阅读说明：本技术 一种下牙槽神经分离器、下牙槽神经镊及下牙槽神经探查工具包 (Lower alveolar nerve separator, lower alveolar nerve forceps and lower alveolar nerve probing kit ) 是由 许向亮 王恩博 于 2020-08-27 设计创作，主要内容包括：本申请提供一种下牙槽神经分离器、下牙槽神经镊以及下牙槽神经探查工具包,具体地,所述下牙槽神经分离器包括手柄,在所述手柄的至少一端设置有连接部,在所述连接部外部固定包覆有剥离件,所述剥离件具有弹性；所述下牙槽神经镊包括两个镊臂,每个所述镊臂均依次包括握持部、矢状弯曲部和竖直弯曲部,在每个所述竖直弯曲部前端均设置有镊取头,两个所述镊取头近似平行,并且,所述镊取头具有弹性。在下颌智齿拔除术中,利用所述下牙槽神经分离器以及所述下牙槽神经镊,在可视条件下可对下牙槽神经的受损情况及时进行探查和修复。(The application provides a lower alveolar nerve separator, lower alveolar nerve forceps and a lower alveolar nerve probing kit, and particularly the lower alveolar nerve separator comprises a handle, wherein at least one end of the handle is provided with a connecting part, a stripping part is fixedly coated outside the connecting part, and the stripping part has elasticity; the inferior alveolar nerve forceps comprise two forceps arms, each forceps arm sequentially comprises a holding part, a sagittal bending part and a vertical bending part, each forceps head is arranged at the front end of the vertical bending part and approximately parallel to the forceps head, and the forceps heads are elastic. In the mandibular wisdom tooth extraction, the damaged condition of the inferior alveolar nerve can be probed and repaired in time under a visual condition by utilizing the inferior alveolar nerve separator and the inferior alveolar nerve forceps.)

1. The lower alveolar nerve separator is characterized by comprising a handle (1), wherein at least one end of the handle (1) is provided with a connecting part (11), a stripping part (2) is fixedly coated outside the connecting part (11), and the stripping part (2) has elasticity.

2. The lower alveolar nerve separator according to claim 1, wherein the shore hardness of the exfoliation member (2) is 55HD to 80HD, preferably 60HD to 70 HD.

3. The lower alveolar nerve separator according to claim 1 or 2, wherein the stripper (2) is spoon-shaped, and the outer diameter of the stripper (2) is gradually reduced, then gradually increased, and finally gradually reduced from the proximal end to the distal end of the stripper (2).

4. The lower alveolar nerve separator according to any one of claims 1 to 3,

the radian of the stripping piece (2) is pi/72-pi/18, preferably pi/36; and/or

The stripping part (2) comprises a wrapping part (21) and a nerve separation part (22), wherein the wrapping part (21) wraps the outside of the connecting part (11), and the length of the nerve separation part (22) is 0.5-1.5 cm, preferably 1 cm.

5. The lower alveolar nerve separator according to any one of claims 1 to 4, wherein the stripper (2) is defined by a top surface (23) and a bottom surface (24), wherein the top surface (23) has a first predetermined angle with the handle (1), the first predetermined angle being 90 ° to 150 °, preferably 110 ° to 135 °.

6. The lower alveolar nerve forceps are characterized by comprising two forceps arms (3), each forceps arm (3) sequentially comprises a holding part (31), a sagittal bending part (32) and a vertical bending part (33), a forceps taking head (34) is arranged at the front end of the vertical bending part (33), the forceps taking head (34) is elastic, and the forceps taking heads (34) are arranged on the two forceps arms (3) and are approximately parallel.

7. Lower alveolar nerve forceps according to claim 6, wherein the sagittal curvature portion (32) and the grip portion (31) have a second preset angle therebetween, which may be 120 ° to 160 °, preferably 130 ° to 150 °.

8. The inferior alveolar nerve forceps according to claim 6 or 7, wherein two vertical bending portions (33) are oppositely arranged, the vertical bending portions (33) and a holding surface form a fourth preset angle, the holding surface is a plane formed by the holding portion (31) and the sagittal bending portion (32) on the forceps arm on one side, and the fourth preset angle is 85 ° to 95 °, such as 90 °.

9. The forceps for the lower alveolar nerve according to any one of claims 6 to 8, wherein a stop rod (35) for preventing excessive forceps closing is arranged on the holding part (31) of at least one forceps arm (3), the stop rod (35) can enable the forceps for the lower alveolar nerve to be in a minimum clamping position, and the width between the outermost sides of the two forceps taking heads (34) is kept within the range of 0.5-0.8 cm, preferably 0.6 cm.

10. An inferior alveolar nerve probing kit, comprising the inferior alveolar nerve separator according to any one of claims 1 to 5 and the inferior alveolar nerve forceps according to any one of claims 6 to 9.

