CN110237358A - A high-precision insulin syringe and its application - Google Patents

Abstract

The invention discloses a high-precision insulin injector and its application, and relates to the technical field of medical devices. The key points of the technical scheme are as follows: an injection needle and an injection barrel are provided, and the injection barrel is provided with a scale line indicating the dose of the drug; the scale line includes a long Metering line, short metering line and longitudinal metering connection line, the distance between two adjacent short metering lines is 1 international unit drug dose, and the distance between two adjacent long metering lines is 5 international unit drug dose; injection needle The outer wall of the cylinder is sleeved with a pressurized injection cylinder; the pressurized injection cylinder is equipped with an injection push rod; the injection push rod sleeve is provided with a pressurized thread; the end of the injection push rod is provided with a rubber sealing piston; the injection push rod is located in the pressurized injection cylinder The outer end is provided with a rotary pressurizing handle; the end of the pressurized injection cylinder is provided with a rotating wedge-shaped ruler flexibly connected with the outer wall of the injection syringe. The international unit dose of the drawn insulin injection can be directly read out; at the same time, the insulin injection of a smaller international unit dose can also be accurately drawn.

Description

A high-precision insulin syringe and its application

technical field

The invention relates to the technical field of medical instruments, more specifically, it relates to a high-precision insulin syringe and its application.

Background technique

Diabetes is the most common disease in endocrinology. With the continuous improvement of people's living standards, the incidence of diabetes is on the rise. According to statistics, there are currently nearly 40 million diabetic patients in my country. Studies have shown that early insulin injection therapy is beneficial to protect the function of islet β cells and prevent complications. Therefore, the most important means of treating diabetes is insulin injection. Intensive treatment through insulin injection can make the patient's blood sugar, blood lipid, blood pressure and BMI fully reach the standard. At the same time, insulin injection to control blood sugar not only has a stable effect, but also does not cause damage to liver and kidney organs. Therefore, more and more diabetic patients use insulin in recent years. Currently, Novolin biosynthetic insulin injections used in hospitals are usually equipped with dedicated insulin pen injectors. Insulin syringe is a common medical device, which is mainly used to inject insulin drug into the patient's body to obtain the corresponding therapeutic effect.

At present, insulin syringes on the market are divided into one-milliliter sterile syringe empty needles and insulin pen-type syringes matched with insulin injections. One milliliter sterile syringe is a traditional form of drug administration with negative pressure inhalation and pressure; the insulin pen-type injector matched with insulin injection is used for insulin injection through a refill and an injection pen with insulin pen-type injector.

In the prior art, when an insulin pen-type injector is used, one person, one pen and one refill are required to be used with the insulin pen, but after the operation period, patients do not need insulin to control blood sugar, and the insulin pen-type injector and its refill are scrapped, for Unnecessary economic burden on the patient; if the same refill is used by multiple patients, the risk of cross-infection will increase; the use of a one-milliliter syringe is to make the volume of the liquid in milliliters, and each time the regular insulin is drawn according to the patient’s The blood sugar situation doctor ordered to convert the insulin unit for aspiration. Due to the replacement of ordinary insulin, the unit dosage conversion is complicated. The empty needle in milliliters is no longer suitable for the accurate dosage of ordinary insulin. If you are not careful, the dose will be reduced Misunderstood, which easily lead to medical accidents, brought a certain amount of pressure to the clinical nurses.

Contents of the invention

The object of the present invention is to provide a high-precision insulin syringe and its application, which can directly read the international unit dose of the insulin injection that is drawn, so as to avoid the difference between the volume of the injection and the international unit dose of the insulin injection that is drawn by a common syringe. The complex conversion process; at the same time, it can also accurately draw insulin injections with small international unit doses.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a high-precision insulin injector, including an injection needle and an injection syringe connected with the injection needle, and the injection syringe is provided with a graduation mark indicating the dose of the drug; The scale line includes a plurality of long metering lines with the same spacing, a plurality of short metering lines with the same spacing and longitudinal metering connection lines, the short metering lines are located between the long metering lines, and the short metering lines connect two adjacent long metering lines The distance between the metering lines is equally divided into 5 small grids; the distance between the two adjacent short metering lines is the drug dose of 1 international unit, and the volume of the drug dose of 1 international unit is 0.01ml; The distance between two adjacent long metering lines is the drug dose of 5 international units; the range value of the drug dose indicated by the scale line is 5 to 50 international units; the outer wall of the injection syringe is sleeved with a pressurized injection cylinder; the pressurized injection cylinder is provided with an injection push rod; the outer wall of the injection push rod is provided with a pressurized thread; the end of the injection push rod located in the pressurized injection cylinder is provided with a rubber sealing piston; The end of the injection push rod located outside the pressurized injection cylinder is provided with a rotating pressure handle; the end of the pressurized injection cylinder close to the injection syringe is provided with a rotating wedge-shaped ruler that is movably connected with the outer wall of the injection syringe. The ruler and the pressurized injection cylinder are integrally formed.

