Stress interruptable dental elevator

Abstract

The application discloses a stress-interruptable dental elevator, and relates to the technical field of dental elevators, which comprises an elevator blade part, one end of the elevator blade part being used for contacting a tooth; an elevator rod, the elevator rod being used for being connected with a handheld device; a stress deformation structure, the stress deformation structure being arranged between the elevator blade part and the elevator rod to connect the elevator blade part and the elevator rod, the stress deformation structure having a stress limit value, and the stress deformation structure being capable of being deformed to change the connection state between the elevator blade part and the elevator rod when the bending stress between the elevator blade part and the elevator rod exceeds the stress limit value. The stress-interruptable dental elevator can limit the maximum stress transmitted to adjacent tissue structures, and effectively reduces the damage of adjacent teeth or alveolar bone caused by erroneous violent tooth extraction.

Description

Technical Field

[0001] This invention relates to the field of dental elevator technology, and in particular to a dental elevator that can be stress-interrupted. Background Technology

[0002] Damage to adjacent teeth is a serious complication of tooth extraction, manifesting as loosening, dislocation, or fracture of normally adjacent teeth. This damage is often caused by a combination of objective and subjective factors. The former includes impaction of the extracted tooth and close contact with adjacent teeth, while the latter includes various inappropriate surgical procedures, such as forceful extraction that incorrectly transfers force to adjacent teeth. While the inherent difficulty of extracting the tooth cannot be altered, the subjective factor of the surgeon's technique can be mitigated.

[0003] With advancements in medicine, in addition to high-quality medical services, a positive patient experience is also crucial. Minimally invasive tooth extraction emphasizes reducing trauma from all angles. Excessive force during extraction can cause both physical and psychological trauma, creating a negative association with tooth extraction. Doctors require a long period of professional development; skill improvement requires accumulation. Tooth extraction is complex and varied, difficult to simulate externally. Besides theoretical learning, doctors progress primarily through continuous clinical practice.

[0004] A dental elevator is a tool used for tooth extraction. It is used to loosen a tooth before extraction to facilitate its removal. When using a dental elevator, the blade contacts the tooth and uses leverage to loosen it. Inexperienced dentists are prone to improper operation during extractions, using excessive force and damaging adjacent teeth or surrounding bone tissue. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a stress-interruptible dental elevator that can limit the maximum stress transmitted to adjacent tissue structures, effectively reducing damage to adjacent teeth or alveolar bone caused by erroneous and forceful tooth extraction.

[0006] According to an embodiment of the present invention, a stress-interruptible dental elevator includes: an elevator blade portion, one end of which is used to contact a tooth;

[0007] A lever for connection to a handheld device;

[0008] A stress-deformation structure is disposed between the cutting edge and the push rod to connect the cutting edge and the push rod. The stress-deformation structure has a stress limit. When the bending stress between the cutting edge and the push rod exceeds the stress limit, the stress-deformation structure can deform to change the connection state between the cutting edge and the push rod.

[0009] The stress-interruptible dental elevator according to embodiments of the present invention has at least the following beneficial effects: the elevator rod is connected to a handheld device, allowing the dentist to use the elevator flexibly and bring the blade of the elevator into contact with the affected tooth; when the blade of the elevator contacts the affected tooth, the stress exerted by the dentist on the elevator rod is generally within the limit range of the stress deformation structure. When the stress exceeds the limit of the stress deformation structure, i.e., the dentist applies too much force, the stress deformation structure deforms, changing the connection state between the blade of the elevator and the elevator rod. The dental elevator can no longer be used, and it also reminds the dentist that too much force has been applied, thus protecting adjacent teeth or surrounding bone tissue from damage.

[0010] According to some embodiments of the present invention, the cutting edge is disposed at one end of the push rod, and the stress deformation structure includes an arc-shaped opening disposed at one end of the push rod near the cutting edge, the arc-shaped opening causing the cross-sectional area of ​​the push rod to decrease at that location.

[0011] According to some embodiments of the present invention, two arc-shaped openings are provided, and the arc-shaped openings are symmetrically arranged on the rod body of the push rod with the central axis of the push rod as the axis of symmetry.

[0012] According to some embodiments of the present invention, the stress deformation structure includes a movable connecting device and a stress collar. The cutting edge and the push rod are connected by the movable connecting device. The stress collar is fitted onto the movable connecting device, and one end of the stress collar is fixed to the cutting edge and the other end is fixed to the push rod to restrict the relative rotation of the cutting edge and the push rod. The stress collar has a stress limit value, and exceeding the stress limit value can cause the stress collar to fail.