Technical Field

The application belongs to the field of medical equipment, in particular to a lower alveolar nerve separator, lower alveolar nerve forceps and a lower alveolar nerve probing kit.

Background

The extraction of the mandibular wisdom tooth, mandibular third molar, is one of the most common surgical procedures in oral and maxillofacial surgery. The lower Alveolar Nerve (IAN) is located in the neural canal of the mandible, and is closely related to the wisdom teeth of the mandible. Because the mandibular wisdom tooth is located deep, operating space is limited, and is close to the IAN, the IAN may be damaged during removal of the mandibular wisdom tooth. IAN, if damaged, may cause the symptoms of the patient such as permanent or permanent lower lip numbness or paresthesia, affecting the physiology and psychology of the patient, and belonging to more serious complications.

Because the IAN is close to the back of the oral cavity, the operation space is limited, the visual field of a doctor is limited, and no special tool is used for exploring the IAN, at present, in the lower jaw wisdom tooth extraction operation, the damage condition of the IAN is generally not explored, usually, whether the IAN is damaged or not is judged by inquiring whether the lower lip has abnormal feeling or not in the postoperative re-diagnosis, however, the best time of local intervention treatment is missed, the IAN cannot be locally treated even if the IAN is damaged, only the conservative treatment can be carried out by systemic medication, and when the IAN is automatically repaired, the feeling of some patients cannot be completely recovered even after years.

Disclosure of Invention

In order to solve the above problems, the present application provides a lower alveolar nerve separator, a lower alveolar nerve forceps, and a lower alveolar nerve probing kit, specifically, the lower alveolar nerve separator includes a handle, at least one end of the handle is provided with a connecting portion, a stripping member is fixedly wrapped outside the connecting portion, and the stripping member has elasticity; lower alveolar nerve tweezers include two tweezers arms, every the tweezers arm all includes the portion of gripping, sagittal flexion and vertical flexion in proper order every vertical flexion front end all is provided with tweezers and gets the head, two tweezers are got the head and are similar parallel, and, tweezers are got the head and have elasticity, and in the art is pulled out to jaw wisdom tooth down, utilize alveolar nerve separator and alveolar nerve tweezers down can in time explore and restore IAN's impaired condition under visual condition.

The present application aims to provide the following aspects:

in a first aspect, the present application provides a lower alveolar nerve separator, including handle 1's at least one end is provided with connecting portion 11 the fixed cladding of connecting portion 11 outside has stripping member 2, stripping member 2 has elasticity.

Optionally, the handle 1 is integrally formed with the connecting portion 11.

Further, the handle 1 and the connecting portion 11 are formed by processing rigid materials such as medical metals, wherein the medical metals include medical stainless steel, medical nickel alloy, medical titanium alloy and the like.

Alternatively, the stripping member 2 is made of an elastic material, wherein the elastic material includes medical rubber, medical silica gel, etc., so as to obtain the elastic performance of the nerve separating end.

In an achievable manner, the handle 1 can be a cylinder, a prism or a flat, preferably flat.

Optionally, the handle 1 is provided with anti-slip threads, and the anti-slip threads include regularly arranged convex points, threads and the like.

Optionally, a damping element is arranged on the antiskid thread 12.

In an achievable manner, a surface treatment agent is also provided outside the connection portion 11 for improving the connection stability between the connection portion 11 and the stripping member 2.

In an achievable form, the connecting portion 11 has an outer diameter smaller than the outer diameter of the handle 1, optionally the connecting portion 11 is coaxial with the handle 1.

In a practical form, the shore hardness of the stripping member 2 is 55HD to 80HD, preferably 60HD to 70 HD. The applicant finds that under the condition that the shore hardness of the stripping part 2 is within the range, the IAN can be conveniently separated, and the stripping part 2 can be prevented from damaging the IAN, so that the IAN can be probed.

In an implementable manner, the stripper 2 is spoon-shaped, in particular the outer diameter of the stripper 2 first gradually decreases, then gradually increases and finally gradually decreases from the connection 11 to the free end of the stripper 2, i.e. the working end extremity of the stripper 2.

Alternatively, the outer diameter of the stripper 2 is largest at the end of the connecting portion 11.

In a realisable manner, the radian measure of the stripping member 2 is from pi/72 to pi/18, preferably pi/36; and/or the stripping element 2 comprises a wrapping part 21 and a nerve separation part 22, wherein the wrapping part 21 wraps the outside of the connecting part 11, the nerve separation part 22 is used for completing cleaning stripping and other operations, and the length of the nerve separation part 22 is 0.5-1.5 cm, preferably 1 cm.

