Ophthalmic surgical device and ophthalmic surgical cassette

By setting up a pressing wall section and an injection fluid storage chamber in the injection path, and utilizing the trapped air to absorb pressure fluctuations, the pulsation problem caused by peristaltic pumps is solved, achieving a balance between injection pressure stability and response speed, and simplifying the device structure.

CN122123828APending Publication Date: 2026-06-02NIDEK CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NIDEK CO LTD
Filing Date
2025-11-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Peristaltic pumps are prone to causing pulsation in infusion pump applications, which affects the stability of intraocular pressure, and existing technologies are unable to effectively suppress this effect.

Method used

The design incorporates an infusion path, a peristaltic infusion pump, and an infusion fluid storage chamber. By setting up a pressing wall section and an infusion fluid storage chamber in the infusion path, pressure fluctuations are absorbed by trapped air, suppressing the effects of pulsation. The pump and sensor control the infusion pressure by reducing the chamber pressure.

Benefits of technology

It effectively suppresses the pulsation effect caused by peristaltic pumps, ensures the stability of injection pressure and response speed, adapts to the injection path requirements of different materials and sizes, and simplifies the device structure.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122123828A_ABST
    Figure CN122123828A_ABST
Patent Text Reader

Abstract

This invention provides an ophthalmic surgical apparatus and cassette capable of appropriately suppressing the effects of pulsation caused by a peristaltic pump. The ophthalmic surgical apparatus includes an infusion path, a peristaltic infusion pump, and an infusion fluid reservoir. The infusion path allows infusion fluid supplied from an infusion fluid source to pass through to surgical instruments. The peristaltic infusion pump is located within the infusion path and changes the pressure within the path by utilizing multiple pump rollers that rotate while pressing against the flexible infusion path. The infusion fluid reservoir is located in the path between the peristaltic infusion pump and the surgical instruments, storing the infusion fluid with an airtight interior.
Need to check novelty before this filing date? Find Prior Art