Forceps clip and curved needle for posterior superior alveolar nerve block anesthesia
By designing a forceps and bent needle for nerve block anesthesia after the upper alveolar, the bend needle is used to achieve the bend of the injection needle, and the depth of the injection needle is controlled through the syringe and injection scale, the current solution is to use the elbow, bend groove and worm gear structure to achieve the bend needle bending, and the injection depth is controlled through the syringe and injection scale. There are problems of injection needle deviation and depth uncertainty in the art, which improves the local anesthesia effect and the safety of operation.
Patent Information
- Application Number
- CN202420483368.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing post-upper alveolar anesthesia technique for the straight needle cannot slide along the arc surface of the maxillary nodule, which can easily cause the needle to deviate from the bone surface and stab the wing to cause hematoma, and the depth of the needle is uncertain, resulting in poor local anesthesia effect.
A clamp and bent needle for nerve block anesthesia after the upper alveolar is designed. The bend of the injection needle through the elbow, bent groove and worm gear structure is used to ensure that the needle is along the maxillary node. The curved surface slides to avoid deviation and intuitively control the needle depth through the bending scale.
It improves the practicality of the equipment, avoids the occurrence of hematoma, ensures the accuracy of local anesthesia effect and the reasonable injection of the agent, and enhances the comfort and safety of the operation.
Smart Images
Figure CN222286116U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a forceps clamp and a curved needle used for superior alveolar posterior nerve block anesthesia. Background Art
[0002] At present, posterior alveolar nerve block anesthesia is often used for the extraction of maxillary molars and the corresponding infiltration anesthesia of the buccal alveolar bone and mucosa. In order to ensure the anesthesia effect and the safety of the patient, the doctor will use specific instruments to assist the operation. During the whole process, the doctor needs to ensure the comfort and safety of the patient, and at the same time ensure that the anesthetic can accurately act on the target nerve.
[0003] The existing superior alveolar nerve block anesthesia technology is: the patient takes a sitting position, the maxillary tooth plane is 45° to the ground, the mouth is half open, the maxillary second molar (maxillary 7) is used as the buccal vestibule groove distal to the needle insertion point, the injection needle is 40° to the long axis of maxillary 7, and is inserted posteriorly and superiorly. The needle tip slides along the arcuate surface of the maxillary tuberosity to a depth of about 15-16mm (i.e., the location of the posterior superior alveolar nerve foramen), no blood is aspirated, and 1.5-2ml of anesthetic solution is injected to anesthetize the posterior superior alveolar nerve. However, with this anesthesia technology, the straight needle cannot slide along the arcuate surface of the maxillary tuberosity, and the needle tip is easy to deviate from the bone surface and pierce the wing, thereby causing hematoma. The practicality is poor, and the needle insertion depth cannot be determined, which can easily lead to poor local anesthesia effect. Utility Model Content
[0004] The utility model provides a forceps clamp and a curved needle for superior alveolar posterior nerve block anesthesia, which solves the problems of poor practicability and poor local anesthesia effect in the related technology.
[0005] The technical solution of the utility model is as follows: a clamp and a curved needle for superior alveolar posterior nerve block anesthesia, comprising a left clamp, two elbows and an injection needle body, the left clamp is mounted with a right clamp, the left clamp and the right clamp are both mounted with handles, and the two elbows, the left clamp and the right clamp are jointly provided with a bending device;
[0006] The bending device includes four support plates, which are respectively fixedly connected to the left clamp and the right clamp, and a bending shaft is rotatably installed on every two support plates. The elbow is fixedly sleeved on the outer circumference of the bending shaft, and arc blocks are welded on the two elbows, the right clamp and the left clamp. Bending grooves are provided on the two elbows, the left clamp and the right clamp, wherein a driving shaft and a driven shaft are rotatably installed on the two support plates, a turntable is fixedly sleeved on the outer circumference of the driving shaft, and a linkage block is welded on one side of the driving shaft.
[0007] Preferably, a worm is fixedly sleeved on the outer circumference of the driving shaft and the driven shaft, a worm wheel is fixedly sleeved on the outer circumference of the two curved shafts, and the worm and the worm wheel are meshed.
[0008] Preferably, a linkage groove is provided on the driven shaft, and the linkage block and the linkage groove have the same shape.
[0009] Preferably, an active circular groove is opened on one of the support plates, and the active shaft is rotatably mounted inside the active circular groove, and the active circular groove is used for the rotation of the active shaft.
[0010] Preferably, a driven circular groove is formed on the other supporting plate, and the driven shaft is rotatably mounted inside the driven circular groove, and the driven circular groove is used for the rotation of the driven shaft.
[0011] The curved needle for superior alveolar nerve posterior block anesthesia includes the aforementioned forceps clamp for superior alveolar nerve posterior block anesthesia, and also includes a syringe body, to which an injection head body is fixedly connected, and the injection needle body is installed on the injection head body.
