Medical disposable syringe
By designing a sliding vibrating part and a mesh piston plate in a medical disposable syringe, the problem of bubbles adhering to the inner wall of the syringe is solved, the effective discharge of bubbles and the readability of the liquid capacity is achieved, and the blindness requirements of clinical trials are met.
Patent Information
- Application Number
- CN202322710041.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-10
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2033-10-10
AI Technical Summary
Existing medical disposable syringes cannot maintain blindness requirements in clinical trials of trial drugs, and the transparent syringe cannot effectively block light, resulting in bubbles attached to the inner wall of the syringe and unable to be discharged, affecting the use and the volume of the drug.
A medical disposable syringe is designed, and a sliding vibration part is used to vibrate the syringe, so that the bubbles attached to the inner wall of the syringe gather and discharge to the piston plate. The piston plate is mesh-shaped and is equipped with a gas separation membrane to ensure the discharge of bubbles. At the same time, the outer wall of the syringe is provided with a light shielding part and a transparent part, which is matched with the wall scale line and the rod scale line to ensure that the liquid volume is readable.
It realizes the effective discharge of bubbles on the inner wall of the syringe while keeping the syringe blind, ensuring the normal use of the syringe and the accurate reading of the liquid capacity.
Smart Images
Figure CN222804570U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment and relates to a disposable medical syringe. Background Art
[0002] The launch of new drugs requires the design of high-quality drug clinical trials, which are often blinded. Single-blind design means that the subjects are not clear whether the drug they are using is a test drug, a control drug, or a placebo; double-blind design means that all parties involved in the clinical trial, such as subjects and researchers, are not clear whether the drug they are using is a test drug, a control drug, or a placebo. In order to avoid the influence of subjective factors such as subjects and / or researchers on subjective evaluation indicators, the test drug should be completely consistent with the control drug and / or placebo in appearance, color, smell, etc. Due to the existence of factors such as production process, the test drugs of some clinical trial projects cannot be completely consistent with the control drug and / or placebo in appearance, color, smell, etc. Especially for drugs in solution or powder injection, it is more difficult to achieve a consistent production process for the two.
[0003] Currently, most of the medical sterile disposable syringes used in the market have transparent syringes. The subjects and researchers can see the medicine in the syringe with the naked eye, which makes it impossible to maintain the blind requirement of clinical trial projects. After the syringe is made of light-shielding material, the original syringe scale cannot be effectively read, and the bubbles in the syringe cannot be observed. The bubbles adhere to the inner wall of the syringe and cannot be discharged, affecting the use of the syringe and the corresponding amount of liquid medicine drawn. Utility Model Content
[0004] The purpose of the utility model is to provide a medical disposable syringe in order to overcome at least one defect of the above-mentioned prior art. The utility model causes the bubbles attached to the inner wall of the syringe to gather and discharge to the piston plate through the sliding vibration part.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] One of the technical solutions of the utility model is to provide a medical disposable syringe, comprising a syringe, a core rod, a piston plate and a needle;
[0007] One end of the syringe is provided with a needle;
[0008] One end of the core rod is provided with a piston plate, which is arranged to slide inside the syringe;
[0009] The core rod is provided with a sliding vibration part, and the core rod and the syringe vibrate the syringe through the sliding vibration part, so that the bubbles attached to the inner wall of the syringe gather at the piston plate, avoiding the light-shielded syringe from being unable to observe whether the bubbles in the syringe are discharged.
[0010] Furthermore, the sliding vibration part includes an eccentric wheel, which is provided with a wheel protrusion. When the core rod is pulled up or pressed down, the eccentric wheel rotates, and the wheel protrusion acts on the syringe, thereby vibrating the syringe and causing the bubbles attached to the inner wall of the syringe to gather towards the piston plate, thereby preventing the light-shielded syringe from being unable to observe whether the bubbles in the syringe are discharged.
[0011] Furthermore, the sliding vibration part includes a pulley, and a sliding groove is opened on the inner wall of the syringe, and a wall protrusion is arranged in the sliding groove. The pulley slides in the sliding groove and collides with the wall protrusion, thereby vibrating the syringe. When the core rod is pulled up or pressed down, the pulley passes through the wall protrusion, thereby vibrating the syringe, causing the bubbles attached to the inner wall of the syringe to gather at the piston plate, thereby preventing the light-shielded syringe from being unable to observe whether the bubbles in the syringe are discharged.
