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US 9,955,991 B2Granted
Device for endoscopic resection or removal of tissue
AssigneeFrii SA
InventorRaffaele Riva
Life of this patent
Estimating the term…
Abstract
A device (1) for treatments of endoscopic resection/removal of tissues, includes: a handpiece apt to be held by an user; an external tubular element (3) having a proximal end, a distal end and a cutting aperture disposed at the distal end; an internal tubular element (4) apt to be pivotally housed in the external tubular element (3) and having a proximal end, a distal end and a cutting tip at its distal end; guide element (5) for rotating and/or oscillating the internal tubular element (4) with respect to the external tubular element (3); the guide element including an electric motor. At least one between the handpiece (2) and the guide element (5) is disposable.
Claims12
A device for treatments of endoscopic resection and removal of tissues, comprising:
- a disposable handpiece, the handpiece comprising a distal portion and a proximal portion that is directly engaged in a removable way with the distal portion, the handpiece having a longitudinal length with a longitudinal axis, with the distal portion and the proximal portion being axially aligned along the longitudinal length and the longitudinal axis;
- a disposable external tubular element comprising a proximal end and a distal end, the distal end defining a cutting window and including a first distal edge portion being a distalmost edge portion and a second distal edge portion proximal to the first distal edge portion, and a curved portion between said first and second distal edge portions, the distal end of the external tubular element being located on the longitudinal axis of the handpiece, the proximal end of the external tubular element being located within and terminating in a distal end of the distal portion of the handpiece;
- a disposable internal tubular element pivotally received in said external tubular element and comprising a proximal end, a distal end and a cutting tip at the distal end of the disposable internal tubular element, the distal end of the internal tubular element being located on the longitudinal axis of the handpiece and including a solid cylindrical outer surface with a substantially constant outer diameter and the proximal end of the internal tubular element being located within and terminating in the distal portion of the handpiece, wherein the distal end of the internal tubular element extends longitudinally past the second distal edge portion of the disposable external tubular element but not longitudinally past the first distal edge portion of the disposable external tubular element,
- wherein the internal tubular element is releasably supported within the distal portion of the handpiece;
- an externally accessible locknut that connects the external tubular element to the distal portion of the handpiece;
- a guide that rotates said inner tubular element with respect to said external tubular element such that a pivotal action of the inner tubular element produces, by abrasion, removal of tissue thereby resecting the tissue,
- wherein said guide comprises a control unit and an electric motor longitudinally aligned with an electric feeding member for said electric motor, said electric feeding member extending axially with respect to said electric motor in said longitudinal direction;
- and
- a body that extends axially inside both the distal portion and the proximal portion of the handpiece, the body housing said electric motor, said electric feeding member and said control unit, said control unit comprising at least a main electric circuit connected to internal pushbuttons positioned on the body and which permit selection of instructions to send to the main electronic circuit from outside of the handpiece, wherein,
- i) during use of said device, said distal portion of the handpiece includes external pushbuttons on an outer surface thereof, each external pushbutton disposed in an external position corresponding to an internal position of a corresponding one of said internal pushbuttons such that said external pushbuttons enable said selection of instructions to send to the main electric circuit from outside of the handpiece, and
- ii) when said distal portion of the handpiece, while supporting the internal tubular element and the external tubular element, is disengaged and removed from the proximal portion of the handpiece, said body is removable from and interchangeable with respect to the distal and proximal portions of the handpiece so that said body containing said electric motor, said control unit and said electric feeding member is reusable by removing said body from said handpiece prior to disposal of said handpiece, the internal tubular element, and the external tubular element.
8 more elements
A device for treatments of endoscopic resection and removal of tissues, comprising:
- a disposable handpiece, the handpiece comprising a distal portion and a proximal portion that is directly engaged in a removable way with the distal portion, the handpiece having a longitudinal length with a longitudinal axis, with the distal portion and the proximal portion being axially aligned along the longitudinal length and the longitudinal axis;
- a disposable external tubular element comprising a proximal end and a distal end, the distal end defining a cutting window and including a first distal edge portion being a distalmost edge portion and a second distal edge portion proximal to the first distal edge portion, and a curved portion between said first and second distal edge portions, the distal end of the external tubular element being located on the longitudinal axis of the handpiece, the proximal end of the external tubular element being located within and terminating in a distal end of the distal portion of the handpiece;
- a disposable internal tubular element pivotally received in said external tubular element and comprising a proximal end, a distal end and a cutting tip at the distal end of the disposable internal tubular element, the distal end of the internal tubular element being located on the longitudinal axis of the handpiece and including a solid cylindrical outer surface with a substantially constant outer diameter and the proximal end of the internal tubular element being located within and terminating in the distal portion of the handpiece, i) wherein the distal end of the internal tubular element extends longitudinally past the second distal edge portion, of the disposable external tubular element but not longitudinally past the first distal edge portion of the disposable external tubular element,
- wherein the internal tubular element is releasably supported within the distal portion of the handpiece;
- an externally accessible locknut that connects the external tubular element to the distal portion of the handpiece;
- a guide that oscillates said inner tubular element with respect to said external tubular element such that a pivotal action of the inner tubular element produces, by abrasion, removal of tissue thereby resecting the tissue,
- wherein said guide comprises a control unit and an electric motor longitudinally aligned with an electric feeding member for said electric motor and, said electric feeding member extending axially with respect to said electric motor in said longitudinal direction;
- and
- a body that extends axially inside both the distal portion and the proximal portion of the handpiece, the body housing said electric motor, said electric feeding member and said control unit, said control unit comprising at least a main electric circuit connected to internal pushbuttons positioned on the body and which permit selection of instructions to send to the main electronic circuit from outside of the handpiece, wherein,
- i) during use of said device, said distal portion of the handpiece includes external pushbuttons on an outer surface thereof, each external pushbutton disposed in an external position corresponding to an internal position of corresponding one of said internal pushbuttons such that said external pushbuttons enable said selection of instructions to send to the main electric circuit from outside of the handpiece, and
- ii) when said distal portion of the handpiece, while supporting the internal tubular element and the external tubular element, is disengaged and removed from the proximal portion of the handpiece, said body is removable from and interchangeable with respect to the distal and proximal portions of the handpiece so that said body containing said electric motor, said control unit and said electric feeding member are reusable by removing said body containing said electric motor and said electric feeding member from said handpiece prior to disposal of said handpiece, the internal tubular element, and the external tubular element.
8 more elements
Dependencies are inferred from the claim text.