Arch wire tail back-bending forceps
By designing a cross-hinged archwire tail-end retraction clamp with a retraction arm and a clamping arm, the problem of not being able to simultaneously activate the archwire closing curve and retraction in existing technologies has been solved, realizing dual operation of the archwire tail and improving the operational efficiency and precision of dental orthodontics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 郭海伦
- Filing Date
- 2025-04-01
- Publication Date
- 2026-05-01
AI Technical Summary
Existing rebending pliers cannot simultaneously activate the bowwire closing bend and rebend the bowwire, lacking clamping and pulling functions.
A bowwire tail-end rewinding clamp was designed, featuring a cross-hinged rewinding arm and a clamping arm connected by an elastic element to achieve coordinated movement of the rewinding arm and the clamping arm, which can activate the bowwire closing curve and perform rewinding.
It enables dual manipulation of the archwire tail, allowing for both activation and retraction, thus improving the efficiency and precision of the orthodontic process.
Smart Images
Figure CN224179807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire bending pliers, specifically to wire bending pliers for bow wire tails. Background Technology
[0002] When dentists correct a patient's teeth, they typically attach brackets to the tooth surface and then thread archwires through the brackets. The archwires then provide the force to straighten the teeth. The end of the archwire usually extends beyond the bracket, and the dentist uses bending pliers to bend it back. The bending pliers consist of two bending arms, which cross each other and are hinged together in the middle to form an "X" shape. The front of the first bending arm is on top, and the front of the second bending arm is on the bottom, leaving a bend between them. The front of the second bending arm is a U-shape with an upward opening, including front and rear supports and an opening between the two supports. During the recurve bending process, the dentist first inserts the front parts of the two recurve bending arms into the patient's mouth, allowing the archwire tail to rest on the rear support of the second recurve bending arm and extend longitudinally to the opening. Then, the rear parts of the two recurve bending arms are brought together, causing the front parts of the two arms to move closer together. During this process, the front part of the second recurve bending arm supports the rear section of the archwire tail, while the front part of the first recurve bending arm moves downwards into the opening of the lower recurve head, pushing against the front section of the archwire tail and bending it downwards. This achieves the recurve bending of the archwire. Some archwires have a closing curve; during recurve bending, the archwire must first be pulled a certain distance away from the bracket to activate the closing curve before recurve bending can be performed. However, current recurve bending pliers typically only have the recurve bending function and cannot be used to clamp or pull the archwire, thus failing to activate the archwire closing curve. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a bow wire tail bending pliers, which can be used to activate the bow wire closing curve and to bend the bow wire back.
[0004] To solve the above-mentioned technical problems, the present invention provides a bowwire tail bending clamp, comprising a first and a second bending arm. The two bending arms cross each other and are hinged together to form an "X" shape. The front part of the first bending arm is positioned above the front part of the second bending arm, with a bending position between them for the bowwire tail to enter. When the rear parts of the two bending arms are closed, the front parts move closer together to bend the bowwire tail that has entered the bending position. Behind the bending position are two clamping arms, a first and a second clamping arm. The first and second clamping arms extend from the first and second clamping arms and are respectively connected to the first and second bending arms by elastic elements. The front parts of the two clamping arms are positioned one above the other, with a clamping position between them for the bowwire to enter. When the rear parts of the two bending arms are closed, the elastic elements move the front parts of the two clamping arms closer together to clamp the bowwire that has entered the clamping position. When they are closed further, the elastic elements deform elastically, causing the front parts of the two bending arms to move closer together to bend the bowwire tail that has entered the bending position.
[0005] Furthermore, the front ends of the first and second bending arms are respectively provided with lateral first and second bending heads. The first and second bending heads are staggered, with the second bending head located behind the first bending head. The bending position is located between the first and second bending heads. When the front parts of the two bending arms are close to each other, the second bending head supports the rear section of the bow wire tail, and the first bending head pushes the front section of the bow wire tail downward, thereby bending the bow wire tail that has entered the bending position downward.
[0006] Furthermore, the front ends of the first and second clamping arms are provided with two lateral clamping heads. The clamping heads and the return bending heads are located on the same side, and the two clamping heads are in the same position in the front and rear directions. The clamping position is located between the two clamping heads. When the rear parts of the two return bending arms are closed, the elastic element drives the two clamping heads at the front of the two clamping arms to approach each other and clamp the bowwire that has entered the clamping position.
