Bird brain three-dimensional positioning device

By designing a bird brain stereoscopic positioning device with a retractable inner ear rod, a flexible outer sleeve rod, and bilateral beak angle locators, the problems of sound transmission obstruction and insufficient support in auditory experiments were solved, improving the accuracy of the experiment and the comfort of the animals.

CN224387585UActive Publication Date: 2026-06-23ZHENGZHOU UNIV
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Patent Information

Application Number
CN202521161118.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-09
Publication Date
2026-06-23
Estimated Expiration
2035-06-09

AI Technical Summary

Technical Problem

Existing stereotaxic devices for birds have problems in auditory experiments, such as obstructed auditory stimulus transmission, insufficient support of the beak rod on one side, and risk of skull injury, which affect the accuracy of the experiment and the comfort of the animals.

Method used

A stereoscopic positioning device for bird brains was designed, which uses a retractable inner ear rod, an outer sleeve rod with flexible material, and a beak angle locator that runs through both sides. Combined with the apical cone and beak locator, it provides stable support and keeps the ear canal open, reducing sound blockage and skull damage.

Benefits of technology

It significantly alleviated the problems of sound blockage and insufficient support, improved the accuracy of auditory experiments and the comfort of animals, and provided better sound propagation conditions.

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Abstract

The utility model relates to the technical field of bird auditory perception system research, in particular to a three-dimensional positioning device for a bird brain, which is suitable for small and medium-sized birds and comprises a bottom plate, an ear canal positioner, a beak angle positioner and a beak-mouth positioner. A stand column is arranged on the bottom plate, and the lug rod is fixed to a cross arm of the stand column. The ear canal positioner comprises a left stand column, a right stand column, a left ear rod and a right ear rod, each lug rod comprises an inner lug rod, an outer side sleeve rod, a tip cone and a fastening threaded nail; the outer side sleeve rod can horizontally move and slide along the inner lug rod, and the position of the outer side sleeve rod is fixed through a fastening threaded nail. The beak-corner positioner comprises a side plate, a beak rod and a locking threaded nail; the beak and mouth positioner comprises a base, a positioning stand column, a beak and mouth positioning head and a pressing ring. The base can slide horizontally. According to the utility model, the phenomena of ear canal blockage and poor support caused by a traditional embedded ear rod and a single-side beak rod are obviously reduced, and the listening range and the listening effect of a bird auditory perception system to sound stimulation are greatly improved.
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