By adopting the above technical scheme, when injecting insulin for the patient, according to the injection dose of insulin injection ordered by the clinician, by rotating the pressurized handle, the injection push rod is driven to rotate and move in the pressurized injection cylinder and the injection syringe , so as to draw the insulin injection into the injection syringe; at the same time, according to the scale line, the international unit dose of the insulin injection that needs to be drawn can be directly read, so that the process of converting the volume of the insulin injection into the international unit dose can be avoided Insulin injection dose is inaccurate due to errors in the process; by rotating the wedge-shaped ruler, the liquid volume of 0.05ml between adjacent long metering lines can be subdivided into 50 equal parts, when it is necessary to draw less than 5 unit doses of insulin When injecting liquid, rotate the scale of the rotating wedge-shaped scale to coincide with the short metering line on the injection syringe, so as to facilitate the accurate drawing of insulin injections less than 5 unit doses, that is: the volume of drawn insulin injection = rotating wedge The scale value of the scale × 0.001; after drawing the accurate dose of insulin injection into the injection syringe, insert the injection needle into the subcutaneous tissue of the patient, and drive the injection push rod and the rubber sealing piston in the injection syringe by rotating the rotary pressure handle. The insulin injection in the injection syringe can be injected into the patient's body; through the scale line on the injection syringe and the rotating wedge-shaped scale, the international unit dose of the drawn insulin injection can be read directly, thus avoiding the use of Insulin injections drawn by ordinary syringes require a complex conversion process between the volume of the injection and the dose of the international unit; at the same time, it is also possible to accurately draw insulin injections with a smaller dose of the international unit.

The present invention is further configured as follows: the outer wall of the injection syringe is provided with a numerical value in international units corresponding to the long metering line representing the dose of the drug.

By adopting the above technical solution, the unit dose of the insulin injection in the injection syringe can be directly read out through the value of the international unit.

The present invention is further configured as follows: the outer wall of the injection syringe is provided with a volume reading corresponding to the long metering line indicating the volume of the drug.

By adopting the above technical solution, the volume of the insulin injection in the injection syringe can be easily read through the volume reading value.

The present invention is further set as follows: the length of the injection needles is 12.5mm; the diameter of the pair of injection needles is 0.3mm.

By adopting the above technical scheme, when injecting insulin for patients, the injection needle with a length of 12.5mm and a diameter of 0.3mm can be used to reduce the stress area of the patient’s punctured tissue and increase the injection pressure, thereby reducing the patient’s pain. .

The present invention is further set as follows: the side wall of the injection needle is provided with a needle protection sleeve which is slidingly connected with the injection needle; the side wall of the injection needle is provided with a safety distance mark; the distance between the safety distance mark and the needle tip of the injection needle is 5 mm .

By adopting the above-mentioned technical scheme, when injecting insulin subcutaneously for a patient, the needle protective cover is slid to the safe distance mark, so as to facilitate maintaining the safe injection distance when injecting insulin subcutaneously for the patient; at the same time, when the insulin injection needs to be When it is added into the liquid bag for use, slide the needle protection cover to the bottom of the injection needle, so that the injection needle is exposed to a sufficient length and the dosage of the insulin injection added into the liquid bag is more accurate.

The present invention is further provided that: the outer wall of the injection syringe is covered with a transparent rotating fixture.

By adopting the above technical solution, when the rotary pressure handle is rotated, the rotation-stop fixing of the pressure injection cylinder is facilitated by rotating the fixing member.

The present invention is further configured as follows: the tail end of the injection needle is fixedly connected with a hollow fixing seat; the fixing seat is threadedly connected with the liquid outlet end of the injection syringe.

By adopting the above technical scheme, the fixing seat facilitates the fixing of the injection needle; the threaded connection between the fixing seat and the liquid outlet end of the injection syringe facilitates the stable connection between the injection needle and the injection syringe.

The present invention is further provided that: the syringe is used in the fields of injection of biosynthetic human insulin injection and clinical medicine.

By adopting the above-mentioned technical scheme, applying the syringe to the injection of biosynthetic human insulin injection can reduce the high cost of using the pen-type syringe matched with the insulin injection; at the same time, by using the syringe for insulin injection, it is possible to avoid the use of Insulin injections drawn by ordinary syringes require a complex conversion process between the volume of the injection and the dose of the international unit; at the same time, it is also possible to accurately draw insulin injections with a smaller dose of the international unit.

