Spinal Fixation System
First Claim
1. A spinal fixation system, comprising:
- a body having a proximal end and a distal end, wherein the body comprises;
a saddle at the distal end of the body;
at least two tabs connected to and extending proximally from the saddle;
a receiving channel disposed between the at least two tabs and extending into the saddle; and
a securing mechanism;
a tower having a proximal end and a distal end, wherein the tower comprises;
a central shaft having a proximal end and a distal end, wherein the central shaft is configured to be received into at least a portion of the receiving channel of the body;
a cannula disposed along a longitudinal axis of the central shaft, wherein the longitudinal axis extends from the proximal end to the distal end of the central shaft;
at least two panels disposed at the distal end of the central shaft and extending distally from the central shaft;
an enlarged section disposed at the proximal end of the central shaft; and
an attachment feature disposed at the proximal end of the central shaft, wherein the attachment feature is configured to slide proximally and distally between the at least two panels and the enlarged section;
a retention device, wherein the retention device comprises;
a receiver having a proximal end and a distal end;
wherein the receiver comprises a passageway extending from the proximal end to the distal end of the receiver,wherein the receiver comprises a securing device engaging feature disposed at the distal end of the receiver, andwherein the receiver is sized to be received into the cannula of the tower;
an insert having a proximal end and a distal end,wherein the insert is sized to be received into the passageway of the receiver;
wherein the distal end of the insert is configured to engage the securing device engaging feature;
a securing device having a proximal end and a distal end, wherein the securing device comprises;
a securing feature at the proximal end of the securing device, wherein the securing feature is configured to engage with the securing device engaging feature of the retention device.
1 Assignment
0 Petitions
Accused Products
Abstract
A spinal fixation system may comprise a body, a tower, a set screw holder, and a set screw. A body may comprise a saddle, at least two tabs connected to and extending proximally from the saddle, a receiving channel disposed between the at least two tabs, and a securing mechanism, such as internal threads. A tower may comprise a central shaft configured to be received into the receiving channel, a cannula, at least two panels, an enlarged section, and an attachment feature configured to slide proximally and distally between the at least two panels and the enlarged section. A set screw holder may comprise a receiver and an insert. A receiver may comprise a passageway and a set screw engaging feature. The insert may be is sized to be received into the passageway of the receiver and may be configured to engage the set screw engaging feature.
20 Citations
39 Claims
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1. A spinal fixation system, comprising:
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a body having a proximal end and a distal end, wherein the body comprises; a saddle at the distal end of the body; at least two tabs connected to and extending proximally from the saddle; a receiving channel disposed between the at least two tabs and extending into the saddle; and a securing mechanism; a tower having a proximal end and a distal end, wherein the tower comprises; a central shaft having a proximal end and a distal end, wherein the central shaft is configured to be received into at least a portion of the receiving channel of the body; a cannula disposed along a longitudinal axis of the central shaft, wherein the longitudinal axis extends from the proximal end to the distal end of the central shaft; at least two panels disposed at the distal end of the central shaft and extending distally from the central shaft; an enlarged section disposed at the proximal end of the central shaft; and an attachment feature disposed at the proximal end of the central shaft, wherein the attachment feature is configured to slide proximally and distally between the at least two panels and the enlarged section; a retention device, wherein the retention device comprises; a receiver having a proximal end and a distal end; wherein the receiver comprises a passageway extending from the proximal end to the distal end of the receiver, wherein the receiver comprises a securing device engaging feature disposed at the distal end of the receiver, and wherein the receiver is sized to be received into the cannula of the tower; an insert having a proximal end and a distal end, wherein the insert is sized to be received into the passageway of the receiver; wherein the distal end of the insert is configured to engage the securing device engaging feature; a securing device having a proximal end and a distal end, wherein the securing device comprises; a securing feature at the proximal end of the securing device, wherein the securing feature is configured to engage with the securing device engaging feature of the retention device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A spinal fixation system, comprising:
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a tower having a proximal end and a distal end, wherein the tower comprises; a central shaft having a proximal end and a distal end, a cannula disposed along a longitudinal axis of the central shaft, wherein the longitudinal axis extends from the proximal end to the distal end of the central shaft; at least two panels disposed at the distal end of the central shaft and extending distally from the central shaft; an enlarged section disposed at the proximal end of the central shaft; and an attachment feature disposed at the proximal end of the central shaft, wherein the attachment feature is configured to slide proximally and distally between the at least two panels and the enlarged section; and a retention device, wherein the retention device comprises; a receiver having a proximal end and a distal end; wherein the receiver comprises a passageway extending from the proximal end to the distal end of the receiver, wherein the receiver comprises a securing device engaging feature disposed at the distal end of the receiver, and wherein the receiver is sized to be received into the cannula of the tower; an insert having a proximal end and a distal end, wherein the insert is sized to be received into the passageway of the receiver; wherein the distal end of the insert is configured to engage the securing device engaging feature. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of assembling a spinal fixation system, the method comprising:
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disposing a set screw holder within a tower, wherein the set screw holder comprises; a receiver having a proximal end and a distal end; wherein the receiver comprises a passageway extending from the proximal end to the distal end of the receiver, and wherein the receiver comprises a set screw engaging feature disposed at the distal end of the receiver, and an insert having a proximal end and a distal end, wherein the insert is disposed in the passageway of the receiver, and wherein the distal end of the insert is configured to engage the set screw engaging feature; wherein the tower comprises; a central shaft having a proximal end and a distal end; a cannula disposed along a longitudinal axis of the central shaft, wherein the longitudinal axis extends from the proximal end to the distal end of the central shaft; at least two panels disposed at the distal end of the central shaft and extending distally from the central shaft; an enlarged section disposed at the proximal end of the central shaft; and an attachment feature disposed at the proximal end of the central shaft, wherein the attachment feature is configured to slide proximally and distally between the at least two panels and the enlarged section; wherein the set screw holder is received within the cannula of the tower; securing a set screw to the set screw engaging feature of the set screw holder, wherein the set screw comprises, external threads, and a securing feature at a proximal end of the set screw, wherein the securing feature is configured to engage with the set screw engaging feature of the set screw holder; providing a body having a proximal end and a distal end, wherein the body comprises; a saddle at the distal end of the body; at least two tabs connected to and extending proximally from the saddle; a receiving channel disposed between the at least two tabs and extending into the saddle; and a securing mechanism; inserting an initial combined arrangement of the set screw holder, the tower, and the set screw through the receiving channel of the body; and securing the initial combined arrangement against the securing mechanism of the body. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification