CN212165941U

CN212165941U - Periodontal pocket depth measuring device suitable for orthodontic patient

Info

Publication number: CN212165941U
Application number: CN202020447792.8U
Authority: CN
Inventors: 陈焕; 周玥颖; 陈思佳
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-18
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a periodontal pocket depth measuring device suitable for orthodontic patient, thin needle pole portion includes first thin needle pole section, second thin needle pole section and third thin needle pole section that set gradually from top to bottom, the upper end and the thick needle pole portion fixed connection of first thin needle pole section, first thin needle pole section and thick needle pole portion coaxial arrangement, the probe is movably covered in the probe sleeve through first thin needle pole section, the both ends of second thin needle pole section are connected with the lower extreme of first thin needle pole section and the upper end bending connection of third thin needle pole section respectively, first thin needle pole section and third thin needle pole section are parallel to each other and the interval sets up, first thin needle pole section is located between third thin needle pole section and the pull wire, the front side of first thin needle pole section and the upside of second thin needle pole section form the dodge region that is used for dodging the support groove, therefore the periodontal pocket depth measuring device of the utility model can avoid the support groove when in use, the periodontal attachment loss is measured vertically, and the method is suitable for monitoring the periodontal condition of orthodontic patients with labial brackets.

Description

Periodontal pocket depth measuring device suitable for orthodontic patient

Technical Field

The utility model relates to the technical field of medical equipment, a dental equipment is related to, especially relate to a periodontal pocket depth measuring device suitable for just abnormal patient.

Background

Periodontal pockets are pathologically deepened gingival sulcus, one of the most important clinical manifestations of periodontitis. The depth of the periodontal pocket is an important criterion for determining whether the gingiva is healthy, and therefore, the periodontal pocket depth measurement is an essential step in the treatment of gingiva.

Although periodontal condition of orthodontic patients is evaluated before orthodontics, patients with periodontitis must be in a resting stage to begin orthodontics. However, because the orthodontic force can affect the orthodontic effect, excessive force can not only slow down tooth movement, but also destroy periodontal tissues, and the change of periodontal conditions can guide the orthodontic force, periodontal monitoring during orthodontic treatment is necessary, and the orthodontic treatment effect is very important, especially for patients with periodontitis.

Periodontal probing is the most important examination method in the diagnosis of periodontal disease. Periodontal depth and periodontal attachment level are two important indicators, the former is the distance from the gingival margin to the pocket bottom and does not reflect the actual loss of periodontal support tissue; the latter refers to the distance from the base of the gingival sulcus or periodontal pocket to the cementum interface, and more clinically, the level of periodontal attachment reflects the loss of periodontal attachment.

However, conventional probes do not accurately identify the cementum junction in many cases, such as gingival hyperplasia, and do not reflect the actual loss of periodontal support. In addition, the clinical periodontal probe comprises a common probe and a digital probe, for example, the invention patent application with the application number of 201910894188.1 discloses a digital periodontal pocket depth measuring device, which comprises a shell, a probe needle, a pull wire, a movable loop bar, a spring and a displacement sensor; the front end of the shell is provided with a probe sleeve, and the probe is movably sleeved in the probe sleeve; one end of the traction wire is fixedly arranged on the probe needle, the other end of the traction wire is fixedly arranged at the front end of the movable sleeve rod, and the traction wire is in a tight state; the rear end of the movable loop bar is provided with a convex ring; the spring is sleeved on the movable loop bar, one end of the spring is abutted to the inside of the shell, and the other end of the spring is abutted to the raised ring at the rear end of the movable loop bar; when the detection needle is abutted against the bottom of the periodontal pocket and then continuously receives a downward force, the detection needle applies a traction force to the traction wire, the detection needle moves upwards along the probe sleeve, the traction wire drives the movable loop bar to compress the spring, and the movable loop bar moves forwards; when the detection needle leaves the bottom of the periodontal pocket, the detection needle stops applying traction force to the traction line, the elastic force of the spring drives the movable sleeve rod to move backwards, and the detection needle moves downwards along the probe sleeve; the displacement sensor is arranged on the movable sleeve rod and used for measuring the depth of the periodontal pocket by measuring the displacement of the movable sleeve rod.