[0013] According to some embodiments of the present invention, the movable connecting device includes a hinge shaft, the cutting edge and the push rod are hinged together by the hinge shaft, the hinge shaft is parallel to the cutting surface of the cutting edge, so that the cutting edge and the push rod can be bent perpendicular to the cutting surface, and the stress collar is fitted at the hinge shaft.

[0014] According to some embodiments of the present invention, the movable connection device includes a universal ball joint, which is connected between the tappet and the tappet rod, and the stress collar is fitted onto the universal ball joint.

[0015] According to some embodiments of the present invention, one end of the stress collar is provided with a first thread, and the end of the push rod near the movable connecting device is provided with a second thread. The stress collar is fitted onto the movable connecting device such that the first thread and the second thread are engaged and connected. The stress collar has an end opposite to the first thread extending to the push blade portion to restrict the movement of the push blade portion.

[0016] According to some embodiments of the present invention, one end of the stress collar is provided with a deformable buckle, and the end of the push rod near the movable connecting device is provided with an annular groove. The stress collar is fitted onto the movable connecting device so that the buckle is engaged in the groove, and the opposite end of the stress collar with the buckle extends to the push blade portion to restrict the movement of the push blade portion.

[0017] According to some embodiments of the present invention, a handle is also provided, and the end of the push rod away from the push blade is detachably connected to the handle.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a stress-interruptible dental elevator according to an embodiment of the present invention;

[0021] Figure 2 This is an enlarged structural diagram of the arc-shaped opening in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the stress collar fitted onto the movable connecting device in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure when installing the stress collar in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure in an embodiment of the present invention where the cutting edge and the push rod bend when a hinge shaft is used;

[0025] Figure 6 This is a schematic diagram showing the bending of the tappet and the tappet rod when using a universal ball joint in an embodiment of the present invention;

[0026] Figure 7 This is an enlarged schematic diagram of the universal ball joint structure in an embodiment of the present invention.

[0027] Icon labels:

[0028] The components include: a cutting edge 100, a push rod 200, a stress deformation structure 300, an arc-shaped opening 310, a movable connecting device 320, a hinge shaft 321, a universal ball joint 322, a stress collar 330, and a handle 400. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0032] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0033] Reference Figure 1 As shown, a stress-interruptible dental elevator according to an embodiment of the present invention includes a blade portion 100, one end of which is used to contact a tooth.

[0034] Taper 200, used for connection to handheld device;

[0035] A stress-deformation structure 300 is disposed between the cutting edge 100 and the push rod 200 to connect the cutting edge 100 and the push rod 200. The stress-deformation structure 300 has a stress limit. When the bending stress between the cutting edge 100 and the push rod 200 exceeds the stress limit, the stress-deformation structure 300 can deform to change the connection state between the cutting edge 100 and the push rod 200.

[0036] The elevator 200 is connected to a handheld device. The dentist holds the device and can use the elevator flexibly, bringing the blade 100 into contact with the affected tooth. When the blade 100 contacts the affected tooth and the elevator 200 abuts against the adjacent tooth, a lever is formed. The dentist uses the adjacent tooth as a fulcrum, applying bending stress to the elevator 200, causing the blade 100 to loosen the affected tooth. The stress applied by the dentist to the elevator 200 is generally within the limit range of the stress deformation structure 300 (the limit of the stress deformation structure 300 can be determined during design and production). When the stress exceeds the limit of the stress deformation structure 300, i.e., the dentist applies too much force, the stress deformation structure 300 deforms, changing the connection between the blade 100 and the elevator 200. The elevator becomes unusable, and the dentist is alerted to excessive force, thus protecting the adjacent tooth or surrounding bone tissue from damage.

[0037] Reference Figure 2 As shown, it can be understood that the cutting edge 100 is located at one end of the push rod 200, and the stress deformation structure 300 includes an arc-shaped opening 310. The arc-shaped opening 310 is located at one end of the push rod 200 near the cutting edge 100, and the arc-shaped opening 310 makes the cross-sectional area of ​​the push rod 200 at that location smaller.

[0038] The arc-shaped opening 310 reduces the cross-sectional area of ​​the push rod 200, thereby reducing the bending resistance of the push rod 200. By controlling the size of the arc-shaped opening 310, the stress limit of the push rod 200 can be controlled. When the bending stress between the push rod 200 and the blade 100 reaches the limit, bending will occur at the arc-shaped opening 310, indicating that the doctor has applied too much force.

[0039] It is understandable that there are two arc-shaped openings 310, which are symmetrically arranged on the body of the push rod 200 with the central axis of the push rod 200 as the axis of symmetry.

