Novel anti-fracture nickel-titanium file

Abstract

The utility model discloses a novel anti-break nickel titanium file which comprises a file handle and a file body, the file body is installed at the bottom of the file handle, the file body comprises a connecting section, a guiding section and a cutting section, the connecting section is fixedly arranged at the bottom of the file handle, the guiding section is detachably installed at the bottom of the cutting section, and the cutting section is connected with the guiding section. Cutting threads are arranged on the peripheral side of the sub-cutting section, the guiding section is of a cone structure and is located at the file tip part, the top of the sub-cutting section is connected with a connecting section through a second mounting mechanism, the second mounting mechanism comprises an inserting rod, the inserting rod is fixedly arranged at the top of the sub-cutting section, and the inserting rod is fixedly connected with the guiding section. According to the nickel titanium file, the problems that the whole file body of a traditional nickel titanium file is provided with cutting threads from top to bottom and from thick to thin, and in the cutting process, the thin tip is prone to being broken in a root canal when the root canal is bent or thin and narrow are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nickel titanium file technical field especially is related to a novel anti breakage nickel titanium file. BACKGROUND

[0002] Nickel titanium file is a kind of medical instrument widely used in dental root canal therapy. It is mainly used to remove pulp tissue in root canal, clean root canal wall and expand root canal to fill. Traditional nickel titanium file is usually made of nickel titanium alloy, which has good flexibility and fatigue resistance, and can be used in complex root canal environment.

[0003] However, the whole file body of traditional nickel titanium file is from top to bottom, from thick to thin, and has cutting thread all over, and in the cutting process, the thinner tip is easy to break in root canal when root canal is curved or narrow, and such breakage not only increases the complexity of treatment, but also can cause damage to the root canal of patient, affects treatment effect, therefore the utility model provides a novel anti breakage nickel titanium file to solve the above problems. SUMMARY

[0004] In view of the defects existing in the prior art, the utility model aims at providing a novel anti breakage nickel titanium file.

[0005] To achieve the above object, the utility model provides a novel anti breakage nickel titanium file, which comprises a file handle and a file body, the file body is installed at the bottom of the file handle, the file body comprises a connecting section, a guide section and a split cutting section, the connecting section is fixedly arranged at the bottom of the file handle, the bottom of the split cutting section is detachably installed with the guide section, the peripheral side of the split cutting section is provided with cutting thread, the guide section is a conical structure, located in the file tip part, the top of the split cutting section is installed and connected with the connecting section through the second installation mechanism, the second installation mechanism comprises a plug rod, the plug rod is fixedly arranged at the top of the split cutting section, the bottom of the connecting section is provided with a plug slot, and the plug rod is detachably inserted and installed in the plug slot.

[0006] Further, the two sides of the connecting section are respectively provided with clamping holes, the clamping holes are communicated with the plug slot, the two sides of the plug rod are respectively provided with recesses, a plurality of telescopic spring mechanisms are fixedly arranged on the inner wall of the recess, a clamping block is arranged in the recess, and the telescopic spring mechanism is fixedly connected with the clamping block.

[0007] Further, the telescopic spring mechanism comprises a fixed rod, one end of the fixed rod is fixedly arranged on the inner wall of the recess, the other end of the fixed rod is provided with a horizontal groove, a movable rod is movably inserted in the horizontal groove, one end of the movable rod is fixedly connected with a spring, the spring is fixedly arranged on the inner wall of the horizontal groove, and the other end of the movable rod is fixedly connected with the clamping block.

[0008] Further, the file handle comprises a file handle head and a file handle body, the file handle head is fixedly installed with the root canal preparation machine, and the side wall of the file handle body is provided with a counting area, the counting area comprises a plurality of circular coils, and the circular coils are arranged in the longitudinal direction on the outer wall of the file handle body.

[0009] Further, the circular coils are provided with ten circular grooves, and a label is pasted in each circular groove.

[0010] Further, the connecting section is in a cylindrical structure, and a scale line is arranged on the outer side of the connecting section.

[0011] Further, the guide section is connected with the split cutting section through the first mounting mechanism, the split cutting section comprises a threaded rod, the threaded rod is fixedly arranged at the top of the guide section, a threaded hole is arranged at the bottom of the split cutting section, and the guide section is installed with the split cutting section by screwing the threaded rod into the threaded hole.

[0012] Further, a rubber ring is sleeved on the threaded rod, a rubber ring groove is arranged at the bottom of the guide section, the rubber ring is matched with the rubber ring groove, and the rubber ring groove is communicated with the threaded hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The guide section is connected with the split cutting section through the first mounting mechanism, specifically, the threaded rod at the top of the guide section is screwed into the threaded hole at the bottom of the split cutting section to complete the connection of the two, the guide section and the split cutting section are convenient to install and disassemble, the guide section is convenient to replace, a rubber ring is sleeved on the threaded rod, the rubber ring is embedded in the rubber ring groove at the bottom of the guide section, and the rubber ring is extruded to play a sealing role and improve the firmness of the connection between the guide section and the split cutting section.

[0015] 2. The split cutting section is connected with the connecting section through the second mounting mechanism, specifically, the clamping block is inwardly extruded and located in the groove, the insertion rod at the top of the split cutting section is inserted into the insertion slot at the bottom of the connecting section, the clamping block is clamped into the clamping hole under the action of the spring restoring force as the insertion rod is continuously inserted into the insertion slot, and thus the connection between the split cutting section and the connecting section is completed.

[0016] 3、The guiding section of the utility model is conical structure, is located in the file point part, does not have cutting function. Play guiding file body gradually into the curved or narrow root canal, avoid the thin tip broken in the root canal, the cutting thread is arranged on the circumferential side of the cutting section, in the root canal preparation process, through the clockwise rotation, the cutting thread can effectively cut the dentin in the root canal, and the debris is guided outward along the thread, avoid the debris accumulation, reduce the cutting resistance, improve the cutting efficiency, the connecting section is cylindrical structure, the outside is provided with scale line, is used for indicating the depth of file tip into the root canal, help the doctor accurate control the range of root canal preparation;

[0017] 4、The file handle body side wall of the utility model is provided with count area, the count area is composed of a plurality of round coils, a side of each round coil is provided with a round groove, and a label is pasted in the round groove. After each use, the doctor can draw a mark in the corresponding round coil, record the use frequency, avoid the file broken due to excessive use, and also tear the label of the corresponding round groove, avoid that the mark is not obvious or the mark is covered by dust, so that the use frequency is recorded wrong. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, the drawings needed to be used in the embodiment description of the utility model will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0019] Figure 1 It is the front view provided by the utility model;

[0020] Figure 2 It is the structural schematic view provided by the utility model;

[0021] Figure 3 It is the enlarged schematic view of A part provided by the utility model;

[0022] Figure 4 It is the enlarged schematic view of B part provided by the utility model;

[0023] Figure 5 It is the structural schematic view of the telescopic spring mechanism provided by the utility model;

[0024] Explanation of reference signs:

[0025] 1, file handle; 11, file handle head; 12, file handle body; 121, round coil; 2, file body; 21, split cutting section; 211, cutting thread; 22, guide section; 23, connecting section; 231, scale line; 3, label; 4, round groove; 5, first mounting mechanism; 51, threaded hole; 52, threaded rod; 53, rubber ring groove; 54, rubber ring; 6, second mounting mechanism; 61, clamping hole; 62, insertion slot; 63, clamping block; 64, telescopic spring mechanism; 641, horizontal groove; 642, spring; 643, fixed rod; 644, movable rod; 65, recess; 66, insertion rod. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application will be described in detail with reference to the drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] The terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application or the above description of the drawings are used to distinguish different objects, not to describe a specific order.

[0028] Please refer to Figures 1-5 A novel anti-breaking nickel-titanium file, comprising a file handle 1 and a file body 2, the file body 2 is installed at the bottom of the file handle 1, the file body 2 comprises a connecting section 23, a guide section 22 and a split cutting section 21, the connecting section 23 is a cylindrical structure, the connecting section 23 is provided with scale lines 231 on the outside, which is used to indicate the depth of the file tip into the root canal, helping doctors to accurately control the range of root canal preparation, the connecting section 23 is fixedly arranged at the bottom of the file handle 1, the guide section 22 is detachably installed at the bottom of the split cutting section 21, the split cutting section 21 is provided with cutting threads 211 on the periphery, the split cutting section 21 is provided with cutting threads 211, during the root canal preparation process, by rotating clockwise, the cutting threads 211 can effectively cut the dentin in the root canal, and the debris is guided outward along the thread, avoiding the accumulation of debris and reducing the cutting resistance, improving the cutting efficiency. The guide section 22 is a conical structure, located at the file tip part, without cutting function, the guide section 22 can guide the file body to gradually enter the curved or narrow root canal, avoiding the breaking of the thin tip in the root canal.

[0029] The top of the cutting section 21 is connected with the connecting section 23 through the second mounting mechanism 6, the second mounting mechanism 6 comprises a plug rod 66 fixedly arranged at the top of the cutting section 21, the bottom of the connecting section 23 is provided with a plug groove 62, the plug rod 66 is detachably inserted and arranged in the plug groove 62, the two sides of the connecting section 23 are respectively provided with clamping holes 61 communicated with the plug groove 62, the two sides of the plug rod 66 are respectively provided with recesses 65, a plurality of telescopic spring mechanisms 64 are fixedly arranged on the inner wall of the recess 65, and a clamping block 63 is arranged in the recess 65 and fixedly connected with the telescopic spring mechanism 64.

[0030] The telescopic spring mechanism 64 comprises a fixed rod 643, one end of the fixed rod 643 is fixedly arranged on the inner wall of the recess 65, the other end of the fixed rod 643 is provided with a horizontal groove 641, a movable rod 644 is movably inserted in the horizontal groove 641, one end of the movable rod 644 is fixedly connected with a spring 642 fixedly arranged on the inner wall of the horizontal groove 641, and the other end of the movable rod 644 is fixedly connected with the clamping block 63. The cutting section 21 is connected with the connecting section 23 through the second mounting mechanism 6, specifically, the clamping block 63 is inwardly extruded and located in the recess 65, the plug rod 66 at the top of the cutting section 21 is inserted into the plug groove 62 at the bottom of the connecting section 23, along with the plug rod 66 being continuously inserted into the plug groove 62, the clamping block 63 is clamped into the clamping hole 61 under the action of the restoring force of the spring 642, so that the connection between the cutting section 21 and the connecting section 23 is completed, and the cutting section 21 and the connecting section 23 are convenient to mount and dismount.

[0031] As an improvement of the above technical scheme, the file handle 1 comprises a file handle head 11 and a file handle body 12, the file handle head 11 is fixedly mounted with the root canal preparation mobile phone, and a counting area is arranged on the side wall of the file handle body 12, the counting area comprises a plurality of circular coils 121, the circular coils 121 are arranged in the longitudinal direction on the outer wall of the file handle body 12, and the circular coils 121 are provided in ten numbers, the side wall of the file handle body 12 is provided with a counting area, the counting area is composed of a plurality of circular coils 121, one side of each circular coil 121 is provided with a circular groove 4, and a label 3 is attached in the circular groove 4. After each use, the doctor can draw a mark in the corresponding circular coil 121 to record the number of uses, so that the file is not broken due to overuse, one side of each circular coil 121 is provided with a circular groove 4, and the label 3 is attached in each circular groove 4, and the label 3 in the corresponding circular groove 4 is also torn off, so that the mark is not obvious or the mark is covered by dust, and the number of uses is not mistaken.

[0032] As the improvement of the above technical scheme, the guide section 22 is connected with the split cutting section 21 through the first mounting mechanism 5, the split cutting section 21 comprises a threaded rod 52, the threaded rod 52 is fixedly arranged at the top of the guide section 22, the bottom of the split cutting section 21 is provided with a threaded hole 51, the guide section 22 is screwed into the threaded hole 51 through the threaded rod 52 to complete the installation of the split cutting section 21, the guide section 22 is connected with the split cutting section 21 through the first mounting mechanism 5, specifically, the threaded rod 52 at the top of the guide section 22 is screwed into the threaded hole 51 at the bottom of the split cutting section 21 to complete the connection of the two, the guide section 22 and the split cutting section 21 are convenient to install and disassemble, a rubber ring 54 is sleeved on the threaded rod 52, a rubber ring groove 53 is arranged at the bottom of the guide section 22, the rubber ring 54 is matched with the rubber ring groove 53, the rubber ring groove 53 is communicated with the threaded hole 51, the rubber ring 54 is sleeved on the threaded rod 52 and embedded in the rubber ring groove 53 at the bottom of the guide section 22, the rubber ring is extruded to play a sealing role and improve the firmness of the connection between the guide section 22 and the split cutting section 21.

[0033] The working principle and use method of the utility model:

[0034] In use, the guide section 22 is connected with the split cutting section 21 through the first mounting mechanism 5, specifically, the threaded rod 52 at the top of the guide section 22 is screwed into the threaded hole 51 at the bottom of the split cutting section 21 to complete the connection of the two, the guide section 22 and the split cutting section 21 are convenient to install and disassemble, the guide section 22 is convenient to replace, the tip of the file body with a relatively thin size is designed as a non-cutting threaded conical guide section 22 to highlight the "guiding" function in the curved or narrow root canal, and the cutting function is left to the relatively thick split cutting section 21 connected with the guide section 22, the model of the guide section 22 is gradually adjusted for deep cutting until the root canal is completely cut, for example, the guide section 22 with a 5mm file is used for preparation until the working length, then the guide section with a 4mm, 3mm, 2mm and 1mm file is used for root canal preparation, each time the working length is prepared, a rubber ring 54 is sleeved on the threaded rod 52 and embedded in the rubber ring groove 53 at the bottom of the guide section 22, the rubber ring is extruded to play a sealing role and improve the firmness of the connection between the guide section 22 and the split cutting section 21, and the split cutting section 21 is connected with the connecting section 23 through the second mounting mechanism 6.

[0035] Specifically, the inwardly extruded clamping block 63 is located in the groove 65, the insertion rod 66 at the top of the split cutting section 21 is inserted into the insertion slot 62 at the bottom of the connecting section 23, and as the insertion rod 66 is continuously inserted into the insertion slot 62, the clamping block 63 is clamped into the clamping hole 61 under the restoring force of the spring 642, thereby completing the connection of the split cutting section 21 and the connecting section 23. The split cutting section 21 and the connecting section 23 are easy to install and disassemble. In the root canal preparation process, the part of the split cutting section 21 in contact with the dentin and cutting is more prone to wear or damage. After adopting the detachable design, when the split cutting section 21 needs to be replaced due to wear or damage, the entire file does not need to be replaced, only the split cutting section 21 needs to be replaced, thereby greatly reducing the use cost. The guide section 22 is a conical structure located at the file tip portion and does not have cutting function. The guide section 22 can guide the file body to gradually enter the curved or narrow root canal, avoiding the breakage of the relatively thin tip portion in the root canal.

[0036] The split cutting section 21 is provided with a cutting thread 211 on the lateral side. During the root canal preparation process, the cutting thread 211 can effectively cut the dentin in the root canal by rotating clockwise, and the debris is guided outward along the thread, avoiding the accumulation of debris and reducing the cutting resistance, thereby improving the cutting efficiency. The connecting section 23 is a cylindrical structure provided with scale lines 231 on the outside for indicating the depth of the file tip entering the root canal, helping the doctor to accurately control the range of root canal preparation. The file handle 1 includes a file handle head 11 and a file handle body 12. The lateral wall of the file handle body 12 is provided with a counting area composed of a plurality of circular coils 121. Each circular coil 121 is provided with a circular groove 4 on one side, and a label 3 is pasted in the circular groove 4. After each use, the doctor can draw a mark in the corresponding circular coil 121 to record the number of uses, avoiding the breakage of the file due to overuse. At the same time, the label 3 in the corresponding circular groove 4 is also torn off, avoiding the fact that the mark is not obvious or the mark is covered by dust, which leads to incorrect recording of the number of uses.

[0037] During the root canal preparation process, the doctor first installs the file handle 1 on the root canal preparation handpiece, selects the appropriate length of the guide section 22 according to the specific situation of the root canal, and installs it on the split cutting section 21. Subsequently, the file body is inserted into the root canal, the guide section 22 is used to guide the file body into the root canal, the root canal preparation handpiece is started, the cutting thread 211 of the split cutting section 21 starts to cut the dentin, and the preparation depth is controlled through the scale lines 231 on the connecting section 23. After each use, the number of uses is recorded through the circular coils 121 on the file handle body 12.

[0038] The above merely aims to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features therein; any equivalent structure or equivalent process conversion made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A new style of non-fracturing nickel titanium file, characterized in that: The file includes the file handle (1) and the file body (2), the file body (2) is installed at the bottom of the file handle (1), the file body (2) includes the connecting section (23), the guide section (22) and the cutting section (21), the connecting section (23) is fixedly arranged at the bottom of the file handle (1), the bottom of the cutting section (21) is detachably installed with the guide section (22), the cutting section (21) is provided with cutting thread (211) on the circumferential side, the guide section (22) is a conical structure, located in the file tip part, the top of the cutting section (21) is connected with the connecting section (23) through the second mounting mechanism (6), the second mounting mechanism (6) includes the plug rod (66), the plug rod (66) is fixedly arranged on the top of the cutting section (21), the bottom of the connecting section (23) is provided with the insertion slot (62), and the plug rod (66) is detachably inserted and installed in the insertion slot (62).

2. A new type of breakage-proof nickel titanium file according to claim 1, characterized in that: The two sides of the connecting section (23) are respectively provided with the clamping hole (61), the clamping hole (61) is communicated with the insertion slot (62), the two sides of the plug rod (66) are respectively provided with the recess (65), a plurality of telescopic spring mechanisms (64) are fixedly arranged on the inner wall of the recess (65), the recess (65) is provided with the clamping block (63), and the telescopic spring mechanism (64) is fixedly connected with the clamping block (63).

3. A new type of breakage-proof nickel titanium file according to claim 2, characterized in that: The telescopic spring mechanism (64) includes the fixed rod (643), one end of the fixed rod (643) is fixedly arranged on the inner wall of the recess (65), the other end of the fixed rod (643) is provided with the horizontal slot (641), the horizontal slot (641) movably inserts the movable rod (644), one end of the movable rod (644) is fixedly connected with the spring (642), the spring (642) is fixedly arranged on the inner wall of the horizontal slot (641), and the other end of the movable rod (644) is fixedly connected with the clamping block (63).

4. A new type of breakage-proof nickel titanium file according to claim 1, characterized in that: The file handle (1) includes the file handle head (11) and the file handle body (12), the file handle head (11) is fixedly installed with the root canal preparation mobile phone, and the side wall of the file handle body (12) is provided with a counting area.

5. A new type of breakage-proof nickel titanium file according to claim 4, characterized in that: The counting area includes a plurality of circular coils (121), and the circular coils (121) are longitudinally arranged on the outer wall of the file handle body (12).

6. A new type of breakage-proof nickel titanium file according to claim 1, characterized in that: The circular coil (121) is provided with ten circular grooves (4) on one side, and a label (3) is attached in each circular groove (4).

7. A new type of breakage-proof nickel titanium file according to claim 1, characterized in that: The connecting section (23) is a cylindrical structure, and the outer side of the connecting section (23) is provided with a scale line (231). The guide section (22) is connected with the cutting section (21) through the first mounting mechanism (5), the cutting section (21) includes a threaded rod (52), the threaded rod (52) is fixedly arranged on the top of the guide section (22), the bottom of the cutting section (21) is provided with a threaded hole (51), and the guide section (22) is screwed into the threaded hole (51) through the threaded rod (52) to complete the installation of the cutting section (21).

8. A new type of breakage-proof nickel titanium file according to claim 7, characterized in that: A rubber ring (54) is sleeved on the threaded rod (52), a bottom of the guide section (22) is provided with a rubber ring groove (53), the rubber ring (54) is matched with the rubber ring groove (53), and the rubber ring groove (53) is communicated with the threaded hole (51).

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