Interspinous spacer
First Claim
1. An instrument for deploying a spacer, the instrument comprising:
- a handle assembly;
a spacer holder assembly connected to the handle assembly and configured to clamp onto a body of the spacer; and
a driver configured to extend through at least a portion of the handle assembly and the spacer holder assembly, the driver is operable to drive an actuator of the spacer within a passageway of the spacer to move holders of the spacer away from one another while the spacer holder assembly holds the body, wherein the spacer holder assembly is configured to release the body of the spacer while the holders surround and contact respective bony protrusions of adjacent vertebrae of a subject.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable spacer for placement between adjacent spinous processes in a spinal motion segment is provided. The spacer includes a body defining a longitudinal passageway. A first arm and a second arm are connected to the body. Each arm has a pair of extensions and a saddle defining a U-shaped configuration for seating a spinous process therein. An actuator assembly is disposed inside the longitudinal passageway and connected to the body. When advanced, the actuator assembly contacts ramming surfaces of the arms to rotate them from an undeployed configuration to a deployed configuration. In the deployed configuration, the distracted adjacent spinous processes are seated in the U-shaped portion of the arms providing sufficient distraction to open the neural foramen. An insertion instrument is provided for implanting the interspinous process spacer. The system is configured for implantation through a small percutaneous incision employing minimally invasive techniques.
618 Citations
20 Claims
-
1. An instrument for deploying a spacer, the instrument comprising:
-
a handle assembly; a spacer holder assembly connected to the handle assembly and configured to clamp onto a body of the spacer; and a driver configured to extend through at least a portion of the handle assembly and the spacer holder assembly, the driver is operable to drive an actuator of the spacer within a passageway of the spacer to move holders of the spacer away from one another while the spacer holder assembly holds the body, wherein the spacer holder assembly is configured to release the body of the spacer while the holders surround and contact respective bony protrusions of adjacent vertebrae of a subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 17)
-
-
10. An instrument for deploying a spacer, the instrument comprising:
-
a handle assembly; a spacer holder assembly connected to the handle assembly and configured to hold a body of the spacer while the spacer is delivered between adjacent vertebrae; and a driver insertable through the handle assembly and the spacer holder assembly to move the driver into engagement with the spacer, the driver is rotatable relative to the spacer holder assembly to linearly drive an actuator of the spacer within a passageway of the spacer to drive spinous process holders of the spacer away from one another while the spacer holder assembly holds the body, wherein the spacer holder assembly is reconfigurable to release the body of the spacer while the spinous process holders contact respective bony protrusions of adjacent vertebrae. - View Dependent Claims (11, 12, 13, 14, 15, 16, 18, 19, 20)
-
Specification