CN2673417Y

CN2673417Y - Transfusion self temperature limiting heater

Info

Publication number: CN2673417Y
Application number: CN 200320129599
Authority: CN
Inventors: 翟慎良; 杨明; 史航; 杨建刚; 蒲忠杰
Original assignee: Lepu Medicql Technology Beijing Co ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2003-12-24
Filing date: 2003-12-24
Publication date: 2005-01-26
Anticipated expiration: 2013-12-24

Abstract

The utility model provides a transfusion self temperature limiting heater, which is composed of a self temperature limiting electrical heating band, a heat conduction aluminum core and a plastic outer shell; the self temperature limiting electrical heating band is provided with two parallel metal conducting wires which are coated in conducting polymers, and the outer surfaces of the metal conducting wires are respectively provided with insulating protective layers; the self temperature limiting electrical heating band is arranged in the groove of a heat conduction aluminum core whose cross-section takes a shape that the upper part is provided with an opening groove and the lower part is provided with a left supporting leg and a right supporting leg; the aluminum core is arranged in the plastic outer shell, and is clamped into integration by the left part and the right part of the outer shell; the inner cavities of the left part and the right part of the outer shell are respectively provided with two ribbed plates inwardly extending out; the aluminum core and the electrical heating band are clamped and fixed by the two ribbed slab plates; the electrical heating band is externally connected with an electric plug. The transfusion self temperature limiting heater achieves the low-temperature rapid start, the homogeneous temperature and the automatic regulation of the temperature change; the human body feels comparatively comfortable when the liquid is heated up to a certain temperature to be transfused to the human body; the transfusion self temperature limiting heater has convenient operation and long service life.

Description

The blood transfusion and infusion self-limiting heater temperature

Technical field

This utility model relates to medical device.

Background technology

Cold or patient have a high fever etc. and to need under the situation of transfusion in season, because transfusion is big with the temperature difference of blood of human body temperature, cause that patient body feels cold, spirit is shunk, and cause multiple complications such as vasoconstriction, joint aches, stomachache.At the problems referred to above, my company has designed the blood transfusion and infusion self-limiting heater temperature.

Summary of the invention

The purpose of this utility model provides a kind of blood transfusion and infusion self-limiting heater temperature, realizes that started quickly at low temperature, temperature are even, variations in temperature is regulated automatically, and liquid is warmed up to uniform temperature, and to be defeated by human body sensory more suitable, easy to use, long service life.

The purpose of this utility model is achieved in that

A kind of blood transfusion and infusion self-limiting heater temperature, it has self-temperature-limiting heating strip, conduction of heat aluminum core and cabinet three parts;

Self-temperature-limiting heating strip has two parallel metal wire, is coated on respectively in the conducting polymer, and its outer surface respectively has the insulation sheath; This self-temperature-limiting heating strip is contained in the groove of a conduction of heat aluminum core, the cross section of this aluminum core is top open groove, the shape of left and right supporting leg is arranged at the bottom, this aluminum core is contained in the cabinet, by the left and right two halves engaging of this shell is one, this left and right two halves shell inner cavity respectively has the twice gusset that inwardly stretches out, and this two roads gusset clamps aluminum core and ribbon heater fixing, the external plug in this ribbon heater.

The material of conducting polymer is the material that can regulate output with the heated object variations in temperature automatically that very high positive temperature coefficient " PTC " characteristic is arranged.

The cross section of described self-temperature-limiting heating strip is Long Circle, and the suitable at interval distance of these two plain conductors lays respectively at oblong two circle centre positions, the upper opening of the groove of described aluminum core, and the shape of cross section of the semicircular in shape of going to the bottom and ribbon heater is corresponding.

The snap-in structure of described aluminum core and shell is: the left and right top gusset of shell respectively has the positioning spigot of indent near the inboard of middle part spacing, the width of this seam beam overall and aluminum core is corresponding, the inside spacing of middle part gusset is corresponding with the width of aluminum core, respectively there is inside seam on left and right arc limit, the bottom of described shell, the overall width of the left and right supporting leg of this seam beam overall and aluminum core is corresponding, height distance between the positioning spigot on the positioning spigot of this top gusset and bottom left and right arc limit is corresponding with the height of aluminum core, and this two seam be able to be with this aluminum core elasticity chucking.

On the described cabinet power supply indicator is housed.

The mating surface of the left and right two halves shell of described cabinet is with the engaged chucking of inside and outside seam.

