KR20190108696A - Dental device for ligating wire - Google Patents

Abstract

The present invention relates to a dental wire ligation device, which comprises: a casing including a tapered portion in an inner space and a pair of insertion holes; and a slide block slidably disposed within the casing and having a compression ball installed therein. Through the interaction between the tapered portion of the casing and the compression ball of the slide block, the wire introduced from the insertion holes can be selectively gripped and ligated.

Description

Dental Wire Ligation Device {DENTAL DEVICE FOR LIGATING WIRE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dental wire ligation devices, and to devices used to grip and bend or twist each other wire.

Frequent use of wire in dentistry For example, for orthodontic treatment, a method of attaching a bracket to a tooth, connecting and fixing each bracket with a wire, and pulling the bracket in a specific direction is used. At this time, it is necessary to twist the two strands of wire to each other, which is commonly referred to as 'ligation' (ligation).

Ligation is performed by hand, it is difficult to work and time-consuming because it is a job in a narrow oral cavity. Furthermore, if the ligation is inaccurate, the wire may loosen during prolonged use and may not achieve its intended purpose, such as orthodontics.

To solve this problem, for example, Patent No. 10-0472905 discloses a ligation apparatus for rotating a collet chuck while holding a wire using a collet chuck. However, in order to twist the wires of two strands with this ligation apparatus, the two strands of wire must be stacked and inserted side by side in a single collet chuck. If the wire slips against the collet chuck, the twist of the wire decreases as much as the collet chuck fails against the wire, so that the twist may not proceed smoothly.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a wire ligation apparatus capable of smoothly twisting two wires.

Other objects, specific advantages and novel features of the invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings.

In order to achieve the above object, the dental wire ligation apparatus according to the present invention has a rod shape extending between the first end and the second end in the longitudinal direction, the inner space is formed in the longitudinal direction, An adjustment hole penetrates radially from the inner space, and a pair of insertion holes penetrates from the first end to the inner space, and the casing can slide along the longitudinal direction of the casing in the inner space of the casing. And a slide block formed with a gripping hole in a longitudinal direction from one end toward the first end of the casing and a ball hole penetrating outwardly in a radial direction from the gripping hole, and a pressing inserted into the ball hole. The slide and engaging the slide block from the outside of the casing with the ball An actuating handle slidably mounted with the id block and a spring for biasing the slide block to the first end side with respect to the casing, wherein the pair of insertion holes of the casing are mutually adjacent at the first end of the casing; Starting from the spaced apart hole, the closer to one end of the slide block, the closer to each other, the inner space of the casing may include a first tapered portion whose inner diameter decreases toward the first end.

In the dental wire ligation apparatus according to the present invention, the slide block includes a second tapered portion whose outer diameter is reduced toward the first end of the casing, and the ball hole of the slide block is the second tapered portion of the slide block. Can be formed on.

In addition, the ball hole may have three through holes arranged along the circumference of the slide block with the same center angle, and the pressing ball may be inserted into the three ball holes one by one.

The spring may be disposed as a compression coil spring between the second end and the other end of the slide block in the inner space of the casing.

In the dental wire ligation apparatus according to the present invention, each of the insertion holes of the casing may have an opening extending to the first end. In addition, an opening to one end of the gripping hole of the slide block may be extended.

On the other hand, the operation handle may include a ring-shaped portion surrounding the outer peripheral surface of the casing.

In addition, the slide block may include a plurality of portions divided along a length direction, and the plurality of portions may be detachably coupled to each other.

According to the present invention, since the wires to be ligated are introduced into the respective insertion holes, the wires can be gripped by the pressing balls in the holding holes, so that the wires can be easily held even in the narrow oral cavity. In addition, when the dental wire ligation apparatus according to the present invention is rotated about its longitudinal axis while the wire is held, the two strands of wire begin to twist at relative distances spaced apart from each other, thereby enabling uniform and smooth twisting. In addition, since the insertion hole is spaced even if the wire slips against the pressing ball or the gripping hole in the gripping hole, the twisting between the two strands can be smoothly performed.

1 is an exploded perspective view of an embodiment of a dental wire ligation apparatus according to the present invention.
FIG. 2 is a combined perspective view of the embodiment of FIG. 1.
3 is a partial cross-sectional view of the embodiment of FIG. 1.
4 is a longitudinal cross-sectional view of FIG. 2, illustrating a first use state.
FIG. 5 is a longitudinal cross-sectional view of FIG. 2, illustrating a second use state.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the dental wire ligation apparatus according to the present invention.

1 and 2 are an exploded perspective view and a combined perspective view of an embodiment of a dental wire ligation apparatus according to the present invention.

