Medical conductive paste syringe needle with protection function

Abstract

The utility model relates to a medical conductive paste syringe needle with a protection function, which comprises a mounting seat detachably connected with the output end of a syringe and a conductive paste injection pipeline communicated with the inside of the mounting seat, and a protection head is arranged at one end, far away from the mounting seat, of the conductive paste injection pipeline. A channel allowing conductive paste to pass through is formed in the protection head, the surface of the outer wall of the protection head protrudes in the circumferential direction of the outer wall of the conductive paste injection pipeline, the opening position of the end, away from the installation base, of the channel is flush with the adjacent edge of the channel, and the top of the protection head is in a hemisphere shape and extends downwards to form a circular truncated cone shape along one end of the hemisphere plane. The lower bottom surface of the circular truncated cone is connected with the hemispherical bottom surface, and the side surface of the circular truncated cone shrinks downwards to be circumferentially connected with the paste outlet of the conductive paste injection pipeline. The utility model solves the problems of easy scratching and inconvenient use.

Description

Technical Field

[0001] The utility model relates to a medical conductive paste syringe needle, in particular to a medical conductive paste syringe needle with a protective function. Background Art

[0002] During EEG research conducted while wearing an EEG cap, conductive paste is injected through the electrode injection port. This paste acts as a bridge between the subtle potential changes on the scalp and the cap. Medical conductive paste is a highly conductive, fluid gel that is used with the EEG cap. It effectively reduces the contact impedance between the electrode surface and the skin, ensuring continuous high-quality signal transmission for signal acquisition.

[0003] Currently, a syringe is typically used to inject conductive paste. However, the needles used in existing syringes have sharp edges at the paste outlet and are made of stainless steel, increasing the risk of improper operation and making them inconvenient to use. Furthermore, metal needles are expensive.

[0004] Chinese utility model patent announcement number: CN212755676U, discloses an improved EEG conductive paste needle, which records: the angle at which the EEG conductive paste needle fits the active electrode cap is half-bent, the conductive paste outlet is located above and below the EEG conductive paste needle, spatially connecting the active electrode of the active electrode cap and the scalp of the EEG experiment subject, and the needle tail of the EEG conductive paste needle is in a closed state. The above method achieves the purpose of facilitating insertion under the electrode, and this application provides another solution to solve the risks and inconveniences brought to patients by improper operation.

[0005] Chinese utility model patent announcement number: CN209529360U, discloses a dental heat-carrying needle with a teardrop-shaped needle tip, which has a needle with a teardrop-shaped needle tip, a needle fixing tube for fixing the needle, a tail tube, a fixing piece, and a heating wire; the needle and the tail tube are respectively arranged at the two ends of the needle fixing tube, and the needle and the needle fixing tube are connected by welding; the needle fixing tube and the tail tube are respectively welded to the needle and the tail tube at the needle tip and the tail tube end so that the tail tube and the needle fixing tube form the two poles of a thermocouple, and the needle is heated and heated after power is turned on. The above technical solution solves the problem of being unable to expand the root canal opening and compact the gutta-percha. Although the above technical solution mentions a needle with a teardrop-shaped needle tip, its function is to compact the gutta-percha.

[0006] Therefore, it is necessary to provide a conductive paste syringe needle that is more convenient to use and more protective for the subject. Utility Model Content

[0007] The utility model provides a medical conductive paste syringe needle with a protective function, which solves the problems of easy scratching and inconvenience in use.

[0008] To achieve the above-mentioned purpose, the technical solution of the utility model is: a medical conductive paste syringe needle with a protective function, comprising a mounting base detachably connected to the output end of the syringe and a conductive paste injection pipe connected to the inside of the mounting base, a protective head is provided at the end of the conductive paste injection pipe away from the mounting base, a channel for the conductive paste to pass through is opened inside the protective head, the outer wall surface of the protective head is circumferentially raised along the outer wall of the conductive paste injection pipe, the opening of the end of the channel away from the mounting base is flush with the adjacent edge, the top of the protective head is hemispherical, and a truncated cone shape is extended downward along one end of the hemispherical plane, the lower bottom surface of the truncated cone is connected to the bottom surface of the hemispherical shape, and the side surface of the truncated cone shrinks downward to be circumferentially connected to the paste outlet of the conductive paste injection pipe.