[0012] Furthermore, the piston plate is a mesh structure.
[0013] Furthermore, a gas separation membrane is provided at the other end of the piston plate connected to the core rod, so that the accumulated bubbles can be discharged.
[0014] Furthermore, the piston plate is adapted to the inner diameter of the syringe, and / or
[0015] The gas separation membrane is adapted to the inner diameter of the syringe.
[0016] Furthermore, a shading portion is provided on the outer wall of the syringe, a transparent portion is opened in the shading portion, and a readable wall scale line is provided on the shading portion next to the transparent portion to form a contrast with the shading piston plate, thereby reading the volume of the liquid in the shading syringe.
[0017] Furthermore, the syringe barrel is made of a light-shielding material, and the core rod is provided with readable rod scale lines, so as to be used to read the volume of the liquid medicine in the syringe barrel of the light-shielding syringe.
[0018] As a preferred technical solution, the outer wall of the syringe is provided with a light-shielding coating.
[0019] As a preferred technical solution, the core rod and the piston plate are both made of light-shielding material.
[0020] Furthermore, the channel in the needle adopts a Z-shaped or S-shaped channel, and it is difficult for external light to pass through the channel and enter the syringe, thereby reducing the amount of light entering the light-shielded syringe.
[0021] Furthermore, it also includes an identification code, which is arranged on the pressing portion of the core rod and is used to store and identify factory information and usage information.
[0022] As a preferred technical solution, the specifications of the syringe include 1 mL, 2 mL, 5 mL, 10 mL or 20 mL.
[0023] One of the technical solutions of the utility model is to provide a method for using a medical disposable syringe, the method comprising the following steps:
[0024] When the core rod is pulled up or pressed down, the eccentric wheel on the core rod rotates, and the wheel protrusion acts on the syringe, or the pulley on the core rod passes through the wall protrusion, thereby vibrating the syringe and causing the bubbles attached to the inner wall of the syringe to gather at the piston plate, so that the light-shielded syringe cannot observe whether the bubbles in the syringe are discharged. The piston plate is a mesh structure with a gas separation membrane underneath, so that the gathered bubbles are discharged; the transparent part on the syringe and the wall scale lines form a contrast with the light-shielded piston plate, so as to read the volume of the medicine liquid in the light-shielded syringe, or read the volume of the medicine liquid in the light-shielded syringe through the rod scale lines.
[0025] Compared with the prior art, the utility model has the following beneficial effects:
[0026] The utility model uses the wheel protrusion of the eccentric wheel on the core rod or the wall protrusion of the inner wall slide groove of the syringe to vibrate the syringe when the core rod is pulled up or pressed down, so that the bubbles attached to the inner wall of the syringe gather to the piston plate. The piston plate is a mesh structure, and the gathered bubbles are discharged through the gas separation membrane on the piston plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic structural diagram of a disposable Chinese medicine syringe according to Embodiment 1 of the present utility model;
[0028] Figure 2 This is a schematic diagram of the structure of a disposable Chinese medicine syringe according to Embodiment 2 of the present utility model;
[0029] Figure 3 This is a schematic diagram of the detailed structure of the syringe in Example 2 of the utility model;
[0030] Figure 4 This is a schematic diagram of the detailed structure outside the syringe in Example 1 of the utility model;
[0031] Figure 5 This is a schematic diagram of the detailed structure of the needle in Example 1 of the utility model;
[0032] Figure 6 This is a schematic diagram of the detailed structure of the needle in Example 2 of the utility model.
[0033] Description of the markings in the figure:
[0034] 1—syringe, 11—light shielding part, 12—transparent part, 13—wall scale line, 14—slide groove, 15—wall protrusion, 2—core rod, 21—rod scale line, 3—piston plate, 4—gas separation membrane, 5—needle head, 51—channel, 6—eccentric wheel, 61—wheel protrusion, 7—pulley. DETAILED DESCRIPTION
[0035] The present invention is described in detail below in conjunction with specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.
[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", "third" and the like are used to describe common objects, and only refer to different instances of the same object, and are not intended to imply that the objects described in this way must adopt a given order, whether in time, space, order or any other manner.
