DETERMINING THE POSITION OF A NEEDLE
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Abstract
An arrangement for determining the position of a needle in an organ system and a method utilizing the arrangement in cosmetic treatment or cosmetic surgery. The arrangement (1) comprises a needle (2) with a distal tip (3), a measurement circuit (4) measuring the bioimpedance of tissues, a detection means (10) connected to the measurement circuit measuring bioimpedance and arranged to detect the progress of the distal tip (3) of the needle at a real-time basis from the bioimpedance measured from tissues. The arrangement (1) comprises at least two electrodes (16, 18, 21, 22) arranged at the distal tip (3) of the needle and connected to the measurement circuit (4). All the electrodes (16, 18, 21, 22) measuring impedance and needed for monitoring the progress of the distal tip (3) of the needle are arranged to the distal tip (3) of the needle.
19 Citations
46 Claims
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1-23. -23. (canceled)
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24. An arrangement for determining the position of a needle in an organ system, the arrangement comprising
a needle having a distal tip; -
a measurement circuit measuring the bioimpedance of tissues; a detection means, the detection means being connected to the measurement circuit measuring the bioimpedance and arranged to detect the progress of the distal tip of the needle in the tissue on a real-time basis from the bioimpedance measured from the tissues, the arrangement further comprising at least two electrodes arranged to the distal tip of the needle, the electrodes being coupled to the measurement circuit;
whereinall electrodes measuring bioimpedance and needed for monitoring the progress of the distal tip of the needle are arranged to the distal tip of the needle. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method in cosmetic treatment or cosmetic surgery, the method comprising the steps of
arranging for use a needle with a distal tip, in which needle all electrodes measuring bioimpedance and needed for monitoring the progress of the distal tip of the needle are arranged to the distal tip; -
arranging for use a measurement circuit measuring the bioimpedance of tissues, and a detection means that is connected to the measurement circuit measuring bioimpedance; arranging the detection means to detect the progress of the distal tip of the needle in the tissue on a real-time basis from the bioimpedance measured from the tissues; connecting the electrodes to the measurement circuit; inserting the needle into the patient'"'"'s tissue; and measuring the bioimpedance of the tissue.
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Specification