Tooth extraction device for laboratory mice

Abstract

The application discloses a tooth extraction device for experimental mice, and relates to the technical field of medical devices, and aims to solve the technical problem that the above-mentioned device is not specially set for tooth extraction of the tooth structure of experimental mice, which is not conducive to doctors to simulate the clinical disease occurrence process and analyze the cause of the disease by performing tooth extraction operation on experimental mice. The tooth extraction device comprises a pulling device, a tooth elevator and tooth forceps. The tooth forceps comprise a clamping arm, a connecting part and a clamping head arranged in sequence. The clamping head adopts a curved double-arm structure, and the clamping head is curved towards the center of the tooth forceps. The double-arm structure comprises a first arm parallel to the clamping arm. A second arm is arranged at the first arm. An included angle is formed between the first arm and the second arm. In use, the first arm is in contact with the root bifurcation of the molar, the second arm is in cooperation with the distal molar, and clamping parts are arranged on the sides of the first arm and the second arm in contact with the molar. The tooth extraction device is provided with the first arm, the second arm and other structures, is suitable for the tooth anatomical structure of experimental mice, can completely extract the teeth of experimental mice, and can be used for related basic experimental research.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a tooth extraction device for laboratory mice. Background Technology

[0002] Tooth extraction models are a common experimental model in oral surgery. Constructing biological models of oral diseases by extracting teeth from mice and rats and conducting related basic research is an important part of oral surgery research. The construction of tooth extraction-related oral disease models plays an important role in understanding the pathogenesis of oral diseases and formulating prevention and treatment strategies.

[0003] Mice and rats, bred for dental research, are the preferred experimental animals for tooth extraction studies due to their similar wound healing process to humans, short reproductive cycles, and clear genetic backgrounds. While conventional surgical tools such as tooth picks can be used to assist in tooth extraction in mice and rats, the complex anatomy of their teeth, with differences between the upper and lower jaws, means that existing tools are not perfectly suited to their structure. This often leads to problems such as root breakage, resulting in unremovable teeth, excessive oral bleeding, and even death. This not only hinders dentists' analysis of the causes of oral diseases but also results in the loss of laboratory mice. Summary of the Invention

[0004] This invention discloses a tooth extraction device for laboratory mice, which aims to solve the technical problem mentioned above where there is no device specifically designed for tooth extraction of laboratory mice, which is not conducive to doctors performing tooth extraction operations on laboratory mice to simulate the clinical disease process and analyze the cause of the disease.

[0005] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0006] A tooth extraction device for laboratory mice includes a retractor, a dental elevator, and dental forceps. The dental forceps includes a forceps arm, a connecting part, and a forceps head arranged sequentially. The forceps head has a double-arm structure and a curved structure, with the forceps head curved towards the center of the forceps. The double-arm structure includes a first arm arranged parallel to the forceps arm, and a second arm is also provided at the first arm. An angle is formed between the first arm and the second arm. In use, the first arm contacts the bifurcation of the molar root, and the second arm engages distally with the molar. Both the first arm and the side of the second arm that contacts the molar are provided with clamping parts.

[0007] With this technical solution, the forceps' structure conforms to the anatomical characteristics of rat and mouse teeth. The first arm is positioned at the bifurcation of the molar root, primarily serving a clamping function, while the second arm encircles the distal part of the molar, its function being to embrace the tooth structure, thereby reducing the local stress on the tooth from breakage. The clamping part enhances the stability of the connection between the first and second arms and the tooth, thus improving the stability of the device in clamping the tooth and ensuring the stability of the extraction. Furthermore, due to the unique anatomy of the maxillary molars in rats and mice, with their large mesial roots oriented anteroinferiorly, the second arm's encirclement of the molar also provides an upward and posterior auxiliary rotation, facilitating complete extraction of the molar.

[0008] Preferably, the clamping part includes clamping teeth on the top surface of the bend of the first arm and the second arm, and the included angle between the first arm and the second arm is in the range of 90-100°.

[0009] By adopting this technical solution, the angle between the first and second arms is limited, and clamping teeth are set on the side of the first and second arms closest to the teeth. This setting is compatible with the anatomical structure of the teeth of mice and rats, and can stably contact the root and sidewall of the molar, fix the entire molar, and improve the stability of the forceps during tooth extraction.

