An injection medicine transfer filter

Abstract

A syringe medicine transfer filter, comprising a plugging needle 1, a plugging needle 2, a liquid channel 1, a liquid channel 2, a gas channel 1, a gas channel 2, a piston, a piston push rod, a syringe medicine bottle fixing device, and a syringe medicine transfer filter body; characterized in that: the present invention has a liquid channel and two independent and non-connecting gas channels; by changing the air pressure and the air flow direction in the gas channels, and further changing the pressure difference between the infusion bottle and the medicine bottle, the output direction and the output amount of the liquid between the infusion bottle and the medicine bottle are achieved; the operation is simple, the pollution is reduced, the medicine preparation time is short, the application range is wide, it is not limited to soft infusion bottles, and can also be used for hard infusion bottles (glass bottles), not limited to powder injection medicine bottles, and can also be used for aqueous injection bottles, and effectively reduces the filtration of insoluble particles.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and particularly to a syringe transfer medicine filter. Background Art

[0002] Clinically, the instruments used in the medicine dispensing process include disposable medicine dispensing syringes and disposable medicine dispensers. The operation method of the disposable medicine dispensing syringe is that the operator first inserts the disposable medicine dispensing syringe into the infusion bottle, aspirates a small amount of liquid, then pulls it out and inserts it into the injection vial to inject the liquid. After the medicine powder is dissolved, it is aspirated back into the disposable medicine dispensing syringe. Finally, the disposable medicine dispensing syringe is first inserted into the infusion bottle to inject the medicine solution, and then pulled out. The operation method of the disposable medicine dispenser is that the operator inserts the needles at both ends of the disposable medicine dispenser into the injection vial and the flexible infusion bottle respectively, places the flexible infusion bottle upside down above the injection vial, and by squeezing the flexible infusion bottle, the liquid in the flexible infusion bottle flows into the injection vial. After the medicine powder in the injection vial is dissolved, the injection vial is inverted above the flexible infusion bottle, and then by squeezing the flexible infusion bottle, the medicine solution flows into the squeezed flexible infusion bottle. The use of the disposable medicine dispensing syringe is cumbersome, prone to infection, and unable to filter insoluble particles. The disposable medicine dispenser has a narrow scope of application, can only be used for flexible infusion bottles and only for powder injection vials, and the flow rate of the medicine solution is slow. Summary of the Invention

[0003] The present invention provides a syringe transfer medicine filter, aiming to solve the above-mentioned deficiencies in the prior art.

[0004] The technical solution adopted by the present invention to solve the above deficiencies is: a syringe medicine transfer filter, including a plugging needle 1, a plugging needle 2, a liquid inlet / outlet hole 1, a liquid inlet / outlet hole 2, a liquid channel 1, a liquid channel 2, an air inlet / outlet hole 1, an air inlet / outlet hole 2, an air inlet / outlet port 1, an air inlet / outlet port 2, an air channel 1, an air channel 2, a piston, a piston push rod, a syringe medicine bottle fixing device, and a syringe medicine transfer filter body; characterized in that: the present invention has a liquid channel and two independent and non-connecting air channels; by changing the air pressure and air flow direction in the air channels, and then changing the pressure difference between the infusion bottle and the medicine bottle, the output direction and output volume of the liquid between the infusion bottle and the medicine bottle are achieved; the liquid inlet / outlet hole 1 and the air inlet / outlet hole 1 are respectively located at the two bottom sides of the plugging needle 1, and the liquid inlet / outlet hole 2 and the air inlet / outlet hole 2 are respectively located at the two bottom sides of the plugging needle 2. The specific position of the two bottom sides of the plugging needle is the part close to the inner wall of the bottle cap after the plugging needle is inserted into the bottle cap. The purpose of the liquid inlet / outlet hole and the air inlet / outlet hole being located at the two bottom sides of the plugging needle is to reduce the residual amount of the liquid medicine in the medicine bottle when the liquid enters and exits through the liquid inlet / outlet hole, and to reduce the probability of the liquid entering the air channel by mistake when the air enters and exits through the air inlet / outlet hole. The liquid inlet / outlet hole and the air inlet / outlet hole are located on both sides of the plugging needle, aiming to enter the bottle body together when the plugging needle is inserted into the bottle body; the liquid inlet / outlet hole 1 and the liquid inlet / outlet hole 2 are connected through the liquid channel, so that the liquid can flow between the syringe medicine bottle and the infusion bottle; the air inlet / outlet ports 1 and 2 are respectively provided at both ends of the syringe medicine transfer filter body, and the change of the air pressure and air flow direction in the syringe medicine transfer filter body changes the pressure of the syringe medicine bottle and the infusion bottle through the air inlet / outlet ports 1 and 2.