Under the condition that the lower alveolar nerve is exposed, the tooth extracting socket is approximately in an ellipsoid shape, so that the working end of the stripping part has a specific radian, and the lower alveolar nerve can be more favorably explored. Further, the root diameter of the crown of the mandibular third molar is generally about 1.0cm and the depth of the space occupied by the tooth root is about 1.3cm, based on which the working end is designed to be the size described above. It will be appreciated that for pediatric patients, the device may be manufactured in an equal scale down according to the above-mentioned proportions, and for individual patients who do not fit the above-mentioned dimensions, the size of the corresponding portion may be individually adjusted as required to meet the exploration requirements.

In an achievable manner, the length of the connecting portion 11 is 1.5 to 3cm, preferably 2 cm; and/or the thickness of the stripping part 2 is 0.1-0.4 cm, preferably 0.2 cm. The applicant has found that the length of the connecting portion is within the above range, which enables the peeling member and the connecting portion to be more reliably joined. Further, the thickness of the peeling member 2 is within the above range, so that the peeling member 2 is generally thin, thereby realizing fine separation of the IAN and reducing the risk of damage to the IAN.

In an achievable manner, the handle 1 has a length of 12 to 25cm, preferably 16cm, and the handle 1 has a width of 0.6 to 1.0cm, preferably 0.8 cm. Since the distance from the upper lip to the base of the third molar of the mandible of an adult is typically about 8cm, the handle is designed to be of the above length for ease of handling. It will be appreciated that for pediatric patients, the device may be manufactured in an equal scale down according to the above-mentioned proportions, and for individual patients who do not fit the above-mentioned dimensions, the size of the corresponding portion may be individually adjusted as required to meet the exploration requirements.

In an realizable manner, the stripping member 2 is enclosed by a top surface 23 and a bottom surface 24, wherein the top surface 23 may be a plane or a curved surface, and if the top surface 23 is a curved surface, the top surface 23 is concave toward the bottom surface 24; the bottom surface 24 is a curved surface, and the bottom surface 24 is convex in a direction away from the top surface 23.

Optionally, a first preset angle is formed between the top surface 23 and the handle 1, and the first preset angle is 90 ° to 150 °, and preferably 110 ° to 135 °. In this application, first predetermined angle does top surface 23 with the contained angle between the face is connected on the handle 1. If the top surface 23 is a curved surface, the first preset angle is an included angle between a tangent line of the top surface at a position where the top surface is connected with the handle 1 and the surface of the handle. The applicant has found that the first predetermined angle is within the above range, allowing easy probing of the IAN. Usually, the IAN is located at the bottom of the mandibular wisdom tooth socket, and the curved working end can be more useful to explore. In some cases, the IAN needs to be lifted from the bottom of the extraction socket for processing, which can be achieved with a working end with an angle of 90 deg..

Specifically, the thickness of the stripping member 2 may gradually decrease from its surrounding portion to its nerve separating portion 22, or may increase and then decrease.

In an achievable manner, a calibration groove 25 is further provided on the top surface 23, optionally the width of the calibration groove 25 is 0.5-1.0 mm, so as to facilitate viewing the range of IAN exposure and damage and the depth of investigation in contrast.

In a second aspect, the present application further provides a lower alveolar nerve forceps, the lower alveolar nerve forceps includes two forceps arms 3, two forceps arms 3 all include gripping portion 31, sagittal curvature portion 32 and vertical curvature portion 33 in proper order, at every vertical curvature portion 33 front end is provided with a forceps taking head 34, two the forceps taking head 34 is approximately parallel, and the forceps taking head 34 has elasticity.

In an achievable way, one end of the two holding parts 31 is fixedly connected, and the distance between the two forceps heads 34 is 0.5 cm-0.8 cm, preferably 0.6 cm-0.7 cm under a natural state.

In an achievable manner, the grip part 31 is oblong and has a length of 12 to 30cm, preferably 22 cm; the width is 0.6-1.0 cm, preferably 0.8 cm; the thickness is 0.1-0.4 cm, preferably 0.2 cm.

In the section below one third from the working end, the width gradually becomes smaller to two thirds of the widest position. Since the main operation space of the nerve forceps is positioned in the mandibular wisdom tooth extracting socket, the smaller working end is more beneficial to clinical operation while maintaining the clamping function of the working end.

In an implementable manner, the sagittal curvature 32 and the grip 31 have a second predetermined angle therebetween, which may be 120 ° to 160 °, preferably 130 ° to 150 °. The applicant found that the range of the angle between the apex of the tooth and the whole margin of the tooth is about 30 ° in terms of the ratio of the width of the crown to the length of the tooth of the mandibular wisdom tooth, and therefore, the second preset angle is within the above range, which is advantageous for the exploration of IAN.

