System for assisting injection in intraocular surgery

By mounting targeting and injection instruments on the surgical robot arm, and using laser aiming to maintain the robot arm's orientation, axial movement of the surgical instruments was achieved. This solved the problem of non-linear instrument movement in minimally invasive intraocular surgery, improved injection accuracy and safety, and reduced complications.

CN121265355APending Publication Date: 2026-01-06CARL ZEISS MEDITEC AG
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Patent Information

Application Number
CN202510844299.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-07-03
Filing Date
2025-06-23
Publication Date
2026-01-06

AI Technical Summary

Technical Problem

In minimally invasive intraocular surgery, existing techniques make it difficult to achieve linear or axial movement of surgical instruments, leading to risks and complications in vitrectomy, especially subretinal injections, which can easily cause retinal tears and cataract formation.

Method used

Using a targeting instrument and an injection instrument mounted on the surgical robot arm, the robot arm is aimed at the target position and its orientation is preserved by a laser device. Then, it is replaced with an injection instrument for axial movement, avoiding direct contact between the surgical instrument and the retina.

Benefits of technology

It improves the precision and safety of injections, reduces the need for vitrectomy, lowers surgical time and costs, and reduces eye complications in patients' lives.

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Abstract

Disclosed herein are system, apparatus, articles of manufacture, methods, computer program product embodiments, and combinations and sub-combinations thereof for assisting an injection in an intraocular procedure, comprising: a robotic arm; a control unit configured to control the robot arm; a targeting instrument mounted on the robotic arm, where the targeting instrument is configured to aim at a target location, where an orientation of the robotic arm in a direction of the target location is saved in a memory of a control unit for access, and where the targeting instrument is further configured to be replaced with an injection instrument; and the injection instrument mounted on the robotic arm, where the injection instrument is configured to be positioned in a preserved orientation of the robotic arm at the target location, and where the injection instrument is further configured to inject into the target location.
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