Syringe with reserved air structure

Abstract

The utility model provides an injector with a reserved air structure, which belongs to the field of medical instruments, and comprises a needle cylinder, the top of the needle cylinder is movably connected with a core rod, the bottom of the needle cylinder is provided with a needle head, and the surface of the bottom end of the needle cylinder is provided with an auxiliary component. Two sliding blocks slide in two first through grooves and a second through groove, the two sliding blocks drive a moving ring to move on the inner wall of an annular groove and drive a limiting ring to move on the inner wall of a needle cylinder at the same time, internal liquid medicine is sealed in cooperation with a sealing ring, the two ends of two clamping blocks are clamped with two sets of clamping grooves when the two sliding blocks move to the proper position, and the two ends of the two clamping blocks are clamped with the two sets of clamping grooves. And the two arc-shaped grooves are matched with the surfaces of the two guide rods to be clamped, so that the two sliding blocks are limited and fixed, and the purpose of reserving air in the interior is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a syringe with a reserved air structure. Background Art

[0002] In the clinic, patients often need to subcutaneously inject some special drugs (such as azacitidine). The original injection method is to inject subcutaneously after exhausting the air from a one-ml syringe. The drug will remain on the needle, resulting in drug exudation and drug dosage loss. After searching, the application number CN201721095313.5 disclosed a syringe, which records a syringe, a core rod matched with the syringe, and a needle connected to the syringe, and also includes a first finger ring, the first finger ring is circular, the first finger ring is arranged on the outer wall of the syringe, and the axis of the first finger ring is perpendicular to the axis of the syringe. The syringe provided by the utility model, through the first finger ring, enables medical staff to have a better force point when adding medicine, and the syringe is more convenient when extracting medicine, and will not waste too much time in the process of adding medicine, so as to gain more treatment time for critically ill patients. However, the device still has the following defects in actual use: the device lacks a design of reserving air inside when in use, and does not have an adjustable structure, which makes the drug absorption efficiency slow, so it is necessary to design a practical syringe with a reserved air structure. Utility Model Content

[0003] The purpose of the utility model is to provide a syringe with a reserved air structure to solve the problems raised by the above background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a syringe with a reserved air structure, comprising a syringe, the top of the syringe is movably connected to a core rod, the bottom of the syringe is provided with a needle, and the surface of the bottom end of the syringe is provided with an auxiliary component;

[0005] An auxiliary component, which includes a mounting ring installed on the bottom end surface of the syringe, a first through groove is provided on both sides of the mounting ring, and guide rods are provided on the inner walls of the two first through grooves, and sliders are slidably connected to the surfaces of the guide rods, and the opposite ends of the two sliders are fixedly connected to the two sides of the moving ring, and a limiting ring is provided on the inner wall of the moving ring, and a clamping groove is provided on the side of the top of the limiting ring, and a sealing ring is clamped and connected to the inner wall of the clamping groove, and the side of the limiting ring is slidably connected to the inner wall of the syringe, and a conical ring is provided at the bottom of the inner wall of the limiting ring, and a telescopic tube is provided at the bottom of the conical ring, and the limiting ring is set to a height of 0.1 ml.

[0006] As a preferred solution of the utility model: an annular groove is provided below the inner wall of the syringe, and the inner wall of the annular groove is slidably connected to the side of the movable ring.

[0007] As a preferred solution of the utility model: second through grooves are provided on both sides of the bottom surface of the syringe, and the inner walls of the two second through grooves are slidably connected to the surfaces of the two sliding blocks.

[0008] As a preferred solution of the utility model: two groups of card grooves are opened on both sides of the inner walls of the two first through grooves, and the inner walls of the two groups of card grooves can be snap-connected with the two ends of the card block; an arc groove is opened on one side of the card block, and the inner wall of the arc groove is snap-connected with the surface of the guide rod.

[0009] As a preferred solution of the utility model: through holes are provided on the surfaces of the two sliding blocks, and the inner walls of the through holes are interlaced and connected with the surface of the guide rod.

