Cannula for receiving surgical instruments
AssigneeEndius Incorporated
InventorsThomas W. Davison, Timothy E. Taylor, Adam Sher
Life of this patent
Estimating the term…
Abstract
A cannula (10) receives surgical instruments (120) for performing a surgical procedure on a body (130). The cannula (10) comprises a tube structure (12) defining a passage (16) through which the surgical instruments (120) are inserted into the body (130). The tube structure (12) has a proximal end (20) and a distal end (62). The tube structure (12) includes an expandable portion (40) for enabling an increase in the cross-sectional area of the passage (16) at the distal end (62). The expandable portion (40) of the tube structure (12), when expanded, has a conical configuration.
Claims30
A device for providing access to a surgical location within a patient, said device comprising:
- an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the proximal end can be positioned outside the patient and the distal end can be positioned inside the patient adjacent the surgical location;
- and
- a passage extending through the elongate body between the proximal and distal ends sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage;
- wherein the elongate body is actuatable between a first configuration sized for insertion into the patient and a second configuration wherein the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location, and wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the first and second locations.
A device for providing access to a spinal location within a patient, said device comprising:
- an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the proximal end can be positioned outside the patient and the distal end can be positioned inside the patient adjacent the surgical location;
- and
- a passage extending through the elongate body between the proximal and distal ends sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage;
- wherein the elongate body is expandable such that the cross-sectional area of said passage at a first location is greater than the cross-sectional area of said passage at a second location, wherein the first location is distal to the second location, and wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the first and second locations.
A device for providing access to a surgical location within a patient, said device comprising:
- an elongate body having a proximal end and a distal end and defining a length between the proximal and distal ends such that the proximal end can be positioned outside the patient and the distal end can be positioned inside the patient adjacent the surgical location;
- and
- a passage extending through the elongate body between the proximal and distal ends sized such that more than one surgical instrument can be positioned simultaneously within the passage along the entire length of the passage, the passage extending across a major axis and a minor axis, the major axis being the largest distance across said passage;
- wherein the elongate body is actuatable between a first configuration sized for insertion into the patient and a second configuration wherein the major axis of said passage at a first location is greater than the major axis of said passage at a second location, wherein the first location is distal to the second location, and wherein the elongate body comprises rigid material extending around substantially the entire perimeter of the cross-sectional area between the first and second locations.
Dependencies are inferred from the claim text.