Evidence map›Paper›PMID 41809781›Full record

ArticleTranslational andrology and urology2026

Efficacy analysis of a flexible-tip vacuum sheath combined with a 7.5F single-use digital ureteroscope in the treatment of upper urinary tract stones.

Yang Hong, Lizhe An, Luping Yu, Qingquan Xu, Tao Xu

Abstract read
In one paragraph

Article in Translational andrology and urology, 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

5 authors.

Yang HongDepartment of Urology, Peking University People's Hospital, Beijing, China.
Lizhe AnDepartment of Urology, Peking University People's Hospital, Beijing, China.
Luping YuDepartment of Urology, Peking University People's Hospital, Beijing, China.
Qingquan XuDepartment of Urology, Peking University People's Hospital, Beijing, China.
Tao XuDepartment of Urology, Peking University People's Hospital, Beijing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The management of upper urinary tract stones, particularly complex and lower pole calculi, remains a significant clinical challenge. This study aimed to evaluate the efficacy and safety of a novel technique combining a flexible-tip vacuum sheath with a 7.5F single-use digital ureteroscope, which is designed to overcome the limitations of traditional access sheaths. Methods: We performed a retrospective analysis of 74 patients with upper urinary tract stones treated between September 2024 and May 2025. All procedures were performed by a single surgeon using the combined technique. Primary outcomes were stone-free rate (SFR) assessed by computed tomography (CT) on postoperative day 1 and at 1 month, categorized as Grade A (absolute stone-free), Grade B (fragments ≤2 mm), Grade C (fragments 2.1-4 mm), and Grade D (fragments >4 mm). Secondary outcomes included operative time, hospital stay, basket usage, and complication rates. Results: The mean operative time was 105.95 minutes, and the mean postoperative hospital stay was 1.69 days. The SFR on postoperative day 1 was 75.68% for Grade A, 2.70% for Grade B, and 9.46% for Grade C. The final SFR at 1 month was 75.68% for Grade A, 2.70% for Grade B, and 16.21% for Grade C. A stone basket was used in 27 cases (36.5%), primarily for stone displacement (10 cases). No major complications occurred. Two patients (2.7%) experienced a transient fever below 38.5 ℃. Conclusions: The combination of a flexible-tip vacuum sheath and a 7.5F single-use digital ureteroscope is proven to be a highly effective and safe treatment modality, demonstrating high SFRs, a low complication profile, and reduced reliance on ancillary instruments.

Indexed as

complicationRetrograde intrarenal surgerysingle-use ureteroscopestone-free rate (SFR)vacuum sheath

Identifiers

PMID41809781
PMCPMC12968929

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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 Socratic graph.