Needle head protective cover for oral local anesthesia injection needle

Abstract

The utility model provides an oral cavity local anesthesia injection needle head protective cover, which belongs to the technical field of medical appliances and comprises a needle tube, a groove is arranged on the outer side of the needle tube, a plurality of first springs are arranged in the groove, a telescopic plate is arranged above the plurality of first springs, and a first telescopic rod is arranged in the middle of each first spring. A penetrating hole is formed in the side face of the needle tube above the telescopic plate, a fixing piece is arranged at the penetrating hole, a sliding block is arranged on the side, close to the telescopic plate, of the fixing piece, a cabin is arranged in the connecting piece, a second spring is arranged on the side face of the sliding block in the cabin in the connecting piece, and a hole is formed in the position, at the center of the second spring, of the connecting piece. According to the anesthetic injection needle, a layer of limiting area can be rapidly formed on the periphery of the injection needle after anesthetic injection is completed, medical staff can operate the anesthetic injection needle with one hand through the button, and the problems of medical exposure and the like caused by pricking injury can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical treatment appliance technical field, concretely relates to a mouth cavity local anesthesia injection needle needle head protection cover. BACKGROUND

[0002] With the development of oral medical technology, oral local anesthesia has become one of the common treatment methods, and is widely used in tooth extraction, root canal treatment, oral repair, periodontal surgery and various oral treatments and surgeries. However, during the anesthesia injection process, medical staff faces the risk of needle stick injury. This is due to the particularity of the oral treatment environment, as well as the frequent operation and contact of the anesthesia needle, which makes the needle stick injury a major hidden danger in the occupational exposure of medical staff. It not only may cause direct physical harm, but also may become a transmission route of blood-borne diseases such as hepatitis B and AIDS, seriously threatening the occupational health and safety of medical staff. The Centers for Disease Control and Prevention (CDC) and the Occupational Safety and Health Administration (OSHA) have issued guidelines and standards for preventing needle stick injuries, especially emphasizing that specific equipment or one-handed operation must be used when recapping or withdrawing the needle to reduce the risk of two-handed operation.

[0003] However, the injection needle protection device on the market still has many deficiencies in convenience, one-handed operation and protection efficiency, and it is difficult to meet the needs of safe and efficient operation in oral treatment. Therefore, in view of the safety requirements in the process of oral local anesthesia injection, this research proposes a new type of one-handed operation needle protection cover, which aims to effectively prevent needle stick injury of medical staff, reduce occupational exposure and improve operation safety. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a mouth cavity local anesthesia injection needle needle head protection cover, the utility model can through the cooperation between button and multiple telescopic rods and telescopic plate, slider, connecting rope, can make injection needle after the anesthesia injection fast form a layer of restriction area in the periphery of injection needle, and button can make medical staff one-handed operation, make process convenient and fast, can effectively avoid the medical exposure and other problems caused by needle stick injury.

