Treatment tool for endoscope

A technology for treating instruments and endoscopes, applied in the fields of endoscopy, applications, medical science, etc., can solve the problems of inability to scrape a large number of cells, cells falling into the body of the subject, etc.

Inactive Publication Date: 2014-06-11
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, not only there is a possibility that a large number of cells cannot be scraped off, but also there is a possibility that the cells scraped from the inner peripheral surface of the pipeline may fall into the subject.

Method used

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  • Treatment tool for endoscope
  • Treatment tool for endoscope
  • Treatment tool for endoscope

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ）

[0024] figure 1 It is a perspective view showing the treatment instrument for endoscope of this embodiment, figure 2 is along figure 1 Partial cross-sectional view of endoscopic treatment instrument in line II-II, image 3 yes means figure 2 Partial cross-sectional view of the state in which the arm portion of the cell extraction rod in the sample extraction tool is expanded in diameter from the tube, Figure 4 is a brief representation figure 2 A partial cross-sectional view of the method of defining the angle of inclination of the through-hole of the tube, Figure 5 will be figure 2 A partial perspective view showing enlarged top end side of the arm, Figure 6 yes means Figure 5 A partial perspective view of a modified example of the shape of the claw.

[0025] Such as figure 1 , figure 2 As shown, the treatment tool 1 for endoscope has a tube 3 and a sample extraction tool 4 to constitute main parts.

[0026] The tube 3 is formed to be elongated along the e...

no. 2 Embodiment approach ）

[0086] Figure 10 is along figure 1 A partial cross-sectional view of the endoscope treatment tool of this embodiment on the line VIII-VIII, Figure 11 yes means Figure 10 A partial cross-sectional view of a state in which the diameter of the arm of the cell extraction rod in the sample extraction tool is expanded from that of the tube.

[0087] The configuration of the treatment tool for endoscope according to the second embodiment is the same as that described above. Figure 1 to Figure 4 Compared with the treatment tool 1 for endoscope of the first embodiment shown in , by the relative movement between the tube and the specimen extraction tool, the claw portion of the cell extraction rod passes through the opening at the tip of the tube and is wider than the outer peripheral surface of the tube. The radial outer diameter expansion is different. Therefore, the same reference numerals are assigned to the same configurations as those of the first embodiment, and descripti...

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Abstract

This treatment tool for an endoscope: has arms (10a), mounting parts (10c), and claws (10b); and is provided with a sample collection tool (4) to which the base ends of the arms (10a) are secured, and a tube (3) within which the sample collection tool (4) is accommodated so as to be able to move freely back and forth. At least the claws (10b) increase in a diameter further to the outside in the radial direction (R) than the tube (3) due to the relative movement of the sample collection tool (4) and the tube (3). After the diameter increases, the arms (10a) are accommodated in the tube (3) due to the opposite relative movement of the sample collection tool (4) and the tube (3) to when the diameter increases.

Description

technical field [0001] The present invention relates to a treatment tool for an endoscope having a sample extracting tool for extracting cells or tissues from the inner peripheral surface of a tubular subject. Background technique [0002] The following technique is well known: after inserting the insertion part of the endoscope in the body of the subject to the vicinity of the entrance of a small-diameter pipeline such as the bronchial end of the lung, bile duct, pancreatic duct, etc., which cannot be inserted into the insertion part of the endoscope, the In the channel of the treatment instrument in the insertion part, in the small-diameter pipeline, insert the tube with the X-ray mark on the tip side to the vicinity of the inspected part in the small-diameter pipeline under X-ray observation, and then insert forceps, Specimen extraction instruments such as puncture needles are used to extract cells or tissues from the area to be examined. [0003] Cells or tissues at a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00A61B8/12A61B10/02A61B17/28A61B19/00
CPCA61B10/06A61B8/445A61B10/0266A61B1/00147A61B10/04A61B17/00234A61B1/018A61B1/00087A61B8/12A61B1/00148
Inventor 仁科研一伴笃
Owner OLYMPUS CORP
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