A gutta-percha tip trimmer

Abstract

The present invention discloses a gutta-percha tip trimmer. A dentist selects a gutta-percha tip that needs to be trimmed and determines the cross-sectional size that needs to be trimmed. Then, the gutta-percha tip is rotated and inserted into the positioning hole of the corresponding specification size. Then, the slider is pushed by hand, and the slider slides on the base, so that the blade cuts off the redundant part of the gutta-percha tip, and the gutta-percha tip of the required size is trimmed. Furthermore, through the positioning holes of various specifications, the cutting cross-sectional size of the gutta-percha tip can be ensured to be accurate. Furthermore, the blade is symmetrically arranged in the slide groove. On the one hand, bidirectional arbitrary cutting can be performed along the base. On the other hand, the blade edge of the blade is not exposed, which is safer and more reliable. The cutting of the gutta-percha tip is performed on the guide rail, which can reduce the unnecessary contact area of ​​the blade during cutting, and can make the blade stick more tightly to the guide rail, thereby improving the use effect of the gutta-percha tip trimmer and providing a better user experience.

Description

Technical Field

[0001] The invention relates to the field of oral medical instruments, and in particular to a gutta-percha tip trimmer. Background Art

[0002] During root canal treatment, the cleaned and prepared root canals need to be densely filled in three dimensions to eliminate dead space and prevent the infiltration of external bacteria and contaminants, thereby preventing the root canal system from being infected again. In modern root canal filling technology, gutta-percha points are the most widely used and mainstream root filling materials. Before filling, you first need to select a gutta-percha point of appropriate size according to the working length of the patient's root canal and the size of the prepared root canal, and then trim and cut off the unnecessary part.

[0003] When filling the root canal, the ideal filling stop point should be consistent with the stop point of the root canal preparation, which is generally located at the physiological apical foramen or the narrowest part of the apex. If overfilling or underfilling occurs, the effect of root canal treatment will be affected. When overfilling, bacteria and other infectious substances will be pushed into the apical foramen, causing periapical inflammation. In addition, the root filling material will cause foreign body reaction or toxic stimulation in the periapical tissue. When underfilling, the periapical tissue fluid and exudate can infiltrate back into the unfilled root canal. The decomposition and reproduction of the exudate lead to reinfection and failure of root canal treatment. Therefore, it is very important to determine the length and taper size of the gutta-percha tip before root filling.

[0004] At present, there are many kinds of gutta-percha trimming tools on the market, including push-in type, press type, rotary type and other structural forms, but the use effect is not satisfactory, resulting in a poor user experience. Summary of the invention

[0005] The purpose of the present invention is to provide a gutta-percha tip trimmer, aiming to solve the technical problems that the gutta-percha tip trimmer in the prior art has unsatisfactory use effect and poor user experience.

[0006] To achieve the above-mentioned purpose, the present invention adopts a gutta-percha tip trimmer, including a base, a slider assembly and a limit piece, the base is provided with at least one guide rail, and positioning holes of different specifications running through each guide rail and the base, the slider assembly includes a slider and a blade, the slider is clearance-matched with the base, the slider slides along the base, the slider is provided with a countersunk hole and at least one slide groove, the slide groove is clearance-matched with the guide rail, the number of the blades is at least two, each of the blades is fixedly connected to the slider and is located inside each of the slide grooves, and each of the slide grooves is provided with two of the blades, and the two blades are symmetrically arranged along the length extension direction of the guide rail, the limit piece is fixedly connected to the base and is located at both ends of the length extension direction of the base.

[0007] Each of the positioning holes has a guide cavity and a measuring cavity, the guide cavity is a cylindrical cavity, and the measuring cavity is a conical cavity.

[0008] Wherein, each of the blades is made of stainless steel and has a thickness of 0.1 mm to 0.2 mm.

[0009] Among them, the sliding block is provided with an X-shaped cross-bevel groove, each of the blades is fixedly connected to the bevel groove, and the edge side of each blade is close to the horizontal plane of the guide rail and forms an angle of 25° with the horizontal plane of the guide rail.

[0010] Wherein, one end of the sliding block away from the guide rail is arranged in a concave arc shape.

[0011] Wherein, the slider assembly also includes an elastic member and a supporting member, one end of the elastic member is fixedly connected to the slider, the other end of the elastic member is fixedly connected to the supporting member, and the elastic member and the supporting member are both located in the countersunk hole.

[0012] Among them, the outer wall of the base is provided with an aperture mark and a scale groove, the aperture mark is located on one side of the positioning hole, and each positioning hole corresponds to an aperture mark, and the scale groove is respectively located on one side of each guide rail.

[0013] Among them, the guide rail is provided on the base, the slide groove is provided on the slider, two blades are obliquely arranged on the slide groove, the slide groove and the guide rail are gap-matched, and the positioning holes of different specifications are arranged in a row along the length extension direction of the base.