[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] Example:
[0039] A disposable medical syringe, such as Figure 1 As shown, it includes a syringe 1, a core rod 2, a piston plate 3 and a needle 5;
[0040] One end of the syringe 1 is provided with a needle 5;
[0041] One end of the core rod 2 is provided with a piston plate 3 adapted to the inner diameter of the syringe 1 and is arranged to slide inside the syringe 1;
[0042] A sliding vibration part is provided on the core rod 2, and the core rod 2 and the syringe 1 vibrate the syringe 1 through the sliding vibration part, so that the bubbles attached to the inner wall of the syringe 1 gather to the piston plate 3, so as to avoid the light-shielded syringe being unable to observe whether the bubbles in the syringe 1 are discharged. The piston plate 3 is a mesh structure, and the other end of the piston plate 3 connected to the core rod 2 is provided with a gas separation membrane 4 adapted to the inner diameter of the syringe 1, so that the gathered bubbles are discharged.
[0043] In one embodiment, Figure 2 As shown, the sliding vibration part can be an eccentric wheel 6. The core rod 2 is provided with an eccentric wheel 6. The eccentric wheel 6 is provided with a circular wheel protrusion 61. When the core rod 2 is pulled up or pressed down, the eccentric wheel 6 rotates, and the wheel protrusion 61 acts on the syringe 1, so that the syringe 1 vibrates, and the bubbles attached to the inner wall of the syringe 1 gather toward the piston plate 3, avoiding the light-shielded syringe from being unable to observe whether the bubbles in the syringe 1 are discharged.
[0044] In one embodiment, Figure 3 As shown, the sliding vibration part can also be a pulley 7. The pulley 7 is provided on the core rod 2. The inner wall of the syringe 1 is provided with a slide groove 14. A semicircular wall protrusion 15 is provided in the slide groove 14. When the core rod 2 is pulled up or pressed down, the pulley 7 passes through the wall protrusion 15, thereby vibrating the syringe 1, causing the bubbles attached to the inner wall of the syringe 1 to gather at the piston plate 3, thereby preventing the light-shielded syringe from being unable to observe whether the bubbles in the syringe 1 are discharged.
[0045] In one embodiment, Figure 2 As shown, the syringe 1, the core rod 2 and the piston plate 3 are all made of brown light-shielding material, and scale lines can be set on the core rod 2. The core rod 2 is provided with black readable rod scale lines 21, so as to read the volume of the liquid in the light-shielded syringe.
[0046] In this embodiment, the syringe 1, the core rod 2 and the piston plate 3 are all made of brown light-shielding material. Scale lines are set on the rod of the core rod 2 to read the volume of the drug solution in the light-shielded syringe 1, thereby meeting the blind requirements of the clinical trial project and preventing solution-type drugs that need to be used away from light from being exposed to light.
[0047] In one embodiment, Figure 4 As shown, scale lines can be arranged on the syringe 1, and a transparent portion 12 is opened in the shading portion 11 on the outer wall of the syringe 1, and black readable wall scale lines 13 are arranged on the shading portion 11 next to the transparent portion 12 to form a contrast with the shading piston plate 3, so as to read the volume of the liquid in the shading syringe.
[0048] In this embodiment, the outer wall of the syringe 1 is provided with a light-shielding coating, and the volume of the drug solution in the light-shielded syringe 1 can be read through the transparent portion 12 of the outer wall of the syringe 1 and the wall scale line 13, thereby meeting the blind requirements of the clinical trial project and preventing solution-type drugs that need to be used away from light from being exposed to light.
[0049] Furthermore, if Figure 5 and Figure 6 As shown, the channel 51 in the needle 5 is a Z-shaped or S-shaped channel, and it is difficult for external light to pass through the channel 51 and enter the syringe 1, thereby reducing the amount of light entering the light-shielded syringe.
[0050] In one embodiment, an identification code is also provided on the pressing portion of the core rod 2, and the identification code is used to store factory information and information such as whether it has been used.
[0051] Furthermore, the identification code may be a QR code or a bar code.
[0052] In this embodiment, a QR code or bar code is set on the pressing part of the core rod 2 to store the factory information and usage information of the disposable syringe. When it is needed, the disposable syringe needs to be scanned when it is shipped out or opened to avoid the syringe being used twice.
