Head structure of spreader

By designing the head structure of the retractor and utilizing the cross design of the central rod and blades, as well as the limiting structure, the problem of the retractor being prone to bending when supporting heavy organs was solved, achieving high strength and stable operation and reducing surgical risks.

CN224193516UActive Publication Date: 2026-05-05VHMED NANTONG CO LTD
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Patent Information

Application Number
CN202520094623.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2026-05-05
Estimated Expiration
2035-01-15

AI Technical Summary

Technical Problem

Existing retractors are prone to bending when supporting critical organs, which affects the surgical process and increases surgical risks.

Method used

A head structure for a spreader is designed, including a central rod, a rear blade, a front blade, an outer tube, a handle, a rotating wheel, a fixing pin, and a shaft. The rotating wheel controls the extension and retraction of the central rod, which drives the opening and closing of the rear and front blades. The shaft connection increases strength and stability, and the opening angle is controlled by a limiting structure.

Benefits of technology

The structural strength and operational stability of the spreader have been improved, ensuring that the blades unfold within a controllable range, avoiding folding or reverse opening, and enhancing surgical safety.

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Abstract

The utility model discloses a head structure of a spreader. The head structure comprises a center rod, a rear blade, a front blade, an outer pipe, a handle, a rotating wheel, a fixing pin and a pin shaft. The rotating wheel is arranged at the tail end of the handle; the handle is fixedly provided with an outer tube; the center rod sequentially penetrates through the outer pipe and an inner cavity of the handle to be connected with the rotating wheel, and the rotating wheel is rotated to drive the center rod to stretch out and draw back. A pair of front blades is mounted at the front end of the center rod through a pin shaft; the front end of the outer pipe is connected with a pair of rear blades through a fixing pin; and the rear blade is connected with the front blade through a pin shaft. The center rod is controlled to stretch out and draw back through rotation of the rotating wheel, the rear blade and the front blade are driven to be opened and closed, all parts are connected through the pin shafts, and the strength of the instrument and the operation stability are improved.
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