CN2855437Y

CN2855437Y - Drying transfusion heater

Info

Publication number: CN2855437Y
Application number: CN 200520077107
Authority: CN
Inventors: 朱荣荣; 朱虹
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-04
Filing date: 2005-11-04
Publication date: 2007-01-10
Anticipated expiration: 2015-11-04

Abstract

The utility model relates to a dry transfusion warmer, belonging to the technical field of medical appliance, which comprises a box body which can be opened and closed, a heater arranged in the box body, a heat transfer plate adjacent to the heater, a transfusion tube groove running through the heat transfer plate, and an electrode electrically connected with the heater in the box body. Wherein, the heater is a printed circuit heating plate with a by-pass conductive circuitry. The unique heating element is made with simple technique and low cost, and the temperature distribution can be quite even after the heating element is electrified because the resistance value and distribution density of the conductive circuitry can be designed according to requirements, meanwhile the temperature control is very convenient because of the small thermal inertia of the heating element; additionally, the printed circuit heating plate can keep good contact with the heat transfer plate and ensure the heat transfer effect because of the solidity and flatness.

Description

The dry type infusion warmer

Technical field

This utility model relates to a kind of transfusion assistive device, and especially a kind of infusion warmer belongs to technical field of medical instruments.

Background technology

Venous transfusion is the medical procedure of using always.In order to eliminate the patient because of the low discomfort that produces of transfusion temperature, applicant process on the prior art basis is improved, the patent application that name is called " infusion warmer " has been proposed, but this warmer comprises hinged folding box body, be placed in the intravital heater element of box, press close to the heat transfer plate of heater element, it is characterized in that: have the containing tube for transfusion groove that runs through the box body two ends on the described heat transfer plate; In the upper and lower box body battery lead plate is housed, the electrode on the described battery lead plate can be fitted mutually, and is electrically connected with the intravital heater element of upper and lower box respectively.Like this, tube for transfusion is embedded in the groove, closed box and peg graft to go up power supply after, tube for transfusion just is clamped in the upper and lower heat transfer plate of box body steadily, by upper and lower simultaneously electric heater element is heated, make the liquid of output have the temperature approaching with body temperature.Yet the heater element that above warmer adopts is infrared film electric heating cloth, and stickiness is not ideal enough, and temperature control is also convenient inadequately.

Summary of the invention

The purpose of this utility model is: at the weak point that above prior art exists, propose a kind of temperature evenly, regulate and control dry type infusion warmer easily.

In order to reach above purpose, but dry type infusion warmer of the present utility model comprises the folding box body, be placed in the intravital heater element of box, press close to heater element heat transfer plate, run through heat transfer plate the tube for transfusion groove, with the electrode that box body internal heating device is electrically connected, it is characterized in that: described heater element is for being shaped on circuitous print conductive circuits circuit hot plate.

The heating element heater processing technology of this original creation is simple, cost economy, and owing to the resistance and the distribution density of conducting wire can design as required, therefore the Temperature Distribution after the energising can be very even, simultaneously, its thermal inertia is very little, so temperature adjusting is very convenient.In addition, because the printed circuit hot plate is solid smooth, therefore can keeps well contacting, thereby guarantee heat-transfer effect with heat transfer plate.

During use, tube for transfusion is embedded in the groove of heat transfer plate, closed box and peg graft to go up power supply after, tube for transfusion is clamped in the heat transfer plate of box body, is printed the heat that the circuit hot plate sends and heats, and makes the liquid of output have the temperature approaching with body temperature.

It is that described heat transfer plate adopts silicone rubber to make that this utility model further improves, and top groove presents the circuitous shape of S shape.Can make tube for transfusion that the longer length of heating is arranged in box body like this, thus even, when liquid droping speed very fast also fully heating transfusion lower in ambient temperature.

This utility model further improve be the circuitous groove of described S shape have short slot into and out of near the section, thereby higher in ambient temperature, when liquid droping speed is slow, tube for transfusion can be embedded on the heat transfer plate along short slot, suitably shorten the length of heating.

Description of drawings

Below in conjunction with accompanying drawing this utility model is further described.

Fig. 1 is the structural representation of an embodiment of this utility model.

Fig. 2 is the vertical view of Fig. 1 embodiment lower box body.

Fig. 3 is as the printed circuit hot plate sketch map of heater element among Fig. 1 embodiment.

Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D are Fig. 1 embodiment control circuit schematic diagram.