[0010] As a preferred solution of the utility model: a conical groove is provided at the bottom of the inner wall of the syringe, the inner wall of the conical groove is snap-fitted with the surface of the conical ring, a plug hole is provided at the bottom of the inner wall of the conical groove, and the inner wall of the plug hole is inserted and connected with the telescopic tube.

[0011] As a preferred solution of the utility model: a connecting groove is provided at the bottom of the syringe, the inner wall of the connecting groove is engaged with the joint at the top of the needle, and the top of the joint is installed and connected with the bottom of the telescopic tube.

[0012] As a preferred solution of the utility model: a sticking ring is provided on the top of the installation ring, connecting holes are provided on both sides of the sticking ring, and the inner wall of the connecting hole is engaged and connected with the hole grooves provided on both sides of the syringe through a limit pin.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) By sliding the two sliders in the two first through grooves and the second through grooves, the two sliders drive the moving ring to move on the inner wall of the annular groove, and at the same time drive the limiting ring to move on the inner wall of the syringe, and cooperate with the sealing ring to seal the internal liquid medicine. When moving to a suitable position, the two ends of the two clamping blocks are engaged with the two groups of clamping grooves, and the two arc grooves are engaged with the surfaces of the two guide rods, so as to limit and fix the two sliders, so as to achieve the purpose of reserving air inside;

[0015] (2) The movable ring drives the conical ring to separate from the conical groove while the limit ring moves. The conical ring cooperates with the joint to drive the telescopic tube to extend and retract, thereby adjusting the reserved space at the bottom of the syringe while preventing the drug solution from leaking. The drug solution is squeezed by the piston on the core rod, and the drug solution enters the needle through the conical ring, the telescopic tube and the joint, thereby facilitating subcutaneous injection into the patient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is one of the structural schematic diagrams of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary component structure of the utility model.

[0020] In the figure: 1. syringe; 11. core rod; 12. needle; 13. annular groove; 14. second through groove; 15. conical groove; 16. jack; 17. connecting groove; 18. joint; 19. hole groove; 2. auxiliary component; 21. mounting ring; 22. first through groove; 23. guide rod; 24. slider; 25. movable ring; 26. limit ring; 27. snap groove; 28. sealing ring; 29. ​​conical ring; 210. telescopic tube; 211. snap groove; 212. snap block; 213. arc groove; 214. through hole; 215. sticking ring; 216. connecting hole; 217. limit pin. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 , a syringe with a reserved air structure, comprising a syringe 1, a core rod 11 is movably connected to the top of the syringe 1, a needle 12 is arranged at the bottom of the syringe 1, and an auxiliary component 2 is arranged on the surface of the bottom end of the syringe 1;

[0023] See also Figure 4, auxiliary component 2, the auxiliary component 2 includes a mounting ring 21 installed on the bottom end surface of the syringe 1, first through grooves 22 are provided on both sides of the mounting ring 21, and guide rods 23 are provided on the inner walls of the two first through grooves 22. Slide blocks 24 are slidably connected to the surface of the guide rods 23, and the opposite ends of the two slide blocks 24 are fixedly connected to the two sides of the moving ring 25. A limiting ring 26 is provided on the inner wall of the moving ring 25, and a clamping groove 27 is provided on the side of the top of the limiting ring 26. A sealing ring 28 is clamped and connected to the inner wall of the clamping groove 27. The side of the limiting ring 26 is slidably connected to the inner wall of the syringe 1, and a conical ring 29 is provided at the bottom of the inner wall of the limiting ring 26. A telescopic tube 210 is provided at the bottom of the conical ring 29, and the limiting ring 26 is set to a height of 0.1 ml.

[0024] During specific use: the two sliders 24 are slid in the two first through grooves 22 and the second through grooves 14, and the two sliders 24 drive the movable ring 25 to move on the inner wall of the annular groove 13, and at the same time drive the limit ring 26 to move on the inner wall of the syringe 1, and cooperate with the sealing ring 28 to seal the internal medicine liquid. When moving to the appropriate position, the two ends of the two blocks 212 are engaged with the two groups of slots 211, and the two arc grooves 213 are engaged with the surfaces of the two guide rods 23, so as to limit and fix the two sliders 24, so as to achieve the purpose of reserving air inside.