[0005] The utility model provides a kind of local anesthesia injection needle needle head protective cover for solving above-mentioned technical problem, including needle tube, the cross section of needle tube is circular, specifically the cylindrical structure of upper narrow lower wide, needle tube provides the space of injection for the injection of anesthetic, recess is provided in the outside of needle tube, recess is circular annular groove, multiple first springs are equipped in circular annular groove, first spring is a kind of circular spring, the top of multiple first springs is provided with telescopic plate, telescopic plate is a kind of circular ring plate, telescopic plate is slidably connected with needle tube in circular annular groove of needle tube, the bottom of telescopic plate is fixedly connected with spring, first spring is provided with first telescopic rod in middle, the cross section of first telescopic rod is circular, the upper and lower ends of first telescopic rod are connected with needle tube and telescopic plate respectively, first telescopic rod provides the effect of guiding for first spring, first telescopic rod provides the effect of support for telescopic plate, the top of telescopic plate is provided with perforation in the side of needle tube, the perforation is circular perforation, fixed piece is provided at circular perforation, the cross section of fixed piece is circular, specifically the cylindrical structure, fixed piece is provided with sliding block on the side close to telescopic plate, the cross section of sliding block is rectangular, the bottom of sliding block is in contact with telescopic plate, the inside of connecting piece is equipped with cabin, cabin is circular cabin, the inside cabin of connecting piece is provided with second spring on the side of sliding block, hole is provided on the position of second spring center on connecting piece, the hole is circular hole, push block is provided in connecting piece by circular hole for sliding block, the cross section of push block is circular, push block is specifically a hollow cylindrical structure, push block is fixedly connected with sliding block, push block is provided with second telescopic rod on the side away from sliding block, the cross section of second telescopic rod is circular, second telescopic rod is arranged in the cabin of connecting piece, second telescopic rod is fixedly connected with push block, the part where push block is connected with second telescopic rod is specifically a very thin paperboard, button is provided on the end away from push block of second telescopic rod, button is fixedly connected with second telescopic rod, the side of sliding block is provided with first connecting piece in needle tube, first connecting piece is specifically a circular ring structure, first connecting piece is fixedly connected with sliding block, second connecting piece is provided on needle tube, second fixed connection is a circular ring structure same with first connecting piece, connecting rope is arranged between second connecting piece and first connecting piece, and connecting rope is a kind of connecting rope with elasticity.

[0006] Perforation is provided in the middle of needle tube, and the perforation is a circular perforation, the upper portion of needle tube is provided with injection needle in needle tube, the cross section of injection needle is circular, and the injection needle is fixedly connected with the needle tube at the circular perforation in the needle tube, the lower portion of needle tube is provided with a medicine puncture needle in the needle tube, the cross section of the medicine puncture needle is circular, and the medicine puncture needle is fixedly connected with the needle tube in the circular perforation of the needle tube.

[0007] The outside of injection needle is provided with a first protective cover on the outside of needle tube, and the cross section of the first protective cover is circular, and the first protective cover is specifically a circular ring plate with a certain height.

[0008] The outer side of the anesthetic injection needle is provided with a second protective cover below the needle tube, the second protective cover has a circular ring structure, the outer side of the second protective cover is attached to the outer side of the needle tube, the second protective cover is fixedly connected to the needle tube, the outer side of the second protective cover is provided with a third protective cover below the second protective cover, the third protective cover has a circular ring structure in cross section, and the inner side of the third protective cover is rotationally connected to the outer side of the second protective cover.

[0009] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0010] 1. The injection needle and the anesthetic injection needle are respectively provided with first, second and third protective covers, which ensure the safety and hygiene of the needle in a non-use state and reduce the risk of pollution.

[0011] 2. When not in use, the needle is completely enclosed inside the needle tube, maintaining a sterile state and reducing the risk of infection. Through the slider and second telescopic rod mechanism controlled by the button, the operator can easily control the exposure and hiding of the needle, simplifying the operation process and improving work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the oral local anesthetic injection needle protective cover of the utility model;

[0013] Figure 2 It is a structure schematic view of the utility model sectional view;

[0014] Figure 3 It is a structure schematic view of the utility model local view;

[0015] Figure 4 It is a structure schematic view of the utility model side view.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 100, needle tube; 101, first spring; 102, telescopic plate; 103, first telescopic rod; 104, fixing piece; 105, slider; 106, second spring; 107, push block; 108, second telescopic rod; 109, button; 110, first connecting piece; 111, second connecting piece; 112, connecting rope;