In summary, the present invention has the following beneficial effects: by rotating the pressurized handle, the injection push rod is driven to rotate and move in the pressurized injection cylinder and the injection syringe, thereby sucking the insulin injection into the injection syringe; at the same time , according to the scale line, the international unit dose of the insulin injection that needs to be drawn can be directly read, so as to avoid errors in the process of converting the volume of the insulin injection into the international unit dose, resulting in inaccurate doses of the drawn insulin injection; through The rotating wedge-shaped ruler can subdivide the liquid volume of 0.05ml between adjacent long metering lines into 50 equal parts. When it is necessary to draw insulin injections below 5 unit doses, rotate the scale of the rotating wedge-shaped ruler to match the injection volume. The short metering lines on the syringe are coincident, so that it is convenient to accurately draw the insulin injection of less than 5 unit doses, that is: the volume of the drawn insulin injection = the scale value of the rotating wedge scale × 0.001; when the accurate dose of insulin is drawn After the injection liquid enters the injection barrel, the injection needle is inserted into the subcutaneous tissue of the patient, and the injection push rod and the rubber sealing piston are driven to move in the injection barrel by rotating the rotary pressure handle, so that the insulin injection liquid in the injection barrel Injected into the patient's body; through the scale line on the injection syringe and the rotating wedge-shaped scale, the international unit dose of the drawn insulin injection can be read directly, thus avoiding the need to compare the volume of the injection with the international unit for drawing insulin injection with a common syringe The process of complex conversion between doses; at the same time, it can also accurately draw insulin injections with small international unit doses.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1. Injection needle; 2. Injection syringe; 3. Graduation line; 4. Long metering line; 5. Short metering line; 6. Longitudinal metering connection line; 7. Pressurized injection cylinder; 8. Injection push rod ;9. Pressurized thread; 10. Rubber sealing piston; 11. Rotating pressure handle; 12. Rotating wedge-shaped scale; 13. International unit value; 14. Volume reading value; 15. Needle protective cover; 17. Rotating fixture; 18. Fixing seat.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawing 1 .

Embodiment: A high-precision insulin injector, as shown in Figure 1, includes an injection needle 1 and an injection syringe 2 connected to the injection needle 1, and the injection syringe 2 is engraved with a scale line 3 indicating the dose of the drug. The scale line 3 includes a plurality of long measurement lines 4 with the same spacing, a plurality of short measurement lines 5 with the same spacing and a longitudinal measurement connection line. The short measurement lines 5 are located between the long measurement lines 4, and the short measurement lines 5 will be adjacent to each other. The distance between the long metering lines 4 is equally divided into 5 small grids. The distance between two adjacent short metering lines 5 is 1 international unit of drug dose, and the volume of 1 international unit of drug dose is 0.01ml. The distance between two adjacent long metering lines 4 is 5 international units of drug dosage. The range value of the drug dosage represented by the scale line 3 is 5-50 international units. The outer wall of the injection syringe 2 is movably sleeved with a pressurized injection cylinder 7 . An injection push rod 8 is installed in the pressurized injection cylinder 7 . The outer wall of the injection push rod 8 is sleeved with a pressurizing thread 9 . The end of the injection push rod 8 located in the pressurized injection cylinder 7 is fixedly connected with a rubber sealing piston 10 which can be slidably connected with the inner wall of the injection cylinder 2 . The end of the injection push rod 8 outside the pressurized injection cylinder 7 is fixedly connected with a rotary pressurized handle 11 . The end of the pressurized injection cylinder 7 close to the injection cylinder 2 is connected with a rotating wedge-shaped scale 12 movably connected with the outer wall of the injection syringe 2 , and the rotating wedge-shaped scale 12 is integrally formed with the pressurized injection cylinder 7 .

