Special injector for diabetic patient

Abstract

The invention relates to the technical field of injectors, in particular to a special injector for diabetic patients. The invention provides an improved injector special for diabetics. Comprising an injection needle cylinder, a locking structure, a jacking structure and the like, the locking structure used for clamping and limiting an insulin medicine bottle is arranged at the end, close to a needle head, of the injection needle cylinder, and the jacking structure used for puncturing a sealing cover at a bottle opening of the insulin medicine bottle is arranged in the liquid outlet end of the injection needle cylinder. According to the device, the bottle opening of the insulin bottle is clamped and fixed through the symmetrically-arranged arc-shaped clamping strips, and the sealing connection between the insulin bottle and the injection needle cylinder can be ensured by combining a double-sealing structure formed by the sealing outer ring and the sealing inner ring; the sealing cover of the needle-free puncture insulin medicine bottle with the tip cone is used for being matched with negative pressure to suck liquid medicine, so that a needle head does not need to be directly used for puncturing to suck liquid, the operation safety can be improved, the problem of needle head passivation can be avoided, needle-free puncture extraction and injection of the liquid medicine can be conveniently achieved, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of syringes, in particular to a special syringe for diabetic patients. Background Art

[0002] Diabetic patients need to frequently inject insulin into their bodies to control blood sugar, and usually rely on themselves to do it independently. It is inevitable that when using a needle to draw liquid medicine, they may be injured or the needle may become blunt, affecting the injection due to improper operation. Although there are also needle-free injection devices and injection pens that require matching refills on the market, their internal structures are relatively complex, and the cost of use is relatively high.

[0003] For example, an invention patent for a safety insulin syringe is disclosed on the China Patent Network, with a publication number of CN116271331A and an application date of September 8, 2022. The syringe includes a body, including a jacket, and fixed ribs are arranged around the top of the jacket; a safety sheath assembly; and a safety card block assembly, wherein the safety card block assembly is assembled on the fixed ribs. By assembling the safety card block on the fixed ribs, when the safety device needs to be activated, the safety sheath assembly is moved upward to a specified position on the safety card block, so that the safety sheath can wrap the needle tube, so that the needle tip of the needle tube is not exposed, thereby preventing the needle tip from stabbing medical staff. Although the syringe can play a certain protective role, the protection is not complete enough, and it is not convenient enough when extracting liquid medicine.

[0004] In summary, an improved syringe specifically for diabetic patients is specially designed to solve the above technical problems. Summary of the invention

[0005] In order to overcome the problem that the existing syringes are not safe and convenient enough in actual operation, the technical problem to be solved is to provide an improved syringe specially designed for diabetic patients.

[0006] The technical solution is as follows: A special syringe for diabetic patients includes an injection barrel, a threaded push tube, a piston, a needle head, and scale lines. It also includes a locking structure and a pushing-open structure. The injection barrel is sleeved with an axially movable threaded push tube through the piston. The liquid outlet end of the injection barrel is threadedly connected with a needle head. Scale lines are provided on the outer side of the injection barrel. A locking structure for clamping and limiting an insulin medicine bottle is provided at one end of the injection barrel close to the needle head. The locking structure includes a fixed sleeve, an arc-shaped connecting plate, arc-shaped clamping strips, springs, and a dial block. The fixed sleeve is provided at one end of the injection barrel close to the needle head. The arc-shaped connecting plate is slidably connected to the inner side of the fixed sleeve through a guiding structure. The end of the arc-shaped connecting plate is connected with an arc-shaped clamping strip with an open structure. A spring is connected between the outer side of the arc-shaped connecting plate and the positioning hole on the inner side of the fixed sleeve. A dial block is connected to the outer wall of the arc-shaped connecting plate. A pushing-open structure for piercing the sealing cap at the bottle mouth of the insulin medicine bottle is provided inside the liquid outlet end of the injection barrel.

[0007] Furthermore, the guiding structure is a guiding strip horizontally and vertically distributed with the arc-shaped connecting plate, and a T-shaped structure guide groove provided at the lower end of the arc-shaped connecting plate and engaging with the guiding strip movably.

[0008] Furthermore, the pushing-open structure is a top cone provided at the liquid outlet end of the injection barrel and extending outward. Through holes communicating with the inside of the injection barrel are distributed at intervals on the top cone.

[0009] Furthermore, the locking structure further includes a sealing member capable of closely fitting with the bottle mouth of the insulin medicine bottle.