[0014] Among them, a guide rail is provided on the base, a slide groove is provided on the slider, two blades are obliquely arranged on the slide groove, the slide groove is gap-matched with the guide rail, and the positioning holes of different specifications are divided into two groups, the two groups of positioning holes are respectively arranged at both ends of the base, and the two groups of positioning holes are arranged in a straight line along the length extension direction of the base, and a gap is left between the two groups of positioning holes.

[0015] Among them, two guide rails are provided on the base, two slide grooves are provided on the slider, two blades are obliquely provided on each slide groove, each slide groove is gap-matched with each corresponding guide rail, and the positioning holes of different specifications are divided into two groups, and the two groups of positioning holes are arranged side by side along the width extension direction of the base.

[0016] The beneficial effect of a gutta-percha tip trimmer of the present invention is embodied in that: the dentist selects the gutta-percha tip that needs to be trimmed, determines the cross-sectional size that needs to be trimmed, and then rotates the gutta-percha tip to insert it into the positioning hole of the corresponding specification size, and then pushes the slider by hand, the slider slides on the base, and then the blade cuts off the excess part of the gutta-percha tip to trim the gutta-percha tip of the required size. The gutta-percha tip trimmer is simple and convenient to operate, and has high efficiency. Through the positioning holes of various specifications, the cutting cross-sectional size of the gutta-percha tip can be ensured to be accurate, and the blade is symmetrically arranged in the slide groove. On the one hand, it can not only perform arbitrary bidirectional cutting along the base, but also the blade of the blade is not exposed, so that the finger cannot touch the blade, which is safer and more reliable; in addition, the plane of the guide rail protrudes from the plane of the base to achieve a separate height increase, and the cutting of the gutta-percha tip is performed on the guide rail, which can reduce the unnecessary contact area of ​​the blade during cutting, and can make the blade stick more tightly to the guide rail, thereby improving the use effect of the gutta-percha tip trimmer and providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of Example 1 of the gutta-percha tip trimmer of the present invention.

[0019] Figure 2 It is a schematic diagram of the bottom structure of Example 1 of the gutta-percha tip trimmer of the present invention.

[0020] Figure 3 It is a schematic structural diagram of Example 2 of the gutta-percha tip trimmer of the present invention.

[0021] Figure 4 It is a schematic diagram of the bottom structure of Example 2 of the gutta-percha tip trimmer of the present invention.

[0022] Figure 5 It is a schematic diagram of the overall structure of the slider assembly of Example 1 and Example 2 of the present invention.

[0023] Figure 6 It is a schematic diagram of the internal structure of the slider assembly of Example 1 and Example 2 of the present invention.

[0024] Figure 7 It is a schematic structural diagram of Example 3 of the gutta-percha tip trimmer of the present invention.

[0025] Figure 8 It is a schematic diagram of the bottom structure of Example 3 of the gutta-percha tip trimmer of the present invention.

[0026] Fig. 9 It is a schematic diagram of the overall structure of the slider assembly of Example 3 of the present invention.

[0027] Fig.10 It is a schematic diagram of the internal structure of the slider assembly of Example 3 of the present invention.

[0028] Fig.11 It is a schematic diagram of the internal structure of positioning holes of different specifications in Example 1, Example 2 and Example 3 of the present invention.

[0029] 100-gutta-percha tip trimmer, 10-base, 11-guide rail, 12-positioning hole, 121-guide cavity, 122-measuring cavity, 13-aperture identification, 14-gradient groove, 20-slider assembly, 21-slider, 211-countersunk hole, 212-slide groove, 213-bevel groove, 22-blade, 23-elastic member, 24-holding member, 30-limiting member. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] Example 1

[0033] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig.11The present invention provides a gutta-percha tip trimmer 100, comprising a base 10, a slider assembly 20 and a stopper 30, wherein the base 10 is provided with at least one guide rail 11 and positioning holes 12 of different specifications that penetrate each of the guide rails 11 and the base 10, the slider assembly 20 comprises a slider 21 and a blade 22, the slider 21 is clearance-matched with the base 10, the slider 21 slides along the base 10, a countersunk hole 211 and at least one slide groove 212 are provided on the slider 21, the slide groove 212 is clearance-matched with the guide rail 11, the number of the blades 22 is at least two, each of the blades 22 is fixedly connected to the slider 21 and is located inside each of the slide grooves 212, and each of the slide grooves 212 is provided with two of the blades 22, and the two blades 22 are symmetrically arranged along the length extension direction of the guide rail 11, the stopper 30 is fixedly connected to the base 10 and is located at both ends of the length extension direction of the base 10.

[0034] Furthermore, each of the positioning holes 12 has a guide cavity 121 and a measuring cavity 122 , the guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity.

[0035] Furthermore, each of the blades 22 is made of stainless steel and has a thickness of 0.1 mm to 0.2 mm.