[0025] See also Figure 2 An annular groove 13 is provided below the inner wall of the syringe 1 , and the inner wall of the annular groove 13 is slidably connected to the side of the movable ring 25 .

[0026] During specific use, the side of the moving ring 25 moves on the inner wall of the annular groove 13 , so as to facilitate the adjustment of the position of the limiting ring 26 .

[0027] See also Figure 3 Second through grooves 14 are provided on both sides of the bottom surface of the syringe 1 , and the inner walls of the two second through grooves 14 are slidably connected to the surfaces of the two sliders 24 .

[0028] When used specifically, the surfaces of the two sliders 24 are slidably connected to the two second through grooves 14, so as to limit their movement.

[0029] See also Figure 4 Two groups of slots 211 are provided on both sides of the inner walls of the two first through grooves 22. The inner walls of the two groups of slots 211 can be engaged with the two ends of the block 212. An arc groove 213 is provided on one side of the block 212. The inner wall of the arc groove 213 is engaged with the surface of the guide rod 23.

[0030] When used specifically, when moved to a suitable position, the two ends of the two blocks 212 are engaged with the two groups of slots 211 , and the two arc slots 213 are engaged with the surfaces of the two guide rods 23 , so as to limit and fix the two sliders 24 .

[0031] See also Figure 4 The surfaces of the two sliders 24 are both provided with through holes 214 , and the inner walls of the through holes 214 are interlaced and connected with the surface of the guide rod 23 .

[0032] During specific use, the two sliders 24 cooperate with the two through holes 214 to slide on the surface of the guide rod 23, so as to facilitate the movement of the guide rod 23.

[0033] See also Figure 2 A conical groove 15 is provided at the bottom of the inner wall of the syringe 1, and the inner wall of the conical groove 15 is engaged with the surface of the conical ring 29. A plug hole 16 is provided at the bottom of the inner wall of the conical groove 15, and the inner wall of the plug hole 16 is inserted and connected with the telescopic tube 210.

[0034] A connecting groove 17 is formed at the bottom of the syringe 1 , the inner wall of the connecting groove 17 is engaged with a connector 18 at the top of the needle 12 , and the top of the connector 18 is installed and connected with the bottom of the telescopic tube 210 .

[0035] During specific use: the movable ring 25 drives the conical ring 29 to separate from the conical groove 15 while the limit ring 26 moves, and the conical ring 29 cooperates with the joint 18 to drive the telescopic tube 210 to be extended and retracted, thereby adjusting the reserved space at the bottom of the syringe 1 while preventing the leakage of the liquid medicine. The piston on the core rod 11 squeezes the liquid medicine, and the liquid medicine enters the needle 12 through the conical ring 29, the telescopic tube 210 and the joint 18, so as to facilitate subcutaneous injection of the patient.

[0036] See also Figure 4 A sticking ring 215 is provided on the top of the mounting ring 21 , and connecting holes 216 are provided on both sides of the sticking ring 215 . The inner wall of the connecting hole 216 is engaged and connected with the hole grooves 19 provided on both sides of the syringe 1 through a limit pin 217 .

[0037] During specific use: fit the sticking ring 215 to the surface of the syringe 1 , and insert the two limit pins 217 into the corresponding two connecting holes 216 and the hole groove 19 , so as to facilitate the installation and fixation of the sticking ring 215 and the mounting ring 21 to the syringe 1 .