[0010] Furthermore, the sealing member includes a sealing outer ring and a sealing inner ring provided at the liquid outlet end of the injection barrel, and a circular sealing groove is formed between the inner sides of the sealing outer ring and the sealing inner ring.

[0011] Furthermore, a fine-tuning structure is also included, which includes an adjusting cover, a threaded shaft sleeve, a limiting strip, and a positioning member. A positioning groove is opened at one end of the inner wall of the injection barrel away from the needle head. The adjusting cover is movably sleeved at the tail end of the injection barrel. A threaded shaft sleeve threadedly matched with the threaded push tube is provided in the middle of the inner side of the adjusting cover. A limiting strip abutted against the port of the injection barrel is provided on the inner wall of the adjusting cover. A positioning member engaged with the positioning groove is also provided on the adjusting cover.

[0012] Furthermore, the positioning member includes an adjusting arm, a grooved guide rod, an arc-shaped positioning strip, a reset member, and an anti-slip strip. Grooved guide rods are symmetrically provided between the outer wall of the threaded shaft sleeve and the inner wall of the adjusting cover. An adjusting arm capable of sliding and adjusting is sleeved on the grooved guide rod. An adjusting hole for the adjusting arm to move is opened on the adjusting cover. The inner end of the adjusting arm is connected with an arc-shaped positioning strip fitted with the positioning groove. A reset member abutted between the inner side of the adjusting arm and the outer wall of the threaded shaft sleeve is provided, and the reset member is sleeved on the grooved guide rod. Anti-slip strips are provided at intervals on the outer side of the adjusting arm.

[0013] Further, it further includes a transparent display strip for magnifying the numbers on the scale line. The display strip is axially arranged on the outer wall of the syringe barrel, and the scale lines are evenly distributed on the display strip.

[0014] Advantages of the present invention: The device clamps and fixes the mouth of the insulin vial through symmetrically arranged arc-shaped clamping strips, and combines the double-sealing structure composed of a sealing outer ring and a sealing inner ring to ensure the sealed connection between the insulin vial and the syringe barrel; and uses the needleless puncture of the sealing cap of the insulin vial by the top cone, combined with negative pressure suction of the liquid medicine, so that there is no need to directly use a needle to puncture and extract the liquid. This can not only improve the safety of the operation, but also avoid the problem of needle blunting, and then facilitate the needleless puncture extraction and injection of the liquid medicine, which is convenient to use; and the overall structure of this syringe is simple, which is beneficial to reducing the use cost and facilitating popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 It is a cross-sectional view of the syringe barrel, threaded push tube and piston of the present invention.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of another perspective of the present invention.

[0018] Figure 4 It is a state diagram of the arc-shaped clamping strip of the present invention clamping and fixing the insulin vial.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the locking structure of the present invention.

[0020] Figure 6 It is a structural separation diagram of the locking structure of the present invention.

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the fine-tuning structure of the present invention.

[0022] Figure 8 It is a clamping state diagram of the fine-tuning structure and the syringe barrel of the present invention.

[0023] Figure 9 It is a structural separation diagram of the fine-tuning structure of the present invention.

[0024] Figure 10 It is a three-dimensional structural schematic diagram of the adjusting cover, threaded shaft sleeve and limiting strip of the present invention.

[0025] Reference numerals: 1, syringe barrel; 10, top cone; 11, through hole; 12, positioning groove; 2, threaded push tube; 20, piston; 3, needle; 30, inner needle cap; 31, outer needle cap; 4, fixing sleeve; 40, guiding strip; 41, arc-shaped connecting plate; 42, guiding groove; 43, arc-shaped clamping strip; 44, spring; 45, dial block; 46, positioning hole; 5, outer sealing ring; 50, sealing groove; 51, inner sealing ring; 6, adjusting cap; 60, threaded bushing; 61, adjusting hole; 62, limiting strip; 7, adjusting arm; 70, grooved guide rod; 71, arc-shaped positioning strip; 72, resetting member; 73, anti-slip strip; 8, display strip; 80, scale line; a, insulin vial. Specific embodiments

