Source: https://patents.google.com/patent/US9622790
Timestamp: 2018-02-20 04:24:03
Document Index: 167701931

Matched Legal Cases: ['Application No. 60', 'Application No. 06787906', 'Application No. 200629900', 'Application No. 06787906', 'Application No. 2008', 'Application No. 06787906', 'Application No. 06787906', 'Application No. 2008']

US9622790B2 - Rod extension for extending fusion construct - Google Patents
US9622790B2
US9622790B2 US14500431 US201414500431A US9622790B2 US 9622790 B2 US9622790 B2 US 9622790B2 US 14500431 US14500431 US 14500431 US 201414500431 A US201414500431 A US 201414500431A US 9622790 B2 US9622790 B2 US 9622790B2
US14500431
US20150018884A1 (en )
In accordance with embodiments of the present invention, a rod extension for extending a fusion construct is provided. The rod extension allows a surgeon to connect a stabilization rod implant to at least a portion of a patient's spine, and also to connect the stabilization rod implant to an existing implant that has been previously installed in the patient. The existing fusion implant typically includes at least one existing pedicle screw, at least one existing rod, and at least one existing connector interconnecting the existing pedicle screw to the existing rod. The extension implant comprises a rod, an offset beam connected to the rod, and a clamp interconnected to the offset beam, wherein the clamp can be secured to the existing rod, thereby extending the fusion construct. A method of use is also provided.
The present application is a continuation application of U.S. patent application Ser. No. 13/236,200 filed on Sep. 19, 2011, which is a divisional application of U.S. patent application Ser. No. 11/458,629 filed on Jul. 19, 2006, now U.S. Pat. No. 8,021,399, which claims the benefit of U.S. Provisional Patent Application No. 60/700,887 filed on Jul. 19, 2005, the content of each is incorporated herein by reference in their entireties.
FIG. 1a is a side elevation view of an existing implant and of an embodiment of the present invention connected to the implant;
FIG. 1b is a side elevation view of the existing implant and embodiment of the present invention shown in FIG. 1b , shown here attached to a spine;
Referring now to FIG. 1a , rod extension 100 is shown in accordance with embodiments of the present invention. The rod extension 100 provides for a simple, rigid connection to an existing fusion rod. The rod extension 100 generally includes a rod portion 104, an offset beam 108, and a clamp 112. As shown in FIG. 1a , the rod extension 100 is connected to an existing fusion implant 116, wherein the existing fusion implant 116 comprises an existing rod 120, existing pedicle screws 124, and existing connectors 128 that interconnect the existing rod 120 to the existing pedicle screws 124.
Referring still to FIG. 1a , in accordance with embodiments of the present invention, the rod extension 100 is of sufficient length to allow the device to be anchored to the spine at the end comprising the rod portion 104, while at the other end extending sufficient distance to be connected to an existing implant 116. The end comprising the rod portion 104 may be anchored to the spine using hooks or other means to be attached to the spine. As shown in FIG. 1a , a pedicle screw 132 is shown interconnected to the rod 104 using a connector 136, wherein the pedicle screw 132 may be inserted into the pedicle of a vertebra for anchoring the end comprising the rod portion 104 to the spine. In accordance with embodiments of the present invention, the offset beam 108 comprises a means for stepping over or around the screw head of an existing pedicle screw 124 and existing connector 128, thereby allowing the rod portion 104 of the rod extension 100 to be substantially aligned with the existing rod 120. The offset beam 108, therefore, is of sufficient dimensions to allow the rod extension 100 to have access to the existing rod 120 via clamp 112, while also providing clearance from the screw head of an existing screw 124 and its associated existing connector 128. In accordance with embodiments of the present invention, the offset beam 108 may further comprise a telescoping means or other means for adjusting its longitudinal length and/or its offset or step dimension to accommodate different implant systems and/or to further accommodate actual conditions found within each patient.
FIG. 1a illustrates one possible orientation of existing rod 120, rod portion 104, offset beam 108, and clamp 112. In particular, existing rod 120 and offset beam 108 are shown to be parallel. Additionally, existing rod 120 and rod portion 104 are shown to be collinear. It should be understood, however, that other orientations are within the scope of the invention. For example, existing rod 120 and offset beam 108 may be oriented at an angle or existing rod 120 and rod portion 104 may not be collinear. Differing orientations may be needed to accommodate the unique dimensions of the various spinal structures of individual patients. In addition, the various elements of the rod extension may be oriented to accommodate the natural curvature of the spine. Furthermore, all of the drawings contained herein are for illustration purposes and should not be considered to scale.
Referring now to FIG. 1b , a rod extension 100, in accordance with embodiments of the present invention, is shown attached to a human spine. FIG. 1b shows vertebrae V1, V2, V3, and V4 separated by disks D. The existing spinal fusion implant 116 is shown anchored to vertebrae V2, V3, and V4. The spinal extension 100 is shown anchored to vertebra V1 and attached to the existing spinal fusion implant 116 by means of connector 112.