[0010] Preferably, the puller includes a first handle portion, a connecting portion, and a first operating end connected in sequence. The vertical cross-section of the first operating end adopts a fan-shaped structure, and a light source is also provided inside the first operating end. The part of the first operating end opposite to the light source adopts a transparent structure.

[0011] After adopting this technical solution, the cross-section of the first operating end is set as a fan-shaped structure, that is, the first operating end is flat and the end is wide, which can easily enter the mouth of the mouse and rat and make as much contact as possible with the buccal tissue, pull open the buccal mucosa of the mouse and rat, and fully expose the field of vision near the tooth to be extracted. The photovoltaic setting can help to further expose the nearby field of vision and improve the accuracy of tooth extraction.

[0012] Preferably, the dental elevator adopts a slender rod-shaped structure, and the dental elevator includes a second operating end and a third handle portion. The thickness of the second operating end gradually decreases from one end near the third handle portion to the other end, and the thickness of the second operating end is 0.05-0.3mm, and the width is 0.3-1.2mm.

[0013] By adopting this technical solution, the dental elevator is designed as a slender rod-shaped structure, and the cross-section of the second operating end of the dental elevator is also limited to a fan-shaped structure. At the same time, the thickness and width of the second operating end are limited, which can be precisely inserted between the first and second molars or the second and third molars in the maxilla of mice and rats to loosen the molars of mice and rats and ensure the effectiveness of tooth extraction.

[0014] Preferably, the dental elevator and the dental forceps are slidably connected to the dental forceps via a connecting device. The dental forceps include a second handle portion disposed on the forceps arm, the second handle portion being rotatably connected to the forceps arm, and the connecting device being disposed on the side of the second handle portion away from the point of rotation of the forceps arm.

[0015] With this technical solution, the dental elevator and dental forceps are slidably connected through a connecting device. When the second handle rotates relative to the forceps arm, it can drive the dental elevator to extend or retract relative to the dental forceps, combining the dental forceps and dental elevator into one device. This can improve the efficiency of instrument switching during tooth extraction surgery, thereby increasing the speed of tooth extraction.

[0016] Preferably, the connecting device includes a first connecting rod whose two ends are rotatably connected to the second handle and the jaw elevator, respectively. The first connecting rod is bendable. The clamp arm is provided with an opening that cooperates with the first connecting rod. The clamp arm is also provided with a first sliding groove that cooperates with the jaw elevator. The opening is provided with a locking device that cooperates with the first connecting rod.

[0017] By adopting this technical solution, the opening and the first sliding groove ensure that the first connecting rod can slide smoothly in the sliding groove when the second handle rotates relative to the jaw arm, improving the smoothness of the device when using the dental elevator and dental clamp functions. Simultaneously, the locking device ensures the stability of the device when using the dental clamp and dental elevator functions, thereby improving the stability of the device during use.

[0018] Preferably, the locking device includes a locking tooth disposed on the opening, and a locking strip disposed on the first connecting rod that engages with the locking tooth, the locking strip being disposed on the side of the first connecting rod away from the center of the forceps.

[0019] By adopting this technical solution, the setting of the locking teeth and locking strips simplifies the way the first connecting rod is fixed relative to the second handle and the toothed rod, thereby simplifying the use of this device.

[0020] Preferably, the first arm and the second arm are connected by a telescopic device. The telescopic device includes a second connecting rod with one end rotatably connected to the first arm and the other end slidably connected to the second arm. The dental elevator is provided with a driving device that cooperates with the second connecting rod. The second arm is opened or closed relative to the first arm by sliding the dental elevator relative to the dental clamp.

[0021] By adopting this technical solution, a telescopic and driving mechanism is incorporated. The sliding of the dental elevator relative to the forceps allows the second arm to expand or close relative to the first arm, transforming the forceps head into a single-arm or double-arm structure. This allows for the extraction of molars from different mice and rats, enhancing the device's practicality. Furthermore, the direct sliding of the dental elevator drives the expansion of the second arm, reducing the need for a separate driving mechanism and simplifying the adjustment of the second arm, thus improving the efficiency of switching between the dental elevator and the forceps.

[0022] Preferably, the driving device includes a second sliding groove disposed on the dental elevator. A wedge block that engages with a second connecting rod is disposed on the side of the second sliding groove near the forceps head. The inclined surface of the wedge block is disposed on the side near the second arm, and a receiving groove for accommodating the second connecting rod is disposed on the inclined surface. The thickness of the wedge block gradually increases along the direction of the second connecting rod towards the forceps head. With this technical solution, when the dental elevator retracts into the forceps arm, it drives the wedge block to move towards the rotation point near the second connecting rod, driving the second connecting rod to rotate relative to the first arm. This causes the second arm to rotate and unfold relative to the first arm, forming a V-shaped structure with the first arm, hooking onto the root of the molar and simultaneously encircling the molar, facilitating extraction. The receiving groove allows the second connecting rod to be stored when the first and second arms are engaged, reducing the space occupancy of the device and enabling miniaturization to accommodate the anatomical structure of rat and mouse teeth.

[0023] Preferably, the second arm is provided with a third sliding groove that cooperates with the second connecting rod. A reset rod is rotatably disposed in the third sliding groove. The other end of the reset rod is rotatably connected to the second connecting rod, and the reset rod adopts a telescopic structure.

[0024] By adopting the technical solution, a reset rod and a third sliding groove are set up to further ensure the stability of the first and second arms when they contact the teeth. After disconnection, the first and second arms are automatically reset, which improves the convenience of using the device.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] (1) This device is equipped with a first arm and a second arm. The first arm is positioned at the bifurcation of the molar root and mainly serves as a support. The second arm encircles the distal part of the molar and its function is to encircle the tooth tissue, thereby reducing the local stress on the tooth caused by the extraction forceps and preventing breakage. The clamping part improves the stability of the connection between the first and second arms and the tooth, thereby improving the stability of the device in clamping the tooth and ensuring the stability of tooth extraction. At the same time, due to the special anatomy of the maxillary molars of mice and rats, the mesial root is thick and the direction is anteroinferiorly. Therefore, the second arm encircling the molar can also play a role in upward and backward auxiliary rotation, which can completely extract the molar and assist in the experimental operation related to tooth extraction in mice and rats, and analyze the etiology.

[0027] (2) Limit the angle between the first arm and the second arm, and set clamping teeth on the side of the first arm and the second arm that are close to the teeth. This setting is in line with the anatomical structure of the teeth of mice and rats, and can stably contact the root and side wall of the molar, fix the entire molar, and improve the stability of the forceps during tooth extraction.

[0028] (3) The dental elevator is set as a slender rod-shaped structure, and the cross-section of the second operating end of the dental elevator is also limited to a fan-shaped structure. At the same time, the thickness and width of the second operating end are limited, so that it can be accurately inserted between the first and second molars or the second and third molars of the upper jaw of mice and rats to loosen the molars of mice and rats and ensure the effect of tooth extraction.

[0029] (4) The dental elevator and dental forceps are slidably connected through a connecting device. When the second handle rotates relative to the forceps arm, it can drive the dental elevator to extend or retract relative to the dental forceps, combining the dental forceps and dental elevator into one device. This can improve the efficiency of instrument switching during tooth extraction surgery, thereby increasing the speed of tooth extraction.

[0030] (5) The opening and the first slide groove ensure that the first connecting rod can slide smoothly in the slide groove when the second handle rotates relative to the clamp arm, thus improving the smoothness of the device when using the dental elevator and dental clamp functions. At the same time, the locking device ensures the stability of the device when using the dental clamp and dental elevator functions, thereby improving the stability of the device during use.

[0031] (6) A telescopic and driving mechanism is provided, and the second arm can be extended or fitted relative to the first arm by sliding the dental elevator relative to the dental forceps, so that the forceps head can be transformed into a single-arm or double-arm structure, which can be used with different molars of mice and rats to extract the molars, thus improving the practicality of the device. At the same time, the extension of the second arm is directly driven by sliding the dental elevator, which reduces the need for a driving mechanism, simplifies the adjustment of the second arm, and helps to improve the efficiency of switching between the dental elevator and the dental forceps.

[0032] (7) The reset rod and the third slide groove are set to further ensure the stability of the first and second arms when they contact the teeth. After disconnection, the first and second arms are automatically reset, which improves the convenience of the device in use. Attached Figure Description

[0033] The present invention will be described by way of example and with reference to the accompanying drawings, wherein:

[0034] Figure 1 This is a three-dimensional structural diagram of a tooth extraction device for laboratory mice according to the present invention;

[0035] Figure 2 This is a schematic diagram of the disassembled structure of the tensioner;

[0036] Figure 3 A schematic diagram of the three-dimensional structure of a dental elevator;

[0037] Figure 4 This is a schematic diagram showing the positional structure of the dental elevator and dental forceps in Example 2;

[0038] Figure 5 for Figure 4Enlarged structural diagram at point A;

[0039] Figure 6 This is a schematic diagram of the structure of the first and second arms before they are deployed in Example 2;

[0040] Figure 7 This is a schematic diagram of the unfolded structure of the first and second arms in Example 2.

[0041] Figure Labels

[0042] 1-Pulley, 101-First handle, 102-First operating end, 103-Light source, 2-Ejector, 201-Third handle, 202-Anti-slip texture, 203-Second operating end, 204-Second slide groove, 205-Wedge block, 3-Ejector clamp, 301-Second handle, 302-Damping shaft, 303-Pulley arm, 304-Connection, 305-Opening, 306-First connecting rod, 307-Clamping strip, 308-Clamping tooth, 309-Telescopic rod, 310-Second arm, 3101-Third slide groove, 311-Clamping tooth, 312-First arm, 4-Second connecting rod, 5-Reset rod. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] The following is combined Figures 1-7 The present invention will be described in detail below.

[0046] Example 1

[0047] A tooth extraction device for laboratory mice, such as Figures 1-3 As shown, the device includes a puller 1, an elevator 2, and a forceps 3. The forceps 3 includes a forceps arm 303, a connecting part 304, and a forceps head arranged sequentially. The forceps head has a double-arm structure and a curved structure. The forceps head is curved toward the center of the forceps 3. The double-arm structure includes a first arm 312 arranged parallel to the forceps arm 303. A second arm 310 is also provided at the first arm 312. An angle is formed between the first arm 312 and the second arm 310. In use, the first arm 312 contacts the bifurcation of the molar root, and the second arm 310 engages with the distal part of the molar. Both the first arm 312 and the second arm 310 have clamping parts on the side that contacts the molar.

[0048] In this embodiment, both the dental elevator 2 and the dental forceps 3 are made of stainless steel, which is corrosion-resistant, abrasion-resistant, and has high biocompatibility, and can be reused after disinfection.

[0049] In this embodiment, the angle at which the pliers head bends toward the center of the dental pliers 3 is 120-140°, which can be set according to the condition of the molars, such as 120°, and preferably 90°.

[0050] In this embodiment, the connection 304 adopts the existing rotating structure of the dental clamp 3, that is, a structure similar to the rotating structure of scissors, which will not be described in detail here.

[0051] In this embodiment, the dental clamps 3 include a second handle portion 301.

[0052] In this embodiment, the first arm 312 and the second arm 310 are rotatably connected by a ball joint. The ball joint is existing technology and will not be described in detail here. In other embodiments, other connection methods can be used, such as a hinged connection.

[0053] In this embodiment, the clamping part includes clamping teeth 311 provided on the top surface of the bending part of the first arm 312 and the second arm 310, and the included angle between the first arm 312 and the second arm 310 is in the range of 90-100°.

[0054] In this embodiment, the thickness of the first arm 312 and the second arm 310 are equal.

[0055] In this embodiment, the included angle range is 90-100°, and different angles, such as 90° and 100°, can be set according to the molar condition of mice and rats.

[0056] In this embodiment, the puller 1 includes a first handle part 101, a connecting part and a first operating end 102 connected in sequence. The vertical cross section of the first operating end 102 adopts a fan-shaped structure. A light source 103 is also provided in the first operating end 102. The part of the first operating end 102 opposite to the light source adopts a transparent structure.

[0057] In this embodiment, the first operating end 102 opposite to the light source can be made of a material such as transparent silicone to achieve light transmission.

[0058] In this embodiment, apart from the transparent silicone part, the rest of the puller 1 is made of stainless steel, which can be sterilized at high temperature along with the dental elevator 2 and dental forceps 3.

[0059] In this embodiment, the first handle portion 101 is designed as a cylinder for easy operation by the experimenter, and is further enhanced with textured surfaces to increase friction.

[0060] In this embodiment, the connecting part is connected by a threaded connection. For example, an external thread is provided on the first operating end 102, and an internal thread that mates with the external thread is provided on the first handle part 101.