[0007] Furthermore, the two clamping arms cross each other and are hinged together to form an "X" shape. The elastic element extends from the rear of the two clamping arms. When the rear of the two return arms are closed, the elastic element drives the rear of the two clamping arms to close together, thereby driving the front of the two clamping arms to move closer to each other and clamp the bowwire that has entered the clamping position.
[0008] Furthermore, the two clamping arms and the two return arms are hinged to the same hinge axis.
[0009] Furthermore, the second bending arm is equipped with a limiting part. The front parts of the two bending arms are close to each other. The tail of the bow wire, which is supported by the front part of the second bending arm and held by the two clamping arms, is blocked by the clamping arm at the front, thus preventing the second bending arm from moving upward.
[0010] This utility model's bowwire back-bending pliers can be used to both activate the bowwire closing curve and back-bend the bowwire. The specific operation is as follows:
[0011] The dentist inserts the front of the bending forceps into the patient's mouth, positioning the archwire between the front of the two clamping arms and the tail of the archwire between the front of the two bending arms. To activate the closing curve: the rear of the two bending arms close, causing the front of the two clamping arms to move closer together via an elastic element, clamping the archwire. The archwire can then be pulled a certain distance away from the bracket, activating the closing curve. Because the two bending arms are connected by an elastic element, even when the front of the clamping arms has contacted the archwire and cannot move closer together, the rear of the two bending arms can still close, causing the elastic element to deform elastically. In other words, even if the clamping arms stop moving, the rear of the two bending arms can still close. After activating the closing curve, when the archwire needs to be bent back, the dentist keeps the rear of the two bending arms closing, causing the front of the two bending arms to move closer together and bend the tail of the archwire. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a backbend pliers.
[0013] Figure 2 This is an exploded view of the bend clamp.
[0014] Figure 3 This is a schematic diagram of the backbend clamp, bow wire, and bracket. In the diagram: the bow wire is in the clamping position, and the bracket at the tail of the bow wire and the outermost edge is in the backbend position.
[0015] Figure 4 This is a schematic diagram of the backbend clamps, bow wire, and bracket. The two clamping heads of the two clamping arms in the diagram are in contact with the bow wire.
[0016] Figure 5 This is a schematic diagram of the back bending pliers, the bow wire, and the bracket. In the diagram, the two clamping heads of the two clamping arms clamp the bow wire, and the two back bending heads of the two back bending arms are close to the bracket.
[0017] Figure 6 This is a schematic diagram of a backbend pliers, bow wire, and bracket. In the diagram, the backbend pliers are pulling the bow wire away from the bracket.
[0018] Figure 7 This is a schematic diagram of the back bending clamp, the bow wire, and the bracket. In the diagram, the back bending head of the second back bending arm supports the rear section of the bow wire tail, and the rear part of the first clamping arm blocks the limiting part.
[0019] Figure 8 It is a three-dimensional schematic diagram of the back bending clamp, the bow wire, and the bracket. In the diagram: the back bending head of the second back bending arm supports the rear section of the bow wire tail, and the rear part of the first clamping arm blocks the limiting part.
[0020] Figure 9 This is a schematic diagram of the back bending pliers, bow wire, and bracket. The two back bending heads of the two back bending arms in the diagram have already back bent the tail of the bow wire. Detailed Implementation
[0021] The present invention will be further described in detail below with reference to specific embodiments.
[0022] See bow wire tail bend clamp Figure 1 and Figure 2It includes two return arms 1 and 2, which cross and hinge together to form an "X" shape. The hinge axis 9 is the axis in the left-right direction, with the first return arm 1 on the right and the second return arm 2 on the left. The front part 11 of the first return arm 1 is above and the front part 21 of the second return arm 2 is below. The front ends of the first and second return arms 1 and 2 are provided with two return heads 111 and 211 extending to the left. The two return heads 111 and 211 are staggered, with the second return head 211 located behind the first return head 111. A return position 100 is left between the first and second return heads 111 and 211. This bending clamp includes two clamping arms, 3 and 4, which cross each other and are hinged together at the hinge shaft 9 to form an "X" shape. The first clamping arm 3 is located to the left of the second bending arm 2, and the second clamping arm 4 is located to the left of the first clamping arm 3. The front part 31 of the first clamping arm 3 is positioned above the front part 41 of the second clamping arm 4. The front ends of the first and second clamping arms 3 and 4 are provided with two clamping heads 311 and 411 extending to the left. The two clamping heads 311 and 411 are in the same position in the front-back direction and are both located behind the bending position 100. A clamping position 300 is left between the first and second clamping heads 311 and 411, and the clamping position 300 is also located behind the bending position 100. The first and second clamping arms 3 and 4 have their rear portions 32 and 42 respectively engaged with first and second elastic strips 5 and 6. The first elastic strip 5 acts as an elastic element, extending rearward from the rear portion 32 of the first clamping arm 3 to the rear end of the first bending arm 1 and engaging with the rear end of the first bending arm 1. The second elastic strip 6 also acts as an elastic element, extending rearward from the rear portion 42 of the second clamping arm 4 to the rear end of the second bending arm 4 and engaging with the rear end of the second bending arm 4. The rear portion 22 of the second bending arm 2 is provided with a limiting block 221, which extends to the left beyond the left end face 205 of the rear portion 22 of the second bending arm 2 and is located on the right side of the second clamping arm 4.
