CN212679289U - Novel mandible stump forceps - Google Patents

Abstract

The utility model discloses a novel mandible stump forceps, which comprises a forceps handle and a forceps beak, wherein the forceps beak comprises a forceps beak clamping section and a forceps beak force arm section, an obtuse angle alpha is formed between the forceps beak clamping section and the forceps beak force arm section, and the plane formed by the forceps beak clamping section and the forceps beak force arm section is vertical to the opening plane of the forceps handle; under the free closed state of the two forceps handles, a space is arranged between the cutting edges at the tail ends of the two forceps beak clamping sections; in the process of clamping the tooth root, the forceps beak and the forceps handle have better toughness, so that the tooth root can be effectively clamped, the tooth root can be prevented from being crushed, and the risk of damaging adjacent teeth and soft tissues is reduced; and the through holes arranged on the forceps handle reduce the weight of the forceps and have the anti-skidding function, and the forceps also accord with the ergonomics, and have comfortable hand feeling and flexible operation.

Description

Novel mandible stump forceps

Technical Field

The utility model belongs to oral cavity maxillofacial surgery medical instrument field, concretely relates to new-type incomplete root of lower jaw pincers.

Background

Teeth can be classified into crowns exposed in the oral cavity and roots embedded in alveolar bone. For crowns that have destroyed stumps remaining in the alveolar bone (at or below the gingival level), extraction is often required because there is no value retained by the treatment. However, the traditional mandibular root forceps have too thick and too wide beak clamping sections and large clamping stress, and are used for removing the mandibular tooth root which is large, complete and not easy to be crushed, but cannot go deep into the lower part of the gum to clamp the short and fragile residual root; in addition, the pincers handle and the pincers beak of traditional lower jaw root pincers are the rigidity design, and the butt joint clamping face of pincers beak laminates completely, even if can carry the higher incomplete root in position, in operation process, because the clamping-force is big, very easily presss from both sides it garrulous, leads to incomplete root can not wholly be drawn out, need draw out the root of tooth with other instruments, wastes time and energy, still has the risk of damage alveolar bone, damage adjacent tooth even more. The labor intensity of doctors is increased, and the physiological and psychological of patients are injured to a certain extent.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a novel mandibular stump forceps which is used for pulling out stumps which are incomplete, easy to be crushed or deep in position (namely, are positioned on the gingival plane or below). When the tooth root is clamped, the tooth root is prevented from being crushed due to the fact that clamping force is loaded too fast, clamping can be conducted stably, slipping is prevented, and damage to adjacent teeth and soft tissues is avoided.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a novel mandible stump forceps comprises a forceps handle and a forceps beak which are hinged through a joint, wherein the forceps beak comprises a forceps beak clamping section and a forceps beak force arm section, an obtuse angle alpha is formed between the forceps beak clamping section and the forceps beak force arm section, and a plane formed by the forceps beak clamping section and the forceps beak force arm section is perpendicular to an opening plane of the forceps handle; under the free closed state of the two forceps handles, a space is arranged between the opposite surfaces of the tail ends of the two forceps beak clamping sections.

Furthermore, the thickness and the width of the forceps beak force arm section are gradually reduced from the hinged part to the bending part of the forceps beak, and the cross sectional area of the forceps beak force arm section is smaller than that of the forceps handle.

Furthermore, the opposite surfaces of the tail sections of the two forceps beak clamping sections are provided with corresponding cambered surface grooves, and the width of the two ends of each cambered surface groove is smaller than the width of the abdomen of each cambered surface groove.

Further, from the starting position of the cambered surface groove of the forceps beak clamping section to the tail end of the forceps beak clamping section, the thickness of the cambered surface groove is gradually reduced, and a cutting edge is formed at the tail end of the forceps beak clamping section.

Furthermore, a plurality of circular through holes are formed in the forceps handle.

Furthermore, the distance between two cutting edges at the tail end of the clamp beak clamping section is 2-3 mm.

Furthermore, the forceps handle and the forceps beak are made of matte surfaces, the outer side surface of the forceps handle is designed to be a cambered surface, and the size of an obtuse angle formed between the forceps beak clamping section and the forceps beak force arm section is more than 100 degrees and less than 110 degrees.

Furthermore, the length of the nipper clamping section is 18-22 mm, and the length of the nipper force arm section is 30-35 mm.

Further, the outer surface of the forceps beak is coated with an antibacterial coating.

Furthermore, an included angle of 0.5-1 degrees is arranged between the opposite side surfaces of the two forceps beak force arm sections, and the vertex of the included angle is close to the articulated shaft.

Furthermore, the thickness and the width of the forceps beak force arm section are gradually reduced from the hinged part to the bending part of the forceps beak, and the cross sectional area of the forceps beak force arm section is smaller than that of the forceps handle, so that the forceps beak has better toughness and is softer in force transmission, a buffering effect is realized when a tooth root is clamped, and the tooth root is further prevented from being crushed; moreover, through the bent structure design, the visual field of an operator is greatly increased, and details in tooth extraction operation can be conveniently observed.

