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US 2010/0160731 A1Published application
Ultrasound-visualizable endoscopic access system
OwnerMarc Giovannini, Darach McGrathinventors
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Abstract
An endoscopic access system is provided including an outer cannula and a penetrating stylet. The stylet provides an enhanced echogenic profile configured to provide for effective navigation under ultrasound visualization in a patient body. The cannula may include a rounded distal margin configured to provide for efficient passage though the cannula distal end of tools such as a wire guide.
Claims20
An ultrasound-visualizable endoscopic access system, comprising:
- a flexible outer cannula including a first cannula lumen extending from a distal end toward a proximal end of the cannula;
- and
- a stylet disposed removably through the first cannula lumen, the stylet including
- a piercing distal tip;
- a flexible body length extending proximally from the piercing distal tip;
- and
- an echogenic stylet portion disposed immediately adjacent the piercing distal tip, the echogenic stylet portion configured to provide reflection of ultrasonic waves sufficient for ultrasonic imaging of the echogenic stylet portion at a resolution providing for effective navigation the cannula in a body.
4 more elements
An endoscopic access cannula system comprising:
- an outer cannula having a proximal end, a distal end, and a cannula lumen extending proximally from the distal end, where the distal end includes a rounded margin between its outer surface and a surface of the cannula lumen;
- a stylet configured for passage through at least a portion of the cannula lumen, where the stylet comprises:
- a pointed distal end configured for penetrating tissue to form a path for passage of the cannula;
- and
- a dimpled echogenic surface region immediately adjacent the pointed distal end.
2 more elements
Dependencies are inferred from the claim text.