The casing 110 is a rod-shaped member that forms an overall appearance, and the first end 110a and the second end 110b are positioned at both ends of the longitudinal direction, respectively. An inner space 111 is formed inside the casing 110. In Figures 1 and 2, the casing 110 is generally illustrated as having a hollow cylindrical shape, and in the following description, terms such as circumference and radius are used on the premise that the casing 110 is cylindrical. It is not necessary to have a cylindrical shape, but may also be an elliptical cylinder or a polygonal cylinder.

On the other hand, the inner space 111 of the casing 110 includes a first tapered portion 111a having a smaller diameter toward the first end 110a. The adjustment hole 112 penetrates radially from the inner space 111 of the casing 110. The adjusting hole 112 is elongated along the longitudinal direction of the casing 110. In addition, a pair of insertion holes 113 are formed penetrating from the internal space 111 to the first end 110a. The insertion hole 113 is for accommodating the wire, and in use, two strands of wire are divided into the pair of insertion holes 113 and inserted into the insertion hole 113. The insertion hole 113 may have one end that is open to the outside of the insertion hole 113 to facilitate insertion of the wire, and two insertion holes 113 at the opposite end, that is, at the opposite end toward the slide block 120 to be described below. This is illustrated as being merged into one. This is for guiding two strands of wires from each insertion hole 113 to one gripping hole 121 formed in the slide block 120, between the end of the insertion hole 113 and the end of the gripping hole 121. It may have a different geometric shape depending on the distance and the like. That is, unlike shown, the insertion holes 113 may not be combined at one end toward the slide block 120 but may be spaced apart.

In the illustrated example, the casing 110 is illustrated as being divided into three pieces, including a portion on the side of the first end 110a and a center portion, and a portion on the side of the second end 110b. May be added or subtracted as needed in consideration of convenience of manufacturing, assembly, and the like. Each of the pieces constituting the casing 110 may be joined to each other by conventional joining methods including fitting, screwing, or bonding.

The slide block 120 is accommodated to slide in the inner space 111 of the casing 110. Some of the outer diameter surfaces of the slide block 120 may include a second tapered portion 123 having a diameter reduced toward the first end 110a of the casing 110. The second tapered portion 123 is for interacting with the first tapered portion 111a of the inner space 111 of the casing 110. A gripping hole 121 is formed along its longitudinal direction from one end portion facing the first end 110a of the casing 110. The gripping hole 121 is a portion which subsequently receives the wire introduced through the insertion hole 113 of the casing 110 and faces toward the first end 110a of the casing 110 as in the case of the insertion hole 113. The tip may be extended. For the action of the ball hole 122 and the pressing ball 130 to be described below, at least the casing 110 of the casing 110 in the state that the slide block 120 is most advanced toward the first end (110a) of the casing 110 The first tapered portion (111a) should extend to a length of about this.

A ball hole 122 is formed through the gripping hole 121 in the radial direction, and the ball hole 122 is formed in the second tapered portion 123. In the illustrated example, the slide block 120 is illustrated as including a head 120a, a rod 120b, and a connecting block 120c, and a gripping hole 121 and a ball hole 122, and thus a second tapered portion. All the 123 are formed in the head 120a. The head 120a, the rod 120b, and the connecting block 120c may be made of different members, and as shown in FIG. 3, may be separated from each other in a conventional manner such as fitting and screwing, but may be integrally formed. It may be formed as. In the illustrated example, three ball holes 122 are arranged with a center angle of 120 ° from each other, and the number of the ball holes 122 is not particularly limited.

The compression ball 130 is accommodated in the ball hole 122 of the slide block 120. In the illustrated example, the pressing balls 130 are illustrated as three according to the number of the ball holes 122, but it is apparent that the number of the pressing balls 130 can be increased or decreased in accordance with the number of the ball holes 122. Compression ball 130 is gradually sliding while the outermost surface of the compression ball 130 is in contact with the first tapered portion (111a) as the slide block 120 slides toward the first end (110a) of the casing (110). Pressed by the first tapered portion 111a having a reduced diameter to enter the gripping hole 121, and when the wire is inserted into the gripping hole 121, the wire is placed on the inner wall of the gripping hole 121 or another pressing ball. To the side, and as a result, the wire is gripped between the inner wall of the gripping hole 121 and the pressing ball 130 or between the pressing balls. Subsequently, when the slide block 120 proceeds to the first end 110a side, the second tapered portion 123 of the slide block 120 contacts the first tapered portion 111a of the casing 110, and this point is It acts as a slide threshold towards the first end 110a of the slide block 120. On the contrary, when the slide block 120 is moved toward the second end 110b of the casing 110, the diameter of the first taper portion 111a of the pressing ball 130 gradually increases, so that the pressing ball 130 moves in the radial direction. This becomes free, and thus the pressure on the wire inserted in the gripping hole 121 is released. In other words, if the diameter of the pressing ball 130, and therefore the diameter of the ball hole 122 is properly selected, the pressing ball 130 selectively presses the wire in the gripping hole 121 without the second taper 123 to slide. The wire may be gripped with respect to block 120. Therefore, the second taper 123 may be omitted, or may be replaced by an enlarged diameter part or a locking step of which the diameter is suddenly expanded.

