WO2026113027 - CONTROLLABLE-BENDING MICROCATHETER
National phase entry is expected:
Publication Number
WO/2026/113027
Publication Date
04.06.2026
International Application No.
PCT/CN2024/136164
International Filing Date
02.12.2024
Title **
[English]
CONTROLLABLE-BENDING MICROCATHETER
[French]
MICROCATHÉTER À COURBURE RÉGLABLE
[Chinese]
一种可控弯微导管
Applicants **
MICROSTEER MEDICAL (SUZHOU) CO., LTD
Inventors
WANG, Ying
LIU, Yehong
ZHAO, Jiangqi
Priority Data
202422916596.1
28.11.2024
CN
202411723680.X
28.11.2024
CN
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
CNIPA
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Patent Delivery |
Send the Letters Patent by Courier
* |
| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1632 | |
| EPO | Filing, Examination, Granting | 11551 | |
| Japan | Filing, Examination, Granting | 2000 | |
| South Korea | Filing, Examination, Granting | 1835 | |
| USA | Filing, Examination, Granting | 4740 |

Total:
21,758
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Abstract[English]
Provided is a controllable-bending microcatheter, comprising a catheter body (2) and a base (1). The catheter body (2) comprises an inner tube (21) and an outer tube (23); the inner tube (21) and the outer tube (23) are fixed at a distal end, and the inner tube (21) and the outer tube (23) can be axially displaced relative to each other to bend a distal section. Transverse slots are formed in at least one of the inner tube (21) and the outer tube (23), and the slotting patterns of a proximal section and the distal section of the inner tube (21) and the outer tube (23) are different. Transverse slots (28) of the distal section have a fixed interval width, while transverse slots (27) of the proximal section have a gradually increasing interval width and are circumferentially displaced relative to each other. The distal end of the catheter body (2) is provided with a sensor (24), which can effectively detect the condition of the lumen environment, improve the treatment accuracy, and reduce the device loss and surgical risks.[French]
L'invention concerne un microcathéter à courbure réglable, comprenant un corps de cathéter (2) et une base (1). Le corps de cathéter (2) comprend un tube interne (21) et un tube externe (23) ; le tube interne (21) et le tube externe (23) sont fixés à une extrémité distale, et le tube interne (21) et le tube externe (23) peuvent être déplacés axialement l'un par rapport à l'autre pour courber une section distale. Des fentes transversales sont formées dans le tube interne (21) et/ou le tube externe (23), les motifs des fentes d'une section proximale et de la section distale du tube interne (21) et du tube externe (23) étant différents. Les fentes transversales (28) de la section distale présentent une largeur d'intervalle fixe, tandis que les fentes transversales (27) de la section proximale présentent une largeur d'intervalle augmentant progressivement et sont déplacées circonférentiellement les unes par rapport aux autres. L'extrémité distale du corps de cathéter (2) est pourvue d'un capteur (24) qui peut détecter efficacement l'état de l'environnement de la lumière, améliorer la précision de traitement et réduire les risques de perte de dispositif et les risques chirurgicaux.[Chinese]
一种可控弯微导管,包含导管本体(2)与基座(1),导管本体(2)包含内管(21)与外管(23),内管(21)与外管(23)在远端固定,内管(21)与外管(23)可以轴向相对位移以使远段弯曲。内管(21)与外管(23)至少一个管形成横向切槽,内管(21)与外管(23)的近段及远段的切槽方式不同。远段横向切槽(28)间隔宽度固定,近段横向切槽(27)间隔宽度逐步增大且相对周向位移。导管本体(2)远端设有传感器(24),可以有效检测管腔环境情况,提高治疗精度、降低器材损耗及手术风险。