[0018] 200, injection needle; 201, anesthetic injection needle; 202, first protective cover; 203, second protective cover; 204, third protective cover; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model with the specific embodiments of the utility model to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer. Figures 1-4The technical solutions of the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0020] As Figures 1-4The utility model provides an oral local anesthesia injection needle needle head protection cover, including needle tube 100, the cross section of needle tube 100 is circular, specifically the cylindrical structure of the upper narrow lower wide, and needle tube 100 provides the space of injection for the injection of anesthetic, the outside of needle tube 100 is provided with the recess, the recess is circular ring recess, and a plurality of first spring 101 are arranged in the circular ring recess, and the first spring 101 is a circular spring, a plurality of first spring 101 are provided with the expansion plate 102 in the upper, and the expansion plate 102 is circular ring plate, and the expansion plate 102 is slidably connected with needle tube 100 in the circular ring recess of needle tube 100, and the bottom of expansion plate 102 is fixedly connected with spring, and the first expansion rod 103 is arranged in the first spring 101, and the cross section of first expansion rod 103 is circular, and the upper and lower ends of first expansion rod 103 are connected with needle tube 100 and expansion plate 102 respectively, and first expansion rod 103 provides the effect of guiding for first spring 101, and first expansion rod 103 provides the effect of supporting for expansion plate 102, and the upper of expansion plate 102 is provided with the perforation in the side of needle tube 100, and the perforation is circular, and the fixed part 104 is arranged at the circular perforation, and the cross section of fixed part 104 is circular, and specifically it is a cylindrical structure, and the sliding block 105 is arranged on the side of fixed part 104, and the cross section of sliding block 105 is rectangular, and the bottom of sliding block 105 is in contact with expansion plate 102, and the inside of connecting piece is equipped with cabin, and the cabin is circular cabin, and the second spring 106 is arranged in the inside cabin of connecting piece on the side of sliding block 105, and the hole is arranged on connecting piece in the center position of second spring 106, and the hole is circular, and the push block 107 is arranged in connecting piece through the circular hole of sliding block 105, and the cross section of push block 107 is circular, and push block 107 is specifically hollow cylindrical structure, and push block 107 is fixedly connected with sliding block 105, and the second expansion rod 108 is arranged on the side of push block 107 away from sliding block 105, and the cross section of second expansion rod 108 is circular, and the second expansion rod 108 is arranged in the cabin of connecting piece, and the second expansion rod 108 is fixedly connected with push block 107, and the part of push block 107 and second expansion rod 108 is specifically the paperboard of very thin thickness, and the button 109 is arranged on the end of second expansion rod 108 away from push block 107, and the button 109 is fixedly connected with second expansion rod 108, and the first connecting piece 110 is arranged in needle tube 100 on the side of sliding block 105, and the first connecting piece 110 is circular ring structure, and the first connecting piece 110 is fixedly connected with sliding block 105, and the second connecting piece 111 is arranged on needle tube 100, and the second connecting piece is circular ring structure same with first connecting piece 110, and the connecting rope 112 is arranged between second connecting piece 111 and first connecting piece 110, and the connecting rope 112 is the connecting rope 112 with elasticity, and the expansion rod is moved towards the direction of sliding block 105 by pressing second expansion rod 108 through button 109,The second telescopic rod 108 moves the slider 105 to the direction of the second connecting piece 111 during the movement, and after the slider 105 is completely pushed out, the connecting rope 112 leads the slider 105 out of the annular groove on the needle tube 100, and after the slider 105 is led out, the first spring 101 and the first telescopic rod 103 and the telescopic plate 102 are lifted upward due to the elasticity, and during the lifting process, the telescopic plate 102 is limited by the second telescopic rod 108 during the non-return process of the button 109, and after the button 109 returns, the second telescopic rod 108 returns to the cabin of the connecting piece, so that the telescopic plate 102 can continue to be lifted.

[0021] The utility model discloses a button 109 and the cooperation between a plurality of telescopic rods and telescopic plates 102, sliders 105 and connecting ropes 112 can form a restriction area around the injection needle 200 after the injection of anesthetics, and the height of the area is higher than the height of the injection needle 200, and the button 109 can be operated by a single hand, so that the process is convenient and fast, and medical exposure and other problems caused by needle stick injury can be effectively avoided.

[0022] As shown in Figure 2 The upper part of the needle tube 100 is provided with an injection needle 200, the cross section of the injection needle 200 is circular, the injection needle 200 is fixedly connected with the needle tube 100 at the circular perforation in the needle tube 100, and the lower part of the needle tube 100 is provided with an anesthetic puncture needle 201 in the needle tube 100.

