Medicine storing and dissolving integrated injector

Abstract

The utility model relates to the technical field of medical instruments, in particular to a medicine storing and dissolving integrated injector which comprises a needle cylinder, a main piston and an auxiliary piston are movably connected in the needle cylinder, the auxiliary piston is located below the main piston and abuts against the main piston, a piston rod is fixedly connected to the upper end face of the main piston, and the piston rod is connected with the needle cylinder. The other end of the piston rod is fixedly connected with a push handle, the piston rod drives the main piston to rotate, so that the first through hole and the second through hole coincide, the piston structure is opened after coincidence, and at the moment, a solvent enters the lower portion of the auxiliary piston through the coincident first through hole and second through hole. The main piston is further rotated again to enable the first through hole and the second through hole to be closed in a staggered mode, at the moment, the whole injector can be slightly shaken, the solvent and the powder in the injector can be fully mixed, and therefore preparation of the powder is completed, the injector body is improved, and the injector serves as a powder storage and dissolved medicine preparation device; and powder preparation and injection operation are more convenient, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a drug storage and dissolution integrated syringe. Background Art

[0002] Dust powder (DP) is a dry preparation obtained by mixing and crushing the original drug, a large amount of fillers (carriers) and appropriate stabilizers. Its performance requirements mainly include fineness, uniformity, stability and powder dispensing properties;

[0003] When using powdered drugs, the required solvent must first be drawn with a syringe, then injected into the powder to dissolve it, and then suction and injection are performed, which is inconvenient to operate and wastes manpower and time. Utility Model Content

[0004] The utility model aims to provide an integrated drug storage and dissolution syringe, which has the characteristics of enabling the syringe to serve as a powder storage and dissolution preparation device, making the powder preparation and injection operations more portable, time-saving and labor-saving.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drug storage and dissolution integrated syringe, comprising a syringe, a main piston and a sub-piston movably connected inside the syringe, the sub-piston is located below the main piston and abuts against the main piston, the upper end surface of the main piston is fixedly connected to a piston rod, the other end of the piston rod is fixedly connected to a push handle, the outer wall of the main piston is penetrated by a plurality of evenly distributed first through holes, the outer wall of the sub-piston is penetrated by a plurality of evenly distributed second through holes, and powder is arranged inside the syringe and below the sub-piston.

[0006] In order to cooperate with the first through hole and the second through hole to achieve the sealing and opening of the piston, as a preferred embodiment of the drug storage and dissolution integrated syringe of the utility model, the number and diameter of the first through hole and the second through hole are equal.

[0007] In order to facilitate connection with a needle or an infusion connector, as a preferred embodiment of the utility model, a drug storage and dissolution integrated syringe is provided with a needle plug at the bottom end of the syringe, and a plug cap is detachably connected to the outer wall of the needle plug.

[0008] In order to limit the movement of the auxiliary piston to the vertical direction only, as a preferred integrated drug storage and dissolution syringe of the utility model, limiting grooves are provided on the left and right sides below the inner wall of the syringe, and limiting blocks matching the limiting grooves are fixedly connected on the left and right sides of the outer wall of the auxiliary piston.

[0009] In order to fix the piston rod before use, as a preferred integrated drug storage and dissolution syringe of the utility model, the top edge of the syringe barrel is fixedly connected with a push limit ring, and two safety connecting rods are fixedly connected between the push limit ring and the piston rod.

[0010] In order to improve the sealing performance, as a preferred embodiment of the drug storage and dissolution integrated syringe of the utility model, the main piston and the auxiliary piston are both made of rubber.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The piston rod drives the main piston to rotate, so that the first through hole and the second through hole overlap, and after the overlap, the piston structure is opened. At this time, the solvent enters the bottom of the secondary piston through the overlapping first through hole and the second through hole, and the main piston is further rotated again to stagger and close the first through hole and the second through hole. At this time, the entire syringe can be slightly shaken to fully mix the solvent and powder inside it, thereby completing the configuration of the powder. Then, the syringe is inverted so that one end of the needle plug faces upward, the plug cap is opened, the needle or infusion connector is connected to the needle plug, the push handle and the piston rod are pushed to discharge excess air, and subsequent injection work can be carried out. The device improves the syringe body so that the syringe serves as a powder storage and drug dissolving configuration device, making the powder configuration and injection operations more portable, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall main structural diagram of the utility model;

[0014] Figure 2 This is an enlarged structural diagram of part a of the utility model;

[0015] Figure 3 This is a top view of the main piston structure of the utility model;

[0016] Figure 4 This is a top view of the auxiliary piston structure of the utility model.