[0061] In this embodiment, the first operation terminal 102 is equipped with an embedded light source 103, which is an LED light strip, and the port of the LED light strip is located on the outer surface of the first operation terminal 102, which can be charged via USB.

[0062] In this embodiment, the first operating terminal 102 is disinfected by wiping with alcohol.

[0063] In this embodiment, the dental elevator 2 adopts a slender rod-shaped structure, and the dental elevator 2 includes a second operating end 203 and a third handle portion 201. The thickness of the second operating end 203 gradually decreases from one end near the third handle portion 201 to the other end. The thickness of the second operating end 203 is 0.05-0.3mm, and the width is 0.3-1.2mm.

[0064] In this embodiment, the dental elevator 2 includes a third handle portion 201, and the third handle portion 201 is provided with anti-slip texture 202.

[0065] In this embodiment, the cross-section of the second operating end 203 is a narrow wedge-shaped structure with a thickness of 0.2 mm and a width of 0.5 mm. In other embodiments, the design can be changed according to requirements.

[0066] The specific method of using this invention is as follows:

[0067] Reference Figures 1-3When using this device, first open the buccal mucosa of the mouse or rat with the traction device 1 to fully expose the field of vision at the site where the tooth needs to be extracted. If the field of vision is not clear enough, the LED light strip on the traction device 1 can be turned on to make the field of vision even brighter.

[0068] Then the doctor holds the dental elevator 2 and inserts it between the molars of the mouse and rat, and loosens the dental elevator 2 by leveraging the principle, thereby reducing the stability of the connection between the molars and the alveolar bone.

[0069] Finally, using hand-held dental forceps 3, the molar is pulled out of the alveolar bone.

[0070] This device includes a first arm 312 and a second arm 310. The first arm 312 is positioned at the bifurcation of the molar root and primarily functions as a clamping device. The second arm 310 encircles the distal portion of the molar, its function being to encircle the tooth structure, thereby reducing localized stress on the tooth from the extraction forceps 3 and preventing breakage. The clamping mechanism enhances the stability of the connection between the first arm 312, the second arm 310, and the tooth, thus improving the stability of the device in holding the tooth and ensuring the stability of the extraction. Furthermore, due to the unique anatomy of the maxillary molars in mice and rats, with a large mesial root oriented anteroinferiorly, the encircling effect of the second arm 310 on the molar also provides an upward and posterior auxiliary rotation, facilitating complete extraction of the molar. This assists in tooth extraction experiments in mice and rats and aids in the analysis of etiological factors.

[0071] Example 2

[0072] This embodiment is basically the same as Embodiment 1, except that: in this embodiment, as shown in the example... Figures 4-7 As shown, the dental elevator 2 and the dental forceps 3 are slidably connected to the dental forceps 3 through a connecting device. The dental forceps 3 includes a second handle portion 301 disposed on the forceps arm 303. The second handle portion 301 is rotatably connected to the forceps arm 303. The connecting device is disposed on the side of the second handle portion 301 away from the rotation point of the forceps arm 303.

[0073] In this embodiment, the dental elevator 2 does not have a third handle portion 201.

[0074] In this embodiment, the second handle portion 301 adopts an arc-shaped structure, and the second handle portion 301 and the clamp arm 303 are connected by a damping shaft 302, which can realize stepless rotation adjustment. The rotation limit of the second handle portion 301 is restricted by the connecting device.

[0075] In this embodiment, the connecting device includes a first connecting rod 306 whose two ends are rotatably connected to the second handle portion 301 and the toothed elevator 2, respectively. The first connecting rod 306 is bendable. The clamp arm 303 is provided with an opening 305 that cooperates with the first connecting rod 306. The clamp arm 303 is also provided with a first sliding groove that cooperates with the toothed elevator 2. The opening 305 is provided with a locking device that cooperates with the first connecting rod 306.

[0076] In this embodiment, the first groove passes through the first arm 312 and the second arm 310, and is connected to the outside.

[0077] In this embodiment, the opening 305 is located on the sidewall of the clamp arms 303 away from each other.

[0078] In this embodiment, the locking device includes a locking tooth 308 disposed on the opening 305, and a locking strip 307 that cooperates with the locking tooth 308 is disposed on the first connecting rod 306. The locking strip 307 is disposed on the side of the first connecting rod 306 away from the center of the forceps 3.