[0012] Preferably, the left clamp and the right clamp are both provided with bending scales, and the syringe body is provided with injection scales.
[0013] The working principle and beneficial effects of the utility model are:
[0014] 1. In the utility model, through the arrangement of the elbow, the bending groove and other structures, the worm drives the worm wheel to rotate, thereby realizing the rotation of the bending shaft, realizing the rotation of the elbow, placing the injection needle body inside the bending groove, realizing the bending of the injection needle body, and the curved injection needle body is more easily adapted to the arc surface of the maxillary tuberosity, avoiding deviation from the bone surface to pierce the wing and causing hematoma, making the device more practical.
[0015] 2. In the utility model, by setting the syringe body, bending scale and other structures, the bending scale allows the staff to more intuitively observe the bending length of the injection needle body, and then through the bending length, the insertion depth of the injection needle body driven by the syringe body can be effectively known, thereby achieving a better local anesthesia effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 It is a structural schematic diagram of the elbow of the utility model;
[0019] Figure 3It is a structural schematic diagram of the worm gear of the utility model;
[0020] Figure 4 It is a schematic diagram of the internal structure of the driving shaft and the driven shaft of the utility model;
[0021] Figure 5 It is a structural schematic diagram of the syringe body of the utility model.
[0022] In the figure: 1. left clamp; 2. handle; 3. elbow;
[0023] 4. Bending device; 40. Support plate; 41. Bending shaft; 42. Arc block; 43. Driving shaft; 44. Bending groove; 45. Worm; 46. Worm wheel; 47. Turntable; 48. Driven shaft; 49. Linkage groove; 400. Linkage block;
[0024] 5. Bending scale; 6. Syringe body; 7. Injection scale; 8. Injection head body; 9. Injection needle body; 10. Right clamp. DETAILED DESCRIPTION
[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Example 1
[0027] like Figure 1-Figure 5As shown, the present embodiment proposes a forceps clamp for superior alveolar posterior nerve block anesthesia, comprising a left clamp 1, two elbows 3 and an injection needle body 9, the left clamp 1 is equipped with a right clamp 10, and the left clamp 1 and the right clamp 10 are both equipped with a handle 2, the two elbows 3, the left clamp 1 and the right clamp 10 are jointly provided with a bending device 4, the bending device 4 comprises four support plates 40, the four support plates 40 are respectively fixedly connected to the left clamp 1 and the right clamp 10, a bending shaft 41 is rotatably installed on every two support plates 40, the elbow 3 is fixedly sleeved on the outer circumferential surface of the bending shaft 41, the two elbows 3, the right clamp 10 and the left clamp 1 are welded with arc blocks 42, the two elbows 3. The left clamp 1 and the right clamp 10 are both provided with a bending groove 44, wherein the two support plates 40 are respectively rotatably mounted with a driving shaft 43 and a driven shaft 48, a turntable 47 is fixedly sleeved on the outer circumference of the driving shaft 43, and a linkage block 400 is welded on one side of the driving shaft 43. Through the arrangement of the elbow 3, the bending groove 44 and other structures, the worm 45 drives the worm wheel 46 to rotate, thereby realizing the rotation of the bending shaft 41, realizing the rotation of the elbow 3, placing the injection needle body 9 inside the bending groove 44, realizing the bending of the injection needle body 9, and the bent injection needle body 9 is more easily adapted to the arc surface of the maxillary tuberosity, avoiding deviation from the bone surface to pierce the wing and causing hematoma, making the device more practical.
[0028] like Figure 1-Figure 3 As shown, a worm 45 is fixedly sleeved on the outer circumference of the driving shaft 43 and the driven shaft 48, and a worm wheel 46 is fixedly sleeved on the outer circumference of the two curved shafts 41, and the worm 45 and the worm wheel 46 are meshed.
[0029] like Figure 1-Figure 4 As shown, a linkage groove 49 is provided on the driven shaft 48 , and the linkage block 400 and the linkage groove 49 have the same shape.
[0030] like Figure 1-Figure 2 As shown, a driving circular groove is formed on one of the support plates 40, and a driving shaft 43 is rotatably mounted inside the driving circular groove.
[0031] like Figure 1-Figure 2 As shown, a driven circular groove is formed on the other support plate 40, and a driven shaft 48 is rotatably installed inside the driven circular groove.
