76 results about "Thoracic cavity drainage" patented technology

An apparatus for the introduction of a drainage tube into a patient's chest cavity, comprising a housing having a distal end, a proximal end, and a longitudinal axis; a scalpel operable in a protruding position between a closed position in which the cutting portions are adjacent one another and adapted to make an incision in the dermis of the patient, and an open position in which the cutting portions are spaced from one another forming a scalpel passage along the longitudinal axis between the cutting portions. The apparatus further comprising a trocar comprising first and second trocar portions, each extending along the length of the trocar; the trocar being operable between an closed position wherein the first and second trocar portions are substantially adjacent one another, and a closed position in which the first and second trocar portions are spaced from one another and adapted for the introduction of the drainage tube therethrough.

A valve for use in a chest drainage device is disclosed, the chest drainage device is adapted to receive liquid and air from a patient's chest cavity via an inlet and to permit air to escape through an outlet for air to leave the chest drain, the inlet and outlet define a flow path and the valve is disposed along the flow path. The valve has a valve element that separates an upstream chamber from a downstream chamber and has a first and second sealing surface that are opposed so that when the first and second sealing surfaces are in contact, air pressure below a predetermined value will be prevented from moving from the downstream location to the upstream location. The valve element allows air to move from the upstream chamber to the downstream chamber at a low pressure differential. A pressure relief actuating element is disposed in the valve and located adjacent the valve element such that when the predetermined sub-atmospheric pressure limit between the upstream side and the downstream side is reached or exceeded, the valve element deforms and contacts the pressure relief actuating element such that the post causes the first and second sealing surfaces to partially separate and reduce the pressure differential.

Devices and to methods for thoracic drainage for a patient having an air fistula. A vacuum is produced in the pleural cavity of the patient by means of a suction device. In order to adjust the vacuum on the basis of objective criteria, a suitable size measure for the air fistula is determined and the vacuum produced by the suction device is controlled according to said size measure. An adaptive algorithm includes: (a) determining a first value of a size measure for the air fistula; (b) changing the vacuum by a first difference value; (c) determining a second value of the size measure after a first waiting period; (d) changing the vacuum by a second difference value having the opposite sign if the second measure is greater than the first measure; (e) repeating steps (a) to (d) after a second waiting period.

The invention relates to the technical field of medical instruments, and discloses a clinical intelligent thoracic cavity drainage device. A drainage bottle is provided with a negative pressure apparatus, a liquid inlet end, a liquid level sensor used for sensing the amount of hydrops in the drainage bottle, a camera used for shooting the internal state of the drainage bottle, a controller and a storage battery, and the liquid inlet end is provided with a flow speed control mechanism; the controller can calculate the hydrops increment in the drainage bottle according to signals fed back by theliquid level sensor and can regulate and control the working states of the negative pressure apparatus and the flow speed control mechanism on the basis of the hydrops increment and preset drainage amount and drainage time, and timed drainage and quantitative drainage are achieved. The clinical intelligent thoracic cavity drainage device adopts an intelligent design, can automatically control thedrainage state, can realize timed and quantitative drainage, reduces manual operation links, can avoid adverse effects caused by improper manual operation, avoids the defect of hydrops overflow in the drainage bottle, and is particularly suitable for clinical drainage of a large amount of hydrops in the thoracic cavity.