[0079] In this embodiment, the locking teeth 308 and locking strip 307 adopt a structure similar to ratchet and ratchet, and the tooth shape of the locking strip 307 and locking teeth 308 is arranged in the direction of the second handle portion 301.

[0080] In this embodiment, an elastic abutment block is provided at the end of the first connecting rod 306 away from the locking strip 307, and the abutment block is connected to the first connecting rod 306 by a telescopic rod 309.

[0081] In this embodiment, one end of the telescopic rod 309 is fixedly connected to the clamp arm 303 by welding, and the other end abuts against the first connecting rod 306.

[0082] In this embodiment, the telescopic rod 309 includes a sub-rod and a main rod. The sides of the sub-rod and the main rod that are far apart from each other are closed structures. A mounting groove for accommodating a telescopic spring is provided between the sub-rod and the main rod, and the two ends of the telescopic spring are connected to the sub-rod and the main rod respectively by welding. When it is necessary to disconnect the connection between the locking teeth 308 and the locking strip 307, simply squeeze the second handle part 301 towards the center. Releasing the second handle part 301 allows the locking teeth 308 and the locking strip 307 to reconnect and be fixed. The fixing method is simple and convenient.

[0083] In this embodiment, the first arm 312 and the second arm 310 are connected by a telescopic device. The telescopic device includes a second connecting rod 4, one end of which is rotatably connected to the first arm 312 and the other end of which is slidably connected to the second arm 310. The dental elevator 2 is provided with a driving device that cooperates with the second connecting rod 4. The second arm 310 is unfolded or fitted relative to the first arm 312 by sliding the dental elevator 2 relative to the dental clamp 3.

[0084] In this embodiment, the second connecting rod 4 is also connected to the first arm 312 via a ball connection.

[0085] In this embodiment, the driving device includes a second slide groove 204 disposed on the dental elevator 2. A wedge block 205 that cooperates with the second connecting rod 4 is disposed on the side of the second slide groove 204 near the pliers head. The inclined surface of the wedge block 205 is disposed on the side near the second arm 310, and a receiving groove for accommodating the second connecting rod 4 is disposed on the inclined surface. The thickness of the wedge block 205 gradually increases along the direction of the second connecting rod 4 toward the pliers head.

[0086] In this embodiment, the second arm 310 is provided with a third sliding groove 3101 that cooperates with the second connecting rod 4. A reset rod 5 is rotatably disposed in the third sliding groove 3101. The other end of the reset rod 5 is rotatably connected to the second connecting rod 4, and the reset rod 5 adopts a telescopic structure.

[0087] In this embodiment, the reset rod 5 and the telescopic rod 309 have the same structure, which will not be described in detail here.

[0088] The specific method of using this invention is as follows:

[0089] Reference Figures 4-7 When using this device, the field of vision exposure is basically the same as in Example 1. The difference is that when the dental elevator 2 is loosened by the dental elevator 2, the doctor directly squeezes the second handle part 301 by hand to make the second handle part 301 fit against the center line of the dental forceps 3. During this process, the second connecting rod 4 rotates relative to the second handle part 301, driving the dental elevator 2 to extend out of the first slide groove. Then, the second handle part 301 is released, so that the retaining teeth 308 and retaining strip 307 come into contact, and the dental elevator 2 is fixed after extending out of the forceps arm 303. Then, the dental elevator 2 is used in the normal way.

[0090] After the dental elevator 2 is used, the dentist inserts their finger into the gap between the second handle 301 and the forceps arm 303, and by expanding their finger outward, rotates the second handle 301 relative to the forceps arm 303, causing the retaining bar 307 to slide relative to the retaining teeth 308, thus retracting the dental elevator 2 into the forceps arm 303. During the retraction and sliding of the dental elevator 2, the drive block 205 moves towards the rotation point of the second connecting rod 4, driving the second connecting rod 4 to rotate relative to the first arm 312, causing the second arm 310 to rotate and unfold relative to the first arm 312, sliding in the third groove 3101, forming a V-shaped structure with the first arm 312. At the same time, the reset rod 5 extends and rotates with the first arm 312, supporting the second connecting rod 4, hooking the root of the molar, and simultaneously encircling the molar for easy extraction. The receiving slot allows the second connecting rod 4 to be stored when the first arm 312 and the second arm 310 are in contact, which reduces the space occupied by the device and enables the device to be miniaturized and compatible with the anatomical structure of rat and mouse teeth.

