Lateral traction clamp for extracting curved roots

Abstract

Lateral traction clamp for the extraction of curved roots, characterized in that it comprises: a clamping body comprising a locking clamp handle, a moving clamp handle and a pin shaft, the locking clamp handle and the moving clamp handle being pivotally connected by the pin shaft and being rotatable relative to each other; that a circular arc-shaped handle part is provided at one end of the locking clamp handle; a clamping head comprising a fixed clamping head and a moving clamping head, the fixed clamping head being rigidly connected to the fixed clamping handle at one end and having a fixed prong at another end; the moving clamping head being rigidly connected to the moving clamping handle at one end and having a moving prong at another end; the fixed prong being opposite the moving prong and the two extending laterally from an end of the clamping head facing away from the clamping handle; a clamping surface being provided on the opposite inner surface of the fixed prong and the moving prong.

Description

Technical field

[0001] The present utility model relates to the technical field of a medical device for stomatology, specifically to a lateral traction clamp for the extraction of curved roots. State of the art

[0002] The palatal root of an upper molar (especially the first and second molars) is a challenging area in clinical tooth extraction surgery due to its deep anatomical location and complex root shape (often exhibiting mesial or distal curvature). Existing root extraction devices and their limitations mainly include: Tooth extraction forceps with a straight beak: the beak extends in the "buccal-lingual direction" or "occlusion-root tip direction", cannot reach a clamping point of the curved palatal root from the side, easily leading to fracture of the tooth root because it is not firmly clamped; Root tip clamp: the prong has a small volume but can only exert a "clamping force"; there is no special torque transmission structure; when extracting the curved palatal root, the direction of force must be repeatedly adjusted, which can easily damage the surrounding alveolar bone and gum tissue; Dental post: depending on the lever principle, the tooth root is levered; this has poor adaptability to the curved palatal root and easily causes a longitudinal fracture of the tooth root or damage to the wall of the alveolar bone.

[0003] Based on this, a lateral traction clamp for the extraction of curved roots is provided, comprising a clamp body and a clamp head. A fixed prong and a moving prong of the clamp head extend laterally. On the inside of the clamp head, a circular arc-shaped clamping surface and non-slip teeth are provided. The laterally extending prong allows for precise lateral clamping of a curved palatal root of an upper molar. The circular arc-shaped clamping surface is adapted to the shape of the tooth root. The non-slip teeth provide a stable clamp and transmit torque to solve the problem of unstable clamping and the high root fracture rate of existing devices.The lateral traction clamp for extracting curved roots can reduce the root fracture rate and tissue damage when extracting the curved palatal root of the maxillary molar, is easy to use, and suitable for clinical tooth extraction surgery in stomatology. Content of the utility model

[0004] To solve the aforementioned technical problem, the present utility model provides the technical solution: Lateral traction clamp for extracting bent roots according to an embodiment of the present utility model, comprising: a clamping body comprising a locking handle, a moving handle, and a pin shaft; the locking handle and the moving handle are pivotally connected by the pin shaft and are rotatable around the pin shaft to enable the "opening, closing, and clamping" action; non-slip patterns are provided on an outer surface of the locking handle and the moving handle to prevent the hand from slipping when applying force; a circular arc-shaped grip section is provided at one end of the locking handle to adapt to the palm gesture for applying force and to reduce operator fatigue; a clamping head comprising a fixed clamping head and a moving clamping head, each integrally formed with the fixed clamping handle and the moving clamping handle, respectively; a fixed prong is integrally formed at one end of the fixed clamping head opposite the fixed clamping handle, and a moving prong is integrally formed at the other end of the moving clamping head opposite the moving clamping handle; both the fixed prong and the moving prong extend laterally along the clamping head, the angle of extension being adapted to a lateral anatomical space of the palatal root of the maxillary molar; a clamping surface on the opposite inner side of the fixed prong and the moving prong is an arc-shaped surface, the radius of which is adapted to the radius of an outer arc of the curved palatal root of the maxillary molar;The clamping surface of the fixed beak and the moving beak are provided with non-slip teeth that prevent slippage on the tooth root during clamping and can also transmit the torque around the long axis of the tooth root through the engagement of the teeth.

[0005] The advantage of the present utility model over the prior art is as follows: the present utility model provides a lateral traction clamp for the extraction of curved roots, with the prong extending laterally, allowing direct access to a lateral clamping point on the curved palatal root of the maxillary molar, thus solving the problem of "inaccessibility, unstable clamping" of the conventional prong; the arc-shaped clamping surface is adapted to the shape of the tooth root, the non-slip prongs prevent slippage, ensuring effective transmission of torque to the tooth root, thus reducing the root fracture rate; it is not necessary to repeatedly lever or adjust the direction of force, thereby reducing pressure damage to the alveolar bone and gums and shortening the healing time after the operation;The non-slip patterns of the clamp handle and the circular-shaped grip section are adapted to the force exertion habits of the doctor's hands in order to reduce fatigue from long-term use. Explanation of the illustrations Fig. shows a structural diagram of a lateral pull clamp for extracting bent roots when closing a beak of the present utility model; Fig. shows a structural diagram of a lateral pull clamp for extracting bent roots when opening a beak of the present utility model; Fig. shows a partially enlarged view of a clamping head of a lateral pull clamp for extracting bent roots when closing a beak of the present utility model; Fig. shows a partially enlarged view of a clamping head of a lateral pull clamp for extracting bent roots when opening a beak of the present utility model. Reference symbol:

[0006] lateral pull clamp for extraction of curved roots 100; Clamping body 10; Fixed clamping handle 11; Moving clamping handle 12; Pin shaft 13; Non-slip pattern 14; Circular arc-shaped handle part 15; Clamping head 20; Fixed clamping head 21; Moving clamping head 22; Fixed beak 23; Moving beak 24; Clamping surface 25; Non-slip prong 26. Designs

[0007] To clarify the purpose, technical solution, and advantages of the embodiments of this utility model, the technical solutions in these embodiments are described clearly and completely below in conjunction with the illustrations. It is evident that the described embodiments are part of the embodiments of this utility model and not the entirety of them. The components of the embodiments of this utility model, which are described and shown in the accompanying illustrations, can be arranged and configured in various ways. Example implementation:

[0008] Lateral pull clamp 100 for extraction of bent roots according to an embodiment of the present utility model, as shown in Fig. until Fig.shown, comprises a terminal body 10 and a terminal head 20.