The digital periodontal pocket depth measuring device provided by the invention patent application with the application number of 201910894188.1 converts the depth of the periodontal pocket into the displacement of the movable sleeve rod through the cooperation of the probe, the pull wire, the movable sleeve rod and the spring, and can obtain the measurement data of the periodontal pocket depth by measuring the displacement of the movable sleeve rod through the displacement sensor, thereby not only realizing the periodontal pocket depth measuring function, but also directly recording the measured data and obtaining the electronic measurement data. However, as the probe is of a straight line structure with a pen, for orthodontic patients, orthodontic brackets are fixed on the surfaces of teeth, and the vertical periodontal depth cannot be measured due to the blocking of the brackets; if the bracket is avoided, the probe is not parallel to the long axis of the tooth easily, the measured result is not the vertical distance, certain error exists, the wrong result can give wrong indication to a clinician, and adverse effect is brought to orthodontic treatment.

Therefore, it is a realistic meaning for those skilled in the art how to develop a periodontal pocket depth measuring device suitable for orthodontic patients that improves at least one of the above technical problems.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a periodontal pocket depth measuring device suitable for just abnormal patient to improve at least one technical problem that prior art exists.

The utility model provides an above-mentioned technical problem's technical scheme as follows: comprises a shell, a probe needle, a traction wire, a movable loop bar, a spring and a displacement sensor; the front end of the shell is provided with a probe sleeve, and the probe is movably sleeved in the probe sleeve; one end of the traction wire is fixedly arranged on the probe needle, the other end of the traction wire is fixedly arranged at the front end of the movable sleeve rod, and the traction wire is in a tight state; the rear end of the movable sleeve rod is provided with a convex ring; the spring is sleeved on the movable loop bar, one end of the spring is abutted to the inside of the shell, and the other end of the spring is abutted to the raised ring at the rear end of the movable loop bar; when the detection needle is abutted against the bottom of the periodontal pocket and then continuously receives a downward force, the detection needle can apply a traction force to the traction wire, the detection needle moves upwards along the probe sleeve, the traction wire drives the movable loop bar to compress the spring, and the movable loop bar moves forwards; when the probe needle leaves the bottom of the periodontal pocket, the probe needle stops applying traction force to the traction wire, the elastic force of the spring drives the movable sleeve rod to move backwards, and the probe needle moves downwards along the probe sleeve; the displacement sensor is arranged on the movable sleeve rod and used for measuring the depth of the periodontal pocket by measuring the displacement of the movable sleeve rod, the probe comprises a needle rod part and a circular ring part, the circular ring part is fixedly arranged at the upper end of the needle rod part, the needle rod part is movably sleeved in the probe sleeve, the needle rod part comprises a fine needle rod part and a thick needle rod part, the thick needle rod part is arranged at the upper end of the fine needle rod part, and the circular ring part is arranged at the upper end of the thick needle rod part; the probe needle passes through thin needle pole portion movably overlaps locate in the probe sleeve, the telescopic internal diameter of probe is greater than the external diameter of thin needle pole portion, the telescopic internal diameter of probe is less than the external diameter of thick needle pole portion, thin needle pole portion with form spacing step, its characterized in that between the thick needle pole portion: the thin needle rod part comprises a first thin needle rod section, a second thin needle rod section and a third thin needle rod section which are arranged from top to bottom in sequence, the upper end of the first thin needle bar section is fixedly connected with the thick needle bar section, the first thin needle bar section and the thick needle bar section are coaxially arranged, the probe is movably sleeved in the probe sleeve through the first thin needle rod section, two ends of the second thin needle rod section are respectively connected with the lower end of the first thin needle rod section and the upper end of the third thin needle rod section in a bending way, the first fine needle rod section and the third fine needle rod section are parallel to each other and arranged at intervals, the third fine needle rod section is positioned at the front side of the first fine needle rod section, the first thin needle rod section is located between the third thin needle rod section and the traction line, and an avoidance area for avoiding the bracket is formed on the front side of the first thin needle rod section and the upper side of the second thin needle rod section.

As an improvement of the above aspect, an included angle between each of two ends of the second fine needle rod section and a bending connection between the lower end of the first fine needle rod section and the upper end of the third fine needle rod section is 100 ° to 120 °.

