CN100435866C - Medical use dispensing device - Google Patents

Abstract

The present invention relates to a medical medicine dispensing device, particularly to an appliance used for infusion medicine dispensing, which belongs to the technical field of medical appliances. The medical medicine dispensing device comprises an air pump, a ventilation tube and a liquid guiding tube, wherein one end of the ventilation tube is connected to the air pump which has two functions of blowing and sucking. The other end of the ventilation tube is provided with a ventilation needle for an injection bottle, and the ventilation needle for an injection bottle is used for being inserted into the injection bottle. One end of the liquid guiding tube is connected with a liquid filling needle for an injection bottle, and the other end is connected with a needle used for an infusion bottle. The liquid filling needle for an injection bottle is used for being inserted into the injection bottle, and the length of the liquid filling needle for an injection bottle approaches to the depth of the applied injection bottle. The needle used for an infusion bottle is used for being inserted into the infusion bottle, and the front end of a needle head is provided with a liquid filling opening. The length of the needle used for an infusion bottle is sufficient for the liquid filling opening of the needle used for an infusion bottle to be positioned under the liquid surface of liquid medicine contained in the infusion bottle when the needle used for an infusion bottle is inserted into the infusion bottle. The medical medicine dispensing device has the advantages of simple operating process, avoided generation of contamination phenomena, wide range of application, etc.

Description

Medical Dispenser

technical field

The invention belongs to the technical field of medical devices, in particular to a device for infusion and medicine dispensing.

Background technique

When dispensing medicine for intravenous infusion in hospital, the usual method of operation is to extract medicinal liquid from a plurality of injection bottles with a syringe earlier, then inject in the infusion bottle for infusion. If it is a powder injection, it must be dissolved with an infusion. The above-mentioned operation process is relatively complicated, and the labor intensity for the nurse is high, and the medicinal liquid is easily polluted in the process of repeatedly aspirating the medicinal liquid with the syringe.

For this reason, Chinese patent 002144603 provides a kind of "medical disposable infusion dispensing device", which is to set positive and negative pressure ports on the dispensing device, and the ventilation joint at one end of the ventilation tube is respectively connected to the positive and negative pressure ports, and the other end of the ventilation tube is ultra-short The needle is inserted into the infusion bottle, the super-long needle at one end of the dispensing tube is inserted into the infusion bottle, and the ordinary needle at the other end of the dispensing tube is inserted into the dispensing bottle. Through the positive and negative pressure ports, the liquid medicine in the infusion bottle reaches the dispensing bottle, and after being dissolved and diluted with the medicine in the dispensing bottle, it flows back into the infusion bottle. Obviously, after using the infusion dispenser, nurses can improve work efficiency and reduce pollution during the dispensing process.

But existing dispensing device of this structure also has many weak points, mainly shows in:

1. Since the positive and negative pressure ports are connected to the infusion bottle through the ventilation tube, after completing the dispensing operation, it is necessary to pull out the ventilation needle and the extra-long needle inserted in the infusion bottle, and then insert the needle of the infusion set. Still more troublesome.

2. When the infusion is packaged in a soft bag, negative pressure cannot be formed in the infusion bag, and of course the above-mentioned dispensing device cannot be used, so there are certain limitations in the scope of application.

3. In the dispensing process, the last step is to connect the infusion bottle to the infusion bottle through the negative pressure port to suck the medicinal liquid in the dispensing bottle back into the infusion bottle. Since the liquid medicine already exists in the infusion bottle, it is possible that the liquid medicine enters the vent tube, which reduces the liquid medicine in the infusion bottle, and causes the vent pipe and the negative pressure port to be polluted, which directly affects the function of the dispenser. Normal use.

Contents of the invention

The object of the present invention is to solve the above problems and provide a medical dispensing device with a novel structure, which has the characteristics of reasonable structure, convenient operation, wide application range, high work efficiency and no pollution.

The purpose of the present invention can be achieved through the following technical solutions: the medical dispensing device includes an air pump, a ventilation tube and a catheter, and one end of the ventilation tube is connected to the air pump, and it is characterized in that the air pump is a dual-purpose air pump for blowing and sucking The other end of the ventilation tube is connected with an injection bottle ventilation needle, and the injection bottle ventilation needle is used for inserting into the injection bottle; The needle for infusion bottle, the liquid-through needle for injection bottle is used to insert into the injection bottle, and its length is close to the depth of the applied injection bottle, the needle for infusion bottle is used to insert into the infusion bottle, and the front end of the needle has a liquid opening, And the length of the needle for the infusion bottle is sufficient so that when the needle for the infusion bottle is inserted into the applied infusion bottle, its liquid opening can be under the liquid level of the liquid medicine contained in the infusion bottle.

