bottom (3) with the hole (4) for the puncturing tip (7) and the piston (5).

Abstract: A fluid dispensing device appropriate for precision measuring of exactly determined dosages of fluid in the course of metering, diluting and titrating.The fluid dispensing device has a control unit together with a programmable electronic circuit, a keyboard and a display; a drive unit with a motor and piston-cylinder units, each a cylinder and a piston, which are placed into a separate housing. The shaft of this motor is connected to pistons by a coupling, and each cylinder is connected to a corresponding pipette by a flexible electro-pneumatic conduit. The pneumatic conduits and conductors have a common casing. The programmable electronic circuit has a temperature compensation system provided with temperature-sensitive elements, preferably thermistors, one of them being seated inside the housing, near one of the pistons, while the other is seated into a bracket used for mounting the other pipette.