Inferior alveolar nerve block anesthesia injection auxiliary equipment

Abstract

The utility model relates to the technical field of medical instruments, and discloses inferior alveolar nerve block anesthesia injection auxiliary equipment, which is beneficial for medical staff to timely and accurately find a needle insertion point for inferior alveolar anesthesia by arranging a positioning ball and a guide cylinder; when the inferior alveolar anesthesia is carried out, the patient expands the mouth to expose the mandible condyle process (the needle insertion point position during the inferior alveolar anesthesia) near the anterior notch of the tragus, and the positioning ball is pressed against the convex part of the mandible condyle; a medical worker holds the auxiliary equipment by hand, the other hand inserts an injector into the guide cylinder, and due to the fact that the axial extension line of the guide cylinder passes through the center of the positioning ball, the medical worker can quickly find and position a needle inserting point in an oral cavity under the guidance of the guide cylinder; the operation difficulty is lowered, meanwhile, the requirement for personal skills of medical staff is lowered, the one-time success probability of anesthesia is improved, and the situation that a patient suffers from unnecessary pain due to multiple anesthesia failures is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an auxiliary device for inferior alveolar nerve block anesthesia injection. Background Technology

[0002] Effective anesthesia is essential for successful oral treatment. Taking mandibular anesthesia as an example, inferior alveolar nerve block is one of the most commonly used techniques, but its failure rate or incomplete anesthesia is 15%–20%. The Gow-Gates method (proposed by Australian dentist Gow-Gates) is a modified mandibular nerve block anesthesia method that moves the injection point upwards from the conventional site to the condylar neck, effectively improving the success rate of inferior alveolar nerve block anesthesia. However, the Gow-Gates method involves a deeper injection site, requiring a high level of precision in localization and needle insertion. It generally requires a senior dentist with a deep understanding of local anatomy. Incorrect localization or repeated punctures may lead to local intracranial hematoma or even temporary facial paralysis. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary device for inferior alveolar nerve block anesthesia injection, which solves the problems of low success rate and high skill requirements for medical personnel in the prior art for inferior alveolar nerve block anesthesia.

[0004] To achieve the above objectives, embodiments of this application provide an auxiliary device for inferior alveolar nerve block anesthesia injection, comprising:

[0005] The first arc-shaped rod has a first end and a second end, and the first end is provided with a positioning ball;

[0006] The second arc-shaped rod has a third end and a fourth end. The third end is provided with a guide cylinder, and the center of the positioning ball is located on the extension line of the axial direction of the guide cylinder.

[0007] A telescopic component is disposed between the second end and the fourth end, and both the second end and the fourth end are connected to the telescopic component.

[0008] In some embodiments of this application, the telescopic assembly includes a first telescopic rod and a second telescopic rod; the first telescopic rod is connected to the second end at one end away from the second telescopic rod, and the second telescopic rod is connected to the fourth end at one end away from the first telescopic rod.

[0009] The first telescopic rod has a sliding cavity, and the second telescopic rod is axially slidably installed in the sliding cavity. The first telescopic rod is provided with a clamping assembly, which is used to clamp and position the second telescopic rod.

[0010] In some embodiments of this application, the clamping assembly includes a compression cylinder coaxially sleeved on the outer periphery of the first telescopic rod, and the compression cylinder is movable along the axial direction of the first telescopic rod.

[0011] The first telescopic rod is coaxially connected to an elastic conical sleeve at the end opposite to the first arc-shaped rod. The elastic conical sleeve has a small-diameter end close to the first telescopic rod and a large-diameter end away from the first telescopic rod.

[0012] The extrusion cylinder moves toward the elastic conical sleeve, so that one end of the extrusion cylinder is fitted onto the outside of the elastic conical sleeve, and radially extrudes the elastic conical sleeve, causing the elastic conical sleeve to contract radially.

[0013] In some embodiments of this application, the extrusion cylinder is coaxially connected to an internally threaded component at one end away from the second telescopic rod, and a portion of the outer peripheral wall of the first telescopic rod is provided with a threaded portion that mates with the internally threaded component; rotating the internally threaded component drives the extrusion cylinder to move axially along the first telescopic rod.

[0014] In some embodiments of this application, the periphery of the elastic conical sleeve has a plurality of contraction grooves arranged axially spaced around the first telescopic rod, and the contraction grooves are arranged radially through the elastic conical sleeve.

[0015] In some embodiments of this application, the elastic tapered sleeve is an elastic rubber component.