[0036] Furthermore, the slider 21 is provided with an X-shaped cross-bevel groove 213, and each of the blades 22 is fixedly connected to the bevel groove 213, and the edge side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11.

[0037] Furthermore, one end of the slider 21 away from the guide rail 11 is arranged in a concave arc shape.

[0038] Furthermore, the slider assembly 20 also includes an elastic member 23 and a supporting member 24 , one end of the elastic member 23 is fixedly connected to the slider 21 , the other end of the elastic member 23 is fixedly connected to the supporting member 24 , and both the elastic member 23 and the supporting member 24 are located in the countersunk hole 211 .

[0039] Furthermore, an aperture mark 13 and a scale groove 14 are provided on the outer wall of the base 10, the aperture mark 13 is located on one side of the positioning hole 12, and each positioning hole 12 corresponds to an aperture mark 13, and the scale groove 14 is respectively located on one side of each guide rail 11.

[0040] Furthermore, a guide rail 11 is provided on the base 10, a slide groove 212 is provided on the slider 21, two blades 22 are obliquely arranged on the slide groove 212, the slide groove 212 is clearance-matched with the guide rail 11, and the positioning holes 12 of different specifications are arranged in a straight line along the length extension direction of the base 10.

[0041] In this embodiment, the base 10 is provided with a guide rail 11, the slider 21 is provided with a slide groove 212, two blades 22 are obliquely arranged on the slide groove 212, the slide groove 212 is in clearance with the guide rail 11, and the positioning holes 12 of different specifications are arranged in a straight line along the length extension direction of the base 10. The dentist selects the gutta-percha tip to be trimmed, determines the cross-sectional size to be trimmed, and then rotates the gutta-percha tip to insert it into the positioning hole 12 of the corresponding specification size, wherein the positioning hole 12 has 18 specifications, and the models are respectively "20", "25", "30", "35", "40", "45", "50", "55", "60", "65", "70", "80", "90", "100", "110", "120", "130", and "140", which can basically meet the trimming of all specifications of gutta-percha tips on the market. Medical staff can visually judge the specification of the positioning hole 12 by observing the aperture mark 13 on one side of the positioning hole 12, and then judge whether to insert the gutta-percha tip into the positioning hole 12 of the specification. Each positioning hole 12 has the guide cavity 121 and the measuring cavity 122. The guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity. For example: the aperture mark 13 is "20" or "25", which indicates the size of the diameter d of the measuring cavity 122 on the bottom surface. In terms of quantity, the aperture mark 13 is equal to 100 multiplied by the diameter d, that is, "20" means that d is equal to 0.2mm, and "25" means that d is equal to 0.25mm. Due to the difficulty in processing many gutta-percha tip trimmers on the market, the measuring cavity 122 is not a conical cavity, but a very thin cylindrical cavity is used instead. However, the gutta-percha tips are all tapered. If the measuring cavity 122 is a cylindrical cavity, when inserting the tip into the measuring cavity 122 for trimming, the actual cutting cross-sectional diameter will be smaller than the theoretical trimming cross-sectional diameter, and there will be inevitable errors. The measuring cavity 122 of the present invention is processed by a customized profiling tool, with accurate size and high precision, which can ensure the accuracy of the cutting cross-sectional size.

[0042] After the gutta-percha tip is inserted into the positioning hole 12 of the corresponding specification, the slider 21 is pushed by hand so that the slider 21 slides on the base 10, and then the two symmetrically arranged blades 22 on the slide 212 cut off the excess part of the gutta-percha tip, and trim the gutta-percha tip of the required size, wherein the blade 22 is a stainless steel blade with a thickness of 0.1mm to 0.2mm, and preferably the thickness of the blade 22 is 0.1mm, and the blade 22 is extremely sharp, has high hardness and is wear-resistant. In addition, since the slider 21 is provided with an X-shaped cross-bevel groove 213, each of the blades 22 is fixedly connected to the bevel groove 213 by anaerobic glue, and the anaerobic glue can withstand a high temperature of more than 200 degrees, so the gutta-percha tip trimmer can be sterilized at high temperature. The blade side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11, and the plane of the guide rail 11 protrudes from the plane of the base 10 to achieve a separate height increase. The cutting of the gutta-percha tip is performed on the guide rail 11, which can reduce the unnecessary contact area of ​​the blade 22 during cutting, and can make the blade 22 stick more tightly to the guide rail 11. Therefore, when working, the blade 22 can cut off the exposed gutta-percha tip along the bottom surface of the positioning hole 12 (equivalent to shoveling off), and the cut section is very flat. And because the blade 22 is very thin and sharp, the gutta-percha tip will not be flattened during cutting, and the cut section is still circular. Through the symmetrical arrangement of the two blades 22, the slider 21 can achieve cutting no matter in which direction it moves. On the other hand, the blades 22 are not exposed, so that the fingers cannot touch the blades 22, which is safer and more reliable. The limiting member 30 is a limiting screw, which can limit the movement of the slider 21 to prevent the slider 21 from sliding off the base 10.

