Portable insulin syringe
By designing a portable insulin syringe with an inner tube, outer tube, push rod and rotating cap, the pain and safety issues caused by traditional syringes are solved, and the convenience of fast and accurate insulin injection and replaceable cartridges is achieved.
Patent Information
- Application Number
- CN202422184981.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Traditional insulin syringes have thick needles that cause pain during frequent injections, while thin needles break easily and take a long time to operate, and are difficult to remove from the body, leading to inconvenient injections and safety issues.
A portable insulin syringe was designed, which adopts the structure of inner barrel, outer barrel, push rod, cross bar, spring and bevel tooth surface to achieve rapid injection with one hand operation. The injection volume can be precisely controlled by rotating the cap and ball. The cartridge is replaceable to improve reliability.
It achieves fast, safe and accurate insulin injection, reduces patients' pain, improves the ease and safety of syringe operation, and the cartridge is replaceable to ensure long-term use.
Smart Images
Figure CN223438947U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of syringe technology, in particular to a portable insulin syringe. BACKGROUND
[0002] Insulin is a protein hormone secreted by the islet beta cells in the pancreas in response to stimulation by endogenous or exogenous substances such as glucose, lactose, ribose, arginine, glucagon, etc. Insulin is the only hormone in the body that can lower blood sugar, and it also promotes the synthesis of glycogen, fat and protein. Exogenous insulin is mainly used to treat diabetes.
[0003] Patients with diabetes need regular insulin injections. Traditional syringes have thick needles and frequent injections, which cause great pain to patients. There are also new syringes with thin needles that can reduce patient pain and improve comfort. However, this new syringe also requires the needle to be inserted into the human body, and then the drug is delivered into the human body by pushing. The operation process takes a long time, and if it shakes, it is easy to cause the needle to break in the body, and the thin needle is difficult to remove from the body. SUMMARY
[0004] To solve the above problems, the present application discloses a portable insulin syringe, which comprises an outer cylinder, an inner cylinder slidably arranged in the inner cylinder, a cartridge arranged at the lower end of the inner cylinder, an end cap threadedly connected to the lower side wall of the inner cylinder, a first spring fixedly connected to the inside of the end cap, and the upper end of the first spring abutting against the lower end of the cartridge. That is, under the action of the first spring, the cartridge is bundled inside the inner cylinder.
[0005] The inner cylinder is provided with a push rod, and the lower end of the push rod abuts against the upper end of the cartridge. The inner cylinder is horizontally fixedly connected with a cross bar, the inside of the cross bar is provided with a first U-shaped piece fixed at one end, the lower part of the push rod is provided with a first inclined tooth surface, the push rod passes through the middle part of the cross bar, and the other end of the first U-shaped piece abuts against the first inclined tooth surface, so that the push rod can only move downward. The push rod moves downward to push the drug in the cartridge out, and the first U-shaped piece and the first inclined tooth surface are arranged to maintain the position of the push rod and ensure that the push rod is always in contact with the cartridge.
[0006] The upper part of the inner cylinder is provided with a reset sleeve, the middle part of the lower end of the reset sleeve is provided with a second U-shaped part, the upper part of the push rod is provided with a second bevel, the cooperation mode of the second U-shaped part and the second bevel is same as that of the first U-shaped part and the first bevel, the inner wall of the upper part of the inner cylinder is fixedly connected with a convex ring, the upper end of the convex ring is provided with a second spring, and the second spring abuts against the lower end of the reset sleeve. Under the action of the second U-shaped part and the first bevel, the reset sleeve is pressed downward, the push rod is pushed to move downward, that is, the insulin is pushed out of the cartridge, and after the pressing is completed, the reset sleeve is reset under the action of the second spring.
[0007] The upper end of the outer cylinder is provided with a medicine pushing block, and the medicine pushing block is located directly above the reset sleeve. When the injector is used, the end cap abuts against the skin, the outer cylinder is pressed downward, the medicine pushing block is buckled to press the reset sleeve, and the insulin is pushed out. In the above scheme, the injection of insulin can be conveniently performed by one hand.
[0008] Preferably, the two ends of the cross rod are fixedly connected with abutting rods, the lower end of the abutting rod abuts against the upper end edge of the cartridge, the upper end of the inner cylinder is provided with a third spring, and the upper end of the third spring abuts against the upper top wall of the outer cylinder. The first spring cooperates with the abutting rod to stably accommodate the cartridge in the inner cylinder, avoids axial movement of the cartridge under the action of the first spring, and enables the medicine of the cartridge to be pressed out under the action of the push rod. Under the action of the first spring and the abutting rod, the inner cylinder and the outer cylinder have a reset effect of movement, and the third spring is a main reset component of the inner cylinder and the outer cylinder.