[0023] See Figure 3 In this embodiment, the rewinding pliers correspond to a 0.5mm diameter archwire 7. They can be used to activate the closing curve of the archwire 7 (not shown in the figure) and to rewind the archwire 7. The 0.5mm diameter archwire 7 with the closing curve is inserted into the bracket 8. When the closing curve is not activated, the tail 71 of the archwire 7 is located at the outermost edge of the bracket 8.
[0024] Before activating the closing curve and rewinding the archwire 7, the doctor needs to complete the following preparatory work:
[0025] See Figure 3Hold the rear parts 12 and 22 of the first and second bending arms 1 and 2, and move them away from each other, causing the front parts 11 and 21 of the first and second bending arms 1 and 2 to move away from each other until the distance between the front parts 11 and 21 of the first and second bending arms 1 and 2 is greater than the height of the bracket 8. Insert the existing mouth mirror (not shown in the figure) into the patient's mouth and use the mouth mirror to observe the condition of the tail 71 of the archwire 7 and the outermost bracket 8. Then, insert the front part of the bending forceps into the patient's mouth, allowing the archwire 7 to enter the clamping position 300 between the two clamping heads 311 and 41 of the front parts 31 and 41 of the two clamping arms 3 and 4, and allow the tail 71 of the archwire 7 and the outermost bracket 8 to enter the bending position 100 between the two bending heads 111 and 211 of the front parts 11 and 21 of the two bending arms 1 and 2.
[0026] When it is necessary to activate the shutdown mechanism, the doctor shall proceed as follows:
[0027] See Figure 3 When the rear parts 12 and 22 of the two return arms 1 and 2 are brought together, the rear parts 12 and 22 of the two return arms 1 and 2, via the two elastic strips 5 and 6, drive the two clamping heads 311 and 41 of the front parts 31 and 41 of the two clamping arms 3 and 4 to move closer together until the two clamping heads 311 and 411 of the front parts 31 and 41 of the two clamping arms 3 and 4 make contact with the bowwire 7 from top to bottom, thus initially clamping the bowwire 7. Figure 4 As shown. In this state, the front parts 31 and 41 of the two clamping arms 3 and 4 cannot continue to approach each other, but the rear parts 12 and 22 of the two return arms 1 and 2 can still continue to close and cause the elastic elements 5 and 6 to undergo elastic deformation. That is to say, even if the two clamping arms 3 and 4 stop moving, the rear parts 12 and 22 of the two return arms 1 and 2 can continue to close. Continue to let the rear parts 12 and 22 of the two return arms 1 and 2 close, causing the two return heads 111 and 211 of the front parts 11 and 21 of the two return arms 1 and 2 to approach each other and cause the two elastic strips 5 and 6 to undergo elastic deformation, until the distance between the two return heads 111 and 211 and the bracket 8 is greater than 0 and less than 1 mm (other embodiments can be changed to other values, such as greater than 0 and less than 2 mm), such as Figure 5 As shown. In this state, the two return bends 111 and 211 are close to the bracket 8 but not in contact with it. The two elastic strips 5 and 6 apply elastic force to the two clamping heads 311 and 411 of the two clamping arms 3 and 4 respectively, so that the two clamping heads 311 and 411 together firmly clamp the bowwire 7. See Figure 6 Move the back bending pliers forward so that the bow wire 7 is pulled about 4mm to 5mm away from the outermost bracket 8 through the back bending pliers to activate the closing bend. In this state, the tail 71 of the bow wire 7 extends forward to the front of the outermost bracket 8, and the two back bending heads 111 and 211 of the two back bending arms 1 and 2 are also located in front of the outermost bracket 8.
