INSERTION ASSEMBLY FOR MINIMALLY INVASIVE SPINAL SURGERY
First Claim
1. A telescopic insertion assembly configured to insert a pedicle screw into a vertebral body, the insertion assembly comprising:
- an attachment fixture having one end configured to mate with the pedicle screw and another end having a ridged portion;
a center tube having one end slidably attached to the attachment fixture and another end having an internally ridged portion;
a telescoping member having one ridged end configured to slidably attach to the center tube and another end having a yoke, the telescoping member configured to extend the yoke to different distances from the center tube; and
an alignment member configured to hingeably attach to the yoke of the telescoping member, the alignment member configured to rotate from a first position to a second position;
wherein the second position of the alignment member is above a top surface of a patient'"'"'s skin.
1 Assignment
0 Petitions
Accused Products
Abstract
A telescopic insertion assembly is configured to insert a pedicle screw into a vertebral body. The insertion assembly includes an attachment fixture having one end configured to mate with the pedicle screw and another end having a ridged portion. A center tube is provided having one end slidably attached to the attachment fixture and another end having an internally ridged portion. A telescoping member has one ridged end configured to slidably attach to the center tube and another end having a yoke. The telescoping member is configured to extend the yoke to different distances from the center tube. An alignment member is configured to hingeably attach to the yoke of the telescoping member. The alignment member is configured to rotate from a first position to a second position. The second position of the alignment member is above a top surface of a patient'"'"'s skin.
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Citations
21 Claims
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1. A telescopic insertion assembly configured to insert a pedicle screw into a vertebral body, the insertion assembly comprising:
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an attachment fixture having one end configured to mate with the pedicle screw and another end having a ridged portion; a center tube having one end slidably attached to the attachment fixture and another end having an internally ridged portion; a telescoping member having one ridged end configured to slidably attach to the center tube and another end having a yoke, the telescoping member configured to extend the yoke to different distances from the center tube; and an alignment member configured to hingeably attach to the yoke of the telescoping member, the alignment member configured to rotate from a first position to a second position; wherein the second position of the alignment member is above a top surface of a patient'"'"'s skin. - View Dependent Claims (2, 3, 4)
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5. A telescopic insertion assembly configured to insert a pedicle screw into a vertebral body, the telescopic insertion assembly comprising:
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an attachment fixture having one end configured to mate with the pedicle screw and another end having a ridged portion; a center tube having one end slidably attached to the attachment fixture and another end having an internal portion; a telescoping member having one end slidably attached to the center tube and another end having a collar, the collar including a plurality of apertures, the telescoping member configured to extend the collar to different distances from the center tube; and an alignment tool having a plurality of prongs configured to engage the plurality of apertures in the collar; wherein the alignment tool maintains the collar of the telescoping member at a level above a top surface of a patient'"'"'s skin. - View Dependent Claims (6, 7, 8)
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9. A reducing retainer configured for retaining a longitudinal member in a head of a pedicle screw, the reducing retainer comprising:
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a retainer portion configured to attach to the head of the pedicle screw and retain the longitudinal member in the yoke; an extension section connected to the retainer portion, the extension section having a weakened area; and a head portion connected to the extension section, the head portion having a drive structure; wherein rotational movement applied to the drive structure is configured to seat the longitudinal member in the head of the pedicle screw, and wherein further rotational movement of the drive structure is configured to break the weakened area of the extension section; wherein the extension section and the head portion can be removed after the weakened area is broken. - View Dependent Claims (10, 11)
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12. An assembly configured for centralizing of a longitudinal member within a plurality of telescopic insertion assemblies, the assembly comprising:
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a rod holder having a handle and an extension member, the handle having an aperture, the extension member having an aperture, the aperture of the extension member configured for placement over an extension of the longitudinal member; a centralizer having a handle and an elongated member, the elongated member configured for insertion through the aperture in the handle of the rod holder, the elongated member further configured to substantially encircle the extension member; wherein the centralizer centralizes the longitudinal member among the plurality of telescopic insertion assemblies. - View Dependent Claims (13, 14)
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15. A center tube for use in a telescopic insertion assembly, the center tube comprising:
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a lower end configured for releasable attachment to a pedicle screw; a middle portion connected to the lower end; an upper end connected to the middle portion; a pivotable section pivotably attached to the middle portion and extending into the upper end, the pivotable section configured to pivot from a first closed position to a second open position; wherein in the second open position, a passage is formed between the pivotable section and the center tube, and wherein the passage is configured to provide access to position a longitudinal member within the telescopic insertion assembly. - View Dependent Claims (16, 17)
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18. An insertion device for penetrating vertebral bodies, the insertion comprising:
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a cannula having an inner passage; an obturator configured for substantial housing within the passage of the cannula; a depth stop attached to the cannula, the depth stop configured as a marker to indicate the insertion depth of the insertion device. - View Dependent Claims (19, 20, 21)
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Specification