Anti-accidental injury dispensing system and anti-accidental injury dispensing method

Abstract

The present invention relates to the field of medical devices, and specifically discloses a drug dispensing system and a drug dispensing method for preventing accidental injuries, wherein the drug dispensing system for preventing accidental injuries comprises a blunt needle assembly and a solvent extractor assembly; the blunt needle assembly can be installed on a syringe barrel to extract liquid medicine from a curved-necked ampoule; the solvent extractor assembly comprises a bottle stopper piercer, one end of which can be inserted into a solvent bottle stopper, and the other end is connected to the syringe barrel, and is used to extract liquid medicine from the solvent bottle. The present invention provides a novel drug dispensing syringe system for reducing the risk of needlestick injuries for medical personnel, which reduces occupational exposure caused by needlestick injuries from the root by replacing the hard and sharp metal needle of the original syringe with a blunt plastic needle.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a system and method for preventing accidental injury from dispensing medicine. Background Art

[0002] In clinical practice, it is a common method to prepare liquid medicine using a syringe with a needle. The metal needles contained in the most commonly used and universal syringe models (traditional syringe barrel + metal needle + plastic needle cap) are designed for both aspiration and injection of drugs, and are sharp, hard, and easy to stab people. However, this type of syringe is very likely to cause accidental injuries to medical staff, patients, and cleaners during use and recycling, and it is easy to cause stabbing incidents. Needlestick injuries are easy to cause the spread of blood-borne infectious diseases, such as AIDS, syphilis, hepatitis B, etc., which are harmful to personnel. It is understood that needlestick injuries are the biggest risk of occupational exposure to blood-borne infections for medical workers and cleaners, accounting for about 80% of the total. In the application scenarios of special departments (such as anesthesiology, ICU, endoscopy center, etc.), most syringe needles are only used for aspiration of drugs, and almost all liquid medicines are injected into the patient's body through the already indwelling intravenous channels, except for a very small number of intramuscular injections. The drugs used in the above-mentioned special departments are mostly liquid drugs contained in recurved ampoules, and a few are powdered drugs contained in powder ampoules.

[0003] At present, most designs for preventing accidental injuries to syringes are to add various outer protective shells (caps), or adopt a retractable needle design. When the medication is dispensed, the needle is retracted to reduce the risk of puncture. However, these solutions are often complex in structure, high in cost, and ineffective. At the same time, the waste disposal cost is also high. Summary of the invention

[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide a medication dispensing system which is highly safe, simple and reliable in structure, low in cost, convenient to use, and environmentally friendly and can significantly reduce the risk of needlestick injuries to medical personnel.

[0005] The technical solution adopted by the present invention is a drug dispensing system to prevent accidental injury, comprising a blunt needle assembly and a solvent extractor assembly; the blunt needle assembly can be installed on the syringe barrel to extract the medicine liquid in the curved neck ampoule; the solvent extractor assembly comprises a bottle stopper piercer, the bottle stopper piercer can be inserted into the solvent bottle stopper at one end and connected to the syringe barrel at the other end for extracting the medicine liquid inserted into the solvent bottle.

[0006] In the present invention, when extracting liquid medicine from a curved-necked ampoule, a blunt needle assembly is used in conjunction with a syringe barrel to extract the liquid medicine from the curved-necked ampoule; when extracting liquid from an infusion bottle, a solvent extractor assembly can be used, by inserting one end of the bottle stopper piercer into the solvent bottle stopper, and connecting the other end to the syringe barrel, to extract the liquid medicine from the bottle through the syringe barrel. In this way, the hard, sharp metal needle of the original syringe is replaced with a blunt needle or a solvent extractor, reducing the use of sharp metal needles and reducing occupational exposure caused by needlestick injuries from the root.

[0007] The present invention provides a new type of dispensing syringe system for reducing the risk of needlestick injuries for medical staff. By replacing the hard and sharp metal needle of the original syringe with a blunt plastic needle, occupational exposure caused by needlestick injuries is reduced from the root. The solvent extractor is more convenient to use, saves time and effort when a large amount of liquid medicine needs to be prepared.

[0008] As a preferred technical solution, the blunt needle assembly includes a blunt needle and a protective sleeve matching the blunt needle, and the blunt needle includes a needle tube and a needle seat; the top end of the needle tube is a plane, and the angle between the plane and the axis of the needle tube is 70°~90°. The blunt needle adopted in this solution has a non-sharp needle tip design, which is equivalent to cutting off the tip of the existing needle, and the cutting angle is 70~90° with the axis of the needle tube. In practical applications, it is preferred that the cutting angle is perpendicular to the axis of the needle tube, that is, the angle between the top plane of the needle tube and the axis of the needle tube is 90°. This design has a simple structure and can effectively avoid stabbing injuries to medical staff during use.

[0009] As a preferred technical solution, the cross section of the tip of the blunt needle is approximately trapezoidal. This solution plane-processes the tip of the needle tube while retaining a portion of the beveled surface. When viewed from the side of the needle tube, the cross section of the tip is approximately trapezoidal. This design can avoid needlestick injuries and allow medical staff to conveniently extract liquid medicine.

[0010] As a preferred technical solution, the needle tube is made of metal, plastic or inorganic material. In the present invention, the key point of the needle tube is bluntness, not limited to materials or materials, including metal. In practical applications, the preferred material of the needle tube is plastic. The use of plastic needle tubes can significantly reduce the manufacturing and application costs, and reduce the use of metal materials, which is relatively more environmentally friendly.

[0011] As a preferred technical solution, the bottle stopper piercer includes a puncture needle, a connecting tube and a liquid extraction port; one end of the connecting tube is connected to the puncture needle, and the other end of the connecting tube is connected to the liquid extraction port. Among them, the solvent extractor is equipped with a freely selectable large-caliber needle (metal or plastic needle) as the puncture needle, which makes it easier to prepare the liquid medicine and generates fewer bubbles. In addition, the liquid extraction port is also equipped with a liquid extraction port protective cap.

[0012] As a preferred technical solution, the solvent extractor assembly further includes a liquid stopper provided on the connecting pipe. By installing the liquid stopper on the connecting pipe, the solution can realize liquid extraction or stop extraction at any time, thereby improving the convenience of use.

[0013] As a preferred technical solution, it also includes a syringe barrel and a standard syringe needle assembly that matches the syringe barrel; the blunt needle can be installed on the syringe barrel.

[0014] A method for preventing accidental injury from dispensing medicines, which uses a blunt needle assembly and a solvent extractor assembly to replace the use scenario of a standard syringe needle, wherein the replacement use scenario is the situation of extracting liquid medicine.

[0015] As a preferred technical solution, the method for preventing accidental injury from dispensing medicine comprises: when the ampoule containing the medicine is a curved-necked ampoule, the blunt needle assembly is installed on the syringe barrel, and the medicine in the curved-necked ampoule is extracted using the blunt needle.

[0016] As a preferred technical solution, the method for preventing accidental injury from dispensing medicine also includes: when extracting liquid from an infusion bottle, using a solvent extractor assembly; the solvent extractor assembly includes a bottle stopper piercer, and the bottle stopper piercer includes a puncture needle that is connected once, a connecting tube, and a liquid extraction port; by inserting the puncture needle into the solvent bottle stopper, the liquid extraction port is connected to the syringe barrel, and the Chinese medicine liquid in the bottle is extracted through the syringe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Use blunt syringe needles and solvent extractors to replace existing metal syringe needles with sharp needle tips, which can meet most of the dispensing needs while greatly reducing the occupational exposure risk caused by needlestick injuries.

[0019] 2. At the same time, plastic syringe needles are cheaper to produce and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the blunt needle assembly in an embodiment of the present invention.

[0021] Figure 2 It is a cross-sectional view and a partially enlarged view of the blunt needle assembly in an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the structure of the solvent extractor assembly in an embodiment of the present invention.

[0023] Figure 4 Schematic diagram of the structure of the syringe barrel in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of scheme 1 in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of scheme 2 in an embodiment of the present invention.