The specific embodiment

Embodiment one

The dry type infusion warmer of present embodiment as depicted in figs. 1 and 2, upper cartridge body 1 ' is connected by folding hinge 2 with lower box body 1, constitutes box body component.Heater element is upper and lower two and is shaped on circuitous print conductive circuits circuit hot plate 3 ', 3, be placed in respectively in the upper and lower box body, press close to upper and lower printed circuit hot plate 3 ', 3 the upper and lower heat transfer plate 4 ', 4 of silicone rubber is fixed in the upper and lower box body, can fit mutually.Lower box body 2 be equipped with can external power supply socket 6, socket 6 is electrically connected with following printed circuit hot plate 3 by control circuit, have the containing tube for transfusion groove 7 that runs through lower box body 1 two ends on the following heat transfer plate 4, this groove presents the circuitous shape of S shape, into and out of having short slot 8 near the section.The upper and lower electrode 9 ', 9 that upper and lower box body 1 ', an end of 1 are fixed with respectively on upper and lower battery lead plate 10 ', 10, two battery lead plates is electrically connected the contact of can fitting mutually with the intravital upper and lower printed circuit hot plate 3 ', 3 of box when box body is closed.

The concrete structure of present embodiment printed circuit hot plate as shown in Figure 3, gabarit and box body inner chamber match, the full of twists and turns conducting wire of gathering above.Its processing technology is simple, cost economy, and the uniformity of temperature profile after the energising is saved electric energy, and the plate face is solid smooth, can keep well contacting with heat transfer plate.

The control circuit of present embodiment is shown in Fig. 4 A, B, C, D, and the U5 in Fig. 4 C circuit is the temperature sensor that is placed in the heating region middle part, and its signal output part connects temperature signal input 17 feet of microprocessor chip U1.The warning outfan 8 feet device SPK taking alarm of this microprocessor chip U1, the corresponding port of the display driver chip U4 in

demonstration outfan

14,15, the 16 foot map interlinking 4A circuit, the outfan of this driving chip meets the charactron DS that is placed in the lower box body bottom surface respectively.Control output end 7 feet of this microprocessor chip U1 meet 24VOUT to the printed circuit hot plate by audion Q1, the IC1 as switch control device among Fig. 4 D.

In addition, microprocessor chip U1 periphery also is connected to the X1 crystal oscillating circuit, the K1-K3 keyboard is provided with custom circuits such as circuit, U2 reset circuit, and Fig. 4 B is depicted as power circuit, does not describe in detail one by one.

During use, tube for transfusion is embedded in the groove, ambient temperature is lower, be embedded in when liquid droping speed is very fast in the circuitous groove of S shape; Ambient temperature is higher, when liquid droping speed is slow, be embedded on the heat transfer plate along short slot.Afterwards, closed box, and behind the last power supply of pegging graft, tube for transfusion just is clamped in the upper and lower heat transfer plate of box body steadily, by upper and lower simultaneously the heat that sends of electric printed circuit hot plate is heated, the output liquid that output temperature is suitable satisfies patient's treatment needs.The temperature of heating constantly is transferred to microprocessor by temperature sensor, and then is transferred to display circuit, is intuitively shown by the charactron on the box body.After heating-up temperature reaches setting value, microprocessor will cut off by audion Q1 the printed circuit hot plate will be powered.When heating-up temperature surpasses setting value, microprocessor will send chimes of doom by the SPK of warning circuit.

Experiment showed, the dry type infusion warmer compact conformation of present embodiment, temperature is even, and regulation and control are convenient, and are safe and reliable.

In addition to the implementation, this utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of this utility model requirement.

Claims

1. dry type infusion warmer, but comprise the folding box body, be placed in the intravital heater element of box, press close to heater element heat transfer plate, run through heat transfer plate the tube for transfusion groove, with the electrode that box body internal heating device is electrically connected, it is characterized in that: described heater element is for being shaped on circuitous print conductive circuits circuit hot plate.

2. according to the described dry type infusion warmer of claim 1, it is characterized in that: described heat transfer plate is the silicone rubber heat transfer plate.

3. according to the described dry type infusion warmer of claim 2, it is characterized in that: the groove on the described heat transfer plate presents the circuitous shape of S shape.

4. according to the described dry type infusion warmer of claim 3, it is characterized in that: the circuitous groove of described S shape have short slot into and out of near the section.

5. according to the described dry type infusion warmer of claim 4, it is characterized in that: also comprise control circuit, be placed in the temperature signal input of the temperature sensor signal output termination microprocessor chip of heating region in the described control circuit, the control output end of described microprocessor chip connects the printed circuit hot plate by switch control device.

6. according to the described dry type infusion warmer of claim 5, it is characterized in that: the demonstration outfan of described microprocessor chip connects the charactron that is placed in box body by display driver chip.