[0009] As a further improvement, the channel runs through two opposite ends of the interior of the protective head, and the edge of the opening at one end of the conductive paste injection pipe away from the mounting seat is integrally formed with the edge of the opening at one end of the channel.

[0010] As a further improvement, the channel runs through the two opposite ends of the protective head, the end of the conductive paste injection pipe away from the mounting seat is inserted into the channel and fixedly connected to the inner wall surface of the channel, and the paste outlet of the conductive paste injection pipe is flush with the opening of the end of the channel away from the mounting seat.

[0011] As a further improvement, the channel runs through the two opposite ends of the protective head, the outer surface of the end of the conductive paste injection pipe away from the mounting seat forms an external thread, the inner wall surface of the channel forms an internal thread that matches the external thread, and the outer surface of the end of the conductive paste injection pipe away from the mounting seat forms a limiting portion in the circumferential direction. When one end of the protective head contacts the limiting portion, the paste outlet of the conductive paste injection pipe is flush with the opening of the end of the channel away from the mounting seat.

[0012] As a further improvement, the protective head is in the shape of an inverted water drop.

[0013] As a further improvement, the protective head is a soft structure, preferably made of silicone.

[0014] As a further improvement, the conductive paste injection pipe is a polytetrafluoroethylene hose.

[0015] As a further improvement, the conductive paste injection pipe is translucent.

[0016] As a further improvement, the maximum diameter of the protective head is 3 to 5 mm, preferably 4 mm.

[0017] As a further improvement, the conductive paste injection pipe is 3 to 5 cm long.

[0018] The above technical solution of the present invention has the following beneficial effects: The present invention minimizes the risk of skin and scalp scratches by designing a specific shape of the protective head. The protective head is set to have a hemispherical top, and a truncated cone shape extends downward from one end of the hemispherical plane, and the side of the truncated cone shrinks downward to a structure that is circumferentially connected to the paste outlet of the conductive paste injection pipe. This not only protects the subject but also makes it easier to withdraw the needle from the electrode injection hole, making it more convenient to use and reducing the risk to the patient due to improper operation. In addition, the material used for the conductive paste injection pipe of the present application is preferably PTFE hose, which has strong resistance to chemical agents, especially the characteristics of being resistant to corrosion by acids, alkalis, acidifiers, and organic solvents. It is low in cost and can be replaced at will if the head end is blocked. It is odorless and non-toxic, further enhancing the safety and reliability of the product. The opening of the channel at the end away from the mounting seat is flush with its adjacent edge. In other words, the opening of the channel at the end of the protective head away from the mounting seat and its edge are smooth and regular surfaces without sharp edges, preventing scratches and protecting the patient. At the same time, the volume of space inside the EEG cap electrode can be estimated by the distance from one end of the protective head to the skin surface, thereby estimating the injection volume and avoiding waste caused by excessive injection of conductive paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal perspective overall structure of one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the overall structure of one of the usage states of the utility model;

[0025] Figure 7 Schematic diagram of the overall structure of an EEG cap in the prior art;

[0026] Figure 8 This is a schematic diagram of the overall structure of a syringe and needle for injecting conductive paste in the prior art.

[0027] Figure numerals: 1. Mounting seat, 2. Conductive paste injection pipe, 3. Protective head, 4. Channel, 5. External thread, 6. Limiting part, 7. Paste outlet, 8. EEG cap, 9. Electrode injection hole. DETAILED DESCRIPTION

[0028] The following examples further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and essence of the present invention, modifications or replacements made to the methods, steps or conditions of the present invention are within the scope of the present invention.

[0029] The following describes the implementation of the present invention in detail with reference to the accompanying drawings and examples.