[0017] In the figure: 1. syringe; 2. main piston; 3. piston rod; 4. push handle; 5. auxiliary piston; 6. first through hole; 7. second through hole; 8. powder; 9. needle bolt; 10. bolt cap; 11. limit groove; 12. limit block; 13. safety link; 14. push limit ring. DETAILED DESCRIPTION

[0018] See also Figures 1 to 4A drug storage and dissolution integrated syringe comprises a syringe 1, a main piston 2 and a secondary piston 5 are movably connected inside the syringe 1, the secondary piston 5 is located below the main piston 2 and abuts against the main piston 2, a piston rod 3 is fixedly connected to the upper end surface of the main piston 2, a push handle 4 is fixedly connected to the other end of the piston rod 3, a plurality of evenly distributed first through holes 6 are penetrated through the outer wall of the main piston 2, a plurality of evenly distributed second through holes 7 are penetrated through the outer wall of the secondary piston 5, and a powder 8 is arranged inside the syringe 1 and below the secondary piston 5.

[0019] In this embodiment: the syringe is in the initial state as Figure 1 As shown, the main piston 2 and the auxiliary piston 5 are both located in the middle of the syringe 1, and the cavity inside the syringe 1 and below the auxiliary piston 5 is pre-arranged with powder 8, and the piston part includes the main piston 2 and the auxiliary piston 5, and the main piston 2 and the auxiliary piston 5 are in contact with each other, wherein the first through hole 6 located on the outer wall of the main piston 2 and the second through hole 7 located on the outer wall of the auxiliary piston 5 are staggered, thereby achieving sealing, so that the piston composed of the main piston 2 and the auxiliary piston 5 is in a closed state as a whole. When preparing the powder, it is only necessary to pour the required solvent into the syringe 1, and then cut off the two safety links 13 with scissors to release the lock on the piston rod 3, and further rotate the piston rod 3, so that the piston rod 3 drives the main piston 2 to rotate, so that the first through hole 6 and the second through hole 7 overlap, after which the piston structure is opened, at which point the solvent enters the lower portion of the secondary piston 5 through the overlapped first through hole 6 and second through hole 7, and the primary piston 2 is further rotated again to stagger and close the first through hole 6 and second through hole 7, at which point the entire syringe can be slightly shaken to fully mix the solvent and powder inside the syringe, thereby completing the configuration of the powder, and then inverting the syringe so that one end of the needle plug 9 faces upward, opening the plug cap 10, connecting the needle or infusion connector to the needle plug 9, pushing the push handle 4 and the piston rod 3, thereby exhausting excess air, and then performing subsequent injection work. The device improves the syringe body so that the syringe serves as a powder storage and drug dissolving configuration device, making the powder configuration and injection operations more portable, time-saving and labor-saving.

[0020] As a technical optimization solution of the present invention, the number and diameter of the first through holes 6 and the second through holes 7 are equal.

[0021] In this embodiment, the number and diameter of the first through holes 6 and the second through holes 7 are equal, so that the first through holes 6 and the second through holes 7 are displaced and overlapped by rotating the main piston 2 to achieve the closing and opening of the piston structure.

[0022] As a technical optimization solution of the present invention, a needle plug 9 is arranged at the bottom end of the syringe 1, and a plug cap 10 is detachably connected to the outer wall of the needle plug 9.

[0023] In this embodiment, a needle plug 9 is arranged at the bottom end of the syringe 1 to facilitate the connection between the needle and the infusion connector, and the plug cap 10 plays a protective role before use.

[0024] As a technical optimization solution of the utility model, limit grooves 11 are provided on both left and right sides of the lower inner wall of the syringe 1, and limit blocks 12 matching the limit grooves 11 are fixedly connected on both left and right sides of the outer wall of the auxiliary piston 5.

[0025] In this embodiment: the limit block 12 can slide up and down inside the limit groove 11, thereby limiting the secondary piston 5 so that it can only move up and down in the vertical direction, avoiding the secondary piston 5 from rotating with the main piston 2 when rotating, and avoiding the situation where the opening and closing operation of the control piston structure cannot be carried out normally.

