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Publication Number
US-10987463-B2
Publication Date
2021-04-27
Expiration Date
Abstract
A handpiece for cleansing wounds with a fluid jet includes a main body, which has a front end with an emergence opening for the emergence of the fluid jet, wherein a porous body is present on the front end, which porous body surrounds the emergence opening and protrudes beyond the latter in the direction of the fluid jet outlet and forms a space through which the fluid jet can pass unimpeded. The handpiece according to the invention combines the advantages of cleansing by a fluid jet with the advantages of mechanical cleansing and, at the same time, provides effective protection against aerosols.
Core Innovation
The invention provides a handpiece unit for cleansing wounds with a fluid jet supplied by a fluid line and emerging as a microfluidic jet. The handpiece includes a main body with a front face having an emergence opening defined by a nozzle arranged in the front end, and a nozzle channel arranged centrally in the nozzle defines an emergence geometry of the microfluidic jet.
An adapter is releasable connectable to the front end of the handpiece and surrounds and receives the front end while surrounding the emergence opening. The adapter is transparent to permit view of the wound to be cleaned, and a porous body is connected to the adapter and protrudes beyond the emergence opening in a direction of the flow of the fluid jet emerging from the emergence opening.
The porous body defines a longitudinal central axis and a through-opening that forms a space through which the fluid jet can pass unimpeded. The porous body includes a contact area for contact with a wound to be cleaned, where the contact area extends perpendicularly with respect to the longitudinal central axis and extends at an angle other than 90 degrees with respect to the direction of the fluid jet, and the method cleans the wound by simultaneously cleansing with the fluid jet and treating with the porous body arranged on the handpiece.
Claims Coverage
The document includes two independent claims: a handpiece unit claim and a method claim. The claims share a central architecture of a microfluidic fluid jet defined by a nozzle channel, a releasable transparent adapter surrounding the emergence opening, and a protruding porous body with an unimpeded through-opening and a wound-contact area surrounding the through-opening end; the method claim further specifies simultaneous cleansing and treating.
Microfluidic wound-cleansing fluid jet with nozzle-defined emergence geometry
The handpiece includes a fluid line supplying fluid to a main body having a front face with an emergence opening defined by a nozzle, wherein a nozzle channel arranged centrally in the nozzle defines an emergence geometry of the fluid jet, the fluid jet emerging from the emergence opening being a microfluidic jet.
Releasable transparent adapter surrounding the emergence opening
The handpiece includes an adapter releasable connectable to the front end of the handpiece, the adapter surrounding and receiving the front end of the main body and surrounding the emergence opening, and the adapter is transparent, permitting view of the wound to be cleaned.
Porous body protruding beyond the emergence opening with an unimpeded through-opening
A porous body connected to the adapter protrudes beyond the emergence opening in a direction of a flow of the fluid jet emerging from the emergence opening, the porous body has a longitudinal central axis and a through-opening forming a space through which the fluid jet can pass unimpeded, and the fluid jet reaches an end of the through-opening surrounded by the contact area.
Inclined jet direction relative to porous-body longitudinal central axis and oriented wound contact area
The direction of the fluid jet flowing out of the emergence opening extends inclined relative to the longitudinal central axis, and the porous body has a contact area for contact with a wound to be cleaned, where the contact area extends perpendicularly with respect to the longitudinal central axis and extends at an angle other than 90 degrees with respect to the direction of the fluid jet emerging from the emergence opening.
Simultaneous cleansing and porous-body treatment of the wound
The method comprises simultaneously cleansing the wound by the fluid jet emerging from the handpiece and treating the wound by the porous body arranged on the handpiece.
Across both independent claims, the inventive coverage centers on delivering a microfluidic jet whose emergence geometry is set by a nozzle channel, directing the jet inclined relative to a porous body’s longitudinal central axis, and using a protruding porous body with an unimpeded through-opening and an oriented wound-contact area surrounding the through-opening end; a releasable transparent adapter surrounds the emergence opening to permit view of the wound.
Stated Advantages
Permitting view of the wound to be cleaned.
Documented Applications
Cleansing wounds using a handpiece unit delivering a microfluidic fluid jet while simultaneously treating the wound by a porous body arranged on the handpiece.
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