CN205286560U - Pull out root canal pin's device - Google Patents

Abstract

The utility model relates to a device for pulling out root canal screws. The device for pulling out root canal screws includes a bracket and a screw mechanism, the bracket is provided with a screw hole, and the screw mechanism runs through the screw hole; the screw mechanism The lower end is provided with a root canal screw connection mechanism; during the minimally invasive tooth extraction process, the root canal screw is driven into the root canal of the residual root of the tooth, the root canal screw connection mechanism and the root canal screw are tightly connected, and through The pulling force generated by the continuous rotation of the screw mechanism drives the hook to pull the root canal nail, thereby pulling out the root canal nail and pulling out the entire residual root.

Description

A device for removing root canal nails

technical field

The invention relates to the technical field of medical instruments, in particular to a device for pulling out root canal nails.

Background technique

At present, when extracting teeth in oral clinical surgery, the principle of lever mechanics is applied, and the instruments used usually include tooth lifters, chisels, hammers, and tooth extraction forceps. The method is to place the tooth lifter and the chisel at the interdental space and the corresponding alveolar ridge, forcefully pry or chisel the tooth loose, and then hold the pliers, or shake or twist and pull, to extract the affected tooth. There are many problems in using the above instruments to extract teeth. First, the extraction operation mainly depends on the dentist’s experience and technology. It needs a long clinical training to master it proficiently. It is difficult for young doctors to master it. Second, if you encounter a broken tooth root, Above-mentioned instrument can't locate on the residual root, often very troublesome, needs to cut gingiva sometimes, brings a lot of misery to patient; The 3rd, no matter adopt tooth lifter, chisel, hammer or tooth extraction forceps etc. all can cause wound when extracting the residual root of anterior tooth The area is large, which brings pain to the patient and affects the appearance; therefore, it is necessary to seek a minimally invasive tooth extraction device.

The current minimally invasive tooth extraction mainly uses the wedge force and slight rotational force of the minimally invasive tooth extraction knife to cut off the periodontal ligament and squeeze the alveolar bone to increase the gap at the same time, and then use the tooth extraction forceps to extract the tooth with a slight force, although this This minimally invasive tooth extraction method greatly reduces the damage to the periodontal tissue during the entire tooth extraction process, but due to the use of tooth extraction forceps to extract teeth, it will inevitably touch the patient's gums, causing varying degrees of damage, which brings a lot of pain to the patient. Painful, and minimally invasive tooth extraction instruments are all imported, expensive and cannot be popularized, there is no special residual root extraction tool on the market at present.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for pulling out root canal screws. It is tightly connected with the root canal nail, and the pulling force generated by the continuously rotating screw mechanism drives the hook to pull the root canal nail, thereby pulling out the root canal nail and removing the entire residual root.

To achieve the above object, the present invention adopts the following technical solutions:

A device for pulling out root canal screws, the device for pulling out root canal screws includes a bracket and a screw mechanism, the bracket is provided with a screw hole, and the screw mechanism passes through the screw hole; the lower end of the screw mechanism is provided with a root canal Nail connection mechanism.

In the present invention, when implementing minimally invasive tooth extraction, first select the wedge force and rotational force produced by the existing minimally invasive tooth extraction knife to cut off the periodontal ligament and squeeze the alveolar bone to increase the gap at the same time, and then combine it with the extraction of the root canal screw. The root canal screw that matches the device is driven into the root canal of the residual root to complete the fixed connection between the root canal screw and the residual root; The root canal screw connecting mechanism provided at one end of the screw mechanism is closely connected with the root canal screw, and the root canal screw is pulled out by the pulling force generated by continuously rotating the screw mechanism upwards to pull out the residual root.

In the present invention, the bracket can be a bracket of any shape, as long as it can provide a fulcrum for pulling out root canal screws; preferably, the bracket includes a first support rod and a second support rod, and the first One end of the support rod and the second support rod is connected through a cross bar; the root canal nail connection mechanism is arranged on one side of the bracket opening.