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] The first embodiment: A syringe dedicated to diabetic patients provided by the present invention, as Figures 1 to 6 , includes a syringe barrel 1, a threaded push tube 2, a piston 20, a needle 3, an inner needle cap 30, an outer needle cap 31, scale lines 80, a locking structure and a jacking structure. The threaded push tube 2 that can move axially is sleeved and connected in the syringe barrel 1 through the piston 20. The liquid outlet end of the syringe barrel 1 is threadedly connected with the needle 3. The outer side of the needle 3 is sleeved with a double protection structure of an inner needle cap 30 and an outer needle cap 31 from the inside outwards, which is beneficial to improving the safety during the installation and disassembly of the needle 3 and avoiding the risk of accidental stabbing; scale lines 80 are provided on the outer side of the syringe barrel 1, and a locking structure is provided at one end of the syringe barrel 1 close to the needle 3. Through the locking structure, it is convenient to quickly clamp and fix the insulin vial a, and then it is convenient to extract the liquid medicine; the locking structure includes a fixing sleeve 4, an arc-shaped connecting plate 41, an arc-shaped clamping strip 43, a spring 44 and a dial block 45. The fixing sleeve 4 is arranged at one end of the syringe barrel 1 close to the needle 3. The two arc-shaped connecting plates 41 are respectively slidably connected to the inside of the fixing sleeve 4 through a guiding structure for horizontal guiding, and the two arc-shaped connecting plates 41 are symmetrically distributed. The end parts of the two arc-shaped connecting plates 41 are respectively connected with arc-shaped clamping strips 43 with open structures, which is beneficial to guiding the bottle mouth of the insulin vial a so that the arc-shaped clamping strips 43 can adaptively open to clamp and fix the port of the insulin vial a, which is convenient to use; a spring 44 is connected between the outer side of the arc-shaped connecting plate 41 and the positioning hole 46 inside the fixing sleeve 4. The spring 44 is used to provide a clamping force for the arc-shaped connecting plate 41 so that the arc-shaped clamping strip 43 is clamped and fitted with the flange at the port of the insulin vial a. The outer walls of the two arc-shaped connecting plates 41 are respectively connected with a dial block 45. A jacking structure is arranged inside the liquid outlet end of the syringe barrel 1. Through the jacking structure, it is convenient to pierce the sealing cap at the bottle mouth of the insulin vial a, avoiding directly using the needle for puncture, and thus being beneficial to improving the safety during use.

[0028] Further, as Figure 6, the guiding structure includes a guiding strip 40 that is horizontally perpendicular to the arc-shaped connecting plate 41, and a T-shaped structure guide groove 42 that is movably engaged with the lower end of the arc-shaped connecting plate 41 and the guiding strip 40. With the cooperation of the T-shaped structure guide groove 42 and the guiding strip 40, the arc-shaped connecting plate 41 can be horizontally guided, thereby facilitating the flexible movement and adjustment of the opening degree of the arc-shaped connecting plate 41.

[0029] Furthermore, as Figure 5 and Figure 6 , the top-opening structure is a top cone 10 provided at the liquid outlet end of the syringe barrel 1 and extending outward. Through holes 11 communicating with the inside of the syringe barrel 1 are spacedly distributed on the top cone 10, which is beneficial for extracting liquid medicine by means of needle-free puncture, making it safer to use, with a simple structure and convenient operation.

[0030] Furthermore, as Figures 3 to 6 , the locking structure further includes a sealing member that can closely fit the mouth of the insulin vial a. The sealing member includes a sealing outer ring 5 and a sealing inner ring 51 provided near the liquid outlet end of the syringe barrel 1, and a circular sealing groove 50 is formed between the inner sides of the sealing outer ring 5 and the sealing inner ring 51. The sealing groove 50 can closely fit the mouth of the insulin vial a, thereby facilitating the prevention of liquid leakage during the extraction of liquid medicine.

[0031] Furthermore, as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 , it further includes a transparent display strip 8 for magnifying the numbers on the scale line 80. The display strip 8 is axially arranged on the outer wall of the syringe barrel 1, and the scale line 80 is evenly distributed on the display strip 8; the display strip 8 is designed as a transparent convex lens structure for magnifying the numbers on the scale line, thereby facilitating the user to read the numbers.

