Push-pull pen type tympanic membrane puncture injection pen

Abstract

This application relates to the field of tympanic membrane puncture injection pens, and provides a push-pull pen-type tympanic membrane puncture injection pen, including an injection pen body, a side push groove, a piston part, a push-pull part, and a push rod. The injection pen body has an injection groove arranged along its axial direction, the side push groove is arranged radially along the injection pen body and communicates with the opening of the injection groove, the piston part covers the opening of the injection groove and forms an injection cavity with the injection groove, and the push rod is disposed in the injection groove, with one end of the push rod connected to the piston part and the other end connected to the push-pull part. The push-pull part is driven to move the push rod, thereby causing the piston part to move along the axial direction of the injection pen body and changing the volume of the injection cavity. This utility model, by setting a side push groove, allows the push-pull part to be slidably disposed on the side of the injection pen body. When operating with one hand, the thumb can naturally rest on the push-pull part and control its movement. During treatment, by pushing the push-pull part with the thumb, precise control of the injection volume of the medication and the pressure of the aspirated fluid from the ear can be achieved.

Description

Technical Field

[0001] This application relates to the field of tympanic membrane puncture injection pens, and more particularly to a push-pull pen-type tympanic membrane puncture injection pen. Background Technology

[0002] Tympanic membrane puncture and injection are common techniques in otolaryngology for treating middle and inner ear diseases. During treatment, a channel is created by puncturing the tympanic membrane to aspirate middle ear effusion (such as secretory middle ear disease), and medication can be injected into the tympanic cavity to treat related diseases (such as sudden deafness, Meniere's disease, etc.). Currently, in clinical practice, ordinary injection (1-5ml specification) combined with puncture needles is commonly used.

[0003] During the procedure, the endoscope is typically held in one hand and the syringe in the other. When performing tympanic membrane puncture or injection with one hand, the puncture site, depth, and injection force must be controlled simultaneously. Because the hand is suspended in the air during puncture and injection, the puncture site is easily affected by hand tremors. For patients, especially children, the pain of the puncture can easily cause them to suddenly turn their heads, potentially leading to needle displacement, tympanic membrane perforation, or even damage to the inner ear. Furthermore, aspiration after puncture is difficult with one hand due to the difficulty of using the syringe, often requiring changing the suction device or assistance from an assistant, increasing the inconvenience of the procedure.

[0004] For example, patent CN103768667B discloses a tympanic membrane puncture and aspiration syringe, including a needle, a balloon, a soft rubber pad, and an extension rod. The balloon can be pressed or released with one hand to draw and inject medication. However, its structure is relatively complex and its cost is high. Furthermore, it is not easy to control the injection volume when injecting medication by squeezing the balloon. When aspirating medication or fluid from the ear, it mainly relies on the negative pressure created by the balloon's self-inflation, which has the disadvantage of difficulty in controlling suction compared to a syringe. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a push-pull pen-type tympanic membrane puncture injection pen, which aims to solve the shortcomings of existing single-handed tympanic membrane puncture injection pens that are difficult to control the injection volume and suction.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: A push-pull pen-type tympanic membrane puncture injection pen, comprising: an injection pen body, wherein the injection pen body has an injection groove disposed along its axial direction;

[0007] A side push groove is provided radially along the body of the injection pen and communicates with the opening of the injection groove;

[0008] A piston portion is provided to cover the opening of the injection groove and form an injection cavity with the injection groove;

[0009] A push-pull portion, wherein the push-pull portion is disposed within the side push groove;

[0010] A push rod is disposed in the injection cavity, with one end of the push rod connected to the piston part and the other end connected to the push-pull part. The push-pull part is driven to move the push rod, thereby causing the piston part to move along the axial direction of the injection pen body and changing the volume of the injection cavity.

[0011] Furthermore, the push rod has a sliding hole along its axial direction at the end connected to the push-pull part;

[0012] The push-pull pen-type tympanic membrane puncture injection pen further includes a limiting rod, which is arranged along the axial direction of the injection pen body, with one end of the limiting rod connected to the injection pen body and the other end slidably disposed in the sliding hole.

[0013] Furthermore, one end of the push-pull part is located inside the side push groove and connected to the push rod, while the other end protrudes from the side push groove to form a contact surface.

[0014] Furthermore, the contact surface is provided with a plurality of anti-slip grooves arranged circumferentially along the body of the injection pen.

[0015] Furthermore, the push-pull pen-type tympanic membrane puncture injection pen also includes: a cover plate, the cover plate having a circumference along the opening edge of the side push groove, and the end of the cover plate opposite to the opening edge of the side push groove not protruding from the side push groove.