When the top of the root canal nail used for minimally invasive tooth extraction is provided with a small hole, the root canal nail connection mechanism can be set as a draw hook that can pass through the small hole, and the draw hook is connected to the root canal nail through the small hole; In the present invention, the number of small holes can be multiple, as long as the root canal nail connection mechanism can be closely connected with the root canal nail; preferably, the hook and the screw mechanism are detachably connected; This setting is convenient for disassembling and sterilizing the retractor, and also facilitates the storage of the device for removing root canal nails; preferably, the end of the screw mechanism is provided with an annular groove, and the retractor includes a hook tail, a hook body and a hook tip, The hook tail is embedded in the annular groove provided at the end of the screw mechanism; with this arrangement, by inserting the hook tail of the drag hook into the annular groove, the drag hook is prevented from detaching from the screw mechanism, and the tightness of the connection between the drag hook and the screw mechanism is increased More preferably, the hook tail is set as a collar matching the annular groove, the entire structure of the hook tail is set as a collar, and the collar is embedded in the annular groove, which can more conveniently realize the pull hook Tight connection with the screw mechanism.

When the top of the root canal nail used for minimally invasive tooth extraction is not provided with a small hole, the root canal nail connection mechanism can be set as a clamping mechanism, and the clamping mechanism realizes its connection with the root canal nail by clamping the top of the root canal nail. The connection between the pipe nails; in the present invention, the clamping mechanism can be any mechanism capable of clamping the root canal nails, for example, it can be a clamping gun or a clamping arm; preferably, the clamping mechanism includes An active rod, a clamping base is fixed on the active rod, a clamping arm is arranged on the clamping base, and the clamping arm is composed of a first clamping arm and a second clamping arm; The set first clamping arm and the second clamping arm clamp the root canal nail to realize tight connection.

Preferably, the screw mechanism is a screw rod.

Preferably, a rotating head is provided on the screw mechanism on the side opposite to the opening direction of the stent; when the screw mechanism is unscrewed upwards, the medical personnel can simply rotate the rotating head provided on the top of the screw mechanism, which can facilitate the operation of the medical personnel ; Further preferably, the rotating head and the screw mechanism are spirally connected, and this setting facilitates the replacement of the rotating head; more preferably, the rotating head is provided with a handle bar, and the handle bar can be set to It is convenient for medical staff with little strength, especially female doctors, and the use of the handle bar can avoid the pain caused by direct operation of the rotating head with fingers.

As an embodiment, the bottom of the bracket is provided with a recess. The present invention provides a recess at the bottom of the bracket. During the root canal screw removal process, the recess at the bottom of the bracket can just touch two adjacent teeth. This aspect is Pulling out the root canal screw provides a force application point, on the other hand, it increases the stability of the entire tooth extraction device and prevents the sliding of the bracket.

As another embodiment, the end of the bracket is provided with a clamping portion. In the present invention, the clamping portion includes a first clamping portion and a second clamping portion, and the first clamping portion and the second clamping portion The two clamping parts are arranged opposite to each other. The distance between the first clamping part and the second clamping part is the thickness of one tooth; when the root canal screw is extracted, the first clamping part and the second clamping part clamp the residual root to be extracted The adjacent teeth, which can effectively avoid possible damage to the adjacent teeth when pulling out the residual root.

Preferably, the clamping part and the bracket are detachably connected; with this arrangement, the clamping part can be disassembled when needed, so as to reduce the distance between the tooth to be extracted and the pull hook, and facilitate force application .

Preferably, the clamping part is made of soft elastic material, and the use of elastic material can improve the patient's comfort during tooth extraction.

Compared with the prior art, the present invention has the following beneficial effects:

The device for extracting the root canal screw provided by the present invention realizes the extraction of the root canal screw through the interaction between the root canal screw connection mechanism and the screw mechanism, thereby extracting the residual tooth root; Larger trauma area will be caused, and will not cause fear to the patient; the bracket used in the present invention is especially suitable for the minimally invasive tooth extraction under the condition that there are few missing teeth, often only one tooth is missing, and the adjacent teeth are relatively strong. Extraction of pipe nails; the invention has simple structure and reasonable design, and the trauma generated in the minimally invasive tooth extraction process is the smallest, which greatly improves the comfort level of patients.