In an achievable manner, an arc-shaped transition 36 is provided between the sagittal curvature 32 and the vertical curvature 33, the arc of the transition 36 being pi/72 to pi/18, preferably pi/24.

Optionally, the transition portion 36 is made of metal on the outer side and made of an elastic material, such as silicone, with a shore hardness of 55HD to 80HD, preferably 60HD to 70 HD.

Further, the sagittal curvature section 32 has a length of 0.8 to 1.5cm, preferably 1cm, from the front end to the end, i.e., the front end of the vertical curvature section; the sagittal curvature 32 has a width of about two thirds of the width of the grip; the thickness is 0.1-0.4 cm, preferably 0.15 cm. Therefore, the process of clamping the lower alveolar nerves can avoid shielding visual equipment and keep good sight.

Optionally, in a natural state, the distance between the tail ends of the sagittal curvature portion 32 is 0.9-1.5 cm, preferably 1cm, and the sagittal curvature portion is suitable for the range of mandibular wisdom tooth extraction sockets.

Optionally, there is a third predetermined angle between the two sagittal bends 32, which is 5 ° to 10 °, and the sagittal bends continue at right angles to the vertical bends.

Further, the distance between the two sagittal curvature portions 32 near the end of the grip portion 31 is smaller than the distance between the two ends near the vertical curvature portions.

In an achievable manner, the two vertical bends 33 are arranged opposite to each other, and a fourth predetermined angle is provided between the vertical bends 33 and the holding surface, which is the plane formed by the holding portion 31 and the sagittal bend 32 on the one-sided forceps arm, and the fourth predetermined angle is 85 ° to 95 °, for example 90 °.

In an achievable manner, the length of the vertical bend 33 may be 0.2-0.4 cm, preferably 0.2 cm; the width is 0.1-0.5 cm, preferably 0.4 cm. So as to protect the nerve and avoid injury during the pulling of IAN.

Optionally, the forceps head 34 is made of silicone, and the shore hardness thereof may be 55HD to 80HD, preferably 60HD to 70 HD.

In an achievable manner, a stop rod 35 for preventing excessive forceps-in is arranged on the holding part 31 of at least one forceps arm 3, the length of the stop rod 35 can be specifically set according to the specific position thereof, so that the lower alveolar nerve forceps are in the minimum clamping position, and the working end width between the outermost sides of the two forceps heads 34 is kept between 0.5cm and 0.8cm, preferably 0.6 cm.

In a third aspect, the present application also provides a lower alveolar nerve probing kit comprising the lower alveolar nerve separator of the first aspect and the lower alveolar nerve forceps of the second aspect.

Compared with the prior art, the elastic stripping piece is arranged at the part, which is in contact with the IAN, of the lower alveolar nerve separator, the length of the lower alveolar nerve separator is sufficient, the preset shape of the stripping piece can conveniently penetrate between the IAN and the bone and clean the surface and the periphery of the IAN, and the elasticity of the stripping piece can reduce or avoid damage to the IAN; the lower alveolar nerve forceps are provided with elastic forceps taking heads at the parts contacted with the IAN, and the IAN can be conveniently pulled and explored by utilizing the preset shape of the lower alveolar nerve forceps, and the nerve repairing operation, such as nerve restoration, medicine placement and the like, can be assisted, so that the damaged IAN is subjected to injury repairing treatment.

Drawings

FIG. 1 shows a schematic view of an IAN not located entirely in the mandibular nerve canal;

FIG. 2a is a schematic diagram showing the overall structure of a preferred lower alveolar nerve separator of the present application;

FIG. 2b shows a schematic view of a preferred stripper of the present example;

FIG. 2c shows a side view of the stripper of FIG. 2 b;

FIG. 2d shows a side view of another preferred stripper;

FIG. 2e shows a side view of another preferred stripper;

fig. 3 shows a schematic view of a preferred lower alveolar nerve forceps structure of the present application.

Description of the reference numerals

1-handle, 11-connecting part, 12-anti-skid stripe, 2-stripping part, 21-wrapping part, 22-nerve separating part, 23-top surface, 24-bottom surface, 25-scale groove, 3-forceps arm, 31-holding part, 311-holding upper part, 312-holding lower part, 32-sagittal bending part, 33-vertical bending part, 34-forceps head, 35-stopping rod and 36-transition part.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of methods consistent with certain aspects of the invention, as detailed in the appended claims.

The lower alveolar nerve exploration tool and kit provided by the present application are described in detail below by way of specific embodiments.