[0005] Further preferably: the air inlet / outlet port 1 and the air inlet / outlet port 2 are not connected. The air inlet / outlet port 1 is connected to the air inlet / outlet hole 1 to form an air channel 1, and the air inlet / outlet port 2 is connected to the air inlet / outlet hole 2 to form an air channel 2. By changing the air pressure and air flow direction in the air channels through the piston in the syringe medicine transfer filter body, the air inlet / outlet ports 1 and 2 are respectively located in the spaces on both sides of the piston and separated by the piston. Specifically, when the piston in the syringe medicine transfer filter body slides towards the plugging needle 1, the air is discharged into the infusion bottle through the air inlet / outlet port 2 and the air inlet / outlet hole 2. The increased air pressure in the infusion bottle compresses the liquid in the infusion bottle to enter the liquid inlet / outlet hole 2 and flow into the syringe medicine bottle through the liquid inlet / outlet hole 1. When the piston in the syringe medicine transfer filter body slides towards the plugging needle 1, the cavity of the syringe medicine transfer filter body close to the air inlet / outlet port 1 becomes negative pressure. To achieve pressure difference balance, the air in the syringe medicine bottle will be sucked through the air inlet / outlet port 1 and the air inlet / outlet hole 1, reducing the air pressure in the syringe medicine bottle, and then accelerating the entry of the liquid in the infusion bottle into the syringe medicine bottle, and vice versa; the liquid flow rate can be controlled by sliding the piston amplitude in the syringe medicine transfer filter body.

[0006] Further preferably, between the liquid inlet / outlet hole 1 and the liquid inlet / outlet hole 2 is a liquid channel, which consists of two pipes with different diameters. The outer diameter of the liquid channel 1 is smaller than the inner diameter of the liquid channel 2. The liquid channel 1 is inserted into the liquid channel 2, and a liquid filtering material is arranged at the middle position of the liquid channel 2.

[0007] Further preferably, the air inlet / outlet 1 and the air inlet / outlet 2 at both ends of the syringe transfer filter body are separated by a piston. The cross-sectional shape of the syringe transfer filter body is cylindrical. A milliliter scale line is printed on one side of the syringe transfer filter body, and the liquid flow rate is controlled according to the milliliter scale line.

[0008] Further preferably, the piston fits well with the inner wall of the syringe transfer filter body and has two pipes with different diameters. The piston push rod, the insertion needle 1, the liquid channel 1, and the gas channel 1 are integrated. The air inlet / outlet 1 is arranged at one end of the piston close to the insertion needle 2. The insertion needle 2, the liquid channel 2, and the gas channel 2 are integrated. The air inlet / outlet 2 is arranged at one end of the piston close to the insertion needle 1.

[0009] Further preferably, the powder injection vial fixing device has a base, and two clamping bars extend from the base. The two clamping bars are in a straight line and have a certain curvature. The clamping bars are provided with inclined buckles, and the inclination can be 75° - 30°. It is fixed on the insertion needle 1 through the base. The material of the powder injection vial fixing device is a material with certain elasticity; the aqueous injection vial fixing device has an inner bottle stopper (in the shape of a conical protrusion) and a bottle body fixing sleeve (in the shape of an inverted cone). The inner bottle stopper is fixed on the insertion needle 1, and the material is an elastic material (such as silicone rubber).