[0032] Before use, first wipe and disinfect the sealing cover at the mouth of the insulin bottle a, then align the mouth of the insulin bottle a with the arc-shaped clamping strip 43 of the open structure and press inward, so that the top cone 10 extending outward can pierce the sealing cover at the mouth of the insulin bottle a, so that the through hole 11 is connected to the liquid medicine channel, and at the same time, the arc-shaped clamping strip 43 can be clamped with the flange end at the mouth of the insulin bottle a, and cooperate with the sealing outer ring 5 and the sealing inner ring 51 to double-seal the mouth of the insulin bottle a; press the shift block 45 to drive the arc-shaped connecting plate 41 to compress the spring 44, and loosen the neck of the medicine bottle through the arc-shaped clamping strip 43; the annular sealing groove 50 formed by the sealing outer ring 5 and the sealing inner ring 51 is close to the bottle mouth, which can prevent leakage when extracting the liquid medicine; then turn the insulin bottle a upside down and pull the threaded push tube 2 outward, so that the piston 20 moves toward the tail end of the injection syringe 1 to generate Negative pressure suction can quickly extract the liquid in the insulin bottle a into the injection syringe 1; there is no need to use the needle 3 to directly pierce the sealing cover at the bottle mouth of the insulin bottle a to extract the liquid, which is safer and more convenient to use; after all the liquid medicine is extracted, the blocks 45 on both sides are pushed open to allow the arc-shaped connecting plate 41 and the arc-shaped clamping strip 43 to open outward along the guide strip 40 to release the restriction on the insulin bottle a, and then the insulin bottle a is removed, and the needle 3 with the inner needle cap 30 and the outer needle cap 31 is installed on the injection syringe 1, and then the outer needle cap 31 and the inner needle cap 30 are removed respectively, and then the threaded push tube 2 is pushed inward to empty the liquid medicine inside the injection syringe 1; during injection, the display bar 8 with a magnifying function is helpful for the user to more clearly and conveniently view the dose to be injected, so that the insulin liquid medicine can be accurately injected into the human body.

[0033] Second implementation mode: Based on the first implementation mode, Figure 1 , Figure 3 , Figure 7 , Figure 8 , Figures 9 to 10 , and also includes a fine-tuning structure, which includes an adjusting cover 6, a threaded sleeve 60, a limiting strip 62 and a locking piece. A positioning groove 12 of an annular structure is opened at the end of the inner wall of the injection syringe 1 away from the needle 3. The adjusting cover 6 is movably sleeved on the tail end of the injection syringe 1. A threaded sleeve 60 threadably matched with the threaded push tube 2 is arranged in the middle of the inner side of the adjusting cover 6. A limiting strip 62 abutting against the port of the injection syringe 1 is arranged on the inner wall of the adjusting cover 6. A locking piece that is locked with the positioning groove 12 is also arranged on the adjusting cover 6; the locking piece enables the adjusting cover 6 to be flexibly fixedly connected or separated from the injection syringe 1, which is convenient to use.

[0034] In addition, if Figure 1 , Figure 3 , Figure 7 , Figure 8 , Figures 9 to 10The locking member 72 includes a locking plate 77 for locking the locking cam 74 and a locking cam 76 for locking the locking cam 74 in a state of being loosened and slidable, and the locking cam 73 is locked with the locking cam 74 when the locking cam 74 is in a state of being loosened and slidable.

[0035] When extracting the liquid medicine in the injection syringe 1, the adjusting arms 7 on both sides are pressed and retracted so that the arc-shaped positioning strips 71 on both sides can be completely separated from the positioning grooves 12, thereby releasing the connection between the adjusting cover 6 and the injection syringe 1. In this way, it is convenient to flexibly push and pull the threaded push tube 2 to move and adjust the position. After the liquid medicine is extracted, the adjusting cover 6 is moved to rotate the threaded shaft sleeve 60 along the threaded push tube 2 so as to reset the adjusting cover 6 so that the arc-shaped positioning strips 71 can be engaged in the positioning grooves 12 to limit the adjusting cover 6. When it is necessary to push the threaded push tube 2 to adjust the injection When the liquid medicine in the syringe 1 is to be emptied, the outer end of the threaded push tube 2 can be clamped and fixed by the cooperation of the little finger and the palm, and the adjustment cover 6 can be rotated by the cooperation of the thumb and the index finger, so that the threaded push tube 2 and the piston 20 can be fine-tuned and moved along the inner wall of the injection syringe 1. This is conducive to conveniently emptying the liquid medicine in the injection syringe 1, avoiding the phenomenon that the threaded push tube 2 and the piston 20 move too much and cause excessive overflow of the liquid medicine to cause waste; and this method also facilitates the accurate extraction of the liquid medicine and the injection of the required dosage, which is easy to use.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A syringe for diabetic patients, comprising an injection syringe (1), a threaded push tube (2), a piston (20), a needle (3) and a scale line (80), characterized in that: The injection syringe (1) also includes a locking structure and a push-opening structure. An axially movable threaded push tube (2) is sleeved in the injection syringe (1) via a piston (20). The liquid outlet end of the injection syringe (1) is connected to a needle (3) via a thread. A scale line (80) is provided on the outside of the injection syringe (1). An end of the injection syringe (1) close to the needle (3) is provided with a locking structure for clamping and limiting the position of the insulin bottle A. The locking structure includes a fixing sleeve (4), an arc-shaped connecting plate (41), an arc-shaped clamping strip (43), a spring (44) and a shifting block (45). The sleeve (4) is arranged on one end of the injection syringe (1) close to the needle (3), the arc-shaped connecting plate (41) is slidably connected to the inner side of the fixed sleeve (4) through a guide structure, the end of the arc-shaped connecting plate (41) is connected to an arc-shaped clamping strip (43) with an open structure, a spring (44) is connected between the outer side of the arc-shaped connecting plate (41) and a positioning hole (46) on the inner side of the fixed sleeve (4), the outer wall of the arc-shaped connecting plate (41) is connected to a shifting block (45), and a top opening structure for piercing a sealing cover at the bottle mouth of an insulin bottle A is arranged inside the liquid outlet end of the injection syringe (1).

