Injector for oral anesthesia

Abstract

The utility model discloses an oral cavity anesthesia syringe, which comprises a needle cylinder, a syringe needle, a syringe needle sleeve, a syringe needle sleeve and a syringe needle sleeve, one end of the syringe is provided with an injection needle; the push rod is slidably connected with the needle cylinder, and a push-pull ring is arranged at the tail end of the push rod; the needle cover devices are arranged on the two sides of the needle cylinder; when the needle cover is located at the first position, the through groove is covered or partially covered by the needle cover; the needle cover device comprises sliding grooves formed in the two sides of the needle cylinder. The sliding block is connected into the sliding groove in a sliding manner; the needle cover is jointly connected with the two sliding blocks; wherein the needle cover has a first position and a second position when moving to enable the sliding block to be arranged on the two sides of the sliding groove, the first position is an injection position, and the second position is a covering position. The oral cavity anesthesia injector has the advantages that the position of the needle does not need to be calibrated, potential safety hazards are reduced, and the injector has high safety in the using process.

Description

Technical Field

[0001] The utility model relates to the field of oral injection anesthesia, in particular to an oral anesthesia syringe. Background Art

[0002] As an indispensable basic medical device in the field of oral medicine, oral anesthesia syringes play a key role in the dental treatment process. With the continuous advancement of oral medical technology, modern oral anesthesia syringes have been significantly improved in terms of safety, accuracy and ease of use. At present, oral anesthesia syringes on the market mainly include two categories: self-priming syringes and cartridge syringes. Among them, cartridge syringes have become the mainstream choice for clinical use due to their advantages such as simple operation and accurate dosage.

[0003] In daily diagnosis and treatment, the process of using an oral anesthesia syringe is usually as follows: the doctor first installs the anesthetic bottle into the syringe and then performs the first injection. Since oral treatment often requires anesthesia of multiple parts, or additional anesthetic doses are required during treatment, the same syringe and bottle are usually used multiple times during a single treatment. In between uses, a needle cover is usually required to reduce external contamination of the needle. Clinically, there are also cases where the needle cover is not added, but this situation may cause safety hazards of needle pricks to medical staff and patients.

[0004] However, existing oral anesthesia syringes have obvious technical defects in the use of needle covers. The primary problem is that the re-covering process of the needle cover requires precise alignment. When the doctor re-covers the needle, he must accurately align the tiny needle with the opening of the needle cover. This process is not only time-consuming, but also prone to multiple attempts to succeed due to visual angle problems. Especially in a tense diagnosis and treatment environment, this alignment operation is even more cumbersome and time-consuming.

[0005] What is more serious is that there are great safety hazards when performing the needle cover operation. When medical staff are not focused enough or operate improperly, it is easy for the needle to accidentally prick their fingers. This occupational injury not only causes physical damage, but also may bring the risk of blood-borne diseases. According to relevant statistics, accidental punctures by medical staff during the needle cover operation account for a considerable proportion of all needlestick accidents.

[0006] In addition, traditional needle cover devices usually adopt a simple cylindrical design and lack an effective protection mechanism. Under the fast working rhythm, medical staff may use irregular methods to cover the needle when putting the needle cover back, which further increases the risk of needlestick injuries. At the same time, since the needle cover and the needle are fixed only by simple friction, the needle cover may become loose or fall off during use, posing a potential threat to medical safety. Utility Model Content

[0007] The utility model aims to provide an oral anesthesia syringe which does not require the needle position to be calibrated, has high safety during use, and reduces potential safety hazards.

[0008] The above technical objectives of the utility model are achieved through the following technical solutions:

[0009] An oral anesthesia syringe comprises: a syringe, which is hollow in the middle and has a through groove on one side; an injection needle is installed at one end of the syringe; a push rod, which is slidably connected to the syringe and has a push-pull ring at the end of the push rod; a needle cover device, which is arranged on both sides of the syringe; the needle cover device comprises: a slide groove, which is arranged on both sides of the syringe; a slider, which is slidably connected in the slide groove; a needle cover, which is connected to two sliders; the needle cover moves so that the slider has a first position and a second position when it is placed on both sides of the slide groove, the first position is the injection position, and the second position is the covering position, and when the needle cover is in the first position, the through groove is covered or partially covered by the needle cover.

[0010] The utility model is further configured as follows: the two ends of the slide groove are connected to each other with positioning grooves, and the positioning grooves are connected to the slide block by interference fit.

