Specialized instrument for probing the pulp chamber of teeth

Abstract

The present invention provides a special exploration device for tooth pulp cavity, comprising a handheld part, a positioning bolt, a positioning nut and an exploration component, wherein the exploration component is arranged at the end of the handheld part, the exploration component comprises a pulp cavity probe and a steering plate, the steering plate is arranged at the end of the pulp cavity probe, the steering plate is provided with a steering hole, the diameter of the pulp cavity probe decreases from the proximal handheld end to the distal handheld end, the handheld part comprises a handle, a left plate and a right plate, the left plate and the right plate are respectively arranged at the end of the handle, the left plate and the right plate are arranged in parallel, and the left plate, the right plate and the handle jointly form a steering groove, the left plate is provided with a left through hole, the right plate is provided with a right through hole, the positioning bolt passes through the left through hole, the steering hole and the right through hole in sequence and is fixed by the positioning nut; the special exploration device for tooth pulp cavity has a reasonable structural design, can realize convenient exploration of the tooth pulp cavity, is easy to operate, and thus provides a guarantee for the high accuracy of the pulp cavity.

Description

Technical Field

[0001] The invention relates to a special exploration device for a tooth pulp cavity. Background Art

[0002] During root canal treatments, it may be necessary to perform pulp cavity opening on the dental crown. During the pulp cavity opening process, the depth and direction of the pulp cavity opening should be accurate to achieve the purpose of subsequent treatment after the pulp cavity opening. When performing pulp cavity opening, if the direction is inaccurate, lateral penetration will occur; if the depth is too great, bottom penetration will occur, and biocement will be required for repair, which is time-consuming and increases the pain of the patient. Therefore, when performing pulp cavity opening on the dental crown, if the depth or direction of the pulp cavity opening deviates, it should be discovered and avoided as soon as possible.

[0003] However, there is currently no clinical device for exploring the depth or direction of the medullary cavity opening. The only way to make a judgment is to rely on the doctor's operating experience. For doctors who have just learned about medullary cavity opening or lack experience, it is very easy to make inaccurate judgments, resulting in bottom penetration or side penetration.

[0004] The above problems are those that should be considered and solved during the process of opening the dental pulp cavity. Summary of the invention

[0005] The purpose of the present invention is to provide a special exploration device for a tooth pulp cavity to solve the problem that there is a gap in the existing technology for exploring the depth and direction of the tooth pulp cavity, which makes it difficult to achieve the exploration of the ideal depth and direction of the pulp cavity, resulting in inaccurate judgment of the depth and direction of the pulp cavity, and further leads to the problem of bottom penetration or side penetration.

[0006] The technical solution of the present invention is:

[0007] A special exploration device for dental pulp cavity opening comprises a handheld part, a positioning bolt, a positioning nut and an exploration assembly, wherein the exploration assembly is arranged at the end of the handheld part, the exploration assembly comprises a pulp cavity probe and a steering plate, the steering plate is arranged at the end of the pulp cavity probe, the steering plate is provided with a steering hole, the diameter of the pulp cavity probe decreases from the proximal handheld end to the distal handheld end, the handheld part comprises a handle, a left plate and a right plate, the left plate and the right plate are respectively arranged at the ends of the handle, the left plate and the right plate are arranged in parallel, and the left plate, the right plate and the handle jointly form a steering groove, the left plate is provided with a left through hole, the right plate is provided with a right through hole, the positioning bolt passes through the left through hole, the steering hole and the right through hole in sequence and is fixed by the positioning nut.

[0008] Furthermore, the medullary cavity probe includes a probe head, a probe middle and a probe tail which are arranged in sequence, the probe head, the probe middle and the probe tail are connected in sequence, and the end of the probe tail is connected to a steering plate, the probe head is provided with a lower limit marking coating, and the probe middle is provided with an upper limit marking coating.

[0009] Furthermore, the length of the probe head is 4 mm, the length of the middle part of the probe is 5 mm, the lower limit marking coating is a red lower limit marking coating, and the upper limit marking coating is a blue upper limit marking coating.

[0010] Furthermore, a thread groove is provided at the end of the intramedullary probe, and a thread column adapted to the thread groove is provided on the steering plate, and the intramedullary probe is connected to the steering plate via the thread groove and the thread column.

[0011] Furthermore, the width of the steering groove is greater than the width of the intramedullary probe, and the length of the steering groove is greater than the length of the intramedullary probe.