2. A special syringe for diabetic patients according to claim 1, characterized in that: The guide structure comprises a guide bar (40) arranged horizontally and vertically with the arc-shaped connecting plate (41), and a T-shaped structural guide groove (42) arranged at the lower end of the arc-shaped connecting plate (41) and movably engaged with the guide bar (40).

3. A special syringe for diabetic patients according to claim 1, characterized in that: The top opening structure is a top cone (10) which is arranged at the liquid outlet end of the injection syringe (1) and extends outwards, and through holes (11) which are connected to the interior of the injection syringe (1) are arranged at intervals on the top cone (10).

4. A special syringe for diabetic patients according to claim 1, characterized in that: The locking structure also includes a sealing member that can fit tightly with the bottle mouth of the insulin bottle a.

5. A special syringe for diabetic patients according to claim 4, characterized in that: The sealing member comprises a sealing outer ring (5) and a sealing inner ring (51) which are arranged at the liquid outlet end of the injection syringe (1), and a circular sealing groove (50) is formed between the inner sides of the sealing outer ring (5) and the sealing inner ring (51).

6. A special syringe for diabetic patients according to claim 1, characterized in that: The invention also comprises a fine adjustment structure, which comprises an adjustment cover (6), a threaded sleeve (60), a limit strip (62) and a locking piece. A positioning groove (12) is provided at one end of the inner wall of the injection syringe (1) away from the needle head (3). The adjustment cover (6) is movably sleeved on the rear end of the injection syringe (1). A threaded sleeve (60) threadably matched with the threaded push tube (2) is provided at the middle part of the inner side of the adjustment cover (6). A limit strip (62) abutting against the port of the injection syringe (1) is provided on the inner wall of the adjustment cover (6). A locking piece engaging with the positioning groove (12) is also provided on the adjustment cover (6).

7. A special syringe for diabetic patients according to claim 6, characterized in that: The positioning member comprises an adjusting arm (7), a grooved guide rod (70), an arc-shaped positioning strip (71), a reset member (72) and an anti-slip strip (73); the grooved guide rod (70) is symmetrically arranged between the outer wall of the threaded sleeve (60) and the inner wall of the adjusting cover (6); the grooved guide rod (70) is sleeved with an adjusting arm (7) capable of sliding adjustment; the adjusting cover (6) is provided with an adjusting hole (61) for the adjusting arm (7) to move; the inner end of the adjusting arm (7) is connected with an arc-shaped positioning strip (71) that fits the positioning groove (12); a reset member (72) is abutted between the inner side of the adjusting arm (7) and the outer wall of the threaded sleeve (60); the reset member (72) is sleeved on the grooved guide rod (70); and the outer side of the adjusting arm (7) is spaced apart with an anti-slip strip (73).

8. A special syringe for diabetic patients according to claim 1, characterized in that: It also includes a transparent display bar (8) for magnifying the numbers on the scale lines (80), the display bar (8) is axially arranged on the outer wall of the injection syringe (1), and the scale lines (80) are evenly distributed on the display bar (8).

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