In general, the IAN is completely located in the nerve canal of the mandible, however, in few cases, the IAN is not completely located in the nerve canal of the mandible, for example, the IAN is located at the apex of the mandible wisdom tooth, specifically, part of the IAN is not covered by bone to form the central section of the IAN to be attached to the bone surface, and both ends of the IAN are still buried in the bone, fig. 1 shows a schematic diagram that the IAN is not completely located in the nerve canal of the mandible, as shown in fig. 1, and the position indicated by the arrow is the IAN exposed in the dental extraction socket.

The IAN is nerve tissue, soft and tough, different from the bone, if the integrity of the IAN is checked, whether the IAN is damaged after tooth extraction is observed, the surface and the surrounding tissues of the IAN need to be cleaned, or the IAN nerve is lifted and then observed, however, no special instrument is used for carrying out the operation at present.

Conventional surgical instruments, even those for neurosurgical operations, are metal instruments, hard in texture, and somewhat careless in nature, can damage nerves, and are not convenient for probing IAN nerves at specific locations in the oral cavity.

Fig. 2a shows a schematic view of the overall structure of a preferred lower alveolar nerve separator of the present application, and as shown in fig. 2a, the lower alveolar nerve separator includes a handle 1, and a connecting portion 11 is provided at least one end of the handle 1, that is, the connecting portion 11 may be provided at one end of the handle, or both ends of the handle 1 may be provided with connecting portions 11, the latter being shown in fig. 2 a.

Since the distance from the upper lip to the base of the third molar of the mandible of an adult is typically about 8cm, the handle is designed to be of the above length for ease of handling. In this example, the handle 1 has a length of 12 to 25cm, preferably 16cm, and the handle 1 has a width of 0.6 to 1.0cm, preferably 0.8 cm. It will be appreciated that for pediatric patients, the device may be manufactured in an equal scale down according to the above-mentioned proportions, and for individual patients who do not fit the above-mentioned dimensions, the size of the corresponding portion may be individually adjusted as required to meet the exploration requirements.

In this example, the handle 1 may be cylindrical, prismatic or flat, preferably flat, to facilitate the practitioner's control of the lower alveolar nerve separator and perform the corresponding operation.

Optionally, the handle 1 is provided with anti-slip threads, and the anti-slip threads comprise regularly arranged convex points and/or threads and the like, so as to increase the holding stability.

Optionally, a damping member is arranged on the anti-slip pattern 12 to increase the holding stability of the lower alveolar nerve separator for a doctor, the damping member is a member having a damping effect with a medical glove or skin, the damping member is made of a medically acceptable material, for example, medical silicone rubber or the like, and the damping member may be a rubber point, a silicone strip or the like.

In this example, the connecting portion 11 may be integrally formed with the handle 1, or may be fixedly mounted on the end surface of the handle 1 by other mounting methods, and preferably, the connecting portion 11 is integrally formed with the handle 1, so that on one hand, the stability of connection can be increased, and on the other hand, it is convenient to keep the space between the handle 1 and the connecting portion 11 clean.

Further, the handle 1 and the connecting portion 11 are made of rigid materials such as medical metals, wherein the medical metals include medical stainless steel, medical nickel alloy, medical titanium alloy and the like.

In this example, the outer diameter of the connecting portion 11 is smaller than the outer diameter of the handle 1, optionally the connecting portion 11 is coaxial with the handle 1.

Further, the length of the connecting portion 11 is 1.5-3 cm, preferably 2cm, and the length of the connecting portion 11 is within the above range, so that the stripping member 2 and the connecting portion 11 can be more reliably combined, and inconvenience due to overlong stripping member 2 caused by overlong connecting portion 11 is avoided.

In this example, the connecting part 11 is fixedly covered with the stripper part 2, and the stripper part 2 has elasticity and is used for contacting with the IAN nerve of the lower alveolus and the surrounding thereof, so as to clean and probe the IAN nerve and the surrounding tissues thereof.

In this example, a surface treatment agent including a blasting agent or the like may be further provided outside the connection part 11 to improve the connection stability between the connection part 11 and the peeling member 2.

In this example, the shore hardness of the stripper 2 is 55HD to 80HD, preferably 60HD to 70 HD. The applicant finds that under the condition that the shore hardness of the stripping part 2 is within the range, the IAN can be conveniently separated, and the stripping part 2 can be prevented from damaging the IAN, so that the IAN can be probed.

In this example, the elasticity of the stripper 2 can be introduced either by the material from which the stripper is made or by the material of the stripper in combination with the specific structure of the stripper.

For example, the peeling member 2 is made of an elastic material including medical rubber, medical silicone, or the like. In this case, the inside of the stripper 2 is solid, and the elasticity of the stripper 2 is provided entirely by the properties of the material itself.

