Interspinous spacer
First Claim
1. An insertion instrument configured for delivering a spacer to an interspinous process space of a patient and deploying the spacer from an undeployed configuration to at least one deployed configuration to relieve pain;
- the spacer including a body, at least one arm connected to and movable with respect to the body and a spacer actuator having a proximal end and a distal end disposed at least partially inside the body that is configured to move the at least one arm from an undeployed configuration to at least one deployed configuration;
the insertion instrument comprising;
a handle assembly;
a first assembly connected to the handle assembly, the first assembly being configured to connect to the body of the spacer at the distal end of the insertion instrument, the first assembly having a first control at the handle assembly configured to connect and release the body of the spacer and the first assembly;
a second assembly connected to the handle assembly, the second assembly being configured to connect to the proximal end of the actuator of the spacer at the distal end of the insertion instrument, the second assembly having a second control at the handle assembly configured to connect and release the actuator and the second assembly; and
a third assembly connected to the handle assembly;
the third assembly being configured to move the second assembly relative to the body of the spacer for arranging the spacer from an undeployed configuration to at least one deployed configuration.
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 camming 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.
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Citations
15 Claims
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1. An insertion instrument configured for delivering a spacer to an interspinous process space of a patient and deploying the spacer from an undeployed configuration to at least one deployed configuration to relieve pain;
- the spacer including a body, at least one arm connected to and movable with respect to the body and a spacer actuator having a proximal end and a distal end disposed at least partially inside the body that is configured to move the at least one arm from an undeployed configuration to at least one deployed configuration;
the insertion instrument comprising;a handle assembly; a first assembly connected to the handle assembly, the first assembly being configured to connect to the body of the spacer at the distal end of the insertion instrument, the first assembly having a first control at the handle assembly configured to connect and release the body of the spacer and the first assembly; a second assembly connected to the handle assembly, the second assembly being configured to connect to the proximal end of the actuator of the spacer at the distal end of the insertion instrument, the second assembly having a second control at the handle assembly configured to connect and release the actuator and the second assembly; and a third assembly connected to the handle assembly;
the third assembly being configured to move the second assembly relative to the body of the spacer for arranging the spacer from an undeployed configuration to at least one deployed configuration. - View Dependent Claims (2, 3, 4)
- the spacer including a body, at least one arm connected to and movable with respect to the body and a spacer actuator having a proximal end and a distal end disposed at least partially inside the body that is configured to move the at least one arm from an undeployed configuration to at least one deployed configuration;
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5. An insertion instrument for moving a spacer from an undeployed configuration to at least one deployed configuration, the insertion instrument comprising:
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a handle assembly; a spacer holder assembly connected to the handle assembly and connectable to a body of the spacer, the spacer holder assembly having a control located along or proximate to the handle assembly, the control is operable to cause the spacer holder assembly to connect to and to release the body of the spacer; and a spacer deployment assembly configured to extend through the handle assembly and the spacer holder assembly, the spacer deployment assembly is operable to cause the spacer to move from the undeployed configuration to the at least one deployed configuration for contacting bony protrusions of adjacent vertebrae, and wherein the spacer deployment assembly is configured to drive an actuator of the spacer to move arms of the spacer away from each other. - View Dependent Claims (6, 7, 8, 9)
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10. An insertion instrument for moving a spacer from an undeployed configuration to at least one deployed configuration, the insertion instrument comprising;
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a handle assembly; spacer holder assembly connected to the handle assembly and connectable to a body of the spacer, the spacer holder assembly having a control located along or proximate to the handle assembly, the control is operable to cause the spacer holder assembly to connect to and to release the body of the spacer, wherein the spacer holder assembly includes; an outer shaft, and a clamp shaft located inside the outer shaft and having two prongs, wherein the outer shaft is movable relative to the clamp shaft such that distal movement of the outer shaft relative to the clamp shaft deflects the prongs inwardly for connecting with the body of the spacer and proximal movement of the outer shaft relative to the clamp shaft allows the prongs to move outwardly for releasing the body of the spacer; and a spacer deployment assembly configured to extend through the handle assembly and the spacer holder assembly, the spacer deployment assembly is operable to cause the spacer to move from the undeployed configuration to the at least one deployed configuration for contacting bony protrusions of adjacent vertebrae.
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11. An insertion instrument for moving a spacer from an undeployed configuration to at least one deployed configuration, the insertion instrument comprising:
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a handle assembly; a spacer holder assembly connected to the handle assembly and connectable to a body of the spacer, the spacer holder assembly having a control located along or proximate to the handle assembly, the control is operable to cause the spacer holder assembly to connect to and to release the body of the spacer, wherein the spacer holder assembly has a jaw with a gripping configuration for gripping the spacer and an open configuration for releasing the spacer, and wherein the control is operable to cause the jaw to move from the gripping configuration to the open configuration; and a spacer deployment assembly configured to extend through the handle assembly and the spacer holder assembly, the spacer deployment assembly is operable to cause the spacer to move from the undeployed configuration to the at least one deployed configuration for contacting bony protrusions of adjacent vertebrea.
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12. An insertion instrument for moving a spacer from an undeployed configuration to at least one deployed configuration, the insertion instrument comprising:
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a handle assembly; a spacer holder assembly connected to the handle assembly and connectable to a body of the spacer, the spacer holder assembly having a control located along or proximate to the handle assembly, the control is operable to cause the spacer holder assembly to connect to and to release the body of the spacer; and a spacer deployment assembly configured to extend through the handle assembly and the spacer holder assembly, the spacer deployment assembly is operable to cause the spacer to move from the undeployed configuration to the at least one deployed configuration for contacting bony protrusions of adjacent vertebrae, wherein the spacer holder assembly includes a first assembly and a second assembly, wherein the first assembly includes a first outer shaft, and a first clamp shaft located concentrically inside the first outer shaft, the first clamp shaft having two first prongs, wherein distal movement of the first outer shaft relative to the first clamp shaft cause the first prongs to move inwardly for connecting with the body of the spacer and proximal movement of the first outer shaft relative to the first clamp shaft uncovers the first prongs allowing the first prongs to splay outwardly to release the body of spacer, and the second assembly includes a second outer shaft, and a second clamp shaft connected to the second outer shaft and located concentrically inside the second outer shaft, the second clamp shaft having two second prongs, wherein distal movement of the second outer shaft relative to the second clamp shaft cause the second prongs to move inwardly for connecting with the spacer actuator and proximal movement of the second outer shaft relative to the second clamp shaft allows the second prongs to splay outwardly to release the spacer actuator. - View Dependent Claims (13, 14, 15)
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Specification