[0016] In some embodiments of this application, the sliding cavity is provided with a guide rod extending axially along the first telescopic rod, and the second telescopic rod is provided with a guide hole that cooperates with the guide rod;

[0017] The guide rod and the guide hole are used to restrict the circumferential rotation between the first telescopic rod and the second telescopic rod.

[0018] In some embodiments of this application, the guide cylinder is detachably connected to the third end.

[0019] In some embodiments of this application, the third end is provided with a clamping cylinder that matches the guide cylinder. The guide cylinder is coaxially inserted inside the clamping cylinder. The wall of the clamping cylinder is threaded with an abutment member along the radial direction. The abutment member abuts against the outer wall of the guide cylinder.

[0020] In some embodiments of this application, the guide cylinder is an ABS resin structural component.

[0021] Compared with existing technologies, the beneficial effects of this invention's inferior alveolar nerve block anesthesia injection auxiliary device are as follows: This solution, by setting a positioning ball and a guide tube whose axial extension passes through the center of the positioning ball, helps medical personnel to locate the injection point for inferior alveolar anesthesia in a timely and accurate manner. Specifically, during inferior alveolar anesthesia, the patient opens their mouth wide to expose the mandibular condyle near the anterior tragus notch (i.e., the injection point for inferior alveolar anesthesia), and the positioning ball is pressed against the protruding part of the mandibular condyle. The medical personnel hold the auxiliary device in one hand and insert the syringe into the guide tube with the other. Because the axial extension of the guide tube passes through the center of the positioning ball, the syringe, guided by the guide tube, allows the medical personnel to quickly locate and position the injection point for inferior alveolar anesthesia within the oral cavity. This reduces the difficulty of anesthesia operation, lowers the skill requirements for medical personnel, increases the probability of successful anesthesia on the first attempt, and avoids unnecessary suffering for patients due to multiple anesthesia failures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the first telescopic rod and the second telescopic rod in their separated states according to this utility model;

[0024] Figure 3 This is a cross-sectional view of the first telescopic rod and the second telescopic rod of this utility model.

[0025] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0027] Figure 6 This is a schematic diagram showing the installation relationship between the first telescopic rod and the clamping assembly of this utility model;

[0028] Figure 7 This is a schematic diagram showing the state of this utility model in specific use;

[0029] Figure 8 This is a schematic diagram showing another perspective of the present invention during specific use;

[0030] Figure 9 This is a top view of the present invention in actual use.

[0031] In the diagram, 1 is the first arc-shaped rod; 11 is the first end; 12 is the second end; 13 is the positioning ball; 2 is the second arc-shaped rod; 21 is the third end; 22 is the fourth end; 23 is the guide tube; 24 is the clamping tube; and 25 is the abutment component.

[0032] 3. Guide cylinder; 4. Telescopic assembly; 41. First telescopic rod; 411. Slide cavity; 412. Elastic conical sleeve; 4121. Contraction groove; 413. Threaded part; 414. Guide rod; 42. Second telescopic rod; 421. Guide hole;

[0033] 5. Clamping assembly; 51. Extrusion cylinder; 52. Internal threaded component. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as an obstruction of this utility model. It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0036] like Figures 1-9 As shown in the embodiment of this application, an auxiliary device for inferior alveolar nerve block anesthesia injection is proposed, including a first arc-shaped rod 1, which has a first end 11 and a second end 12. The first end 11 is provided with a positioning ball 13, which is used to press against the protruding part of the mandibular condyle, which corresponds to the needle insertion point for inferior alveolar nerve block anesthesia. The second arc-shaped rod 2 has a third end 21 and a fourth end 22. The third end 21 is provided with a guide cylinder 3, and the center of the positioning ball 13 is located on the axial extension line of the guide cylinder 3. A telescopic component 4 is provided between the second end 12 and the fourth end 22, and both the second end 12 and the fourth end 22 are connected to the telescopic component 4.