[0043] By setting the end of the slider 21 away from the guide rail 11 in a concave arc structure, the dentist can feel more comfortable and reliable when pressing and moving the slider 21. The elastic member 23 is a compression spring, the abutment member 24 is a steel ball, and the slider 21 is clearance-matched with the base 10. When designing, a very small compression spring and steel ball are used to achieve pre-tightening. The compression spring is placed in the countersunk hole 211 on the slider 21, and the steel ball is placed on the compression spring. The compression amount of the spring, i.e., the pre-tightening force, is determined by the depth of the countersunk hole 211. When the slider 21 is installed on the base 10, the spring and the steel ball are confined in the countersunk hole 211 of the slider 21, and the steel ball is pressed against the plane of the base 10 under the action of the spring. Of course, since the compression amount of the spring is very small, the pre-tightening force is very small, which only ensures that the slider 21 cannot slide freely on the base 10, and does not affect the smoothness of movement during work. When the length of the gutta-percha tip needs to be measured, the gutta-percha tip can be placed in the scale groove 14 , and the length of the gutta-percha tip can be easily measured through the scale groove 14 on the base 10 .

[0044] The base 10 and the slider 21 are both made of aluminum alloy and are oxidized, so that the gutta-percha tip trimmer 100 is strong and durable, can be sterilized at high temperature, is lightweight, has a variety of colors to choose from, and has a beautiful appearance. At the same time, the entire gutta-percha tip trimmer is small and light in size, can be operated with one hand, is simple and convenient to use, and one person can complete the trimming of the gutta-percha tip with high work efficiency.

[0045] Based on the above description, it can be seen that the use effect of the gutta-percha tip trimmer 100 is improved, and the user experience is better.

[0046] Example 2

[0047] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig.11The present invention provides a gutta-percha tip trimmer 100, comprising a base 10, a slider assembly 20 and a stopper 30, wherein the base 10 is provided with at least one guide rail 11 and positioning holes 12 of different specifications that penetrate each of the guide rails 11 and the base 10, the slider assembly 20 comprises a slider 21 and a blade 22, the slider 21 is clearance-matched with the base 10, the slider 21 slides along the base 10, a countersunk hole 211 and at least one slide groove 212 are provided on the slider 21, the slide groove 212 is clearance-matched with the guide rail 11, the number of the blades 22 is at least two, each of the blades 22 is fixedly connected to the slider 21 and is located inside each of the slide grooves 212, and each of the slide grooves 212 is provided with two of the blades 22, and the two blades 22 are symmetrically arranged along the length extension direction of the guide rail 11, the stopper 30 is fixedly connected to the base 10 and is located at both ends of the length extension direction of the base 10.

[0048] Furthermore, each of the positioning holes 12 has a guide cavity 121 and a measuring cavity 122 , the guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity.

[0049] Furthermore, each of the blades 22 is made of stainless steel and has a thickness of 0.1 mm to 0.2 mm.

[0050] Furthermore, the slider 21 is provided with an X-shaped cross-bevel groove 213, and each of the blades 22 is fixedly connected to the bevel groove 213, and the edge side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11.

[0051] Furthermore, one end of the slider 21 away from the guide rail 11 is arranged in a concave arc shape.

[0052] Furthermore, the slider assembly 20 also includes an elastic member 23 and a supporting member 24 , one end of the elastic member 23 is fixedly connected to the slider 21 , the other end of the elastic member 23 is fixedly connected to the supporting member 24 , and both the elastic member 23 and the supporting member 24 are located in the countersunk hole 211 .

[0053] Furthermore, an aperture mark 13 and a scale groove 14 are provided on the outer wall of the base 10, the aperture mark 13 is located on one side of the positioning hole 12, and each positioning hole 12 corresponds to an aperture mark 13, and the scale groove 14 is respectively located on one side of each guide rail 11.

[0054] Furthermore, a guide rail 11 is provided on the base 10, a slide groove 212 is provided on the slider 21, two blades 22 are obliquely provided on the slide groove 212, the slide groove 212 is clearance-matched with the guide rail 11, and the positioning holes 12 of different specifications are divided into two groups, the two groups of positioning holes 12 are respectively arranged at both ends of the base 10, and the two groups of positioning holes 12 are arranged in a straight line along the length extension direction of the base 10, and a gap is left between the two groups of positioning holes 12.