[0009] Preferably, the upper end of the outer cylinder is embedded and rotationally connected with a rotating cover, the middle part of the lower end of the rotating cover is fixedly connected with a screw rod, the screw rod is in threaded connection with the medicine pushing block, the side wall of the medicine pushing block is provided with an axial groove, and the groove is in cooperation with a convex strip prearranged in the inner part of the outer cylinder. When the injector is used, there is a gap between the medicine pushing block and the reset sleeve, the gap is the initial injection depth of the insulin, the size of the gap is controlled by rotating the rotating cover, the initial injection depth is adjusted, and the final injection depth is unchanged, that is, the injection amount of the insulin is adjusted by rotating the rotating cover.
[0010] Preferably, the rotating cover is radially provided with a chamber, the chamber is provided with a fourth spring and a ball, the fourth spring defines the ball, and the ball is fitted in a through hole prearranged in the upper end of the outer cylinder. The fourth spring and the ball are arranged, the rotating cover has a segmental feeling, and the injection amount of the insulin is accurately adjusted.
[0011] Preferably, the lower end of the outer cylinder is provided with a protective cap. The lower end of the outer cylinder is closed to avoid exposure of the end cap, and the protective cap is preferably in threaded connection.
[0012] Preferably, the medicine cartridge comprises a barrel, the inside of the barrel is provided with a piston, and the lower end of the push rod abuts against the piston, and the lower end of the barrel is fixedly connected with a needle head in the middle. The barrel stores insulin, and the storage capacity of the medicine cartridge can be changed by changing the diameter of the cavity where the insulin is located and the piston. Meanwhile, a through hole is arranged at the end of the end cover, and the needle head extends out of the through hole.
[0013] The beneficial effects of the present application are as follows:
[0014] 1. The device is provided with an inner barrel, an outer barrel, a push rod, a cross rod, a first spring, a second spring, a first U-shaped piece, a first inclined tooth surface, a second U-shaped piece, a second inclined tooth surface, etc., so that the needle head can be inserted and the insulin can be injected under the pressing of the outer barrel once, and the device has the advantages of simple operation, fast injection, and greatly improved safety of injection.
[0015] 2. The device is provided with a rotating cover, and a fourth spring and a ball bead are matched, so that the height of the medicine pushing block can be accurately controlled by rotating the rotating cover, and the accurate control of the injection amount of insulin is realized.
[0016] 3. The medicine cartridge in the present application can be replaced, that is, the injector can be used for a long time, and the needle head on the medicine cartridge is replaced with the replacement of the medicine cartridge, so that the reliability of injection is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a perspective view of the present application;
[0018] Figure 2 is a sectional view of the present application;
[0019] Figure 3 is Figure 2 an enlarged view of position A in FIG. 1;
[0020] Figure 4 is Figure 2 an enlarged view of position B in FIG. 1;
[0021] Figure 5 is Figure 2 an enlarged view of position C in FIG. 1;
[0022] Figure 6 is an exploded view of the present application.
[0023] LIST OF REFERENCE NUMBERS:
[0024] 1. protective cap; 2. outer barrel; 3. rotating cover; 4. end cover; 5. inner barrel; 6. first spring; 7. medicine cartridge; 8. push rod; 9. abutting rod; 10. cross rod; 11. convex ring; 12. second spring; 13. reset sleeve; 14. third spring; 15. medicine pushing block; 16. screw rod; 17. first inclined tooth surface; 18. first U-shaped piece; 19. second inclined tooth surface; 20. second U-shaped piece; 21. fourth spring; 22. ball bead. DETAILED DESCRIPTION
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.
[0026] like Figures 1 to 6 As shown, a portable insulin syringe comprises an outer tube 2, which is cylindrical. An inner tube 5 is slidingly arranged inside the outer tube 2, that is, the two can move axially relative to each other. A cartridge 7 is arranged at the lower end of the inner tube 5, and the cartridge 7 stores insulin. An end cap 4 is threadedly connected to the lower side wall of the inner tube 5. The end cap 4 can be turned to open and the cartridge 7 can be replaced. A first spring 6 is fixedly connected to the inside of the end cap 4. The upper end of the first spring 6 is against the lower end of the cartridge 7, that is, under the action of the first spring 6, the cartridge 7 is completely retracted in the inner tube 5. When the first spring 6 is compressed, the needle at the lower end of the cartridge 7 extends from a through hole preset in the middle of the end cap 4.
