Double-channel filtering dosing injector

Abstract

The utility model relates to the technical field of syringes, in particular to a double-channel filtering dosing syringe which comprises a transfer tube, one end of the transfer tube is communicated with a medicine inlet tube and a medicine outlet tube, needle heads are installed at the ends, away from the transfer tube, of the medicine inlet tube and the medicine outlet tube, a piston assembly is installed on the transfer tube, a filter is installed in the medicine inlet tube, and a filter is installed in the medicine outlet tube. And a filter membrane is mounted in the medicine outlet pipe. The medicine inlet pipe and the medicine outlet pipe are connected through the transfer pipe, the filter is arranged in the medicine inlet pipe, and the filter membrane is arranged in the medicine outlet pipe, so that double filtration of medicine is achieved, and safety and purity of injection medicine are effectively improved. Meanwhile, the medicine inlet pipe is designed to be a first half pipe and a second half pipe which are in threaded connection and is convenient to disassemble and clean, and due to the synchronous screwing design of the first external pipe and the connecting sleeve, the filter is more convenient to install and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to syringe technical field, concretely is a kind of double-channel filtration medicine adding syringe. BACKGROUND

[0002] In the medical field, syringe as a common medical instrument is widely used in the injection and delivery of drug. However, there are some deficiencies in the design and use of traditional syringe, especially in drug filtration. Traditional syringe usually only has a single drug channel, and lacks effective filtering mechanism, which may cause impurities and particulate matter in the drug to directly enter the patient's body, thereby affecting the treatment effect and the safety of patients.

[0003] In actual medical operation, the purity and safety of drug are crucial. The presence of impurities and particulate matter may not only affect the efficacy of drug, but also may cause allergic reactions or other adverse reactions in patients. Therefore, in order to ensure the purity and safety of drug, the syringe needs to be improved to increase the filtering function of drug.

[0004] In addition, the installation and replacement of filter in traditional syringe are often cumbersome, which affects the efficiency of medical work and the service life of syringe. In view of this, we propose a double-channel filtration medicine adding syringe. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a kind of double-channel filtration medicine adding syringe.

[0006] The technical scheme of the utility model is:

[0007] A kind of double-channel filtration medicine adding syringe, including transfer pipe, the transfer pipe one end is communicated with the medicine inlet pipe and the medicine outlet pipe, the medicine inlet pipe and the medicine outlet pipe are away from the needle of the medicine inlet pipe and the medicine outlet pipe end installation, the transfer pipe is installed with piston assembly, the medicine inlet pipe is installed with filter, the medicine outlet pipe is installed with filter membrane, the medicine inlet pipe includes the first half pipe and the second half pipe of screw connection, the medicine inlet pipe is installed with the first external tube and the first internal tube of communication with the needle, the first internal tube is installed with first check valve, the filter both ends are equipped with connecting sleeve, two connecting sleeve are respectively first external tube and first internal tube screw connection, and the first half pipe is screwed on the second half pipe, the first external tube is synchronized on the connecting sleeve when being screwed.

[0008] As a preferred technical scheme, the filter membrane both ends are respectively installed with the second external tube and the second internal tube of communication with the needle tube and the inside of transfer pipe, the second internal tube is installed with second check valve.

[0009] As a preferred technical scheme, each needle head is provided with a protective sleeve, and the protective sleeve is clamped and connected to the medicine inlet pipe and the medicine outlet pipe.

[0010] As a preferred technical scheme, the transfer pipe is fixedly connected with a partition plate inside, and the partition plate is provided with a gas permeable hole.

[0011] As a preferred technical scheme, the piston assembly comprises a piston body and a piston rod fixed to the outer wall of the piston body, and a pressing plate is fixedly installed at the outer end of the piston rod.

[0012] As a preferred technical scheme, the first outer connecting pipe passes through the first half pipe and is coaxially fixedly connected to the first half pipe, and a limiting strip passing through the first half pipe is integrally formed on the outer wall of the first outer connecting pipe.

[0013] As a preferred technical scheme, the second half pipe, the transfer pipe and the medicine outlet pipe are integrally formed.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a medicine injection device, which comprises a medicine inlet pipe, a medicine outlet pipe and a transfer pipe, wherein the medicine inlet pipe is connected to the medicine outlet pipe through the transfer pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the internal structure schematic diagram of the utility model Figure 1 ;

[0018] Figure 3 It is the structure schematic diagram of the filter, the first outer connecting pipe and the first inner connecting pipe in the utility model

[0019] Figure 4 It is the enlarged view of A place in the utility model Figure 2 ;

[0020] The meaning of each reference numeral in the drawing is as follows:

[0021] 1, transfer pipe; 10, partition plate; 11, air hole; 2, piston rod; 20, pressing plate; 21, piston body; 3, medicine inlet pipe; 30, first half pipe; 31, second half pipe; 32, first inner connecting pipe; 33, first check valve; 34, first outer connecting pipe; 340, limiting strip; 4, medicine outlet pipe; 40, second inner connecting pipe; 41, second check valve; 42, second outer connecting pipe; 5, protective sleeve; 6, needle pipe; 7, filter; 70, connecting sleeve; 8, filter membrane. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0024] A double-channel filtering medicine adding injector, including transfer pipe 1, the one end of transfer pipe 1 is communicated with medicine inlet pipe 3 and medicine outlet pipe 4, and the needle is installed at the end away from transfer pipe 1 of medicine inlet pipe 3 and medicine outlet pipe 4, and the piston assembly is installed on transfer pipe 1, and the filter 7 is installed in medicine inlet pipe 3, and the filter membrane 8 is installed in medicine outlet pipe 4, and medicine inlet pipe 3 includes the first half pipe 30 and the second half pipe 31 that are connected by screw thread, and the first outer connecting pipe 34 that is communicated with needle and the first inner connecting pipe 32 that is communicated with transfer pipe 1 are installed in medicine inlet pipe 3, and the first check valve 33 is installed on the first inner connecting pipe 32, and the connecting sleeve 70 is arranged at both ends of filter 7, and the two connecting sleeves 70 are respectively connected with first outer connecting pipe 34 and first inner connecting pipe 32 by screw thread, and when the first half pipe 30 is screwed on the second half pipe 31, the first outer connecting pipe 34 is screwed on the connecting sleeve 70 simultaneously. The injector connects medicine inlet pipe 3 and medicine outlet pipe 4 through transfer pipe 1, and filter 7 is arranged in medicine inlet pipe 3 and filter membrane 8 is arranged in medicine outlet pipe 4, which realizes double filtering of medicine and effectively improves the safety and purity of injected medicine. At the same time, medicine inlet pipe 3 is designed as the first half pipe 30 and the second half pipe 31 connected by screw thread, which is convenient for disassembly and cleaning, and the synchronous screwing design of first outer connecting pipe 34 and connecting sleeve 70 makes the installation and replacement of filter 7 more convenient.

[0025] As the preferred embodiment of the present application, the filter membrane 8 is provided with a second external connecting pipe 42 and a second internal connecting pipe 40 at both ends, respectively, which are in communication with the needle pipe 6 and the inside of the transfer pipe 1, and the second internal connecting pipe 40 is provided with a second check valve 41. By installing the second external connecting pipe 42 and the second internal connecting pipe 40 at both ends of the filter membrane 8 and setting the second check valve 41, the unidirectional flow of the drug during injection is further ensured, the backflow and contamination of the drug are prevented, and the safety and accuracy of injection are improved.

[0026] As the preferred embodiment of the present application, a protective sleeve 5 is arranged outside each needle, and the protective sleeve 5 is clamped and connected to the medicine inlet pipe 3 and the medicine outlet pipe 4. The protective sleeve 5 arranged outside each needle not only effectively protects the needle from contamination and damage, but also provides additional safety protection when the syringe is not in use to prevent accidental puncture.

[0027] As the preferred embodiment of the present application, a partition plate 10 is fixedly connected inside the transfer pipe 1, and a gas permeable hole 11 is formed in the partition plate 10. The fixed partition plate 10 and the gas permeable hole 11 formed in the transfer pipe 1 can effectively avoid the contact between the drug and the piston.

[0028] As the preferred embodiment of the present application, the piston assembly includes a piston body 21 and a piston rod 2 fixed to the outer wall of the piston body 21, and a pressing plate 20 is fixedly installed at the outer end of the piston rod 2. The design of the piston assembly, especially the pressing plate 20 fixed at the outer end of the piston rod 2, makes it more convenient and labor-saving for the operator to push or pull out the piston, thereby improving the convenience and comfort of the syringe.

[0029] As the preferred embodiment of the present application, the first external connecting pipe 34 penetrates through the first half pipe 30 and is fixedly connected coaxially with the first half pipe 30, and a limiting strip 340 penetrating through the first half pipe 30 is integrally formed on the outer wall of the first external connecting pipe 34. The penetrating and coaxial fixed connection of the first external connecting pipe 34 through the first half pipe 30 and the limiting strip 340 integrally formed on the outer wall of the first external connecting pipe 34 ensure the stability and positioning accuracy of the first external connecting pipe 34 in the first half pipe 30, and prevent loosening or displacement during use.

[0030] As the preferred embodiment of the present application, the second half pipe 31, the transfer pipe 1 and the medicine outlet pipe 4 are integrally formed. This not only improves the overall strength and stability of the syringe, but also reduces the connecting components and potential leakage points, making the syringe more durable and reliable.

[0031] The double-channel filtering and medicine adding syringe of the present application comprises the following steps when in use:

[0032] Firstly, the operator needs to prepare the drug to be injected and the syringe. Before injection, the protective sleeves 5 outside the two needles are ensured to be in the clamped state to protect the needles from contamination and accidental puncture.