[0026] Description of the drawings: 1. Plastic syringe needle kit; 2. Solvent extractor kit; 3. Syringe barrel and plastic syringe needle kit; 4. Standard metal syringe needle kit; 5. Plastic syringe needle; 6. Plastic syringe needle protective cover; 7. Inner diameter of plastic syringe needle protective cover; 8. Syringe barrel; 9. Cone; 10. Cone cavity; 11. Needle tube of plastic syringe needle; 12. Needle tip of plastic syringe needle tube; 13. Needle seat of plastic syringe needle; 14. Outer diameter of plastic syringe needle tube; 15. Outer diameter of needle seat of plastic syringe needle; 16. Bottle stopper; 17. Bottle stopper protective cover; 18. Liquid stopper; 19. Liquid extraction port; 20. Liquid extraction port protective cap. DETAILED DESCRIPTION

[0027] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Example

[0028] like Figures 1 to 3 As shown, this embodiment provides a drug dispensing system to prevent accidental injury, including a blunt needle assembly 1 and a solvent extractor assembly 2.

[0029] In this embodiment, the blunt needle assembly 1 includes a separately packaged plastic syringe needle and its components (such as Figure 1 As shown), it includes: a plastic syringe needle 5 and a plastic syringe needle protective cover 6. The inner diameter 7 of the plastic syringe needle protective cover should be smaller than the inner diameter of the standard metal syringe needle protective cover to avoid mixing the two. The inner diameter 7 of the plastic syringe needle should match the inner diameter 8 of the plastic syringe needle protective cover to ensure stable connection and convenient use. In this embodiment, a plastic injection needle is used. In actual applications, the material of the blunt needle is not limited to plastic. Metal or other materials that can achieve similar effects can also be used here.

[0030] The connection between the plastic syringe needle 5 and the syringe barrel is based on the national standard GB / T 1962.1-2015 for syringes and injection needles. The inner diameter of the plastic syringe needle 5 and the wall thickness of the needle tube 11 are adjusted according to the specific situation. Generally, the inner diameter of the plastic syringe needle 5 is not used for direct injection and is not subject to the restrictions of the national standard GB / T 1962.1-2015. Any package containing the plastic syringe needle 5 must be marked with the words "the plastic needle contained is not for direct injection".

[0031] like Figure 2 As shown, the plastic syringe needle 5 includes a needle tube 11 and a needle seat 13. The inner diameter of the needle seat 13, also known as the inner cone joint, should match the cone head 10 of the syringe barrel. Its materials and other parameters refer to the national standard GBT 1962.1-2015 document. The outer diameter 15 of the needle seat of the plastic syringe needle should match the inner diameter 7 of the plastic syringe needle protective cover. The outer diameter 14 of the needle tube should be smaller than the inner diameter 10 of the cone head cavity of the syringe barrel to ensure that the needle tube 12 can freely enter and exit the cone head 9, which is convenient for dispensing after dispensing.

[0032] The material of the needle tube 11 is generally plastic, and the hardness can be adjusted according to the actual situation. The principle is to ensure that it is convenient to extract the liquid medicine and prevent stabbing the human body. The needle tip 12 of the needle tube 11 is different from the traditional injection needle. The cross section is similar to a trapezoid, and the tip is a plane. The inclination angle is adjusted according to the actual situation. In actual application, the tip of the needle tip 12 is 70-90° with the axis of the needle tube.

[0033] The outer diameter 15 of the needle seat of the plastic syringe needle should be smaller than the outer diameter of the needle seat of the standard metal syringe needle 4 to ensure that the plastic syringe needle protective cover 6 and the protective cover of the standard metal syringe needle 4 cannot be mixed.

[0034] like Figure 3 As shown, the solvent extractor assembly 2 is used to extract the solvent in the infusion bottle, and includes a bottle stopper piercer 16, a bottle stopper piercer protective cover 17, a liquid stopper 18, a liquid extraction port 19, and a liquid extraction port protective cap 20, wherein the bottle stopper piercer 16 and the bottle stopper piercer protective cover 17 refer to the national standard for infusion sets GB 8368-2018, wherein the inner diameter of the liquid extraction port 19 should be consistent with the outer diameter of the cone head 9.