[0055] In this embodiment, the dentist selects the gutta-percha tip that needs to be trimmed, determines the cross-sectional dimensions that need to be trimmed, and then rotates the gutta-percha tip to insert it into the positioning hole 12 of the corresponding specification and size, wherein the positioning hole 12 has 18 specifications, and the models are respectively "20", "25", "30", "35", "40", "45", "50", "55", "60", "65", "70", "80", "90", "100", "110", "120", "130", and "140", which can basically meet the trimming of all specifications of gutta-percha tips on the market. Medical staff can intuitively determine the specifications of the positioning hole 12 at that location by observing the aperture mark 13 on one side of the positioning hole 12, and then determine whether to insert the gutta-percha tip into the positioning hole 12 of the specification. Each positioning hole 12 has the guide cavity 121 and the measuring cavity 122, the guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity. For example, the aperture mark 13 is "20" or "25", which indicates the size of the diameter d of the measuring cavity 122 on the bottom surface. In terms of quantity, the aperture mark 13 is equal to 100 multiplied by the diameter d, that is, "20" indicates that d is equal to 0.2mm, and "25" indicates that d is equal to 0.25mm. Due to the difficulty of processing, many gutta-percha tip trimmers on the market do not have a conical cavity as the measuring cavity 122, but are replaced by a very thin cylindrical cavity. However, the gutta-percha tips are all tapered. If the measuring cavity 122 is a cylindrical cavity, when the measuring cavity 122 is inserted into the measuring cavity 122 for trimming, the actual cut section diameter is smaller than the theoretical trimmed section diameter, and there is an inevitable error. The measuring cavity 122 of the present invention is processed using a customized profiling tool, which is accurate in size and high in precision, and can ensure the accuracy of the cutting section size.

[0056] After the gutta-percha tip is inserted into the positioning hole 12 of the corresponding specification, the slider 21 is pushed by hand so that the slider 21 slides on the base 10, and then the two symmetrically arranged blades 22 on the slide 212 cut off the excess part of the gutta-percha tip, and trim the gutta-percha tip of the required size, wherein the blade 22 is a stainless steel blade with a thickness of 0.1mm to 0.2mm, and preferably the thickness of the blade 22 is 0.1mm, and the blade 22 is extremely sharp, has high hardness and is wear-resistant. In addition, since the slider 21 is provided with an X-shaped cross-bevel groove 213, each of the blades 22 is fixedly connected to the bevel groove 213 by anaerobic glue, and the anaerobic glue can withstand a high temperature of more than 200 degrees, so the gutta-percha tip trimmer can be sterilized at high temperature. The blade side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11, and the plane of the guide rail 11 protrudes from the plane of the base 10 to achieve a separate height increase. The cutting of the gutta-percha tip is performed on the guide rail 11, which can reduce the unnecessary contact area of ​​the blade 22 during cutting, and can make the blade 22 stick more tightly to the guide rail 11. Therefore, when working, the blade 22 can cut off the exposed gutta-percha tip along the bottom surface of the positioning hole 12 (equivalent to shoveling off), and the cut section is very flat. And because the blade 22 is very thin and sharp, the gutta-percha tip will not be flattened during cutting, and the cut section is still circular. Through the symmetrical arrangement of the two blades 22, the slider 21 can achieve cutting no matter in which direction it moves. On the other hand, the blades 22 are not exposed, so that the fingers cannot touch the blades 22, which is safer and more reliable. The limiting member 30 is a limiting screw, which can limit the movement of the slider 21 to prevent the slider 21 from sliding off the base 10.

[0057] By setting the end of the slider 21 away from the guide rail 11 in a concave arc structure, the dentist can feel more comfortable and reliable when pressing and moving the slider 21. The elastic member 23 is a compression spring, the abutment member 24 is a steel ball, and the slider 21 is clearance-matched with the base 10. When designing, a very small compression spring and steel ball are used to achieve pre-tightening. The compression spring is placed in the countersunk hole 211 on the slider 21, and the steel ball is placed on the compression spring. The compression amount of the spring, i.e., the pre-tightening force, is determined by the depth of the countersunk hole 211. When the slider 21 is installed on the base 10, the spring and the steel ball are confined in the countersunk hole 211 of the slider 21, and the steel ball is pressed against the plane of the base 10 under the action of the spring. Of course, since the compression amount of the spring is very small, the pre-tightening force is very small, which only ensures that the slider 21 cannot slide freely on the base 10, and does not affect the smoothness of movement during work. When the length of the gutta-percha tip needs to be measured, the gutta-percha tip can be placed in the scale groove 14 , and the length of the gutta-percha tip can be easily measured through the scale groove 14 on the base 10 .

[0058] The base 10 and the slider 21 are both made of aluminum alloy and are oxidized, so that the gutta-percha tip trimmer 100 is strong and durable, can be sterilized at high temperature, is lightweight, has a variety of colors to choose from, and has a beautiful appearance. At the same time, the entire gutta-percha tip trimmer is small and light in size, can be operated with one hand, is simple and convenient to use, and one person can complete the trimming of the gutta-percha tip with high work efficiency.

[0059] And by providing a guide rail 11 on the base 10, a slide groove 212 on the slider 21, two blades 22 are obliquely provided on the slide groove 212, the slide groove 212 is gap-matched with the guide rail 11, and the positioning holes 12 of different specifications are divided into two groups, the two groups of positioning holes 12 are respectively arranged at the two ends of the base 10, and the two groups of positioning holes 12 are arranged in a straight line along the length extension direction of the base 10, and a gap is left between the two groups of positioning holes 12. It can be seen that the structure of the gutta-percha tip trimmer 100 of Example 2 is different from that of the gutta-percha tip trimmer 100 of Example 1, and the difference is that the base 10 is different, and the rest of the structures are the same, and the length of the base 10 of Example 2 is longer than that of the base 10 of Example 1, and the positioning holes 12 of 18 different specifications are evenly divided into two groups, and are respectively processed at the two ends of the base 10, leaving the middle part empty. The advantage of this design is that when the gutta-percha tip trimmer is operated with one hand, a sufficient portion can be held in the hand, the grip is more secure, and the direction can be turned to select any positioning hole 12 to work. Moreover, the aperture markings 13 of the two groups of positioning holes 12 are symmetrical, and even if the direction is turned, the aperture markings 13 of the working group of positioning holes 12 are still displayed normally without flipping, so that the operation is more intuitive.

[0060] Based on the above description, it can be seen that the use effect of the gutta-percha tip trimmer 100 is improved, and the user experience is better.

[0061] Example 3

[0062] See also Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The present invention provides a gutta-percha tip trimmer 100, comprising a base 10, a slider assembly 20 and a stopper 30, wherein the base 10 is provided with at least one guide rail 11 and positioning holes 12 of different specifications that penetrate each of the guide rails 11 and the base 10, the slider assembly 20 comprises a slider 21 and a blade 22, the slider 21 is clearance-matched with the base 10, the slider 21 slides along the base 10, a countersunk hole 211 and at least one slide groove 212 are provided on the slider 21, the slide groove 212 is clearance-matched with the guide rail 11, the number of the blades 22 is at least two, each of the blades 22 is fixedly connected to the slider 21 and is located inside each of the slide grooves 212, and each of the slide grooves 212 is provided with two of the blades 22, and the two blades 22 are symmetrically arranged along the length extension direction of the guide rail 11, the stopper 30 is fixedly connected to the base 10 and is located at both ends of the length extension direction of the base 10.

[0063] Furthermore, each of the positioning holes 12 has a guide cavity 121 and a measuring cavity 122 , the guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity.

[0064] Furthermore, each of the blades 22 is made of stainless steel and has a thickness of 0.1 mm to 0.2 mm.

[0065] Furthermore, the slider 21 is provided with an X-shaped cross-bevel groove 213, and each of the blades 22 is fixedly connected to the bevel groove 213, and the edge side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11.

[0066] Furthermore, one end of the slider 21 away from the guide rail 11 is arranged in a concave arc shape.

[0067] Furthermore, the slider assembly 20 also includes an elastic member 23 and a supporting member 24 , one end of the elastic member 23 is fixedly connected to the slider 21 , the other end of the elastic member 23 is fixedly connected to the supporting member 24 , and both the elastic member 23 and the supporting member 24 are located in the countersunk hole 211 .

[0068] Furthermore, the outer wall of the base 10 is provided with an aperture mark 13 and a scale groove 14, the aperture mark 13 is located on one side of the positioning hole 12, and each positioning hole 12 corresponds to one aperture mark 13, and the scale groove 14 is respectively located on one side of each guide rail 11. Two guide rails 11 are provided on the base 10, and two slide grooves 212 are provided on the slider 21. Two blades 22 are obliquely provided on each slide groove 212, and each slide groove 212 is gap-matched with each corresponding guide rail 11. The positioning holes 12 of different specifications are divided into two groups, and the two groups of positioning holes 12 are arranged side by side along the width extension direction of the base 10.

[0069] In this embodiment, the dentist selects the gutta-percha tip that needs to be trimmed, determines the cross-sectional dimensions that need to be trimmed, and then rotates the gutta-percha tip to insert it into the positioning hole 12 of the corresponding specification and size, wherein the positioning hole 12 has 18 specifications, and the models are respectively "20", "25", "30", "35", "40", "45", "50", "55", "60", "65", "70", "80", "90", "100", "110", "120", "130", and "140", which can basically meet the trimming of all specifications of gutta-percha tips on the market. Medical staff can intuitively determine the specifications of the positioning hole 12 at that location by observing the aperture mark 13 on one side of the positioning hole 12, and then determine whether to insert the gutta-percha tip into the positioning hole 12 of the specification. Each positioning hole 12 has the guide cavity 121 and the measuring cavity 122, the guide cavity 121 is a cylindrical cavity, and the measuring cavity 122 is a conical cavity. For example, the aperture mark 13 is "20" or "25", which indicates the size of the diameter d of the measuring cavity 122 on the bottom surface. In terms of quantity, the aperture mark 13 is equal to 100 multiplied by the diameter d, that is, "20" indicates that d is equal to 0.2mm, and "25" indicates that d is equal to 0.25mm. Due to the difficulty of processing, many gutta-percha tip trimmers on the market do not have a conical cavity as the measuring cavity 122, but are replaced by a very thin cylindrical cavity. However, the gutta-percha tips are all tapered. If the measuring cavity 122 is a cylindrical cavity, when the measuring cavity 122 is inserted into the measuring cavity 122 for trimming, the actual cut section diameter is smaller than the theoretical trimmed section diameter, and there is an inevitable error. The measuring cavity 122 of the present invention is processed using a customized profiling tool, which is accurate in size and high in precision, and can ensure the accuracy of the cutting section size.

