Abstract: The invention relates to an ophthalmic pressure control system, comprising: a pressure regulator having an input port and an output port, and an infusion line having a proximal end and a distal end, the proximal end being connected to the output port of the pressure regulator, and the distal end being detachably connected to an ophthalmic irrigation module. Further, the system includes a control unit driving the pressure regulator for controlling an infusion fluid pressure at a distal end of the ophthalmic irrigation module. The control unit is arranged for performing a fluid calibration process including a step of determining a fluid impedance of the ophthalmic irrigation module. The infusion line is associated with a kit of parts including a first and a second ophthalmic irrigation device, or the ophthalmic irrigation module is an ophthalmic irrigation device for surgical use.

Abstract: The invention relates to an ophthalmic pressure control system, comprising: a pressure regulator having an input port and an output port, and an infusion line having a proximal end and a distal end, the proximal end being connected to the output port of the pressure regulator, and the distal end being detachably connected to an ophthalmic irrigation module. Further, the system includes a control unit driving the pressure regulator for controlling an infusion fluid pressure at a distal end of the ophthalmic irrigation module. The control unit is arranged for performing a fluid calibration process including a step of determining a fluid impedance of the ophthalmic irrigation module. The infusion line is associated with a kit of parts including a first and a second ophthalmic irrigation device, or the ophthalmic irrigation module is an ophthalmic irrigation device for surgical use.

Abstract: The invention relates to a phaco driver system for controlling operation of an ophthalmic surgical phacoemulsification device. The phaco driver system comprises a resonant output circuit for generating a transducer voltage for driving an ultrasonic transducer of the ophthalmic surgical phacoemulsification device. Further, the phaco driver system includes a bridge unit for generating a bridge output signal for feeding the resonant output circuit, the bridge output signal being based on a composition of the first and second phase signals having a fixed mutual phase difference.

Abstract: The invention relates to a phaco driver system for controlling operation of an ophthalmic surgical phacoemulsification device. The phaco driver system comprises a resonant output circuit for generating a transducer voltage for driving an ultrasonic transducer of the ophthalmic surgical phacoemulsification device. Further, the phaco driver system includes a bridge unit for generating a bridge output signal for feeding the resonant output circuit, the bridge output signal being based on a composition of the first and second phase signals having a fixed mutual phase difference.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: The invention relates to an ophthalmic pressure control system, comprising: a pressure regulator having an input port and an output port, and an infusion line having a proximal end and a distal end, the proximal end being connected to the output port of the pressure regulator, and the distal end being detachably connected to an ophthalmic irrigation module. Further, the system includes a control unit driving the pressure regulator for controlling an infusion fluid pressure at a distal end of the ophthalmic irrigation module. The control unit is arranged for performing a fluid calibration process including a step of determining a fluid impedance of the ophthalmic irrigation module. The infusion line is associated with a kit of parts including a first and a second ophthalmic irrigation device, or the ophthalmic irrigation module is an ophthalmic irrigation device for surgical use.

Abstract: A surgical cartridge includes an inner plate; and an outer plate arranged approximately parallel to the inner plate. The flow paths between the inner plate and the outer plate are arranged to form an irrigation flow path for directing fluid towards the surgical site via an irrigation connection and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection. The inner plate includes membranes adapted for cooperation with plungers and/or valves of a membrane pump. The membranes include a main membrane, at least two valve membranes and an auxiliary membrane adapted to cooperate with a main membrane plunger, valve and an auxiliary membrane plunger of the pump, respectively.

Abstract: An eye surgical cutting tool includes a tubular outer part with a closed distal end and an opening in the tube of the outer part near the closed end. The opening is bounded by an edge profile formed in the tube, which has a distal cutting edge and an opposite proximal cutting edge. A tubular inner part has an open distal end and is arranged in the tubular outer part so as to be movable in an axial direction. A suction is configured to extend ocular tissue through the opening of the outer part into the interior of the outer part and to convey severed tissue via the interior of the inner part to a proximal end of the inner part.

