Apparatus to treat an eye comprises an annular retention structure to couple to an anterior surface of the eye. The retention structure is coupled to a suction line to couple the retention structure to the eye with suction. A coupling sensor is coupled to the retention structure or the suction line to determine coupling of the retention structure to the eye. A fluid collecting container can be coupled to the retention structure to receive and collect liquid or viscous material from the retention structure. A fluid stop comprising a porous structure can be coupled to an outlet of the fluid collecting container to inhibit passage of the liquid or viscous material when the container has received an amount of the liquid or viscous material. The coupling sensor can be coupled upstream of the porous structure to provide a rapid measurement of the coupling of the retention structure to the eye.

A method for operating a breastpump unit for expression of human breastmilk and various breast shields for use in this method allow a maximum pumping performance and a minimum pumping duration per pumping session. The breast shield has an inner chamber for receiving a nipple of the breast and also at least one outer chamber which at least partially surrounds the nipple. The inner chamber is subjected to a constant pressure and the at least one outer chamber is subjected to a pulsating pressure.

A multi-layered wound dressing including a fibrous absorbent layer for absorbing exudate from a wound site. The wound dressing also includes a support layer configured to reduce shrinkage of at least a portion of the wound dressing.

A catheter for transcutaneous and transluminal vacuum closure of perianal or entero-cutaneous fistulas and abscesses containing a body ending in a dome having a low-friction surface and equipped with a series of openings on the surface that connect inside the catheter body into a catheter chamber, which is then connected to a tube connected to a vacuum generating system characterized in that the catheter body on the outside has edges arranged in the shape of many helicoid coils, and in the grooves between these coils the series of openings are made into the chamber inside the catheter.

The wound therapy apparatus may include a wound interface sealingly securable to the skin surface around a wound bed to encloses the wound bed within an enclosed space that is fluid-tight. The wound interface may be sufficiently deformation resistant to distend at least a portion of the wound bed into the enclosed space when pressure p.sub.0 within the enclosed space is less than ambient pressure p.sub.amb. Fluid may be communicated with the enclosed space when the wound interface is sealingly secured to the skin surface in order to vary a pressure p.sub.0 within the enclosed space periodically over the pressure range p.sub.min≤p.sub.0≤p.sub.max. The variation of the pressure p.sub.0 may distend the wound bed into communication with a pad received within the enclosed space and decreases the wound bed contact with the pad. Related methods of use of the wound therapy apparatus are also disclosed.

Embodiments of the present disclosure provide a method and apparatus for filtering and surgical procedures. An exemplary apparatus includes an evacuation tube having a filter, a long axis and a hollow conduit extending through the long axis, the hollow conduit fluidly connecting a tube inlet and a tube outlet, the filter located within the hollow conduit operable to remove particles from a flow passing through the hollow conduit from the tube inlet to the tube outlet.

In some embodiments, a negative pressure wound therapy device includes a negative pressure source and a controller configured to, in response to determining that the negative pressure source is directly fluidically connected to a wound dressing without a canister between the two, operate the negative pressure source in a first mode; otherwise, operate the negative pressure source in a second, different mode. The controller can be further configured to, in response to determining that a level of activity of the negative pressure source over a first time duration satisfies at least one of a leak or blockage condition, provide an indication of at least one of a leak or blockage and, in response to determining that the level of activity does not satisfy the at least one of the leak or blockage condition over a second time duration subsequent to the first time duration, discontinue providing the indication.

A method for characterizing a state of an end effector of an ultrasonic device is disclosed. The ultrasonic device including an electromechanical ultrasonic system defined by a predetermined resonant frequency. The electromechanical ultrasonic system further including an ultrasonic transducer coupled to an ultrasonic blade. The method including applying, by an energy source, a power level to the ultrasonic transducer; measuring, by a control circuit coupled to a memory, an impedance value of the ultrasonic transducer; comparing, by the control circuit, the impedance value to a reference impedance value stored in the memory; classifying, by the control circuit, the impedance value based on the comparison; characterizing, by the control circuit, the state of the electromechanical ultrasonic system based on the classification of the impedance value; and adjusting, by the control circuit, the power level applied to the ultrasonic transducer based on the characterization of the state of the end effector.

Provided are drainage systems that may include a drainage manifold and may be suitable for draining fluid from a tissue site. The drainage manifold may include a plurality of elongate members having a moveable end that may be adapted to configure the drainage manifold to treat a uniquely shaped tissue site. The drainage manifold may be coupled to a drainage tube with a transitional connector to provide a drainage system capable of distributing reduced pressure to the tissue site to enhance the drainage of fluids.

Urinary catheter-insertion kits can include a working tray, a storage tray, a protective paperboard, and a urinary catheter assembly, including a urinary catheter and a drainage system. The working tray can be nested on top of the storage tray. The working tray includes preformed sections configured to accommodate components of the urinary catheter-insertion kit. Methods of urinary catheterization include use of the urinary catheter-insertion kits.