A spring 150 is disposed between the slide block 120 and the second end 110b of the casing 110 to bias the slide movement of the slide block 120. In the illustrated example, the spring 150 is illustrated as being disposed between the slide block 120 and the second end as a compression coil spring, but may also be a tension coil spring, disposed between the slide block 120 and the first end. May be

The operation handle 140 is disposed outside the casing 110 and coupled to the slide block 120 through the adjusting hole 112 of the casing 110. Therefore, the operation knob 140 is generally movable by the length of the adjustment hole (112). The operating handle 140 includes a ring-shaped portion surrounding the outer circumferential surface of the casing 110 in order to allow easy access in either circumferential direction of the casing 110. In the illustrated example, the operating knob 140 is illustrated as being coupled to the connecting block 120c of the slide block 120 by a screw, but may be coupled to another portion of the slide block 120, for example, the head 120a. The coupling means may also be coupled by conventional means other than screws.

Figure 4 is a cross-sectional view of a first use state of one embodiment of the dental wire ligation apparatus according to the present invention, Figure 5 is a cross-sectional view of a second use state.

The first use state illustrated in FIG. 4 is a state in which the gripping of the wire is prepared, and the operation knob 140 is moved to the second end 110b side of the casing to retract the slide block 120 and press the spring 150. One state is shown. At this time, the two strands of wires are separately inserted into the pair of insertion holes 113 of the casing 110, and the two strands of wires are combined to be inserted into the gripping holes 121 of the slide block 120. When the wire is sufficiently inserted into the gripping hole 121, that is, at least inserted into a position that can be in contact with the pressing ball 130, the external force holding the operating handle 140 is released. Then, as illustrated in FIG. 5, the compressed spring 150 expands to its original state and advances the slide block 120 toward the first end 110a of the casing 110. In this case, the pressing balls 130 are pressed while being in contact with the first tapered portion 111a of the casing 110 to hold the wire in the holding hole 121 as described above. When the casing 110 is rotated in this state, the two strands of wire are twisted with each other, and the ligation operation can be performed. When the ligation is completed, the ligation wire is pulled out of the gripping hole 121, and furthermore, the insertion hole 113 with the operation knob 140 retracted again, and then the ligation of the wire is cut to complete the ligation operation. Can be.

Embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

Claims (8)

A rod shape extending between the first end and the second end along the longitudinal direction, wherein an inner space is formed along the longitudinal direction, and an adjustment hole penetrates radially from the inner space, A casing formed by passing a pair of insertion holes into the inner space;
It is slidably received along the longitudinal direction of the casing in the inner space of the casing, a gripping hole is formed in the longitudinal direction from one end toward the first end of the casing and viewed outward in the radial direction from the gripping hole A slide block formed with holes therethrough,
Compression ball inserted into the ball hole,
An operating handle engaged with the slide block from the outside of the casing through the adjusting hole and slidably installed with the slide block;
A spring for biasing the slide block to the first end side relative to the casing,
The pair of insertion holes of the casing are closer to each other as the closer to one end of the slide block starting from the holes spaced from each other at the first end of the casing,
The inner space of the casing dental wire ligation apparatus comprising a first tapered portion whose inner diameter is smaller toward the first end.
The method of claim 1,
The slide block includes a second taper portion whose outer diameter is smaller toward the first end of the casing,
The ball hole of the slide block is a dental wire binding device formed in the second tapered portion of the slide block.
The method of claim 1,
And the ball hole includes three through holes having the same center angle and disposed along the circumference of the slide block, and the pressing balls are inserted one by one into the three ball holes.
The method of claim 1,
And the spring is a compression coil spring disposed between the second end and the other end of the slide block in the inner space of the casing.
The method of claim 1,
And the insertion holes of the casing are each extended with openings to the first ends thereof.
The method of claim 1,
The gripping hole of the slide block is a dental wire ligation device, the opening to one end is extended.
The method of claim 1,
And the actuating handle comprises a ring-shaped portion surrounding an outer circumferential surface of the casing.
The method of claim 1,
The slide block includes a plurality of portions divided along the longitudinal direction, the plurality of portions are dental wire ligation apparatus is detachably coupled to each other.

Images