CN102670403A - Simple single-passage dosage process and dosage apparatus utilizing same - Google Patents

Abstract

The invention provides a simple single-passage dosage process and a dosage apparatus utilizing the same. A closed single passage is reserved between a medicine bottle and a soft plastic liquid bottle. The soft plastic liquid bottle is disposed above the medicine bottle reversely, drive force is generated by squeezing the soft plastic liquid bottle, and liquid in the soft plastic liquid bottle is squeezed into the medicine bottle to dissolve medicinal powder. The medicine bottle is then disposed above the soft plastic liquid bottle reversely, and air in the soft plastic liquid bottle is injected into the medicine bottle by squeezing the soft plastic liquid bottle again, so that liquid medicine in the medicine bottle is sucked into the soft plastic liquid bottle. Accordingly, the dosage process of transferring medical powder in the medicine bottle into the soft plastic liquid bottle is completed. The dosage apparatus consists of a single-passage displacement needle. Holes at two sharp ends of the displacement needle are communicated with each other to form a passage. By the aid of the simple single-passage dosage process and the dosage apparatus utilizing the same, operation can be simplified, pollution probability is lowered, medicine waste is reduced, cost is lowered, and high market popularization is achieved.

Description

A simple single-channel dispensing method and dispensing device

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a simple single-channel dispensing method and a dispensing device. the

Background technique

The dispensing method to the input liquid in existing medical treatment both at home and abroad, all is to adopt disposable syringe to suck a small amount of liquid to inject in the medicine bottle of dress powder injection, after the medicine powder fully dissolves, draw back with syringe again, inject in the liquid bottle. The above-mentioned traditional dispensing method has disadvantages such as drug waste, cumbersome process, and easy pollution. In view of the above deficiencies, the applicant once disclosed a dispensing method for powder injection and its dispensing device (application number: 201110231119.6, application date: August 12, 2011). The dispensing method using syringes is not suitable for glass or other types of liquid bottles, but the realization of this dispensing method must be driven by a special peristaltic pump. At the same time, the dispensing device includes peristaltic hoses and connecting nozzles. For the soft plastic liquid bottle used), the structure is relatively complicated. For this reason, the applicant successfully developed a simple (dual-channel) dispensing method and its dispensing device on March 15, 2012 (application number: 201210068276.4), which does not require a dedicated peristaltic pump drive, eliminating the need for peristaltic hoses and The structure can be simplified and the cost can be reduced. However, the replacement needle of this device is equipped with dual channels, and the production process is still slightly complicated. Compared with the dispensing of some conventional cheap drugs, its production cost is still high. The damage area is also relatively large when corking, which will have a certain impact on the sealing integrity of the cork.

Contents of the invention

The purpose of the present invention is to provide a simpler single-channel dispensing method for certain dispensing requirements (such as widely used conventional drugs), so as to further meet the diverse needs of clinical dispensing.

Another object of the present invention is to provide a dispensing device with lower cost and simpler structure for certain dispensing needs (such as widely used conventional medicines).

In order to achieve the above object, the technical scheme that the present invention takes is:

A simple single-channel dispensing method, which establishes a closed single-channel between the medicine bottle and the soft plastic liquid bottle, puts the soft plastic liquid bottle upside down on the top of the medicine bottle, squeezes the soft plastic liquid bottle to generate driving force, and extrudes the soft plastic The liquid in the liquid bottle enters the medicine bottle to dissolve the medicine powder; then put the medicine bottle upside down on the top of the soft plastic liquid bottle, squeeze the soft plastic liquid bottle again, inject the air in the soft plastic liquid bottle into the medicine bottle, and suck the medicine back The medicine liquid in the bottle enters into the soft plastic liquid bottle; completes the dispensing process of transferring the medicine powder in the medicine bottle to the soft plastic liquid bottle.

A dispensing device for realizing the above-mentioned simple single-channel dispensing method, which is composed of a single-channel replacement needle, the two ends of the replacement needle are sharp, and the openings at both ends pass through to form a channel.