[0010] The said insertion needle can be integrated with the transfer filter or connected to the transfer filter through an interface. The connection of the insertion needle to the transfer filter through an interface is for the convenience of selecting different models of insertion needles in application. Further preferably, for the convenience of manufacturing and cost saving, in production, the insertion needle 1 and the piston push rod are integrated, the insertion needle 2 and the syringe transfer filter body are integrated, and the insertion needle is preferably made of plastic material.

[0011] Compared with the prior art, the present invention has the following advantages: simple operation, reduced contamination, short dispensing time, wide application range, not limited to soft infusion bottles, and can also be used for hard infusion bottles (glass bottles), not limited to powder injection vials, and can also be used for aqueous injection vials, and effectively reduces the filtration of insoluble particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Structural schematic diagram of the syringe transfer filter in the embodiment of the present invention.

[0013] Figure 2 Structural schematic diagram of the syringe transfer filter body in the embodiment of the present invention.

[0014] Figure 3Schematic diagram of the piston structure of the syringe medicine transfer filter in the embodiment of the present invention.

[0015] Figure 4 Schematic diagram of the medicine bottle fixing device structure of the syringe medicine transfer filter in the embodiment of the present invention.

[0016] Numbers in the figure: 11 insertion needle 1, 12 insertion needle 2, 21 liquid inlet / outlet hole 1, 22 liquid inlet / outlet hole 2, 31 liquid channel 1, 32 liquid channel 2, 41 air inlet / outlet hole 1, 42 air inlet / outlet hole 2, 43 air inlet / outlet port 1, 44 air inlet / outlet port 2, 51 gas channel 1, 52 gas channel 2, 6 piston, 61 piston push rod, 71 base, 72 clamping strip, 73 buckle, 81 inner bottle stopper, 82 bottle body fixing sleeve, 9 syringe medicine transfer filter body, 10 liquid filter material. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention and are not limited to the following embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0018] See Figures 1 - 4 , the syringe medicine transfer filter in this embodiment includes 11 insertion needle 1, 12 insertion needle 2, 21 liquid inlet / outlet hole 1, 22 liquid inlet / outlet hole 2, 31 liquid channel 1, 32 liquid channel 2, 41 air inlet / outlet hole 1, 42 air inlet / outlet hole 2, 43 air inlet / outlet port 1, 44 air inlet / outlet port 2, 51 gas channel 1, 52 gas channel 2, 6 piston, powder injection medicine bottle fixing device, 71 base, 72 clamping strip, 73 buckle, water injection medicine bottle fixing device, 81 inner bottle stopper, 82 bottle body fixing sleeve, 9 syringe medicine transfer filter body, 10 liquid filter material. The 9 syringe medicine transfer filter body is cylindrical. At both ends of the 9 syringe medicine transfer filter body, there are respectively 43 air inlet / outlet port 1 and 44 air inlet / outlet port 2. The 43 air inlet / outlet port 1 and the 44 air inlet / outlet port 2 are not connected and are separated by the 6 piston in the 9 syringe medicine transfer filter body. The 43 air inlet / outlet port 1 is connected to the 41 air inlet / outlet hole 1 to form 51 gas channel 1, the 44 air inlet / outlet port 2 is connected to the 42 air inlet / outlet hole 2 to form 52 gas channel 2, and the 31 liquid channel 1 is inserted into the 32 liquid channel 2 to achieve connection.

[0019] See Figure 2 , in this embodiment, the 10 liquid filter material is arranged at the middle position in the 32 liquid channel 2, and the 12 insertion needle 2, the 32 liquid channel 2, and the 52 gas channel 2 are integrally fixed at the middle position of the 9 syringe medicine transfer filter body.

[0020] See Figure 3, in this embodiment, the 6 pistons, 61 piston push rods, 11 insertion needles 1, 31 liquid channels 1, and 51 gas channels 1 are integrated. The 41 air inlet / outlet holes 1 are fixed to the piston near one end of the insertion needle 2, and the 31 liquid channels 1 pass through the middle of the 6 pistons.

[0021] See Figure 4 , in this embodiment, the lyophilized powder injection vial fixing device is fixed to the bottom on one side of the 11 insertion needles 1 of the 9 injection medicine transfer filter body. The two clamping bars are in the same straight line. The 72 clamping bars have a certain curvature, and the 73 buckles with an inclination are provided on the clamping bars. The inclination can be 75° - 30°. It is fixed to the 11 insertion needles 1 through the base. The vial cap is pushed to a certain position, and the 73 buckle catches the cap.

[0022] The above content described in this specification is only an example of the present invention. Any modification, supplement, or substitution in a similar manner within the principle of the technical field to which the present invention belongs, as long as it does not deviate from the content of this specification of the present invention or exceeds the scope defined by this claim book, shall fall within the protection scope of the present invention.

Claims

1. A syringe medicine transfer filter, comprising a first insertion needle, a second insertion needle, a first liquid inlet / outlet hole, a second liquid inlet / outlet hole, a first liquid channel, a second liquid channel, a first air inlet / outlet hole, a second air inlet / outlet hole, a first air inlet / outlet port, a second air inlet / outlet port, a first gas channel, a second gas channel, a piston, a piston push rod, a syringe medicine bottle fixing device, and a syringe medicine transfer filter body; characterized in that: The syringe drug transfer filter includes a liquid channel and two independent and non - communicating gas channels; a piston is provided inside the syringe drug transfer filter body. The first air inlet and outlet communicates with the first air inlet and outlet hole to form the first gas channel, and the second air inlet and outlet communicates with the second air inlet and outlet hole to form the second gas channel. The first air inlet and outlet and the second air inlet and outlet are respectively located in the spaces on both sides of the piston and are separated by the piston; by sliding the piston, the air pressure and the gas flow direction in the gas channel are changed, thereby adjusting the pressure difference between the infusion bottle and the medicine bottle to control the liquid flow; the first liquid inlet and outlet hole and the first air inlet and outlet hole are respectively located at the bottom of both sides of the part close to the inner wall of the bottle cap after the first insertion needle is inserted into the bottle cap, and the second liquid inlet and outlet hole and the second air inlet and outlet hole are respectively located at the bottom of both sides of the part close to the inner wall of the bottle cap after the second insertion needle is inserted into the bottle cap; the first liquid inlet and outlet hole and the second liquid inlet and outlet hole are communicated through the liquid channel, The piston is connected to one end of the piston push rod, and the piston fits with the inner wall of the syringe drug transfer filter body, The first liquid channel and the second liquid channel are two pipes with different diameters. The outer diameter of the first liquid channel is smaller than the inner diameter of the second liquid channel. The first liquid channel is inserted into the second liquid channel, and a liquid filtering material is provided in the second liquid channel, The syringe drug transfer filter body is cylindrical, and a milliliter scale line is printed on one side of it, The syringe medicine bottle fixing device includes a powder syringe medicine bottle fixing device and a water syringe medicine bottle fixing device. The powder syringe medicine bottle fixing device is provided with a base, and two arc - shaped clamping strips extending in the same straight line are provided on the base. A buckle with an inclination of 75° - 30° is provided on the clamping strip; the water syringe medicine bottle fixing device includes an elastic inner bottle stopper and an inverted conical bottle body fixing sleeve, The first insertion needle is integrated with the piston push rod, the first liquid channel and the first gas channel, and the second insertion needle is integrated with the second liquid channel and the second gas channel.

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