[0070] After the gutta-percha tip is inserted into the positioning hole 12 of the corresponding specification, the slider 21 is pushed by hand so that the slider 21 slides on the base 10, and then the two symmetrically arranged blades 22 on the slide 212 cut off the excess part of the gutta-percha tip, and trim the gutta-percha tip of the required size, wherein the blade 22 is a stainless steel blade with a thickness of 0.1mm to 0.2mm, and preferably the thickness of the blade 22 is 0.1mm, and the blade 22 is extremely sharp, has high hardness and is wear-resistant. In addition, since the slider 21 is provided with an X-shaped cross-bevel groove 213, each of the blades 22 is fixedly connected to the bevel groove 213 by anaerobic glue, and the anaerobic glue can withstand a high temperature of more than 200 degrees, so the gutta-percha tip trimmer can be sterilized at high temperature. The blade side of each blade 22 is close to the horizontal plane of the guide rail 11 and forms an angle of 25° with the horizontal plane of the guide rail 11, and the plane of the guide rail 11 protrudes from the plane of the base 10 to achieve a separate height increase. The cutting of the gutta-percha tip is performed on the guide rail 11, which can reduce the unnecessary contact area of ​​the blade 22 during cutting, and can make the blade 22 stick more tightly to the guide rail 11. Therefore, when working, the blade 22 can cut off the exposed gutta-percha tip along the bottom surface of the positioning hole 12 (equivalent to shoveling off), and the cut section is very flat. And because the blade 22 is very thin and sharp, the gutta-percha tip will not be flattened during cutting, and the cut section is still circular. Through the symmetrical arrangement of the two blades 22, the slider 21 can achieve cutting no matter in which direction it moves. On the other hand, the blades 22 are not exposed, so that the fingers cannot touch the blades 22, which is safer and more reliable. The limiting member 30 is a limiting screw, which can limit the movement of the slider 21 to prevent the slider 21 from sliding off the base 10.

[0071] By setting the end of the slider 21 away from the guide rail 11 in a concave arc structure, the dentist can feel more comfortable and reliable when pressing and moving the slider 21. The elastic member 23 is a compression spring, the abutment member 24 is a steel ball, and the slider 21 is clearance-matched with the base 10. When designing, a very small compression spring and steel ball are used to achieve pre-tightening. The compression spring is placed in the countersunk hole 211 on the slider 21, and the steel ball is placed on the compression spring. The compression amount of the spring, i.e., the pre-tightening force, is determined by the depth of the countersunk hole 211. When the slider 21 is installed on the base 10, the spring and the steel ball are confined in the countersunk hole 211 of the slider 21, and the steel ball is pressed against the plane of the base 10 under the action of the spring. Of course, since the compression amount of the spring is very small, the pre-tightening force is very small, which only ensures that the slider 21 cannot slide freely on the base 10, and does not affect the smoothness of movement during work. When the length of the gutta-percha tip needs to be measured, the gutta-percha tip can be placed in the scale groove 14 , and the length of the gutta-percha tip can be easily measured through the scale groove 14 on the base 10 .

[0072] The base 10 and the slider 21 are both made of aluminum alloy and are oxidized, so that the gutta-percha tip trimmer 100 is strong and durable, can be sterilized at high temperature, is lightweight, has a variety of colors to choose from, and has a beautiful appearance. At the same time, the entire gutta-percha tip trimmer is small and light in size, can be operated with one hand, is simple and convenient to use, and one person can complete the trimming of the gutta-percha tip with high work efficiency.

[0073] And by providing two guide rails 11 on the base 10, two slide grooves 212 on the slider 21, two blades 22 are obliquely provided on each slide groove 212, each slide groove 212 is gap-matched with each corresponding guide rail 11, and the positioning holes 12 of different specifications are divided into two groups, and the two groups of positioning holes 12 are arranged side by side along the width extension direction of the base 10. It can be seen that the structure of the gutta-percha tip trimmer 100 of Example 3 is different from that of the gutta-percha tip trimmer 100 of Example 1 in that: the 18 positioning holes 12 of different specifications are evenly divided into two groups, each with 9 types, and two rows are designed side by side and arranged on the base 10, so the base 10 in Example 3 is the shortest in the length direction and the widest in the width direction. And because this embodiment has enough space in the width direction, two scale grooves 14 are designed and arranged symmetrically, so that the dentist can select the appropriate scale groove 14 for intuitive measurement no matter which hand holds the trimmer and which hand holds the gutta-percha tip during operation. Since this embodiment has two guide rails 11, that is, two slide grooves 212, each slide groove 212 has two symmetrically arranged blades 22, and there are four blades 22 in total, the elastic member 23 and the abutment member 24 are installed between the two slide grooves 212, that is, located between the two guide rails 11, so that the pre-tightening effect is more balanced. The limit members 30 are arranged at both ends of the length direction of the two guide rails 11.

[0074] Based on the above description, it can be seen that the use effect of the gutta-percha tip trimmer 100 is improved, and the user experience is better.

[0075] It can be seen from Examples 1, 2 and 3 that the innovative features of the gutta-percha tip trimmer 100 are as follows:

[0076] It integrates the measurement and cutting functions in one unit, is simple and convenient to operate, highly efficient, and compact and light.

[0077] A stainless steel blade is used with a thickness of only 0.1 mm and is extremely sharp. The blade 22 is installed at an angle and is in close contact with the surface of the base 10. When cutting, the tip of the gutta-percha will not be flattened, ensuring that the cut section is flat and round.

[0078] The blades 22 are installed obliquely inside the slider 21 and are arranged symmetrically, and can cut arbitrarily in both directions along the base 10 .

[0079] Since the blade 22 is built into the slider 21 and cannot be touched by fingers, it is very safe and reliable when used.

[0080] The slider 21 and the base 10 are clearance-fitted, and are slightly pre-tightened by compression springs and steel balls, so that the slider 21 does not slide in a free state, but can be easily moved during operation.

[0081] The positioning hole 12 is composed of the guide cavity 121 and the measuring cavity 122 , and the measuring cavity 122 is processed by a special profiling tool and has accurate size.

[0082] Therefore, the gutta-percha tip trimmer 100 is designed and produced with high precision, which can effectively ensure the trimming accuracy of the gutta-percha tip, making root canal filling easier and more rigorous. The gutta-percha tip can be trimmed to reduce resource waste. After being cut with the gutta-percha tip trimmer, the tip of the gutta-percha tip can be kept in a round shape, making the filling more rigorous. It can be sterilized at high temperature and reused. It has precise dimensions and is available in a variety of specifications. It can be cut with a gentle push, which is simple and easy to use; the metal material is durable and not easy to wear, thereby improving the use effect and providing a better user experience.

[0083] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A gutta-percha tip trimmer, characterized in that: The invention comprises a base, a slider assembly and a stopper, wherein the base is provided with at least one guide rail and positioning holes of different specifications that penetrate each guide rail and the base, the slider assembly comprises a slider and a blade, the slider is in clearance with the base, the slider slides along the base, the slider is provided with a countersunk hole and at least one slide groove, the slide groove is in clearance with the guide rail, the number of the blades is at least two, each of the blades is fixedly connected to the slider and is located inside each of the slide grooves, and each of the slide grooves is provided with two blades, and the two blades are symmetrically arranged along the length extension direction of the guide rail, and the stopper is fixedly connected to the base and is located at both ends of the length extension direction of the base; Each of the positioning holes has a guide cavity and a measuring cavity, the guide cavity is a cylindrical cavity, and the measuring cavity is a conical cavity; The slider is provided with an X-shaped cross-bevel groove, each of the blades is fixedly connected to the bevel groove, and the edge side of each blade is in close contact with the horizontal plane of the guide rail and forms an angle of 25° with the horizontal plane of the guide rail; The end of the slider away from the guide rail is arranged in a concave arc shape; The slider assembly further comprises an elastic member and a resisting member, one end of the elastic member is fixedly connected to the slider, the other end of the elastic member is fixedly connected to the resisting member, and the elastic member and the resisting member are both located in the countersunk hole; the elastic member is a compression spring, the resisting member is a steel ball, the slider and the base are clearance-matched, the compression spring and the steel ball are pre-tightened, the compression spring is placed in the countersunk hole on the slider, the steel ball is placed on the compression spring, and the compression amount of the spring is determined by the depth of the countersunk hole; The outer wall of the base is provided with an aperture mark and a scale groove, the aperture mark is located on one side of the positioning hole, and each positioning hole corresponds to one aperture mark, and the scale groove is respectively located on one side of each guide rail; The base is provided with a guide rail, the slider is provided with a slide groove, two blades are obliquely arranged on the slide groove, the slide groove is gap-matched with the guide rail, the positioning holes of different specifications are divided into two groups, the two groups of positioning holes are respectively arranged at both ends of the base, and the two groups of positioning holes are arranged in a straight line along the length extension direction of the base, and a gap is left between the two groups of positioning holes.

2. The gutta-percha tip trimmer according to claim 1, characterized in that: Each of the blades is made of stainless steel and has a thickness of 0.1 mm to 0.2 mm.

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