[0035] The syringe barrel and plastic syringe needle and its components 3 include (such as Figure 4 The syringe barrel 8 is designed in accordance with the traditional disposable syringe barrel, and is in accordance with the national standard for syringes GB 15810-2019. The syringe barrel 8 includes a cone head 9, and the diameter 10 of the internal liquid cavity of the cone head 9 and other parameters are in accordance with the national standard for syringes GB 15810-2019.

[0036] The standard metal syringe needle assembly 4 is a standard syringe needle. The various parameters refer to the national standard document on syringes and injection needles GB / T 1962.1-2015. The standard metal syringe needle protective cover should be made of transparent plastic material and marked with warning colors (red, yellow, etc.) to warn that this is a metal needle and there is a risk of puncture, so it should be discarded in a designated location.

[0037] This embodiment can be used in two ways, which can be directly described as follows:

[0038] Option 1: If Figure 5 As shown, the anti-accidental injury dispensing system includes a blunt needle assembly 1, a solvent extractor and its assembly 2. Among them, the blunt needle assembly 1 includes a plastic syringe needle and its assembly, the assembly of the plastic syringe needle is a plastic syringe needle protective cover, and the plastic syringe needle and the plastic syringe needle protective cover are used as a packaging unit in a 1:1 ratio; the solvent extractor and its assembly 2 are used as a packaging unit. In actual clinical use, Scheme 1 needs to be used in conjunction with a standard syringe. A standard syringe generally refers to a packaging unit consisting of a syringe barrel and a metal syringe needle that meets national standards.

[0039] During clinical use, open the solvent extractor and its components 2, remove the bottle stopper piercer protective cover 17, and pierce the bottle stopper piercer 16 into the rubber stopper of the solvent bottle; close the liquid stopper 18 for standby use; when the ampoule containing the medicine is a curved neck ampoule, open the standard syringe packaging unit, select its syringe barrel, discard its standard metal syringe needle and its protective cover at a designated location, open the liquid extraction port protective cap 20, insert the cone head 9 of the syringe barrel into the liquid extraction port 19, extract an appropriate amount of solvent, and clamp the liquid stopper 18; open the plastic syringe needle and its components 1, connect the above-mentioned syringe barrel with the solvent extracted to the needle seat of the plastic syringe needle 5, remove the plastic syringe needle protective cover 6, and extend the needle tip 12 of the plastic syringe needle into the curved neck ampoule to extract the medicine solution, and the medicine dispensing is completed. When the ampoule containing the drug is a powder ampoule, the solvent extraction process is the same as described above, and the drug dispensing method is the same as the traditional method, that is, the metal needle of a standard syringe is used to pierce the powder ampoule to dilute and extract the drug solution.

[0040] Option 2: If Figure 6 As shown, the anti-accidental injury dispensing system comprises a solvent extractor assembly 2, a syringe barrel combined with a plastic syringe needle assembly 3, a standard metal syringe needle 4 and its assembly. The solvent extractor assembly 2 is used as a packaging unit, the syringe barrel combined with the plastic syringe needle and its assembly 3 is used as a packaging unit in a ratio of 1:1:1, and the standard metal syringe needle and its assembly 4 is used as a packaging unit in a ratio of 1:1.

[0041] In actual clinical use, when extracting liquid from an infusion bottle, a solvent extractor and its component 2 are used. The steps for using the solvent extractor are the same as those in Option 1. When the ampoule containing the drug is a curved-necked ampoule, open the packaging of the syringe barrel combined with the plastic syringe needle and its component 3, take the syringe barrel 8, connect the cone head 9 to the liquid extraction port 19 to extract the solvent, and clamp the liquid stopper 18; connect the cone head 9 of the syringe barrel 8 to the needle seat 13 of the plastic syringe needle 5; insert the needle tip 12 of the plastic syringe needle tube into the curved-necked ampoule to extract the drug solution, and the configuration is complete. When the ampoule containing the drug is a powder ampoule, the solvent extraction process is the same as the process in the above-mentioned scheme 2; open the packaging unit of the standard metal syringe needle and its component 4, and connect the cone head 9 of the syringe barrel 8 from which the solvent has been extracted with the needle seat of the standard metal syringe needle 4; remove the protective cover of the standard metal syringe needle 4, and insert the needle tip of the standard metal syringe needle 4 into the powder ampoule to dilute and extract the drug solution, and the preparation is completed; discard the standard metal syringe needle 4 at a designated location, and connect the syringe barrel 8 from which the drug has been prepared with the plastic syringe needle 5.