[0040] The arc-shaped openings 310 are symmetrically distributed on the rod body of the tappet 200, so that the bending resistance of the arc-shaped openings 310 is consistent in all directions. This avoids the situation where, under the same stress, the tappet can bend the tappet blade 100 and the tappet 200 when used in the forward direction, but cannot bend the tappet blade 100 and the tappet 200 when used in the reverse direction.

[0041] Reference Figure 3 As shown, it can be understood that the stress deformation structure 300 includes a movable connecting device 320 and a stress collar 330. The cutting edge 100 and the push rod 200 are connected by the movable connecting device 320. The stress collar 330 is fitted onto the movable connecting device 320, with one end of the stress collar 330 fixed to the cutting edge 100 and the other end fixed to the push rod 200 to restrict the relative rotation of the cutting edge 100 and the push rod 200. The stress collar 330 has a stress limit, and exceeding the stress limit can cause the stress collar 330 to fail.

[0042] The movable connecting device 320 allows free rotation between the tappet 100 and the tappet 200. A stress collar 330 restricts this rotation. Before using the dental elevator, the tappet 200 and tappet 100 are kept coaxial. The stress collar 330 is then fitted onto the movable connecting device 320, with one end fixed to the tappet 100 and the other end fixed to the tappet 200. This ensures that the tappet 200 and tappet 100 remain coaxial and cannot rotate relative to each other. If the dentist applies excessive force during elevator operation, exceeding the stress limit of the stress collar 330, the stress collar 330 will break and become ineffective. The tappet 100 and tappet 200 will then be able to rotate freely again, rendering the elevator unusable and alerting the dentist that excessive force has been applied.

[0043] Reference Figure 4 and Figure 5 As shown, it can be understood that the movable connection device 320 includes a hinge shaft 321, and the cutting edge 100 and the push rod 200 are hinged together by the hinge shaft 321. The hinge shaft 321 is parallel to the cutting surface of the cutting edge 100, so that the cutting edge 100 and the push rod 200 can be bent perpendicular to the cutting surface. The stress collar 330 is fitted on the hinge shaft 321.

[0044] When using a dental elevator, the cutting edge of the elevator 100 is inserted into the affected tooth, and then the elevator rod 200, supported by adjacent teeth, applies force in a direction perpendicular to the cutting edge to loosen the affected tooth. Therefore, the hinge shaft 321 is parallel to the cutting edge, meaning that the elevator 100 and elevator rod 200 can be bent perpendicular to the cutting edge, suitable for most routine operations. The stress collar 330 maintains the elevator 100 and elevator rod 200 within a limited stress range, preventing them from bending. However, if the stress in the direction perpendicular to the cutting edge (the routine operating direction of the dental elevator) is too high, the stress collar 330 will be damaged.

[0045] Reference Figure 6 and Figure 7 As shown, it can be understood that the movable connection device 320 includes a universal ball joint 322, which is connected between the tappet 100 and the tappet 200, and the stress collar 330 is fitted onto the universal ball joint 322.

[0046] Because the location of the affected tooth varies, the operation method and difficulty of loosening the affected tooth using a dental elevator are different. In some cases, when operating the dental elevator, the bending force of the elevator blade 100 and the elevator rod 200 is not perpendicular to the blade surface of the elevator blade 100. Therefore, if the force is too large in this direction, it may not cause the stress collar 330 to be damaged and thus fail to protect the adjacent tooth.

[0047] After the universal ball joint 322 is installed between the cutting edge 100 and the push rod 200, the cutting edge 100 and the push rod 200 can rotate in any direction. Therefore, the stress collar 330 can limit the stress magnitude to protect the adjacent teeth from stress within a safe range. If the stress exceeds the range, the stress collar 330 can be effectively destroyed.

[0048] Reference Figure 4 As shown, it can be understood that the inner wall of one end of the stress collar 330 is provided with a first thread, and the end of the push rod 200 near the movable connecting device 320 is provided with a second thread. The stress collar 330 is fitted onto the movable connecting device 320 so that the first thread and the second thread are engaged and connected. The opposite end of the stress collar 330 with the first thread extends to the push blade portion 100 to restrict the movement of the push blade portion 100.

[0049] The stress collar 330 is inserted from the tappet 100 and moved to the movable connecting device 320. Then, the first thread on the stress collar 330 is engaged with the second thread on the tappet 200 to fix the stress collar 330. One end of the stress collar 330 is at the tappet 200 and the other end is at the tappet 100 to restrict the rotation between the tappet 200 and the tappet 100.

[0050] Understandably, the inner wall of one end of the stress collar 330 is provided with a deformable buckle, and the end of the push rod 200 near the movable connecting device 320 is provided with a ring-shaped groove. The stress collar 330 is fitted onto the movable connecting device 320, so that the buckle is engaged in the groove. The opposite end of the stress collar 330 with the buckle extends to the push blade 100 to restrict the movement of the push blade 100.