When the medical dispensing device is in use, first, connect one end of the ventilation tube to the air pump, insert the ventilation needle of the injection bottle at the other end into the injection bottle, and insert the liquid-through needle of the injection bottle at one end of the catheter tube into the injection bottle. The needle is inserted into the infusion bottle; then, the air pump is sucked to generate negative pressure in the ventilation tube, causing the pressure in the injection bottle to be lower than the pressure in the infusion bottle, so that the medicine in the infusion bottle will flow into the injection through the catheter Shake the injection bottle to fully mix or dissolve the medicinal liquid flowing into the injection bottle and the powder or liquid in the injection bottle; finally, make the air pump blow air to generate positive pressure, and under the action of the pressure, the prepared medicine in the injection bottle will be fully mixed or dissolved. The good medicinal liquid flows back into the infusion bottle through the catheter to complete the whole dispensing operation.

In the above-mentioned medical dispensing device, the venting needle of the injection bottle and the liquid-passing needle of the injection bottle can be combined into one structure to form a needle for an injection bottle, and the needle of the venting needle of the injection bottle and the The needles of the liquid-passing needle of the ampoule are socketed together, and the needle body of the venting needle of the ampoule and the needle of the liquid-passing needle of the ampoule are combined together, but the venting needle of the ampoule and the liquid-passing needle of the ampoule have completely independent channels.

The needle for the injection bottle combining two into one can make the operation of the medical dispensing device simple and convenient, and the nurse only needs to insert it into the injection bottle once.

In the above-mentioned medical dispensing device, there is an independent air passage on the needle body of the infusion bottle needle, the air outlet at the inner end of the air passage is located in the middle of the needle head of the infusion bottle, and the outer end of the air passage is a connecting pipe , at the rear of the needle body for the infusion bottle.

After the dispensing is completed, the connecting tube can be used to directly connect with the infusion set, and the operation of inserting the infusion needle into the infusion bottle and the infusion needle on the infusion set is omitted, which greatly simplifies the whole operation process.

In the above-mentioned medical dispensing device, a liquid reservoir is connected in series with the ventilation pipe. This reservoir is for protection. When the air pump is sucking air to make the liquid medicine enter the injection bottle, if the liquid medicine entering is too much, and the air pump is not stopped when it exceeds the needle air vent of the injection bottle, the liquid medicine will enter the ventilation tube. A liquid storage device is connected in series on the ventilation pipe, so that the liquid medicine entering the ventilation pipe can flow into the liquid storage device, which plays a buffering effect and prevents the liquid medicine from entering the air pump and causing pollution to the air pump; The liquid medicine flowing into the liquid reservoir is hydraulically returned to the infusion bottle, so that the liquid medicine will not be reduced.

Compared with the existing technology, the medical dispensing device has the following advantages:

1. Due to the dual-purpose air pump, the entire dispensing device can complete the entire dispensing operation without additional connection after the pipeline is connected, so the operation process is simple and can avoid secondary pollution caused by the reconnection of the tube.

2. The needle for the injection bottle is combined into one, so that the nurse only needs to insert the injection bottle once, and the operation is very convenient.

3. The needle length of the liquid-through needle of the injection bottle and the needle of the infusion bottle is longer than that of the common needle. No matter how the infusion bottle is placed, the medicinal liquid in the infusion bottle can enter the catheter through the needle of the infusion bottle, and the injection The medicinal liquid in the bottle can flow back into the infusion bottle to the greatest extent.

4. The medical dispensing device can be applied to various infusion bottles, infusion bags and injection packaging containers, and has high practical value.

Description of drawings

Fig. 1 is a structural schematic diagram of the medical dispensing device.

Fig. 2 is a schematic structural view of the medical dispensing device in use.

Fig. 3 is a sectional view of the needle for the injection bottle in the medical dispensing device.

Fig. 4 is a sectional view of the needle for the infusion bottle in the medical dispensing device.

In the figure, 1, air pump; 11, blowing port; 12, suction port; 2, ventilation tube; 3, catheter; 4, needle for injection bottle; 41, ventilation needle for injection bottle; 411, needle head; 412, needle Body; 413, air vent; 42, liquid-through needle of injection bottle; 421, needle head; 422, needle body; 423, liquid-through port; 5, needle for infusion bottle; 51, needle head; 511, liquid-through port; Body; 53, connecting pipe; 54, ventilation channel; 541, venting port; 542, connecting pipe; 6, injection bottle; 9. Rubber stopper; 10. Liquid storage device.