[0016] Furthermore, the push-pull pen-type tympanic membrane puncture injection pen also includes: an injection needle, which is disposed at one end of the injection pen body;

[0017] A threaded portion is provided on the body of the injection pen, and the injection needle is threadedly connected to the threaded portion.

[0018] Furthermore, the push-pull pen-type tympanic membrane puncture injection pen also includes: an indicator block, which is disposed on the injection needle, and the indicator block and the tip of the injection needle have a preset distance.

[0019] Furthermore, the marking block is rectangular in shape, and one of its surfaces is perpendicular to the injection needle.

[0020] Furthermore, the push-pull pen-type tympanic membrane puncture injection pen also includes a protective cover, which is detachably mounted on the injection pen body. The protective cover has a protective groove for accommodating the injection needle.

[0021] Furthermore, both ends of the injection pen body are provided with locking blocks, and the protective cover is provided with a locking slot at the opening of the protective groove. The protective cover is used to detachably connect with any of the locking slots through the locking blocks.

[0022] Compared with the prior art, this utility model sets a side push groove so that the push-pull part can be slidably set on the side of the injection pen body. When operating with one hand, the thumb can naturally rest on the push-pull part and control its movement. During treatment, the push-pull part can be pushed by the thumb to achieve precise control of the injection volume of the medicine and the pressure of the aspirated fluid in the ear. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the push-pull pen-type tympanic membrane puncture injection pen provided in this embodiment;

[0025] Figure 2 This is an exploded view of the push-pull pen-type tympanic membrane puncture injection pen provided in this embodiment;

[0026] Figure 3 This is a partial cross-sectional view of the push-pull pen-type tympanic membrane puncture injection pen provided in this embodiment.

[0027] In the diagram: 100, Injection pen body; 110, Injection groove; 120, Side push groove; 130, Injection cavity; 140, Threaded part; 150, Cover plate; 160, Locking block; 200, Push rod; 210, Sliding hole; 220, Push-pull part; 221, Contact surface; 222, Anti-slip groove; 230, Piston part; 300, Limiting rod; 400, Injection needle; 500, Marking block; 600, Protective cover; 610, Locking groove. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0032] This utility model provides, for example Figures 1 to 3 The push-pull pen-type tympanic membrane puncture injection pen shown is designed to address the shortcomings of existing single-handed tympanic membrane puncture injection pens, which are difficult to control the injection volume and suction.

[0033] This push-pull pen-type tympanic membrane puncture injection pen mainly includes: the injection pen body 100, the side push groove 120, the piston part 230, the push-pull part 220, and the push rod 200.

[0034] The pen body 100 has an injection groove 110 arranged along its axial direction, a side push groove 120 is arranged radially along the pen body 100 and communicates with the opening of the injection groove 110, and a piston portion 230 is arranged to cover the opening of the injection groove 110 and forms an injection cavity 130 with the injection groove 110.

[0035] The push-pull part 220 is disposed in the side push groove 120, and the push rod 200 is disposed in the injection groove 110. One end of the push rod 200 is connected to the piston part 230, and the other end is connected to the push-pull part 220. The push-pull part 220 is driven to move the push rod 200, thereby causing the piston part 230 to move along the axial direction of the injection pen body 100 and changing the volume of the injection cavity 130.

[0036] Specifically, the opening of the injection groove 110 is arranged axially (e.g., Figure 3 (In the upward direction), the piston portion 230 covers the opening of the injection groove 110 and can move axially (e.g., in the upward direction). Figure 3 It moves upwards or downwards. The opening of the side push groove 120 is arranged radially (e.g., upwards or downwards). Figure 3 (From center to right), since the push-pull part 220 is located inside the side push groove 120, medical staff can press the push-pull part 220 by pressing it with their thumb towards the opening of the side push groove 120 during use. At this time, the thumb can naturally move along the axial direction (e.g., from center to right). Figure 3 The push-pull section 220 moves axially (up or down) to drive the push-pull section 220 along the axial direction (e.g., upward or downward). Figure 3 The piston moves (upward or downward) to drive the piston section 230 axially (e.g., upward or downward). Figure 3 The device moves upwards or downwards, thereby changing the volume of the injection chamber 130 to achieve the function of drawing and injecting the drug solution. This invention adopts a structure similar to a pen's push-pull ink cartridge, with the front section capable of storing 1ml-2ml of liquid, enabling side-drawing and injection during operation.

[0037] For example, patent CN103768667B discloses a tympanic membrane puncture and aspiration syringe, including a needle, a balloon, a soft rubber pad, and an extension rod. The balloon can be pressed or released with one hand to draw and inject medication. However, its structure is relatively complex and its cost is high. Furthermore, it is not easy to control the injection volume when injecting medication by squeezing the balloon. When aspirating medication or fluid from the ear, it mainly relies on the negative pressure created by the balloon's self-inflation, which has the disadvantage of difficulty in controlling suction compared to a syringe.

