SINGLE ACTION LOCKING PEDICLE SCREWDRIVER
First Claim
1. An instrument for attachment to a screw assembly using a single action motion, said instrument further configured to insert a screw into a surgical site, said instrument comprising:
- a main shaft having a distal end, a locking tube, and a driver shaft, said locking tube slidably mounted within said main shaft and said driver shaft slidably mounted within said locking tube; and
a locking mechanism configured to lock said driver shaft in a fixed position in relation to said locking tube by translating a distal movement of one of said main shaft or said locking tube with respect to said driver shaft.
9 Assignments
0 Petitions
Accused Products
Abstract
An instrument for attaching a driver shaft to a screw assembly using a thrusting motion. The instrument has a main shaft, a locking tube, and a driver shaft. The locking tube is slidably mounted within the main shaft and the driver shaft is slidably mounted within the locking tube. The locking tube is configured to urge a jaw assembly of the instrument into a tensioned engagement with a body member of the screw assembly. A locking mechanism is also included and is configured to lock the driver shaft in a fixed position relative to the locking tube. The locking mechanism may be configured to lock the driver shaft with respect to the locking tube after a distal end of the main shaft engages the screw assembly using the single action.
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Citations
20 Claims
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1. An instrument for attachment to a screw assembly using a single action motion, said instrument further configured to insert a screw into a surgical site, said instrument comprising:
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a main shaft having a distal end, a locking tube, and a driver shaft, said locking tube slidably mounted within said main shaft and said driver shaft slidably mounted within said locking tube; and a locking mechanism configured to lock said driver shaft in a fixed position in relation to said locking tube by translating a distal movement of one of said main shaft or said locking tube with respect to said driver shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An instrument for attachment to a screw assembly using a single action motion, said instrument further configured to insert a screw assembly with a screw and a screw head into a surgical site, said instrument comprising:
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a housing; a main shaft having a proximal end coupled to said housing and a distal end with a screw jaw assembly, said screw jaw assembly having a pair of opposing jaws for selectively attaching to the screw assembly; a locking tube slidably disposed within said main shaft and having a proximal end coupled to said housing and a distal end configured to engage said screw jaw assembly by sliding between said pair of opposing jaws and exerting an outward force therebetween, said outward force between said pair of opposing jaws attaching said pair of opposing jaws to the screw assembly; and a drive shaft slidably disposed within said locking tube and having a distal end configured to engage the screw head of the screw assembly. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification