Puncture instrument for punctured high frequency treatments
AssigneeFuji Photo Optical Co., Ltd.
InventorsKenji Abe, Mituo Kondo
Life of this patent
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Abstract
A puncture instrument capable of punctured high frequency treatments. The puncture instrument essentially includes: a guide tube to be inserted into an intracavitary portion of a patient; a puncture needle member having an elongated needle body slidably received in the guide tube, and a sharp-pointed needle head provided contiguously at the fore end of the elongated needle body and protrudable out of the guide tube to penetrate into a target intracorporeal portion to be treated when the needle body is manipulated in a forward direction; and a high frequency electrode provided on a fore end portion of the needle body to be penetrated into the target intracorporeal portion together with the sharp-pointed needle head.
Claims8
A puncture instrument to be introduced into a body cavity of a patient by way of an instrument channel of an ultrasound endoscope and penetrated into an intracorporeal portion for a high frequency treatment and for sucking out a body fluid under observation, which comprises:
- an ultrasound scanning device for said ultrasound endoscope, said scanning device including a transducer mounted on distal end of said ultrasound endoscope;
- a guide tube insertable into the body cavity of a patient through said instrument channel of said ultrasound endoscope;
- a puncture needle member including
- an elongated flexible body portion slidably received in said guide tube,
- a puncture needle head provided contiguously at a fore end of said elongated flexible body portion,
- a passage formed axially and internally through said flexible body portion of said puncture needle member and leading to an opening formed in said puncture needle head, and
- a high frequency electrode provided in said puncture needle head at least in a partly exposed state and connected to a wiring cable passed through said passage, said high frequency electrode including an aperture which communicates with said passage;
- a needle manipulator connected to a proximal end portion of said flexible body portion to move said puncture needle head back and forth between a retracted position within said guide tube and a protruded position extending out of said guide tube for penetration into a target intracorporeal portion to be treated;
- and
- a suction device connected to a proximal end portion of said passage to generate a suction force therein.
Dependencies are inferred from the claim text.