The waist of the replacement needle is provided with a position-limiting protruding ring, which limits the insertion of one end of the replacement needle into the soft plastic liquid bottle, and its length is less than the distance between the liquid surface of the soft plastic liquid bottle and its cork; the limit of the insertion of the replacement needle at one end of the medicine bottle, The opening is located adjacent to the stopper of the medicine bottle.

Compared with the traditional syringe dispensing method, the above-mentioned simple single-channel dispensing method and dispensing device provided by the present invention are simple to operate, and effectively avoid repeated exposure of needles in the air and injection of unclean air in the ward into liquid bottles; Compared with "a simple (dual-channel) dispensing method and its dispensing device (Application No.: 201210068276.4)" provided by people, although the dispensing efficiency is slightly lower, its structure is simpler, the cost is lower, and the replacement needle The inside is a single channel, the diameter and cross-sectional area are greatly reduced, the damage area is correspondingly reduced when dispensing and puncturing the bottle stopper, and the impact on the sealing integrity of the bottle stopper is correspondingly reduced. The dispensing device, together with other dispensing devices developed by the applicant, can better meet the needs of diverse clinical dispensing.

Description of drawings

Fig. 1 is the schematic diagram of traditional dispensing method

Fig. 2 is a structural schematic diagram of the dispensing device of the present invention

Figure 3-1, Figure 3-2, Figure 4-1, and Figure 4-2 are schematic diagrams of the sequence of the dispensing method of the present invention

In the figure: B-liquid bottle; b-medicine bottle; Z-syringe; 1-channel; 2-replacement needle; 3-opening at the end of the medicine bottle; 4-opening at the end of the liquid bottle;

Detailed ways

Fig. 1 is the schematic diagram of traditional dispensing method. The liquid preparation process needs to use syringe Z to draw a small amount of liquid from liquid bottle B and inject it into medicine bottle b to dissolve the medicine powder. After the medicine powder is dissolved, use syringe Z to draw back the solution from medicine bottle b and inject it into liquid bottle B. dispensing medicine. The whole process is not only complicated, but also the high-concentration powder injection solution will remain in the medicine bottle b and syringe Z, causing waste, and the needle of syringe Z is easily polluted by repeated exposure to the air.

Fig. 2 is a schematic structural diagram of the dispensing device of the present invention. The dispensing device of the present invention is composed of a single-channel replacement needle 2, the replacement needle 2 is an integral structure, both ends are sharp, one end is inserted into the B end of the soft plastic liquid bottle, and a hole 4 is provided at the end of the liquid bottle; The b end of the medicine bottle is provided with an opening 3 at the end of the medicine bottle, and the openings 3 and 4 at both ends are connected to form an axial passage. The waist of the replacement needle 2 is provided with a limiting convex ring 5, which is vertically arranged with the channel 1, and the limiting convex ring 5 is used to limit the end of the replacement needle 2 inserted into the soft plastic liquid bottle B, and its length is shorter than that of the soft plastic liquid bottle The distance between the liquid surface in B and its bottle stopper; it is limited to the end where the replacement needle 2 is inserted into the medicine bottle b, and the opening 3 is located at the stopper of the medicine bottle b.