[0012] Furthermore, the hand-held part, the positioning bolt, the positioning nut and the exploration component are all made of medical stainless steel.

[0013] Furthermore, the exploration component also includes an indicator sheet and a positioning sponge. The indicator sheet is a square sheet with a round hole in the middle. The positioning sponge is bonded to the round hole of the indicator sheet. The positioning sponge has a card hole in the middle for the medullary cavity probe to pass through.

[0014] Furthermore, the indicator sheet is made of heat-activated nickel titanium, and the positioning sponge is made of polyurethane sponge.

[0015] The beneficial effects of the present invention are as follows: the tooth pulp cavity exploration device, by setting up an exploration component, realizes the exploration of the pulp cavity on the tooth by the pulp cavity probe, realizes the steering adjustment of the pulp cavity probe by the steering plate, and realizes the positioning of the steering plate by the positioning bolt and the positioning nut, thereby realizing the fixation of the inclination angle of the pulp cavity probe and the handheld part, which is convenient for the subsequent operation of the probe component by the handheld part to probe into the pulp cavity for depth and direction exploration, and effectively avoids the problem of bottom penetration or side penetration during the pulp cavity opening process. The tooth pulp cavity exploration device has a reasonable structural design, can realize convenient exploration of the tooth pulp cavity, is easy to operate, and thus provides a guarantee for the high accuracy of the pulp cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a schematic diagram of the structure of a tooth pulp cavity exploration device according to an embodiment of the present invention;

[0017] Figure 2 is a schematic cross-sectional structure diagram of the embodiment in which the probe assembly is accommodated in the steering groove;

[0018] Figure 3 is a schematic diagram of the structure of the detection component in the embodiment;

[0019] Figure 4 Schematic diagram of the structure of the indicator sheet and the positioning sponge in the embodiment;

[0020] Figure 5is a schematic diagram of the structure of the detection component provided with an indicator sheet and a positioning sponge in the embodiment;

[0021] Figure 6 is a schematic diagram illustrating a specific example of deformation of the indicator sheet after detection in the embodiment;

[0022] Wherein: 1-handle part, 2-positioning bolt, 3-positioning nut, 4-probing assembly, 5-thread groove, 6-thread column, 7-upper limit marking coating, 8-lower limit marking coating;

[0023] 11-handle, 12-left panel, 13-right panel, 14-steering slot;

[0024] 41 - medullary cavity probe, 42 - steering plate, 43 - indicator sheet, 44 - round hole, 45 - positioning sponge, 46 - card hole;

[0025] 411 - probe head, 412 - probe middle, 413 - probe tail. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example

[0027] A special exploration device for dental pulp cavity, such as Figure 1 , comprising a handheld portion 1, a positioning bolt 2, a positioning nut 3 and a detection assembly 4, wherein the detection assembly 4 is disposed at the end of the handheld portion 1, as shown Figure 3 The exploration assembly 4 includes a medullary cavity probe 41 and a steering plate 42. The steering plate 42 is arranged at the end of the medullary cavity probe 41. The steering plate 42 is provided with a steering hole. The diameter of the medullary cavity probe 41 decreases from the proximal hand-held portion 1 end to the distal hand-held portion 1 end. The hand-held portion 1 includes a handle 11, a left plate 12 and a right plate 13. The left plate 12 and the right plate 13 are respectively arranged at the ends of the handle 11. The left plate 12 and the right plate 13 are arranged in parallel, and the left plate 12, the right plate 13 and the handle 11 jointly form a steering groove 14. The left plate 12 is provided with a left through hole, and the right plate 13 is provided with a right through hole. The positioning bolt 2 passes through the left through hole, the steering hole and the right through hole in sequence and is fixed by the positioning nut 3.

[0028] This kind of tooth pulp cavity special exploration device, by setting up the exploration component 4, realizes the exploration of the pulp cavity on the tooth by the pulp cavity probe 41, realizes the steering adjustment of the pulp cavity probe 41 by the steering plate 42, and realizes the positioning of the steering plate 42 by the positioning bolt 2 and the positioning nut 3, thereby realizing the fixing of the inclination angle of the pulp cavity probe 41 and the handheld part 1, which is convenient for the subsequent operation of the probe component through the handheld part 1 to probe into the pulp cavity for depth and direction exploration, and effectively avoids the problem of bottom penetration or side penetration during the pulp cavity opening process. This kind of tooth pulp cavity special exploration device has a reasonable structural design, can realize convenient exploration of the tooth pulp cavity, is easy to operate, and thus provides a guarantee for the high accuracy of the pulp cavity opening.

