Surgical Access Device with Adjustable Cannula
First Claim
Patent Images
1. A surgical trocar comprising:
- a) a cannula having a housing;
b) a cannula tube;
c) a collapsible segment disposed between the housing and the tube;
d) a spool located within the housing; and
b) a tension member in communication with the spool and the cannula tube wherein rotation of the spool causes the tension member to shorten thereby moving the cannula tube toward the cannula housing and collapsing the collapsible segment.
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0 Petitions
Accused Products
Abstract
A surgical access device is provided having a cannula and obturator. The cannula has a housing and tube section with an anchor located about the tube section. The obturator has a mechanism to deploy the anchor and adjust the cannula length. The anchor is moveable between a deployed and undeployed state where the undeployed state facilitates insertion and removal of the access device and the deployed state assists in fixation of the cannula in an anatomic structure. Anchor deployment is independent of cannula length adjustment.
36 Citations
20 Claims
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1. A surgical trocar comprising:
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a) a cannula having a housing; b) a cannula tube; c) a collapsible segment disposed between the housing and the tube; d) a spool located within the housing; and b) a tension member in communication with the spool and the cannula tube wherein rotation of the spool causes the tension member to shorten thereby moving the cannula tube toward the cannula housing and collapsing the collapsible segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical trocar comprising:
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a) a cannula having a housing; b) a rigid cannula tube; c) a flexible collapsible segment disposed between the housing and the tube, the collapsible segment rotatably attached to the housing; d) a spool located within the housing; e) a lock attached to the housing in disengageable communication with the spool; and b) a tension member in communication with the spool and the cannula tube wherein engagement of the lock and rotation of the housing causes rotation of the spool thereby causing the tension member to shorten thereby moving the cannula tube toward the cannula housing and collapsing the collapsible segment. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A surgical trocar comprising:
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a) a cannula having a housing; b) a cannula tube; c) a collapsible segment disposed between the housing and the tube; d) a spool located within the housing, the spool having a medial annulus;
an opening in the medial annulus defining a keyseat; ande) a tension member in communication with the spool and the cannula tube. - View Dependent Claims (17, 18, 19, 20)
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Specification