For another example, the peeling member 2 is made of an elastic material, wherein the elastic material includes medical rubber, medical silica gel, etc., and the inside of the peeling member 2 has a hollow cavity with a preset shape, for example, a hollow cavity with a shape similar to that of the peeling member 2 is provided inside the peeling member 2, and optionally, the hollow cavity is not connected to the connecting portion 11. In this case, the elasticity of the stripping member 2 is obtained by the cooperation of the properties of the material itself and the specific structure inside.

The applicant finds that if a structure for increasing the elasticity of the stripping part 2 is arranged in the stripping part 2, the stripping part 2 can be made of a material with relatively low elasticity, so that the stripping part 2 cleans the IAN surface and tissues thereof in a preset shape under the action of small external force, and if the external force is applied to the stripping part too much, the stripping part shows elasticity and can deform to avoid damage to nerves such as the IAN.

In this example, the material and the specific form of its internal structure may be specifically selected according to the elasticity requirements of the stripper 2.

Fig. 2b shows a schematic view of a preferred stripper according to the present example, and as shown in fig. 2b, the stripper 2 may be spoon-shaped, specifically, the outer diameter of the stripper 2 gradually decreases, then gradually increases, and finally gradually decreases from its proximal end, which is the end close to the connecting portion 11, to its distal end, which is the end far from the connecting portion 11.

As shown in fig. 2b, the outer diameter of the peeling member 2 is maximized at the end of the connecting portion 11, so that the peeling member 2 and the handle 1 can be smoothly transited and the connection is stable.

In this example, the stripping member 2 includes a wrapping portion 21 and a nerve separating portion 22, wherein the wrapping portion 21 wraps around the outside of the connecting portion 11, and the nerve separating portion 22 is used for completing cleaning stripping and the like.

In this example, the edge of the nerve separating portion 22 smoothly transitions at the top of the nerve separating portion 22, avoiding the formation of sharp peaks that could cause damage to the IAN.

Since the root diameter of the crown of the mandibular third molar is generally about 1.0cm and the depth of the space occupied by the tooth root is about 1.3cm, for this reason, the nerve separating portion 22 has a length of 0.5cm to 1.5cm, preferably 1cm, in this example. It will be appreciated that for pediatric patients, the device may be manufactured in an equal scale down according to the above-mentioned proportions, and for individual patients who do not fit the above-mentioned dimensions, the size of the corresponding portion may be individually adjusted as required to meet the exploration requirements.

In this example, the maximum thickness of the peeling member 2 is 0.1cm to 0.4cm, preferably 0.2 cm. Further, the maximum thickness of the peeling member 2 is within the above range, so that the peeling member 2 is generally thin, thereby realizing a fine separation operation of the IAN and reducing the risk of damage to the IAN.

In this example, the maximum width of the peeling member 2 is 0.2cm to 0.6cm, preferably 0.4 cm.

Figure 2c shows a side view of the stripper part shown in figure 2b, as shown in figure 2c, the stripper part 2 being in this case surrounded by a top surface 23 and a bottom surface 24, wherein the top surface 23 may be plane or curved and the bottom surface curved.

Specifically, the thickness of the stripping member 2 may gradually decrease from the wrapping portion 21 to the nerve separating portion 22, i.e., from the proximal end to the distal end thereof, or may increase and then decrease.

As shown in fig. 2c, the top surface 23 and the bottom surface 24 are both curved, and the thickness of the stripper 2 gradually decreases from the proximal end to the distal end thereof.

FIG. 2d shows a side view of another preferred stripper, wherein as shown in FIG. 2d, the top surface 23 and the bottom surface 24 are both curved, the top surface 23 is concave toward the bottom surface 24, the bottom surface 24 is convex away from the top surface 23, and the thickness of the stripper 2 gradually increases and then gradually decreases from the proximal end to the distal end thereof.

FIG. 2e shows a side view of another preferred stripper, wherein as shown in FIG. 2e, the top surface 23 is planar, the bottom surfaces 24 are curved, the top surface 23 is concave toward the bottom surface 24, the bottom surface 24 is convex away from the top surface 23, and the thickness of the stripper 2 gradually increases and then gradually decreases from the proximal end to the distal end thereof.

Since the socket is approximately elliptical under the condition of exposing the alveolar nerve, the nerve separating part provided by the present application has a specific curvature, so that the nerve separating part is bent to one side of the handle 1, thereby facilitating the exploration of the alveolar nerve.

In this example, as shown in FIG. 2a, the section a of the peeling member 2 has an arc shape, specifically, an arc of π/72 to π/18, preferably π/36.

Further, a first preset angle α is formed between the top surface 23 and the handle 1, and the first preset angle is 90 ° to 150 °, and preferably 110 ° to 135 °.

In this application, first predetermined angle does top surface 23 with the contained angle between the face is connected on the handle 1. If the top surface 23 is a curved surface, the first preset angle α is an included angle between a tangent line of the top surface at a position where the top surface is connected with the handle 1 and the surface of the handle.

