초록 ▼

A low vacuum wound drainage system comprising a high vacuum bottle having an on/off switch to allow/prevent release of the vacuum from the bottle, and a connector for connection of a wound drainage line such that a vacuum path is provided between the bottle and the wound drainage line when the on/of

A low vacuum wound drainage system comprising a high vacuum bottle having an on/off switch to allow/prevent release of the vacuum from the bottle, and a connector for connection of a wound drainage line such that a vacuum path is provided between the bottle and the wound drainage line when the on/off switch is in the on position. The wound drainage line is adapted to be detachably connected to the vacuum bottle via the connector to apply suction at a patient end of the line and includes a regulating valve incorporated in the detachable wound drainage line, the valve acting to continuously regulate the vacuum in the line, when the line is attached to the bottle, to provide a reduced vacuum at the patient end of the line. Also a wound drainage line including a regulating valve for use with a high vacuum bottle.

대표청구항 ▼

[ We claim:] [1.] A low vacuum wound drainage apparatus comprising a high vacuum bottle having on/off means to allow/prevent release of the vacuum from said bottle, and connector means for connection to a wound drainage line for establishing a vacuum path between said bottle and the wound drainage l

[ We claim:] [1.] A low vacuum wound drainage apparatus comprising a high vacuum bottle having on/off means to allow/prevent release of the vacuum from said bottle, and connector means for connection to a wound drainage line for establishing a vacuum path between said bottle and the wound drainage line when said on/off means is in the on position; said apparatus further comprising a detachable wound drainage line having a patient end and a second end and being adapted to be detachably connected to said vacuum bottle via said connector means to apply suction at said patient end of said wound drainage line; and a regulating valve incorporated in said detachable wound drainage line, said valve acting to continuously regulate the vacuum in said wound drainage line when said line is attached to said bottle to provide a reduced vacuum at said patient end of said wound drainage line; said valve comprising a valve spool slidingly located within a valve body and held by a spring, said valve body including a patient line port and a high vacuum port, said patient line port being connected to a section of said wound drainage tube which leads to said patient end and said high vacuum port being connected to a section of said wound drainage tube which leads to said high vacuum bottle; the spring rate and the cross-sectional area of said valve spool being selected to control the degree of vacuum reduction from the high vacuum of said bottle to said patient end of said wound drainage line, the return force of said spring and the pressure at said patient end of said wound drainage line acting on a first side of said spool and the external atmospheric pressure acting against a second opposite side of said spool, the forces acting on the opposite sides of said spool being equal when the vacuum in said wound drainage line at said patient end thereof is the required low vacuum.