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Systems and methods for non-invasive measurement of cassette pressure

A sensing system and pressure technology, applied in measuring devices, pressure sensors, measuring fluid pressure, etc., can solve the problem of increasing the cost of disposable cartridges, and achieve the effect of accurate internal pressure

Inactive Publication Date: 2019-04-02
NOVARTIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These sensors also add to the cost of the disposable cartridge

Method used

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  • Systems and methods for non-invasive measurement of cassette pressure
  • Systems and methods for non-invasive measurement of cassette pressure
  • Systems and methods for non-invasive measurement of cassette pressure

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Embodiment Construction

[0014] Exemplary embodiments relate to surgical systems, such as consoles used in ophthalmic surgery. The following description is presented to enable any person of ordinary skill in the art to make and use the invention, and is provided in the context of a patent application and its requirements. Various modifications to the exemplary embodiments, and general principles and features described herein will be readily apparent. The exemplary embodiments are described primarily in terms of specific methods and systems presented in the detailed description. However, these methods and systems will operate effectively in other embodiments. Phrases such as "exemplary embodiment," "one embodiment," and "another embodiment" can refer to the same or different embodiments, as well as to multiple embodiments. The embodiments will be described with respect to systems and / or devices having certain components. However, these systems and / or devices may include more or fewer components than...

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PUM

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Abstract

A method and a system provide a surgical system including a cassette, a console and an interferometric pressure sensing system coupled with the console. The cassette is for exchanging material with apatient and includes a wall and a reflector. The wall undergoes a deflection in response to a nonambient internal cassette pressure. The console is coupled with the cassette. The interferometric pressure sensing system is coupled with the console. The interferometric pressure sensing system includes a light source and a detector. The light source provides a first portion of light that is reflectedoff of the reflector and a second portion of light that bypasses the reflector. The first portion and the second portion of light are recombined to form an interference pattern. The deflection corresponds to a shift in the interference pattern detectable by the detector.

Description

technical field [0001] The present disclosure relates to ophthalmic surgery systems and methods. More specifically, the present disclosure relates to techniques for measuring cassette pressure in surgical systems. Background technique [0002] Ophthalmic surgery often involves removing fluid and / or tissue from the eye and replacing the removed material with a fluid such as balanced salt solution (BSS). To remove the material, a cannula connected to a suction line is inserted into the incision in the eye. The suction line is coupled to a console that includes electronics, a control system, a vacuum source such as a peristaltic pump, and a fluid source. A vacuum source provides vacuum to the suction line. The vacuum within the aspiration line causes material to flow from the eye and through the aspiration line. To maintain intraocular pressure, another cannula connected to the irrigation line or infusion line is inserted into another incision in the eye. The priming line ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/00G01L9/00
CPCA61M2205/12A61M2205/3306A61M2205/3331A61M2210/0612G01L9/0077A61M1/73A61F9/008A61B34/25A61F2009/00844A61B2562/0247
Inventor J·艾克沃P·J·埃塞克斯K·托德
Owner NOVARTIS AG
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