[0038] This invention features a side push groove 120 to slide the push-pull part 220 onto the side of the injection pen body 100. When operating with one hand, the thumb can naturally rest on the push-pull part 220 and control its movement. During treatment, the thumb can push the push-pull part 220 to precisely control the injection volume of the medication and the pressure of the aspirated fluid from the ear.

[0039] In some embodiments, such as Figure 3 As shown, the push rod 200 has a sliding hole 210 along its axial direction at the end connected to the push-pull part 220;

[0040] The push-pull pen-type tympanic membrane puncture injection pen also includes: a limiting rod 300, which is arranged along the axial direction of the injection pen body 100, and one end of the limiting rod 300 is connected to the injection pen body 100, while the other end is slidably arranged in the sliding hole 210.

[0041] Specifically, to save costs, the outer diameter of the push rod 200 can be set to be smaller, and the push rod 200 is fitted with the injection groove 110 with a clearance. This will cause the push rod 200 to be subjected to radial force when the medical staff presses the push-pull part 220 with their thumb (e.g., Figure 3 The piston portion 230 is shifted to the left (from center to left), thus affecting its sealing effect. Therefore, through the above structure, one end of the limiting rod 300 is fixedly connected to the injection pen body 100, making it less susceptible to radial force (e.g., from center to left). Figure 3 The push rod 200 is deflected (to the left) by the limiting rod 300, which can limit the force on the push rod 200 in the radial direction (e.g., from the center to the left). Figure 3 The offset (to the left) ensures a sealing effect and also prevents the push-pull part 220 from being subjected to radial force (such as...). Figure 3 The deviation (from center to left) makes it difficult for medical staff's thumbs to contact the push-pull part 220, affecting its use.

[0042] In some embodiments, such as Figures 1 to 3 As shown, one end of the push-pull part 220 is located in the side push groove 120 and connected to the push rod 200, while the other end protrudes out of the side push groove 120 to form a contact surface 221.

[0043] In practical use, medical staff can press down on the contact surface 221 by pointing their thumb toward the opening of the side push groove 120. At this time, the thumb can naturally move along the axial direction (e.g., Figure 3 The push-pull section 220 moves axially (up or down) to drive the push-pull section 220 along the axial direction (e.g., upward or downward). Figure 3 The piston moves (upward or downward) to drive the piston section 230 axially (e.g., upward or downward). Figure 3 The device moves upward or downward, thereby changing the volume of the injection chamber 130 to achieve the function of drawing and injecting the drug solution.

[0044] In some embodiments, such as Figures 1 to 3 As shown, the contact surface 221 is provided with a plurality of anti-slip grooves 222 arranged circumferentially along the body of the injection pen 100.

[0045] Specifically, by setting anti-slip grooves 222, the friction between the contact surface 221 and the thumb of medical staff can be effectively increased, which is conducive to improving the control of the push-pull part 220 by medical staff.

[0046] In some embodiments, such as Figures 1 to 3As shown, the push-pull pen-type tympanic membrane puncture injection pen also includes: a cover plate 150, which has a circumference along the opening edge of the side push groove 120, and the end of the cover plate 150 facing away from the opening edge of the side push groove 120 does not protrude from the side push groove 120.

[0047] Specifically, the edge of the cover plate 150 opposite to the opening edge of the side push groove 120 forms a rectangular groove, and the push-pull part 220 is slidably disposed on the groove.

[0048] In some embodiments, such as Figures 1 to 3 As shown, the push-pull pen-type tympanic membrane puncture injection pen also includes: an injection needle 400, which is disposed at one end of the injection pen body 100.

[0049] The threaded part 140 is provided on the body 100 of the injection pen, and the injection needle 400 is threadedly connected to the threaded part 140.

[0050] Specifically, the injection needle 400 and the threaded part 140 are connected by threads, which can prevent ejection due to unstable connection during injection, thus avoiding damage to the inner ear and improving safety.

[0051] In some embodiments, such as Figures 1 to 3 As shown, the push-pull pen-type tympanic membrane puncture injection pen also includes: an indicator block 500, which is disposed on the injection needle 400, and the indicator block 500 and the needle tip of the injection needle 400 have a preset distance.

[0052] Specifically, the indicator block 500 can indicate the depth of needle insertion to medical staff, preventing excessive insertion and improving safety.

[0053] In some embodiments, such as Figures 1 to 3 As shown, the marker block 500 is cuboid in shape, and one of its surfaces is perpendicular to the injection needle 400.

[0054] Specifically, the above settings can increase the surface area of ​​the marker block 500 in contact with the patient, making it less likely to directly harm the patient when the needle is inserted too deeply, thus improving safety.