The applicant has found that the first predetermined angle is within the above range, allowing easy probing of the IAN. Usually, the IAN is located at the bottom of the mandibular wisdom tooth socket, and the curved working end can be more useful to explore. In some cases, the IAN needs to be lifted from the bottom of the extraction socket for processing, and this can be achieved using a working end with an angle of 90 deg..

In this example, a calibration groove 25 is further disposed on the top surface 23, and optionally, the width of the calibration groove 25 is 0.5-1.0 mm, so as to facilitate observing the range of the IAN exposure and damage and the probing depth in contrast.

Under the visual field of the endoscope, the lower alveolar nerve can be observed more clearly, so the instrument can be considered to be matched with the endoscope for use.

It will be appreciated that the form of the sections provided at the two ends of the handle may be different, for example, a side view of the section provided at one end of the handle is shown in figure 2b, and a side view of the section provided at the other end of the handle is shown in figures 2c, 2d or 2 e. Similarly, the specific form of the peeling portion provided at both ends of the handle can be specifically set as needed.

Fig. 3 shows a structural schematic diagram of a preferred lower alveolar nerve forceps of the present application, as shown in fig. 3, the lower alveolar nerve forceps includes two forceps arms 3, the two forceps arms 3 sequentially include a holding portion 31, a sagittal bending portion 32 and a vertical bending portion 33, a forceps pick-up head 34 is disposed at a front end of each vertical bending portion 33, the two forceps pick-up heads 34 are approximately parallel, and the forceps pick-up heads 34 have elasticity.

In this example, one end of each of the two holding portions 31 is fixedly connected, and the formed connection point is a pivot point of the swinging of the two forceps arms.

In a natural state, the distance between the two forceps heads 34 is 0.5 cm-0.8 cm, preferably 0.6 cm-0.7 cm, so as to be convenient for storage and use.

In this example, the grip portion 31 is oblong and has a length of 12cm to 30cm, preferably 22 cm; the width is 0.6 cm-1.0 cm, preferably 0.8 cm; the thickness is 0.1 cm-0.4 cm, preferably 0.2cm, and is suitable for oral space for operation at a specific position.

In this example, an inner bend is provided at the middle of the grip portion 31 to form a grip upper portion 311 and a grip lower portion 312, so that the grip lower portions 312 on the two forceps walls are parallel to each other in the working state to facilitate the forceps-taking operation.

Further, in a section less than one third away from the working end, the width of the holding part 31 is gradually reduced to about one third of the widest part, so that the working end is more beneficial to clinical operation in the mandibular wisdom tooth extracting socket under the condition of keeping the clamping function of the working end.

In this example, the sagittal curvature portion 32 and the holding portion 31 have a second preset angle β therebetween, so that the sagittal curvature portion 32 protrudes out of the plane formed by the two holding portions 31, and the second preset angle β may be 120 ° to 160 °, and preferably 130 ° to 150 °. Because the angle range of the tooth root apex and the whole tooth crown edge is about 30 degrees according to the proportion of the tooth crown width to the tooth length of the mandible wisdom tooth, the second preset angle is in the range, which is beneficial to probing the IAN.

In this example, an arcuate transition 36 is provided between the sagittal curvature 32 and the vertical curvature 33, the transition 36 having an arc of π/72 to π/18, preferably π/24.

Optionally, the transition portion 36 is made of metal on the outer side and made of an elastic material, such as silicone, with a shore hardness of 55HD to 80HD, preferably 60HD to 70HD, so that the damage to the nerve can be reduced even if the transition portion 36 contacts with the lower alveolar nerve during use of the lower alveolar nerve forceps.

Further, the sagittal curvature section 32 has a length of 0.8 to 1.5cm, preferably 1cm, from the front end to the end, i.e., the front end of the vertical curvature section; the sagittal curvature 32 has a width of about two thirds of the width of the grip, e.g., 0.8 to 1.5cm, preferably 1 cm; the thickness is 0.1-0.4 cm, preferably 0.15 cm. Therefore, the process of clamping the lower alveolar nerves can avoid shielding visual equipment and keep good sight.

Optionally, in a natural state, the distance between the tail ends of the sagittal curvature portion 32 is 0.9-1.5 cm, preferably 1cm, and the sagittal curvature portion is suitable for the range of mandibular wisdom tooth extraction sockets.

Optionally, there is a third preset angle γ between the two sagittal bends 32, said third preset angle γ being comprised between 5 ° and 10 °, suitable for operating in the mouth.

Further, the distance between the two sagittal curvature portions 32 near the end of the grip portion 31 is smaller than the distance between the two ends near the vertical curvature portion 33.