[0030] See also Figures 1 to 6As shown, the utility model discloses a medical conductive paste syringe needle with a protective function, comprising a mounting base 1 detachably connected to the output end of the syringe and a conductive paste injection pipe 2 connected to the interior of the mounting base 1, a protective head 3 is provided at one end of the conductive paste injection pipe 2 away from the mounting base 1, a channel 4 for the conductive paste to pass through is opened inside the protective head 3, the outer wall surface of the protective head 3 is circumferentially raised along the outer wall of the conductive paste injection pipe 2, the opening of the end of the channel 4 away from the mounting base 1 is flush with the adjacent edge, the top of the protective head 3 is hemispherical, and a truncated cone shape is extended downward along one end of the hemispherical plane. The lower bottom surface is connected to the bottom surface of the hemispherical shape, and the truncated cone-shaped side surface shrinks downward to be circumferentially connected to the paste outlet of the conductive paste injection pipe 2. When the medical conductive paste syringe needle with a protective function of the present application is used, the mounting seat 1 is installed on the syringe for use. The interior of the mounting seat 1 is connected to the interior of the syringe through the output end of the syringe. After pushing the push rod of the syringe, the conductive paste in the syringe enters the mounting seat 1, and further enters the conductive paste injection pipe 2 connected to the interior of the mounting seat 1, and finally passes through the protective head 3 and is pushed out from the end opening of the protective head 3. It should be noted that the conductive paste injection pipe 2 is away from the mounting seat 1. A protective head 3 is provided at one end of the mounting seat 1, and a channel 4 is formed inside the protective head 3 through both ends, and the end of the conductive paste injection pipe 2 away from the mounting seat 1 is fixedly connected to the opening of the channel 4 of the protective head 3 or formed as one piece, or the end of the conductive paste injection pipe 2 away from the mounting seat 1 is inserted into the channel 4 of the protective head 3 and fixedly connected to the inner wall of the channel 4, wherein the opening of the conductive paste injection pipe 2 away from the mounting seat 1 can be located in the channel 4 or flush with the opening of the end of the channel 4 away from the mounting seat 1, or the conductive paste injection pipe 2 and the protective head 3 can be detachably connected, preferably An internal thread is formed in the channel 4 of the protective head 3, and an external thread 5 that is compatible with the internal thread is formed on the outer wall surface of the end of the conductive paste injection pipe 2 away from the mounting seat 1, so that the protective head 3 can be easily disassembled when needed. The outer wall surface of the protective head 3 is circumferentially raised along the outer wall of the conductive paste injection pipe 2, that is, the outer shape of the protective head 3 can be a rugby ball shape, or when the needle is placed normally, that is, the mounting seat 1 is located at the bottom and the conductive paste injection pipe 2 is placed at the top, the protective head 3 is in the shape of an inverted teardrop, or a sphere. The specific shape of the protective head 3 is designed to minimize the risk of scratches on the skin and scalp.The protective head 3 can be used for the electrode injection hole 9 of the EEG cap 8 of similar size (such as children), and has strong applicability. The top of the protective head 3 is hemispherical, and a truncated cone is extended downward along one end of the hemispherical plane. The lower bottom surface of the truncated cone is connected to the bottom surface of the hemispherical shape, and the side surface of the truncated cone shrinks downward to be circumferentially connected to the outlet of the conductive paste injection pipe 2. Since some of the electrode injection holes 9 of the EEG cap 8 are provided with sealing rings or elastic blocks to prevent a certain amount of conductive paste from flowing out, the protective head 3 is set as the top in this application. It is hemispherical, with a truncated cone extending downward from one end of the hemispherical plane, and the side of the truncated cone shrinks downward to a structure circumferentially connected to the paste outlet of the conductive paste injection pipe 2. This protects the subject and makes it easier to withdraw the needle from the electrode injection hole 9, making it more convenient to use. It can also be in the shape of an inverted teardrop. The inverted teardrop-shaped protective head 3 is characterized by an enlarged tail end and an arc shape. Compared with the existing sharp-edged stainless steel needles, it better protects the subject and reduces the risk to the patient due to improper operation. The material used for the conductive paste injection pipe 2 of this application is preferably PTFE hose. Polytetrafluoroethylene (PTFE for short) is a high molecular polymer made by polymerization of tetrafluoroethylene as a monomer. Its chemical formula is (C2F4)n. It has strong resistance to chemical agents, especially anti-corrosion properties such as acid, alkali, acidifying agents, and organic solvents. It is several times superior to PP and PE hoses, has low cost, and can be replaced at will after the head end is blocked. The product is odorless and non-toxic, further enhancing its safety and reliability. The opening of channel 4 at the end away from the mounting base 1 is flush with its adjacent edge. This means that the opening of channel 4 and its edge at the end of the protective head 3 away from the mounting base 1 are smooth and regular, without sharp edges, preventing scratches and protecting the patient. Furthermore, the distance between the end of the protective head 3 and the skin surface can be used to estimate the volume of space within the electrodes of the EEG cap 8, thereby estimating the injection volume and avoiding waste caused by excessive injection of conductive paste.

