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US 8,617,106 B2Granted
Post-occlusion chamber collapse canceling system for a surgical apparatus and method of use
AssigneeAlcon Research, Ltd.
InventorJaime Zacharias
Life of this patent
Estimating the term…
Abstract
A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response comprising a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a simultaneous transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.
Claims115
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion, wherein said occlusion-break sensor (300) is located proximate a distal end of said aspiration path (23), said aspiration path (23) further comprising a collapsible chamber (290) in fluidic connection therewith;
- wherein:
- following said clearing of said occlusion, said collapsible chamber (290) rapidly expands, thereby increasing the rate of pressure drop, and thereby increasing the sensitivity and response time of said occlusion-break detector sensor (300);
- and
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse.
2 more elements
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, said aspiration path (23) comprising a collapsible chamber (290) in fluidic connection therewith, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion;
- a normally-open occlusion valve (270), temporarily closing in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, thereby occluding fluid flow through said aspiration path (23) and controllably stabilizing said occlusion break, thereby preventing said vacuum surge and consequent body chamber collapse;
- and
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- wherein following said clearing of said occlusion, said collapsible chamber (290) rapidly expands, thereby increasing the rate of pressure drop, and thereby increasing the sensitivity and response time of said occlusion-break detector sensor (300).
2 more elements
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- a normally-closed occlusion valve (270), temporarily opening for a defined interval before returning to a closed stated, and repeating said temporarily opening and closing at a controlled repetition rate, in response to control by an operator of said system, said normally-closed occlusion valve (270) comprising a valve bypass (299) to preserve some flow across said normally-closed occlusion valve (270) while said normally-closed occlusion valve (270) is in a closed state, to preserve tissue fragment grasping and cooling capability;
- wherein:
- by opening said aspiration path (23) in response to said control by the operator, flow through said aspiration path (23) is controlled by the operator thereby preventing said vacuum surge and consequent body chamber collapse.
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion;
- a normally-open occlusion valve (270), temporarily closing in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, thereby occluding fluid flow through said aspiration path (23) and controllably stabilizing said occlusion break, thereby preventing said vacuum surge and consequent body chamber collapse;
- said normally-open occlusion valve (270) comprising a valve bypass (299) to preserve some flow across said normally-open occlusion valve (270) while said normally-open occlusion valve (270) is in a closed state, to preserve tissue fragment grasping and cooling capability;
- and
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse.
2 more elements
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion;
- a normally-open occlusion valve (270), temporarily closing in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, thereby occluding fluid flow through said aspiration path (23) and controllably stabilizing said occlusion break, thereby preventing said vacuum surge and consequent body chamber collapse;
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- and
- a split of said aspiration path (23) into a primary aspiration path (762) and a secondary aspiration path (764);
- said primary aspiration path (762) comprising at least said normally-open occlusion valve (270, 772, 774) and venting via said normally-closed venting valve (57, 758) associated therewith;
- and said secondary aspiration path (764) comprising at least one secondary normally-closed valve (756,770) and connected to a secondary normally-open valve (759) associated therewith;
- wherein actuation of the valves of and associated with said primary aspiration path (762) is oppositely-synchronized in relation to actuation of the valves of and associated with said secondary aspiration path (764), thereby enabling said primary aspiration path (762) to aspirate while said secondary aspiration path (764) is vented and enabling said primary aspiration path (762) to vent while said secondary aspiration path (764) is aspirated.
5 more elements
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion;
- a normally-open occlusion valve (270), temporarily closing in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, thereby occluding fluid flow through said aspiration path (23) and controllably stabilizing said occlusion break, thereby preventing said vacuum surge and consequent body chamber collapse;
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- a second normally closed-venting valve (572) located proximate said distal end of said aspiration path (23), temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- and
- a physical connection between said second normally-closed venting valve (572) and said normally-open occlusion valve (270);
- wherein the opening of said second normally-closed venting valve (572) and the closing of said normally-open occlusion valve (270) occurs substantially simultaneously;
- and the closing of said second normally-closed venting valve (572) and the opening of said normally-open occlusion valve (270) occurs substantially simultaneously.
5 more elements
A surgical system for preventing collapse of a body chamber being operated upon, due to a vacuum surge following a clearing of an occlusion in an aspiration path (23) of said surgical system, comprising:
- an occlusion-break sensor (300) for sensing said clearing of said occlusion;
- a normally-open occlusion valve (270), temporarily closing in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, thereby occluding fluid flow through said aspiration path (23) and controllably stabilizing said occlusion break, thereby preventing said vacuum surge and consequent body chamber collapse;
- and
- a normally-closed venting valve (57) temporarily opening in response to said occlusion-break sensor (300) sensing said clearing of said occlusion, to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- an irrigation path (18);
- a bypass connection (960) between said irrigation path (18) and said aspiration path (23);
- said bypass connection (960) in turn comprising:
- said normally-closed venting valve (57), located proximate a distal end of said aspiration path (23);
- and a fluid reservoir (910) for accumulating fluid from said irrigation path (18) while said normally-closed venting valve (57) is closed;
- wherein:
- when said normally-closed venting valve (57) is temporarily opened, the accumulated fluid in said fluid reservoir (910) flows into said aspiration path (23), to reduce the vacuum thereby preventing said vacuum surge and consequent body chamber collapse;
- and
- a physical connection between said normally-closed venting valve (57) and said normally-open occlusion valve (270);
- wherein, as a consequence thereof:
- the opening of said normally-closed venting valve (57) and the closing of said normally-open occlusion valve (270) occurs substantially simultaneously;
- and the closing of said normally-closed venting valve (57) and the opening of said normally-open occlusion valve (270) occurs substantially simultaneously.
13 more elements
Dependencies are inferred from the claim text.