WO2010048778A1

WO2010048778A1 - Automatic exhausting anti-bubble transfusion set

Info

Publication number: WO2010048778A1
Application number: PCT/CN2009/001171
Authority: WO
Inventors: 徐土松; 周丽
Original assignee: Xu Tusong; Zhou Li
Priority date: 2008-10-27
Filing date: 2009-10-23
Publication date: 2010-05-06

Abstract

An Automatic exhausting transfusion set includes a dropping hopper (1), an upper infusion hose (2) and a lower infusion hose (3). A liquid inlet (7) and a liquid outlet (8) of the dropping hopper (1) are respectively communicated with the upper infusion hose (2) and the lower infusion hose (3). A lower connection tube (9) is sheathed on the liquid outlet (8) of the dropping hopper (1), and the lower end of the lower connection tube (9) is connected with the lower infusion hose (3). The upper end of the lower connection tube (9) extends upwards to form an exhaust pipe (10) in which an axial through hole (12) is arranged, the axial through hole (12) is communicated with the lower infusion hose (3). A liquid guiding clearance (11) which is communicated with the axial through hole (12) is axially arranged at the peripheric walls of the exhaust pipe (10).

Description

Automatic exhaust anti-bubble infusion device

The invention relates to a medical device, in particular to an infusion set.

Background technique

Existing infusion sets generally include a stopper puncture device, a drip bucket, and an infusion hose, which are easy to form bubbles in the drip bucket and the infusion hose during use, so the nurse needs to perform the operation of eliminating the air bubbles, which increases the operation time. Chinese patent (patent number: ZL032054599) proposes an anti-bubble infusion device. This infusion remover removes excess gas from the dripper and the change of the position of the dripper does not enter the downcomer. It is suitable for non-gravity infusion sets, but still at the beginning of operation. Must be manually vented.

Chinese invention patent application (Application No. 200610146971.2) discloses an automatic exhaust self-destructing infusion set consisting of a cork puncture, a catheter and a dripper, characterized in that there is an exhaust pipe in the dripper, and its lower end It is connected to the lower conduit, and the upper end is inclined. When the liquid is injected into the drip bucket, the excess gas in the drip bucket is automatically discharged through the exhaust pipe. When the liquid level of the chemical liquid exceeds the infusion hole of the exhaust pipe, it flows from the infusion hole into the downcomer. Excess gas in the drip chamber was discharged before the liquid medicine flowed into the downcomer, and no air bubbles were formed to achieve automatic exhaust. The residual liquid under the infusion hole in the drip bucket cannot be discharged, cannot be cleaned, and can no longer be used to achieve self-destruction. Since the above-mentioned patented exhaust pipe needs to be made inclined at the upper end, there are difficulties in molding and installing the exhaust pipe.

Summary of the invention

In order to solve the technical defects that need to manually eliminate air bubbles when the existing infusion set is used. SUMMARY OF THE INVENTION The object of the present invention is to provide an automatic exhaust infusion set which effectively solves the technical problem of bubble generation of an infusion set, and has the characteristics of simple structure and convenient use.

In order to achieve the above technical purpose, the present invention adopts the following technical solutions: Automatic infusion infusion set, the infusion set includes a cork piercing device, a flow regulating valve, a drip bucket, an upper infusion hose and a lower infusion hose, the upper infusion hose is connected to the cork penetrator, and the flow regulating valve is arranged in the lower infusion On the hose, the liquid inlet and the outlet of the dripper are respectively connected to the infusion hose and the lower infusion hose, and the lower outlet of the dripper is provided with a lower connecting tube, and the lower end of the lower connecting tube is connected to the lower end The infusion hose, the upper end of the lower connecting pipe extends upward to form an exhaust pipe, the exhaust pipe is provided with an axial through hole, the axial through hole is electrically connected with the lower infusion hose, and is axially in the peripheral wall of the exhaust pipe A liquid guiding gap that is electrically connected to the axial through hole is provided.

The anti-bubble generating principle of the present invention is as follows: After the liquid enters the drip bucket, since the liquid has surface tension, the pressure of the liquid at the beginning cannot overcome the surface tension formed by the liquid in the liquid guiding gap, and the liquid cannot enter the axial through hole; Dropping, the liquid immerses the liquid guiding gap, and the air pressure of the drip bucket increases. When the sum of the air pressure and the liquid pressure causes the pressure to overcome the surface tension formed by the liquid in the liquid guiding gap, the liquid breaks into the gap and enters the axial through hole. Conduct fluid guiding. At this time, since the bubble generated at the time of dropping has floated up after a certain period of time, the liquid entering the bottom of the axial through hole has no bubble, and the generation of the bubble can be effectively prevented.

