KR20090119938A - Convenient and strong implant screw and abutment - Google Patents

Abstract

PURPOSE: Convenient and strong implant screw and abutment are provided, which can easily insert a driver blade into a screw and reduce loosening of the screw. CONSTITUTION: A screw used in an implant comprises an insertion hole(24) which is formed in the upper side and in which a driver insertion hole of a screw is formed; an upper side(23) formed in the exterior of the insertion hole; and an incline(22) with a range of 0-80 degrees. The length of the screw head is 4-20mm. The depth of a joint groove of the screw driver blade has a depth of 2-20mm. The cross section of the upper side of the head of the screw becomes small towards the bottom plane of the screw head. The diameter of an abutment used in the implant becomes small towards the lower base.

Description

 Comfortable and strong implant screw and abutment

This is a screw and abutment for tightening abutments to implants or prosthetics to abutments.

If you are using an implant driver, it is difficult to pinpoint the screwdriver's blade exactly into the screw inlet. In addition, the driver blade insertion hole is so deep that the screw insertion hole may not be visible in the prosthetic surface. In addition, there are frequent loosening of the screw, damage the groove when deleting the abutment, or the abutment is deleted tends to be weak due to the large amount of deletion.

A guide surface was provided on the outer surface of the driver blade insert.

Make the driver's head long.

Induces a physical bond between the screw and the inner surface of the abutment

The screwdriver blade can easily be screwed in.

Stronger bonds reduce screw loosening and increase abutment strength.

When using a free-angle driver, it is difficult to insert the driver blade correctly into the screw insertion part. So the guide surface is given to the outer surface of the driver blade insert.

As a result, the screwdriver blade can be screwed into the screw very easily.

In addition, in the screw used for the implant, the length of the screw head is 4mm to 20mm, and the screwdriver blade fastening groove is used to make a screw with a depth of 2mm to 20mm (Fig. 5), the abutment and the screw are deleted together at will Even if the screwdriver's insertion groove is always exposed to the upper part of the abutment, it is easy to loosen and tighten with a screwdriver. In the screw used for the implant, the cross section becomes smaller from the top surface 12 of the head of the screw toward the bottom surface 65 of the screw head, and the hole goes toward the lower surface 68 than the top hole of the inner cylinder 55 of the column column. If the abutment with smaller diameters is used together, tightening the screw strongly bonds the abutment's cylindrical inner surface with the screw head's outer surface, resulting in less screw loosening and a more rigid screw abutment assembly. In this case, if the screw also has a long screw groove, even if the screw and the abutment combination is deleted together may not break the screw.

Figure 1-Typical Implant Screw Illustration

Figure 2-Screw diagram with guide surface of the present invention

Figure 3-Typical implant screw and screwdriver fastening is hard to find the fastening groove in the figure

Figure 4-Guide surface shows that the fastening groove can be easily found in the implant screw and driver fastening figure

Figure 5-shows that the head of the screw is long and the screwdriver fastening groove of the screw is long

6-When the head of the screw is in the form of a conical column that becomes narrower toward the implant, and tightens the abutment in which the cylinder becomes narrower toward the implant, the screw is firmly coupled by the wide-surface contact of the head of the screw. Picture showing that

11-head of screw

12-Screw Top

21-head of screw

22-guided drawing

23-Screw Top

24-screwdriver blade fastening groove

31-driver torso

32-driver blade

34-screwdriver blade fastening groove

35-implant

41-driver torso

42-driver blade

Guide surface to guide 43-driver blades

44-screwdriver blade fastening groove

45-implant

51-driver blade

52-head of screw

53-screwdriver blade fastening groove

54-rent

55-Inner cylinder of renter

56-screw blade

57-implant

61-Before tightening the driver

After tightening the 62-driver

63-screwdriver blade fastening groove

64-head of screw

65-underside of the head of the screw

66-rent

67-Inner cylinder of renter

68-Bottom of renter's inner cylinder

69-implant

Claims (4)

In the screw used for the implant, the inclined surfaces 22, 43 between the top surfaces 12, 23 and 10 to 80 degrees on the outer surface of the insertion grooves 24, 34, 44 of the top where the screwdriver insertion grooves of the screw are provided. With screw For screws used in implants, screw heads are 4 mm to 20 mm in length and screwdriver blade fastening grooves have a depth of between 2 mm and 20 mm. In a screw used for an implant, a screw whose cross-sectional area becomes smaller from the upper surface 12 of the head of the screw to the lower surface 65 of the screw head In the abutment used for the implant, the abutment becomes smaller in diameter toward the lower surface 68 than the upper hole of the inner cylinder 55 of the abutment.

Images