Trocar assembly
AssigneeUroHealth, Inc. (California)
InventorsDavid A. Dunlap, Douglas J. Medema, Hugh Melling, Jeffrey W. Zerfas
Life of this patent
Estimating the term…
Abstract
A trocar for use in surgical procedures including a cannula for maintaining a sealed working channel in a body wall and an obturator which creates the working channel through the body wall while protecting patients and medical personnel from harm is disclosed. A cannula converter which can be employed with the trocar to enable a surgeon to use surgical instruments having a smaller outer diameter than the inner diameter of the cannula without deflating a body cavity is further disclosed. A site stabilizer which can be used with the trocar to prevent the cannula from being inadvertently withdrawn from the body cavity during a surgical procedure is also disclosed.
Claims7
A site stabilizer for preventing inadvertent withdrawal of a trocar cannula from a body wall comprising:
- a stem defining a channel for receiving the trocar cannula and having external threads for engaging the body wall;
- a head connected to the stem, the head having a top portion and a bottom portion, the top portion and bottom portion each defining an opening aligned with the channel of the stem for receiving the trocar cannula, the bottom portion including a camming structure;
- a handle slidably disposed at least partially within the head and operatively engaging the camming structure;
- and
- a gripping device disposed adjacent the handle, the gripping device translating between a release position for receiving and releasing the trocar cannula and a grip position for securing and gripping the trocar cannula as the handle moves along the camming structure.
Dependencies are inferred from the claim text.