33results about "Suction irrigation systems" patented technology

The invention disclosed in this document presents a novel direct in-scope suction system designed for the retrieval of calculus fragments within the body. This system comprises two key components: a calculus fragments retrieval device and a pump unit. The calculus fragments retrieval device features a body with a single working channel that includes both an irrigation port and a suction port, which are connected to respective irrigation and suction pumps via elastomer-based rubber tubes. This setup allows for the controlled infusion of saline solution into the body lumens during lithotripsy procedures, ensuring clear visibility and fragment clearance. The retrieval device includes a trigger lever connected to a pincher tab. When the operator presses the trigger lever, the suction port is opened by releasing the pinched suction tube, increasing pressure inside the body.

A vacuum suction control system for use with a vacuum source and a suction conduit includes a connection tube configured to connect the vacuum source with a lumen of the suction conduit. An on-off valve is operably coupled to the connection tube, and a sensing unit is configured to detect flow within the connection tube and provide a signal representative of the flow. A controller receives the signal to decide whether to open or close the valve. The controller can automatically close the valve to shut off the flow when the flow through the connection tube is unrestricted or according to a predetermined timing sequence. The controller can also periodically open a closed valve to determine whether the flow has entered an acceptable range. The controller can also pulse the suction with a pressure manipulation assembly when the flow is restricted or occluded.

Methods and apparatuses for blood clot aspiration. Described are fluid management components and assemblies for blood clot extraction from a patient's body and for filtering blood and recirculating blood back into the patient's body.

Medical systems and devices configured to adjust fluid flow are described. The medical system may include a medical device having a handle coupled to a shaft that includes at least one working channel. The handle may include a port in communication with the at least one working channel and configured to connect to a source of fluid or vacuum. The medical system also may include a control mechanism coupled to or integrated into the handle. The control mechanism may include a grippable portion configured to adjust fluid flow through the at least one working channel of the medical device when a user squeezes the grippable portion or moves the grippable portion relative to the handle.

A surgical system and a respective method are described. The surgical system comprises a handpiece comprising a distal end operable for performing a surgical operation on a patient's eye, a pumping module comprising one or more pumps configured for transmitting and / or evacuating fluids via the handpiece, a pressure sensor assembly comprising one or more pressure sensors positioned at one or more selected positions along a path for fluid flow between the pumping module and the distal end of the handpiece, and configured to provide pressure data indicative of fluid pressure along the path, and a controller comprising one or more processors. The controller is configured and operable to receive the pressure data and operation data indicative of a rotation rate of the one or more pumps, and to process the received pressure data and operation data to determine the operation status of the pressure sensors.

Methods and apparatuses for blood clot aspiration. Described are fluid management components and assemblies for blood clot extraction from a patient's body and for filtering blood and recirculating blood back into the patient's body. Also disclosed is a vent system including a common vent line (1508) to fluidly couple a reservoir (1403), a clot capture chamber (1405) and a blood return syringe (1409).

A self-contained ocular surgery instrument, including a power module having a body presenting a mating coupler and including a compressed gas supply; a fluid reservoir; an aspiration pump; an aspirated material reservoir and a control panel. The mating coupler is structured to receive and couple to at least one module that facilitates performance of an eye surgery task. The compressed gas supply is coupled to the aspiration pump and the aspirated material reservoir is in fluid communication with the aspiration pump to receive aspirated material from the mating coupler. The fluid reservoir is in fluid communication with the mating coupler such that fluid is supplied under pressure to the mating coupler and thus to the at least one module that facilitates performance of an eye surgery task. The control panel is in controlling communication with the compressed gas supply, the aspiration pump and the aspirated material reservoir.

Disclosed herein are methods and devices for providing suction at a target area during a medical procedure. A medical device can be provided and can comprise a handle and an elongated shaft extending from the handle. The elongated shaft can comprise a longitudinal axis, a proximal end, a distal end, and a central lumen extending to a distal tip having an opening. The medical device can comprise a plurality of cutting elements within the central lumen, the plurality of cutting elements extending from an inner surface of the elongated shaft, the plurality of cutting elements being angled with respect to the longitudinal axis such that an edge of each of the plurality of cutting elements adjacent to the proximal end is tapered, the plurality of cutting elements being spaced apart both along the longitudinal axis and circumferentially offset with respect to an inner circumference cross-section of the elongated shaft.

