Guide device

Abstract

A guide device which can be easily inserted into the interior of the body, can selectively and easily puncture the pericardium even if used by being inserted from the xiphisternum, and can reliably detect that the guide device has reached the interior of the pericardium. A guide device (1) is provided with: a tubular insertion section (2) adapted to be inserted into the interior of the body and open in the vicinity of the tip thereof and on the base end side thereof; a puncture section (3a) provided to the tip of the insertion section (2) and puncturing tissue; a movable section (3) provided to the vicinity of the tip of the insertion section (2) so as to be displaceable between a proximity position at which the movable section (3) is in the proximity of the insertion section (2) and a protruding position at which the movable section (3) protrudes further from the insertion section (2) than the proximity position; a pressing mechanism (4) for pressing the movable section (3) in the direction in which the movable section (3) protrudes from the insertion section (2); and a displacement detection mechanism (5a) for detecting the displacement of the movable section (3) within the interior of the body.

Description

technical field [0001] The invention relates to a guiding device. Background technique [0002] Conventionally, in heart surgery, it is known to percutaneously treat the heart by inserting a cardiac treatment instrument inserted into the body into the pericardium through a perforation formed in the pericardium. Insertion of the cardiac treatment instrument into the pericardium is performed, for example, in the following procedure. First, the puncture needle is inserted from the lower part of the xiphoid process, the pericardium is punctured, and the tip of the puncture needle is placed in the pericardium. Thereafter, a guide wire is inserted along the lumen of the puncture needle, and the tip of the guide wire is placed at a desired position in the pericardium. Next, the puncture needle is pulled out while the guide wire is kept indwelling, the sheath is inserted into the pericardium along the guide wire, and the guide wire is pulled out while the sheath is kept indwelling...

AI Technical Summary

Problems solved by technology

However, since the X-ray fluoroscopy image is a two-dimensional image, it is difficult to accurately grasp the relative position between the tip of the puncture needle and the tissue

In particular, it is difficult to tell whether the tip of the needle has reached the pericardium since it is the pericardium that does not show up on the fluoroscopy image

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