摘要:
The present application relates to a system for removing material from within an eye, the system comprising: a probe having a distal tip insertable into the eye and having an aspiration port; a console coupled with the port along an aspiration pathway, wherein the console comprises a processor and a pump system, and wherein the pump system comprises a first pump (48; 57) and a second pump (48; 57) adapted to provide a first pump aspiration level and a second aspiration level. The system is characterized in that the second pump is capable of a higher pump rate than the first pump, wherein the second aspiration level is higher than the first aspiration level; and in that the processor is configured to cycle between the aspiration levels sufficiently for transient-induced effects of the aspiration level to help break-up the material for aspiration through the port.
摘要:
Devices, systems, and methods for treatment of an eye alter aspiration flow from the eye in response to an occlusion of the aspiration conduit pathway. Where aspiration is drawn from the eye using a volumetric pump, the pump can be reversed so as to induce fluid reflux from the aspiration conduit pathway into the eye to help clear the occlusion. The pump may vary the reverse flow in response to sensed aspiration pressure or the like, and the reverse flow may be halted before the pressure within the aspiration conduit pathway adjacent the eye significantly exceeds the irrigation fluid pressure and/or the pressure within the eye. Reflux may alternatively be generated by modulating a vent valve disposed between an irrigation conduit pathway and the aspiration conduit pathway.
摘要:
The present application relates to a phacoemulsification system comprising a probe having a distal tip insertable into an eye, the tip energizable with ultrasonic energy and having an aspiration port; and a console coupled with the port along an aspiration pathway, wherein the console comprises a processor and a pump system, and wherein the pump system comprises a first pump (48; 57) and a second pump (48; 57) adapted to provide a first pump rate and a second pump rate. The system is characterized in that the second pump is capable of a higher pump rate than the first pump, wherein the second pump rate is higher than the first pump rate; and in that, according to a first aspect, the processor is configured to, during pumping of aspiration flow along the aspiration pathway, transmit time coordinated command signals to energize the tip with the ultrasonic energy and switch between the pumping rates, or in that, according to a second aspect, the processor is configured to, during pumping of aspiration flow along the aspiration pathway at the first pump rate and in response to insufficient occlusion of the aspiration pathway, generate a command signal so as to induce pumping of the aspiration flow along the aspiration pathway at the second pump rate.
摘要:
The present application relates to a system for removing material from within an eye, the system comprising: a probe having a distal tip insertable into the eye and having an aspiration port; a console coupled with the port along an aspiration pathway, wherein the console comprises a processor and a pump system, and wherein the pump system comprises a first pump (48; 57) and a second pump (48; 57) adapted to provide a first pump aspiration level and a second aspiration level. The system is characterized in that the second pump is capable of a higher pump rate than the first pump, wherein the second aspiration level is higher than the first aspiration level; and in that the processor is configured to cycle between the aspiration levels sufficiently for transient-induced effects of the aspiration level to help break-up the material for aspiration through the port.
摘要:
There is disclosed herein a system for removing material from within an eye, the system comprising: a probe having a distal tip insertable into the eye, wherein the tip comprises an aspiration port; a console coupled with the port along an aspiration pathway, wherein the console comprises a processor and a pump system for providing a first pump rate and a second pump rate higher than the first pump rate, and wherein the processor is configured to automatically switch from the first pump rate to the second pump rate and control aspiration of the probe by tracking a vacuum level up to a threshold, and control aspiration through the probe by tracking a flow rate through the probe when the threshold has been passed.