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US 5,843,023 AGranted
Aspiration needle with side port
OwnerMichael Cecchiinventor
Life of this patent
Estimating the term…
Abstract
A single-lumen oocyte collection device, having a cannula which extends axially outward from a proximal end of a hub. The cannula has a side port and an axial port, each linked to a resilient portion of tubing to allow selective occlusion of the lumen thereof. The side port, through the hub, has a fixed relation to a sharpened, bevelled tip of the cannula, allowing even rotation and accurate orientation of the beveled tip of the device to puncture a follicle on an ovary with minimal trauma prior to collecting an oocyte. An echogenic structure is formed at the tip of the cannula.
Claims20
A medical aspiration device, comprising:
- (a) a single lumen cannula having a hollow space, a distal sharpened beveled tip and a proximal portion;
- (b) an indicia at said proximal portion corresponding to an orientation of said sharpened beveled tip;
- (c) a connector at said proximal portion having a pair of ports, providing a flow path through said hollow space of said single lumen cannula, from said distal sharpened beveled tip, through said proximal portion and through each of said pair of ports;
- and
- (d) a resilient conduit, having a flow path in communication with one of said pair of ports, having a first portion defined by a first wall, said first portion being selectively occludable to restrict a flow therethrough by application of an externally applied force to said first wall, and a second portion defined by a second wall, said second portion resisting occlusion by an externally applied force to said second wall, said second portion of said resilient conduit maintaining patency when subject to a force which occludes said first portion.
2 more elements
A method for aspirating a biological sample comprising the steps of:
- (a) providing a single lumen cannula having a hollow space, a distal sharpened beveled tip and a proximal portion;
- an indicia at the proximal portion corresponding to an orientation of the sharpened beveled tip;
- a connector at the proximal portion having a pair of ports, providing a flow path through the hollow space of the single lumen cannula, from the distal sharpened beveled tip, through the proximal portion and through each of the pair of ports;
- and a resilient conduit, having a flow path in communication with one of the pair of ports, having a first portion defined by a first wall, the first portion being selectively occludable to restrict a flow there through by application of an externally applied force to the first wall, and a second portion defined by a second wall, the second portion resisting occlusion by an externally allied force to the second wall, the second portion of the resilient conduit maintaining patency when subject to a force which occludes the first portion;
- (b) placing the sharpened beveled tip proximate to a location of the biological sample and inserting the sharpened beveled tip in the biological sample;
- (c) drawing a vacuum at one of the ports;
- (d) applying a force to the first wall of the resilient conduit sufficient to restrict a flow through the resilient conduit;
- and
- (e) injecting media through the other of the ports into the hollow space of the single lumen cannula.
6 more elements
A medical aspiration device, comprising:
- (a) a cannula having a wall, a hollow space, a distal sharpened beveled tip, a proximal portion having an axial aperture and a lateral aperture;
- (b) an axial port, in fluid communication with said hollow space through said axial aperture;
- (c) a lateral port, in fluid communication with said hollow space, in fluid communication with said hollow space through said lateral aperture, sad lateral aperture being formed as a groove in said wall of said cannula inclined with respect to said distal sharpened beveled tip;
- (d) an axial conduit, having a flow path in communication with said axial port, having a wall;
- and
- (e) a lateral conduit, having a flow path in communication with said lateral port, having a wall,
- said axial conduit and lateral conduit each being selectively occludable by an externally applied force.
4 more elements
Dependencies are inferred from the claim text.