[0026] As a technical optimization solution of the utility model, a push limit ring 14 is fixedly connected to the top edge of the syringe 1 , and two safety connecting rods 13 are fixedly connected between the push limit ring 14 and the piston rod 3 .

[0027] In this embodiment: two safety links 13 are fixedly connected between the push limit ring 14 and the piston rod 3, which play a safety role and lock the position of the piston rod 3 before the device is used, thereby avoiding accidental operation to invert the push piston structure.

[0028] As a technical optimization solution of the present utility model, the main piston 2 and the auxiliary piston 5 are both made of rubber.

[0029] In this embodiment, the main piston 2 and the auxiliary piston 5 are both made of rubber material to improve the sealing performance of the piston structure.

[0030] Working principle: When the syringe is in the initial state, the main piston 2 and the auxiliary piston 5 are both located in the middle of the syringe 1, and the cavity inside the syringe 1 and below the auxiliary piston 5 is pre-arranged with powder 8, and the piston part includes the main piston 2 and the auxiliary piston 5, and the main piston 2 and the auxiliary piston 5 abut against each other, wherein the first through hole 6 located on the outer wall of the main piston 2 and the second through hole 7 located on the outer wall of the auxiliary piston 5 are staggered, thereby achieving sealing, so that the piston composed of the main piston 2 and the auxiliary piston 5 is in a closed state as a whole. When preparing the powder, it is only necessary to pour the required solvent into the syringe 1, and then cut the two safety links 13 with scissors to release the lock on the piston rod 3, and further rotate the piston rod 3, so that the piston rod 3 drives the main piston 2 to rotate, so that the first through hole 6 and the auxiliary through hole 7 are staggered. The hole 6 and the second through hole 7 overlap, and after the overlap, the piston structure is opened. At this time, the solvent enters the bottom of the secondary piston 5 through the overlapping first through hole 6 and the second through hole 7, and the main piston 2 is further rotated again to stagger and close the first through hole 6 and the second through hole 7. At this time, the entire syringe can be slightly shaken to fully mix the solvent and powder inside it, thereby completing the configuration of the powder. Then, the syringe is inverted so that one end of the needle plug 9 faces upward, the plug cap 10 is opened, the needle or infusion connector is connected to the needle plug 9, and the push handle 4 and the piston rod 3 are pushed to discharge excess air, so that subsequent injection work can be carried out. The device improves the syringe body so that the syringe serves as a powder storage and drug dissolving configuration device, making the powder configuration and injection operations more portable, saving time and effort.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drug storage and dissolving integrated syringe, comprising a syringe (1), characterized in that: The syringe (1) is internally movably connected with a main piston (2) and a secondary piston (5); the secondary piston (5) is located below the main piston (2) and abuts against the main piston (2); the upper end surface of the main piston (2) is fixedly connected with a piston rod (3); the other end of the piston rod (3) is fixedly connected with a push handle (4); the outer wall of the main piston (2) is penetrated with a plurality of evenly distributed first through holes (6); the outer wall of the secondary piston (5) is penetrated with a plurality of evenly distributed second through holes (7); and powder (8) is arranged inside the syringe (1) and below the secondary piston (5).

2. The drug storage and dissolution integrated syringe according to claim 1, characterized in that: The number and diameter of the first through holes (6) and the second through holes (7) are equal.

3. The drug storage and dissolution integrated syringe according to claim 1, characterized in that: A needle plug (9) is arranged at the bottom end of the syringe (1), and a plug cap (10) is detachably connected to the outer wall of the needle plug (9).

4. The drug storage and dissolution integrated syringe according to claim 1, characterized in that: Limiting grooves (11) are provided on both left and right sides of the lower inner wall of the syringe (1), and limiting blocks (12) matching the limiting grooves (11) are fixedly connected to both left and right sides of the outer wall of the auxiliary piston (5).

5. The drug storage and dissolution integrated syringe according to claim 1, characterized in that: A push-limit ring (14) is fixedly connected to the top edge of the syringe (1), and two safety connecting rods (13) are fixedly connected between the push-limit ring (14) and the piston rod (3).

6. The drug storage and dissolution integrated syringe according to claim 1, characterized in that: The main piston (2) and the auxiliary piston (5) are both made of rubber.

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