Self-locking special dental forceps

Abstract

This utility model discloses a self-locking oral forceps, including a first clamping arm and a second clamping arm fixedly connected at their tail ends, with a self-locking assembly between the first and second clamping arms. The self-locking assembly includes a support rod, an adjusting roller, and a locking nut. The adjusting roller is fixedly installed in the middle of the support rod and coaxially arranged with it. The first and second clamping arms have interconnected support through holes and limiting strip holes. Both ends of the support rod pass through the support through holes and limiting strip holes in sequence, extending to the outside of the first and second clamping arms and connecting with the locking nut. The locking nut has a limiting block that matches the limiting strip hole. Both ends of the support rod are machined with external threads in opposite directions. The inner walls of the inner holes of a pair of fixing nuts are machined with internal threads that match the external threads at the corresponding ends of the support rods. The structure of the self-locking assembly of this utility model allows for flexible adjustment of the tightness of the clamped object, saving time and effort during operation.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and relates to a forceps, specifically a self-locking oral forceps. Background Technology

[0002] In current clinical practice, when performing inlay restorations, medical staff need to use an adhesive rod to fix the inlay and perform acid etching and rinsing on the inlay outside the mouth. During this operation, the inlay is prone to slipping or falling off, causing inlay contamination. During the bonding process, the adhesive can also stick to gloves, affecting the point of force for fixation. In clinical practice, tools such as forceps are used to hold the inlay for the above operations, but medical staff need to maintain a clamping force for a long time, which can cause hand fatigue and affect the medical operation and treatment process. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a self-locking oral forceps that can solve the technical problems of existing inlays being difficult to hold and causing hand fatigue.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A self-locking oral forceps includes a forceps body composed of a first clamping arm and a second clamping arm. The first clamping arm and the second clamping arm have the same structure and are arranged facing each other. The tail ends of the first clamping arm and the second clamping arm are fixedly connected, and a self-locking component is provided between the first clamping arm and the second clamping arm.

[0006] The self-locking assembly includes a support rod, an adjusting roller, and a locking nut. The adjusting roller is fixedly installed in the middle of the support rod and is coaxially arranged with the support rod. The first clamping arm and the second clamping arm are both provided with a support through hole and a limiting strip hole arranged coaxially. The support through hole is opened in the inner side wall of the first clamping arm and the second clamping arm, and the limiting strip hole is opened in the outer side wall of the first clamping arm and the second clamping arm. The support through hole and the limiting strip hole are connected. Both ends of the support rod pass through the support through hole and the limiting strip hole in sequence and extend to the outer side of the first clamping arm and the second clamping arm to connect with the locking nut. A pair of limiting blocks that can be embedded in the limiting strip hole are provided on the end face of the locking nut facing the limiting strip hole.

[0007] Both ends of the support rod are machined with external threads, and the helical directions of the external threads at both ends of the support rod are reversed. The inner wall of the inner hole of the pair of fixing nuts is machined with an internal thread that matches the external thread of the corresponding side of the support rod end.

[0008] This utility model also includes the following technical features:

[0009] The first clamping arm and the second clamping arm are both composed of an integrally connected connecting section and a clamping section. There is an included angle between the connecting section of the first clamping arm and the connecting section of the second clamping arm, and the tail ends are fixedly connected. The clamping sections of the first clamping arm and the second clamping arm are arranged in parallel. The self-locking component is installed on a pair of clamping sections.

[0010] The first clamping arm and the second clamping arm are each fixedly connected to a clamping plate at their head ends. The clamping plate is teardrop-shaped, and a clamping rubber pad is installed on the opposite end faces of the pair of clamping plates.

[0011] The clamping pad includes a pad body, a mounting rod, and a snap-fit ​​connector that are coaxially arranged and connected in sequence. The pad body is in the shape of a disc. The clamping plate has a mounting through hole, the mounting rod is disposed in the mounting through hole, the pad body is in contact with the inner side wall of the clamping plate, and the snap-fit ​​connector is in contact with the outer side wall of the clamping plate.

[0012] The opposing end faces of the pair of rubber pad bodies are clamping surfaces, which are arrayed sawtooth structures or arc-shaped concave structures.

[0013] There is an angle between the central axis of the clamping piece and the central axis of the clamping segment.

[0014] The angle between the central axis of the clamping piece and the central axis of the clamping segment is an obtuse angle of 100° to 150°.

[0015] The outer wall of the clamping section is machined with anti-slip grooves.

[0016] The outer circumferential wall of the adjusting roller is machined with diamond-shaped anti-slip texture.

[0017] Compared with the prior art, this utility model has the following technical effects:

[0018] (I) This utility model has a reasonable structure and is easy to operate. The structure of the self-locking component can flexibly adjust the size between a pair of clamping plates, that is, adjust the tightness of clamping the target object. It can stably clamp the target object in a time-saving and labor-saving manner, which is convenient for subsequent operations.

[0019] (II) The detachable structure of the clamping pad in this utility model can prevent the target object from falling and ensure that the surface of the target object is not damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a partial exploded view of the present invention.

[0022] Figure 3 This is a top view of the present invention.

[0023] Figure 4 This is a schematic diagram of the clamping rubber pad of this utility model. Figure 1 .

[0024] Figure 5 This is a schematic diagram of the clamping rubber pad of this utility model. Figure 2 .

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. First clamping arm; 2. Second clamping arm; 3. Self-locking assembly; 4. Support through hole; 5. Limiting strip hole; 6. Clamping piece; 7. Clamping pad; 8. Mounting through hole.

[0027] 11. Connecting section; 12. Clamping section;

[0028] 31. Support rod; 32. Adjusting roller; 33. Locking nut; 34. Limit block;

[0029] 71. Rubber pad body; 72. Mounting rod; 73. Clip connector.

[0030] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0031] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper", "lower", "left", and "right" are generally defined based on the drawing in the corresponding figure, and "inner" and "outer" refer to the inner and outer contours of the corresponding components.

[0033] Example:

[0034] This embodiment provides a self-locking oral forceps, such as... Figures 1 to 5 As shown, the tweezers body includes a first clamping arm 1 and a second clamping arm 2. The first clamping arm 1 and the second clamping arm 2 have the same structure and are arranged facing each other. The tail ends of the first clamping arm 1 and the second clamping arm 2 are fixedly connected. A self-locking component 3 is provided between the first clamping arm 1 and the second clamping arm 2.

[0035] The self-locking assembly 3 includes a support rod 31, an adjusting roller 32, and a locking nut 33. The adjusting roller 32 is fixedly installed in the middle of the support rod 31 and is coaxially arranged with the support rod 31. The first clamping arm 1 and the second clamping arm 2 are both provided with a support through hole 4 and a limiting strip hole 5 arranged coaxially. The support through hole 4 is opened in the inner side wall of the first clamping arm 1 and the second clamping arm 2, and the limiting strip hole 5 is opened in the outer side wall of the first clamping arm 1 and the second clamping arm 2. The support through hole 4 and the limiting strip hole 5 are connected. Both ends of the support rod 31 pass through the support through hole 4 and the limiting strip hole 5 in sequence and extend to the outer side of the first clamping arm 1 and the second clamping arm 2 to connect with the locking nut 33. The end face of the locking nut 33 facing the limiting strip hole 5 is provided with a pair of limiting blocks 34 that can be embedded in the limiting strip hole 5.

[0036] Both ends of the support rod 31 are machined with external threads, and the helical directions of the external threads at both ends of the support rod 31 are reversed. The inner walls of the inner holes of a pair of fixing nuts 33 are machined with internal threads that match the external threads at the ends of the support rod 31 on the corresponding side.

[0037] In this embodiment, the limiting block 34 on the locking nut 33 is inserted into the limiting strip hole 5, so that the locking nut 33 is fixed relative to the tweezers body. The support rod 31 rotates with the adjusting roller 32. The external threads at both ends of the support rod 31 are engaged with the internal threads of the locking nut 33. The locking nut 33 drives the first clamping arm 1 and the second clamping arm 2 to move towards each other or away from each other, so as to achieve the clamping function of the target object. When the head ends of the first clamping arm 1 and the second clamping arm 2 clamp the target object, the self-locking component 3 keeps the entire tweezers in a fixed state. Medical staff do not need to apply clamping force to the first clamping arm 1 and the second clamping arm 2, making subsequent operations more labor-saving and time-saving. The target object in this embodiment is an inlay of different shapes.

[0038] As a preferred embodiment, the first clamping arm 1 and the second clamping arm 2 are both composed of an integrally connected connecting section 11 and a clamping section 12. There is an angle between the connecting section 11 of the first clamping arm 1 and the connecting section 11 of the second clamping arm 2 and the tail ends are fixedly connected. The clamping sections 12 of the first clamping arm 1 and the second clamping arm 2 are arranged in parallel. The self-locking component 3 is installed on a pair of clamping sections 12. The parallel arrangement between the pair of clamping sections 12 prevents the support rod 31 and the locking nut 33 from getting stuck due to the angle, which facilitates the smooth operation of the self-locking component 3.

[0039] As a preferred embodiment, in this embodiment, a clamping plate 6 is fixedly connected to the head end of both the first clamping arm 1 and the second clamping arm 2. The clamping plate 6 is teardrop-shaped, and a clamping pad 7 is installed on the facing end face of each pair of clamping plates 6. The clamping pad 7 increases the clamping area and the friction between the clamping surface and the target object, which can prevent the target object from slipping and make the clamping more stable, and also ensure that the target object is not damaged during the clamping process.

[0040] Specifically, the clamping pad 7 includes a pad body 71, a mounting rod 72, and a snap connector 73, which are coaxially arranged and connected in sequence. The pad body 71 is in the shape of a circular plate. The clamping plate 6 has a mounting through hole 8, and the mounting rod 72 is disposed in the mounting through hole 8. The pad body 71 is in contact with the inner side wall of the clamping plate 6, and the snap connector 73 is in contact with the outer side wall of the clamping plate 6. The clamping pad 7 is a consumable and a detachable structure from the clamping plate 6, which facilitates subsequent disinfection or replacement. In this embodiment, the clamping pad 7 is a sterilizable, high-temperature resistant, and corrosion-resistant silicone pad.

[0041] Furthermore, the opposing end faces of a pair of rubber pad bodies 71 are clamping surfaces. The clamping surfaces are either array-type serrated structures or arc-shaped concave structures. The array-type serrated clamping surfaces are mostly used to clamp inserts with relatively flat outer walls, while the arc-shaped concave clamping surfaces are mostly used to clamp inserts with relatively rounded outer contours. Different clamping rubber pads 7 can be selected and assembled according to the shape of different target objects.

[0042] As a preferred embodiment, there is an angle between the central axis of the clamping piece 6 and the central axis of the clamping segment 12.

[0043] Specifically, the angle between the central axis of the clamping piece 6 and the central axis of the clamping section 12 is an obtuse angle of 100° to 150°, which makes it easier for medical staff to operate inside the patient's mouth.

[0044] As a preferred embodiment, the outer wall of the clamping section 12 is provided with an anti-slip groove to increase the friction between the medical staff's hand and the surface of the tweezers, thus preventing the tweezers from slipping.

[0045] As a preferred embodiment, the outer circumferential wall of the adjusting roller 32 is machined with a diamond-shaped anti-slip texture, so that medical staff can operate it smoothly even when wearing gloves.

[0046] In actual operation of this embodiment:

[0047] By rotating the adjusting roller 32, the distance between the clamping surfaces of the pair of clamping pads 7 is made greater than the size of the target object. Hold the tweezers with one hand and place the target object between the pair of clamping pads 7 with the other hand. Rotate the adjusting roller 32 again to make the pair of clamping pads 7 firmly clamp the target object, and then proceed with the subsequent operations.