[0053] The specifications of syringes are 1 mL, 2 mL, 5 mL, 10 mL and 20 mL.
[0054] The method for using the above-mentioned medical disposable syringe is as follows:
[0055] When the core rod 2 is pulled up or pressed down, the eccentric wheel 6 on the core rod 2 rotates, and the wheel protrusion 61 acts on the syringe 1, or the pulley 7 on the core rod 2 passes through the wall protrusion 15, thereby vibrating the syringe 1, and causing the bubbles attached to the inner wall of the syringe 1 to gather toward the piston plate 3, so that the light-shielded syringe cannot observe whether the bubbles in the syringe 1 are discharged. The piston plate 3 is a mesh structure with a gas separation membrane 4 underneath, so that the gathered bubbles are discharged; the transparent part 12 on the syringe 1 and the wall scale line 13 form a contrast with the light-shielded piston plate 3, so as to read the volume of the liquid medicine in the light-shielded syringe, or read the volume of the liquid medicine in the light-shielded syringe through the rod scale line 21.
[0056] Embodiment 1:
[0057] A disposable medical syringe, such as Figure 1 As shown, it includes a syringe 1, a core rod 2, a piston plate 3 and a needle 5;
[0058] One end of the syringe 1 is provided with a needle 5;
[0059] One end of the core rod 2 is provided with a piston plate 3 adapted to the inner diameter of the syringe 1 and is arranged to slide inside the syringe 1;
[0060] The core rod 2 is provided with a sliding vibration part, and the core rod 2 and the syringe 1 vibrate the syringe 1 through the sliding vibration part, so that the bubbles attached to the inner wall of the syringe 1 gather to the piston plate 3, so as to avoid the light-shielded syringe being unable to observe whether the bubbles in the syringe 1 are discharged. The piston plate 3 is a mesh structure, and the other end of the piston plate 3 connected to the core rod 2 is provided with a gas separation membrane 4 adapted to the inner diameter of the syringe 1, so that the accumulated bubbles are discharged;
[0061] The sliding vibration part includes an eccentric wheel 6. The core rod 2 is provided with the eccentric wheel 6. The eccentric wheel 6 is provided with a circular wheel protrusion 61. When the core rod 2 is pulled up or pressed down, the eccentric wheel 6 rotates, and the wheel protrusion 61 acts on the syringe 1, so that the syringe 1 vibrates, and the bubbles attached to the inner wall of the syringe 1 gather toward the piston plate 3, so as to avoid the light-shielded syringe from being unable to observe whether the bubbles in the syringe 1 are discharged.
[0062] like Figure 4 As shown, the syringe 1, the core rod 2 and the piston plate 3 are all made of brown light-shielding material;
[0063] A transparent portion 12 is formed in the light-shielding portion 11 on the outer wall of the syringe 1. A black readable wall scale line 13 is provided on the light-shielding portion 11 next to the transparent portion 12 to form a contrast with the light-shielding piston plate 3, thereby reading the liquid volume in the light-shielding syringe.
[0064] like Figure 5 As shown, the channel 51 in the needle 5 is an S-shaped channel, and it is difficult for external light to pass through the channel 51 and enter the syringe 1, thereby reducing the amount of light entering the light-shielded syringe.
[0065] The specifications of the syringe are divided into 1 mL, 2 mL, 5 mL, 10 mL and 20 mL, and 5 mL is preferred in this embodiment.
[0066] The method for using the above-mentioned medical disposable syringe is as follows:
[0067] When the core rod 2 is pulled up or pressed down, the eccentric wheel 6 on the core rod 2 rotates, and the wheel protrusion 61 acts on the syringe 1, thereby vibrating the syringe 1, causing the bubbles attached to the inner wall of the syringe 1 to gather toward the piston plate 3, so that the light-shielded syringe cannot observe whether the bubbles in the syringe 1 are discharged. The piston plate 3 is a mesh structure with a gas separation membrane 4 underneath, so that the gathered bubbles are discharged; the transparent part 12 and the wall scale line 13 on the syringe 1 form a contrast with the light-shielded piston plate 3, so as to read the liquid volume in the light-shielded syringe.