[0055] In some embodiments, such as Figures 1 to 3 As shown, the push-pull pen-type tympanic membrane puncture injection pen also includes: a protective cover 600, which is detachably mounted on the injection pen body 100. The protective cover 600 has a protective groove for accommodating the injection needle 400.

[0056] In practical use, the protective cap 600 can function as a pen cap, protecting the injection needle 400 and extending the length of the injection pen body 100, which is beneficial for medical staff to operate.

[0057] In some embodiments, such as Figures 1 to 3 As shown, both ends of the injection pen body 100 are provided with locking blocks 160, and the protective cover 600 is provided with a locking slot 610 at the opening of the protective groove. The protective cover 600 is used to detachably connect to any locking slot 610 through the locking blocks 160.

[0058] In summary, a push-pull pen-type tympanic membrane puncture injection pen is provided, comprising an injection pen body, a side push groove, a piston part, a push-pull part, and a push rod. The injection pen body has an injection groove arranged along its axial direction. The side push groove is arranged radially along the injection pen body and communicates with the opening of the injection groove. The piston part covers the opening of the injection groove and forms an injection cavity with the injection groove. The push rod is disposed in the injection groove, with one end connected to the piston part and the other end connected to the push-pull part. The push-pull part is driven to move the push rod, thereby causing the piston part to move along the axial direction of the injection pen body and changing the volume of the injection cavity. This utility model, by setting a side push groove, allows the push-pull part to be slidably disposed on the side of the injection pen body. When operating with one hand, the thumb can naturally rest on the push-pull part and control its movement. During treatment, by pushing the push-pull part with the thumb, precise control of the injection volume of the medication and the pressure of the aspirated fluid in the ear can be achieved.

[0059] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A push-pull pen-type tympanic membrane puncture injection pen, characterized in that, include: An injection pen body having an injection groove disposed along its axial direction; A side push groove is provided radially along the body of the injection pen and communicates with the opening of the injection groove; A piston portion is provided to cover the opening of the injection groove and form an injection chamber with the injection groove; A push-pull portion, wherein the push-pull portion is disposed within the side push groove; A push rod is disposed in the injection cavity, with one end of the push rod connected to the piston part and the other end connected to the push-pull part. The push-pull part is driven to move the push rod, thereby causing the piston part to move along the axial direction of the injection pen body and changing the volume of the injection cavity.

2. The push-pull pen-type tympanic membrane puncture injection pen according to claim 1, characterized in that, The push rod has a sliding hole along its axial direction at the end connected to the push-pull part; The push-pull pen-type tympanic membrane puncture injection pen further includes a limiting rod, which is arranged along the axial direction of the injection pen body, with one end of the limiting rod connected to the injection pen body and the other end slidably disposed in the sliding hole.

3. The push-pull pen-type tympanic membrane puncture injection pen according to claim 1, characterized in that, One end of the push-pull part is located in the side push groove and connected to the push rod, while the other end protrudes from the side push groove to form a contact surface.

4. The push-pull pen-type tympanic membrane puncture injection pen according to claim 3, characterized in that, The contact surface is provided with a plurality of anti-slip grooves arranged circumferentially along the body of the injection pen.

5. The push-pull pen-type tympanic membrane puncture injection pen according to claim 1, characterized in that, The push-pull pen-type tympanic membrane puncture injection pen further includes: a cover plate, the cover plate having a circumference along the opening edge of the side push groove, and the end of the cover plate opposite to the opening edge of the side push groove not protruding from the side push groove.

6. The push-pull pen-type tympanic membrane puncture injection pen according to claim 1, characterized in that, The push-pull pen-type tympanic membrane puncture injection pen also includes: an injection needle, which is disposed at one end of the injection pen body; A threaded portion is provided on the body of the injection pen, and the injection needle is threadedly connected to the threaded portion.

7. The push-pull pen-type tympanic membrane puncture injection pen according to claim 6, characterized in that, The push-pull pen-type tympanic membrane puncture injection pen further includes: an indicator block, which is disposed on the injection needle, and the indicator block and the tip of the injection needle have a preset distance.

8. The push-pull pen-type tympanic membrane puncture injection pen according to claim 7, characterized in that, The marking block is rectangular in shape, and one of its surfaces is perpendicular to the injection needle.

9. The push-pull pen-type tympanic membrane puncture injection pen according to claim 6, characterized in that, The push-pull pen-type tympanic membrane puncture injection pen also includes a protective cover, which is detachably mounted on the injection pen body. The protective cover has a protective groove for accommodating the injection needle.

10. The push-pull pen-type tympanic membrane puncture injection pen according to claim 9, characterized in that, Both ends of the injection pen body are provided with locking blocks, and the protective cover is provided with a locking slot at the opening of the protective groove. The protective cover is used to detachably connect to any of the locking slots through the locking blocks.

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