Anchorage nail

Abstract

The utility model relates to an anchorage nail, which comprises a nail head part, a neck part and a threaded section, an accommodating cavity is expanded in a straight slot of the nail head part, and the cross section of the accommodating cavity is an inverted isosceles trapezoid with a wide upper bottom edge and a narrow lower bottom edge; and the width of the notch of the linear groove is reduced under the action of external force, so that the to-be-fixed object penetrating through the accommodating cavity is clamped. The clamp has the advantages of being unique in conception, reasonable in structure, easy to operate and stable in clamping. An arch wire and other fixing objects can penetrate through the containing cavity and are clamped by means of deformation of the linear groove; the containing cavity is designed in the line-shaped groove, the using function of the line-shaped groove is not affected, in addition, the planes machined on the two sides facilitate clamping operation of other tools, and the circular through holes provide additional fixing points.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dental treatment technical field, especially involve a kind of anchorage nail, and especially the scheme that the head of nail can be tightened deformation. BACKGROUND

[0002] Anchorage nail is a very small component in the field of dental treatment, but it plays a big role, and can provide riveting and anchoring effect. Generally, it has a nail head, a neck and a threaded segment. The nail head or the neck can be used to tie a steel wire or a rubber ring. For example, CN202010149100.6 discloses a tooth treatment target positioning device, which needs to use the nail head to clamp and fix the anchor bracket. The traditional anchorage nail cannot meet these needs well.

[0003] Therefore, a more reasonable technical solution is provided, which is the object of the present invention. SUMMARY

[0004] The utility model discloses a kind of anchorage nails, which can deform the nail head to clamp the fixed object.

[0005] The technical solution of the utility model is as follows: an anchorage nail includes a nail head, a neck and a threaded segment. The nail head has a one-slot groove, and a containing cavity is expanded in the one-slot groove. The containing cavity has an inverted isosceles trapezoidal cross-section with a wide upper base and a narrow lower base. Under the action of external force, the slot width of the one-slot groove of the nail head is contracted, thereby clamping the fixed object passing through the containing cavity.

[0006] The lower base of the containing cavity is equal to the slot width of the one-slot groove. After the nail head is deformed by external force, the upper base is contracted to form an effective clamping area in the shape of a rectangle or an isosceles trapezoid.

[0007] The nail head has two parallel planes on its sides.

[0008] The nail head has a circular hole on the two planes.

[0009] The utility model has the characteristics of unique design, reasonable structure, simple operation and stable clamping. The containing cavity allows the arch wire and other fixed objects to pass through and be clamped by the deformation of the one-slot groove. The containing cavity is designed in the one-slot groove, which does not affect the use function of the one-slot groove. In addition, the two planes on the sides facilitate clamping and operation by other tools, and the circular hole provides an additional fixing point. BRIEF DESCRIPTION OF DRAWINGS

[0010] The present invention will be further described below in conjunction with specific examples:

[0011] Figure 1 Anchorage nail schematic diagram

[0012] Figure 2 Front view of the anchorage pin

[0013] Figure 3 Side view of the anchorage pin

[0014] Figure 4 Clamping arch wire of the anchorage pin

[0015] wherein

[0016] 1 - pin head; 11 - one-slot; 12 - accommodating cavity; 13 - flat surface; 14 - through hole;

[0017] 2 - neck; 3 - threaded section; 4 - arch wire; DETAILED DESCRIPTION:

[0018] Referring to Figure 1 , Figure 2 and Figure 3 , the anchorage pin comprises a pin head 1, a neck 2 and a threaded section 3. The pin head 1 is provided with a one-slot 11, and an accommodating cavity 12 is formed by expanding the one-slot 11. The cross section of the accommodating cavity 12 is an inverted isosceles trapezoid with a wide upper base and a narrow lower base. The lower base of the accommodating cavity 12 is equal to the slot width of the one-slot 11. After the pin head 1 is deformed by external force, the upper base shrinks to form an effective clamping area in the shape of a rectangle or an isosceles trapezoid, which can clamp the object to be fixed through the accommodating cavity 12, especially the arch wire with a square cross section, reducing the torsion.

[0019] The initial state of the accommodating cavity 12 in the pin head 1 is an inverted isosceles trapezoid when the pin head 1 is not under force, and in the clamping state, the upper base shrinks to form an effective clamping area in the shape of a rectangle or an isosceles trapezoid. This design can better adapt to different diameters or shapes of the object to be fixed, improving the clamping effect.

[0020] The outer edges of the pin head 1 on both sides are processed with flat surfaces 13 parallel to the one-slot, and a circular through hole 14 is opened on the flat surfaces 13 on both sides. The circular through hole 14 can be used to pass through auxiliary fixation objects such as ligation wires, further enhancing the fixation effect.

[0021] The one-slot 11 of the pin head 1 can be accessed by a screwdriver, and the flat surfaces 13 on both sides can be operated by tools such as wrenches, providing convenience for clinical operation.

[0022] Referring to Figure 4 , the accommodating cavity 12 in the one-slot can be used to pass through the fixation object, and the pin head 1 can be deformed by using surgical forceps and other tools, thereby clamping the arch wire 4 and other objects that need to be fixed, which cannot be pulled out or twisted, providing reliable positioning for the correction. The cross section of the arch wire 4 is shown by a dashed line in the figure.

Claims

1. A anchorage pin comprising a pin head, a neck and a threaded segment, characterized in that: The head of the nail is expanded into a receiving cavity in the slot, the cross section of the receiving cavity is inverted isosceles trapezoid with wide upper base and narrow lower base; the slot width of the head of the nail is contracted under the action of external force, so as to clamp the object to be fixed through the receiving cavity.

2. A counter-anchorage according to claim 1, characterized in that: The lower base of the receiving cavity is equal to the slot width, and the upper base is contracted to form a rectangular or right isosceles trapezoidal effective clamping area after the deformation of the head of the nail under the action of external force.

3. A anchorage peg according to claim 1 or 2, wherein: The outer edge of the head of the nail is processed with a plane parallel to the slot.

4. A counter-ankle according to claim 3, characterized in that: A circular through hole is formed in the plane on both sides of the head of the nail.

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