Tissue removal devices, systems and methods
First Claim
Patent Images
1. A tissue removal device, comprising:
- a housing;
a rigid aspiration cannula extending from the housing to a distal tip outside the housing;
a valve disposed in the housing and configured for communicating with a vacuum source, the valve comprising a valve port communicating with the aspiration cannula in a fluid-sealed manner, wherein an inside diameter of the valve port is equal to or greater than an inside diameter of the distal tip; and
a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein;
at the open position, the valve port is open wherein the valve defines an aspiration path through the aspiration cannula and the valve;
at the closed position, the valve port is closed wherein the valve prevents vacuum from being applied at the distal tip;
the valve comprises an inner cannula and an outer cannula coaxially disposed about at least a portion of the inner cannula;
the inner cannula is configured for communicating with the vacuum source and is linearly movable by the actuator between the open position and the closed position;
the valve port is formed in the outer cannula;
at the open position the aspiration path passes through the outer cannula via the valve port and into the inner cannula; and
at the closed position the inner cannula blocks the valve port.
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Abstract
A tissue removal device includes a rigid aspiration cannula, a valve communicating with the aspiration cannula in a fluid-sealed manner, and a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein at the open position the valve defines an aspiration path through the aspiration cannula and the valve, and at the closed position the valve prevents vacuum from being applied at the distal tip.
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Citations
34 Claims
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1. A tissue removal device, comprising:
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a housing; a rigid aspiration cannula extending from the housing to a distal tip outside the housing; a valve disposed in the housing and configured for communicating with a vacuum source, the valve comprising a valve port communicating with the aspiration cannula in a fluid-sealed manner, wherein an inside diameter of the valve port is equal to or greater than an inside diameter of the distal tip; and a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein; at the open position, the valve port is open wherein the valve defines an aspiration path through the aspiration cannula and the valve; at the closed position, the valve port is closed wherein the valve prevents vacuum from being applied at the distal tip; the valve comprises an inner cannula and an outer cannula coaxially disposed about at least a portion of the inner cannula; the inner cannula is configured for communicating with the vacuum source and is linearly movable by the actuator between the open position and the closed position; the valve port is formed in the outer cannula; at the open position the aspiration path passes through the outer cannula via the valve port and into the inner cannula; and at the closed position the inner cannula blocks the valve port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A tissue removal system, comprising:
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a tissue removal device comprising; a housing; a rigid aspiration cannula extending from the housing to a distal tip outside the housing; a valve disposed in the housing and configured for communicating with a vacuum source, the valve comprising a valve port communicating with the aspiration cannula in a fluid-sealed manner, wherein an inside diameter of the valve port is equal to or greater than an inside diameter of the distal tip; and a pneumatically-driven actuator configured for moving the valve between an open position and a closed position, wherein; at the open position, the valve port is open wherein the valve defines an aspiration path through the aspiration cannula and the valve; and at the closed position, the valve port is closed wherein the valve prevents vacuum from being applied at the distal tip; an aspiration line communicating with the valve and passing through the housing of the tissue removal device; and a cassette comprising a cassette interior, an aspiration inlet communicating with the aspiration line and the cassette interior, and a vacuum outlet communicating with the cassette interior and configured for communication with the vacuum source, wherein the cassette is configured for being operated in an installed position at which the cassette is removably inserted into a console, and at the installed position the vacuum outlet communicates with the vacuum source, wherein the aspiration path runs from the inner cannula, through the aspiration line and into the cassette interior. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification