Minimally invasive axial tooth extraction device

Abstract

The utility model relates to a minimally invasive axial tooth extraction device which is used for extracting molar teeth. The device comprises a lifting clamp. The lifting clamp comprises a lifting clamp body and a base clamp body hinged to the lifting clamp body, and further comprises a clamping assembly. The lifting tong head is provided with a prying end, and the prying end exceeds the base tong head. The clamping assembly comprises a clamping frame, a pried piece, two linkage pieces and two oppositely-arranged clamping arms. The clamping arm comprises a clamping tooth part and a linkage part, the linkage part is hinged to the clamping frame, and the clamping tooth part is exposed from the bottom end of the clamping frame; a gap is formed between the bottom end of the clamping frame and the top end of the clamping frame; the prying end can be inserted into a gap between the bottom end of the clamping frame and the top end of the clamping frame; the two ends of the linkage piece are hinged to the linkage part and the pried piece correspondingly, so that the two clamping tooth parts are close to each other when the pried piece is far away from the clamping frame. Tooth extraction operation can be completed step by step with one hand, and convenience is achieved; and discomfort caused by tooth extraction can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental equipment technical field, especially in minimally invasive axial tooth extraction device. BACKGROUND

[0002] Minimally invasive axial tooth extraction is a kind of tooth extraction technology with the goal of reducing tissue damage and accelerating postoperative recovery, and its core is to replace the rotation or lateral torsion in traditional tooth extraction by axial force. One of the traditional minimally invasive axial tooth extraction methods is to use one tooth forceps and one lifting forceps, a total of two forceps to complete. The specific process is that one hand holds the extracted molar by tooth forceps and keeps it, and then the other hand places the lifting forceps on the adjacent molar of the extracted molar, and then one hand keeps the tooth forceps holding the extracted molar, and the other hand makes the lifting forceps head rise. The head of the lifting forceps abuts against the holding part of the tooth forceps, and the extracted molar is axially extracted.

[0003] The traditional minimally invasive axial tooth extraction needs two hands to complete the axial tooth extraction by two forceps, which is relatively troublesome. In addition, during the tooth extraction process, the tooth forceps and the lifting forceps are perpendicular to each other when viewed from above; since the lifting forceps need to be placed along a row of molars, the tooth forceps are used vertically to a row of molars. In this way, the tooth forceps will be stretched into the oral cavity by pushing away the side of the human face, causing discomfort to the human body. SUMMARY

[0004] One object of the utility model is to solve or alleviate the above technical problems.

[0005] The utility model takes the means that minimally invasive axial tooth extraction device is used for extracting molar, and it includes lifting forceps, the lifting forceps include lifting forceps body and the base forceps body that is hinged with lifting forceps body, the lifting forceps body includes lifting forceps head and lifting forceps handle, and the base forceps body includes base forceps head and base forceps handle, it further includes clamping assembly, the lifting forceps head is provided with prying end, and the prying end exceeds base forceps head, the clamping assembly includes clamping frame, pry piece, two linkage pieces and two oppositely arranged clamping arms, the clamping arm includes clamping tooth part and linkage part, the linkage part is hinged with clamping frame, and the clamping tooth part is exposed from the bottom end of clamping frame, a gap is arranged between the bottom end of clamping frame and the top end of clamping frame, the prying end can be inserted into the gap between the bottom end of clamping frame and the top end of clamping frame, and the two ends of linkage piece are hinged with linkage part and pry piece respectively, so that the two clamping tooth parts are close to each other when pry piece is away from clamping frame.

[0006] The utility model achieves the effect that tooth extraction operation can be completed step by step with one hand, which is relatively convenient, and the discomfort caused by tooth extraction can be reduced.

[0007] Further technical solutions, the top end of linkage part is hinged with clamping frame, the middle part of linkage piece is hinged with linkage part, and the hinged axis line of linkage piece and linkage part is closer to the inside than the hinged axis line of the top end of linkage part and clamping frame.

[0008] Further technical solutions, the lifting pliers handle and the base pliers handle are close to each other, the lifting pliers head and the base pliers head are away from each other, the prying end is curved upward and is L-shaped as a whole, so that there is a height difference between the end part of the prying end and the base pliers head.

[0009] Even if the initial angle between the lifting pliers handle and the base pliers handle is small, the L-shaped prying end has enough upward bending stroke to complete the axial tooth extraction, and the tooth extraction operation is facilitated.

[0010] Further technical solutions, the end part of the prying end is convex, and the bottom wall of the prying piece is provided with a limiting groove perpendicular to the lifting pliers body.

[0011] The risk of separation of the end part of the prying end from the prying piece during the upward bending of the prying end can be eliminated or reduced.

[0012] Further technical solutions, the clamping assembly further comprises a resilient member; the two ends of the resilient member are connected with the two clamping arms respectively, or the two ends of the resilient member are connected with the two linkage members respectively, or the two ends of the resilient member are connected with the prying piece and the clamping frame respectively, so that the two clamping arms have a tendency to approach each other.

[0013] The tooth extraction operation can be conveniently completed in steps.

[0014] Further technical solutions, the linkage parts are provided with spring pins, the resilient member is a tension spring and the two ends of the resilient member are connected with the spring pins of the two linkage parts respectively.

[0015] Further technical solutions, the resilient member is a push spring, the linkage members are provided with spring pins, and the two ends of the resilient member are abutted with the spring pins of the two linkage members respectively; or the two ends of the resilient member are abutted with the bottom end of the prying piece and the top end of the clamping frame respectively.

[0016] Further technical solutions, the clamping frame comprises two clamping frame plates; the two clamping frame plates are fixedly and detachably connected with each other through a fixed pin.

[0017] The clamping assembly is convenient to assemble.

[0018] Further technical solutions, the inner side wall of the clamping tooth part is arc-shaped and is provided with a plurality of anti-skid protrusions.

[0019] The friction force on the extracted tooth during tooth extraction is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of the lifting pliers 1 of the embodiment of the utility model.

[0021] Figure 2 is a side view of the lifting pliers 1 of the embodiment of the utility model.

[0022] Figure 3 is a perspective view of the clamping assembly 2 of an embodiment of the present application.

[0023] Figure 4 is a perspective exploded view of the clamping assembly 2 of an embodiment of the present application.

[0024] Figure 5 is a schematic view of section one SEC1; arrow one ARR1 indicates the general direction of the upward tilting of the elevator body 11 during tooth extraction.

[0025] Figure 6 is a schematic view of section two SEC2; arrow one ARR1 indicates the general direction of the upward tilting of the elevator body 11 during tooth extraction; arrow two ARR2 indicates the general direction of the inward rotation of the tooth clamping portion 211 during tooth extraction.

[0026] The drawing of the specification that best illustrates the technical features of the present application is Figure 5 .

[0027] arrow one ARR1; arrow two ARR2; section one SEC1; section two SEC2; elevator 1; elevator body 11; elevator head 111; prying end 112; overreaching distance 113; elevator handle 119; base body 12; base head 121; base handle 129; hinge shaft 13; clamping assembly 2; clamping arm 21; tooth clamping portion 211; linkage portion 212; clamping pin 219; linkage 22; inward rotation distance 221; linkage shaft 229; prying object 23; limiting groove 231; elastic member 24; spring pin 249; clamping frame 29; clamping frame plate 291; fixing pin 292; molar 9; extracted tooth 91; padded tooth 92. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be described below with reference to the drawings of the specification.

[0029] As a specific embodiment, the minimally invasive axial tooth extraction device of the embodiment of the present application is used for extracting a molar 9; it comprises an elevator 1; the elevator 1 comprises an elevator body 11 and a base body 12 hinged to the elevator body 11, the elevator body 11 comprises an elevator head 111 and an elevator handle 119, and the base body 12 comprises a base head 121 and a base handle 129. Generally, the elevator body 11 and the base body 12 are hinged through a hinge shaft 13. As shown in Figure 2As shown, the lifting forceps handle 111 and the base forceps handle 121 are away from each other when the lifting forceps handle 119 and the base forceps handle 129 are close to each other; of course, the lifting forceps handle 111 and the base forceps handle 121 are close to each other when the lifting forceps handle 119 and the base forceps handle 129 are close to each other is also a feasible embodiment; that is, the included angle between the lifting forceps handle 111 and the base forceps handle 121 changes with the included angle between the lifting forceps handle 119 and the base forceps handle 129.

[0030] The minimally invasive axial tooth extraction device of the embodiment of the utility model still includes clamping assembly 2.

[0031] The lifting forceps handle 111 is provided with a prying end 112, and the prying end 112 exceeds the base forceps handle 121. Figure 2 As shown, the distance of the prying end 112 exceeding the base forceps handle 121 is an exceeding distance 113.

[0032] The clamping assembly 2 includes a clamping frame 29, a prying piece 23, two linkage pieces 22 and two oppositely arranged clamping arms 21.

[0033] The clamping arm 21 includes a clamping tooth part 211 and a linkage part 212, the linkage part 212 is hinged with the clamping frame 29, and the clamping tooth part 211 is exposed from the bottom end of the clamping frame 29, for example, the clamping pin 219 on the linkage part 212 is hinged with the clamping frame 29. The inner side wall of the clamping tooth part 211 is arc-shaped and is provided with a plurality of anti-skid protrusions (not shown in the drawing), so as to improve the friction force on the extracted tooth 91 during tooth extraction.

[0034] The prying piece 23 exceeds the top end of the clamping frame 29, and a gap is arranged between the bottom end of the clamping frame 29 and the top end of the clamping frame 29; the prying end 112 can be inserted into the gap between the bottom end of the clamping frame 29 and the top end of the clamping frame 29.

[0035] The two ends of the linkage piece 22 are respectively hinged with the linkage part 212 and the prying piece 23, for example, the hinging is realized through a linkage shaft 229; so that when the prying piece 23 is away from the clamping frame 29, the two clamping tooth parts 211 are close to each other.

[0036] As shown, when tooth extraction is needed, the base forceps handle 121 is placed on the tooth pad 92; the clamping assembly 2 is placed at the extracted tooth 91, so that the two clamping tooth parts 211 clamp the extracted tooth 91; after the prying end 112 is inserted into the gap between the bottom end of the clamping frame 29 and the top end of the clamping frame 29, the lifting forceps handle 119 and the base forceps handle 129 are held, so that the prying end 112 is upturned (as shown by arrow one ARR1) and abuts against the prying piece 23, the lifting forceps handle 111 is slowly expanded, and the prying piece 23 has a tendency to be away from the clamping frame 29. Figure 5 As shown, when tooth extraction is needed, the base forceps handle 121 is placed on the tooth pad 92; the clamping assembly 2 is placed at the extracted tooth 91, so that the two clamping tooth parts 211 clamp the extracted tooth 91; after the prying end 112 is inserted into the gap between the bottom end of the clamping frame 29 and the top end of the clamping frame 29, the lifting forceps handle 119 and the base forceps handle 129 are held, so that the prying end 112 is upturned (as shown by arrow one ARR1) and abuts against the prying piece 23, the lifting forceps handle 111 is slowly expanded, and the prying piece 23 has a tendency to be away from the clamping frame 29.

[0037] Figure 6 ​As shown, in the process of slow expansion of the lifting forceps head 111, the prying piece 23 has a tendency to move away from the clamping frame 29, and the two clamping tooth portions 211 are close to each other to clamp the extracted tooth 91. The more the two clamping tooth portions 211 clamp the extracted tooth 91, the greater the resistance of the prying piece 23; at the same time, the more the prying piece 23 moves away from the clamping frame 29, the more the two clamping tooth portions 211 clamp the extracted tooth 91; in the process, the extracted tooth 91 is clamped and axially moved by the two clamping tooth portions 211 until the extracted tooth 91 is extracted.

[0038] As can be seen from the above, the minimally invasive axial tooth extraction device of the embodiment of the utility model does not need two mutually perpendicular forceps to cooperate with each other, can complete the tooth extraction operation step by step with one hand, is more convenient, and will not have the forceps to move the side face part of the human body, can reduce the discomfort caused by tooth extraction.

[0039] As one of the specific embodiments, the top end of the linkage part 212 is hinged to the clamping frame 29, the linkage piece 22 is hinged to the middle part of the linkage part 212, and the hinge axis line of the linkage piece 22 and the linkage part 212 is closer to the inside than the hinge axis line of the top end of the linkage part 212 and the clamping frame 29 (that is, an inner rotation interval 221 is formed); so that when the prying piece 23 moves away from the clamping frame 29, the two clamping tooth portions 211 are close to each other.

[0040] As one of the specific embodiments, when the lifting forceps handle 119 and the base forceps handle 129 are close to each other, the lifting forceps head 111 and the base forceps head 121 are away from each other; the prying end 112 is bent upward to be L-shaped as a whole, so that there is a height difference between the end part of the prying end 112 and the base forceps head 121. Even if the initial angle between the lifting forceps handle 119 and the base forceps handle 129 is set to be small, the L-shaped prying end 112 also has enough upward bending stroke to complete the axial tooth extraction, which is convenient for tooth extraction operation.

[0041] As one of the specific embodiments, the end part (not marked in the drawing) of the prying end 112 is a convex (that is, thick in thickness) in the shape of a spherical ball, and the bottom wall of the prying piece 23 is provided with a limiting groove 231 perpendicular to the lifting forceps body 11. The risk of separation of the end part of the prying end 112 from the prying piece 23 in the process of upward bending of the prying end 112 can be eliminated or reduced.

[0042] As one of the specific embodiments, the clamping assembly 2 further comprises an elastic member 24; two ends of the elastic member 24 are respectively connected with the two clamping arms 21, or the two ends of the elastic member 24 are respectively connected with the two linkage members 22, or the two ends of the elastic member 24 are respectively connected with the prying member 23 and the clamping frame 29, so that the two clamping arms 21 have a tendency to approach each other. During tooth extraction, the clamping assembly 2 is first placed at the tooth to be extracted 91, so that the two clamping arms 21 clamp the tooth to be extracted 91, and due to the tendency of the two clamping arms 21 to approach each other, the posture of the two clamping arms 21 clamping the tooth to be extracted 91 is maintained, and then the tooth extraction operation is completed through the elevator 1, so that the tooth extraction operation can be completed in steps more conveniently.