[0031] Please refer to Figure 2 As shown, specifically, the channel 4 passes through the two opposite ends of the protective head 3, and the edge of the opening at one end of the conductive paste injection pipe 2 away from the mounting seat 1 is integrally formed with the edge of the opening at one end of the channel 4. The integrally formed connection makes the connection between the structures more stable. In this way, when moving, the conductive paste first enters the conductive paste injection pipe 2 through the mounting seat 1, and further enters the channel 4 and is pushed out from the opening at the end of the channel 4, further reducing the risk of scratches on the skin and scalp. The opening at the end of the channel 4 extends to its outer peripheral surface as a smooth and regular surface without sharp edges, thereby preventing scratches and protecting the patient.

[0032] Please refer to Figure 1As shown, specifically, the channel 4 passes through the two opposite ends of the protective head 3, and the end of the conductive paste injection pipe 2 away from the mounting seat 1 is inserted into the channel 4 and fixedly connected to the inner wall surface of the channel 4. The paste outlet 77 of the conductive paste injection pipe 2 is flush with the opening of the end of the channel 4 away from the mounting seat 1. In this way, the conductive paste directly enters the conductive paste injection pipe 2 through the mounting seat 1 when moving, and is finally pushed out from the end opening thereof. The paste outlet 7 of the conductive paste injection pipe 2 coincides with and is flush with the opening position of the channel 4 away from the mounting seat 1, further reducing the risk of scratches on the skin and scalp. The end opening of the channel 4 extends to its outer peripheral surface as a smooth and regular surface without sharp edges, thereby preventing scratches and protecting the patient.

[0033] Please refer to Figure 3 As shown, specifically, the channel 4 passes through the two opposite ends of the interior of the protective head 3, and an external thread 5 is formed on the outer surface of the end of the conductive paste injection pipe 2 away from the mounting seat 1, and an internal thread is formed on the inner wall surface of the channel 4 to match the external thread 5. A limiting portion 6 is formed circumferentially on the outer surface of the end of the conductive paste injection pipe 2 away from the mounting seat 1. When one end of the protective head 3 contacts the limiting portion 6, the paste outlet 7 of the conductive paste injection pipe 2 is flush with the opening of the end of the channel 4 away from the mounting seat 1. This not only further allows the conductive paste to directly enter the conductive paste injection pipe 2 through the mounting seat 1 during movement and eventually be pushed out from its end opening, but also the paste outlet 7 of the conductive paste injection pipe 2 coincides with and is flush with the opening position of the channel 4 away from the mounting seat 1, further The risk of scratching the skin and scalp is effectively reduced. The end opening of the channel 4 extends to its outer peripheral surface into a smooth and regular surface without sharp edges to prevent scratches and protect the patient. At the same time, the protective head 3 can be detached through the cooperation of the internal thread and the external thread 5, which is convenient for using a syringe to extract the conductive paste. Or when the conductive paste is injected, there is still excess conductive paste in the syringe that has not been used up. The protective head 3 can be removed and the remaining conductive paste can be directly injected back into the original package through the conductive paste injection pipe 2 and wait for the next use. The limiting part 6 is used to prevent the protective head 3 from continuing to move toward the mounting seat 1, thereby preventing the paste outlet 7 of the conductive paste injection pipe 2 from exceeding the end opening of the channel 4, further preventing scratches and protecting the patient.

[0034] Please refer to Figure 2 as well as Figure 4 and Figure 5As shown, specifically, the protective head 3 is in the shape of an inverted teardrop. The specific shape of the protective head 3 minimizes the risk of scratches on the skin and scalp. It is preferably in the shape of an inverted teardrop, that is, when the needle is placed normally, the protective head 3 has an inverted teardrop shape, that is, the mounting seat 1 is located at the bottom, and the conductive paste injection pipe 2 is placed at the top. The inverted teardrop-shaped protective head 3 is characterized by a swollen tail end and an arc shape. Compared with the existing stainless steel needles with sharp edges, it better protects the subject and reduces the risks to the patient due to improper operation. The inverted teardrop-shaped design helps the needle to be inserted and removed more smoothly. Due to the characteristics of its shape and material, the inverted teardrop shape can more accurately locate the conductive paste hole and reservoir, ensuring that it can be smoothly injected into the correct position and improving the success rate.

[0035] Please refer to Figure 6 As shown, specifically, the protective head 3 is a soft structure, preferably made of silicone material, which further prevents scratches and protects the patient. At the same time, its material is tasteless, odorless, non-toxic, and chemically inactive, further enhancing the safety and reliability of the medical conductive paste syringe needle with protective function of the present application.

