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Endoscope bending tube and endoscope provided with endoscope bending tube
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An endoscope and bending tube technology, applied in the field of endoscopy, can solve problems such as pain, inability to bend the bending part, and patient discomfort.
Active Publication Date: 2017-02-22
OLYMPUS CORP
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[0009] However, in the conventional endoscope disclosed in International Patent Publication No. WO2013-190910, only the front end side region of the bending portion can be bent at a desired angle first, but when the bending portion is further bent There is a problem that the entire curved part cannot be bent with the same radius of curvature
[0010] Therefore, when the conventional endoscope is inserted into a complex body cavity with multiple branches, such as a bronchi, there is a problem that the base end side of the curved portion is bent so as to apply force to the bronchial wall, which may cause serious pain to the patient. Uncomfortable, painful, etc., making it difficult to perform a small rotation of the insertion part in the subject
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Deformed example 1
[0074] First, use Figure 8 Modification 1 will be described.
[0075] In the above embodiment, an example was shown in which two regions (first and second curved pipe regions 21a, 21b) are provided on the front end side and the base end side of the curved pipe 21, and each curved pipe 21 region Bending slits having different widths in the longitudinal axis direction of the bent tube are provided at different intervals inside.
[0076] On the other hand, in this modified example, the structure in which the area|region provided in the curved pipe 21 is divided into three stages is demonstrated.
[0077] That is, if Figure 8 As shown, a first curved pipe area 21a is set on the front end side of the curved pipe 21 of this modification, and the width of the curved pipe in the longitudinal axis direction is set in parallel with the interval d1 in the first curved pipe area 21a. A plurality of bending slits 24 for w1. In addition, a second curved pipe region 21b is set at a posit...
Deformed example 2
[0084] Next, use Figure 9 A second modified example will be described.
[0085] here, as Figure 9 As shown, this modification shows a structure in which a first curved pipe region 21a-2, a second curved pipe region 21b-2, a third curved pipe region 21c-2, a Four curved tube area 21d-2.
[0086] In the first curved pipe region 21a-2, a plurality of bending slits 24au are provided on the upper side of the curved pipe 21, and a plurality of bending slits 24ad are provided on the lower side. In addition, in the second curved pipe region 21b-2, a plurality of bending slits 24bu are provided on the upper side of the curved pipe 21, and a plurality of bending slits 24bd are provided on the lower side. In addition, in the third curved pipe region 21c-2, a plurality of bending slits 24cu are provided on the upper side of the curved pipe 21, and a plurality of bending slits 24cd are provided on the lower side. Furthermore, in the fourth curved pipe region 21d-2, a plurality of ben...
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Abstract
Provided is an endoscope bending part in which a first bending tube region (21a) and a second bending tube region (21b) which have mutually different bending characteristics are positioned from the distal end side of a bending part (21) to a base end side thereof. The slit width (w1) of each of a plurality of bend slits (24) arrayed on bend tube region (21a) is set to be narrower than the slit width (w2) of each of a plurality of bend slits (25) arrayed on bend tube region (21b), and with respect to adjacent bend slits, the width between the distal end side bend slits is set to be narrower than the width between the base end side bend slits. The spacing between the adjacent bend slits of the slit array of the bend region located at the distal end side is set to be narrower than the spacing between the adjacent bend slits of the slit array of the bend region located at the base end side.
Description
technical field [0001] The present invention relates to a curved tube for an endoscope disposed in a bending portion that is operated by an operation member provided in the operation portion, and an endoscope having the curved tube for an endoscope disposed in the bending portion. Perform a bending motion. Background technique [0002] In recent years, endoscopes inserted into a subject are widely used in medical and industrial fields. [0003] In particular, endoscopes used in the medical field can observe organs in the body cavity by inserting the elongated insertion part into the body cavity of the subject, or use the penetrating insertion of the treatment instrument included in the endoscope as needed. The disposal equipment in the channel performs various disposals. [0004] Among such endoscopes, there is known a configuration in which an insertion portion has a freely bendable bending portion in order to improve the insertion property into a subject. Usually, a con...
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