[0043] As one of the specific embodiments, the linkage portions 212 are each provided with a spring pin 249, the elastic member 24 is a tension spring and the two ends thereof are respectively connected with the spring pins 249 of the two linkage portions 212, so that the two clamping arms 21 have a tendency to approach each other.

[0044] As one of the specific embodiments (not shown in the drawings), the elastic member 24 is a push spring, the linkage members 22 are each provided with a spring pin 249, and the two ends of the elastic member 24 are respectively abutted against the spring pins 249 of the two linkage members 22; or the two ends of the elastic member 24 are respectively abutted against the bottom end of the prying member 23 and the top end of the clamping frame 29; so that the two clamping arms 21 have a tendency to approach each other.

[0045] As one of the specific embodiments, the clamping frame 29 comprises two clamping frame plates 291; the two clamping frame plates 291 are detachably fixedly connected with each other through a fixing pin 292. It is convenient for assembling the clamping assembly 2.

Claims

1. A minimally invasive axial tooth extraction device for extracting molars (9); it includes lifting forceps (1); the lifting forceps (1) includes a lifting forceps body (11) and a base forceps body (12) hinged to the lifting forceps body (11), the lifting forceps body (11) includes a lifting forceps head (111) and a lifting forceps handle (119), and the base forceps body (12) includes a base forceps head (121) and a base forceps handle (129); Its characteristics are, It also includes a clamping assembly (2); the lifting jaw (111) is provided with a prying end (112), the prying end (112) extending beyond the base jaw (121); the clamping assembly (2) includes a clamping frame (29), a prying part (23), two linkage parts (22) and two opposing clamping arms (21); the clamping arm (21) includes a clamping jaw (211) and a linkage part (212), the linkage part (212) is hinged to the clamping frame (29), and the clamping jaw... Part (211) is exposed from the bottom end of clamping frame (29); a gap is provided between the bottom end of clamping frame (29) and the top end of clamping frame (29); the prying end (112) can be inserted into the gap between the bottom end of clamping frame (29) and the top end of clamping frame (29); the two ends of the linkage (22) are respectively hinged to the linkage part (212) and the prying part (23), so that when the prying part (23) moves away from clamping frame (29), the two clamping teeth (211) move closer to each other.

2. The minimally invasive axial tooth extraction device according to claim 1, characterized in that, The top of the linkage part (212) is hinged to the clamping frame (29), the linkage member (22) is hinged to the middle of the linkage part (212), and the hinge axis of the linkage member (22) and the linkage part (212) is closer to the center line of the hinge axis of the top of the linkage part (212) and the clamping frame (29).

3. The minimally invasive axial tooth extraction device according to claim 1, characterized in that, When the lifting clamp handle (119) and the base clamp handle (129) are close to each other, the lifting clamp head (111) and the base clamp head (121) are far apart; the prying end (112) is bent upward and is L-shaped as a whole, so that there is a height difference between the end part of the prying end (112) and the base clamp head (121).

4. The minimally invasive axial tooth extraction device according to claim 3, characterized in that, The head of the prying end (112) is divided into a protrusion, and the bottom wall of the prying part (23) is provided with a limiting groove (231) perpendicular to the lifting clamp body (11).

5. The minimally invasive axial tooth extraction device according to claim 1, characterized in that, The clamping assembly (2) also includes an elastic element (24); the two ends of the elastic element (24) are respectively connected to the two clamping arms (21), or the two ends of the elastic element (24) are respectively connected to the two linkages (22), or the two ends of the elastic element (24) are respectively connected to the pried part (23) and the clamping frame (29), so that the two clamping arms (21) tend to move closer to each other.

6. The minimally invasive axial tooth extraction device according to claim 5, characterized in that, Each linkage part (212) is provided with a spring pin (249), and the elastic element (24) is a tension spring with both ends connected to the spring pins (249) of the two linkage parts (212).

7. The minimally invasive axial tooth extraction device according to claim 5, characterized in that, The elastic element (24) is a thrust spring, and the linkage element (22) is provided with spring pins (249). The two ends of the elastic element (24) abut against the spring pins (249) of the two linkage elements (22); or the two ends of the elastic element (24) abut against the bottom end of the pried part (23) and the top end of the clamping frame (29).

8. The minimally invasive axial tooth extraction device according to claim 6, characterized in that, The clamping frame (29) includes two clamping frame plates (291); the two clamping frame plates (291) are detachably and fixedly connected to each other by a fixing pin (292).

9. The minimally invasive axial tooth extraction device according to claim 1, characterized in that, The inner wall of the clamping part (211) is curved and has several anti-slip protrusions.

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