[0011] The utility model is further configured as follows: the width of the positioning groove is smaller than the width of the sliding groove, and the width of the sliding groove is equal to the diameter of the sliding block.

[0012] The utility model is further configured as follows: a cover body is arranged at one end of the needle cover.

[0013] The utility model is further configured that: the length of the needle cover is greater than the length of the injection needle.

[0014] The utility model is further configured such that the length of the needle cover is greater than the length of the through slot.

[0015] In summary, the utility model has the following beneficial effects:

[0016] (1) The needle cover of the present application can slide in the slide slot, greatly simplifying the needle cover covering process. Medical personnel only need to push the slider to drive the needle cover to move to the covering position, without having to accurately align the tiny needle with the needle cover opening as in the traditional solution, thus avoiding tedious alignment operations and saving a lot of operation time.

[0017] (2) This application adopts a sliding design to cover the needle, which fundamentally avoids the defect that the traditional needle cover device needs to directly contact the needle area. The needle cover can be covered by sliding the slider in the slide slot, and the medical staff's hands are always away from the dangerous area of ​​the needle, which minimizes the risk of being accidentally stabbed by the needle.

[0018] (3) The needle cover device of the present application has a simple and reliable structure. The positioning grooves at both ends of the slide groove are interference-fitted with the slider, which can reliably fix the position of the needle cover and prevent the needle cover from accidentally moving. The design that the positioning groove width is smaller than the slide groove width allows the slider to form obvious operational feedback between movement and positioning, making it easier for medical personnel to judge whether the needle cover is in place.

[0019] (4) The present application sets a needle cover device on both sides of the syringe. When the needle cover is in the injection position, it can cover the through groove, effectively preventing the anesthetic bottle from accidentally falling off during use. The design of the needle cover length being longer than the injection needle ensures that the injection needle can be completely covered to avoid external contamination, further improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of the embodiment after the cover body is removed;

[0022] Figure 3 for Figure 2 perspective drawing;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure after removing the needle cover;

[0024] Figure 5 It is a state diagram when the embodiment is in the first position.

[0025] Figure numerals: 1. syringe; 2. through groove; 3. push rod; 4. push-pull ring; 5. needle cover device; 6. slide groove; 7. slide block; 8. needle cover; 9. first position; 10. injection needle; 11. second position; 12. positioning groove; 13. cover body. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] In the description of the present utility model, "multiple" means two or more than two, unless otherwise clearly specified and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, an oral anesthesia syringe includes a syringe 1. The middle of the syringe 1 is hollow, and one side is provided with a through groove 2 for the anesthetic bottle to enter. One end of the syringe 1 is slidably connected with a push rod 3. The push rod 3 can achieve reciprocating sliding in the syringe 1. A push-pull ring 4 is provided at the end of the push rod 3. The push-pull ring 4 can facilitate medical personnel to control the movement of the push rod 3 to inject anesthetics.

[0031] The core technical solution of this application is as follows:

[0032] like Figure 2 , Figure 3 , Figure 4 As shown, in order to solve the safety problem that may be caused by reinstalling the needle cover 8, the present application provides a needle cover device 5 on both sides of the syringe 1 for sliding movement.

[0033] The needle cover device 5 comprises a slide groove 6 arranged on both sides of the syringe 1. A circular slider 7 is slidably connected in the slide groove 6. The two sliders 7 are commonly connected to a needle cover 8. The needle cover 8 cooperates with the slider 7 and can move in the slide groove 6, thereby changing the position of the needle cover 8.

[0034] The needle cover 8 has two positions, one of which is set as the injection position, namely the first position 9. In this position, the needle cover 8 is in a position such as Figure 5 The right side of the slide 6 is shown. At this time, an injection needle 10 can be installed at one end of the syringe 1 and used to inject anesthetics. The injection needle 10 is double-ended, one end enters the anesthetic bottle to absorb anesthetics, and the other end is used for injection. The other position is set as the covering position, that is, the second position 11, and the needle cover 8 is in the position as shown. Figure 2The left side of the slide slot 6 is shown. In this position, the needle cover 8 covers the injection needle 10, so that the injection needle 10 is inside the needle cover 8, preventing the medical staff from being pricked by the injection needle 10.