[0023] As shown in Figure 2 The outer side of the injection needle 200 is provided with a first protective cover 202 outside the needle tube 100, the cross section of the first protective cover 202 is circular, the first protective cover 202 is a circular ring plate with a certain height, the first protective cover 202 is rotationally connected with the needle tube 100 outside the needle tube 100, the first protective cover 202 is removed before use of the injection needle 200, the first protective cover 202 can prevent needle stick injury before use of the injection needle 200, and can also avoid fungal or bacterial contamination during use of the injection needle 200.

[0024] As shown in Figure 2As shown, the outer side of the drug puncture needle 201 is provided with a second protective cover 203 below the needle tube 100, the second protective cover is a circular ring structure, the outer side of the second protective cover is attached to the outer side of the needle tube 100, the second protective cover is fixedly connected with the needle tube 100, the outer side of the second protective cover 203 is provided with a third protective cover 204 below the second protective cover 203, the third protective cover 204 is a circular ring structure in cross section, the inner side of the third protective cover 204 is rotatably connected with the outer side of the second protective cover 203, the height of the second protective cover 203 exceeds the drug puncture needle 201, the second protective cover 203 can provide external protection when the drug is sucked by the drug puncture needle 201, so as to prevent the medical staff from being pricked by the needle, and the circular ring area formed by the second protective cover 203 can limit the drug during extraction, so that the drug extraction process is more stable, and the third protective cover 204 can protect the drug puncture needle 201 from external interference, and maintain the hygiene of the drug puncture needle 201.

[0025] Working principle: after the drug injection is completed, the medical staff presses the button, so that the sliding block is away from the circular groove position in the needle tube, after the sliding block is away from the position, the first spring and the first telescopic rod jointly drive the telescopic plate in the circular groove to rise, thereby covering the injection needle, and the injection needle is limited to avoid the medical staff being pricked by the needle.

[0026] In addition, it should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, some improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An oral local anesthetic injection needle tip protector, characterized by: The utility model provides a needle tube (100), the recess is equipped with a plurality of first spring (101) in the recess of the outside of needle tube (100), a plurality of first spring (101) are provided with telescopic plate (102) above, first telescopic rod (103) is arranged in the middle of first spring (101), the upper and lower ends of first telescopic rod (103) are connected with needle tube (100) and telescopic plate (102) respectively, the upper side of telescopic plate (102) is equipped with perforation on the side of needle tube (100), fixed part (104) is arranged at the perforation, fixed part (104) is provided with sliding block (105) on the side close to telescopic plate (102), the bottom of sliding block (105) is in contact with telescopic plate (102), the inside of connecting piece is equipped with cabin, the inside cabin of connecting piece is provided with second spring (106) on the side of sliding block (105), the hole is set up in the position of the center of second spring (106) on connecting piece, and the push block (107) is arranged in connecting piece through the hole of sliding block (105), second telescopic rod (108) is arranged on the side away from sliding block (105) of push block (107), button (109) is arranged on the end away from push block (107) of second telescopic rod (108), the side of sliding block (105) is provided with first connecting piece (110) in needle tube (100), second connecting piece (111) is arranged on needle tube (100), and connecting rope (112) is arranged between second connecting piece (111) and first connecting piece (110).

2. An oral local anesthetic injection needle tip shield as defined in claim 1, wherein: The middle of needle tube (100) is provided with perforation, and the upper part of needle tube (100) is provided with injection needle (200) in needle tube (100), and the lower part of needle tube (100) is provided with narcotic drug puncture needle (201) in needle tube (100).

3. An oral local anesthetic injection needle tip shield as defined in claim 2, wherein: The outside of injection needle (200) is provided with first protective cover (202) on the outside of needle tube (100).

4. An oral local anesthetic injection needle tip shield as defined in claim 2, wherein: The outside of narcotic drug puncture needle (201) is provided with second protective cover (203) below needle tube (100), and the outside of second protective cover (203) is provided with third protective cover (204) below second protective cover (203).

Images