Preferably, the above liquid guiding slits are one or two or three or four. In general, more than four liquid-conducting gaps increase the cost of processing and at the same time reduce the strength of the exhaust pipe.

Preferably, the upper end of the axial through hole is closed. Closing the upper end of the axial through hole prevents liquid from dripping directly into the axial through hole.

Preferably, the length of the liquid guiding slit is 0.5 cm to 3.0 cm. The length of the liquid guiding slit is very critical. When the length is too short, the amount of liquid in the drip tube is small when the surface tension is overcome, and the bubble does not have a sufficient floating distance; the length is too long, and the liquid dropping time for immersing the liquid guiding gap is increased.

Preferably, the width of the liquid guiding slit described above is 0.2 to 1.5 mm.

5〜1.5毫米。 The thickness of the outer wall of the exhaust pipe is 0. 5~1.5mm. Preferably, the above-mentioned liquid guiding slits are three or four, and three or four liquid guiding slits are uniformly disposed on the peripheral wall of the exhaust pipe, and the upper end of the axial through hole is closed. The upper end of the axial through hole is closed to prevent the liquid from directly dropping into the axial through hole; on the other hand, the strength of the exhaust pipe is increased.

Preferably, the liquid inlet of the dripper is provided with an upper connecting pipe, the upper infusion hose is connected to the upper end of the upper connecting pipe, and the upper connecting pipe extends downward to form a liquid discharging pipe, and the bottom of the liquid discharging pipe is closed. A liquid outlet hole is provided in the side wall of the discharge pipe. The above structure allows the liquid to be immersed in the liquid initially from the side wall of the liquid pipe, thereby avoiding the generation of bubbles due to the initial dropping.

Preferably, the above-mentioned liquid guiding slit is one, and one liquid discharging hole is provided, and the liquid guiding slit and the liquid discharging hole are respectively provided on both sides. The above structure has the simplest structure, and at the same time prevents the liquid on the liquid discharge hole from directly passing through the axial through hole.

Preferably, the lower connecting pipe and the upper connecting pipe are each a hard plastic. Made of hard plastic for easy processing and assembly.

The invention adopts the above technical solution, and realizes the same function as compared with 200610146971.2, can effectively prevent the infusion device bubble generation and at the same time has self-destruction function, but the structure is simpler and more convenient to use, and the invention has Extensive promotion and application value.

DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention.

Fig. 2 is a schematic view showing the structure of the upper connecting pipe in the first embodiment.

Figure 3 is a schematic view showing the structure of the lower connecting pipe in the first embodiment.

4 is a schematic structural view of Embodiment 2 of the present invention. detailed description

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in Figure 1, the automatic infusion set includes a stopper puncturing device, a flow regulating valve, a drip bucket 1, an upper infusion hose 2, and a lower infusion hose 3 (the stopper puncturing device and the flow regulating valve are The existing structure is not marked in the drawing), the upper infusion hose 2 is connected to the stopper stopper, and the flow regulating valve is disposed on the lower infusion hose 3, and the inlet port 7 and the outlet port 8 of the dripper 1 are respectively The upper infusion hose 2 and the lower infusion hose 3 are connected, and the lower connecting tube 9 is sleeved on the liquid outlet 8 of the dripper 1, and the lower infusion hose 3 is connected to the lower end of the lower connecting tube 9. As shown in FIG. 3, the lower connecting pipe 9 is made of hard plastic, and the upper end of the lower connecting pipe 9 extends upward to form an exhaust pipe 10, and the exhaust pipe 10 is provided with an axial through hole 12, and the axial through hole 12 is The lower infusion hose 3 is electrically connected. The thickness of the peripheral wall of the exhaust pipe 10 is 1.0 mm. The peripheral wall of the exhaust pipe 10 is axially provided with a liquid guiding slit 11 which is electrically connected to the axial through hole 12. The length of the liquid guiding slit 11 is 1.5 cm. The width of the liquid slit 11 is 0.5 mm.

As shown in Fig. 1, the inlet port 7 of the dripper 1 is provided with an upper connecting pipe 4, and the upper infusion hose 2 is connected to the upper end of the upper connecting pipe 4. As shown in FIG. 2, the upper connecting pipe 4 is made of hard plastic, and the upper connecting pipe 4 extends downward to form a liquid discharging pipe 5, the bottom of the liquid discharging pipe 5 is closed, and one liquid discharging is provided on the side wall of the liquid discharging pipe 5. The hole 6, the liquid guiding slit 11 and the liquid discharging hole 6 are provided on both sides, respectively.