The present invention relates to systems and methods for post occlusion surge mitigation and ophthalmic surgical systems. According to certain embodiments, a surgical cassette for an ophthalmic surgical system includes a perfusion conduit in fluid communication with a handpiece and delivering fluid to a surgical site. An aspiration conduit is in fluid communication with the handpiece and carries fluid away from the surgical site. An aspiration pump generates a vacuum pressure in the aspiration conduit to direct fluid through the aspiration conduit toward a drain reservoir. A reservoir is coupled to a pressure-vacuum source to manage the reservoir pressure. A valve is in fluid communication with the aspiration conduit and the reservoir and provides one or more passageways between the aspiration conduit and the reservoir. Each sensor detects a pressure associated with the surgical site. A computer controls the valve in response to the pressure detected by one or more of the pressure sensors to reduce pressure variations or volume variations.

Control unit (1) for an electric drive unit (2) of an ophthalmic surgical handpiece (3) for processing an eye lens (52), which drives a treatment needle (14), comprising a generator unit (4) for providing an electrical control variable (5, 6) for the electric drive unit (2), wherein the generator unit (4) is configured to provide the control variable (5, 6) with a control oscillation, wherein the control oscillation has a first oscillation component at a first control frequency, wherein the first oscillation component is adjustable depending on a first ratio of a mechanical displacement amplitude of the treatment needle (14) to the electrical control variable (5, 6) at the first control frequency, wherein the generator unit (4) is further configured to provide the control oscillation of the control variable (5, 6) with at least one further oscillation component at a further control frequency different from each other control frequency,that the further oscillation component is adjustable depending on a further ratio of the mechanical displacement amplitude of the treatment needle (14) to the electrical control variable (5, 6) at the respective further control frequency. characterized in that the generator unit (4) provides the control variable (5, 6) such that a first period attributable to a forward movement of the treatment needle (14) is shorter than a second period attributable to a return movement of the treatment needle (14).

An ultrasonic phacoemulsification handpiece with a sensor and a surge control system and a method. The central aspiration lumen of the ultrasonic phacoemulsification handpiece consists of two components of plug-in loose fit: a fixed lumen and an extension lumen; a small pressure sensor is mounted on the extension lumen, but still able to keep the easy-to-use size and maintain the ultrasonic performance of the handpiece. The extension lumen minimizes the effect of ultrasonic vibration on the sensor while maintaining sufficient stiffness for installing and removing the phacoemulsification tip. The design of the handpiece transducer reduces the effect of this sensor installation on the ultrasonic performance. For ultrasonic phacoemulsification cataract removal surgery, the short distance from the pressure sensor to the surgical site provides a technical solution for reliably controlling the risk of the post occlusion surge.

A miniaturized pump assembly for inflow and outflow of fluid gas and smoke during arthroscopic and laparoscopic surgery.

The subject matter described herein relates to a suction instrument, more particularly a bipolar mapping suction instrument, for surgical purposes and to a system for suctioning fluids and tissue and for monitoring nerve tissue. The suction instrument comprises a cannula unit, which comprises an electrically conductive outer cannula tube, an electrically conductive inner cannula tube, and insulation. The electrically conductive inner cannula tube is electrically connected to a first pole of the bipolar electrical connection of the second interface. The electrically conductive inner cannula tube is arranged concentrically in the outer cannula tube which optionally can be insulated from the exterior. The electrically conductive inner cannula tube is mechanically connected to the handpiece and / or the first interface. The electrically conductive outer cannula tube is electrically connected to a second pole of the bipolar electrical connection of the second interface. The insulation is concentrically arranged between the outer cannula tube and the inner cannula tube. The insulation is configured to fully electrically isolate the outer cannula tube and the inner cannula tube in relation to one another.

In certain embodiments, a surgical handpiece system includes a phacoemulsification tip, a fluid management system, an ultrasonic drive system, and a controller. The phacoemulsification tip is attached to a shaft. The fluid management system is configured to manage inflow and outflow of fluid from an ocular surgical site. The ultrasonic drive system is configured to generate torsional and longitudinal vibrations in the phacoemulsification tip. The controller is configured to analyze applied voltage and current to the ultrasonic drive system using Fast Fourier Transforms (FFTs), and tune applied frequencies of the torsional and longitudinal vibrations according to at least one resonant frequency.