As an improvement of the above aspect, an included angle between each of two ends of the second fine needle rod segment and a bending connection between the lower end of the first fine needle rod segment and the upper end of the third fine needle rod segment is 110 °.

As an improvement of the above aspect, an included angle between each of two ends of the second fine needle rod section and a bending connection between the lower end of the first fine needle rod section and the upper end of the third fine needle rod section is 109 °.

As an improvement of the above aspect, a blue LED lamp and an LED lamp control switch for controlling the blue LED lamp to be turned on and off with the power supply device are provided on the housing.

As an improvement of the above aspect, the LED lamp control switch is a push button switch.

As a modification of the above aspect, the blue LED lamp is located at a lower side of the front portion of the housing, and a light emitting direction of the blue LED lamp intersects with the needlepoint of the lower end of the thin needlepoint part.

As a modification of the above aspect, the LED lamp control switch is located on an upper side of a middle portion of the housing.

The utility model discloses following beneficial effect has: the utility model discloses a periodontal pocket depth measuring device suitable for orthodontic patient, thin needle pole portion includes first thin needle pole section, second thin needle pole section and third thin needle pole section that set gradually from top to bottom, the upper end of first thin needle pole section with thick needle pole portion fixed connection, first thin needle pole section with thick needle pole portion coaxial setting, the probe needle passes through first thin needle pole section movably cover is located in the probe sleeve, the both ends of second thin needle pole section respectively with the lower extreme of first thin needle pole section with the upper end buckling connection of third thin needle pole section, first thin needle pole section and third thin needle pole section are parallel to each other and the interval sets up, third thin needle pole section is located the front side of first thin needle pole section, first thin needle pole section is located between third thin needle pole section and the pull wire, the front side of first thin needle pole section and the upside of second thin needle pole section form the region that is used for dodging, therefore the utility model discloses a periodontal pocket depth measuring device can avoid the support groove when using, and the perpendicular measurement periodontal is attached and is lost, is applicable to the monitoring and has the orthodontic patient's of lip side support groove the periodontal condition.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a first embodiment of the periodontal pocket depth measurement device for orthodontic patients according to the present invention.

Fig. 2 is a schematic structural view of the periodontal pocket depth measuring device suitable for an orthodontic patient shown in fig. 1 in a use state.

Fig. 3 is a schematic structural view of a second embodiment of the periodontal pocket depth measurement device for orthodontic patients according to the present invention.

Fig. 4 is a schematic structural view of the periodontal pocket depth measuring device for an orthodontic patient shown in fig. 3 in a use state.

In the drawings, the components represented by the respective reference numerals are listed below:

1-housing 2-pull wire 3-probe sleeve

4-ring part 5-thick needle bar part 6-first thin needle bar section

7-second thin needle rod section 8-third thin needle rod section 9-bracket

10-blue LED lamp 11-LED lamp control switch 12-light emitting direction

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.

In the description of the present invention, it should be noted that, as the terms "front", "back", "upper", "lower", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that unless otherwise explicitly specified and limited, the specific meaning of the above terms in the present invention can be specifically understood by those of ordinary skill in the art.

As shown in fig. 1 to 4, the utility model provides a periodontal pocket depth measuring device suitable for orthodontic patients, which comprises a shell 1, a probe, a pull wire 2, a movable loop bar, a spring and a displacement sensor; the front end of the shell 1 is provided with a probe sleeve 3, and the probe is movably sleeved in the probe sleeve 3; one end of the pull wire 2 is fixedly arranged on the probe needle, the other end of the pull wire 2 is fixedly arranged at the front end of the movable sleeve rod, and the pull wire 2 is in a tight state; the rear end of the movable sleeve rod is provided with a convex ring; the spring is sleeved on the movable loop bar, one end of the spring is abutted to the inside of the shell 1, and the other end of the spring is abutted to a raised ring at the rear end of the movable loop bar; when the detection needle is abutted against the bottom of the periodontal pocket and then continuously receives a downward force, the detection needle can apply a traction force to the traction wire 2, the detection needle moves upwards along the probe sleeve 3, the traction wire 2 drives the movable loop bar to compress the spring, and the movable loop bar moves forwards; when the probe needle leaves the bottom of the periodontal pocket, the probe needle stops applying traction force to the traction wire 2, the elastic force of the spring drives the movable sleeve rod to move backwards, and the probe needle moves downwards along the probe sleeve 3; the displacement sensor is arranged on the movable sleeve rod and used for measuring the depth of the periodontal pocket by measuring the displacement of the movable sleeve rod, the probe comprises a needle rod part and a circular ring part 4, the circular ring part 4 is fixedly arranged at the upper end of the needle rod part, the needle rod part is movably sleeved in the probe sleeve 3 and comprises a fine needle rod part and a thick needle rod part 5, the thick needle rod part 5 is arranged at the upper end of the fine needle rod part, and the circular ring part 4 is arranged at the upper end of the thick needle rod part 5; the detection needle is movably sleeved in the probe sleeve 3 through the thin needle rod part, the inner diameter of the probe sleeve 3 is larger than the outer diameter of the thin needle rod part, the inner diameter of the probe sleeve 3 is smaller than the outer diameter of the thick needle rod part 5, a limiting step is formed between the thin needle rod part and the thick needle rod part 5, the thin needle rod part comprises a first thin needle rod part 6, a second thin needle rod part 7 and a third thin needle rod part 8 which are sequentially arranged from top to bottom, the upper end of the first thin needle rod part 6 is fixedly connected with the thick needle rod part 5, the first thin needle rod part 6 and the thick needle rod part 5 are coaxially arranged, the detection needle is movably sleeved in the probe sleeve 3 through the first thin needle rod part 6, the two ends of the second thin needle rod part 7 are respectively connected with the lower end of the first thin needle rod part 6 and the upper end of the third thin needle rod part 8 in a bending mode, first thin needle pole section 6 and the mutual parallel and interval setting of third thin needle pole section 8, the third thin needle pole section is located the front side of first thin needle pole section, first thin needle pole section 6 is located the third thin needle pole section 8 with between the pull wire 2, the front side of first thin needle pole section 6 with the upside of the thin needle pole section 7 of second forms the area of dodging that is used for dodging bracket 9.

It can be understood that the shell 1 is a main body structure of the periodontal pocket depth measuring device and mainly plays a role of supporting other components, and the detection needle, the pull wire 2, the movable loop bar, the spring, the displacement sensor and other components are directly or indirectly arranged on the shell 1; in addition, the shell 1 also plays a role of being convenient for holding by hands when being operated by a doctor. In order to supply power to the displacement sensor, the external power supply can be connected, a battery can be arranged on the shell 1, in addition, the shell 1 is also provided with a control device and a display device, the displacement sensor is connected with the control device, the control device is connected with the display device, the power supply device is connected with the display device, the control device is connected with the displacement sensor, the control device is used for processing detection data of the displacement sensor, the display device can be convenient for a doctor to directly read the depth of a periodontal pocket through a display screen after measurement, the reading is not needed through a PC (personal computer) end, and the operation is more convenient.

It can be understood that the present invention is an improved invention made in the invention patent application with application number 201910894188.1, and the technical solution of the invention patent application with application number 201910894188.1 can be referred to or even directly borrowed regardless of the undescribed structure or the described structure. The technical scheme of the utility model in, change the displacement volume of activity loop bar into the degree of depth of periodontal bag, the displacement volume through displacement sensor measurement activity loop bar can acquire the measuring data of periodontal bag depth, not only can realize periodontal bag depth measurement function, can also direct record measure the data that obtain and acquire electronic measurement data.

When not beginning to measure, the spring provides an expansion force for the activity loop bar has the trend of backward movement, and the activity loop bar can take up pull wire 2, makes pull wire 2 be in the state of straining, and pull wire 2 drives the probe needle and makes the probe needle insert in probe sleeve 3 downwards. To begin the measurement, the physician holds the housing 1 and extends the probe into the periodontal pocket and then slowly advances it towards the bottom of the pocket. When the probe needle is abutted against the bottom of the periodontal pocket, the probe needle, the pull wire 2, the movable loop bar, the spring and the like are all in an initial state. At this time, the doctor applies downward pressure to the probe needle, and since the lower end of the probe needle abuts against the bottom of the periodontal pocket, the probe needle is stationary relative to the oral cavity in the process, but the probe sleeve 3 gradually descends, which is equivalent to the probe needle moving upward along the direction of the probe sleeve 3; at the moment, the probe needle drives the movable loop bar to move by overcoming the elasticity of the spring through the traction rope, the spring is further compressed, and the movable loop bar moves forwards. When the probe sleeve 3 descends to a certain degree, the probe sleeve can be abutted against the gum, and at the moment, the length of the probe needle exposed out of the lower end of the probe sleeve 3 is the depth of the periodontal pocket; correspondingly, the rising height of the probe is the depth of the periodontal pocket; the probe needle drives the traction wire 2 and the movable sleeve rod to move in sequence, the displacement of the movable sleeve rod is the depth of the periodontal pocket, and the displacement of the movable sleeve rod is measured through the displacement sensor, so that the depth of the periodontal pocket can be measured. After the measurement is finished, the doctor slowly takes out the probe needle from the periodontal pocket, and because the abutting force between the bottom of the periodontal pocket and the probe needle is not existed any more, the spring which is further compressed before the probe needle is restored to the initial state, so that an expansion force is provided to drive the movable sleeve rod to move backwards; furthermore, the pull wire 2 drives the probe needle to be inserted into the probe sleeve 3 again. In the present invention, for convenience of description and understanding, it is defined herein that the direction of the probe needle is forward and the direction of the distal end of the housing 1 is backward.

The utility model is different from the prior structure in that the thin needle rod part comprises a first thin needle rod part 6, a second thin needle rod part 7 and a third thin needle rod part 8 which are sequentially arranged from top to bottom, the upper end of the first thin needle rod part 6 is fixedly connected with the thick needle rod part 5, the first thin needle rod part 6 and the thick needle rod part 5 are coaxially arranged, the probe needle is movably sleeved in the probe sleeve 3 through the first thin needle rod part 6, two ends of the second thin needle rod part 7 are respectively connected with the lower end of the first thin needle rod part 6 and the upper end of the third thin needle rod part 8 in a bending way, the first thin needle rod part 6 and the third thin needle rod part 8 are mutually parallel and arranged at intervals, the third thin needle rod part is arranged at the front side of the first thin needle rod part, the first thin needle rod part 6 is arranged between the third thin needle rod part 8 and the traction wire 2, first thin needle rod section 6 the front side with the upside of the thin needle rod section 7 of second forms the area of dodging that is used for dodging support groove 9, therefore the utility model discloses a periodontal pocket depth measuring device can avoid support groove 9 when using, the perpendicular measurement periodontal is attached and is lost, be applicable to the monitoring and have the orthodontic patient's of lip side support groove 9 periodontal condition, when probing lip side or buccal side central authorities, the probe syringe needle inserts the gum bag from nearly well or far-in side of tooth, the horizontal plane that makes the syringe needle is located support groove 9 below, move to tooth surface central authorities along the tooth surface, make the syringe needle exert oneself downwards, when the syringe needle point reachs the gum ditch bottom, receive the resistance and can not be downwards, probe minimum this moment is at the bottom of the gum ditch, because of the syringe needle can discern glaze sclerotin border, consequently, visit the distance and lose for the distance at the bottom of the gum ditch or at the bottom of the gum bag to sclerotin border, periodontal attachment promptly.

From the above, the periodontal pocket depth measuring device suitable for orthodontic patients of the present invention comprises a first thin needle rod section 6, a second thin needle rod section 7 and a third thin needle rod section 8 sequentially disposed from top to bottom, wherein the upper end of the first thin needle rod section 6 is fixedly connected to the thick needle rod section 5, the first thin needle rod section 6 is coaxially disposed with the thick needle rod section 5, the probe is movably sleeved in the probe sleeve 3 through the first thin needle rod section 6, two ends of the second thin needle rod section 7 are respectively connected to the lower end of the first thin needle rod section 6 and the upper end of the third thin needle rod section 8 by bending, the first thin needle rod section 6 and the third thin needle rod section 8 are parallel to each other and spaced, the third thin needle rod section is disposed at the front side of the first thin needle rod section, the first thin needle rod section 6 is disposed between the third thin needle rod section 8 and the pull wire 2, the front side of first thin needle pole section 6 with the upside of the thin needle pole section 7 of second forms the dodge region that is used for dodging bracket 9, therefore the utility model discloses a periodontal pocket depth measuring device can avoid bracket 9 when using, measures the periodontal attached loss perpendicularly, is applicable to the monitoring and has the orthodontic patient's of lip side bracket 9 periodontal condition.

Specifically, the included angle between the two ends of the second fine needle rod section 7 and the bending connection part of the lower end of the first fine needle rod section 6 and the upper end of the third fine needle rod section 8 is 100-120 degrees. Preferably, the included angle between the two ends of the second fine needle rod section 7 and the bending connection position of the lower end of the first fine needle rod section 6 and the upper end of the third fine needle rod section 8 is 110 degrees or 109 degrees.

In a preferred embodiment, a blue LED lamp 10 and an LED lamp control switch 11 for controlling the blue LED lamp 10 to be connected to or disconnected from the power supply are provided on the housing 1. The blue LED lamp 10 is a blue LED, has short light wave, can directly penetrate through crystalline lens to reach the bottom of retina, is harmless to human body, can observe obvious color development of dental plaque, and monitors periodontal maintenance condition of patients. In this embodiment, when dental plaque needs to be observed, the blue LED lamp 10 can be turned on by the LED lamp control switch 11, dental plaque can be observed when the dental plaque is used, and the blue LED lamp 10 can be turned off by the LED lamp control switch 11 when the dental plaque is not needed. Specifically, optionally, the LED lamp control switch 11 is a button switch. More preferably, the blue LED lamp 10 is located at a lower front side of the housing 1, and a light emitting direction 12 of the blue LED lamp 10 intersects with a needlepoint of a lower end of the thin needlepoint part. The LED lamp control switch 11 is positioned on the upper side of the middle part of the shell 1.

Specifically, optionally, a direction adjusting guide wheel is further arranged at the front end of the housing 1, and the traction wire 2 is wound on the direction adjusting guide wheel. The front end of the shell 1 is provided with a direction adjusting guide wheel, the traction wire 2 is wound on the direction adjusting guide wheel, and the friction force of the traction wire 2 at the bending transition angle can be reduced to the maximum extent through the direction adjusting guide wheel, so that the measurement precision is improved. The traction wire 2 is divided into an outer wire body and an inner wire body by taking a contact part with the direction adjusting guide wheel as a boundary. The external wire body and the external wire body are connected end to form a traction wire 2; one end of the external wire body is fixedly arranged on the circular ring part 4, and the external wire body is parallel to the detection needle (excluding the second thin needle rod section 7). One end of the internal line body is fixedly arranged at the front end of the movable sleeve rod, and the internal line body is parallel to the central axis of the movable sleeve rod.

