Sheath, introducer sheath, introducer sheath assembly, and endoscope kit

By segmenting the outer skin and inner liner tube, the bending and support properties of the sheath tube are optimized, solving the problem of difficult insertion of the guide sheath in narrow or complex cavities, and realizing smooth insertion and stable operation of the guide sheath.

CN224370417UActive Publication Date: 2026-06-19HUNAN VATHIN MEDICAL INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN VATHIN MEDICAL INSTR CO LTD
Filing Date
2025-06-17
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

Existing guide sheaths are prone to obstruction during insertion, especially in narrow or complex cavities.

⚗Method used

The sheath is designed with segmented outer skin. The first outer skin segment near the distal end has low stiffness, while the second outer skin segment near the proximal end has high stiffness, which gradually increases along the axial direction. The inner liner tube has a spiral and axial bending slot on the distal side to optimize bending and support performance.

🎯Benefits of technology

It improves the bending performance of the sheath in narrow or complex cavities, reduces obstruction during insertion, ensures smooth insertion of the guide sheath, and provides reliable support and thrust transmission.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a sheath tube, a guide sheath, a guide sheath assembly and an endoscope kit, and relates to the technical field of medical devices. The sheath tube disclosed by the application is used for a guide sheath, and the sheath tube comprises an inner liner tube and an outer covering skin, and the outer covering skin is sleeved on the outer periphery of the inner liner tube, wherein: the outer covering skin comprises a first outer covering section and a second outer covering section, the first outer covering section is arranged on one side of the second outer covering section close to the distal end of the inner liner tube, and the rigidity of the first outer covering section is smaller than the rigidity of the second outer covering section. The above scheme can at least solve the problem that the guide sheath placement operation is blocked.
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