Description of drawings

Fig. 1 is a schematic diagram of a device for extracting root canal nails provided in Example 1;

Fig. 2 is a schematic diagram of a bracket of a device for removing root canal nails provided in Example 1;

3 is a schematic diagram of the screw rod of the device for removing root canal screws provided in Embodiments 1 to 3;

4 is a schematic diagram of the retractor of the device for removing root canal nails provided in Embodiments 1 to 3;

Fig. 5 is the schematic diagram of the device for extracting root canal nail provided by embodiment 2;

Fig. 6 is the schematic diagram of the device for extracting root canal nail provided by embodiment 3;

Fig. 7 is the schematic diagram of the bracket of the device for extracting root canal nails provided in Example 3;

8 is a schematic diagram of the device for removing root canal nails provided in Example 4;

FIG. 9 is an enlarged schematic view of the clamping mechanism of the device for removing root canal nails provided in Example 4. FIG.

detailed description

The present invention will be further described below in combination with specific embodiments.

In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It implies that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limitations on this patent.

In addition, if terms such as "first" and "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used for The relative importance and quantity of the indicated means, elements or components are stated or implied, and should not be construed as indicating or implying relative importance.

The invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. The following description is only exemplary and does not limit the protection scope of the invention.

Example 1

Fig. 1 is a schematic diagram of a device for extracting root canal screws. As shown in Fig. 1, the device for extracting root canal screws for minimally invasive tooth extraction includes a bracket 1 and a screw rod 2, and the bracket 1 is provided with screw holes 4. The screw rod 2 runs through the screw hole 4; the lower end of the screw rod 2 on the opening side of the bracket 1 is provided with a pull hook 6; as shown in Figure 2, the bracket 1 includes a first support rod 11 and The second support rod 12, one end of the first support rod 11 and the second support rod 12 is connected by a cross bar 5; as shown in Figure 3 and Figure 4, the end of the screw rod 2 is provided with an annular groove 7. The drag hook 6 includes a hook tail 61, a hook body 62 and a hook tip 63. The hook tail 61 is set as a collar matching the annular groove 7, and the hook tail 61 is embedded in the annular recess provided at the end of the screw rod 2. In the groove 7, by embedding the hook tail 61 of the drag hook 6 in the annular groove 7, the drag hook 6 is prevented from breaking away from the screw rod 2, the tightness of the connection between the drag hook 6 and the screw rod 2 is increased, and the whole structure of the hook tail 61 is set as The collar, the collar is embedded in the annular groove 7, can realize the tight connection between the drag hook 6 and the screw rod 2 more conveniently.

The root canal screw that is compatible with the device for removing the root canal screw provided in this embodiment is a helical root canal screw with a small hole on the top. In the present invention, the number of small holes can be multiple or only one, as long as It only needs to be able to tightly connect the retractor with the root canal nail.

Example 2

Fig. 5 is a schematic diagram of another device for extracting root canal screws provided in this embodiment. As shown in Fig. 5, the device for extracting root canal screws for minimally invasive tooth extraction includes a bracket 1 and a screw rod 2, and the bracket 1 is provided with a screw hole 4, and the screw rod 2 passes through the screw hole 4; the lower end of the screw rod 2 on the opening side of the support 1 is provided with a pull hook 6; as shown in Figure 2, the support 1 includes The first support rod 11 and the second support rod 12, one end of the first support rod 11 and the second support rod 12 are connected by a cross bar 5; as shown in Fig. 3 and Fig. 4, the screw rod 2 The end is provided with an annular groove 7; the drag hook 6 includes a hook tail 61, a hook body 62 and a hook point 63, the hook tail 61 is set as a collar matching the annular groove 7, and the hook tail 61 is embedded in the screw rod 2 In the annular groove 7 provided at the end, by inserting the hook tail 61 of the drag hook 6 into the annular groove 7, the drag hook 6 is prevented from detaching from the screw rod 2, and the tightness of the connection between the drag hook 6 and the screw rod 2 is increased, and the hook The whole structure of the tail 61 is set as a collar, and the collar is embedded in the annular groove 7, which can more conveniently realize the tight connection between the drag hook 6 and the screw rod 2; in this embodiment, the opening with the bracket 1 The screw rod 2 on the opposite side is provided with a rotary head 9, and the screw connection between the rotary head 9 and the screw rod 2 is convenient for the replacement of the rotary head.

