System and method for spinal implant placement
First Claim
1. A system for providing access to a spine of a patient, the system comprising:
- a first cannula comprising;
a first blade; and
a second blade discrete from the first blade;
wherein the first and second blades are positionable substantially parallel to each other to provide the first cannula such that the first cannula has a distal end insertable into the patient to provide access to the spine, the distal end having a docking element discrete from and securable to a connecting element implantable in a first vertebra of the spine.
8 Assignments
0 Petitions
Accused Products
Abstract
A posterior spinal fusion system may include a plurality of cannulas that mate with cages polyaxially coupled to pedicle screws. The cannulas maintain access to the pedicle screws to facilitate percutaneous insertion of a fusion rod into engagement with the cages. Each cannula has a pair of blades that may be held together by an abutment member that at least partially encircles the blades. Each abutment member abuts the skin to define a variable subcutaneous length of the corresponding cannula. Each abutment members is also lockably removable from the corresponding blades to enable the blades to pivot with respect to the connecting element to a position in which they can be withdrawn from the connecting element. The blades of each cannula are spaced apart to provide first and second slots of each cannula, through which the fusion rod can be percutaneously inserted.
-
Citations
56 Claims
-
1. A system for providing access to a spine of a patient, the system comprising:
-
a first cannula comprising;
a first blade; and
a second blade discrete from the first blade;
wherein the first and second blades are positionable substantially parallel to each other to provide the first cannula such that the first cannula has a distal end insertable into the patient to provide access to the spine, the distal end having a docking element discrete from and securable to a connecting element implantable in a first vertebra of the spine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a proximal end and a distal end insertable into the patient proximate the spine, the distal end comprising a docking element discrete from and securable to a connecting element implantable in a first vertebra of the spine;
wherein the docking element comprises a docked configuration in which the connecting element is secured to the distal end, and an undocked configuration in which the connecting element is removable from the distal end;
wherein the docking element is movable between the docked and undocked configurations independently of axial rotation of the cannula with respect to the connecting element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a distal end insertable into the patient proximate the spine, and a proximal end; and
an abutment member encircling at least a portion of the cannula to abut an outward facing surface of skin of the patient, wherein the abutment member is movable along the cannula to define a variable subcutaneous length of the cannula such that a combined length of the cannula and the abutment member does not change in response to motion of the abutment member along the cannula. - View Dependent Claims (22, 23, 24, 25, 26, 27)
-
-
28. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising;
a first component; and
a second component discrete from the first component;
wherein the first and second components are configured to be assembled together to provide the cannula such that the cannula has a distal end insertable into the patient to provide access to the spine;
wherein the components are further configured to be disassembled without removing the distal end from within the patient. - View Dependent Claims (29, 30, 31, 32, 33)
-
-
34. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a distal end insertable into the patient proximate the spine, and a proximal end, the distal end comprising a docking element securable to a connecting element implantable in a first vertebra of the spine; and
an abutment member encircling at least a portion of the cannula to abut an exterior skin surface of the patient, wherein the abutment member is movable along the cannula to define a variable subcutaneous length of the cannula. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
-
-
43. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a distal end insertable into the patient proximate the spine, and a proximal end, the cannula further comprising a first slot extending longitudinally between the distal and proximal ends; and
an abutment member encircling at least a portion of the cannula to abut an exterior skin surface of the patient, wherein the abutment member is movable along the cannula to define a variable subcutaneous length of the cannula. - View Dependent Claims (44, 45, 46, 47, 48, 49)
-
-
50. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a distal end insertable into the patient proximate the spine, and a proximal end, the distal end comprising a docking element securable to a connecting element implantable in a first vertebra of the spine; and
an abutment member encircling at least a portion of the cannula to abut an exterior skin surface of the patient;
wherein the docking element comprises a first frangible coupling configured to fracture in response to application of a threshold force against the first frangible coupling to permit removal of the distal end from the connecting element. - View Dependent Claims (51, 52, 53)
-
-
54. A system for providing access to a spine of a patient, the system comprising:
-
a cannula comprising a distal end, the distal end comprising a docking element securable to a connecting element implantable in a first vertebra of the spine; and
a protruding element protruding outward from an outer surface of the cannula such that, when the docking element is secured to the connecting element and the connecting element is implanted in the first vertebra, the protruding element is exposed. - View Dependent Claims (55, 56)
-
Specification