A negative pressure wound therapy device can include a negative pressure source configured to be connected, via a fluid flow path, to a wound, a valve positioned in the fluid flow path and configured to, in an open state, permit supply of negative pressure from the negative pressure source upstream of the valve and, in a closed state, block supply of negative pressure from the negative pressure source upstream of the valve, a flow restrictor positioned in the fluid flow path, and a pressure sensor configured to measure a pressure differential across the flow restrictor. The device can include control circuitry configured to, in a normal operational mode, cause the valve to be in the open state and, in a test mode, perform at least one of a leak test, a flow test, or an excessive pressure test.

A powered handpiece for imparting to a cannula of a medical device a reciprocal movement of amplitude (Δx) along a longitudinal axis (X) is provided. A housing (1) at least partially encloses a hollow tube (2) extending along the longitudinal axis (X) between an inlet end (2i) and an outlet end (2o), the inlet end (2i) being configured for coaxially coupling the hollow tube (2) to a hollow cannula (10). A ring (3) rigidly is coupled to the hollow tube (2) and has an opening (3o) defined on a plane (X, Y), having a length, L, Y ⊥X. A cam (4) mounted on a rotation axle (4r) parallel to a second transverse axis (Z) normal to the plane (X, Y) (i.e., X ⊥Y ⊥Z), offset from a centroid (C) of the cam on the plane (X, Y) by a distance (δP), and set at a fixed position relative to the housing (1), the cam being engaged in the opening (3o).

The present application provides a device (100) for transferring a fluid from a surgical site, comprising an elongate body portion (102) defining a proximal end region (106) connectable to a source of negative pressure; an elongate neck portion (104) defining a distal end region (108) of the device locatable at a surgical site; a through bore (118) extending from the distal end region to the proximal end region; and a control member (116) for selectively controlling a negative pressure at the distal end region, wherein the control member comprises a valve portion (124) configured to at least partially restrict a fluid flowing along the through bore when moved from an open position towards a closed position. A system including the device for transferring a fluid from a surgical site is also provided.

A dressing for treating tissue may be a composite of dressing layers, including a contact layer, a manifold layer, and an adhesive drape. The manifold layer may include one or more layers of felted open-cell foam in some examples. The manifold layer may be relatively thin to reduce the dressing profile and increase flexibility, which can enable it to conform to difficult geometry and other tissue sites under negative pressure. The dressing may have a length and a width less than the length. The manifold layer may include a population of holes extending at least partially therethrough, wherein the holes may be configured to promote anisotropic contraction of the dressing parallel to its width. The population of holes may have a circular, ovoid, triangular, square, hexagonal, irregular, or morphous shape. The dressing may be a bolster that may anisotropically contract to provide a closing force to a linear wound.

A guide device for cannulas for the collection of micro-fragmented subcutaneous adipose tissue includes a handle which has an axial cavity intended to house a syringe equipped with a collection cannula. The axial cavity has an open proximal end, an open distal end and a central axis. A lip protrudes cantilevered from the distal end at a distance from the central axis and from said cannula. An intermediate anti-flexion element of the cannula is arranged between the handle and the lip.

A suction device configured to simultaneously draw in fluid and expel fluid. The suction device may comprise a barrel defining a cavity and extending from a first end to a second end. A first fluid inlet may be adjacent the first end of the barrel and a second fluid inlet adjacent the second end of the barrel and a first fluid outlet may be adjacent the first end of the barrel and a second fluid outlet adjacent the second end of the barrel. A plunger may be slideably disposed within the cavity of the barrel with a handle assembly operably coupled thereto. A actuation of the handle assembly may be configured to move the plunger within the cavity between the first end and the second end of the barrel.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

A suction device includes a negative pressure generator, a connector and a mask; the negative pressure generator comprises a housing and a piston rod, wherein the housing is internally provided with a cavity, an upper end of the housing is provided with an avoidance hole communicated with the cavity, and a lower end thereof is provided with an opening communicated with the cavity; the piston rod comprises a push-pull rod and a piston sleeved on the push-pull rod, an upper end of the push-pull rod runs through the avoidance hole, and the piston is movably and hermetically connected to an inner side wall of the housing by means of a sealing ring; an upper side of the mask is provided with a through first connecting cylinder, and a lower side thereof is provided with a flexible annular pad configured to fit with the face.

As various embodiments of the present disclosure related to an electronic cell separating apparatus using ultrasonic waves are described, a cell separating apparatus according to an embodiment may include: a fat removal body part; a handpiece including an ultrasonic wave generating unit electrically connected to the fat removal body part; a tip part provided in the handpiece; a temperature sensor unit for detecting the temperature of the tip part, the temperature sensor unit being provided in the tip part; an interlocked pump part for feeding cooling water to the tip part, the interlocked pump part being disposed in the body unit and being connected to the handpiece; and a controller for receiving a signal detected by the temperature sensor unit, and operating the interlocked pump part at a preconfigured temperature. In addition, there may be various other embodiments related to the cell separating apparatus.

A method for accurately, rapidly and consistently cutting an opening in drape material for negative pressure wound therapy (NPWT) uses a cutting device that includes a plurality of cutting members that can extend from a bottom surface of the cutting device. A cover may fit over the bottom to protect the cutting members. The cutting members may be positioned to define a cut-out shape having dimensions designed for use with a NPWT system. An adhesive material may be formed on the bottom surface of the cutting device, inside of the cut-out shape defined by the cutting members. In use, the user presses the cutting tool onto the drape to cause the cutting members to cut into the drape and the adhesive to stick to the drape. When the user lifts the device, the drape, cut to the correct size and shape, is removed from the foam dressing covering the wound.