In this embodiment, the insulin pen-type injector is a 0.5ml injector. The reading principle of the syringe is as follows: the rotating wedge-shaped ruler 12 is pushed forward along the outer wall of the injection cylinder 2, and the rotating pressure handle 11 rotates one revolution, and advances 0.05ml on the scale line 3 of the injection cylinder 2, which is 5 pieces. International Unit Dose Insulin Injection. Utilizing the principle of the spiral micrometer, it is equivalent to further dividing the scale of 0.05ml into 50 parts. The accuracy is 0.001ml. When drawing an insulin injection with a dose of less than 5 international units, the volume reading = the scale value of the rotary wedge-shaped scale 12 × 0.001 (ml), and then simply convert the volume reading and the dose of the international unit to obtain the international unit dose. The conversion formula is: 0.01ml = 1 international unit dose. The injection syringe 2 and the pressurized injection cylinder 7 are transparent aseptic plastic materials. The pressurized syringe 7 is rotatably and sealedly connected with the outer wall of the syringe 2 . When injecting insulin for the patient, according to the injection dose of insulin injection ordered by the clinician, by rotating the pressurized handle 11, the injection push rod 8 is driven to rotate and move in the pressurized injection cylinder 7 and the injection syringe 2, thereby Draw the insulin injection into the injection syringe 2. At the same time, according to the scale line 3, the international unit dose of the insulin injection that needs to be absorbed can be directly read, so as to avoid errors in the process of converting the volume of the insulin injection into the international unit dose, resulting in inaccurate insulin injection doses . Utilizing the principle of the spiral micrometer, by rotating the wedge-shaped ruler 12, the liquid volume of 0.05ml between the adjacent long metering lines 4 can be subdivided into 50 equal parts. Rotate the scale of the rotating wedge-shaped scale 12 to coincide with the short metering line 5 on the injection syringe 2, so as to facilitate the accurate drawing of insulin injections less than 5 unit doses, that is: the volume of drawn insulin injection = rotating wedge-shaped scale The scale value of 12 × 0.001. After drawing the accurate dose of insulin injection into the injection syringe 2, insert the injection needle 1 into the subcutaneous tissue of the patient, and drive the injection push rod 8 and the rubber sealing piston 10 in the injection syringe 2 by rotating the rotating pressure handle 11 Move to inject the insulin injection solution in the injection syringe 2 into the patient's body. Through the scale line 3 on the injection syringe 2 and the rotating wedge-shaped scale 12, the international unit dose of the drawn insulin injection can be directly read, thereby avoiding the need to calculate the difference between the volume of the injection and the international unit dose of the insulin injection drawn by an ordinary syringe. The process of complex conversion between. At the same time, it can also accurately draw insulin injections of small international unit doses.

The outer wall of the injection syringe 2 is marked with an international unit value 13 corresponding to the long metering line 4 representing the dose of the drug.

In this embodiment, the value of the international unit is 13, which facilitates the direct reading of the unit dose of the insulin injection in the injection syringe 2 .

The outer wall of the injection syringe 2 is marked with a volume reading value 14 corresponding to the long metering line 4 representing the volume of the drug.

In this embodiment, the volume of the insulin injection in the injection syringe 2 can be easily read through the volume reading value 14 .

The length of the injection needle 1 is 12.5 mm. The diameter of a pair of injection needles is 0.3 mm.

In this embodiment, when injecting insulin for a patient, the injection needle 1 with a length of 12.5 mm and a diameter of 0.3 mm is used to reduce the stress area of the patient's punctured tissue and increase the injection pressure, thereby reducing the patient's pain sense.

The side wall of the injection needle 1 is sleeved with a needle protection cover 15 which is slidingly connected with the injection needle 1 . A safety distance mark 16 is marked on the side wall of the injection needle 1 . The distance between the safety distance mark 16 and the needle tip of the injection needle 1 is 5mm.

In this embodiment, when injecting insulin subcutaneously for a patient, the needle protection cover 15 is slid to the safety distance mark 16, so as to maintain the safe injection distance for injecting insulin subcutaneously for the patient. At the same time, when the insulin injection needs to be added to the liquid bag for use, the needle protection cover 15 is slid to the bottom of the injection needle 1, so that the enough length of the injection needle 1 is exposed so that the dose of the insulin injection added in the liquid bag is more accurate. precise.

A transparent rotating fixture 17 is sheathed on the outer wall of the injection syringe 2 .

In this embodiment, when the rotary pressure handle 11 is rotated, the rotation fixing member 17 facilitates the anti-rotation fixation of the pressure injection cylinder 7 .

The tail end of the injection needle 1 is fixedly connected with a hollow fixing seat 18 . The fixing seat 18 is threadedly connected with the liquid outlet end of the injection syringe 2 .

In this embodiment, the fixing seat 18 facilitates the fixing of the injection needle 1 . The threaded connection between the fixing seat 18 and the liquid outlet of the injection syringe 2 facilitates the stable connection between the injection needle 1 and the injection syringe 2 .

The syringe is used in the field of injection and clinical medicine of biosynthetic human insulin injection.

