Instrument applied to lacrimal passage probing

By using a threaded outer tube and inner core design and an airbag expansion mechanism, the problems of fixed diameter and stability of existing lacrimal duct probes are solved, achieving efficient and stable lacrimal duct expansion and reducing mucosal damage and operation time.

CN223668173UActive Publication Date: 2025-12-16YICHANG CENT PEOPLES HOSPITAL
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Patent Information

Application Number
CN202422941245.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-30
Publication Date
2025-12-16
Estimated Expiration
2034-11-30

AI Technical Summary

Technical Problem

Existing lacrimal duct probes have a fixed diameter, requiring frequent replacements, resulting in low surgical efficiency and easy damage to the mucosa. Existing devices also pose a risk of detachment during movement and cannot be gradually expanded as needed.

Method used

The design incorporates a threaded outer tube and an inner core, with an air bladder on the inner core. When the outer tube separates from the inner core, the air bladder inflates and expands. A limiting groove is provided on the inner wall of the outer tube to stabilize the position, enabling gradual expansion and stable operation.

Benefits of technology

It improves surgical efficiency, reduces mucosal damage, ensures the stability of the device during the expansion process, and avoids the psychological stress and operation time caused by repeated insertions and removals.

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Abstract

The utility model discloses an instrument applied to lacrimal passage probing, relates to the technical field of medical auxiliary appliances, and solves the problems that the diameter of an existing lacrimal passage probe is fixed, when the lacrimal passage dredging radius of a patient needs to be changed after the lacrimal passage probe is inserted, the lacrimal passage probe needs to be pulled out and inserted again, the operation efficiency is low, the operation time is increased due to multiple probing operations, and the operation difficulty is high. Psychological stress is caused to the patient; and repeated expansion easily causes lacrimal passage mucosa injury and aggravates postoperative inflammatory response. The utility model provides an instrument applied to lacrimal passage probing, which comprises an outer tube and an inner core, the outer tube is sleeved on the inner core, the inner core comprises a guide wire and a dilation cone which are integrally connected, and the outer tube is in threaded connection with the dilation cone; the guide wire is sleeved with an air bag, the air bag is arranged between the guide wire and the outer tube, and one end of the air bag is connected with the dilation cone. The outer diameter of the lacrimal passage can be expanded in the probing process, so that the lacrimal passage is expanded; and meanwhile, certain stability is achieved, and displacement cannot occur in the operation process.
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