Fig. 3-1, Fig. 3-1, Fig. 4-1, Fig. 4-2 are schematic diagrams of the sequence of the dispensing method of the present invention. When dispensing medicine, insert the two ends of the replacement needle 2 into the corresponding soft plastic liquid bottle B and medicine bottle b respectively, so that the opening 3 at the end of the medicine bottle is located in the medicine bottle b, and the opening 4 at the end of the liquid bottle is located in the soft plastic liquid bottle inside B. As shown in Figure 3-1, first place the medicine bottle b at the bottom, and put the soft plastic liquid bottle B upside down on the top of the medicine bottle b, so that the end of the replacement needle 2 located in the soft plastic liquid bottle B is in the liquid of the soft plastic liquid bottle B , squeeze the soft plastic liquid bottle B to increase its internal pressure, the pressure in the soft plastic liquid bottle B will be greater than the pressure in the medicine bottle b, and the liquid in the soft plastic liquid bottle B is squeezed into the medicine bottle b through channel 1. As shown in Figure 3-2, when the squeeze on the soft plastic liquid bottle B is released, the pressure inside the soft plastic liquid bottle B becomes smaller, and the pressure in the previously squeezed liquid pressurized medicine bottle b is greater than that of the soft plastic liquid bottle The pressure in B makes the air in the medicine bottle b inject into the soft plastic liquid bottle B through channel 1, and restore the pressure balance in the two bottles. In the same way, by repeatedly extruding and relaxing the soft plastic liquid bottle B, the above-mentioned pressure change and liquid and gas transfer will continue. After the medicine powder in the medicine bottle b is dissolved, under the condition of keeping the original connection state unchanged, turn over the soft plastic liquid bottle B and the medicine bottle b, so that the medicine bottle b is upside down on the top of the soft plastic liquid bottle B, and the soft plastic liquid bottle B The mouth of the bottle is up. As shown in Figure 4-1, at this time, the tip of the replacement needle 2 inserted into the soft plastic liquid bottle B is in the air in the soft plastic liquid bottle B, squeezing the soft plastic liquid bottle B increases its internal pressure, and the soft plastic liquid bottle B The pressure in the liquid bottle B is greater than the pressure in the medicine bottle b, and the air in the soft plastic liquid bottle B is squeezed into the medicine bottle b through the channel 1. As shown in Figure 4-2, when the squeeze on the soft plastic liquid bottle B is released, the pressure inside the soft plastic liquid bottle B becomes smaller, and the pressure in the previously squeezed air-pressurized medicine bottle B is greater than that of the soft plastic liquid bottle B Under the action of the pressure difference, the liquid medicine in the medicine bottle b is sucked back into the soft plastic liquid bottle B through channel 1. Similarly, if the soft plastic liquid bottle B is repeatedly squeezed and loosened, the above-mentioned pressure change and liquid and gas transfer will continue. Since the opening 3 at the end of the medicine bottle is located at a low position and is close to the stopper of the medicine bottle b, the medicine bottle b The liquid medicine in the bottle b is emptied to the greatest extent, reducing the residue of the liquid medicine in the medicine bottle b.

The dispensing method and dispensing device provided by the present invention can complete the dispensing process only by repeatedly squeezing the soft plastic liquid bottle B, and the operation is simple. Residues in. Compared with the syringe dispensing method, this dispensing device transfers liquid and air between two sterile bottles, avoiding repeated exposure of needles in the air and injecting unclean air in the ward into liquid bottle B; Compared with the "simple (dual-channel) dispensing method and its dispensing device (Application No.: 201210068276.4)", although the dispensing efficiency is slightly lower, its structure is simpler, the cost is lower, and it is more popular in the market . The dispensing device, together with other dispensing devices developed by the applicant, can better meet the diverse needs of clinical dispensing.

Claims (3)

1. A simple single-channel dispensing method, characterized by: establishing a closed single-channel between the medicine bottle (b) and the soft plastic liquid bottle (B), and placing the soft plastic liquid bottle (B) upside down on the medicine bottle (b) above, squeeze the soft plastic liquid bottle (B) to generate the driving force, extrude the liquid in the soft plastic liquid bottle (B) into the medicine bottle (b) to dissolve the medicine powder; then put the medicine bottle (b) upside down on the soft Above the plastic liquid bottle (B), squeeze the soft plastic liquid bottle (B) again, inject the air in the soft plastic liquid bottle (B) into the medicine bottle (b), and suck back the medicine liquid in the medicine bottle (b) into the soft plastic liquid bottle (B); complete the dispensing process of transferring the powder in the medicine bottle (b) to the soft plastic liquid bottle (B). 2. A dispensing device for realizing the simple single-channel dispensing method as claimed in claim 1, characterized in that: it is composed of a single-channel replacement needle (2), the two ends of the replacement needle (2) are sharp, and the openings at both ends are (3, 4) connect to form a channel (1). 3. The dispensing device according to claim 2, characterized in that: the waist of the replacement needle (2) is provided with a limiting convex ring (5) to limit the insertion of the replacement needle (2) into the soft plastic liquid bottle (B). One end, the length of which is less than the distance between the liquid level in the soft plastic liquid bottle (B) and its cork; the end where the replacement needle (2) is inserted into the medicine bottle (b) is limited, and the opening (3) is located adjacent to the medicine bottle ( b) at the cork.

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