[0037] In this embodiment, the patient is first instructed to open their mouth wide, exposing the mandibular condyle near the anterior tragus notch (the mandibular condyle protrudes outward when the patient opens their mouth wide). Then, the positioning ball 13 is pressed against the protruding mandibular condyle. Subsequently, the telescopic component 4 is adjusted according to the size of the patient's face, thereby adjusting the distance between the first arc-shaped rod 1 and the second arc-shaped rod 2, so that the guide cylinder 3 can be placed at the patient's mouth position. Figure 6, Figure 7 As shown; at this time, the medical staff needs to hold the inferior alveolar nerve block anesthesia injection auxiliary device with their left hand, and then insert the syringe used for anesthesia into the guide tube 3 with their right hand. The medical staff holds the inferior alveolar nerve block anesthesia injection auxiliary device with their left hand and makes fine adjustments to adjust the guide tube 3 to a suitable position. Since the center of the positioning ball 13 and the extension line of the axis of the guide tube 3 are collinear, and the position of the positioning ball 13 corresponds to the injection site of the inferior alveolar intraoral anesthesia, the position corresponding to the direction pointed by the guide tube 3 is the position of the inferior alveolar intraoral anesthesia injection point; this allows the medical staff to quickly and accurately locate the anesthesia injection point (e.g., Figure 8 , Figure 9 As shown in the diagram, the medical staff then operates the syringe and, guided by the guide tube 3, can quickly complete the inferior alveolar nerve block anesthesia process. The inferior alveolar nerve block anesthesia injection auxiliary device in this protocol improves the success rate of inferior alveolar anesthesia operations, effectively avoiding incorrect positioning or repeated punctures that could lead to local tissue hematoma (causing unnecessary pain to the patient); it also reduces the skill requirements for medical staff to some extent (lowering the technical threshold).

[0038] In some embodiments of this application, such as Figure 1 , Figure 2 As shown, the telescopic assembly 4 includes a first telescopic rod 41 and a second telescopic rod 42; the end of the first telescopic rod 41 facing away from the second telescopic rod 42 is fixedly connected to the second end 12, and the end of the second telescopic rod 42 facing away from the first telescopic rod 41 is fixedly connected to the fourth end 22; as shown Figure 3 As shown, the first telescopic rod 41 has a sliding cavity 411, and the second telescopic rod 42 is axially slidably installed in the sliding cavity 411. The first telescopic rod 41 is provided with a clamping assembly 5, which is used to clamp and position the second telescopic rod 42.

[0039] When it is necessary to adjust the distance between the first arc-shaped rod 1 and the second arc-shaped rod 2, the clamping assembly 5 releases the clamping and positioning of the second telescopic rod 42, and then the first telescopic rod 41 and the second telescopic rod 42 move relative to each other to adjust the distance between the first arc-shaped rod 1 and the second arc-shaped rod 2. When the distance is adjusted to a suitable position, the clamping assembly 5 clamps and positions the second telescopic rod 42 again, so that the first arc-shaped rod 1 and the second arc-shaped rod 2 remain in their current positions.

[0040] In some embodiments of this application, such as Figure 2 , Figure 3 , Figure 4As shown, the clamping assembly 5 includes a compression cylinder 51 coaxially sleeved around the outer periphery of the first telescopic rod 41. The compression cylinder 51 can move axially along the first telescopic rod 41 (the inner wall of the compression cylinder 51 can be spaced apart from the outer wall of the first telescopic rod 41 or fitted together). An elastic conical sleeve 412 is coaxially connected to the end of the first telescopic rod 41 away from the first arc-shaped rod 1. The elastic conical sleeve 412 has a small-diameter end near the first telescopic rod 41 and a large-diameter end away from the first telescopic rod 41. When it is necessary to position the second telescopic rod 42, the compression cylinder 51 is driven to move toward the elastic conical sleeve 412, so that the end of the compression cylinder 51 is sleeved toward the elastic conical sleeve 412. On the outside of the elastic conical sleeve 412 (so that the extrusion cylinder 51 moves towards the elastic conical sleeve 412 from the small diameter end to the large diameter end), the elastic conical sleeve 412 is radially extruded, causing the elastic conical sleeve 412 to contract radially. As the elastic conical sleeve 412 contracts radially, the inner wall of the elastic conical sleeve 412 presses against the outer peripheral wall of the second telescopic rod 42, thereby achieving the clamping and positioning effect of the second telescopic rod 42. The greater the distance that the extrusion cylinder 51 moves towards the second telescopic rod 42, the greater the deformation amplitude of the elastic conical sleeve 412 under extrusion, and the better the clamping and positioning effect of the second telescopic rod 42. When it is necessary to release the positioning of the second telescopic rod 42, the extrusion cylinder 51 is moved in the opposite direction, moving away from the second telescopic rod 42. This causes the extrusion cylinder 51 to move synchronously, moving from the large-diameter end to the small-diameter end of the elastic conical sleeve 412, until it completely disengages from the elastic conical sleeve 412. At this time, relative movement can occur between the first telescopic rod 41 and the second telescopic rod 42, which is used to adjust the distance between the first arc-shaped rod 1 and the second arc-shaped rod 2.