In the present example, two vertical bending portions 33 are oppositely arranged, a fourth preset angle θ is formed between the vertical bending portion 33 and the holding surface, the holding surface is a plane formed by the holding portion 31 and the sagittal bending portion 32 on the one-side forceps arm, and the fourth preset angle θ is 85 ° to 95 °, for example, 90 °.

In this example, the working ends of the two vertical bending portions 33 are in a staggered contact mode, the tips are staggered and not aligned, and in the process of clamping the lower alveolar nerve in practical application, the vertical bending portions 33 are located below the lower alveolar nerve to play a role of pulling the nerve.

In this example, since the diameter of the alveolar neurovascular bundle is generally about 0.4cm, the length of the vertical bent portion 33 may be 0.2cm to 0.4cm, preferably 0.2 cm; the width is 0.1cm to 0.5cm, preferably 0.4cm, in order to protect the nerve from injury during pulling of the IAN.

Optionally, the forceps head 34 may be made of medical elastic material such as medical silica gel and medical rubber, and the shore hardness thereof may be 55HD to 80HD, preferably 60HD to 70 HD.

In this example, a stop rod 35 for preventing excessive clamping is arranged on the holding part 31 of at least one forceps arm 3, and the length of the stop rod 35 can be specifically set according to the specific position thereof, so that the width of the working end between the outermost sides of the two forceps picking heads 34 is kept between 0.5cm and 0.8cm, preferably 0.6cm, at the minimum clamping position, thereby ensuring that the distance between the working ends is not too small during the process of clamping the nerve by the lower alveolar nerve forceps, and the nerve is damaged by compression.

Furthermore, the stop rod can be made of medical metal, or made of elastic material, such as silica gel, or the metal framework is coated with the elastic material to achieve the purpose of shock absorption.

Further, the present application also provides a lower alveolar nerve probing kit, which includes the aforementioned lower alveolar nerve separator and the aforementioned lower alveolar nerve forceps.

The following describes a method for using the lower alveolar nerve separator and the lower alveolar nerve forceps provided by the present application as a specific example:

lower jaw wisdom tooth extraction and lower alveolar nerve exploration: after the conventional anesthesia takes effect, the towel is disinfected, the existing surgical instruments are used, mucous membranes are cut, flaps are turned, a power system is used for removing bones, separating teeth, supporting and loosening, and the crowns and the roots of wisdom teeth are removed in blocks. Fully stanch, utilize the endoscope to observe the extraction cavity bone wall, combine CT image science condition before the art, observe the neural exposure condition of lower alveolus. If the nerve capsule is incomplete, even if the nerve is clamped, pressed and pulled to cause displacement, the nerve damage condition is probed by utilizing the lower alveolar nerve separator and the lower alveolar nerve forceps for light stripping and pulling, corresponding treatment is carried out, the operations of removing clamping pressure, cleaning bone fragments, resetting the nerve and the like are carried out, and corresponding medicines are placed when necessary to promote nerve repair; if the nerve capsule is intact, the wound is irrigated, sutured and pressed to stop bleeding, thus completing the operation.

Compared with the prior art, the elastic stripping piece is arranged at the part, which is in contact with the IAN, of the lower alveolar nerve separator, the length of the lower alveolar nerve separator is sufficient, the preset shape of the stripping piece can conveniently penetrate between the IAN and the bone and clean the surface and the periphery of the IAN, and the elasticity of the stripping piece can reduce or avoid damage to the IAN; the lower alveolar nerve forceps are provided with elastic forceps taking heads at the parts contacted with the IAN, and the IAN can be conveniently pulled and explored by utilizing the preset shape of the lower alveolar nerve forceps, and the nerve repairing operation, such as nerve restoration, medicine placement and the like, can be assisted, so that the damaged IAN is subjected to injury repairing treatment.

Specifically, the lower alveolar nerve separator and the lower alveolar nerve forceps provided by the application have the following effects:

(1) the lower alveolar nerve separator and the lower alveolar nerve forceps are provided with elastic silicon rubber working ends, so that the nerve can be well protected in the processes of cleaning peripheral tissues and separating nerve fibers in bone pits, the damage to the nerve can be reduced, and the handle is made of medical metal, so that the handle is convenient to hold and the usability is improved;

(2) for the examination and operation of the lower alveolar nerve, no special effective tool exists at present, and the tool provided by the application can clearly observe and explore the exposed lower alveolar nerve, particularly with the assistance of an endoscope;

(3) a convex-concave millimeter scale is arranged on the surface of the stripping part of the lower alveolar nerve separator, so that the range of exposed and damaged nerves can be measured in an auxiliary manner; therefore, during operation, the endoscope shoots and collects the nerve images and can collect the length scale together, so that the postoperative analysis is convenient, and the measurement data is obtained;

the present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.