Dental chair with headrest - Patent Review 5678894

Claims

What is claimed is:

1. An apparatus, comprising:

a pivotable chair including:

a reclinable back; and

a headrest connected to said reclinable back, said headrest including:

a bracket for attaching said headrest to said reclinable back; and

a pad connected to said bracket, said pad including an internal perimeter that defines a hole through which a prone patient's nose and mouth can protrude so that said prone patient's oral cavity can be reached from below said prone patient, wherein said internal perimeter includes:

a first section that varies substantially according to

(x).sup.2 +(y).sup.2 =r.sup.2 ;

a second section connected to said first section, said second section varying substantially according to y=mx+b;

a third section connected to said second section, said third section varying substantially according to

(x).sup.2 =-4c(y+k); and

a fourth section connected to said third section, said fourth section varying substantially according to y=-m(x-h)+b,

wherein said first section is located at the center of a bottom circular portion of the perimeter of the hole that surrounds the junction between the jowl and the neck of said patient, said third section is located at a vertex of an upper parabolic section of the perimeter of the hole that surrounds the bridge of the nose of said prone patient and r>c.

2. The apparatus of claim 1, wherein said pivotable chair includes a base portion connected to said reclinable back and an elevating mechanism connected to said base portion.

3. The apparatus of claim 1, wherein said pivotable chair includes a base portion connected to said reclinable back and a leg rest connected to said base portion, said leg rest being pivotable with respect to said base portion.

4. The apparatus of claim 1, wherein said pivotable chair includes a first armrest connected to said reclinable back and a second armrest connected to said reclinable back, said first armrest and said second armrest both being attached to said reclinable back with a hinge pin so as to swing from a chair configuration, through a bed configuration, to a below-point-blank configuration wherein a patient's arms are supported in a position that is below a plane of the pivotable chair when the pivotable chair is in the bed configuration.

5. A method of treating a dental patient, comprising utilizing the apparatus of claim 1.

6. An apparatus, comprising:

a pivotable chair including:

a reclinable back; and

a headrest connected to said reclinable back, said headrest including:

a bracket for attaching said headrest to said reclinable back; and

a C-shaped pad connected to said bracket, said pad including an internal perimeter that defines a hole through which a prone patient's nose and mouth can protrude so that said prone patient's oral cavity can be reached from below said prone patient, wherein said internal perimeter includes:

a first section that varies substantially according to

(x).sup.2 +(y).sup.2 =r.sup.2 ;

a second section connected to said first section, said second section varying substantially according to

(x).sup.2 +(y+k).sup.2 =(r').sup.2 ;

a third section connected to said second section, said third section varying substantially according to y=b;

a fourth section connected to said third section, said fourth section varying substantially according to

(x+h).sup.2 +(y+k).sup.2 =(r").sup.2 ; and

a fifth section connected to said fourth section, said fifth section varying substantially according to

(x+h).sup.2 +(y).sup.2 =(r'").sup.2,

wherein said first section, said second section, said third section, said fourth section and said fifth section of said pad roughly conform to the shape of the forehead and cheeks of said prone patient.

7. A method of treating a dental patient, comprising utilizing the apparatus of claim 6.

8. The apparatus of claim 6, wherein said pivotable chair includes a base portion connected to said reclinable back and an elevating mechanism connected to said base portion.

9. The apparatus of claim 6, wherein said pivotable chair includes a base portion connected to said reclinable back and a leg rest connected to said base portion, said leg rest being pivotable with respect to said base portion.

10. The apparatus of claim 6, wherein said pivotable chair includes a first armrest connected to said reclinable back and a second armrest connected to said reclinable back, said first armrest and said second armrest both being attached to said reclinable back with a hinge pin so as to swing from a chair configuration, through a bed configuration, to a below-point-blank configuration wherein a patient's arms are supported in a position that is below a plane of the pivotable chair when the pivotable chair is in the bed configuration.

11. An apparatus, comprising:

a pivotable chair including:

a reclinable back; and

a headrest connecte