This utility model has following actively useful effect:

Self-limiting heater temperature of the present utility model, the blood transfusion and infusion liquid heat is limit the temperature control temperature automatically to certain steady temperature, be applied to the heating of hospital's blood transfusion and infusion, this heater is to form with self-temperature-limiting heating strip, conduction of heat aluminum core, cabinet three parts, simple in structure, be easy to assembling, ribbon heater, aluminum core, shell three be fixing not to need any securing member such as bolt, compact conformation practicality, the cabinet insulation, safe in utilization.The self-temperature-limiting heating strip of this infusion heating device conducts heat to the aluminum core, with the tube for transfusion heating, makes liquid be raised to uniform temperature and is defeated by human body again, makes human body sensory more suitable.

Self-temperature-limiting heating strip is made of conducting polymer and two parallel metal wire and insulation sheath, be characterized in that conducting polymer has very high positive temperature coefficient " PTC " characteristic, can regulate output automatically with the heated object variations in temperature, the temperature of volitional check heating, the worry of not having hyperthermia and superheating extremely and burning, and electrical insulating property is good, and the human body blood transfusion and infusion is heated fool proof ideal.

Self-limiting heater temperature can started quickly at low temperature, and temperature is even, all or locally can be accompanied the variations in temperature at heat place because of it and regulate automatically.The self-limiting heater temperature reasonable in design, Maintenance free, the automatization level height, easy to use, long service life.

Description of drawings

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

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is the assembly exploded view of Fig. 2.

The specific embodiment

Accompanying drawing number:

1. self-temperature-limiting heating strip 101. leads 102. leads

103. conducting polymer 104. insulation sheaths

2. conduction of heat aluminum core 201. open groove 202. supporting legs

3. right half shell of a cabinet 3A. left side half shell 3B.

301A.302A. gusset 301B.302B.

gusset

303A, 303B. arc limit

304. seam 305. seams 306. inside and outside seams

4. plug 5. power supply indicators

Please refer to Fig. 1, Fig. 2, this utility model is a kind of blood transfusion and infusion self-limiting heater temperature, and it has self-temperature-limiting heating strip, conduction of heat aluminum core and cabinet three parts;

Self-temperature-limiting heating strip 1 has two parallel metal wire 101,102, is coated on respectively in the conducting polymer 103, and its outer surface respectively has insulation sheath 104; The material of this conducting polymer is the material that can regulate output with the heated object variations in temperature automatically that very high positive temperature coefficient " PTC " characteristic is arranged, and this material is a prior art, buyable.

This patent adopts electric tracing functional material (PTC) to be used for heating of medical blood transfusion and infusion, and this material has automatic limit temperature characteristics, and its principle is when the ribbon heater conducting polymer is caught a cold, and its scintilla shrinks, conducting polymer and heating; After the ribbon heater conducting polymer heated up, its scintilla expanded, and cuts off circuit gradually, and resistance increases, and caloric value reduces.This characteristic is particularly suitable for the liquid continuous constant temperature that is heated to of input human body is entered human body, no matter the speed of infusion rate by the automatic temperature-sensitive temperature control in ribbon heater, is regulated the heat to the input compensating liquid automatically.The PTC conducting polymer adds fire-retardant and insulating protective layer, and the screen layer of outermost layer tinned copper wire braiding plays electromagnetic shielding action, and is fool proof reliable, to human body be heated the not injury of pipeline, medicinal liquid, blood.

This patent is in order to make the higher and homogeneous heating of the thermal efficiency, structural design by ribbon heater, aluminum core and shell, select for use conduct heat and aluminium alloy that thermal storage performance is good as structural material and heat transfer medium, guaranteed the infusion pipeline efficiency of heating surface, aluminium alloy is easy to process to be easy to molding.

This self-temperature-limiting heating strip 1 is contained in the groove of a conduction of heat aluminum core 2, and the cross section of this aluminum core 2 is top open groove 201, and the shape of left and right supporting leg 202 is arranged at the bottom, and ribbon heater and infusion pipeline conduct heat by the aluminum core.

Aluminum core 2 is contained in the cabinet 3, this shell 3 is an one by left and right two

halves

3A, 3B engaging, this left and right two halves shell inner cavity respectively has twice gusset 301A, 302A, 301B, the 302B that inwardly stretches out, and this two roads gusset clamps aluminum core 2 and ribbon heater 1 fixing, the external plug 4 in this ribbon heater.