[0028] After activating the closing curve, when the archwire 7 needs to be bent back, the doctor shall perform the following procedure:
[0029] See Figure 7 and Figure 8 First, let the rear parts 12 and 22 of the two return arms 1 and 2 continue to close, thus causing the two elastic strips 5 and 6 to deform elastically. Simultaneously, this causes the front parts 11 and 21 of the two return arms 1 and 2 to move closer together and the limiting block 421 to move closer to the rear part 32 of the first clamping arm 3, until the rear part 32 of the first clamping arm 3 blocks the limiting block 221. In this state, the second bend head 211 of the second return arm 2 precisely supports the rear section 712 of the bowwire 7's tail 71. The rear part 32 of the first clamping arm 3, via the limiting block 221, limits the second return arm 2, preventing it from moving further upward. Keep the second return arm 2 stationary, then let the rear part 12 of the first return arm 1 move upward, thus causing the rear parts 12 and 22 of the two return arms 1 and 2 to continue closing, thus continuing to bring the front parts 11 and 21 of the two return arms 1 and 2 closer together. Then, as... Figure 9 As shown, the rear part 12 of the first bending arm 1 causes the first elastic element 5 to deform elastically and causes the first bending head 111 of the front part 11 of the first bending arm 1 to push the front section 711 of the bow wire 7 tail 71 downward, thereby bending the bow wire 7 tail 71 downward, thus realizing the bending of the bow wire 7 tail 71.
[0030] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.
Claims
1. A bowwire tail bending clamp, comprising a first and a second bending arm, the two bending arms intersecting and hinged together to form an "X" shape, with the front part of the first bending arm positioned above and the front part of the second bending arm positioned below, leaving a bending position between them for the bowwire tail to enter; when the rear parts of the two bending arms are brought together, the front parts move closer together to bend the bowwire tail that has entered the bending position, characterized in that: Behind the bend position are two clamping arms, the first and the second. The first and the second clamping arms extend out and are connected to the first and the second bend arms respectively by elastic elements. The front parts of the two clamping arms are one above the other, leaving a clamping position for the bowwire to enter. When the rear parts of the two bend arms are closed, the elastic elements drive the front parts of the two clamping arms to move closer together and clamp the bowwire that has entered the clamping position. When they continue to close, the elastic elements deform elastically and drive the front parts of the two bend arms to move closer together to bend the tail of the bowwire that has entered the bend position.
2. The bowwire tail bending pliers according to claim 1, characterized in that: The front ends of the first and second bending arms are respectively provided with lateral first and second bending heads. The first and second bending heads are staggered, with the second bending head located behind the first bending head. The bending position is located between the first and second bending heads. When the front parts of the two bending arms are close to each other, the second bending head supports the rear section of the bow wire tail, and the first bending head pushes the front section of the bow wire tail downward, thereby bending the bow wire tail that has entered the bending position downward.
3. The bowwire tail bending pliers according to claim 2, characterized in that: The front ends of the first and second clamping arms are provided with two lateral clamping heads. The clamping heads and the return bending heads are located on the same side. The two clamping heads are in the same position in the front and rear directions. The clamping position is located between the two clamping heads. When the rear of the two return bending arms are closed, the elastic element drives the two clamping heads at the front of the two clamping arms to approach each other and clamp the bowwire that has entered the clamping position.
4. The bowwire tail bending pliers according to claim 1, characterized in that: The two clamping arms cross each other and are hinged together to form an "X" shape. The elastic element extends from the rear of the two clamping arms. When the rear of the two return arms are closed, the elastic element drives the rear of the two clamping arms to close together, thereby driving the front of the two clamping arms to move closer to each other and clamp the bowwire that has entered the clamping position.
5. The bowwire tail bending pliers according to claim 4, characterized in that: The two clamping arms and the two return arms are hinged to the same hinge axis.
6. The bowwire tail bending pliers according to claim 1, characterized in that: The second bending arm is equipped with a limiting part. The front parts of the two bending arms are close to each other. The front part of the second bending arm supports the tail of the bow wire that has been clamped by the two clamping arms. The clamping arm with the front part on top blocks the limiting part, thus preventing the second bending arm from moving upward.