Example 2

As shown in Figure 4, the automatic infusion set includes a drip bucket 1, an infusion hose 2 and a lower infusion hose 3, and the inlet port 7 and the outlet port 8 of the drip chamber 1 are respectively connected to the infusion soft The tube 2 and the lower infusion hose 3 are provided with a lower connecting tube 9 on the liquid outlet 8 of the dripper 1, and the lower infusion tube 3 is connected to the lower end of the lower connecting tube 9. The lower connecting pipe 9 is an upper end of the rigid plastic lower connecting pipe 9 extending upward to form an exhaust pipe 10, the exhaust pipe 10 is provided with an axial through hole 12, and the upper end of the axial through hole 12 is sealed. The closed axial through hole 12 is electrically connected to the lower infusion hose 3. The thickness of the peripheral wall of the exhaust pipe 10 is 1.0 mm, and the circumferential wall of the exhaust pipe 10 is uniformly provided with three liquid guiding slits 11 which are electrically connected to the axial through holes 12, and the length of the liquid guiding slit 11 is 1.5 cm. The width of the liquid guiding slit 11 is 0.5 mm.

As shown in Fig. 4, the inlet port 8 of the dripper 1 is provided with an upper connecting pipe 4, and the upper infusion hose 2 is connected to the upper end of the upper connecting pipe 4. As shown in FIG. 2, the upper connecting pipe 4 is made of hard plastic, and the upper connecting pipe 4 extends downward to form a liquid discharging pipe 5, and the bottom of the liquid discharging pipe 5 is closed, and the side walls of the liquid discharging pipe 5 are respectively provided on the side walls of the liquid discharging pipe 5 Outlet hole 6.

Claims

Claim

1. Automatic exhaust infusion set, the infusion set includes a cork piercing device, a flow regulating valve, a dripper (1), an upper infusion hose (2) and a lower infusion hose (3), an upper infusion hose (2) Connect the stopper stopper, the flow regulating valve is set on the lower infusion hose (3), and the inlet (7) and outlet (8) of the dripper (1) are connected to the infusion hose (2) and the lower The infusion hose (3) is characterized in that - the outlet port (8) of the dripper (1) is sleeved with a lower connecting tube (9), and the lower end of the lower connecting tube (9) is connected to the lower infusion soft The upper end of the lower connecting pipe (9) forms an exhaust pipe (10), and the exhaust pipe (10) is provided with an axial through hole (12), and the axial through hole (12) is The lower infusion hose (3) is electrically connected, and a liquid guiding slit (11) which is electrically connected to the axial through hole (12) is disposed in the axial direction of the peripheral wall of the exhaust pipe (10).

2. The automatic exhaust infusion set according to claim 1, wherein the liquid guiding slits (11) are one or two or three or four.

3. The automatic exhaust infusion set according to claim 1, wherein the upper end of the axial through hole (12) is closed.

The automatic exhaust infusion set according to claim 1, wherein the length of the liquid guiding slit (11) is 0.5 cm to 3.0 cm.

The automatic exhaust infusion set according to claim 1, characterized in that the width of the liquid guiding slit (11) is 0.2 to 1.5 mm.

The automatic exhaust infusion set according to claim 1, wherein the peripheral wall of the exhaust pipe (10) has a thickness of 0.5 to 1.5 mm.

7. The automatic exhaust infusion set according to claim 1, wherein: the liquid guiding slit (11) is three or four, and three or four liquid guiding slits (11) are evenly arranged in the exhaust pipe ( 10) The peripheral wall, the upper end of the axial through hole (12) is closed.

The automatic exhaust infusion set according to any one of claims 1 to 7, characterized in that: the inlet port (7) of the dripper (1) is provided with an upper connecting pipe (4), The upper infusion hose (2) is connected to the upper end of the upper connecting pipe (4), and the upper connecting pipe (4) extends downward to form a liquid discharging pipe (5), and the bottom of the liquid discharging pipe (5) is closed, in the liquid discharging pipe (5) The side wall is provided with a liquid outlet

(6).

9. The automatic exhaust infusion set according to claim 8, wherein: one liquid guiding slit (11), one liquid discharging hole (6), a liquid guiding slit (11) and a liquid discharging hole ( 6) Set on both sides separately.

The automatic exhaust infusion set according to claim 8, characterized in that the lower connecting tube (9)' and the upper connecting tube (4) are respectively rigid plastic.