Evidence map›Paper›PMID 42678652›Full record

ArticleMedical & biological engineering & computing2026

Improving practical steerability of a bidirectional steerable catheter for ERCP by non-straight wire routing.

Atsushi Yamada, Wataru Yonemichi, Ikuo Tooyama, Osamu Inatomi

Abstract read
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In one paragraph

Article in Medical & biological engineering & computing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Atsushi YamadaMedical Innovation Research Center, Shiga University of Medical Science, Otsu, Shiga, 520-2192, Japan. ayamada@belle.shiga-med.ac.jp.ORCID http://orcid.org/0000-0002-5493-5085
Wataru YonemichiTechnology Development Group, Zeon Medical Inc, Takaoka, Toyama, 933-0981, Japan.
Ikuo TooyamaMedical Innovation Research Center, Shiga University of Medical Science, Otsu, Shiga, 520-2192, Japan.
Osamu InatomiDepartment of Gastroenterology, Shiga University of Medical Science, Otsu, Shiga, 520-2192, Japan.

Funding

Iketani Science and Technology Foundation Iketani Science and Technology FoundationJapanese Foundation for Research and Promotion of Endoscopy Japanese Foundation for Research and Promotion of EndoscopyJSPS KAKENHI 23K28449JSPS KAKENHI 25K15932JSPS KAKENHI 26K15677
6 · The paper itself

Abstract

Endoscopic retrograde cholangiopancreatography (ERCP) requires reliable bile duct cannulation, yet steerability of wire-driven steerable catheters (SCs) can deteriorate when the shaft is constrained, partly because actuation may induce unintended shaft-side deformation and transmission loss. This study evaluated whether non-straight wire-routing architectures could improve practical steerability of a bidirectional SC for ERCP. Three prototypes were developed: a conventional straight-wiring design (SC#0), a non-straight, non-crossed design (SC#1), and a non-straight, crossed design (SC#2). Steerability was assessed by incremental wire-pulling tests under straight-shaft and loose-shaft conditions and by a mock ERCP study using an actual duodenoscope. Outcomes included the handle displacement and pulling force required to reach 85° distal bending (HD

Indexed as

CannulationCrossed wire routingERCPNon-straight wire routingSteerable catheter

Identifiers

PMID42678652

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.