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Treatment device for endoscope

A technology for treating instruments and endoscopes, which is applied in the direction of heating surgical instruments, parts of surgical instruments, medical science, etc., and can solve problems such as the increase in the outer diameter of connecting tubes

Active Publication Date: 2012-02-08
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the inner diameter of the connecting pipe is larger than twice the outer diameter of the loop line, and the outer diameter of the connecting pipe is larger than the inner diameter of the connecting pipe by the wall thickness of the connecting pipe. As a result, there is a problem that the outer diameter of the connecting pipe for fixing the loop line becomes larger.
[0009] In addition, in the treatment tool for endoscope as the stone retrieval basket type grasping tool described in the above-mentioned Patent Document 2, there is also the same problem as that of the above-mentioned Patent Document 1.

Method used

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  • Treatment device for endoscope
  • Treatment device for endoscope
  • Treatment device for endoscope

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0043] Below, take the case where the endoscope treatment tool is a high-frequency snare as an example, refer to Figure 1 to Figure 6 A first embodiment of the treatment instrument for endoscope of the present invention will be described.

[0044] Such as figure 1 As shown, the high-frequency snare 1 is a treatment tool used by being attached to the endoscope E1 by passing through the working channel E3 formed in the elongated insertion portion E2 of the endoscope E1.

[0045] The front-end surface of the insertion part E2 has the illuminating means E4 which irradiates illumination light forward, and the observation means E5 which detects light, respectively, in the exposed state. Light detected by the observation mechanism E5 can be displayed on a display unit not shown.

[0046] In addition, by operating the endoscope operating unit E6 connected to the proximal end side of the insertion unit E2, the bending portion E7 provided on the front end side of the insertion unit E...

no. 2 Embodiment approach

[0088] Next, a second embodiment of the present invention will be described. The same parts as those in the above-mentioned embodiment will be assigned the same reference numerals and description will be omitted, and only the differences from the above-mentioned embodiment will be described.

[0089] Such as Figure 11 As shown, instead of the snare wire 4 of the high-frequency snare 1 of the above-mentioned embodiment, a high-frequency snare (treatment instrument for endoscope) 41 of this embodiment has a snare wire 42 . The snare wire 42 is formed by integrally connecting the distal ends of two loop wires (elastic wires) 42a and 42b with a tip chip 43 and forming the two loop wires 42a and 42b in a ring shape. Furthermore, the base end portions of the loop wires (elastic wires) 42a and 42b are respectively fixed to the connecting member 5 .

[0090] According to the high frequency snare 41 comprised as mentioned above, the effect similar to the said embodiment can be exhibi...

no. 3 Embodiment approach

[0092] Next, a third embodiment of the present invention will be described. The same parts as those in the above-mentioned embodiment will be assigned the same reference numerals and description will be omitted, and only the differences from the above-mentioned embodiment will be described.

[0093] Such as Figure 12 As shown, instead of the snare wire 4 , the high-frequency snare (endoscopic treatment instrument) 46 of the present embodiment has a high-impedance snare wire 47 such as a nichrome wire. The snare wire 47 is formed in a ring shape, and is covered by a pair of insulating sheaths 48 from the front end side of the portion fixed by the connecting member 5 to the portion excluding the front end portion of the snare wire 47 . Furthermore, a sheath distal end passive electrode 49 is provided at the distal end portion of the sheath 2 .

[0094] According to the high-frequency snare 46 configured as described above, when the snare wire 47 is energized, the snare wire 47...

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Abstract

A treatment device for an endoscope, provided with a flexible sheath, an operation wire which is inserted in the sheath so as to be advanceable and retractable, a treatment section which consists of one or more elastic wires (4) provided so as to be able to enter and exit the inside of the tip side of the sheath, and a connection member (5) which affixes to each other the tip of the operation wire and the base ends of the elastic wires. The connection member is provided with a tubular body section (12), and also with wall sections (12, 13) which extend in the direction of the axis (C1) of thebody section from one end surface of the body section. The tip of the operation wire is affixed to the body section, ends of the elastic wires are affixed to the wall sections so as to extend in the direction of the axis, and in a view taken from the wall section side in the direction of the axis, at least one of the ends of the elastic wires is disposed at a position superposed on the body section.

Description

technical field [0001] The present invention relates to a treatment instrument for endoscope. More specifically, it relates to a treatment instrument for an endoscope used by advancing and retreating an operation wire inserted in a sheath. [0002] This application claims priority based on Japanese Patent Application No. 2009-142115 for which it applied in Japan on June 15, 2009, and uses the content here. Background technique [0003] Conventionally, endoscopic treatment tools of various configurations have been used to pass through a channel formed inside an endoscope. As one of such endoscopic treatment instruments, a treatment instrument for endoscope in which an end portion of a wire formed in a desired shape is fixed to a distal end portion of an operating wire inserted into a sheath has been studied. [0004] For example, Patent Document 1 describes an example in which the treatment tool for an endoscope is a high-frequency snare. In this treatment instrument for a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221A61B18/04A61B18/12A61B18/14
CPCA61B17/221A61B18/14A61B18/1445A61B18/1492A61B2017/00477A61B2017/2212A61B2017/2215A61B2018/00214A61B2018/1407
Inventor 铃木启太藤井秀基
Owner OLYMPUS CORP