[0042] The anti-accidental-injury dispensing system provided in this embodiment needs to be used in conjunction with a syringe, so it can also be called an anti-accidental-injury dispensing syringe system or an anti-accidental-injury dispensing injection needle system. In practical applications, the blunt needle assembly and the solvent extractor assembly can be packaged separately and then used in conjunction with a standard syringe in actual use, such as the above-mentioned scheme one. However, it is more preferred to adopt scheme two, which makes it more convenient for medical staff to use by reasonably configuring the packaging, ensures aseptic operation during the dispensing process, and avoids waste of sharp metal needles, and is suitable for more dispensing scenarios.

[0043] Both of the above solutions can meet most of the dispensing needs through the use of blunt needle assemblies and solvent extractor assemblies, and minimize the use of sharp metal needles in the dispensing process (except for powder ampoule dispensing). This greatly reduces the risk of needlestick injuries to medical staff during the dispensing process and provides protection for the safety of medical staff.

[0044] Plastic is the preferred material for the syringe material in the present invention, but does not exclude any other materials, including metal. Any needle with a structure similar to the plastic syringe needle in the present invention, regardless of any material, belongs to the scope of the present invention. The tip of the needle with a structure similar to that of the needle tip is non-sharp, and the sharp form includes but is not limited to the side hole type needle tip and the bevel (and double bevel) type needle tip. Improvements to any parameters of any part of the medical blunt syringe needle (including inner diameter, outer diameter, wall thickness, angle and length of the needle tip half bevel, needle tube length, etc.) belong to the scope of the present invention. Any improvements to the solvent extractor and its components belong to the scope of the present invention.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A drug dispensing system to prevent accidental injury, characterized in that: It comprises a blunt needle assembly and a solvent extractor assembly; the blunt needle assembly can be mounted on a syringe barrel to extract liquid medicine from a curved-necked ampoule; the solvent extractor assembly comprises a bottle stopper piercer, one end of which can be inserted into a solvent bottle stopper and the other end is connected to the syringe barrel to extract liquid medicine from the solvent bottle; the system also comprises a syringe barrel and a standard syringe needle assembly matched with the syringe barrel; the blunt needle can be mounted on the syringe barrel; The blunt needle assembly comprises a blunt needle and a protective sleeve matched with the blunt needle, and the blunt needle comprises a needle tube and a needle seat; the top end of the needle tube is a plane, and the angle between the plane and the axis of the needle tube is 70° to 90°; The bottle stopper piercer comprises a puncture needle, a connecting tube and a liquid extraction port; one end of the connecting tube is connected to the puncture needle, and the other end of the connecting tube is connected to the liquid extraction port; The solvent extractor assembly further includes a liquid stopper disposed on the connecting pipe; When the anti-accidental injury dispensing system includes a blunt needle assembly, a solvent extractor and its assembly, wherein the blunt needle assembly includes a plastic syringe needle and its assembly, the assembly of the plastic syringe needle is a plastic syringe needle protective cover, and the plastic syringe needle and the plastic syringe needle protective cover are a packaging unit in a 1:1 ratio; the solvent extractor and its assembly are a packaging unit; during clinical use, it needs to be used in conjunction with a standard syringe, and the standard syringe is a packaging unit consisting of a syringe barrel and a metal syringe needle; During clinical use, the solvent extractor and its components are opened, the protective cover of the bottle stopper piercer is removed, and the bottle stopper piercer is inserted into the rubber stopper of the solvent bottle; the liquid stopper is closed for standby use; when the ampoule containing the drug is a curved-necked ampoule, the standard syringe packaging unit is opened, the syringe barrel is selected, the standard metal syringe needle and its protective cover are discarded at a designated location, the liquid extraction port protective cap is opened, the cone head of the syringe barrel is inserted into the liquid