A manually-actuated, constant reduced-pressure apparatus for use with a reduced-pressure system for treating tissue at a tissue site includes a flexible, collapsible member that is operable to move between a compressed position and an extended position. The collapsible member may be disposed between a carrier member and a slider member that move between a compressed position and an extended position. The carrier member and slider member are urged away from each other by a constant-force biasing member, e.g., a constant force coil spring. As the apparatus moves from the compressed position to the extended position, a constant reduced-pressure is generated and delivered to a reduced-pressure port. Methods of manufacturing a manually-actuated, constant reduced-pressure apparatus and methods of treating a tissue site are also provided.

The present disclosure relates generally to the field of medical treatment and therapy of mammalian tissue. More specifically, it relates to coverings and/or dressings that provide negative pressure at mammalian tissue sites, such as at one or more sites of surgical, non-surgical, and/or traumatic wounds, to promote closure and healing of the wounds. A key embodiment of the disclosed invention entails the use of a dressing that comprises a sponge that is shaped so as to create a vector force inward bringing wound edges together to promote healing, especially upon application of negative pressure. Other key features of the disclosed invention are its simplicity, its low cost, and that it is completely mechanical and lacks the need for any electronic components. The disclosure also relates to devices, systems, kits and methods for providing said negative pressure at said mammalian tissue sites and promote healing.

A medical apparatus that includes an apparatus body that has a surface with an opening and a cover coupled to the apparatus body about an axis of rotation angled to the surface. The cover is operable to rotate about the axis of rotation to move between a first position wherein the cover closes the opening and a second position wherein the cover is moved to allow access to the opening.

Automatically-locking syringes are disclosed herein. A syringe in accordance with embodiments of the present technology can include (i) a barrel, (ii) a plunger slidably positioned within the barrel, and (iii) a lock plate coupled to the barrel. The plunger also extends through an opening in the lock plate, and a biasing member is configured to bias the lock plate to a locking position. When the plunger is moved from a depressed position to a withdrawn position, the lock feature engages the lock plate to drive the lock plate away from the locking position to thereby permit the lock feature to pass through the opening in the lock plate. After the lock feature passes through the opening, the biasing member drives the lock plate to the locking position to inhibit movement of the plunger from the withdrawn position to the depressed position.

A closed system for harvesting fat through liposuction, concentrating the aspirate so obtained, and then re-injecting the concentrated fat into a patient comprises as its main components a low pressure cannula having between about 7 to 12 side holes of about 1-2 mm by 2.0 to 4.0 mm, a spring loaded syringe holder with a constant force or coiled ribbon spring to apply a substantially constant pressure over the full excursion of the plunger, and a preferably flexible collection bag which is also preferably graduated, cylindrical over most of its body and funnel shaped at its bottom, all of which are connected through flexible tubings to a multi-port valve. The multi-port valve has two flutter/duck bill valves which restrict the fluid flow to a one way direction which effectively allows the syringe to be used to pump fat out of a patient and into a collection bag in a continuous manner. After the bags are centrifuged to concentrate the fat, the excess fluids are separated and the valve is re-connected to permit the syringe pump to reverse fluid flow to graft the concentrated fat back into the patient.

An incising and medicating syringe is described which is configured to form raised skin areas of effected skin and lance the skin to extract subdermal fluid and distribute medical ointment. The device is employed by placement of an aperture over the effective area whereafter translation of a plunger extends a lance which subsequently withdraws to absorb and contain the excreted fluid.

A drainage system includes a vacuum chamber to receive drainage liquid from a drainage tube. The chamber can include an input port coupled with the drainage tube and a drain port coupled with a collection container. The system can include an air pump having an input coupled with a vacuum port of the vacuum chamber and a distal end of the drainage tube. Activation of the air pump can establish circulating fluid flow between the drainage tube and the vacuum chamber, and deactivation of the air pump can permit drainage liquid to drain from the vacuum chamber into the output tube. Also disclosed is a method of draining liquid from a patient, including accumulating a volume of the drainage liquid at a first location along a drainage pathway, moving the volume to a second location, accumulating the volume at the second location, and moving the volume to a collection container.

Example embodiments may include an apparatus for providing negative-pressure therapy with a push-to-release actuator. The actuator may be a key insertable through a keyway in the apparatus to engage a movable barrier, such as a piston. The actuator may also be used to lock the barrier in a primed position. Pressing on the actuator can release the barrier and activate the apparatus for negative-pressure therapy. In some examples, the actuator may comprise a shaft, a latch, and a spring biasing the latch toward the shaft. The latch may comprise an opening toward a proximal end of the shaft. The apparatus may comprise a receptacle for receiving the actuator, and a keeper may disposed within the receptacle for coupling to the latch. In some embodiments, the keeper may comprise a base protruding from the wall, and a ledge extending from the base toward the second aperture.

A cannula device for draining sub-retinal fluid externally to the eye includes a shaft, an outer sleeve, and an inner sleeve. The outer sleeve and the inner sleeve have a curve therein to access the back of the eye externally. The outer sleeve is extendable relative to the inner sleeve and the shaft, and the outer sleeve includes a penetrative tip to penetrate the sclera and provide access to the sub-retinal fluid to the inner sleeve.

A breast milk pump includes a breast interface member which has an inner cavity through which milk can flow, and a negative pressure assembly in fluid communication with one side of a diaphragm. An opposite side of the diaphragm is in fluid communication with the inner cavity. The diaphragm separates the inner cavity from the negative pressure assembly. A suckling assembly includes a tongue member and an actuator coupled to the tongue member for causing movement of the tongue member. A tongue position adjustment assembly is coupled to the suckling assembly and operative to cause displacement of the suckling assembly with respect to an inner surface of the inner cavity.