[0038] When in use, the two sliders 24 are slid in the two first through grooves 22 and the second through groove 14, and the two sliders 24 drive the moving ring 25 to move on the inner wall of the annular groove 13, and at the same time drive the limiting ring 26 to move on the inner wall of the syringe 1, and cooperate with the sealing ring 28 to seal the internal liquid medicine. When moving to a suitable position, the two ends of the two clamping blocks 212 are clamped with the two groups of clamping grooves 211, and the two arc grooves 213 are clamped with the surfaces of the two guide rods 23 to limit and fix the two sliders 24, so as to achieve the purpose of reserving air inside; the moving ring 25 drives the conical ring 29 to separate from the conical groove 15 while the limiting ring 26 moves, and the conical ring 29 cooperates with the joint 18 to drive the telescopic tube 210 to telescope, thereby adjusting the reserved space at the bottom of the syringe 1 while avoiding liquid medicine leakage, and the piston on the core rod 11 squeezes the liquid medicine, and the liquid medicine enters the needle 12 through the conical ring 29, the telescopic tube 210 and the joint 18, so as to facilitate subcutaneous injection of the patient.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A syringe with a reserved air structure, characterized in that: It comprises a syringe (1), the top of the syringe (1) is movably connected to a core rod (11), the bottom of the syringe (1) is provided with a needle head (12), and the surface of the bottom end of the syringe (1) is provided with an auxiliary component (2); The auxiliary component (2) comprises a mounting ring (21) mounted on the bottom surface of the syringe (1), the mounting ring (21) is provided with a first through groove (22) on both sides, the inner walls of the two first through grooves (22) are provided with a guide rod (23), the surface of the guide rod (23) is slidably connected with a slider (24), the opposite ends of the two sliders (24) are fixedly connected to the two sides of the moving ring (25), and the moving ring (25) The inner wall of the syringe (1) is provided with a limiting ring (26), the side of the top of the limiting ring (26) is provided with a snap-in groove (27), the inner wall of the snap-in groove (27) is snap-connected with a sealing ring (28), the side of the limiting ring (26) is slidably connected to the inner wall of the syringe (1), the bottom of the inner wall of the limiting ring (26) is provided with a conical ring (29), the bottom of the conical ring (29) is provided with a telescopic tube (210), and the limiting ring (26) is set to a height of 0.1 ml.

2. The syringe with a reserved air structure according to claim 1, characterized in that: An annular groove (13) is provided below the inner wall of the syringe (1), and the inner wall of the annular groove (13) is slidably connected to the side of the movable ring (25).

3. The syringe with a reserved air structure according to claim 1, characterized in that: Second through grooves (14) are provided on both sides of the bottom surface of the needle cylinder (1), and the inner walls of the two second through grooves (14) are slidably connected to the surfaces of the two sliding blocks (24).

4. The syringe with a reserved air structure according to claim 1, characterized in that: Two groups of clamping grooves (211) are provided on both sides of the inner walls of the two first through grooves (22), and the inner walls of the two groups of clamping grooves (211) can be clamped and connected with the two ends of the clamping block (212). An arc groove (213) is provided on one side of the clamping block (212), and the inner wall of the arc groove (213) is clamped and connected with the surface of the guide rod (23).

5. The syringe with a reserved air structure according to claim 1, characterized in that: The surfaces of the two sliding blocks (24) are each provided with a through hole (214), and the inner wall of the through hole (214) is interlacedly connected with the surface of the guide rod (23).

6. The syringe with a reserved air structure according to claim 1, characterized in that: A conical groove (15) is provided at the bottom of the inner wall of the syringe (1), and the inner wall of the conical groove (15) is snap-fitted with the surface of the conical ring (29). An insertion hole (16) is provided at the bottom of the inner wall of the conical groove (15), and the inner wall of the insertion hole (16) is inserted and connected with the telescopic tube (210).

7. The syringe with a reserved air structure according to claim 1, characterized in that: The bottom of the syringe (1) is provided with a connecting groove (17), the inner wall of the connecting groove (17) is engaged with the joint (18) at the top of the needle (12), and the top of the joint (18) is installed and connected with the bottom of the telescopic tube (210).

8. The syringe with a reserved air structure according to claim 1, characterized in that: A contact ring (215) is provided on the top of the mounting ring (21), and connecting holes (216) are provided on both sides of the contact ring (215). The inner wall of the connecting hole (216) is engaged and connected with the hole grooves (19) provided on both sides of the syringe (1) through a limit pin (217).

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