Methods and apparatuses for blood clot aspiration. Described are fluid management components and assemblies for blood clot extraction from a patient's body and for filtering blood and recirculating blood back into the patient's body.

Embodiments disclosed herein provide a surgical cassette including a housing having a base and a cover coupled to the base, wherein the cover and the base each at least partially define one or more channels. The housing further includes a plurality of ports formed in the base and in fluid communication with at least one of the one or more channels, a plurality of bores formed in the base and configured to receive one of a plurality of valve assemblies, and at least one pump landing formed in the base and configured to receive at least one pump assembly. A plurality of valve assemblies is disposed within the plurality of bores and configured to control fluid flow in the one or more channels of the housing. At least one pump assembly is disposed within the at least one pump landing and configured to provide a source of pressure or vacuum to the one or more channels of the housing.

Embodiments of the present disclosure generally relate to systems and methods for measuring intraocular pressure (IOP) during ophthalmic surgery. In some embodiments, a method for measuring IOP is provided. The method includes measuring fluid pressure in a fluid flow path of a handpiece device using a pressure sensor disposed therein to obtain a fluid pressure measurement, determining a sensor temperature measurement of the pressure sensor, determining a predicted sensor zero offset based on the sensor temperature measurement using a determined zero offset correlation function, and adjusting the fluid pressure measurement with the predicted sensor zero offset to obtain an adjusted fluid pressure measurement.

A surgical system includes a replaceable surgical cassette that is configured to be received by a surgical console, the surgical cassette permitting fluid flow through the cassette, the surgical system controlling the flow of fluid through the cassette via one or more flexible valves actuated by one or more actuation plungers located on the surgical console. The one or more flexible valves of the surgical cassette and the one or more actuation plungers of the surgical console include a positioning feature configured to assist with positioning the one or more actuation plungers to apply uniform and symmetric pressure to the one or more valves during actuation.

The present application relates to a brand new medical instrument, in particular to a single-hand distance-adjusting and flushing all-in-one device for field operation. The all-in-one device comprises a suction machine body (1), a suction tube (2) extending from the front end of the suction machine body (1), two lifting pieces (7) arranged at the end of the suction tube (2), a lighting circuit (11) arranged on the suction tube (2) in parallel, a lighting lamp (12) arranged at the end of the lighting circuit (11), and a suction device arranged in the suction machine body (1). The suction machine body (1) extends with a pipeline, which is a connecting tube (3) connected with a waste liquid bottle (10). The bracket can lift tissues, and can lift tissues while the suction machine is sucking, so as to keep the operation field clear, avoid adding an operation instrument and a related instrument channel, and reduce the trauma of the patient's body surface. The lifting structure can be directly integrated with the pipeline of the suction machine, or can be detachably installed on the pipeline.

According to some embodiments, a device for treating a skin surface comprises a handpiece with an opening configured to receive a container containing a concentrated treatment fluid, a skin interface portion, configured to contact the skin surface, and a treatment fluid mixing zone within the handpiece. The mixing zone can receive concentrated treatment material from the container secured to the handpiece and dilution fluid from a dilution fluid conduit, and mix the two or more input fluids / materials to create a diluted treatment fluid to be delivered to the interface portion during use. The handpiece can include a waste fluid connection in fluid communication with the interface portion of the device and a vacuum source to draw the mixed treatment fluid to the interface portion and skin tissue, and to draw spent treatment material from the interface portion during use.

A fluid management system for an ophthalmic surgical system includes an irrigation system and an aspiration system. The irrigation system carries fluid toward a handpiece and includes an irrigation pump or a plurality of pumps. The aspiration system carries fluid away from the handpiece and includes an aspiration pump or the plurality of pumps. The pumps include at least one magnetic pump configured to move the fluid. The magnetic pump includes a plug system and a magnetic field system. The plug system includes one or more plugs disposed within a housing, where each plug comprises a magnetic material. The magnetic field system generates a magnetic field to move one or more of the plugs in order to move the fluid in a pumping direction.

An anti-vacuum surge (AVS) cartridge includes a solenoid valve with a magnetic plunger having parallel flattened surfaces, in a valve cavity of a rectangular or other similar cross section. The flattened surfaces of the plunger are oppositely disposed from each other and are in line with the flow path through the aspiration channel of the AVS cartridge.