Furthermore, the opposite surfaces of the tail sections of the two forceps beak clamping sections are provided with corresponding cambered surface grooves, the width of the two ends of each cambered surface groove is smaller than the width of the abdomen of each cambered surface groove, the structural design is reasonable, the structural shape of the tooth is met, the forceps beak can encircle the tooth root, the contact surface between the forceps beak and the tooth root is increased, and smooth tooth extraction is facilitated.

Further, from the starting department of the cambered surface recess of pincers beak clamping section to pincers beak clamping section end, the thickness of cambered surface recess reduces gradually to form the blade at pincers beak clamping section end, be favorable to pincers beak to cut into and stretch into the gap of root of a tooth and alveolus, avoid haring adjacent tooth and soft tissue.

Furthermore, the plurality of circular through holes are formed in the forceps handle, so that the forceps handle has good toughness on the premise of not changing the rigidity of the forceps handle, the clamping force of a conducting palm is buffered, the phenomenon that the tooth roots are crushed due to overlarge stress is avoided, the plurality of circular through holes are formed in the forceps handle, the weight of the tooth root forceps is reduced, the operation is flexible, and the circular through holes also have an anti-skidding effect.

Further, the arc surface of pincers handle makes the operator feel comfortable when holding, adopts the matte type top layer, can not produce the reflection under the light shines, does benefit to the operator and observes inside the oral cavity.

Furthermore, the length of the forceps beak clamping section is 18-22 mm, and the length of the forceps beak force arm section is 30-35 mm, so that the forceps beak force arm section is suitable for the oral cavity and tooth profile of an Asian person and can effectively extend to all tooth roots.

Furthermore, the outer surface of the beak of the pliers is coated with an antibacterial coating, so that harmful bacteria can be effectively inhibited from breeding, and the infection risk of patients is reduced.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the clamp comprises a clamp handle and a clamp beak, wherein the clamp beak comprises a clamp beak clamping section and a clamp beak force arm section, an obtuse angle alpha is formed between the clamp beak clamping section and the clamp beak force arm section, and a plane formed by the clamp beak clamping section and the clamp beak force arm section is perpendicular to an opening plane of the clamp handle; the circular through hole design of the clamp handle can effectively avoid rigid transmission of clamping force, and avoids stress concentration while transmitting the clamping force of the hand of an operator to the tooth root; under the free closed state of two pincers handles, be provided with the interval between the terminal blade of two pincers beak centre gripping sections, effectively hold the root of a tooth, effectively avoided conventional root of a tooth pincers to only rely on medical personnel's experience to judge the condition of the broken tooth root of a tooth that the power of carrying on is led to and is controlled, guaranteed going on smoothly of tooth extraction, avoid causing more misery for the disease.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

Fig. 4 is a partial structure diagram of the nipper beak clamping section.

In the attached drawing, 1-forceps handle, 2-forceps beak clamping section, 3-forceps beak force arm section, 4-cambered surface groove, 5-through hole and 6-forceps beak.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the forceps comprise a forceps handle 1 and a forceps beak 6, the forceps handle and the forceps beak are connected through a joint, and the two forceps handles are hinged through the joint, wherein the forceps beak 6 comprises a forceps beak clamping section 2 and a forceps beak force arm section 3, an obtuse angle formed between the forceps beak clamping section 2 and the forceps beak force arm section 3 is an angle of alpha more than 100 degrees and less than 110 degrees, and a plane formed by the forceps beak clamping section 2 and the forceps beak force arm section 3 is perpendicular to an opening plane of the forceps handles; under two pincers handles 1 free closed state, be provided with 0.5 ~ 1 contained angle between 3 opposite flanks of two pincers beak power arm sections, the summit of contained angle is close to the articulated shaft, be provided with 2 ~ 3 mm's interval between 2 terminal edges of two pincers beak clamping section, press from both sides including two segmentation, at first give a pretightning force of pincers handle, the contained angle summit of two pincers beak power arm sections is inconsistent until, the pretension has been accomplished this moment promptly, when extracting teeth, further exert a great effort for the pincers handle, at this moment, the contained angle between two pincers beak power arm sections opposite flanks reduces, interval when the pretension is less than between the pincers beak clamping section, press from both sides tight root of a tooth, provide sufficient strength and extract teeth.

As shown in fig. 2, a plurality of circular through holes 5 are formed in the forceps handle 1, the cross section of the forceps handle 1 from the tail end to the hinged part is unchanged in shape, the area is gradually reduced, the size of each through hole 5 is correspondingly reduced, and an obtuse angle is formed between the forceps beak clamping section 2 and the forceps beak force arm section 3.

The thickness and the width of the forceps beak force arm section 3 are gradually reduced from the hinged part to the bending part of the forceps beak 6, and the cross sectional area of the forceps beak force arm section 3 is smaller than that of the forceps handle 1; the outer side surface of the forceps handle 1 is designed to be a cambered surface, and the forceps handle 1 is provided with a plurality of round through holes, so that an operator feels comfortable when holding the forceps handle, and the forceps handle is uniform in force and not easy to slip off.

