Catheter Device for Percutaneous Procedures
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Abstract
The invention relates to a catheter device (1) for percutaneous interventions, in particular for injections, biopsies or the like, with an outer catheter (2) and with a tool for the intervention, in particular an injection needle (3), biopsy forceps, electrodes or the like, at the proximal end (4) of the catheter device (1). To be able to perform a percutaneous intervention free of injury, the tool is received in the outer catheter (2) in the delivery state, and the tip of the tool is recessed in the outer catheter (2) in the delivery state or aligned with the proximal end of the outer catheter (2), and the tool can be moved relative to the outer catheter (2) in such a way that at least the tip of the tool protrudes past the proximal end (4) of the outer catheter (2) in the state of engagement.
50 Citations
36 Claims
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1-18. -18. (canceled)
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19. A catheter device for percutaneous procedures, with an outer catheter and a tool for the procedure, on the proximal end of the catheter device,
wherein the tool in the feed state is accommodated in the outer catheter and the tool tip of the tool in the feed state is retracted into the outer catheter or aligned flush with the proximal end of the outer catheter; -
wherein the tool can be moved with respect to the outer catheter, so that at least the tool tip protrudes beyond the proximal end of the outer catheter in the procedure state; wherein a stop is provided to limit the procedure depth of the tool during the procedure; wherein the stop in the deployed procedure state protrudes in the radial direction beyond the outer catheter; wherein the stop has at least one elastic stop device arranged within the outer catheter in the feed state, and the stop device deploys and opens outward during deployment of the tool; and wherein the stop device is designed as spring arms, characterized in that the stop has an extent in the radial direction in the procedure state that is several times larger than the outside diameter of the outer catheter; wherein the inner contour of the stop device corresponds to the outer contour of the tool in the area of the tool tip. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification