Adjustable pulp opening positioner

Abstract

The utility model relates to the technical field of dental medical instruments, in particular to an adjustable pulp opening positioner. Comprising an operating rod and a blocking wafer, the rear end of the operating rod is a round rod, the front end of the operating rod is a taper round rod, a ball head is arranged at the tail end of the taper round rod, and two rectangular grooves which are symmetrical in the radial direction are formed in the length direction of the operating rod. A center hole is formed in the center of the blocking wafer, two rectangular teeth which are symmetrical in the radial direction are arranged in the center hole, and the rectangular teeth of the blocking wafer are clamped in the rectangular groove of the operating handle in a sliding mode. Four annular grooves are arranged on the taper round rod of the operating rod at intervals of 1mm, the annular grooves are communicated with the rectangular grooves on the operating rod, the diameters of the bottoms of the four annular grooves are the same and are equal to the diameters of the bottoms of the rectangular grooves, and each annular groove is provided with two upward grooves which are radially symmetrical between the two rectangular grooves. And the rectangular teeth of the blocking wafer can rotate in the rectangular groove and the annular groove on the operating rod. The blocking wafer is a spherical surface with the center protruding downwards, and when the blocking wafer is at the lowest position, the distance from the low point to the low point of the ball head is 4 mm.

Description

Technical Field

[0001] The utility model relates to the technical field of dental medical instruments, in particular to an adjustable pulp opening locator. Background Art

[0002] At present, ordinary pulp opening instruments are used to open the pulp and find the root canal opening based solely on the doctor's experience, which is easy to damage the root canal. When dentists use ordinary pulp opening instruments for pulp treatment, due to the short distance from the top of the tooth to the pulp, the tooth body is easily damaged in the process of pulp opening and finding the root canal opening. This problem is more likely to occur to doctors who are not proficient in pulp opening and root canal treatment.

[0003] From the outside to the inside, teeth are generally composed of enamel, dentin, and pulp. Since the average thickness of enamel is 0.2-0.25cm and the average thickness of dentin is 0.2-0.3cm, it can be roughly calculated that the distance from the occlusal surface to the pulp of the tooth is about 0.4-0.55cm.

[0004] The distance from the top to the bottom of the pulp chamber is generally less than 2 mm.

[0005] The pulp cavity of special young permanent teeth can reach 5mm.

[0006] Clinical experience shows that the distance from the occlusal surface to the pulp bottom of Chinese teeth is generally around 6.5-7mm.

[0007] According to these data, the utility model designs a pulp locator with an adjustable depth of 4mm-7mm, and adds a blocking disc with a diameter twice that of the ordinary pulp locator. The distance from the top of the tooth to the root canal opening is obtained through the image film, and the appropriate depth is adjusted to prevent the pulp from reaching the predetermined depth. On the basis of safe blocking, the tooth tissue can be safely removed and the root canal opening can be found. No matter how the doctor operates within this range, the tooth and the root canal opening will not be damaged. It is especially safer for doctors who have just learned root canal treatment to operate. Utility Model Content

[0008] The main purpose of the utility model is to provide an adjustable pulp opening locator so as to effectively solve the problems raised in the background technology.

[0009] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable medullary locator, including an operating rod and a blocking disc; the rear end of the operating rod is a round rod, the front end is a tapered round rod, a ball head is provided at the end of the tapered round rod, and two radially symmetrical rectangular grooves are provided along the length direction of the operating rod; a center hole is provided in the center of the blocking disc, and two radially symmetrical rectangular teeth are provided in the center hole, and the rectangular teeth are slidably clamped in the rectangular groove of the operating handle.

[0010] Preferably, four annular grooves with an interval of 1 mm are provided on the tapered round rod of the operating rod, and the four annular grooves are connected to the two rectangular grooves on the operating rod. The bottom diameters of the four annular grooves are the same and the same as the bottom diameters of the two rectangular grooves, and each annular groove is provided with two radially symmetrical upward grooves between the two rectangular grooves.

[0011] Preferably, the width and bottom diameter of the four upward grooves on the tapered round rod of the operating rod are the same as those of the rectangular groove on the operating rod.

[0012] Preferably, the center hole of the blocking disc is larger than the diameter of the rear end round rod of the operating rod by 0.1 mm, and the two symmetrical rectangular teeth arranged in the center hole of the blocking disc can rotate in the rectangular groove and the annular groove on the operating rod.

[0013] Preferably, the blocking disc is a spherical surface with a center convex downward.

[0014] Preferably, after the blocking disc is installed in the upward groove of the annular groove of the lowest layer of the operating rod, the distance from the lower point of the lower side of the blocking disc to the lower point of the ball head of the operating rod is 4 mm.

[0015] The utility model has the beneficial effects that the tooth tissue can be removed safely and the root canal opening can be found on the basis of safe blocking. No matter how the doctor operates within this range, the tooth and the root canal opening will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Attached Figure 2 This is a front structural schematic diagram of the operating lever of the utility model.

[0018] Attached Figure 3 It is a schematic diagram of the side structure of the operating rod of the utility model.

[0019] Attached Figure 4 This is a cross-sectional view of the operating rod of the utility model.

[0020] Attached Figure 5 This is a top view of the blocking disc of the utility model.

[0021] Attached Figure 6 It is a front view of the blocking disc of the utility model.

[0022] Attached Figure 1 —6, operating rod 1, blocking disc 2, ball head 3, annular groove 4, upward groove 5, rectangular groove 6, rectangular teeth 7. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] Attached Figure 1 —As shown in FIG6 , an adjustable pulp opening locator comprises an operating rod and a blocking disc; the operating rod 1 is a round rod at the rear end and a tapered round rod at the front end, a ball head 3 is provided at the end of the tapered round rod, and two radially symmetrical rectangular grooves 6 are provided along the length direction of the operating rod 1; a center hole is provided at the center of the blocking disc 2, and two radially symmetrical rectangular teeth 7 are provided in the center hole, and the rectangular teeth 7 are slidably mounted in the rectangular groove 6 of the operating handle 1.

[0026] Preferably, four annular grooves 4 with an interval of 1 mm are provided on the tapered round rod of the operating rod 1, and the four annular grooves 4 are all connected to the two rectangular grooves 6 on the operating rod 1. The bottom diameters of the four annular grooves 4 are the same and the same as the bottom diameters of the two rectangular grooves, and each annular groove 4 is provided with two radially symmetrical upward grooves 5 between the two rectangular grooves 6.

[0027] Preferably, the width and bottom diameter of the four upward grooves 5 on the tapered round rod of the operating rod 1 are the same as those of the rectangular groove 6 on the operating rod 1 .

[0028] Preferably, the center hole of the blocking disc 2 is 0.1 mm larger than the diameter of the rear end round rod of the operating rod 1 , and the two symmetrical rectangular teeth 7 arranged in the center hole of the blocking disc 2 can rotate in the rectangular groove and the annular groove 4 on the operating rod 1 .

[0029] Preferably, the blocking disc 2 is a spherical surface with a center convex downward.

[0030] Preferably, after the blocking disc 2 is installed in the upward groove 5 of the annular groove 4 of the lowest layer of the operating rod 1, the distance from the lower point of the blocking disc 2 to the lower point of the ball head 3 of the operating rod is 4 mm.

[0031] The distance from the top of the tooth to the root canal orifice is obtained through the image film, the annular groove 4 of the corresponding depth is selected, the rectangular teeth of the inner hole of the blocking disc are inserted into the rectangular groove 6 on the operating rod 1, and the blocking disc is rotated in the annular groove 4 of the selected depth, and the rectangular teeth 7 of the blocking disc 2 are inserted into the upward groove 5 in the annular groove, and the surgical operation can be performed.

[0032] On the basis of safe blocking, you can safely remove tooth tissue and find the root canal opening. No matter how the doctor operates within this range, the tooth and the root canal opening will not be damaged.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable medullary opening locator, characterized in that: It includes an operating rod and a blocking disc; the rear end of the operating rod is a round rod, the front end is a tapered round rod, a ball head is arranged at the end of the tapered round rod, and two radially symmetrical rectangular grooves are arranged along the length direction of the operating rod; a center hole is arranged in the center of the blocking disc, and two radially symmetrical rectangular teeth are arranged in the center hole, and the rectangular teeth are slidably clamped in the rectangular groove of the operating handle.

2. The adjustable medullary opening locator according to claim 1, characterized in that: Four annular grooves with an interval of 1 mm are arranged on the tapered round rod of the operating rod. The four annular grooves are connected to the two rectangular grooves on the operating rod. The bottom diameters of the four annular grooves are the same and the same as the bottom diameters of the two rectangular grooves, and each annular groove is provided with two radially symmetrical upward grooves between the two rectangular grooves.

3. The adjustable medullary opening locator according to claim 2, characterized in that: The width and bottom diameter of the four upward grooves on the tapered round rod of the operating rod are the same as those of the rectangular groove on the operating rod.

4. The adjustable medullary opening locator according to claim 1, characterized in that: The central hole of the blocking disc is larger than the diameter of the rear end round rod of the operating rod by 0.1 mm, and two symmetrical rectangular teeth arranged in the central hole of the blocking disc can rotate in the rectangular groove and the annular groove on the operating rod.

5. The adjustable medullary opening locator according to claim 1, characterized in that: The blocking disc is a spherical surface with a center convex downward.

6. The adjustable medullary opening locator according to claim 1, characterized in that: After the blocking disc is installed in the upward groove of the annular groove at the lowest layer of the operating rod, the distance from the lower point of the lower side of the blocking disc to the lower point of the ball head of the operating rod is 4 mm.

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