[0029] The use process of this special exploration device for tooth pulp cavity opening is as follows: the positioning bolt 2 is passed through the left through hole, the turning hole and the right through hole in sequence, and the positioning nut 3 is installed on the positioning bolt 2; the angle between the pulp cavity probe 41 and the hand-held part 1 is adjusted by rotating the pulp cavity probe 41; after confirmation, the positioning nut 3 on the positioning bolt 2 is tightened to fix the pulp cavity probe 41 and the hand-held part 1; the pulp cavity probe 41 is placed into the pulp cavity opened on the tooth crown by holding the hand-held part 1 to explore the depth and direction; specifically, the pulp cavity depth is explored by the depth of the pulp cavity probe 41 entering the pulp cavity; and whether the pulp opening direction is offset is judged by the change in the angle of the hand-held part 1 when the pulp cavity probe 41 enters the pulp cavity.

[0030] In the tooth pulp cavity special exploration device, Figure 3 The medullary cavity probe 41 includes a probe head 411, a probe middle part 412 and a probe tail 413 which are sequentially arranged. The probe head 411, the probe middle part 412 and the probe tail 413 are sequentially connected and arranged, and the end of the probe tail 413 is connected to the steering plate 42. The probe head 411 is provided with a lower limit marking coating 8, and the probe middle part 412 is provided with an upper limit marking coating 7. By providing the lower limit marking coating 8, the lower limit of the medullary cavity depth is marked, and by providing the upper limit marking coating 7, the upper limit of the medullary cavity depth is marked, so that the lower limit and the upper limit of the medullary cavity depth can be observed intuitively, the judgment time is shortened, and the detection accuracy is improved.

[0031] In this special exploration device for dental pulp cavity opening, the length of the probe head 411 is 4 mm, the length of the probe middle part 412 is 5 mm, the lower limit marking coating 8 adopts a red lower limit marking coating 8, and the upper limit marking coating 7 adopts a blue upper limit marking coating 7. By setting the red lower limit marking coating 8, it is convenient to visually observe whether the depth of the pulp cavity has reached the lower limit of the depth. When the depth of the pulp cavity does not exceed the red lower limit marking coating 8, that is, the depth of the pulp cavity is less than the lower limit of the depth, it can be directly judged that the depth of the pulp cavity does not meet the standard and it is necessary to continue to open the pulp cavity. By setting the blue upper limit marking coating 7, it is convenient to visually observe whether the depth of the pulp cavity has reached the upper limit of the depth. When the depth of the pulp cavity does not exceed the blue upper limit marking coating 7, that is, the depth of the pulp cavity exceeds the upper limit of the depth, when performing the pulp cavity opening operation, the depth of the pulp cavity should be avoided from exceeding the upper limit of the depth to avoid the problem of bottom penetration or side penetration.

[0032] In this special exploration device for dental pulp cavity, a thread groove 5 is provided at the end of a pulp cavity probe 41, a thread column 6 adapted to the thread groove 5 is provided on a steering plate 42, and the pulp cavity probe 41 is connected to the steering plate 42 via the thread groove 5 and the thread column 6. By providing the thread groove 5 and the thread column 6, it is convenient to replace the pulp cavity probe 41. When the pulp cavity probe 41 is bent or damaged, it can be replaced quickly and conveniently. Only replacing the probe can avoid a substantial increase in the cost of use, thereby ensuring that the cost of use is relatively low. It is also possible to replace pulp cavity probes 41 of different sizes.

[0033] In the tooth pulp cavity special exploration device, Figure 2 The width of the steering groove 14 is greater than the width of the medullary cavity probe 41, and the length of the steering groove 14 is greater than the length of the medullary cavity probe 41, so that the medullary cavity probe 41 can be rotated at the steering groove 14 to achieve a 360° rotation of the medullary cavity probe 41. When not in use, the medullary cavity probe 41 can be placed at the steering groove 14 to avoid external forces causing damage, deformation and other adverse effects on the medullary cavity probe 41. The handheld part 1, the positioning bolt 2, the positioning nut 3 and the exploration component 4 are all made of medical stainless steel to ensure durability and safety, and are easy to sterilize at high temperature and high pressure to achieve the purpose of reusability, reduce the cost of use, reduce medical waste and protect the environment.