Claims

1. A self-locking oral forceps, comprising a forceps body composed of a first clamping arm (1) and a second clamping arm (2), characterized in that, The first clamping arm (1) and the second clamping arm (2) have the same structure and are arranged facing each other. The tail ends of the first clamping arm (1) and the second clamping arm (2) are fixedly connected. A self-locking component (3) is provided between the first clamping arm (1) and the second clamping arm (2). The self-locking assembly (3) includes a support rod (31), an adjusting roller (32), and a locking nut (33). The adjusting roller (32) is fixedly installed in the middle of the support rod (31) and is coaxially arranged with the support rod (31). The first clamping arm (1) and the second clamping arm (2) are both provided with a support through hole (4) and a limiting strip hole (5) arranged coaxially. The support through hole (4) is opened on the inner side wall of the first clamping arm (1) and the second clamping arm (2). The limiting strip hole (5) is opened on the inner side wall of the first clamping arm (1) and the second clamping arm (2). The support rod (31) is located on the outer side wall of the first clamping arm (1) and the second clamping arm (2). The support through hole (4) and the limiting strip hole (5) are connected. Both ends of the support rod (31) pass through the support through hole (4) and the limiting strip hole (5) in sequence and extend to the outer side of the first clamping arm (1) and the second clamping arm (2) to be connected to the locking nut (33). A pair of limiting blocks (34) that can be embedded in the limiting strip hole (5) are provided on the end face of the locking nut (33) facing the limiting strip hole (5). Both ends of the support rod (31) are machined with external threads, and the helical directions of the external threads at both ends of the support rod (31) are reversed. The inner wall of the inner hole of the pair of locking nuts (33) is machined with an internal thread that matches the external thread at the end of the support rod (31) on the corresponding side.

2. The self-locking oral forceps as described in claim 1, characterized in that, The first clamping arm (1) and the second clamping arm (2) are both composed of an integrally connected connecting section (11) and a clamping section (12). There is an angle between the connecting section (11) of the first clamping arm (1) and the connecting section (11) of the second clamping arm (2) and the tail ends are fixedly connected. The clamping section (12) of the first clamping arm (1) and the clamping section (12) of the second clamping arm (2) are arranged in parallel. The self-locking component (3) is installed on a pair of clamping sections (12).

3. The self-locking oral forceps as described in claim 2, characterized in that, The head ends of the first clamping arm (1) and the second clamping arm (2) are each fixedly connected to a clamping piece (6). The clamping piece (6) is teardrop-shaped, and a clamping pad (7) is installed on the opposite end faces of the pair of clamping pieces (6).

4. The self-locking oral forceps as described in claim 3, characterized in that, The clamping pad (7) includes a pad body (71), a mounting rod (72) and a snap connector (73) that are coaxially arranged and connected in sequence. The pad body (71) is in the shape of a disc. The clamping plate (6) has an installation through hole (8). The mounting rod (72) is disposed in the installation through hole (8). The pad body (71) is in contact with the inner side wall of the clamping plate (6), and the snap connector (73) is in contact with the outer side wall of the clamping plate (6).

5. The self-locking oral forceps as described in claim 4, characterized in that, The opposing end faces of the pair of said rubber pad bodies (71) are clamping surfaces, and the clamping surfaces are arrayed sawtooth structures or arc-shaped concave structures.

6. The self-locking oral forceps as described in claim 3, characterized in that, There is an angle between the central axis of the clamping piece (6) and the central axis of the clamping segment (12).

7. The self-locking oral forceps as described in claim 6, characterized in that, The angle between the central axis of the clamping piece (6) and the central axis of the clamping section (12) is an obtuse angle of 100° to 150°.

8. The self-locking oral forceps as described in claim 2, characterized in that, The outer wall of the clamping section (12) is machined with anti-slip grooves.

9. The self-locking oral forceps as described in claim 1, characterized in that, The outer circumferential wall of the adjusting roller (32) is machined with a diamond-shaped anti-slip texture.

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