[0027] A push rod 8 is disposed within the inner tube 5, and the lower end of the push rod 8 abuts the upper end of the cartridge 7. That is, when the push rod 8 moves axially relative to the cartridge 7, the push rod 8 pushes out the insulin in the cartridge 7. A crossbar 10 is fixedly connected horizontally to the interior of the outer tube 2. The crossbar 19 supports and maintains the position of the push rod 8. A first U-shaped member 18 is disposed within the crossbar 10, one end of which is fixed. A first beveled tooth surface 17 is disposed at the lower portion of the push rod 8. The push rod 8 passes through the middle of the crossbar 10, and the other end of the first U-shaped member 18 abuts the first beveled tooth surface 17, allowing the push rod 8 to move only downward. When the push rod 8 moves axially, several beveled teeth on the first beveled tooth surface 17 pass over one end of the first U-shaped member 18, and the end of the first U-shaped member 18 again abuts against the horizontal surface of one beveled tooth, preventing the push rod 8 from retreating. In other words, the first U-shaped member 18 and the first beveled tooth surface 17 ensure that the end of the push rod 8 remains in contact with the cartridge 7 after each injection.
[0028] The upper portion of the inner tube 5 is provided with a reset sleeve 13, a tubular fitting sealed at both the top and bottom. A second U-shaped member 20 is provided at the middle of the lower end of the reset sleeve 13, and a second beveled tooth surface 19 is provided at the upper portion of the push rod 8. The second U-shaped member 20 and the second beveled tooth surface 19 cooperate in the same manner as the first U-shaped member 18 and the first beveled tooth surface 17. A raised ring 11 is fixedly connected to the upper inner wall of the inner tube 5. A second spring 12 is provided at the upper end of the raised ring 11, which abuts the lower end of the reset sleeve 13. Here, when the syringe is in use, the push rod 8 moves with the crossbar 10 and ejects the needle. Here, the position of the reset sleeve 13 does not change due to the action of the second spring 12.
[0029] The upper end of the outer cylinder 2 is provided with a medicine pushing block 15, which is located directly above the reset sleeve 13. As the injector continues to operate, the medicine pushing block 15 is pressed against the reset sleeve 13 and moves the push rod 8 downward under the cooperation of the second U-shaped piece 20 and the second bevel gear 19, so as to push the insulin in the medicine cartridge 7 out.
[0030] The two ends of the cross rod 10 are fixedly connected with abutting rods 9, the lower ends of which abut against the upper end edge of the medicine cartridge 7. Under the action of the first spring 6 and the abutting rod 9, the medicine cartridge 7 is stably accommodated in the inner cylinder 5. At the same time, the use of the abutting rod 9 prevents the medicine cartridge 7 from shaking and wasting the medicine liquid. The upper end of the inner cylinder 5 is provided with a third spring 14, the upper end of which abuts against the upper top wall of the outer cylinder 2. When the injector is used, the outer cylinder 2 moves downward relative to the inner cylinder 5, and the third spring 14 is used for resetting the two, which is beneficial to the next pressing use of the injector.
[0031] The upper end of the outer cylinder 2 is embedded and rotationally connected with a rotating cover 3. The lower end of the rotating cover 3 is fixedly connected with a screw rod 16, which is threadedly connected with the medicine pushing block 15. That is, the rotating cover 3 is rotated to adjust the height of the medicine pushing block 15, and further adjust the gap between the medicine pushing block 15 and the reset sleeve 13. The size of the gap can change the injection amount. The side wall of the medicine pushing block 15 is provided with an axial groove, which cooperates with the protrusions pre-provided in the inner cylinder 2 to prevent the medicine pushing block 15 from rotating with the screw rod 16. Therefore, the groove and the protrusions are provided to ensure the movement of the medicine pushing block 15.
[0032] The rotating cover 3 is radially provided with a chamber, and the chamber is provided with a fourth spring 21 and a ball 22. The fourth spring 21 fixes the ball 22, so that the ball 22 is fitted in the through hole pre-provided in the upper end of the outer cylinder 2. The use of the fourth spring 21 and the ball 22 can realize the segmental feeling of the rotating cover 3, so as to accurately control the injection amount of insulin. The rotating cover 3 is divided into two parts, an inner part which is a circular block and provided with the fourth spring 21 and the ball, and an outer part which is a cover body for covering the upper part of the outer cylinder 2.
[0033] The lower end of the outer cylinder 2 is provided with a protective cap 1 to protect the lower end of the inner cylinder 5 and prevent the inner cylinder 5 and the outer cylinder 2 from moving relative to each other.
[0034] The medicine cartridge 7 comprises a cartridge body, the inside of which is provided with a piston, and the lower end of the push rod 8 abuts against the piston. The lower end of the cartridge body is fixedly connected with a needle. The diameter of the piston can control the storage amount of insulin, and the specification of the medicine cartridge 7 can be set to one-time or multiple-time use.
