EUS-FNA Stylet Withdrawal into Handle
First Claim
1. A medical instrument, comprising:
- a body having a proximal end and a distal end and defining a lumen extending axially therethrough from the proximal end to the distal end;
a stylet removably received within the lumen; and
a handle coupled to the proximal end of the body, the handle comprising an open chamber therewithin sixed and shaped to receive the stylet in a coiled configuration so that an axial length of the chamber is less than a length of the stylet when the stylet is received within the body.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device comprises a needle configured for insertion into a body and defining a needle lumen extending therethrough from a proximal end opening to a distal end opening and a handle connected to a proximal end of the needle and including a stylet receiving lumen therein, the stylet receiving lumen being open to a proximal end of the needle lumen. The medical device also comprises a stylet movable between a retracted configuration in which a distal end of the stylet is received within the stylet receiving chamber and an extended configuration in which the distal end of the stylet is received within the distal opening of the needle lumen sealing the distal opening, wherein, when withdrawn proximally into the stylet receiving lumen, the stylet is coiled within the chamber.
18 Citations
18 Claims
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1. A medical instrument, comprising:
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a body having a proximal end and a distal end and defining a lumen extending axially therethrough from the proximal end to the distal end; a stylet removably received within the lumen; and a handle coupled to the proximal end of the body, the handle comprising an open chamber therewithin sixed and shaped to receive the stylet in a coiled configuration so that an axial length of the chamber is less than a length of the stylet when the stylet is received within the body. - View Dependent Claims (2, 3, 4, 5)
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6. A medical device, comprising:
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a needle configured for insertion into a body and defining a needle lumen extending therethrough from a proximal end opening to a distal end opening; a handle connected to a proximal end of the needle and including a stylet receiving chamber therein, the stylet receiving chamber being open to a proximal end of the needle lumen; and a stylet movably received within the device between a retracted configuration in which a distal end of the stylet is received within the stylet receiving chamber and an extended configuration in which the distal end of the stylet is received within the distal opening of the needle lumen sealing the distal opening, wherein, when withdrawn proximally into the stylet receiving lumen, the stylet is coiled within the chamber. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for gathering tissue samples in a body, comprising:
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providing a tissue sampling needle having a lumen extending from a proximal end of the needle to a distal end of the needle; positioning a stylet in an extended configuration in which a distal end of the stylet is received in and occludes a distal opening of the needle lumen; advancing the needle and stylus simultaneously to a target position within a body; withdrawing the stylet proximally to a retracted configuration in which at least a portion of the stylet is withdrawn proximally from the needle lumen into a stylet receiving lumen formed in a handle of the device until a distal end of the stylet is located proximally of an aspiration lumen formed in the handle of the device and open to the needle lumen; and drawing target tissue into the aspiration lumen. - View Dependent Claims (15, 16, 17, 18)
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Specification