Gripping device for a pedicle screw
First Claim
1. A gripping device (1) enabling the introduction and attachment of a set screw (101) within a U-shaped link connector (102) of a polyaxial or monoaxial pedicle screw (103) to immobilize a connecting rod (104) of an osteosynthesis device (100), the gripping device comprising:
- a guide handle (7);
a guide body (4) opening, at a first end, to an outside to provide a passage of the connecting rod (104);
a threaded link between the guide handle (7) and a second end of the guide body (4);
a push tube (8) located and guided inside the guide body (4);
a sleeve (5) with flexible tabs (5a, 5b), the sleeve (5) being mounted around the guide body (4);
a lever (9) connected to the second end of the guide body (4), the lever (9) forming a pivot connection with the guide body (4),wherein, with the lever (9) engaged and with the guide body (4) resting against an upper edge of branches of the link connector (102), a force of pressure on the guide handle deforms the flexible tabs (5a, 5b) of said sleeve (5) around the link connector (102) to clip into blind holes (105) of the link connector (102) thereby fixing the gripping device (1) onto the link connector (102), and actuation of the guide handle (7), via the threaded link, pushes the push tube (8) inside the guide body (4) into contact with the connecting rod (104) providing alignment between principal axes of said gripping device (1) and those of the link connector (102) and ensuring that the connecting rod (104) is kept inside of said link connector,wherein release of the lever (9) moves the sleeve (5) to cause the flexible tabs (5a, 5b) to open for release (3) the gripping device (1) from the link connector (102) after establishing and screwing the set screw (101) inside the link connector (102).
1 Assignment
0 Petitions
Accused Products
Abstract
The gripping device (1) enables the introduction and attachment of a set screw (101) within a U-shaped link connector (102) of a polyaxial or monoaxial pedicle screw (103) to immobilize a connecting rod (104) of a osteosynthesis device (100), and includes a locking element (2) which is supported against the link connector (102) making it possible to ensure concentricity between the principal axes of the gripping device (1) and those of the link connector (102) and to ensure that the connecting rod (104) is kept on the inside of the link connector (102); and an element for releasing (3) the gripping device (1) after establishing and screwing the set screws (101) inside the link connector (102).
4 Citations
10 Claims
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1. A gripping device (1) enabling the introduction and attachment of a set screw (101) within a U-shaped link connector (102) of a polyaxial or monoaxial pedicle screw (103) to immobilize a connecting rod (104) of an osteosynthesis device (100), the gripping device comprising:
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a guide handle (7); a guide body (4) opening, at a first end, to an outside to provide a passage of the connecting rod (104); a threaded link between the guide handle (7) and a second end of the guide body (4); a push tube (8) located and guided inside the guide body (4); a sleeve (5) with flexible tabs (5a, 5b), the sleeve (5) being mounted around the guide body (4); a lever (9) connected to the second end of the guide body (4), the lever (9) forming a pivot connection with the guide body (4), wherein, with the lever (9) engaged and with the guide body (4) resting against an upper edge of branches of the link connector (102), a force of pressure on the guide handle deforms the flexible tabs (5a, 5b) of said sleeve (5) around the link connector (102) to clip into blind holes (105) of the link connector (102) thereby fixing the gripping device (1) onto the link connector (102), and actuation of the guide handle (7), via the threaded link, pushes the push tube (8) inside the guide body (4) into contact with the connecting rod (104) providing alignment between principal axes of said gripping device (1) and those of the link connector (102) and ensuring that the connecting rod (104) is kept inside of said link connector, wherein release of the lever (9) moves the sleeve (5) to cause the flexible tabs (5a, 5b) to open for release (3) the gripping device (1) from the link connector (102) after establishing and screwing the set screw (101) inside the link connector (102). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gripping device (1) enabling the introduction and attachment of a set screw (101) within a U-shaped link connector (102) of a polyaxial or monoaxial pedicle screw (103) to immobilize a connecting rod (104) of an osteosynthesis device (100), the gripping device comprising:
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a guide handle (7); a guide body (4) comprised of longitudinal tube (4a) with i) a first end comprising lateral and opposing recesses (4b, 4c) opening to an outside to provide a passage of the connecting rod (104), the recesses (4b, 4c) delimiting retaining branches (4d, 4e) in which guide slots (4f, 4g) are arranged, and ii) an opposite, second end; a threaded link between the guide handle (7) and the second end of the longitudinal tube (4a); a push tube (8) located and guided inside the guide body (4); a sleeve (5) with flexible tabs (5a, 5b), the sleeve (5) being mounted around the guide body (4); a lever (9) connected to the second end of the guide body (4), the release lever (9) forming a pivot connection with the guide body (4), wherein, with the lever (9) engaged and with the retaining branches (4d, 4e) of the guide body (4) resting against an upper edge of branches of the link connector (102), a force of pressure on the guide handle deforms the flexible tabs (5a, 5b) of said sleeve (5) around the link connector (102) to clip into blind holes (105) of the link connector (102) thereby fixing the gripping device (1) onto the link connector (102), and actuation of the guide handle (7), via the threaded link and, pushes the push tube (8) inside the guide body (4) into contact with the connecting rod (104) providing alignment between principal axes of said gripping device (1) and those of the link connector (102) and ensuring that the connecting rod (104) is kept on the inside of said link connector, the guide handle, the guide body, and the push tube extending along the principal axis of the gripping device, wherein release of the lever (9) moves the sleeve (5) to cause the flexible tabs (5a, 5b) to open for release (3) the gripping device (1) from the link connector (102) after establishing and screwing the set screw (101) inside the link connector (102). - View Dependent Claims (10)
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Specification