[0035] The use process of the injector is as follows: when injecting, the rotating cap 3 is rotated in advance to adjust the injection amount, the protective cap 1 is removed, the end cap 4 is vertically attached to the skin, and then the outer cylinder 2 is pressed downward, at this time, under the action of the cross rod 10 and the stopper 9, the first spring 6 is compressed, the needle at the lower end of the cartridge 7 penetrates into the body, the push rod 8 is driven, the second spring 12 releases the elastic potential energy, the position of the reset sleeve 13 is maintained, and the outer cylinder 2 is driven to move downward, at this time, the push block 15 is pressed to the reset sleeve 13, the push rod 8 is driven, the cartridge 7 is sent out, the insulin enters the human body, the injection of the insulin is completed, after the injection is completed, the first spring 6 and the third spring 14 are compressed, the components on the injector are reset, and the push rod 8 is kept in contact with the cartridge 7 under the action of the first U-shaped piece 18 and the first inclined tooth surface 17. The cartridge 7 is replaced, the end cap 4 is rotated, the used cartridge 7 is removed, the fingers are pressed against and the rotating push rod 8 is rotated, the first U-shaped piece 18 and the second U-shaped piece 20 are separated from the first inclined tooth surface 17 and the second inclined tooth surface 19 respectively, at this time, the push rod 8 is pressed into the reset sleeve 13, the upper top wall of the reset sleeve 13 is contacted, the rotating push rod 8 is rotated again to reset, the first U-shaped piece 18 and the second U-shaped piece 20 are matched with the first inclined tooth surface 17 and the second inclined tooth surface 19 respectively, the unused cartridge 7 is placed in the inner cylinder 5, and the end cap 4 is installed.
[0036] The technical means disclosed in the scheme of the application is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes technical solutions composed of any combination of the above technical features.
Claims
1. A portable insulin syringe, characterized in that: The invention comprises an outer cylinder (2), an inner cylinder (5) is slidably provided inside the outer cylinder (2), a medicine cartridge (7) is provided at the lower end of the inner cylinder (5), an end cap (4) is threadedly connected to the lower side wall of the inner cylinder (5), a first spring (6) is fixedly connected inside the end cap (4), and the upper end of the first spring (6) abuts against the lower end of the medicine cartridge (7); A push rod (8) is provided inside the inner tube (5), and the lower end of the push rod (8) abuts against the upper end of the medicine cartridge (7); a cross bar (10) is fixedly connected to the inside of the outer tube (2) in a horizontal manner; a first U-shaped member (18) fixed at one end is provided inside the cross bar (10); a first oblique tooth surface (17) is provided at the lower portion of the push rod (8); the push rod (8) passes through the middle of the cross bar (10), and the other end of the first U-shaped member (18) abuts against the first oblique tooth surface (17), so that the push rod (8) can only move downward; A reset sleeve (13) is provided on the upper part of the inner cylinder (5), a second U-shaped piece (20) is provided at the middle part of the lower end of the reset sleeve (13), a second oblique tooth surface (19) is provided on the upper part of the push rod (8), and the matching mode of the second U-shaped piece (20) and the second oblique tooth surface (19) is the same as that of the first U-shaped piece (18) and the first oblique tooth surface (17), a convex ring (11) is fixedly connected to the inner wall of the upper part of the inner cylinder (5), and a second spring (12) is provided at the upper end of the convex ring (11), and the second spring (12) presses against the lower end of the reset sleeve (13); A medicine pushing block (15) is provided at the upper end of the outer cylinder (2), and the medicine pushing block (15) is located directly above the reset sleeve (13).
2. A portable insulin syringe according to claim 1, characterized in that: Both ends of the cross bar (10) are fixedly connected to a push rod (9), the lower end of the push rod (9) abuts against the upper edge of the cartridge (7), and the upper end of the inner cylinder (5) is provided with a third spring (14), the upper end of the third spring (14) abuts against the upper top wall of the outer cylinder (2).
3. The portable insulin syringe according to claim 1, characterized in that: The upper end of the outer cylinder (2) is provided with a rotating cover (3) in a mating and rotatable manner, and the middle part of the lower end of the rotating cover (3) is fixedly connected with a screw (16), and the screw (16) is threadedly connected to the medicine pushing block (15). The side wall of the medicine pushing block (15) is provided with an axial groove, and the groove is matched with a convex strip preset inside the outer cylinder (2).
4. The portable insulin syringe according to claim 3, characterized in that: The rotating cover (3) is provided with a chamber in the radial direction, and a fourth spring (21) and a ball (22) are provided in the chamber. The fourth spring (21) positions the ball (22) so that the ball (22) fits into a through hole preset at the upper end of the outer cylinder (2).
5. The portable insulin syringe according to claim 1, characterized in that: A protective cap (1) is provided at the lower end of the outer cylinder (2).
6. The portable insulin syringe according to claim 1, characterized in that: The drug cartridge (7) comprises a cylinder body, a piston is provided inside the cylinder body, the lower end of the push rod (8) abuts against the piston, and a needle is fixedly connected to the middle of the lower end of the cylinder body.