In summary, the periodontal pocket depth measuring device suitable for orthodontic patients of the present invention comprises a first thin needle rod section 6, a second thin needle rod section 7 and a third thin needle rod section 8 sequentially disposed from top to bottom, wherein the upper end of the first thin needle rod section 6 is fixedly connected to the thick needle rod section 5, the first thin needle rod section 6 is coaxially disposed with the thick needle rod section 5, the probe is movably sleeved in the probe sleeve 3 through the first thin needle rod section 6, two ends of the second thin needle rod section 7 are respectively connected to the lower end of the first thin needle rod section 6 and the upper end of the third thin needle rod section 8 by bending, the first thin needle rod section 6 and the third thin needle rod section 8 are parallel to each other and spaced, the third thin needle rod section is disposed at the front side of the first thin needle rod section, the first thin needle rod section 6 is disposed between the third thin needle rod section 8 and the pull wire 2, the front side of first thin needle pole section 6 with the upside of the thin needle pole section 7 of second forms the dodge region that is used for dodging bracket 9, therefore the utility model discloses a periodontal pocket depth measuring device can avoid bracket 9 when using, measures the periodontal attached loss perpendicularly, is applicable to the monitoring and has the orthodontic patient's of lip side bracket 9 periodontal condition.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A periodontal pocket depth measuring device suitable for orthodontic patients comprises a shell (1), a probe, a pull wire (2), a movable loop bar, a spring and a displacement sensor; the front end of the shell (1) is provided with a probe sleeve (3), and the probe is movably sleeved in the probe sleeve (3); one end of the traction wire (2) is fixedly arranged on the probe needle, the other end of the traction wire (2) is fixedly arranged at the front end of the movable loop bar, and the traction wire (2) is in a tight state; the rear end of the movable sleeve rod is provided with a convex ring; the spring is sleeved on the movable loop bar, one end of the spring is abutted to the inside of the shell (1), and the other end of the spring is abutted to a raised ring at the rear end of the movable loop bar; when the detection needle is abutted to the bottom of the periodontal pocket and then continuously receives a downward force, the detection needle can apply a traction force to the traction wire (2), the detection needle moves upwards along the probe sleeve (3), the traction wire (2) drives the movable loop bar to compress the spring, and the movable loop bar moves forwards; when the probe needle leaves the bottom of the periodontal pocket, the probe needle stops applying traction force to the traction wire (2), the elastic force of the spring drives the movable sleeve rod to move backwards, and the probe needle moves downwards along the probe sleeve (3); the displacement sensor is arranged on the movable sleeve rod and used for measuring the depth of a periodontal pocket by measuring the displacement of the movable sleeve rod, the detection needle comprises a needle rod part and a circular ring part (4), the circular ring part (4) is fixedly arranged at the upper end of the needle rod part, the needle rod part is movably sleeved in the probe sleeve (3) and comprises a fine needle rod part and a thick needle rod part (5), the thick needle rod part (5) is arranged at the upper end of the fine needle rod part, and the circular ring part (4) is arranged at the upper end of the thick needle rod part (5); the probe needle passes through thin needle pole portion movably to overlap locate in probe sleeve (3), the internal diameter of probe sleeve (3) is greater than the external diameter of thin needle pole portion, the internal diameter of probe sleeve (3) is less than the external diameter of thick needle pole portion (5), thin needle pole portion with form spacing step, its characterized in that between thick needle pole portion (5): thin needle pole portion is including first thin needle pole section (6), the thin needle pole section of second (7) and the thin needle pole section of third (8) that from top to bottom sets gradually, the upper end of first thin needle pole section (6) with thick needle pole portion (5) fixed connection, first thin needle pole section (6) with thick needle pole portion (5) coaxial setting, the probe needle passes through first thin needle pole section (6) movably cover is located in probe sleeve (3), the both ends of the thin needle pole section of second (7) respectively with the lower extreme of first thin needle pole section (6) with the upper end buckle connection of the thin needle pole section of third (8), first thin needle pole section (6) and the thin needle pole section of third (8) are parallel and the interval sets up each other, first thin needle pole section (6) are located the thin needle pole section of third (8) with between pull wire (2), the preceding thin needle pole section of first (6) and the thin needle pole section of second (7) upside are used for the formation of needle pole (7) An avoidance region of the avoidance bracket (9).

2. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 1, wherein: the included angle between the two ends of the second thin needle rod section (7) and the bent connection part of the lower end of the first thin needle rod section (6) and the upper end of the third thin needle rod section (8) is 100-120 degrees.

3. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 2, wherein: the included angle of the bent connection part of the two ends of the second thin needle rod section (7) and the lower end of the first thin needle rod section (6) and the upper end of the third thin needle rod section (8) is 110 degrees.

4. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 2, wherein: the included angle between the two ends of the second thin needle rod section (7) and the bending connection part of the lower end of the first thin needle rod section (6) and the upper end of the third thin needle rod section (8) is 109 degrees.

5. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to any one of claims 1 to 4, wherein: and the shell (1) is provided with a blue LED lamp (10) and an LED lamp control switch (11) for controlling the blue LED lamp (10) to be connected with and disconnected from the power supply device.

6. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 5, wherein: the LED lamp control switch (11) is a button switch.

7. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 5, wherein: the blue LED lamp (10) is positioned on the lower side of the front part of the shell (1), and the light emitting direction (12) of the blue LED lamp (10) is intersected with the needle point of the lower end of the thin needle rod part.

8. The periodontal pocket depth measurement device adapted for use with an orthodontic patient according to claim 7, wherein: the LED lamp control switch (11) is located on the upper side of the middle of the shell (1).