Aspiration control via flow or impedance

a flow or impedance technology, applied in the direction of suction pumps, intravenous devices, other medical devices, etc., can solve the problems of lack of occlusion detection, difficulty in operating vacuum controlled systems in flow controlled mode, and varying amounts of effort required to effectively and safely remove tissue and fluid
US20070005030A1Inactive Publication Date: 2007-01-04ALCON INC
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
ALCON INC
Publication Date
2007-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A microsurgical system capable of controlling aspiration and detecting an occlusion via monitoring a change in either suction flow rate or suction impedance.
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Description

FIELD OF THE INVENTION

[0001] The present invention generally pertains to controlling aspiration in microsurgical systems and more particularly to controlling aspiration in ophthalmic microsurgical systems. DESCRIPTION OF THE RELATED ART

[0002] During small incision surgery, and particularly during ophthalmic surgery, small probes are inserted into the operative site to cut, remove, or otherwise manipulate tissue. During these surgical procedures, fluid is typically infused into the eye, and the infusion fluid and tissue are aspirated from the surgical site. Varying surgical conditions and surgical objectives can lead to varying amounts of effort required to effectively and safely remove the tissue and fluid.

[0003] The types of aspiration systems used, prior to the present invention, were generally characterized as either flow controlled or vacuum controlled, depending upon the type of pump used in the system. Each type of system has certain advantages.

[0004] Vacuum controlled asp...

Claims

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