[0041] In some embodiments of this application, such as Figure 2 As shown, an internally threaded component 52 is coaxially connected to the end of the extrusion cylinder 51 opposite to the second telescopic rod 42. A threaded portion 413 that mates with the internally threaded component 52 is provided on the outer peripheral wall of a portion of the first telescopic rod 41. Rotating the internally threaded component 52 drives the extrusion cylinder 51 to move axially along the first telescopic rod 41. When the internally threaded component 52 stops moving, it can also position the extrusion cylinder 51, so that the extrusion cylinder 51 is stably maintained in the current position.

[0042] In some embodiments of this application, such as Figure 6 As shown, the elastic conical sleeve 412 has multiple contraction grooves 4121 arranged axially around the first telescopic rod 41 on its periphery. The contraction grooves 4121 are radially penetrating the elastic conical sleeve 412. The contraction grooves 4121 are provided so that when the extrusion cylinder 51 is sleeved on the outside of the elastic conical sleeve 412 and radially extrudes the elastic conical sleeve 412, the elastic conical sleeve 412 can deform better in the direction of extruding the first telescopic rod 41, thereby improving the clamping and positioning effect on the second telescopic rod 42.

[0043] In some embodiments of this application, the elastic conical sleeve 412 in this solution is an elastic rubber component with certain elastic deformation characteristics.

[0044] In some embodiments of this application, such as Figure 3 As shown, a guide rod 414 extending axially along the first telescopic rod 41 is provided in the sliding cavity 411, and a guide hole 421 cooperating with the guide rod 414 is provided in the second telescopic rod 42. The guide rod 414 and the guide hole 421 are used to restrict circumferential rotation between the first telescopic rod 41 and the second telescopic rod 42. The cross-sectional shape of the guide rod 414 can be set to any desired shape (the shape of the guide hole 421 needs to match the guide rod 414), as long as it can suppress circumferential rotation between the first telescopic rod 41 and the second telescopic rod 42.

[0045] In some embodiments of this application, the guide tube 3 in this solution is a disposable item. Since the guide tube 3 is located at the patient's mouth during the injection of inferior alveolar anesthesia, and some of it may even enter the patient's oral cavity, in order to ensure hygiene, the guide tube 3 and the third end 21 are detachably connected in this solution. After the inferior alveolar anesthesia is completed, the guide tube 3 can be removed from the third end 21 and discarded.

[0046] In some embodiments of this application, such as Figure 1 , Figure 3 , Figure 5 As shown, a clamping cylinder 24 matching the guide cylinder 3 is provided at the third end 21 (the inner diameter of the clamping cylinder 24 matches the outer diameter of the guide cylinder 3). In use, the guide cylinder 3 is coaxially inserted into the clamping cylinder 24 (both ends of the guide cylinder 3 extend out of the clamping cylinder 24). The cylinder wall of the clamping cylinder 24 is fitted with abutment 25 (a locking bolt) along the radial thread. When the guide cylinder 3 is inserted into the clamping cylinder 24, the abutment 25 is screwed on and pressed against the outer wall of the guide cylinder 3, thereby achieving the positioning effect of the guide cylinder 3. After the anesthesia operation is completed, the abutment 25 is screwed on in the opposite direction so that the abutment 25 no longer presses against the outer wall of the guide cylinder 3. At this time, the guide cylinder 3 can be removed from the clamping cylinder 24.

[0047] In some embodiments of this application, the guide cylinder 3 in this solution is an ABS resin structural component (ABS resin is an abbreviation for acrylonitrile-butadiene-styrene copolymer), which is a thermoplastic polymer material with high strength, good toughness and easy processing and molding.

[0048] The working process of this utility model is as follows: When it is necessary to perform inferior alveolar nerve block anesthesia on a patient, the patient is first instructed to open their mouth wide (exposing the mandibular condyle near the anterior tragus notch), and the positioning ball 13 is pressed against the protruding part of the patient's mandibular condyle. Then, according to the size of the patient's face, the second telescopic rod 42 is moved relative to the first telescopic rod 41 to adjust the distance between the first arc-shaped rod 1 and the second arc-shaped rod 2, so that the guide tube 3 can be positioned at the patient's mouth (after adjustment, the second telescopic rod 42 is clamped and positioned by the clamping component 5). During this process, the medical staff needs to hold the inferior alveolar nerve block anesthesia injection auxiliary device with one hand and hold the syringe with the other hand and insert the syringe into the guide tube 3. At this time, the direction of the guide tube 3 is the approximate needle insertion point for inferior alveolar anesthesia. The medical staff operates the syringe to complete the anesthesia injection process.

