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Device for aiding the percutaneous positioning of a guiding tube for a nephroscope in kidney surgery

A guide tube and nephroscope technology, applied in the direction of catheter, application, laparoscopy, etc., can solve the problem that the wound is difficult to achieve manually

Active Publication Date: 2009-12-16
COOK MEDICAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wound enlargement surgery is difficult to achieve manually, especially in terms of depth, and most of it is performed without visual monitoring. This operation does not always avoid muscle tears around the wound.

Method used

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  • Device for aiding the percutaneous positioning of a guiding tube for a nephroscope in kidney surgery
  • Device for aiding the percutaneous positioning of a guiding tube for a nephroscope in kidney surgery

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0010] [10] The present invention includes a placement device 1 for a guide tube for a nephroscope ( figure 1 ) consisting of a long puncture needle 2 equipped with an obturator core 3 over which slides an inflatable enlargement device 4 shorter than the puncture needle 2 and which acts as the operative Guide part of the inflatable dilation device, said inflatable dilation device 4 itself acts as a guide part of a guide tube for a nephroscope when it is placed in place on the patient. The puncture needle 2 includes a first needle end 5 cut into a bevel and a second needle end 6, and the second needle end includes a barrel 7, which surrounds the side of the second needle end, basically Rotating cylinder, preferably coaxial with the puncture needle 2, and the diameter of the needle cylinder is significantly smaller than the diameter of the guide tube that needs to be installed; the length of the puncture needle 2 is basically twice the length required to reach the renal pelvis, ...

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PUM

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Abstract

The invention relates to a device for positioning a guiding tube (1) for a nephroscope, said tube consisting of a long aspiration needle (2) which is provided with a closing mandrin (3) and on which an inflatable enlargement device (4) slides, said device especially comprising a cuff (25) which is positioned by sliding along the aspiration needle (2) that is previously inserted into the kidney of the patient. The operation is facilitated by a trocar consisting of cutting blades (19) which enlarge the opening without tearing any flesh. The cuff is then inflated so that the inflatable enlargement device (4) can be used as a guiding means for a guiding tube for a nephroscope during the positioning thereof in the kidney of the patient.

Description

technical field [0001] [01] The present invention relates to an auxiliary device for percutaneous placement of a guide tube for nephroscopy in renal surgery. Background technique [0002] [02] The guide tube to be installed is a sleeve made of plastic, which is translucent under X-rays, has a diameter of about 10 mm, and has a shoulder on one side of the outer end; there are currently many ways to install it This guide tube, also known as a "sheat"; begins by inserting a puncture needle (aiguille de ponction) with a diameter of 13 to 20 gauges (aiguille de ponction) from the surface of the skin all the way into the kidney; the puncture needle is a hollow Needle, which is closed over its entire length by a core during the insertion of the puncture needle into the renal stage, and which is then withdrawn when the insertion depth reaches the renal pelvis, in order to check for the presence of urine flow , the presence of a urine stream indicates that the tip of the needle is r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/06A61M29/00A61B1/00A61B1/313A61B17/34
CPCA61B17/3415A61B17/3403A61B17/3417
Inventor A·勒贝特
Owner COOK MEDICAL TECH LLC