Electrosurgical instrument, and an endoscope with a corresponding instrument

A technology of electrosurgery and endoscopy, applied in the field of endoscopy, can solve problems such as insignificant cost

Inactive Publication Date: 2010-09-22
ERBE ELEKTROMEDIZIN GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Electrosurgical instrument, and an endoscope with a corresponding instrument
  • Electrosurgical instrument, and an endoscope with a corresponding instrument
  • Electrosurgical instrument, and an endoscope with a corresponding instrument

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Embodiment Construction

[0064] The invention will be described below on the basis of several embodiments, which will be illustrated in more detail with the aid of the drawings.

[0065] In the following description, identical parts and parts functioning in the same way are provided with the same reference numerals.

[0066] figure 1 A highly schematic cross section of endoscope 10 is illustrated. The endoscope 10 includes a working channel 12 into which a protective tube 20 is introduced. Inside the protective tube 20 is a guide device 36 (not shown) in operative association with the needle electrode 30 . By means of the guide device 36 the needle electrode 30 can be moved in the distal and proximal direction within the protective tube 20 . exist figure 1 In the endoscope 10, the needle electrode 30 is located in the deployed position, and the end 31 of the needle electrode 30 (see image 3 and 4 ) protrudes from the distal end 21 of the protective tube 20 in the deployed position.

[0067] f...

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Abstract

In an endoscopic submucosal dissection (ESD), electrodes inserted via an endoscope are used to cut and/or coagulate the tissue. For the operation to succeed, it is essential to determine the absolute position of the electrodes within the tissue. However, poor viewing conditions and technical limitations make the correct determination of the position extremely difficult. The present invention therefore proposes to make available an electrosurgical instrument which comprises a protective tube, to be inserted into a working channel of an endoscope, and an electrode. A control element is used to move this electrode in a distal direction and a proximal direction inside the protective tube, wherein the electrode, by being moved in the distal direction, can be brought into a deployed position in which the electrode at least partially protrudes from a distal end of the protective tube. The distal end of the protective tube has a closure element with an opening for the passage of the electrode, wherein the opening of the closure element, for guiding and/or cleaning the electrode, has a maximum internal diameter smaller than the internal diameter of the protective tube.

Description

technical field [0001] The invention relates to an electrosurgical instrument and an endoscope with a corresponding instrument according to claim 1 and claim 15 respectively. Background technique [0002] EP 1293169B1 patent application discloses an endoscope. It contains at least one working channel into which a protective tube can be inserted. This protective tube is used to guide the instrument. In endoscopic submucosal dissection (ESD), the endoscope accommodates the needle cutting instrument. EP 1293169B1 patent application describes an electrosurgical instrument for coagulation. Instruments are also known for incision or resection, fine cutting and coagulation of tissue as required by means of high-frequency surgical methods. [0003] In a typical ESD, fluid is injected into the submucosa to lift the mucosa away from the muscularis to obtain a hollow space large enough for resection. Needle cutting instruments are preferably used in ESD. [0004] In endoscopic di...

Claims

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Application Information

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IPC IPC(8): A61B18/14A61B17/32A61B17/00A61N1/32
CPCA61B2018/1475A61M25/0084A61B18/1492A61M25/0068A61B2017/00269A61B2019/304A61B1/018A61M25/0082A61B2090/034
Inventor 克劳斯·菲舍尔马蒂亚斯·福格特伦德丹尼尔·谢勒玛拉·希拉赫拉尔斯·布洛贝尔伊琳·齐格勒
Owner ERBE ELEKTROMEDIZIN GMBH
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