Abstract: The invention relates to a phaco driver system for controlling operation of an ophthalmic surgical phacoemulsification device. The phaco driver system comprises a resonant output circuit for generating a transducer voltage for driving an ultrasonic transducer of the ophthalmic surgical phacoemulsification device. Further, the phaco driver system includes a bridge unit for generating a bridge output signal for feeding the resonant output circuit, the bridge output signal being based on a composition of the first and second phase signals having a fixed mutual phase difference.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: The invention relates to an eye surgical lighting unit for lighting internal ocular tissue. The lighting unit comprises a fiber having a proximal end and a distal end, for guiding a light beam to the distal end. The lighting unit also comprises a manual unit, provided with a cannula and a handle having an internal passage positioned in line with the cannula. The fiber is adjustable between an intraocular operational position in which the fiber extends through the internal passage of the handle and through the cannula, and a chandelier operational position in which the fiber is uncoupled from the manual unit.

Abstract: The invention is directed to a staining composition and to the use of the staining composition in staining ocular tissue. In a first aspect, the invention provides a staining composition comprising a vital dye and a density increasing compound chosen from the group consisting of water soluble polymers and small inert molecules.

Abstract: An irrigation/aspiration system for irrigating and aspirating a surgical site includes an irrigation flow path for directing fluid towards the surgical site via an irrigation connection, and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection. A membrane pump is arranged for pumping fluid through the irrigation flow path and/or the aspiration flow path. The membrane pump includes a main pump chamber, at least two valves for opening and/or closing the main pump chamber and an auxiliary pump chamber arranged between the irrigation connection and/or aspiration connection and the main pump chamber for compensating movement of a main pump plunger element in the main pump chamber to provide for an approximately even fluid flow to and/or from the surgical site.

Abstract: The invention relates to a foot pedal control unit for an ophthalmic surgery system. The unit has a base and a treadle that is configured for pivotal pitch movement and for pivotal yaw movement relative to the base for generating control signals to an ophthalmic surgery system. The unit further comprises an inlay cover that is removably placed on the treadle. Optionally, the unit comprises a locking element that is movable between a lock position wherein the treadle is locked against pivotal yaw movement and a release position wherein the treadle is enabled to perform pivotal yaw movement.

Abstract: An irrigation/aspiration system for irrigating and aspirating a surgical site includes an irrigation flow path for directing fluid towards the surgical site via an irrigation connection, and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection. A membrane pump is arranged for pumping fluid through the irrigation flow path and/or the aspiration flow path. The membrane pump includes a main pump chamber, at least two valves for opening and/or closing the main pump chamber and an auxiliary pump chamber arranged between the irrigation connection and/or aspiration connection and the main pump chamber for compensating movement of a main pump plunger element in the main pump chamber to provide for an approximately even fluid flow to and/or from the surgical site.

Abstract: An eye surgical instrument, comprising at least one optical fiber for lighting of the interior of the eye, which at least one optical fiber, at a free end thereof, is provided with a light exit and with a stop situated at a distance from the free end, which stop defines an insertion part situated between the end and the stop, and at another end is connectible to a light source, while the stop forms a separate element which is arranged so as to be slidable along the at least one fiber.

Abstract: The invention relates to an ophthalmic system for controlling an infusion liquid pressure at a distal end of an ophthalmic irrigation device penetrating an eye and being connected to an irrigation line for feeding the device with an infusion liquid. The system comprises a processor that is arranged for estimating a compensation pressure for compensating an internal pressure loss in the eye due to surgical acts in the eye. The estimation result is used for dynamically adjusting, in response to the estimated compensation pressure, the pressure of the irrigation liquid in the irrigation line. The estimation step is based on a configuration and/or actual operation of an ophthalmic surgical device performing the surgical acts in the eye.