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US 2018/0280106 A1Published application
Cranial fixation device
AssigneeDePuy Synthes Products, Inc.
InventorsMichael A. DeFusco, Gregory M. Schorn
Life of this patent
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Abstract
Cranial fixation devices are provided. For example, a cranial fixation device may include positive stops that provide visual and tactical feedback when a predetermined compression is applied once a medical device is inserted therein and placed in position.
Claims19
A cranial fixation device comprising:
- a cap comprising:
- a central body having a mating connector with a threaded portion projecting from a distal end of the central body;
- a pair of wings extending radially out from the central body;
- and
- a first opening extending from a proximal end of the central body to the distal end of the central body and through the threaded portion of the mating connector,
- a base comprising:
- a threaded central opening corresponding to the threaded portion of the mating connector, the threaded central opening being positioned on a proximal end of the base;
- a distal threaded portion configured to engage with an opening in a skull;
- a pair of wings extending radially out from the threaded central opening;
- and
- a second opening extending through the threaded central opening and the distal threaded portion;
- and
- a compression grommet configured to be placed into the threaded central opening of the base, the compression grommet having a third opening extending from the proximal end to the distal end of the compression grommet,
- the first opening, the second opening and the third opening being aligned when the cap mates with the base and forms an instrument lumen configured to accept a portion of an instrument cable,
- the threaded portion of the cap being configured to mate with the threaded central opening of the base, and
- at least one wing of the pair of wings of the cap having a projection protruding in a direction towards the base, and the each wing of the pair of wings of the base having a seat,
- wherein, when the instrument cable extends through the instrument lumen, the projection from at least one wing of the pair of wings of the cap and at least one of the seats in the pair of wings of the base are configured to create a torque stop when a predetermined compression of the compression grommet is applied by tightening the cap on the base, and
- when the predetermined compression of the compression grommet is applied, the compression grommet compresses against the instrument cable fixing the instrument cable in place at a determined depth.
15 more elements
A cranial fixation device comprising:
- a base comprising:
- a threaded central opening positioned on a proximal end of the base configured to mate with a mating connector of a cap;
- a distal threaded portion configured to engage with an opening in a skull;
- an opening extending through the threaded central opening and the distal threaded portion, the opening configured to receive a portion of an instrument cable;
- and
- a pair of wings extending radially out from the threaded central opening, each wing having a notch configured to receive another portion of the instrument cable.
3 more elements
The cranial fixation device of claim 17, wherein when a portion of the instrument cable is received in the respective notches, a portion of the instrument cable extends between the respective notches.
A cranial fixation device comprising:
- a cap comprising:
- a central body having a mating connector with a threaded portion projecting from a distal end of the central body;
- a first opening extending from a proximal end of the central body to the distal end of the central body and through the threaded portion of the mating connector,
- a base comprising:
- a threaded central opening corresponding to the threaded portion of the mating connector, the threaded central opening being positioned on a proximal end of the base;
- a distal threaded portion configured to engage with an opening in a skull;
- a pair of wings extending radially out from the threaded central opening;
- and
- a second opening extending through the threaded central opening and the distal threaded portion;
- and
- a compression grommet configured to be placed into the threaded central opening of the base, the compression grommet having a third opening extending from the proximal end to the distal end of the compression grommet,
- the first opening, the second opening and the third opening being aligned when the cap mates with the base and forms an instrument lumen configured to accept a portion of an instrument cable,
- the threaded portion of the cap being configured to mate with the threaded central opening of the base,
- wherein, when the instrument cable extends through the instrument lumen, the dimensions of the threaded central opening and the threaded portion are configured to create a torque stop when a predetermined compression of the compression grommet is applied by tightening the cap on the base, and
- when the predetermined compression of the compression grommet is applied, the compression grommet compresses against the instrument cable fixing the instrument cable in place at a determined depth.
12 more elements
Dependencies are inferred from the claim text.