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US 8,137,316 B2Granted
Sheathless insertion stylet system for catheter placement
AssigneeTyco Healthcare Group LP
InventorsBrett Haarala, Richard Braga
Life of this patent
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Abstract
A stylet instrument is positionable within a catheter to facilitate placement of the catheter during a surgical procedure. The stylet instrument has application in a hemodialysis procedure where the catheter is positioned via a subcutaneous tunneling technique. The stylet instrument includes a hub, first and second stylet members extending from the hub and operatively connected to permit positioning within corresponding lumens of a catheter, and securing means associated with the hub to releasably secure the catheter to the hub. The securing means includes at least one locking detent.
Claims19
A stylet instrument for facilitating the insertion of a catheter tube through a subcutaneous tunnel, the stylet instrument comprising:
- a stylet hub having a first end portion adapted for releasable connection to an external device and a second end portion adapted for releasable connection to a catheter tube, the second end portion comprising a catheter connector adapted to engage the catheter tube, the catheter connector including a first segment and a second segment dimensioned for reception within respective lumens of the catheter tube and at least one locking detent configured to releasably engage an internal surface of the catheter tube, and the stylet hub defining an internal chamber;
- first and second stylet members secured to and extending from the stylet hub such that the stylet members can be inserted into the catheter tube while connected to the stylet hub, each of the first and second stylet members being longer than the stylet hub and dimensioned for reception within corresponding lumens of the catheter tube and to extend from a proximal end of the catheter tube to a position adjacent a distal end of the catheter tube, the first stylet member defining a first lumen extending along at least a portion of a first length thereof and the second stylet member defining a second lumen extending along at least a portion of a second length thereof.
A stylet instrument for facilitating the insertion of a catheter tube through a subcutaneous tunnel, the stylet instrument comprising:
- a stylet hub having a first end portion adapted for releasable connection to an external device and a second end portion adapted for releasable connection to a catheter tube, the second end portion comprising a catheter connector adapted to engage the catheter tube, the catheter connector including a first segment and a second segment dimensioned for reception within respective lumens of the catheter tube, wherein at least one of the first and second segments of the catheter connector has a tapered configuration for facilitating insertion into the lumens of the catheter tube, and the stylet hub defining an internal chamber;
- first and second stylet members secured to and extending from the stylet hub such that the stylet members can be inserted into the catheter tube while connected to the stylet hub, each of the first and second stylet members being longer than the stylet hub and dimensioned for reception within corresponding lumens of the catheter tube and to extend from a proximal end of the catheter tube to a position adjacent a distal end of the catheter tube, the first stylet member defining a first lumen extending along at least a portion of a first length thereof and the second stylet member defining a second lumen extending along at least a portion of a second length thereof.
A stylet instrument comprising:
- a stylet hub having a first end portion and a second end portion, the first end portion including an integrally formed luer connector configured for releasable securement with an external device, and the second end portion including an integrally formed catheter connector configured for releasable securement with a catheter tube, the catheter connector including at least one locking decent configured to releasably engage an internal surface of the catheter tube;
- and
- first and second stylet members operably connected to, and extending from, the stylet hub, the first and second stylet members being longer than the stylet hub and dimensioned for reception within the catheter tube and to extend from a proximal end of the catheter tube to a position adjacent a distal end of the catheter tube such that the stylet members can be inserted into the catheter tube while connected to the stylet hub.
A stylet instrument comprising:
- a stylet hub having a first end portion and a second end portion, the first end portion including an integrally formed luer connector configured for releasable securement with an external device, and the second end portion including an integrally formed catheter connector configured for releasable securement with a catheter tube, the catheter connector including a first segment and a second segment dimensioned for reception within respective lumen of the catheter tube, wherein at least one of the first and second segments of the catheter connector has a tapered configuration for facilitating insertion into the lumens of the catheter tube;
- and
- first and second stylet members operably connected to, and extending from, the stylet hub, the first and second stylet members being longer than the stylet hub and dimensioned for reception within the catheter tube and to extend from a proximal end of the catheter tube to a position adjacent a distal end of the catheter tube such that the stylet members can be inserted into the catheter tube while connected to the stylet hub.
Dependencies are inferred from the claim text.