[0032] The specific implementation principle of this embodiment is as follows: hold the handle 2 so that the left clamp 1 and the right clamp 10 are closed, and then the linkage block 400 is placed in the linkage groove 49, the turntable 47 rotates to drive the active shaft 43 to rotate, and the active shaft 43 realizes the rotation of the driven shaft 48 through the linkage block 400 and the linkage groove 49. Due to the engagement of the worm 45 and the worm wheel 46, the two bending shafts 41 rotate synchronously and in the same direction, thereby driving the elbow 3 to deviate to the same angle (the elbow 3 is bent at different angles according to the specific situation), and then release the handle 2, place the injection needle body 9 in the bending groove 44, hold the handle 2 again, realize the bending of the injection needle body 9 through the elbow 3, and clamp the needle of the injection needle body 9 into a certain arc, and then perform a better injection, so that the needle tip is closer to the arc surface of the maxillary tuberosity, avoiding the needle tip from being away from the bone surface and piercing the wing to cause hematoma.
[0033] Example 2
[0034] like Figure 1-Figure 5 As shown, this embodiment also introduces a curved needle for superior alveolar nerve posterior block anesthesia, which adds the following structure on the basis of the first embodiment: it also includes a syringe body 6, an injection head body 8 is fixedly connected to the syringe body 6, and an injection needle body 9 is installed on the injection head body 8. Through the arrangement of the syringe body 6, the bending scale 5 and other structures, the bending scale 5 allows the staff to more intuitively observe the bending length of the injection needle body 9, and then through the bending length, the insertion depth of the injection needle body 9 driven by the syringe body 6 can be effectively known, thereby achieving a better local anesthesia effect.
[0035] like Figure 1-Figure 5 As shown, the left clamp 1 and the right clamp 10 are both provided with bending scales 5 , and the syringe body 6 is provided with injection scales 7 .
[0036] The specific implementation principle of this embodiment is as follows: the injection needle body 9 is placed inside the bending groove 44, and the injection needle body 9 is slid forward. Through the bending scale 5, the staff can more intuitively observe the bending length of the injection needle body 9, effectively control the length of the bending part of the injection needle body 9, effectively control the needle insertion length, and ensure the local anesthesia effect;
[0037] Furthermore, the injection scale 7 on the syringe body 6 makes it easier for medical staff to observe the injection of the medicine, thereby avoiding the situation where the dosage of the medicine is too much or too little, thereby making the local anesthesia effect better and more convenient for staff to use.
[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A clamp for posterior superior alveolar nerve block anesthesia, comprising a left clamp (1), two elbows (3) and an injection needle body (9), characterized in that: The left clamp (1) is mounted with a right clamp (10), the left clamp (1) and the right clamp (10) are both mounted with a handle (2), and the two elbows (3), the left clamp (1) and the right clamp (10) are jointly provided with a bending device (4); The bending device (4) comprises four support plates (40), and the four support plates (40) are respectively fixedly connected to the left clamp (1) and the right clamp (10), and a bending shaft (41) is rotatably mounted on each of the two support plates (40). The elbow (3) is fixedly sleeved on the outer peripheral surface of the bending shaft (41), and arc blocks (42) are welded on the two elbows (3), the right clamp (10) and the left clamp (1). Bending grooves (44) are provided on the two elbows (3), the left clamp (1) and the right clamp (10), and a driving shaft (43) and a driven shaft (48) are rotatably mounted on the two support plates (40), and a rotating disk (47) is fixedly sleeved on the outer peripheral surface of the driving shaft (43), and a linkage block (400) is welded on one side of the driving shaft (43).
2. The forceps clamp for posterior superior alveolar nerve block anesthesia according to claim 1, characterized in that: A worm (45) is fixedly sleeved on the outer circumference of the driving shaft (43) and the driven shaft (48), and a worm wheel (46) is fixedly sleeved on the outer circumference of the two bending shafts (41), and the worm (45) and the worm wheel (46) are meshed.
3. The forceps clamp for posterior superior alveolar nerve block anesthesia according to claim 1, characterized in that: The driven shaft (48) is provided with a linkage groove (49), and the linkage block (400) and the linkage groove (49) have the same shape.
4. The forceps clamp for posterior superior alveolar nerve block anesthesia according to claim 1, characterized in that: An active circular groove is formed on one of the support plates (40), and the active shaft (43) is rotatably mounted inside the active circular groove.
5. The forceps clamp for posterior superior alveolar nerve block anesthesia according to claim 1, characterized in that: A driven circular groove is formed on the other support plate (40), and the driven shaft (48) is rotatably mounted inside the driven circular groove.
6. A curved needle for superior alveolar posterior nerve block anesthesia, comprising the forceps clamp for superior alveolar posterior nerve block anesthesia according to any one of claims 1 to 5, characterized in that: It also comprises a syringe body (6), to which an injection head body (8) is fixedly connected, and the injection needle body (9) is mounted on the injection head body (8).
7. The curved needle for superior alveolar posterior nerve block anesthesia according to claim 6, characterized in that: The left clamp (1) and the right clamp (10) are both provided with bending scales (5), and the syringe body (6) is provided with injection scales (7).