[0034] This kind of tooth pulp cavity special exploration device, such as Figure 4 and Figure 5The exploration assembly also includes an indicator sheet 43 and a positioning sponge 45. The indicator sheet 43 is a square sheet, a circular hole 44 is provided in the middle of the indicator sheet 43, the positioning sponge 45 is bonded to the circular hole 44 of the indicator sheet 43, and a clamping hole 46 for the medullary cavity probe to pass through is provided in the middle of the positioning sponge 45. The indicator sheet 43 is made of heat-activated nickel titanium, which is easy to deform and does not rebound. The positioning sponge 45 is made of polyurethane sponge, which is elastic and easy to position. The clamping hole 46 is preferably interference fit with the medullary cavity probe 41. By setting the indicator sheet 43 and the positioning sponge 45, a more intuitive detection of the contralateral penetration can be achieved. Specifically, the medullary cavity probe 41 is passed through the card hole 46 of the positioning sponge 45, and the indicator sheet 43 is connected to the medullary cavity probe 41 through the positioning sponge 45. The indicator sheet 43 is preferably arranged perpendicular to the medullary cavity probe 41 and arranged on the upper limit marking coating 7. The thickness of the indicator sheet 43 is preferably 0.8-1.5mm, the length is preferably 4mm-10mm, and the width is preferably 4mm-10mm. When the medullary cavity probe 41 is used for medullary exploration, when the medullary opening direction is normal and no lateral deviation occurs, the indicator sheet 43 does not change; Figure 6 When the pulp opening direction is lateralized, the indicator sheet 43 may be deformed due to the effect of the gums, such as Figure 6 As shown in the direction of the solid arrow, after the medullary cavity is explored, one side of the indicator sheet 43 is bent away from the tip of the medullary cavity probe, and the deviation of the medullary opening direction is confirmed according to the position of the deformation, as shown in FIG. Figure 6 As shown in the direction of the dotted arrow, it can be determined that the opened medullary cavity is offset in the direction opposite to the curved side of the indicator sheet 43. Intuitive, simple and clear exploration can be achieved. The indicator sheet 43 and the positioning sponge 45 can be replaced, and the medullary cavity probe 41 can be reused after disinfection, thereby avoiding the problem of excessive medical waste.

Claims

1. A tooth pulp cavity exploration device, characterized in that: The invention comprises a hand-held part, a positioning bolt, a positioning nut and an exploration component, wherein the exploration component is arranged at the end of the hand-held part, the exploration component comprises a medullary cavity probe and a steering plate, the steering plate is arranged at the end of the medullary cavity probe, the steering plate is provided with a steering hole, the diameter of the medullary cavity probe decreases from the proximal hand-held end to the distal hand-held end, the hand-held part comprises a handle, a left plate and a right plate, the left plate and the right plate are respectively arranged at the ends of the handle, the left plate and the right plate are arranged in parallel, and the left plate, the right plate and the handle jointly form a steering groove, the left plate is provided with a left through hole, the right plate is provided with a right through hole, the positioning bolt passes through the left through hole, the steering hole and the right through hole in sequence and is fixed by the positioning nut; the medullary cavity probe comprises a sequentially arranged The probe head, the middle part of the probe and the tail part of the probe are connected in sequence, and the end of the probe tail is connected to the steering plate. The probe head is provided with a lower limit marking coating, and the middle part of the probe is provided with an upper limit marking coating; the length of the probe head is 4mm, the length of the middle part of the probe is 5mm, the lower limit marking coating adopts a red lower limit marking coating, and the upper limit marking coating adopts a blue upper limit marking coating; the end of the medullary cavity probe is provided with a thread groove, and the steering plate is provided with a thread column adapted to the thread groove, and the medullary cavity probe is connected to the steering plate through the thread groove and the thread column; the width of the steering groove is greater than the width of the medullary cavity probe, and the length of the steering groove is greater than the length of the medullary cavity probe.

2. The tooth pulp cavity exploration device according to claim 1, characterized in that: The handpiece, set bolt, set nut and probe assembly are made of medical grade stainless steel.

3. The tooth pulp cavity exploration device according to claim 1, characterized in that: The exploration component also includes an indicator sheet and a positioning sponge. The indicator sheet is a square sheet with a round hole in the middle. The positioning sponge is bonded to the round hole of the indicator sheet. The middle of the positioning sponge is provided with a card hole for the medullary cavity probe to pass through.

4. The tooth pulp cavity exploration device according to claim 3, characterized in that: The indicator piece is made of heat-activated nickel titanium and the positioning sponge is made of polyurethane sponge.

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