CN2555037Y

CN2555037Y - Transfusion speed regulator

Info

Publication number: CN2555037Y
Application number: CN 02242607
Authority: CN
Inventors: 张亚平; 张亚根
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-19
Filing date: 2002-07-19
Publication date: 2003-06-11
Anticipated expiration: 2012-07-19

Abstract

The utility model relates to an infusion speed regulator, and consists of a shell 1, a rubber sealing ring 2, and a regulating ring 3. An input pipe 1A and an output pipe 1B, and are arranged on two ends of the shell 1, are respectively communicated with small holes 2a and 2b, which are arranged on the rubber sealing ring. Annular antiseepage ridges 3A and 3B and a gradient groove 3C are arranged on the contact surface of the regulating ring 3 and the sealing ring 2. The gradient groove 3C are arranged opposite to the small holes 2a and 2b to form a liquid channel. The rotary regulating ring 3 can change the section of the liquid channel between the small holes 2a and 2b to regulate the infusion speed. The utility model has the advantages of simple structure, convenient operation, speed regulation, accuracy, low price and excellent stability.

Description

A kind of transfusion speed actuator

This utility model relates to a kind of transfusion speed actuator, especially for the transfusion speed actuator in vein liquid make-up or liquid undergoing treatment process.

At present, the clinical both at home and abroad transfusion control method of generally using is that it is long-pending that shifting roller changes pipeline section at roller actuator of transfusion device pipeline outside suit, to regulate the infusion liquid drop speed; But need artificial counting and regulate speed could be harmonized (especially difficult when being lower than 10 droplets/minute) repeatedly; In recent years, infusion pump has a small amount of use, is that representative (accounts for 2～3% of front three hospital berth with U.S. Sigma 5000 types, IVAC 560 type peristaltic pumps, basic hospital is rare), it is by microcomputerized control machinery wriggling row, and the extruding infusion tube moves liquid, and control accurately, range of accommodation is wide, but cost an arm and a leg (separate unit 0.8～1.8 ten thousand yuan) need special-purpose infusion tube could assurance speed accurate, and dedicated pipe is than transfusion device price height, the whole cost height does not benefit universal; The rotary vane type actuator is abroad arranged recently, is at the corresponding tube for transfusion of the blade upper and lower that the crack of gradually cracking is arranged, and rotates disc, changes the slit between the infusion tube up and down, regulates liquid droping speed, is connected in series use with transfusion device, regulates intuitively, is subjected to gravity effect; Because of its price is more expensive, increase patient's burden, present domestic hospital does not use, and is only on probation in certain hospital's experiment, is unfavorable for clinical popularization and use.

The purpose of this utility model just provides a kind of transfusion drip speed hand regulator, for the deficiency that overcomes in above-mentioned all methods designs, can satisfy in the liquid undergoing treatment needs of regulating, controlling transfusion speed.

This utility model is to be made of housing, sealing rubber ring, adjusting ring three; Sealing rubber ring and adjusting ring constitute transfusion speed regulation and control part, and the adjusting ring outside is the protective cover plate and the flow indicating graduation district of actuator, and a side of housing has liquid input tube and outlet tube, and their mutual group become transfusion speed actuator of the present utility model.

The purpose of this utility model is to realize like this, minute opening plane at the input pipe and the outlet tube other end, parallel placement one rubber ring, correspondingly with minute opening coincidence place have two apertures, be respectively input aperture and output aperture, above closely cover adjusting ring, the contact surface of adjusting ring is shaped on annular gradual change groove, rotation along with adjusting ring, the level and smooth change can be taken place corresponding to the slot cross-section of input aperture and output aperture is long-pending, thereby reach adjusting, finish the control and the adjusting of transfusion speed the fluid flow of this groove of process.

This utility model novel structure, science adopt rotation adjusting ring gradual change groove, change the circulation road sectional area, reach the purpose of adjusting, control transfusion speed; Actuator is regulated level and smooth, and indication is directly perceived, and adjusting repeatedly need not count; Actuator integral body is only used three parts, has simple in structure, easy to use, velocity-stabilization, cheap characteristics; Transfusion speed is regulated simplified, lighten one's labor, save time, raise the efficiency, reduce medical treatment cost and patient medical expense expenditure.

Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated.

Fig. 1 is the overall appearance sketch map of transfusion speed actuator of the present utility model;

Fig. 2 is a transfusion speed governor body structural representation of the present utility model;

Fig. 3 is transfusion speed actuator adjusting ring partial sectional view of the present utility model and ring structure signal;

Fig. 4 is the partial sectional view that transfusion speed actuator of the present utility model is crossed the inflow and outflow pipe;

By shown in Figure 1, this utility model is made up of shell 1, adjusting ring 2, at the two ends of shell 1, liquid input tube 1A and liquid output pipe 1B is arranged respectively, and liquid enters actuator by inflow pipe 1A and flowed out by effuser 1B after overregulating; The marker arrow 1C that one indicating liquid infusion velocity is arranged in the outside of housing 1 is with the corresponding indicating liquid infusion velocity of speed labelling 3D of adjusting ring 3 outsides.

By accompanying drawing 2 as can be known, in a side of governor body 1 liquid inflow pipe 1A and liquid effuser 1B are arranged, they are opened in the housing 1a and 1b place among the cannelure 1e respectively; Circular trough 1e is used for laying rubber seal 2, and the axle 1d that goes in ring is in order to be connected and fixed with adjusting ring 3.Fig. 3 has provided the structural representation of sealing ring 2 and adjusting ring 3, and sealing rubber ring 2 is embedded among the cannelure 1e of housing 1, a side of sealing rubber ring 2 be shaped on aperture 2a and 2b and with housing 1 in aperture 1a and 1b is corresponding communicates; Adjusting ring 3 is sleeved on centre bore 3E on the annular shaft 1d of housing 1, and annular shaft 1d is melted the flange method with heat, and adjusting ring 3 is closely contacted, is connected with housing 1 with rubber seal 2; At the outer surface of adjusting ring 3, be shaped on different graduation marks and digital 3D, corresponding with the arrow 1C of housing 1 outer surface, indicate different infusion velocities or flow respectively; Contact surface at adjusting ring 3 and sealing ring 2 is shaped on annular antiseepage ridge 3A and 3B, can prevent intravenous extravasation and prevent that dust from entering; (according to Flow-rate adjustment needs: flow velocity V=0～Max.ml/h), have the cannelure 3C of gradual change sectional area in the centre of antiseepage ridge 3A and 3B, it is corresponding up and down with aperture 2a and 2b on the rubber seal 2, and the formation liquid flowing channel; As shown in Figure 4, liquid enters actuator by inflow pipe 1A and finishes adjusting circulation overall process through aperture 1a, rubber ring aperture 2a, adjusting ring gradual change groove 3C, rubber ring aperture 2b, housing aperture 1b, effuser 1B; Rotation adjusting ring 3 can change the circulation road sectional area between aperture 2a and the 2b, thereby reaches the purpose that changes flow rate of liquid, control transfusion drip speed.

Owing to adopt Precision Machining, produce in batches, only need the flow of a structure is calculated, and flow, speed is engraved on the adjustable plate surface, in the use,, just can make things convenient for the degree that needs that is controlled at of rapidly transfusion speed being regulated as long as with the relevant position of adjusting knob push-and-pull to the speed sign.

In the use, can be with this utility model transfusion speed actuator, with clinical in the general infusion set use of connecting, liquid input tube 1A is connected with transfusion device tube for transfusion lower end filter, outlet tube 1B is connected with transfusion device entry needle joint, according to the clinical transfusion rate request, with the adjusting ring 3 upper reaches speed digital 3D rotation direction indication speed sign arrow 1C correspondence of this actuator, it is no abnormal to observe a kettle and patient, has both finished the adjusting and the control of transfusion speed.

In adjusting ring 3, be shaped on gradual change groove 3C because this utility model adopts, adjust the mode of liquid flowing channel sectional area with parallel rotation and control transfusion speed, make it can be used for dripping in the velocity modulation joint process of multiple transfusion device.

Because this utility model adopts precise machining process, make the concordance and the good reproducibility of adjusting, can avoid the roller actuator big because of the regulating error that factors vary such as ambient temperature, tube for transfusion intensity, manual adjustment pressure cause, need repeatedly regulate, revise (numeration, measurement) could be with the problem of speed controlling in the scope of needs, has the control accuracy height, high conformity, the influence factor is few, regulates characteristics rapid, accurate, good stability.

Because this utility model novel structure science, compact (only using three parts), have simple in structure, volume is little, (less than 5 grams) in light weight, cheap, characteristics that adaptability is good, can solve basic hospital and need accurately control transfusion speed and the unable problem of purchasing computer controlled infusion pump.Have certain social and economic benefit.

Claims

1, a kind of transfusion speed actuator is made up of housing 1, rubber seal 2, adjusting ring 3; It is characterized in that housing 1 outer Monday of side has liquid input tube 1A and liquid output pipe 1B, the two relatively and be opened on 1a and 1b among the housing cannelure 1C respectively, respectively with housing 1 cannelure 1C in rubber seal 2 on the aperture 2a, the 2b that offer be communicated with; Contact surface at adjusting ring 3 and sealing ring 2 is shaped on concentric annular antiseepage ridge 3A, and 3B has gradual change regulating tank 3C at two antiseepage ridges middle part, and its sectional area is linear change, (according to flow velocity V=0～Max.m1/h, makes slot cross-section amass S=S ₀～S.max), groove 3C closely contacts with rubber seal 2 surfaces and aperture 2a, 2b, constitutes liquid flowing channel; At housing 1 outer surface one sign arrow 1C is arranged, be printed on the scale of different in flow rate, the corresponding indication of digital 3D control rate with the circumferential outer surface of adjusting ring 3; Hot pressing closely is connected between adjusting ring 3 and the housing 1.

2, transfusion speed actuator according to claim 1 is characterized in that, actuator is connected in series use with input pipe 1a and outlet tube 1b with general infusion set, alternative roller type speed regulator.Thereby regulate transfusion speed and be by rotation adjusting ring 3, change by the flow through method realization of fluid flow of aperture 2a and 2b of the sectional area change of aperture 2a that offers on the gradual change regulating tank 3C of adjusting ring 3 bottom surfaces and the rubber seal 2 and liquid flowing channel that 2b constitutes.