In this embodiment, the rotating head 9 is also provided with a handle bar 13. When the screw rod 2 is unscrewed upwards, the handle bar 13 can be conveniently used by medical personnel with little strength, especially female doctors, and the handle The rod 13 can avoid the pain caused by directly operating the rotating head 9 with fingers.

The root canal screw that is compatible with the device for removing the root canal screw provided in this embodiment is a helical root canal screw with a small hole on the top. In the present invention, the number of small holes can be multiple or only one, as long as It only needs to be able to tightly connect the retractor with the root canal nail.

Example 3

Figure 6 is a schematic diagram of another device for extracting root canal screws provided in this embodiment, as shown in Figure 6, the device for extracting root canal screws for minimally invasive tooth extraction includes a bracket 1 and a screw rod 2, the The support 1 is provided with a screw hole 4, and the screw rod 2 runs through the screw hole 4; the lower end of the screw rod 2 on the opening side of the support 1 is provided with a pull hook 6; as shown in Figure 2, the support 1 Including a first support rod 11 and a second support rod 12, one end of the first support rod 11 and the second support rod 12 is connected by a cross bar 5; as shown in Fig. 3 and Fig. 4, the screw rod 2 The end is provided with an annular groove 7; the pull hook 6 includes a hook tail 61, a hook body 62 and a hook point 63, the hook tail 61 is set as a collar matching the annular groove 7, and the hook tail 61 is embedded in the spiral In the annular groove 7 provided at the end of the rod 2, by embedding the hook tail 61 of the drag hook 6 in the annular groove 7, the drag hook 6 is prevented from breaking away from the screw rod 2, and the tightness of the connection between the drag hook 6 and the screw rod 2 is increased. The entire structure of the hook tail 61 is set as a collar, and the collar is embedded in the annular groove 7, which can more conveniently realize the tight connection between the drag hook 6 and the screw rod 2; The screw rod 2 on the opposite side of the opening direction is provided with a rotary head 9, and the screw connection between the rotary head 9 and the screw rod 2 is convenient for the replacement of the rotary head.

In this embodiment, the rotating head 9 is also provided with a handle bar 13. When the screw rod 2 is unscrewed upwards, the handle bar 13 can be conveniently used by medical personnel with little strength, especially female doctors, and the handle The rod 13 can avoid the pain caused by directly operating the rotating head 9 with fingers.

Figure 7 is a schematic diagram of the bracket 1 of this embodiment, as shown in Figure 7, the end of the bracket 1 is provided with a clamping portion 14, the clamping portion 14 includes a first clamping portion 141 and a second clamping portion 142, the first clamping portion 141 and the second clamping portion 142 are disposed opposite to each other. In this embodiment, the distance between the first clamping portion 141 and the second clamping portion 142 is the thickness of one tooth; during tooth extraction, the first clamping portion 141 and the second clamping portion 142 clamp Hold the adjacent tooth to be extracted, so as to avoid possible damage to the adjacent tooth during tooth extraction; the clamping part 14 in this embodiment is an oval piece made of soft elastic material such as rubber material Shape, the use of elastic materials can improve the patient's comfort during tooth extraction.

When the device for extracting the root canal screw of the present embodiment is implemented in the process of minimally invasive tooth extraction, the specific usage method is as follows:

First, the wedge force and rotation force generated by the existing minimally invasive tooth extraction knife are used to cut off the periodontal ligament and simultaneously squeeze the alveolar bone to increase the gap, and then drive the root canal screw with a central hole into the root canal of the residual root , and pass the hook connected on the screw rod through the center hole of the root canal nail, and then continuously rotate the screw rod on the bracket upward to increase the distance between the screw rod and the root canal nail, and the pulling force generated by this distance Pull the hook to pull out the residual root.