A lavage arrangement (2) comprises an applicator housing (4) which has a handle area (6) and an application opening (8) arranged on an application side (A) for dispensing a lavage fluid (SF) and which encloses a drive receptacle (10) which is accessible via a housing opening (12), a fluid line (36) by means of which the application opening (8) can be connected to a reservoir (V) of the lavage fluid (SF), and a drive unit (18) of a pump (20) which can be inserted into the drive receptacle (10) for conveying the lavage fluid (SF) from the reservoir (V) to the application opening (8), wherein the drive unit (18) comprises a motor (24), a power supply unit (26) and a rotor (30) which can be driven by the motor (24).It is provided that the applicator housing (4) has a rod-shaped housing section (16) extending along a longitudinal housing axis (AG) which forms the handle area (6) and which extends at least partially around the longitudinal housing axis (AG).

The present disclosure a pressure detection device, a sheath tube and a perfusion and suction system. The pressure detection device comprises a housing (2) and a pressure detection assembly (5) . the housing (2) has a piezometric cavity (21) and a mounting cavity (20) , the piezometric cavity (21) has an air inlet (22) for communicating with a piezometric interface of the sheath tube and a vent hole (23) for communicating with the outside, and a switch is arranged at the vent hole (23) ; and the pressure detection assembly (5) is arranged in the mounting cavity and includes a gauge pressure sensor, a voltage regulating circuit, an operational amplifier circuit and a conversion circuit; the gauge pressure sensor, the voltage regulating circuit and the operational amplifier circuit are electrically connected with the conversion circuit, and the gauge pressure sensor is used for converting a pressure signal in the piezometric cavity (21) into a voltage signal.

According to certain embodiments, a surgical cassette for an ophthalmic surgical system includes a drip conduit in fluid communication with a handpiece for transporting fluid toward a surgical site. An aspiration conduit is in fluid communication with the handpiece for transporting fluid away from the surgical site. An aspiration pump generates vacuum pressure in the aspiration conduit to draw fluid through the aspiration conduit toward an exhaust reservoir. The reservoir is coupled to a pressure-vacuum source to manage reservoir pressure. A valve is in fluid communication with the aspiration conduit and the reservoir, providing one or more channels between the aspiration conduit and the reservoir. Each sensor detects pressure associated with the surgical site. A computer controls the valve in response to pressure detected by the one or more pressure sensors to mitigate pressure or volume changes.

Disclosed herein are methods and devices for providing suction at a target area during a medical procedure. A medical device can be provided and can comprise a handle and an elongated shaft extending from the handle. The elongated shaft can comprise a longitudinal axis, a proximal end, a distal end, and a central lumen extending to a distal tip having an opening. The medical device can comprise a plurality of cutting elements within the central lumen, the plurality of cutting elements extending from an inner surface of the elongated shaft, the plurality of cutting elements being angled with respect to the longitudinal axis such that an edge of each of the plurality of cutting elements adjacent to the proximal end is tapered, the plurality of cutting elements being spaced apart both along the longitudinal axis and circumferentially offset with respect to an inner circumference cross-section of the elongated shaft.

A surgical cassette for an ophthalmic surgical system includes an irrigation system and an aspiration system. The irrigation system is in fluid communication with a handpiece and transports fluids toward a surgical site. The aspiration system is in fluid communication with the handpiece and transports fluids away from the surgical site. The aspiration system includes an aspiration pump and tubing for an aspiration conduit. The aspiration pump creates a normal vacuum pressure in the aspiration conduit to transport fluids away from the surgical site during normal operation. The tubing has a larger cross-sectional area in response to the normal vacuum pressure. The tubing contracts from a larger cross-sectional area to a smaller cross-sectional area in response to an occlusion, maintains the smaller cross-sectional area during a post-occlusion breakdown surge to mitigate the post-occlusion breakdown surge, and returns to the larger cross-sectional area after the post-occlusion breakdown surge.

To provide robot-controlled surgical tools. [Solution] The device comprises an elongated shaft, a pull wire, a device base including a drive input assembly, and an adapter connectable to the device base, the adapter including an actuator, a coupler operably coupled to the actuator and connectable to the drive input assembly, the coupler having a gear assembly engageable with the actuator, and a tension mechanism configured to disengage the gear assembly from the actuator, wherein the actuator is operable to adjust the tension of the pull wire by operating the coupler while the gear assembly is engaged with the actuator, and the tension mechanism is operable to adjust the tension of the pull wire by operating the coupler while the gear assembly is disengaged from the actuator.