Detailed ways

As shown in FIG. 1 , the medical dispensing device includes an air pump 1 , a ventilation tube 2 and a catheter 3 . In this embodiment, a switching valve 8 is connected in series between the ventilation pipe 2 and the air pump 1 , and the end of the ventilation pipe 2 , the blowing port 11 and the suction port 12 of the air pump 1 are all connected to the switching valve 8 .

In the switching valve 8 there are an air blowing channel 81 and an air intake channel 82 . When one end of the air blowing channel 81 is at a position communicating with the air blowing port 11 of the air pump 1 , the other end of the air blowing channel 81 is in communication with the air pipe 2 . At this moment, the vent pipe 2 is in a positive pressure state. Conversely, when one end of the air suction channel 82 is in communication with the air suction port 12 of the air pump 1 , the other end of the air suction channel 82 is in communication with the ventilation tube 2 . At this moment, the vent pipe 2 is in a negative pressure state.

An air port 83 is also provided on the switching valve 8 . Air is inhaled or discharged through the air port 83 to maintain the air pressure balance inside and outside the air pump 1 .

As shown in FIG. 2 , in this embodiment, a two-in-one ampoule needle 4 is used to insert into the ampoule 6 . As shown in Fig. 3, the needle 4 for the injection bottle is composed of the liquid-through needle 42 of the injection bottle and the vent needle 41 of the injection bottle, wherein the needle head 421 of the liquid-through needle 42 of the injection bottle is located at the center, and its length is relatively long, close to that of the injection bottle. Apply the depth of the ampule 6.

As shown in FIG. 3 , in this embodiment, the needle 411 of the venting needle 41 of the ampoule is sleeved on the needle 421 of the liquid venting needle 42 of the ampoule. The air vent 413 of the needle 411 of the vent needle 41 of the ampoule is in the middle of the needle 421 of the liquid needle 42 of the ampoule, and the liquid port 423 of the needle 421 of the liquid needle 42 of the ampoule is at the front end of the needle 421 . At the same time, the needle body 422 of the liquid-through needle 42 of the ampoule is sleeved in the needle body 412 of the vent needle 41 of the ampoule bottle. In this way, the liquid-through needle 42 of the ampoule can be retracted in the vent needle 41 of the ampoule. By stretching the liquid-through needle 42 of the injection bottle, the extension length of the liquid-through needle 42 of the injection bottle can be adjusted, so as to be suitable for the use of injection bottles 6 of different depths, and improve the practicability of the dispensing device.

A rubber stopper 9 is also sheathed in the middle part of the needle 4 for the ampoule. When the ampoule bottle 6 used by the dispenser is an ampoule bottle, there is no rubber stopper for the needle 4 inserted into the bottle mouth. At this time, the bottle mouth of the ampoule can be sealed by the rubber stopper 9 set in the middle of the needle 4 for the injection bottle, so that positive and negative pressures can be generated in the ampoule to complete the dispensing operation. Obviously, such a structure can expand the application range of the dispenser.

As shown in FIGS. 1 and 2 , one end of the catheter 3 is connected to the liquid-through needle 42 of the injection bottle, and the other end is connected to the needle 5 for the infusion bottle. The needle 5 for the infusion bottle includes a needle head 51 and a needle body 52, and the front end of the needle head 51 has a liquid-through 511. The length of the needle head 51 of the needle 5 for the infusion bottle is sufficient to make the liquid opening 511 of the needle 5 for the infusion bottle inserted into the applied infusion bottle 7 under the liquid level of the liquid medicine contained in the infusion bottle 7 .

As shown in Figure 4, there is an independent air passage 54 on the needle body 52 of the needle 5 for the infusion bottle, and the inner end air vent 541 of the air passage 54 is located at the middle part of the needle head 51 of the needle 5 for the infusion bottle, and the outer end of the air passage 54 For taking over the tube 542, it is at the rear portion of the needle body 52 of the infusion bottle, and can be used to be connected with the infusion tube after dispensing.

In this embodiment, the needle head 51 of the needle 5 for the infusion bottle is sleeved in the needle body 52 , and there is a joint 53 at the rear of the needle head 51 , and the catheter 3 is connected to the joint 53 . Obviously, in such a structure, the needle 51 can be stretched on the needle body 52 to adjust the protruding length of the needle 51 so as to be suitable for infusion bottles of different specifications.

