Negative pressure device for treating and removing fluid from a wound has a housing having a first end connectable to the wound and an opposite second end, wherein the-housing is in a single piece, hollow and cylindrical. A piston slides inside the housing to generate the negative pressure, and a constant-force mechanism is loaded and activates the piston, the constant-force mechanism is fixed to the second end of the housing and to the piston and is placed inside the housing. A valve system draws air from the housing when the piston slides towards the first end and brings fluid into the housing when the piston slides towards the second end. The constant-force mechanism is entirely contained inside the housing, and the piston and the second end of the housing comprise a rear opening such as to allow a user to manually slide the piston and load the constant-force mechanism.

An apparatus for negative-pressure treatment may include an enclosure having a variable volume compressible to a minimum volume, a port and an actuation surface. The apparatus may include a first one-way valve configured to allow fluid ingress to the enclosure, a second one-way valve configured to allow fluid egress from the enclosure, and an actuator configured to apply a compressive force to the actuation surface. The apparatus may further comprise a motor coupled to the actuator to apply and remove the compression force and having an operating parameter indicative of the variable volume. The apparatus may further comprise a controller coupled to the motor and configured to turn on the motor to engage the actuator to alternately apply and remove the compressive force until the enclosure is compressed to the minimum volume and turn off the motor in response to the operating parameter indicating that the chamber is compressed to the minimum volume.

Systems, assemblies, and methods for providing negative-pressure therapy to a tissue site are described. The system can include an absorbent and a sealing layer configured to cover the absorbent. The system can also include a blister fluidly coupled to the absorbent. The blister may have a collapsed position and an expanded position. A first check valve may be fluidly coupled to the absorbent and the blister and configured to prevent fluid flow from the blister into the absorbent if the blister is moved from the expanded position to the collapsed position. A second check valve may be fluidly coupled to the blister and the ambient environment and configured to prevent fluid flow from the ambient environment into the blister if the blister is moved from the collapsed position to the expanded position.

A fluid temperature control device for an extracorporeal blood treatment apparatus, comprises: a casing (26) delimiting a heating/cooling seat (20) configured to accommodate a fluid warming bag (17) connected or connectable to an extracorporeal blood treatment apparatus (1); heating elements (29, 30) operatively active in the heating seat (20) to heat the fluid warming bag (17); at least a presence detector (32, 33) operatively active in the heating seat (20) to detect the presence of the fluid warming bag (17). The presence detector (32, 33) comprises an electromagnetic transmitter (34) and an electromagnetic receiver (35). The electromagnetic receiver (35) is positioned with respect to the electromagnetic transmitter (34) either to receive an electromagnetic radiation emitted by the electromagnetic transmitter (34) and reflected by the fluid warming bag (17) only when the fluid warming bag (17) is properly accommodated in the heating seat (20) or only when the fluid warming bag (17) is not properly accommodated in the heating seat (20).

A percutaneous drainage device for draining a fluid collection located under the skin of a patient is disclosed. The percutaneous drainage device includes a penetration component slidably engaged with a cannula. The penetration component has a piercing end adapted to penetrate tissue of a patient and introduce an open end of the cannula to a subcutaneous fluid collection site. The cannula may be held in place in the patient by an anchoring means. The cannula provides a passage through which a fluid collection may be drained from a patient. The cannula may be in fluid communication with a collection vessel, which collects fluid collection transported away from the subcutaneous fluid collection site.

A catheter connector assembly which may be included with a corporeal drainage system, and a method of draining fluid from a bodily cavity. The catheter connector assembly may include a catheter connector and a drainage line connector. The catheter connector may include a connector body with a coupling feature, a deformable sealing element, and a retaining member. The drainage line connector may include a drainage line body first and second hinge clips, and an actuator. The actuator is designed to deform the deformable sealing element when the drainage line connector is coupled to the catheter connector.

An apparatus (10) for controlling flow of fluid from a wound site of a patient including a cavity (28) connectable to a wound site and a reservoir (16). The cavity (28) may have a first deformed state, and a second state in which it is not deformed or less deformed than in the first state. The cavity (28) may be adapted to manage fluid flow between the wound site and the reservoir (16) during transition of the cavity (28) between the first state and the second state. An actuator element (64) of the apparatus (10) may be adapted to operate on the chamber (28) to transition the cavity (28) from the second state to the first state.

This disclosure relates to a medical aspirator with improved safety, and, more particularly, to a medical aspirator which stores a body fluid discharged from a human body in a storage container so as not be contaminated by air and discharges the stored body fluid through a discharge pipe installed in communication with the inside to the outside of the storage container, such that body fluid can be discharged without turning the storage container upside down and the body fluid can be prevented from being ejected due to a sudden pressure difference when a discharge line is opened.

An apparatus (10) for controlling flow of fluid from a wound site of a patient may include a chamber (28) connectable to a wound site and a reservoir (16). The chamber (28) may have a first deformed state, and a second state in which it is not deformed or less deformed than in the first state. The chamber (28) may be adapted to manage fluid flow between the wound site and the reservoir (16) during transition of the chamber (28) between the first state and the second state. An actuator element (64) of the apparatus (10) may be adapted to operate on the chamber (28) to transition the chamber (28) from the second state to the first state.

A catheter connector assembly which may be included with a corporeal drainage system, and a method of draining fluid from a bodily cavity. The catheter connector assembly may include a catheter connector and a drainage line connector. The catheter connector may include a connector body with a coupling feature, a deformable sealing element, and a retaining member. The drainage line connector may include a drainage line body first and second hinge clips, and an actuator. The actuator is designed to deform the deformable sealing element when the drainage line connector is coupled to the catheter connector.