[0091] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tooth extraction device for laboratory mice, characterized in that: The device includes a puller (1), an elevator (2), and a forceps (3). The forceps (3) includes a forceps arm (303), a connector (304), and a forceps head arranged sequentially. The forceps head has a double-arm structure and a curved structure. The forceps head is curved toward the center of the forceps (3). The double-arm structure includes a first arm (312) arranged parallel to the forceps arm (303). A second arm (310) is also provided at the first arm (312). An angle is formed between the first arm (312) and the second arm (310). When in use, the first arm (312) contacts the bifurcation of the molar root, and the second arm (310) engages with the distal part of the molar. Both the first arm (312) and the second arm (310) have a clamping part on the side that contacts the molar.

2. The tooth extraction device for laboratory mice according to claim 1, characterized in that: The clamping part includes clamping teeth (311) provided on the top surface of the bend of the first arm (312) and the second arm (310), and the included angle between the first arm (312) and the second arm (310) is in the range of 90-100°.

3. The tooth extraction device for laboratory mice according to claim 1, characterized in that: The puller (1) includes a first handle part (101), a connecting part and a first operating end (102) connected in sequence. The vertical cross section of the first operating end (102) adopts a fan-shaped structure. A light source (103) is also provided in the first operating end (102). The first operating end (102) and the light source are transparent.

4. The tooth extraction device for laboratory mice according to claim 1, characterized in that: The dental elevator (2) adopts a slender rod-shaped structure, and the dental elevator (2) includes a second operating end (203) and a third handle part (201). The thickness of the second operating end (203) gradually decreases from one end near the third handle part (201) to the other end. The thickness of the second operating end (203) is 0.05-0.3mm and the width is 0.3-1.2mm.

5. A tooth extraction device for laboratory mice according to any one of claims 1-4, characterized in that: The dental elevator (2) and the dental clamps (3) are slidably connected to the dental clamps (3) through a connecting device. The dental clamps (3) include a second handle portion (301) disposed on the clamp arm (303). The second handle portion (301) is rotatably connected to the clamp arm (303). The connecting device is disposed on the side of the second handle portion (301) away from the rotation point of the clamp arm (303).

6. The tooth extraction device for laboratory mice according to claim 5, characterized in that: The connecting device includes a first connecting rod (306) whose two ends are rotatably connected to the second handle (301) and the toothed elevator (2) respectively. The first connecting rod (306) is bendable. The clamp arm (303) is provided with an opening (305) that cooperates with the first connecting rod (306). The clamp arm (303) is also provided with a first sliding groove that cooperates with the toothed elevator (2). The opening (305) is provided with a locking device that cooperates with the first connecting rod (306).

7. The tooth extraction device for laboratory mice according to claim 6, characterized in that: The locking device includes a locking tooth (308) disposed on the opening (305), and a locking strip (307) disposed on the first connecting rod (306) to cooperate with the locking tooth (308). The locking strip (307) is disposed on the side of the first connecting rod (306) away from the center of the forceps (3).

8. The tooth extraction device for laboratory mice according to claim 7, characterized in that: The first arm (312) and the second arm (310) are connected by a telescopic device. The telescopic device includes a second connecting rod (4) with one end rotatably connected to the first arm (312) and the other end slidably connected to the second arm (310). The dental elevator (2) is provided with a driving device that cooperates with the second connecting rod (4). The second arm (310) is unfolded or fitted relative to the first arm (312) by sliding the dental elevator (2) relative to the dental clamp (3).

9. A tooth extraction device for laboratory mice according to claim 8, characterized in that: The driving device includes a second slide groove (204) provided on the dental elevator (2). The second slide groove (204) is provided with a wedge (205) that cooperates with the second connecting rod (4) on the side near the pliers head. The wedge (205) has a slope on the side near the second arm (310) and a receiving groove for accommodating the second connecting rod (4) is provided on the slope. The thickness of the wedge (205) gradually increases along the direction of the second connecting rod (4) toward the pliers head.

10. A tooth extraction device for laboratory mice according to claim 9, characterized in that: The second arm (310) is provided with a third slide groove (3101) that cooperates with the second connecting rod (4). A reset rod (5) is rotatably provided in the third slide groove (3101). The other end of the reset rod (5) is rotatably connected to the second connecting rod (4), and the reset rod (5) adopts a telescopic structure.

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