After the dispensing is completed, as long as the catheter tube 3 is removed, the infusion tube is connected to the connecting tube 542 of the needle 5 of the infusion bottle, and the operation is very simple and convenient.

When the medical dispensing device is in use, firstly, turn the switching valve 8 so that the suction channel 82 communicates with the suction 12 of the air pump 1; Pipe 3, draw the liquid medicine in the infusion bottle 7 into the injection bottle 6; then, shake the injection bottle 6, so that the medicine liquid flowing into the injection bottle 6 is fully mixed or dissolved with the powder or liquid in the injection bottle 6; finally, Turn the switching valve 8 so that the air blowing channel 81 communicates with the air blowing port 11 of the air pump 1. At this time, a positive pressure state is formed in the ventilation tube 2, and the prepared medicinal solution in the injection bottle 6 is passed through the catheter under the action of the pressure. 3 flow back in the infusion bottle 7 to complete the dispensing operation.

As shown in FIG. 1 and FIG. 2 , in this embodiment, a liquid reservoir 10 is connected in series with the vent pipe 2 . The liquid reservoir 10 plays a protective role. When excessive medicinal liquid is sucked into the injection bottle 6 , the medicinal liquid can flow into the liquid reservoir 10 , thereby preventing the medicinal liquid from entering the air pump 1 and causing pollution to the air pump 1 .

Claims (7)

1. A medical dispensing device, comprising an air pump (1), a ventilation tube (2) and a catheter (3), one end of the ventilation tube (2) is connected to the air pump (1), it is characterized in that the The air pump (1) is a dual-purpose air pump for blowing and sucking; the other end of the ventilation pipe (2) is connected with an injection bottle ventilation needle (41), and the injection bottle ventilation needle (41) is used to insert into the injection bottle (6); One end of the catheter (3) is connected with an injection bottle liquid-passing needle (42), and the other end is connected with an infusion bottle needle (5), and the injection bottle liquid-through needle (42) is used for inserting the injection bottle ( 6), and its length is close to the depth of the injection bottle (6) used, the needle (5) for the infusion bottle is used to insert in the infusion bottle (7), and the front end of the needle (51) has a liquid opening (511 ), and the length of the infusion bottle needle (5) is enough to make the infusion bottle needle (5) inserted into the applied infusion bottle (7), its liquid opening (511) can be in the liquid medicine in the infusion bottle (7) Under the liquid surface; a liquid reservoir (10) is connected in series on the vent pipe (2). 2. The medical dispensing device according to claim 1, characterized in that, the injection bottle ventilation needle (41) and the injection bottle liquid passage needle (42) adopt a combined structure to form a single injection bottle needle (4), in the injection bottle needle (4), the needle (411) of the injection bottle ventilation needle (41) is socketed with the needle (421) of the injection bottle liquid passage needle (42), and the injection bottle ventilation needle (41 ) needle body (412) and the needle body (422) of the ampoule liquid-passing needle (42), but the ampoule venting needle (41) and the ampoule liquid-passing needle (42) have completely independent channels. 3. The medical dispensing device according to claim 1, characterized in that there is an independent ventilation channel (54) on the needle body (52) of the needle (5) for the infusion bottle, and the ventilation channel (54) The inner vent (541) is located in the middle of the needle (51) of the infusion bottle needle (5), and the outer end of the vent channel (54) is a connecting piece (542), which is located in the needle body (52) of the infusion bottle needle (5). of the rear. 4. The medical dispensing device according to claim 1, 2 or 3, characterized in that a switching valve (8) is connected in series between the ventilation pipe (2) and the air pump (1), and the end of the ventilation pipe (2) The blowing port (11) and the suction port (12) of the part, the air pump (1) are all connected on the switching valve (8). 5. The medical dispensing device according to claim 2, characterized in that, the needle (411) of the injection bottle ventilation needle (41) is sleeved on the needle (421) of the injection bottle liquid passage needle (42), The needle body (422) of the liquid-through needle (42) of the ampoule is sleeved in the needle body (412) of the vent needle (41) of the ampoule. 6. The medical dispensing device according to claim 2, characterized in that a rubber stopper (9) is covered in the middle of the needle (4) for the ampoule bottle. 7. The medical dispensing device according to claim 3, characterized in that, the needle (51) of the needle (5) for the infusion bottle is sleeved in the needle body (52), and the needle (51) There is a connecting pipe (53) at the rear portion, and the catheter (3) is connected with this connecting pipe (53).

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