METHOD FOR PRODUCING A DRILL ASSISTANCE DEVICE FOR AT LEAST ONE IMPLANT HOLE IN A BONE STRUCTURE AND DEVICE OBTAINED
First Claim
1. Method for producing a device, called drill assistance device, for assisting with the positioning and production by drilling of at least one implant hole in a bone structure of a patient for the placement of at least one implant, in whichone makes, from tomographic data representative of an anatomical zone, a three-dimensional solid reproduction (12) of said anatomical zone;
- one makes, from the three-dimensional solid reproduction (12), a drill assistance device (30) comprising a rigid base (35) able to position itself and fix itself on the three-dimensional solid reproduction (12), this drill assistance device (30) comprising, for each drilling to be done, at least one drill guide (34, 38) able to define the position, the axial orientation and the depth of this drilling, each drill guide (34, 38) being rigidly supported by the base (35), characterized in thatthe three-dimensional solid reproduction (12) consists of a reproduction of an internal and peripheral portion of said bone structure, exempt, at least in the vicinity of each implant hole, from the surrounding non-osseous tissues and mucosa,the three-dimensional solid reproduction (12) is made with sufficient precision to reproduce the surface irregularities and the internal density variations of the bone structure,said rigid base (35) having at least one surface, called contact surface, adapted to be able to bear in contact with an external surface portion of the three-dimensional solid reproduction (12), and therefore also later in contact with a peripheral surface portion of said bone structure,said contact surface having a surface state adapted to fit the surface irregularities of this surface portion and so as to be able to fit onto this surface portion while being rigidly maintained in relation to said three-dimensional solid reproduction (12), and therefore also later on said bone structure, at least in part thanks to this fitting, in one single possible location.
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Abstract
According to this method, one makes a three-dimensional solid reproduction (12) of the anatomical zone of implantation and, from this reproduction, a drill assistance device (30) comprising a rigid base (35) provided with at least one drill guide (34, 38). According to the invention,—the three-dimensional solid reproduction (12) consists of a reproduction of an internal and peripheral portion of said bone structure, exempt, at least in the vicinity of each implant hole, from the surrounding non-osseous tissues and mucosa,—said rigid base (35) having at least one surface, called contact surface, adapted to be able to bear in contact with an external surface portion of the three-dimensional solid reproduction (12), and therefore also later in contact with a peripheral surface portion of said bone structure.
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Citations
41 Claims
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1. Method for producing a device, called drill assistance device, for assisting with the positioning and production by drilling of at least one implant hole in a bone structure of a patient for the placement of at least one implant, in which
one makes, from tomographic data representative of an anatomical zone, a three-dimensional solid reproduction (12) of said anatomical zone; -
one makes, from the three-dimensional solid reproduction (12), a drill assistance device (30) comprising a rigid base (35) able to position itself and fix itself on the three-dimensional solid reproduction (12), this drill assistance device (30) comprising, for each drilling to be done, at least one drill guide (34, 38) able to define the position, the axial orientation and the depth of this drilling, each drill guide (34, 38) being rigidly supported by the base (35), characterized in that the three-dimensional solid reproduction (12) consists of a reproduction of an internal and peripheral portion of said bone structure, exempt, at least in the vicinity of each implant hole, from the surrounding non-osseous tissues and mucosa, the three-dimensional solid reproduction (12) is made with sufficient precision to reproduce the surface irregularities and the internal density variations of the bone structure, said rigid base (35) having at least one surface, called contact surface, adapted to be able to bear in contact with an external surface portion of the three-dimensional solid reproduction (12), and therefore also later in contact with a peripheral surface portion of said bone structure, said contact surface having a surface state adapted to fit the surface irregularities of this surface portion and so as to be able to fit onto this surface portion while being rigidly maintained in relation to said three-dimensional solid reproduction (12), and therefore also later on said bone structure, at least in part thanks to this fitting, in one single possible location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Device, called drill assistance device (30), for assisting with the positioning and the production by drilling of at least one implant hole in a bone structure of a patient for the placement of at least one implant, comprising:
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for each drilling to be done, at least one drill guide (34, 38) able to define the position, the axial orientation and the depth of this drilling, a rigid base (35) having at least one surface, called contact surface, adapted to bear in contact with a peripheral surface portion of said bone structure, each drill guide (34, 38) being rigidly supported by the rigid base (35), characterized in that said contact surface of the rigid base (35) has a surface state adapted to fit the surface irregularities of said peripheral surface portion of the bone structure and so as to be able to fit onto this surface portion while being rigidly maintained relative to said bone structure at least in part thanks to this fitting, in one single possible location. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification