CN2370876Y

CN2370876Y - Medical precision transfusion system

Info

Publication number: CN2370876Y
Application number: CN 99208330
Authority: CN
Inventors: 王强
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-20
Filing date: 1999-04-20
Publication date: 2000-03-29
Anticipated expiration: 2009-04-20

Abstract

The utility model relates to a transfusion device, belonging to a medical machine. Compared with a common transfusion device, innovative structure design makes the transfusion device able not only to control transfusion speed more accurately but also to newly correct and demarcate the scale of dropping speed according to different conditions at any time. The utility model can solve the problem that through a common transfusion device, a patient's transfusion speed is not easily controlled in medical practice, and in addition, no expensive and complicated infusion pump needs to be additionally arranged, which is economical and practical. The utility model can be used conveniently.

Description

The new medical precision infusion set

This utility model is a kind of precision infusion set, belongs to medical mechanical domain.

In curative activity, be very important treatment measure through venous transfusion.Under a lot of situations, such as for old man, children's, cardiac insufficiency and other critical patients, and when lasting some specific drugs of intravenous drip, all need the strict transfusion speed of controlling.At this moment, traditional general infusion set often can not reach requirement well.Various precision transfusion pumps of Shi Yonging clinically, though the degree of accuracy height costs an arm and a leg, complicated operation is difficult to popularize; Some precision infusion sets that use at present also exist precision on the low side in addition, and range of accommodation is narrow, have only single scale shortcoming such as can not according to circumstances calibrate at any time, can not the clinical needs of fine adaptation.

The purpose of this utility model is a kind of novel transfusion device of design, its Flow-rate adjustment is more accurate, scope is wideer, and can be with the variation of (comprising liquid height, viscosity and puncture needle diameter etc.) of transfusion condition, at any time proofread and correct again and the calibrational capacity scale, thereby satisfy to a greater extent in the curative activity controlling the needs of transfusion speed.Because it is economical and practical, easy to use, can substitute the function of infusion pump to a certain extent simultaneously.

The precision infusion set of this utility model design is compared with general infusion set: traditional transfusion device drips kettle (murphy ' s dropper) and is separated into the two parts that communicate, liquid at first splashes into first during transfusion, it has accurate containing mark, drip full back liquid and enter second portion, its capacity is greater than first; Have the high-precision flow control valve in the infusion pipeline, it is made up of shell and spool two parts, there is liquid to flow into and tap hole on the shell, its cylindrical form interior surface and spool face closely cooperate, have the twice annular water tank on the spool face, the position respectively with shell on inflow, the tap hole correspondence communicates, communicate with each other through UNICOM's groove between two tanks, wherein one tank width is more than or equal to the liquid inflow port diameter, sectional area remains identical, the descending even variation of another road tank sectional area is to zero, so shell cooperates with spool, just form from ostium through the twice tank again to the complete path of tap hole, produce small variation with spool rotational path sectional area, thus the fine adjustment fluid flow, and flow scale can be marked in the side or the end face of valve, standby graduated disc can repeat to be pasted on the fixed position at any time, prepares against calibrational capacity scale again.

The precision infusion set of this utility model design provides generally speaking (certain transfusion height, certain puncture needle model), the flow scale dish sticker during infusion different liquids (glucose solution, normal saline etc.) in use in advance.If the transfusion condition changes, the standby graduated disc of can exchangining cards containing all personal details and become sworn brothers has the scale of marking proportionality coefficient above.Be threaded to the baseline of scale graduation with spool this moment, again that the liquid pouring in the murphy ' s dropper first is clean, and according to the containing mark in the kettle, the liquid in the manual measurement certain hour splashes into volume, and be converted into milliliter and per hour mark on graduated disc.The demarcation of graduated disc is finished like this, just accurate controlling liquid flow.For reducing error, can mark several graduation marks more.

The advantage of the precision infusion set of this utility model design is:

1. flow control accuracy is higher, and range of accommodation is wideer.Well-designed flow control valve, spool has double-deck sink structure, the variation of tank sectional area almost can be expanded on the whole circumference to be finished, when therefore rotating with spool, have only 1/2nd circular arc tanks than some transfusion devices, Moving Unit is littler apart from the area change amount that produces, and correspondingly Flow-rate adjustment is also just more accurate, graduated disc strengthens, and range of accommodation is wideer.

2. can monitor drip velocity, calibrational capacity scale again at any time.A present major defect of some precision infusion sets that use clinically is exactly can not be according to different situations, again the calibrational capacity scale.Many times, can't regulate transfusion speed like this, and it is also accurately difficult to measure a speed with traditional several dripping method according to scale.This transfusion device relies on the graduated murphy ' s dropper that has of innovative design, replaces the number dripping method to measure transfusion speed by accurate mensuration volume change, thereby can be at any time by aforementioned using method monitoring drip velocity, accurately calibrational capacity scale.

3. economical and practical, easy and simple to handle, reduce medical expenses.The precision infusion set of this utility model design can substitute the function of infusion pump to a certain extent, thereby reduce relevant high cost, and operating process is also simple and practical.

Shape, the outward appearance of each parts of precision infusion set of this utility model design can also be adjusted accordingly according to the needs of production and processing and use.

Fig. 1 is the structural representation of the medical precision infusion set of this utility model design.

Fig. 2 is the structural representation that 3 transfusion devices drip kettle among Fig. 1.

Fig. 3 is the structural representation of 4 flow control valves among Fig. 1.

Fig. 4 is the another kind of structural representation of 4 flow control valves among Fig. 1.

Need to prove that institute's indexing does not mark by actual position in each sketch map for diagram makes things convenient for.

In conjunction with specific embodiments the embodiment and the effect of the medical precision infusion set of this utility model design is described further with reference to the accompanying drawings below.

Embodiment

Transfusion device as shown in Figure 1 comprises exhaustor 1 and tube for transfusion 2, and puncture needle 5 and 6 is used to the medicine bottle that punctures, and communicates with 1 and 2 respectively.Also can make the two-chamber puncture needle with 5 and 6, realize that 1 and 2 two path is integrated.During use, liquid enters transfusion device through tube for transfusion 2 and drips kettle 3 (murphy ' s dropper); In conjunction with shown in Figure 2, because the effect of catheter 8, liquid at first enters the I of first, and it has accurate containing mark 9, cross demarcation strip 10 tops after fluid drips is full, enter second portion II, liquid level maintains waterline below 11, makes volume on the waterline all the time greater than the volume of I, when needs are measured transfusion speed, pour liquid in the I into II, accurately measure the liquid capacity that splashes in the certain hour in the I and get final product, liquid leaves 3 just can enter flow control valve 4 along tube for transfusion; Again in conjunction with shown in Figure 3, liquid can enter the tank 16 that sectional area evenly reduces by wide tank 14 and UNICOM's groove 15 through inflow entrance 12, after leave 4 through tap hole 13 again, in this process, shell III should closely cooperate with spool IV, liquid is flowed by projected route and do not leak, rotation by IV, 16 sectional area changes regulates flow, scale 21 on the graduated disc 20 is used to indicate flow with markings 19,17 and 18 is to be used to limit excessively two projectioies of rotation of spool, the 22nd, and the fixed signal of stickup graduated disc gummed paper; Flow control valve operation principle shown in Figure 4 is same as shown in Figure 3, has just changed the contour structures and the position of graduated disc 23, scale 25, markings 24, graduated disc stickup sign 26 etc.; Tube for transfusion is terminal to be connected with the venous patient puncture needle by joint 7, constitutes complete transfusion path.This transfusion device is designed to disposable use.

Claims

A kind of new medical precision infusion set, compare with general infusion set, it is characterized in that: traditional transfusion device drips kettle (murphy ' s dropper) and is separated into the two parts that communicate, liquid at first splashes into first during transfusion, it has accurate containing mark, drip full back liquid and enter second portion, its capacity is greater than first; Have the high-precision flow control valve in the infusion pipeline, it is made up of shell and spool two parts, there is liquid to flow into and tap hole on the shell, its cylindrical form interior surface and spool face closely cooperate, have the twice annular water tank on the spool face, the position respectively with shell on inflow, the tap hole correspondence communicates, communicate with each other through UNICOM's groove between two tanks, wherein one tank width is more than or equal to the liquid inflow port diameter, sectional area remains identical, the descending even variation of another road tank sectional area is to zero, so shell cooperates with spool, just form from ostium through the twice tank again to the complete path of tap hole, produce small variation with spool rotational path sectional area, thus the fine adjustment fluid flow, and flow scale can be marked in the side or the end face of valve, standby graduated disc can repeat to be pasted on the fixed position at any time, prepares against calibrational capacity scale again.