[0049] In summary, this utility model provides an auxiliary device for inferior alveolar nerve block anesthesia injection. This solution, by setting a positioning ball 13 and a guide tube 3 whose axial extension passes through the center of the positioning ball 13, helps medical personnel to locate the injection point for inferior alveolar anesthesia in a timely and accurate manner. Specifically, during inferior alveolar anesthesia, the patient opens their mouth wide to expose the mandibular condyle near the anterior tragus notch (i.e., the injection point for inferior alveolar anesthesia), and the positioning ball 13 is pressed against the protruding part of the mandibular condyle. The medical personnel hold the auxiliary device in one hand and insert the syringe into the guide tube 3 with the other. Because the axial extension of the guide tube 3 passes through the center of the positioning ball 13, the syringe, guided by the guide tube 3, allows the medical personnel to quickly locate and position the injection point in the oral cavity. This reduces the difficulty of anesthesia operation, lowers the skill requirements for medical personnel, increases the probability of successful anesthesia on the first attempt, and avoids unnecessary suffering for patients due to multiple anesthesia failures.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An auxiliary device for inferior alveolar nerve block anesthesia injection, characterized in that, include: The first arc-shaped rod (1) has a first end (11) and a second end (12), and the first end (11) is provided with a positioning ball (13); The second arc-shaped rod (2) has a third end (21) and a fourth end (22). The third end (21) is provided with a guide cylinder (3), and the center of the positioning ball (13) is located on the extension line of the axial direction of the guide cylinder (3). The telescopic component (4) is located between the second end (12) and the fourth end (22), and both the second end (12) and the fourth end (22) are connected to the telescopic component (4).

2. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 1, characterized in that, The telescopic assembly (4) includes a first telescopic rod (41) and a second telescopic rod (42); the first telescopic rod (41) is connected to the second end (12) at one end away from the second telescopic rod (42), and the second telescopic rod (42) is connected to the fourth end (22) at one end away from the first telescopic rod (41); The first telescopic rod (41) has a sliding cavity (411), and the second telescopic rod (42) is axially slidably installed in the sliding cavity (411). The first telescopic rod (41) is provided with a clamping assembly (5), which is used to clamp and position the second telescopic rod (42).

3. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 2, characterized in that, The clamping assembly (5) includes a compression cylinder (51) coaxially sleeved on the outer periphery of the first telescopic rod (41), and the compression cylinder (51) can move axially along the first telescopic rod (41). The first telescopic rod (41) is coaxially connected to an elastic conical sleeve (412) at the end opposite to the first arc-shaped rod (1). The elastic conical sleeve (412) has a small diameter end close to the first telescopic rod (41) and a large diameter end away from the first telescopic rod (41). The extrusion cylinder (51) moves toward the elastic conical sleeve (412), so that one end of the extrusion cylinder (51) is sleeved on the outside of the elastic conical sleeve (412), and radially extrudes the elastic conical sleeve (412), causing the elastic conical sleeve (412) to contract radially.

4. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 3, characterized in that, The extrusion cylinder (51) is coaxially connected to an internal threaded component (52) at one end away from the second telescopic rod (42). A portion of the outer peripheral wall of the first telescopic rod (41) is provided with a threaded portion (413) that mates with the internal threaded component (52). Rotating the internal threaded component (52) drives the extrusion cylinder (51) to move axially along the first telescopic rod (41).

5. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 3, characterized in that, The elastic conical sleeve (412) has a plurality of contraction grooves (4121) arranged axially around the first telescopic rod (41) on its periphery, and the contraction grooves (4121) are arranged radially through the elastic conical sleeve (412).

6. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 3, characterized in that, The elastic conical sleeve (412) is an elastic rubber component.

7. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 2, characterized in that, The sliding cavity (411) is provided with a guide rod (414) extending axially along the first telescopic rod (41), and the second telescopic rod (42) is provided with a guide hole (421) that cooperates with the guide rod (414). The guide rod (414) and the guide hole (421) are used to restrict the circumferential rotation between the first telescopic rod (41) and the second telescopic rod (42).

8. The inferior alveolar nerve block anesthesia injection auxiliary device according to any one of claims 1-7, characterized in that, The guide cylinder (3) is detachably connected to the third end (21).

9. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 8, characterized in that, The third end (21) is provided with a clamping cylinder (24) that matches the guide cylinder (3). The guide cylinder (3) is coaxially inserted into the clamping cylinder (24). The wall of the clamping cylinder (24) is fitted with an abutment (25) along the radial thread. The abutment (25) presses against the outer wall of the guide cylinder (3).

10. The inferior alveolar nerve block anesthesia injection auxiliary device according to claim 1, characterized in that, The guide cylinder (3) is an ABS resin structural component.

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