In this embodiment, the syringe is applied to the injection of biosynthetic human insulin injection, which can reduce the high cost of using the pen-type injector matched with the insulin injection. At the same time, by using the syringe to inject insulin, it is possible to avoid the complicated conversion process between the volume of the injection liquid and the dose of the international unit for drawing the insulin injection liquid with a common syringe. At the same time, it can also accurately draw insulin injections of small international unit doses.

Working principle: When injecting insulin for the patient, according to the injection dose of insulin injection ordered by the clinician, the pressurized handle 11 is rotated to drive the injection push rod 8 to rotate in the pressurized injection cylinder 7 and the injection syringe 2 Move to suck the insulin injection into the injection syringe 2. At the same time, according to the scale line 3, the international unit dose of the insulin injection that needs to be absorbed can be directly read, so as to avoid errors in the process of converting the volume of the insulin injection into the international unit dose, resulting in inaccurate insulin injection doses . By rotating the wedge-shaped scale 12, the liquid volume of 0.05ml between adjacent long metering lines 4 can be subdivided into 50 equal parts. Rotate to coincide with the short metering line 5 on the injection syringe 2, so as to facilitate accurate drawing of less than 5 unit doses of insulin injection, that is: the volume of drawn insulin injection=the scale value of the rotating wedge-shaped scale 12×0.001. After drawing the accurate dose of insulin injection into the injection syringe 2, insert the injection needle 1 into the subcutaneous tissue of the patient, and drive the injection push rod 8 and the rubber sealing piston 10 in the injection syringe 2 by rotating the rotating pressure handle 11 Move to inject the insulin injection solution in the injection syringe 2 into the patient's body. Through the scale line 3 on the injection syringe 2 and the rotating wedge-shaped scale 12, the international unit dose of the drawn insulin injection can be directly read, thereby avoiding the need to calculate the difference between the volume of the injection and the international unit dose of the insulin injection drawn by an ordinary syringe. The process of complex conversion between. At the same time, it can also accurately draw insulin injections of small international unit doses.

This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

Claims (8)

1. A high-precision insulin syringe, comprising an injection needle (1) and an injection syringe (2) connected to the injection needle (1), characterized in that: the injection syringe (2) is provided with a scale representing the dose of the drug line (3); the scale line (3) includes a plurality of long metering lines (4) with the same spacing, a plurality of short metering lines (5) with the same spacing and a longitudinal metering connection line, and the short metering lines (5) Located between the long metering lines (4), and the short metering line (5) divides the distance between two adjacent long metering lines (4) into 5 small grids; the two adjacent short metering lines (5 ) is the drug dose of 1 international unit, and the volume of the drug dose of 1 international unit is 0.01ml; the distance between the two adjacent long metering lines (4) is the drug dose of 5 international units Dosage; the range value of the drug dose represented by the scale line (3) is 5 to 50 international units; the outer wall of the injection syringe (2) is sleeved with a pressurized injection cylinder (7); the pressurized injection cylinder (7) is provided with an injection push rod (8); the outer wall of the injection push rod (8) is provided with a pressurized thread (9); the injection push rod (8) is located in the pressurized injection cylinder (7) The end is provided with a rubber sealing piston (10); the end of the injection push rod (8) located outside the pressurized injection cylinder (7) is provided with a rotary pressurized handle (11); the pressurized injection cylinder (7) A rotating wedge-shaped scale (12) movably connected to the outer wall of the injection syringe (2) is provided near the end of the injection syringe (2), and the rotating wedge-shaped scale (12) is integrally formed with the pressurized injection cylinder (7). 2. A high-precision insulin syringe according to claim 1, characterized in that: the outer wall of the injection syringe (2) is provided with an international unit value (13 ). 3. A high-precision insulin syringe according to claim 1, characterized in that: the outer wall of the injection syringe (2) is provided with a volume reading value (14 ). 4. A high-precision insulin syringe according to claim 1, characterized in that: the length of the injection needle (1) is 12.5 mm; the diameter of the pair of injection needles (1) is 0.3 mm. 5. A high-precision insulin syringe according to claim 1, characterized in that: the side wall of the injection needle (1) is covered with a needle protection cover (15) that is slidingly connected to the injection needle (1); The side wall of the injection needle (1) is provided with a distance mark; the distance between the safety distance mark (16) and the needle tip of the injection needle (1) is 5mm. 6. A high-precision insulin syringe according to claim 1, characterized in that: the outer wall of the injection syringe (2) is covered with a transparent rotating fixture (17). 7. A high-precision insulin syringe according to claim 1, characterized in that: the tail end of the injection needle (1) is fixedly connected with a hollow fixing seat (18); The liquid outlet end of the syringe (2) is threaded. 8. A high-precision insulin syringe according to claim 1, characterized in that: said syringe is used for insulin injection.