[0009] The clamping body 10 comprises a fixed clamping handle 11, a moving clamping handle 12, and a pin shaft 13; the fixed clamping handle 11 and the moving clamping handle 12 are pivotally connected by the pin shaft 13 and are rotatable around the pin shaft 13 to enable the "opening, closing, and clamping" action; non-slip patterns 14 are provided on an outer surface of the fixed clamping handle 11 and the moving clamping handle 12 to prevent the hand from slipping when applying force; a circular arc-shaped grip section 15 is provided at one end of the fixed clamping handle 11 to adapt to the hand gesture for applying force in order to reduce operator fatigue.

[0010] Specifically, the material of the clamp body 10 is medical-grade stainless steel, the depth of the non-slip pattern 14 is 0.2 to 0.3 mm, and the diameter of the circular arc handle part 15 is 30 to 35 mm.

[0011] The clamping head 20 comprises a fixed clamping head 21 and a moving clamping head 22, each of which is integrally formed with the fixed clamping handle 11 and the moving clamping handle 12, respectively, to ensure structural rigidity and prevent deformation during force application. A fixed prong 23 is integrally formed at one end of the fixed clamping head 21 opposite the fixed clamping handle 11, and a moving prong 24 is integrally formed at one end of the moving clamping head 22 opposite the moving clamping handle 12. Both the fixed prong 23 and the moving prong 24 extend laterally along the clamping head, rather than in the conventional buccolingual direction. The angle of extension is adapted to a lateral anatomical space of the palatal root of a maxillary molar.

[0012] Specifically, the clamping angle of the beak with the body of the clamping head is 20 120° to 150° to ensure that it can be inserted into an alveolar fossa from the mesial or distal side of the palatal root.

[0013] The opposing inner surface of the fixed beak 23 and the movable beak 24, namely a clamping surface 25 of the tooth root, is an arc-shaped surface; the arc radius is adapted to the radius of an outer arc of the curved palatal root of the maxillary molar; non-slip teeth 26 are provided on the clamping surface 25 of the fixed beak 23 and the movable beak 24, which both prevent slippage on the tooth root during clamping and can transmit the torque around the long axis of the tooth root through the engagement of the teeth, in order to solve the problem where conventional beaks cannot exert torque.

[0014] Specifically, the length of the fixed beak 23 and the movable beak 24 is 5 to 8 mm to adapt to the narrow space of the posterior tooth region of the upper jaw; the thickness is 1.5 to 2 mm to account for rigidity and usability; the clamping surface 25 has a circular radius of 2 to 4 mm, is adapted to the surface of the curved tooth root, and can prevent fracture of the tooth root due to local stress concentration; the number of non-slip prongs 26 is 3 to 5, the prong height is 0.3 to 0.5 mm, and the prong spacing is 1 to 1.2 mm.

[0015] During operation, the dentist grasps the clamp handle, inserts the laterally extending prong into the alveolar fossa from a mesial or distal side of the palatal root of the maxillary molar, so that the clamping surface 25 is adapted to the curved palatal root; the locking clamp handle 11 and the movement clamp handle 12 are clamped together, and the tooth root is stably clamped by the non-slip prongs 26; then an appropriate torque is applied around the long axis of the tooth root, so that the curved palatal root is loosely and finally smoothly extracted in the direction of the torque.

Claims

[1] Lateral traction clamp for extraction of curved roots, characterized by , that this includes: a clamping body comprising a locking clamp handle, a moving clamp handle and a pin shaft, the locking clamp handle and the moving clamp handle being pivotally connected by the pin shaft and being rotatable relative to each other; that a circular arc-shaped handle part is provided at one end of the locking clamp handle; a clamping head comprising a fixed clamping head and a moving clamping head, the fixed clamping head being rigidly connected to the fixed clamping handle at one end and having a fixed prong at another end; the moving clamping head being rigidly connected to the moving clamping handle at one end and having a moving prong at another end; the fixed prong being positioned opposite the moving prong and the two extending laterally from an end of the clamping head facing away from the clamping handle; a clamping surface being provided on the opposite inner surface of the fixed prong and the moving prong. [2] Lateral pull clamp for extraction of bent roots according to claim 1, characterized by , that the fixed beak, the fixed clamping head and the fixed clamping handle are formed in one piece, the moving beak, the moving clamping head and the moving clamping handle are formed in one piece. [3] Lateral pull clamp for extraction of bent roots according to claim 1, characterized by , that non-slip patterns are provided on an outside of the locking handle and the movement clamp handle, and non-slip serrations are provided on the opposite inside of the locking clamp navel and the movement clamp navel. [4] Lateral pull clamp for extraction of bent roots according to claim 1, characterized by , that the clamping surface is a circular arc-shaped surface adapted to an outer circular arc of a curved palatal root of an upper molar.

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