[0068] Embodiment 2:
[0069] A disposable medical syringe, such as Figure 2 and Figure 3As shown, it is basically the same as Example 1, except that the sliding vibration part includes a pulley 7, the core rod 2 is provided with a pulley 7, the inner wall of the syringe 1 is provided with a slide groove 14, and a semicircular wall protrusion 15 is provided in the slide groove 14. When the core rod 2 is pulled up or pressed down, the pulley 7 passes through the wall protrusion 15, thereby vibrating the syringe 1, so that the bubbles attached to the inner wall of the syringe 1 gather at the piston plate 3, so as to avoid the light-shielded syringe from being unable to observe whether the bubbles in the syringe 1 are discharged;
[0070] The core rod 2 and the piston plate 3 are both made of brown light-shielding material, and the outer wall of the syringe 1 is provided with a light-shielding coating;
[0071] The core rod 2 is provided with black readable rod scale lines 21, so as to read the volume of the liquid medicine in the light-shielded syringe.
[0072] like Figure 6 As shown, the channel 51 in the needle 5 is a Z-shaped channel, and it is difficult for external light to pass through the channel 51 and enter the syringe 1, thereby reducing the amount of light entering the light-shielded syringe.
[0073] The pressing portion of the core rod 2 is also provided with an identification code, which is used to store factory information and information such as whether the device has been used.
[0074] The identification code may be a QR code or a bar code, and in this embodiment, a QR code is preferred.
[0075] In this embodiment, a QR code or bar code is set on the pressing part of the core rod 2 to store the factory information and usage information of the disposable syringe. When it is needed, the disposable syringe needs to be scanned when it is shipped out or opened to avoid the syringe being used twice.
[0076] The method for using the above-mentioned medical disposable syringe is as follows:
[0077] When the core rod 2 is pulled up or pressed down, the pulley 7 on the core rod 2 passes through the wall protrusion 15, thereby vibrating the syringe 1, causing the bubbles attached to the inner wall of the syringe 1 to gather toward the piston plate 3, to prevent the light-shielded syringe from being unable to observe whether the bubbles in the syringe 1 are discharged. The piston plate 3 is a mesh structure with a gas separation membrane 4 underneath, so that the gathered bubbles are discharged; the volume of the liquid in the light-shielded syringe is read through the rod scale line 21.
[0078] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.
Claims
1. A medical disposable syringe, characterized in that: It comprises a syringe (1), a core rod (2), a piston plate (3) and a needle (5); One end of the syringe (1) is provided with a needle (5); One end of the core rod (2) is provided with a piston plate (3) which is arranged to slide inside the syringe (1); The core rod (2) is provided with a sliding vibration part, and the core rod (2) and the syringe (1) vibrate the syringe (1) through the sliding vibration part, thereby causing bubbles attached to the inner wall of the syringe (1) to gather toward the piston plate (3); The sliding vibration part comprises a pulley (7). The inner wall of the syringe (1) is provided with a sliding groove (14). A wall protrusion (15) is provided in the sliding groove (14). The pulley (7) slides in the sliding groove (14) and collides with the wall protrusion (15), thereby causing the syringe (1) to vibrate.
2. A medical disposable syringe according to claim 1, characterized in that: The piston plate (3) is a mesh structure.
3. A medical disposable syringe according to claim 1 or 2, characterized in that: A gas separation membrane (4) is provided on the other end of the piston plate (3) that is connected to the core rod (2).
4. A medical disposable syringe according to claim 3, characterized in that: The piston plate (3) is adapted to the inner diameter of the syringe (1), and / or The gas separation membrane (4) is adapted to the inner diameter of the syringe (1).
5. A medical disposable syringe according to claim 1, characterized in that: A light shielding portion (11) is provided on the outer wall of the syringe (1), a transparent portion (12) is provided in the light shielding portion (11), and a wall scale line (13) is provided on the light shielding portion (11) next to the transparent portion (12).
6. A medical disposable syringe according to claim 1, characterized in that: The syringe (1) is made of a light-shielding material, and the core rod (2) is provided with a rod scale line (21) for reading the volume of the liquid medicine in the syringe (1).
7. A medical disposable syringe according to claim 1, characterized in that: The channel (51) in the needle (5) is a Z-shaped or S-shaped channel.
8. A medical disposable syringe according to claim 1, characterized in that: It also includes an identification code, which is arranged on the pressing portion of the core rod (2) and is used to store and identify factory information and usage information.