Please refer to Fig. 2, Fig. 3, the cross section of described self-temperature-limiting heating strip 1 is Long Circle, these two plain conductors 101,102 suitably lay respectively at oblong two circle centre positions apart from 1 at interval, the upper opening of the groove 201 of described aluminum core 2, and the shape of cross section of the semicircular in shape of going to the bottom and ribbon heater 1 is corresponding.

Described aluminum core 2 with the snap-in structure of shell 3 is: the left side of shell 3, upper right quarter gusset 301A, 301B respectively has the positioning spigot 304 of indent near the inboard of middle part spacing, the width of this seam beam overall and aluminum core 2 is corresponding, middle part gusset 302A, the inside spacing of 302B is corresponding with the width of aluminum core 2, the left side, bottom of described shell 3,

right arc limit

303A, 303B respectively has inside seam 305, the left side of this seam beam overall and aluminum core 2, the overall width of right supporting leg 202 is corresponding, this top gusset 301A, the positioning spigot 304 of 301B and a left side, bottom, height distance between the positioning spigot 305 on right arc limit is corresponding with the height of aluminum core 2, this two seam 304,305 be able to be with this aluminum core 2 elasticity chucking.

The mating surface of left and right two halves shell 3A, the 3B of described cabinet 3 is with inside and outside seam 306 engaged chuckings.

On the described cabinet 3 power supply indicator 5 is housed.

This heater is made up of ribbon heater, aluminum core and shell three parts, and is simple in structure, is easy to assembling, and the cabinet design makes ribbon heater, aluminum core, shell three fix any securing members such as not needing bolt, the compact conformation practicality, and cabinet has insulating effect simultaneously.

Claims

1. blood transfusion and infusion self-limiting heater temperature, it is characterized in that: it has self-temperature-limiting heating strip, conduction of heat aluminum core and cabinet three parts;

Self-temperature-limiting heating strip (1) has two parallel metal wire (101), (102), is coated on respectively in the conducting polymer (103), and its outer surface respectively has insulation sheath (104); This self-temperature-limiting heating strip (1) is contained in the groove of a conduction of heat aluminum core (2), the cross section of this aluminum core (2) is top open groove (201), the shape of left and right supporting leg (202) is arranged at the bottom, this aluminum core (2) is contained in the cabinet (3), be one by the left and right two halves engaging of this shell (3), this left and right two halves shell inner cavity respectively has twice gusset (301A), (302A), (301B), (302B) that inwardly stretches out, this two roads gusset clamps aluminum core (2) and ribbon heater (1) fixing, the external plug in this ribbon heater (4).

2. blood transfusion and infusion self-limiting heater temperature as claimed in claim 1 is characterized in that: the material of conducting polymer (103) is the material that can regulate output with the heated object variations in temperature automatically that very high positive temperature coefficient " PTC " characteristic is arranged.

3. blood transfusion and infusion self-limiting heater temperature as claimed in claim 1, it is characterized in that: the cross section of described self-temperature-limiting heating strip (1) is Long Circle, these two plain conductors (101), (102) suitably lay respectively at oblong two circle centre positions apart from (1) at interval, the upper opening of the groove (201) of described aluminum core (2), the shape of cross section of the semicircular in shape of going to the bottom and ribbon heater (1) is corresponding.

4. blood transfusion and infusion self-limiting heater temperature as claimed in claim 1, it is characterized in that: described aluminum core (2) with the snap-in structure of shell (3) is: the left side of shell (3), upper right quarter gusset (301A), (301B) positioning spigot (304) of indent is arranged respectively near the inboard of middle part spacing, the width of this seam beam overall and aluminum core (2) is corresponding, middle part gusset (302A), the width of inside spacing (302B) and aluminum core (2) is corresponding, the left side, bottom of described shell (3), right arc limit (303A), (303B) inside seam (305) is arranged respectively, the left side of this seam beam overall and aluminum core (2), the overall width of right supporting leg (202) is corresponding, this top gusset (301A), a positioning spigot (301B) (304) and a left side, bottom, height distance between the positioning spigot (305) on right arc limit is corresponding with the height of aluminum core (2), this two seam (304), (305) be able to be with this aluminum core (2) elasticity chucking.

5. blood transfusion and infusion self-limiting heater temperature as claimed in claim 1 is characterized in that: the left and right two halves shell (3A) of described cabinet (3), the mating surface of (3B) are with the engaged chucking of inside and outside seam (306).

6. blood transfusion and infusion self-limiting heater temperature as claimed in claim 1 is characterized in that: power supply indicator (5) is housed on the described cabinet (3).