As shown in fig. 3 and 4, two 2 end section opposite faces of pincers beak centre gripping section are provided with corresponding cambered surface recess 4, and the both ends width of cambered surface recess 4 is less than its belly width, and from 4 initial departments of cambered surface recess of pincers beak centre gripping section 2 to pincers beak centre gripping section 2 end, the thickness of cambered surface recess 4 reduces gradually to at 2 end formation blades of pincers beak centre gripping section.

When a tooth root needs to be pulled out, the forceps beak 6 extends into the oral cavity, a space is arranged between the two forceps beak clamping sections 2 according to actual needs, the tooth root is positioned between the two forceps beak clamping sections 2, then the two forceps handles 1 are tightly held by force, the forceps beak clamping sections 2 form primary clamping on the tooth root, the forceps handles 1 are continuously and tightly held by force, the tooth root is clamped by the forceps beak clamping sections 2 under the clamping force transmitted from the forceps handles 1, the included angle of the forceps beak force arm sections is slowly reduced, an operator continuously exerts force until the clamping force is enough to pull out the tooth root, the forceps handles 1 are also elastically deformed, the buffering effect is achieved again, the clamping force is further transmitted to the tooth root, the clamping force is loaded to the tooth root at a stable speed in the whole process, the phenomenon that the tooth root is crushed due to the over-fast loading of the clamping force is avoided, and the clamping is stable; the arc-shaped groove 4 of the clamp handle clamping section 2 can also be elastically deformed in the process of clamping the tooth root, and meanwhile, the width of the two ends of the arc-shaped groove 4 is smaller than the width of the abdomen of the tooth root, so that the tooth root can be favorably encircled, the contact surface between the tooth root and the tooth root is increased, the risk that the tooth root is crushed is further reduced, the tooth root is finally pulled out integrally, the tooth groove is favorably protected, and then sufficient bone mass and good bone mass are provided for later-stage implantation and repair.

The utility model is optimized, each part is a matte surface; the distance between the cutting edges of the forceps beak clamping section 2 is 2-3 mm; the obtuse angle formed between the forceps beak clamping section 2 and the forceps beak force arm section 3 is more than 100 degrees and less than 110 degrees; the length of the beak force arm section 3 is 30-35 mm, and the length of the beak clamping section 2 is 18-22 mm; the widest position of the inner side surface of the cambered surface groove 4 is 4-6 mm.

Claims (10)

1. A novel mandibular stump forceps is characterized by comprising a forceps handle (1) and a forceps beak (6) which are hinged through a joint, wherein the forceps beak (6) comprises a forceps beak clamping section (2) and a forceps beak force arm section (3), an obtuse angle alpha is formed between the forceps beak clamping section (2) and the forceps beak force arm section (3), and a plane formed by the forceps beak clamping section (2) and the forceps beak force arm section (3) is perpendicular to an opening plane of the forceps handle; under the free closed state of the two forceps handles (1), a space is arranged between the opposite surfaces of the tail ends of the two forceps beak clamping sections (2).

2. The new mandibular stump forceps according to claim 1, wherein the thickness and width of the beak force arm section (3) decreases from the hinge to the bend of the beak (6), the cross-sectional area of the beak force arm section (3) being smaller than the cross-sectional area of the handle (1).

3. The new mandibular stump forceps according to claim 1, wherein the opposing faces of the distal sections of the two forceps beak clamping sections (2) are provided with corresponding arc grooves (4), and the width of the two ends of the arc grooves (4) is smaller than the width of the abdomen.

4. The new mandibular stump forceps according to claim 1, wherein the thickness of the curved recess (4) decreases gradually from the beginning of the curved recess (4) of the beak gripping section (2) to the end of the beak gripping section (2) and forms a cutting edge at the end of the beak gripping section (2).

5. The new mandibular stump forceps according to claim 1, characterized in that the forceps handle (1) is provided with a number of circular through holes (5).

6. The novel mandibular stump forceps according to claim 1, wherein the distance between the cutting edges at the distal end of the forceps beak clamping section (2) is 2-3 mm.

7. The novel mandibular stump forceps according to claim 1, characterized in that the forceps handle (1) and the forceps beak (6) are matte surfaces, the outer side of the forceps handle (1) is designed as a curved surface, and the obtuse angle formed between the forceps beak gripping section (2) and the forceps beak force arm section (3) is 100 ° < α < 110 °.

8. The new mandibular stump forceps according to claim 1, wherein the length of the forceps beak clamping section (2) is 18-22 mm and the length of the forceps beak force arm section (3) is 30-35 mm.

9. The new mandibular stump forceps according to claim 1, wherein the outer surface of the forceps beak (6) is coated with an antimicrobial coating.

10. A new mandibular stump forceps according to claim 1, characterised in that the opposing sides of the beak force arm section (3) are provided with an included angle of 0.5 ° to 1 ° with the apex of the included angle being close to the hinge axis.

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