The root canal screw that is compatible with the device for removing the root canal screw provided in this embodiment is a helical root canal screw with a small hole on the top. In the present invention, the number of small holes can be multiple or only one, as long as It only needs to be able to tightly connect the retractor with the root canal nail.

Example 4

Fig. 8 is a schematic diagram of another device for extracting root canal screws provided in this embodiment. As shown in Fig. 8, the device for extracting root canal screws for minimally invasive tooth extraction includes a bracket 1 and a screw rod 2, and the bracket 1 is provided with a screw hole 4, and the screw rod 2 runs through the screw hole 4; the lower end of the screw rod 2 on the opening side of the support 1 is provided with a clamping mechanism 8; as shown in Figure 2, the support 1 includes a first support rod 11 and a second support rod 12, one end of the first support rod 11 and the second support rod 12 are connected by a cross bar 5.

Fig. 9 is a schematic diagram of the clamping mechanism 8 in this embodiment. As shown in Fig. 9, the clamping mechanism 8 includes an active rod 81, and a clamping base 82 is fixed on the active rod 81, and the clamping base 82 is provided with a clamping arm 83, and the clamping arm 83 is composed of a first clamping arm 831 and a second clamping arm 832. The arm 832 clamps the root canal nail to realize the tight connection between the clamping mechanism 8 and the root canal screw; root canal nails for any modification.

As shown in Figure 8, the bottom of the bracket 1 is provided with a recess 10. The present invention provides a recess 10 at the bottom of the bracket 10. During the root canal screw removal process, the recess 10 at the bottom of the bracket 1 can just touch two adjacent On the one hand, this provides a force application point for extracting the root canal screw, on the other hand, it increases the stability of the entire tooth extraction device and prevents the support 1 from sliding.

The top of the screw rod 2 is provided with a rotating head 9, the rotating head 9 is provided with a handle bar 13, and the rotating head 9 and the screw rod 2 are connected by a screw, which facilitates the replacement of the rotating head 9. In this embodiment, when screwing out the screw rod 2 upwards, setting the handle bar 13 can facilitate the use of medical personnel with little strength, especially female doctors, and using the handle bar 13 can avoid direct manipulation of the rotating head 9 by fingers. feeling of pain.

Claims (10)

1. the device pulling out canal pin, it is characterised in that described in pull out canal pin device and include support (1) and screw mechanism (2), described support (1) is provided with screw (4), described screw mechanism (2) runs through described screw (4); Described screw mechanism (2) lower end is provided with canal pin bindiny mechanism (3).

2. pull out the device of canal pin according to claim 1, it is characterized in that, described support (1) is included one end of the first support bar (11) and the second support bar (12), described first support bar (11) and described second support bar (12) and is connected by cross bar (5).

3. pull out the device of canal pin according to claim 1, it is characterised in that described canal pin bindiny mechanism (3) is drag hook (6).

4. pull out the device of canal pin according to claim 3, it is characterised in that described screw mechanism (2) end is provided with annular groove (7); Described drag hook (6) includes hook tail (61), coupler body (62) and bill (63), and described hook tail (61) embeds in the annular groove (7) that screw mechanism (2) end is arranged.

5. pull out the device of canal pin according to claim 1, it is characterised in that described screw mechanism (2) is screw rod.

6. pull out the device of canal pin according to claim 1, it is characterised in that described canal pin bindiny mechanism (3) is clamping device (8).

7. pull out the device of canal pin according to claim 6, it is characterized in that, described clamping device (8) includes driving lever (81), described driving lever (81) is fixed with Holding seat (82), described Holding seat (82) is provided with clamping limb (83).

8. pull out the device of canal pin according to claim 1, it is characterised in that with the screw mechanism (2) of described support (1) opening direction opposite side is provided with swivel head (9).

9. pull out the device of canal pin according to claim 1, it is characterised in that the bottom of described support (1) is provided with recess (10).

10. pull out the device of canal pin according to claim 1, it is characterised in that the end of described support (1) is provided with clamping part (14).