[0051] The stress collar 330 is inserted from the tappet 100 and moved to the movable connecting device 320. Then, the buckle on the stress collar 330 is engaged with the groove on the tappet 200 to fix the stress collar 330. One end of the stress collar 330 is at the tappet 200 and the other end is at the tappet 100 to restrict the rotation between the tappet 200 and the tappet 100.

[0052] Understandably, a handle 400 is also provided, and the end of the push rod 200 away from the push blade 100 is detachably connected to the handle 400.

[0053] The elevator 200 is inserted into the handle 400 to facilitate the dentist's grip on the elevator for manipulation of the affected tooth. If the dentist applies excessive force and the elevator 200 and the blade 100 bend or deform, the elevator can be easily removed from the handle 400 and a new elevator can be installed for continued use.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A stress-interruptible dental elevator, characterized in that, include: A cutting edge (100), one end of which is used to contact a tooth; A push rod (200) for connection to a handheld device; A stress-deformation structure (300) is disposed between the cutting edge (100) and the push rod (200) to connect the cutting edge (100) and the push rod (200). The stress-deformation structure (300) has a stress limit. If the bending stress between the cutting edge (100) and the push rod (200) exceeds the stress limit, the stress-deformation structure (300) can deform to change the connection state between the cutting edge (100) and the push rod (200). The blade portion (100) is disposed at one end of the push rod (200), and the stress deformation structure (300) includes an arc-shaped opening (310). The arc-shaped opening (310) is disposed at one end of the push rod (200) near the blade portion (100), and the arc-shaped opening (310) makes the cross-sectional area of ​​the push rod (200) smaller at that location. Alternatively, the stress deformation structure (300) includes a movable connecting device (320) and a stress collar (330). The cutting edge (100) and the push rod (200) are connected by the movable connecting device (320). The stress collar (330) is fitted onto the movable connecting device (320), with one end of the stress collar (330) fixed to the cutting edge (100) and the other end fixed to the push rod (200) to restrict the relative rotation of the cutting edge (100) and the push rod (200). The stress collar (330) has a stress limit, and exceeding the stress limit can cause the stress collar (330) to fail.

2. The stress-interruptible dental elevator according to claim 1, characterized in that: When the stress deformation structure (300) includes an arc-shaped opening (310), there are two arc-shaped openings (310), and the arc-shaped openings (310) are symmetrically arranged on the rod body of the push rod (200) with the central axis of the push rod (200) as the axis of symmetry.

3. The stress-interruptible dental elevator according to claim 1, characterized in that: When the stress deformation structure (300) includes a movable connecting device (320) and a stress collar (330), the movable connecting device (320) includes a hinge shaft (321), the cutting edge (100) and the push rod (200) are hinged together by the hinge shaft (321), the hinge shaft (321) is parallel to the cutting edge of the cutting edge (100), so that the cutting edge (100) and the push rod (200) can be bent perpendicular to the cutting edge, and the stress collar (330) is fitted onto the hinge shaft (321).

4. The stress-interruptible dental elevator according to claim 1, characterized in that: When the stress deformation structure (300) includes a movable connection device (320) and a stress collar (330), the movable connection device (320) includes a universal ball joint (322), the universal ball joint (322) is connected between the tappet (100) and the tappet (200), and the stress collar (330) is fitted onto the universal ball joint (322).

5. The stress-interruptible dental elevator according to claim 1, characterized in that: When the stress deformation structure (300) includes a movable connecting device (320) and a stress collar (330), the inner wall of one end of the stress collar (330) is provided with a first thread, and the end of the push rod (200) near the movable connecting device (320) is provided with a second thread. The stress collar (330) is fitted onto the movable connecting device (320) so that the first thread and the second thread are engaged and connected. The opposite end of the stress collar (330) of the first thread extends to the push blade portion (100) to restrict the movement of the push blade portion (100).

6. The stress-interruptible dental elevator according to claim 1, characterized in that: When the stress deformation structure (300) includes a movable connecting device (320) and a stress collar (330), one end of the inner wall of the stress collar (330) is provided with a deformable buckle, and the end of the push rod (200) near the movable connecting device (320) is provided with an annular groove. The stress collar (330) is fitted onto the movable connecting device (320) so that the buckle is engaged in the groove, and the opposite end of the stress collar (330) with the buckle extends to the push blade (100) to restrict the movement of the push blade (100).

7. The stress-interruptible dental elevator according to any one of claims 1 to 6, characterized in that: It also has a handle (400), and the end of the push rod (200) away from the push blade (100) is detachably connected to the handle (400).

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