[0036] Please refer to Figure 6 As shown, specifically, polytetrafluoroethylene (PTFE) is a high molecular polymer prepared by polymerization of tetrafluoroethylene as a monomer, with the chemical formula (C2F4)n. It has strong resistance to chemical agents, especially resistance to corrosion by acids, alkalis, acidifiers, and organic solvents. It is several times superior to PP and PE hose materials, has low cost, and can be replaced at will after the head end is blocked. It uses extremely soft plastic material, and the conductive paste injection pipe 2 can be bent arbitrarily and has a smooth surface, which reduces friction with the EEG disc electrode. Preferably, the conductive paste injection pipe 2 is translucent, which is convenient for the operator to observe the injection of the conductive paste. It is specially designed for the injection of conductive paste and has a complete size to meet the injection of different electrode apertures.

[0037] Please refer to Figure 1 As shown, specifically, the conductive paste injection pipe 2 is translucent, which further facilitates the operator to observe the injection status of the conductive paste.

[0038] Please refer to Figure 1 As shown, specifically, the maximum diameter of the protective head 3 is 3 to 5 mm, preferably 4 mm, which further helps the needle to be inserted and removed more smoothly, ensures that it can be smoothly injected into the correct position, and improves the success rate.

[0039] Please refer to Figure 1As shown, specifically, the length of the conductive paste injection pipe 2 is 3 to 5 cm. Furthermore, the surface of the conductive paste injection pipe 2 is provided with a scale indicating the length. Before the patient uses it, the distance from the end opening of the protective head 3 to the skin surface can be used to estimate the spatial volume inside the electrode of the EEG cap 8, thereby estimating the injection amount of the conductive paste to avoid waste due to excessive injection of conductive paste.

[0040] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A medical conductive paste syringe needle with protective function, characterized by: The invention comprises a mounting seat (1) detachably connected to the output end of the syringe and a conductive paste injection pipe (2) connected to the inside of the mounting seat (1); a protective head (3) is provided at one end of the conductive paste injection pipe (2) away from the mounting seat (1); a channel (4) for the conductive paste to pass through is provided inside the protective head (3); the outer wall surface of the protective head (3) is circumferentially raised along the outer wall of the conductive paste injection pipe (2); the opening of the channel (4) at one end away from the mounting seat (1) is flush with the adjacent edge thereof; the top of the protective head (3) is hemispherical, and a truncated cone shape is extended downward along one end of the hemispherical plane; the lower bottom surface of the truncated cone is connected to the bottom surface of the hemispherical shape; and the side surface of the truncated cone shrinks downward to be circumferentially connected to the paste outlet of the conductive paste injection pipe (2).

2. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The channel (4) passes through two opposite ends of the interior of the protective head (3), and the edge of the opening at one end of the conductive paste injection pipe (2) away from the mounting seat (1) is integrally formed with the edge of the opening at one end of the channel (4).

3. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The channel (4) passes through two opposite ends of the interior of the protective head (3); the end of the conductive paste injection pipe (2) away from the mounting seat (1) is inserted into the channel (4) and fixedly connected to the inner wall surface of the channel (4); the paste outlet (7) of the conductive paste injection pipe (2) is flush with the opening of the end of the channel (4) away from the mounting seat (1).

4. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The channel (4) passes through two opposite ends of the interior of the protective head (3); an outer surface of the end of the conductive paste injection pipe (2) away from the mounting seat (1) forms an external thread (5); an inner wall surface of the channel (4) forms an internal thread that matches the external thread (5); a circumferential outer surface of the end of the conductive paste injection pipe (2) away from the mounting seat (1) forms a limiting portion (6); when one end of the protective head (3) contacts the limiting portion (6), the paste outlet (7) of the conductive paste injection pipe (2) is flush with the opening of the end of the channel (4) away from the mounting seat (1).

5. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The protective head (3) is in the shape of an inverted water drop.

6. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The protective head (3) is a soft structure.

7. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The conductive paste injection pipe (2) is a polytetrafluoroethylene hose.

8. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The conductive paste injection pipe (2) is translucent.

9. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The maximum diameter of the protective head (3) is 3 to 5 mm.

10. The medical conductive paste syringe needle with protective function according to claim 1, characterized in that: The conductive paste injection pipe (2) is 3 to 5 cm long.

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