[0035] Optimally, the length of the needle cover 8 and the length of the slide groove 6 described in the present application are greater than the length of the injection needle 10, and can fully cover the injection needle 10. The length of the needle cover 8 can be increased to be greater than the length of the through groove 2 or more than half of the through groove 2, which can prevent the anesthetic bottle from falling out of the syringe 1 due to misoperation.

[0036] Furthermore, positioning grooves 12 are provided at both ends of the slide groove 6. The positioning groove 12 is connected to the slider 7 by interference fit. The width of the positioning groove 12 is smaller than the width of the slide groove 6, and the width of the slide groove 6 is equal to the diameter of the slider 7. Under the above arrangement, the slider 7 can drive the needle cover 8 to slide smoothly in the slide groove 6, and engage in the positioning groove 12 to fix the position of the slider 7, thereby fixing the orientation of the needle cover 8. The slider 7 described in the present application can be made of rubber material.

[0037] Optimally, a cover 13 is provided at one end of the needle cover 8. This cover 13 is the cover 13 used when the injection needle 10 is packaged. After the injection needle 10 is taken out, the corresponding cover 13 is installed on the needle cover 8 and reused during this treatment.

[0038] Under the above settings, the overall process is as follows:

[0039] 1. Move the slider 7 to the second position 11, so that the through slot 2 in the middle of the syringe 1 is exposed, and install the special anesthetic bottle into the syringe 1 through the through slot 2;

[0040] 2. Move the slider 7 to the first position 9 so that the through slot 2 in the middle of the syringe 1 is covered or partially covered by the needle cover 8 to prevent the anesthetic bottle from falling out of the syringe 1 due to misoperation. Thread the injection needle 10 onto one end of the syringe 1.

[0041] 3. Medical staff perform the first anesthesia on the patient;

[0042] 4. After the initial anesthesia treatment is completed, the slider 7 is rotated to leave the positioning groove 12 and moved to the second position 11 to cover the injection needle 10 and cover the cover body 13 to prepare for the subsequent anesthesia injection treatment.

[0043] Under the above configuration, the present application provides a slidable, integrally connected needle cover 8 on the syringe 1. During injection, the needle cover 8 moves to expose the injection needle 10. After the injection is completed, the needle cover 8 moves to cover the injection needle 10. Compared with the technical solution of re-covering the injection needle 10 with the cover body 13 in the prior art, the present application does not need to align the needle tip of the injection needle 10. The needle tip is covered by the sliding of the needle cover 8, which prevents medical personnel from being pricked by the needle tip, thereby ensuring the safety of medical personnel and reducing external contamination caused by the exposure of the injection needle 10.

[0044] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An oral anesthesia syringe, comprising: A syringe (1), wherein the middle of the syringe (1) is hollow and a through groove (2) is provided on one side; An injection needle (10) is mounted on one end of the syringe (1); A push rod (3), the push rod (3) is slidably connected to the syringe (1), and a push-pull ring (4) is provided at the end of the push rod (3); A needle cover device (5), wherein the needle cover device (5) is arranged on both sides of the syringe (1); The needle cover device (5) comprises: A slide groove (6), wherein the slide groove (6) is arranged on both sides of the syringe (1); A slider (7), the slider (7) being slidably connected in the slide groove (6); A needle cover (8), the needle cover (8) being connected to the two slide blocks (7); When the needle cover (8) is moved so that the slider (7) is placed on both sides of the slide groove (6), the needle cover (8) has a first position (9) and a second position (11), wherein the first position (9) is an injection position and the second position (11) is a covering position; When the needle cover (8) is in the first position (9), the through slot (2) is covered or partially covered by the needle cover (8).

2. The oral anesthesia syringe according to claim 1, characterized in that: The two ends of the slide groove (6) are respectively connected with positioning grooves (12), and the positioning grooves (12) are connected to the sliding block (7) by interference fit.

3. The oral anesthesia syringe according to claim 2, characterized in that: The width of the positioning groove (12) is smaller than the width of the sliding groove (6), and the width of the sliding groove (6) is equal to the diameter of the sliding block (7).

4. The oral anesthesia syringe according to claim 1, characterized in that: A cover body (13) is provided at one end of the needle cover (8).

5. The oral anesthesia syringe according to claim 1, characterized in that: The length of the needle cover (8) is greater than the length of the injection needle (10).

6. The oral anesthesia syringe according to claim 1, characterized in that: The length of the needle cover (8) is greater than the length of the through slot (2).

Images