extraction port, an appropriate amount of solvent is extracted, and the liquid stopper is clamped; the plastic syringe needle and its components are opened, the syringe barrel from which the solvent has been extracted is connected to the needle seat of the plastic syringe needle, the protective cover of the plastic syringe needle is removed, and the needle tip of the plastic syringe needle is inserted into the curved-necked ampoule to extract the drug solution, and the drug dispensing is completed; when the ampoule containing the drug is a powder ampoule, the solvent extraction process is the same as that of the curved-necked ampoule, and the drug dispensing method is to use the metal needle of the standard syringe to pierce the powder ampoule to dilute and extract the drug solution; When the anti-accidental injury dispensing system includes a solvent extractor assembly, a syringe barrel combined with a blunt needle assembly, a standard metal syringe needle and its assembly, wherein the solvent extractor assembly is taken as a packaging unit, the blunt needle assembly includes a plastic syringe needle and its assembly, the assembly of the plastic syringe needle is a plastic syringe needle protective cover, the syringe barrel combined with the plastic syringe needle and its assembly is taken as a packaging unit in a ratio of 1:1:1, and the standard metal syringe needle and its assembly is taken as a packaging unit in a ratio of 1:1; During clinical use, when extracting liquid from an infusion bottle, use the solvent extractor and its components. When the ampoule containing the drug is a curved-necked ampoule, open the package of the syringe barrel combined with the plastic syringe needle and its components, take the syringe barrel, connect the cone head with the liquid extraction port to extract the solvent, and clamp the liquid stopper; connect the cone head of the syringe barrel with the needle seat of the plastic syringe needle; insert the needle tip of the plastic syringe needle into the curved-necked ampoule to extract the drug solution, and the configuration is completed; when the ampoule containing the drug is a curved-necked ampoule, For powder ampoules, the solvent extraction process is the same as that for curved-necked ampoules; open the standard metal syringe needle and its component packaging unit, connect the cone head of the syringe barrel from which the solvent has been extracted with the needle seat of the standard metal syringe needle; remove the protective cover of the standard metal syringe needle, and insert the needle tip of the standard metal syringe needle into the powder ampoule to dilute and extract the drug solution, and the dispensing is completed; discard the standard metal syringe needle at a designated location, and connect the syringe barrel from which the drug has been dispensed with the plastic syringe needle.

2. The anti-accidental-injury dispensing system according to claim 1, characterized in that: The cross section of the tip of the blunt needle is approximately in a trapezoidal shape.

3. The anti-accidental-injury dispensing system according to claim 2, characterized in that: The needle tube is made of metal, plastic or inorganic material.

4. A method for preventing accidental injury from dispensing medicine, characterized in that: The anti-accidental injury dispensing system according to any one of claims 1 to 3 is used, and a blunt needle assembly and a solvent extractor are used to replace the use scenario of a standard syringe needle, wherein the replacement use scenario is the situation of extracting liquid medicine.

5. The method for preventing accidental injury from dispensing medicine according to claim 4, characterized in that: The method for preventing accidental injury from dispensing medicine comprises: when the ampoule containing the medicine is a curved-necked ampoule, the blunt needle assembly is installed on the syringe barrel, and the medicine in the curved-necked ampoule is extracted with the blunt needle.

6. The method for preventing accidental injury from dispensing medicine according to claim 4, characterized in that: The method for preventing accidental injury from dispensing medicine also includes: when extracting liquid from an infusion bottle, a solvent extractor assembly is used; the solvent extractor assembly includes a bottle stopper piercer, and the bottle stopper piercer includes a puncture needle that is connected once, a connecting tube, and a liquid extraction port; by inserting the puncture needle into the solvent bottle stopper, the liquid extraction port is connected to the syringe barrel, and the liquid in the bottle is extracted through the syringe barrel.

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