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Suction button assembly for endoscope

An endoscope and button technology, which is applied in the field of endoscope suction button components, can solve the problems that the plunger cannot return, the friction resistance of the plunger is large, etc.

Inactive Publication Date: 2012-04-11
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frictional resistance can be so great that the plunger can fail catastrophically, for example, even if the capping mechanism is biased when the plunger is not depressed, the plunger will not return to its original position

Method used

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  • Suction button assembly for endoscope
  • Suction button assembly for endoscope
  • Suction button assembly for endoscope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] exist figure 1 In this example, an endoscope 10 is a bronchoscope and includes an elongated tube 11 or guide tube, an operating unit 12 and a universal cable 13 . The elongated tube 11 enters the bronchi which is a body cavity. The operation unit 12 is provided at the proximal end of the elongated tube 11 . The endoscope system used includes a processing device (not shown) and a light source device (not shown). A universal cable 13 is connected to these devices.

[0058] An instrument channel 14 is formed in the elongated tube 11 for entry of forceps or other instruments for treatment. A distal instrument opening 15 is provided at the distal end of the instrument channel 14 and opens into the distal surface of the elongated tube 11 . The proximal instrument opening 16 is provided at the proximal end of the instrument channel 14 and opens into the operating unit 12 . A sealing cap (not shown) fits within the proximal instrument opening 16 for normal closure prior t...

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PUM

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Abstract

The invention discloses a suction button assembly for an endoscope. The endoscope includes an operation unit, an elongated tube, a distal opening, a suction channel, and a discharge conduit. The suction button assembly has a valve structure for changing over between the discharge conduit and the suction channel for communication and shut-off. The suction button assembly includes a plunger, a first stem end, and a valve opening of the plunger. A cap device is coupled to the first stem end and to the first cylinder end of a cylinder housing in the operation unit, and around the first stem end. A first regulating device prevents the plunger from rotating in the cap device. A second regulating device prevents the cap device from rotating about an axis of the cylinder housing, to keep the valve opening aligned with a flow opening of a cylinder passage of the cylinder housing.

Description

technical field [0001] The invention relates to a suction button assembly of an endoscope. More specifically, the present invention relates to an endoscopic suction button assembly in which the suction of fluid from a body cavity can be precisely controlled. Background technique [0002] An endoscope includes an operating unit and an elongated tube extending distally from the operating unit. The elongated tube includes a suction channel and a distal opening. The suction channel extends in the axial direction. The distal opening is formed in the distal surface of the elongated tube as the distal end of the suction channel. The attraction button component is included in the action unit. A specific example of a suction channel is an instrument channel for threading forceps or other medical instruments and for supplying washing water and the like. Part of the suction channel is a branch of the instrument channel and connects to the suction button assembly. [0003] In addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/015A61B1/00
CPCA61B1/00068A61B1/2676A61B1/00119
Inventor 山根健二
Owner FUJIFILM CORP