In accordance with embodiments of the present invention, the pedicle screws 124 and 132, and connectors 128 and 136 may allow for angular adjustment of the components. Furthermore, a variety of anchor devices, pedicle screws, connectors, and rods may be used with the present invention. U.S. Pat. No. 6,736,816 and U.S. Patent Publication Nos. US 2003-0093078; US 2003-0171751; US 2003-0191470; US 2004-0002708; and US 2004-0181223 are incorporated herein by reference in their entirety.
a fusion implant comprising a pedicle screw and a rod positioned in a receiver of the pedicle screw; and
a spinal fusion extension implant for interconnecting to the fusion implant, the spinal fusion extension implant comprising a rod having a first portion that is substantially parallel with the rod of the fusion implant, the rod of the spinal fusion extension comprising an offset beam extending from the first portion and a clamp extending from the offset beam that is coupled to the rod of the fusion implant, wherein the offset beam extends over the pedicle screw.
2. A system as recited in claim 1, wherein a rigid connection is formed between the rod of the fusion implant and the rod when the clamp is coupled to the rod of the fusion implant.
the pedicle screw comprises a shaft that defines a longitudinal axis, the receiver being coupled to the shaft; and
the offset beam intersects the longitudinal axis.
4. A system as recited in claim 1, wherein the offset beam steps around the receiver.
5. A system as recited in claim 1, wherein the spinal fusion extension implant comprises a screw hole with a screw disposed therein to fix the spinal fusion extension implant to the rod of the fusion implant.
6. A system as recited in claim 5, wherein the screw is movable between a first configuration in which the spinal fusion extension implant is movable relative to rod of the fusion implant and a second configuration in which the spinal fusion extension implant is fixed relative to the rod of the fusion implant.
7. A system as recited in claim 1, wherein the receiver is positioned between the first portion and the clamp.
8. A system as recited in claim 1, wherein the clamp is positioned opposite the first portion, with the offset beam connecting the clamp and the first portion.
9. A system as recited in claim 1, wherein:
the rod of the fusion implant has a circumference; and
the clamp extends around at least half of the circumference.
10. A system as recited in claim 9, wherein the clamp does not extend completely around the circumference.
11. A system as recited in claim 1, further comprising a second pedicle screw, the rod of the fusion implant being positioned in a receiver of the second pedicle screw, the clamp being positioned between the pedicle screw and the second pedicle screw.
12. A system as recited in claim 1, wherein the rod of the fusion implant extends completely through the receiver.
13. A system as recited in claim 1, further comprising a second pedicle screw, the first portion being positioned in a receiver of the second pedicle screw.
14. A system as recited in claim 13, wherein the first portion extends completely through the receiver of the second pedicle screw.
15. A system as recited in claim 1, wherein the clamp comprises a deformable body.
16. A system as recited in claim 1, wherein the first portion defines a longitudinal axis, and the offset beam comprises a second portion that extends parallel to the longitudinal axis, the first and second portions being connected by a transitional section that extends perpendicular to the longitudinal axis.
a fusion implant comprising a first pedicle screw and a rod positioned in the pedicle screw;
a second pedicle screw that is spaced apart from the first pedicle screw; and
a spinal fusion extension implant comprising a rod having a first portion that is positioned within the second pedicle screw, an offset beam extending from the first portion and a clamp extending from the offset beam that is coupled to the rod of the fusion implant, wherein the offset beam steps around the first pedicle screw.
18. A system as recited in claim 17, wherein the first portion and the offset beam each extend substantially parallel to the rod of the fusion implant.
a spinal fusion extension implant for interconnecting to the fusion implant, the spinal fusion extension implant comprising a rod having a first portion that is substantially parallel with the rod of the fusion implant, the rod of the spinal fusion extension comprising an offset beam extending from the first portion and a clamp extending from the offset beam that is coupled to the rod of the fusion implant, wherein the offset beam steps around the pedicle screw.
US14500431 2001-09-19 2014-09-29 Rod extension for extending fusion construct Active 2022-04-15 US9622790B2 (en)
US23620001 true 2001-09-19 2001-09-19
US70088705 true 2005-07-19 2005-07-19
US11458629 US8021399B2 (en) 2005-07-19 2006-07-19 Rod extension for extending fusion construct
US13236200 US8845694B2 (en) 2005-07-19 2011-09-19 Rod extension for extending fusion construct
US14500431 US9622790B2 (en) 2001-09-19 2014-09-29 Rod extension for extending fusion construct
US23620001 Continuation 2001-09-19 2001-09-19
US13236200 Continuation US8845694B2 (en) 2005-07-19 2011-09-19 Rod extension for extending fusion construct
US20150018884A1 true US20150018884A1 (en) 2015-01-15
US9622790B2 true US9622790B2 (en) 2017-04-18
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US11458629 Active 2028-06-14 US8021399B2 (en) 2005-07-19 2006-07-19 Rod extension for extending fusion construct
US13236200 Active US8845694B2 (en) 2005-07-19 2011-09-19 Rod extension for extending fusion construct
US14500431 Active 2022-04-15 US9622790B2 (en) 2001-09-19 2014-09-29 Rod extension for extending fusion construct
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EP (1) EP1906885B1 (en)
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