[0033] Next, the operator will inject the drug through the needle of the medicine inlet tube 3. After entering the medicine inlet tube 3, the drug will first pass through the filter 7 for the first filtration to remove impurities and particulate matter in the drug. The filter 7 is threadedly connected with the first outer connecting tube 34 and the first inner connecting tube 32 through two connecting sleeves 70, respectively, to ensure the stability and sealing of the filter 7. At the same time, the threaded connection design of the first half tube 30 and the second half tube 31, and the synchronous screwing design of the first outer connecting tube 34 and the connecting sleeve 70 make the installation and replacement of the filter 7 more convenient.

[0034] After being filtered by the filter 7, the drug will enter the transfer tube 1. The fixed partition plate 10 and the gas permeable hole 11 in the transfer tube 1 can effectively prevent the drug from directly contacting the piston, thereby ensuring the purity of the drug.

[0035] After the drug enters the transfer tube 1, the operator pushes the pressing plate 20 on the piston rod 2 to move the piston body 21 in the transfer tube 1, thereby pushing the drug to the medicine outlet tube 4.

[0036] After entering the medicine outlet tube 4, the drug will be filtered again by the filter membrane 8 for the second filtration to further remove the small impurities and particulate matter in the drug. The filter membrane 8 is installed with a second outer connecting tube 42 communicated with the needle tube 6 and a second inner connecting tube 40 communicated with the inside of the transfer tube 1 at both ends, and a second check valve 41 is arranged on the second inner connecting tube 40. Such design not only ensures the one-way flow of the drug during injection, but also prevents backflow and contamination of the drug.

[0037] Finally, the double-filtered drug will be injected through the needle of the medicine outlet tube 4. During the entire injection process, the two check valves (the first check valve 33 and the second check valve 41) both play a role in preventing backflow and contamination of the drug, thereby improving the safety and accuracy of injection.

[0038] In summary, the double-channel filter medicine injector of the present application connects the medicine inlet tube 3 and the medicine outlet tube 4 through the transfer tube 1, and sets the filter 7 in the medicine inlet tube 3 and the filter membrane 8 in the medicine outlet tube 4, thereby realizing double filtration of the drug. At the same time, the ingenious design of each component also improves the convenience and safety of the injector.

[0039] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dual-channel filtering dosing syringe, characterized in that: The system includes a transfer tube (1), one end of which is connected to an inlet tube (3) and an outlet tube (4). A needle is installed at the end of both the inlet tube (3) and the outlet tube (4) away from the transfer tube (1). A piston assembly is installed on the transfer tube (1). A filter (7) is installed inside the inlet tube (3), and a filter membrane (8) is installed inside the outlet tube (4). The inlet tube (3) includes a first half-tube (30) and a second half-tube (31) connected by threads. A device is installed inside the inlet tube (3) that corresponds to the... The filter (7) has a first outer tube (34) connected to the needle and a first inner tube (32) connected to the transfer tube (1). A first check valve (33) is installed on the first inner tube (32). Both ends of the filter (7) are provided with connecting sleeves (70). The two connecting sleeves (70) are threadedly connected to the first outer tube (34) and the first inner tube (32) respectively. When the first half tube (30) is turned on the second half tube (31), the first outer tube (34) is turned on the connecting sleeve (70) simultaneously.

2. The dual-channel filtering dosing syringe as described in claim 1, characterized in that: The filter membrane (8) is equipped with a second outer tube (42) that communicates with the needle tube (6) and a second inner tube (40) that communicates with the inside of the transfer tube (1) at both ends. A second check valve (41) is installed on the second inner tube (40).

3. The dual-channel filter dosing injector as described in claim 2, characterized in that: Each needle is provided with a protective sleeve (5) on the outside, and the inlet tube (3) and outlet tube (4) of the protective sleeve (5) are snapped together.

4. The dual-channel filter dosing injector as described in claim 3, characterized in that: A partition plate (10) is fixedly connected inside the transfer pipe (1), and a vent hole (11) is opened on the partition plate (10).

5. The dual-channel filter dosing injector as described in claim 4, characterized in that: The piston assembly includes a piston body (21) and a piston rod (2) fixed on the outer wall of the piston body (21). A pressure plate (20) is fixedly installed at the outer end of the piston rod (2).

6. The dual-channel filter dosing injector as described in claim 5, characterized in that: The first outer tube (34) passes through the first half tube (30) and is coaxially fixedly connected to the first half tube (30). A limiting strip (340) that passes through the first half tube (30) is integrally formed on the outer wall of the first outer tube (34).

7. The dual-channel filter dosing injector as described in claim 6, characterized in that: The second half-tube (31), the transfer tube (1), and the drug outlet tube (4) are integrally formed.

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