KR200200616Y1 - Warmer for medical treatment - Google Patents

Abstract

The present invention prevents the risk of temperature decrease due to the temperature difference between the two by making the temperature of blood at the time of ring gel sap or transfusion similar to the body temperature, eliminating the pain of patients and improving the rate of ring gel sap or blood in the human body. have. In addition, it is cheaper than conventional products and has a smaller volume and lighter weight. The heat transfer means is formed into a pack, so that blood or sap flows in the most effective and sufficient length, and the heating element itself is maximized by maximizing the contact area with the heating element. It is related to the temperature of the heating element and the temperature of the heating element, and relates to a heating device that is easy to operate and hygienic by being used for one-time use. The present invention provides a method of using a temperature sensor to adjust the temperature using a temperature sensor as well as a resistance to temperature of a PTC heating element.

Description

Medical Heating Device {WARMER FOR MEDICAL TREATMENT}

The present invention relates to a medical heating device, and more specifically, due to the temperature difference between the ringgel fluid or blood transfused when receiving a ringgel injection or transfusion according to the body temperature of the ringgel fluid or blood transfusion The present invention relates to a medical heating device that reduces pain of a patient and prevents a temperature decrease of a patient, and is lighter, cheaper, and easier to operate than a conventional ring gel sap heating device.

Typically, there are two methods of administering useful chemicals to patients: drug use and injection. Injecting the patient is a method such as subcutaneous injection, intramuscular injection, intravenous injection, etc. Among these, intravenous injection is used to inject the injection into the blood vessel for a long time. For example, intravenous injection is used for the supply of blood during surgery or administration of ring gel sap, and this intravenous injection usually uses a drip infusion set.

Ringgel sap is usually stored at low temperature to prevent decay or foreign matters. Blood is usually stored in a refrigerated state to prevent harmful organisms from hatching before blood transfusion. When it is put into human body, it is below 20 ℃. Therefore, if ringgel sap or blood is injected into the human body Since the temperature of the human body is usually 37 ℃, the temperature of the ring gel sap and blood transfusion also rises to the temperature of the human body. In this case, the energy needed to raise the temperature of the ring gel sap or blood to the body temperature is supplied by the patient's elevated metabolic rate. Compared with normal metabolic rate, this thermal load is by no means weak, which can lead to a drop in body temperature and stimulation of the cooling point of the skin, which can result in cold pain or transfusion in patients with cold gel or blood transfusions.

In order to solve this problem, a medical heating apparatus and method for adjusting ring gel sap or blood to a temperature of a human body before ring gel sap or blood is introduced into the human body are disclosed in Korean Patent No. 130926.

According to Korean Patent No. 130926, in order to control the temperature of the ring gel sap, the tube is fixed to the upper part of the panel, and a first cover is mounted on the upper part of the panel, and the first cover is fixed to the vertical member by a hinge, and the hinge is attached. The locking device is installed on the vertical member against the vertical member. The first cover is equipped with a second cover with a heat insulating material on the upper part. By means of heating the tube inside the square barrel.

The medical heating device that needs to be heated to a low temperature of 41.5 ° C. or shorter because the length of the tube inside the square tube is short is to control the desired temperature by raising the short tube to the desired temperature by the heating means inside the square tube. Even if a high temperature heating device is used which is practically difficult and may cause side effects, the device is complicated and expensive due to the use of a more sophisticated electronic control system.

In addition, the heating device using a conventional nickel-chromium (Ni-Cr) heating element is wrapped with a tube of ring gel sap, etc. on the surface of the rounded heating element and covered with a lid to lock it with a locking device every time the tube of the heating element It has the hassle and complicated structure to be wound on the surface, and because it uses nickel-chromium (Ni-Cr) heating element, the volume of the heating device is inevitably large, and its weight is also heavy and weighs more than 2kg. Have.

The present invention has been made to solve the above problems, the object of the present invention is a conventional ring gel solution injection device consisting of ring gel sap, drop chamber, tube and needle or blood, blood filtration tube, tube and needle A transfusion device comprising: a cover on a body having a thread formed by a passage between a screw thread and a ring gel fluid or thread through which blood passes, a connection part connected to a tube connected to a drop chamber, and a connection part connected to a tube connected to a needle A heat transfer means, a cover means including a plate heating element in the upper and lower portions of the cover and seating the heat transfer means in the inner space of the cover to heat the heat transfer means, and a drive switch, a drive light, a cover lock on one side of the cover means. Composed of a button, an up / down button and a temperature display part for controlling the temperature inside the cover means. The control means, the power supply means for supplying power to the control means, and the fixing means for fixing the cover means to the bed to make the temperature of the blood at the time of ring gel sap or blood transfusion similar to the body temperature due to the temperature difference between the two Provides medical heating device that can prevent body temperature drop and eliminate pain of patients Is in.

Another object of the present invention is to reduce the volume, lighter weight, much cheaper, and heat transfer means in the form of a pack (pack) to flow the blood or sap to the most effective and sufficient length by the configuration as described above By maximizing the contact area with the heating element, the temperature of the heating element itself and the temperature of the heating element can be matched, and it is possible to use it for one-time use. We propose a method to control the temperature by using the control method and the temperature dependence of the heating element resistance of the PTC (the heating element resistance coefficient is directly proportional to the temperature) .The PTC is used as a safer heating means because the temperature rises only up to the design temperature. Has many advantages in manufacturing It suggested that there is a purpose.

Figure 1a is a perspective view of a medical heating device according to the present invention.

FIG. 1B is a perspective view when the cover of FIG. 1A is closed

1C is a front sectional view of B-B 'of the medical heating apparatus shown in FIG. 1B.

FIG. 2A is a perspective view of the heat transfer means in FIG. 1

FIG. 2B is a front sectional view of AA ′ of the heat transfer means shown in FIG. 2A

FIG. 3 is a front view of the body 17 with the threads in the uncovered state of the heat transfer means shown in FIG. 2A

Figure 4 is a flow chart illustrating a process of warming the ring gel sap according to the present invention.

5 is a flowchart of control means for controlling the temperature inside the cover means;

<Description of the code | symbol about the principal part of drawing>

10 Heat transfer means 11 threads

12 Passage between threads 13 Drop chamber connection

14 Needle connection H; Heating element with electrode terminal

17 Body with threads 21 Top of cover

22 Lower cover 23 Inner cover

31 Operation switch 32 Operation indicator

33 Cover lock button 34 Up / down buttons

35 Temperature display 40 Power supply

50 fastening means F; filter

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the medical heating device according to the present invention will be described in detail.

Figure 1a is a perspective view showing the overall structure of the medical heating apparatus according to the present invention, the upper cover portion 21 and the lower cover 22 is open and the heat transfer means 10 is installed in the cover inner space 23 in the lower cover to be. Inside the cover upper portion 21 and the cover lower portion 22, as can be seen in Figure 1c, the heating element 63 and the insulator 62, respectively, and the upper and lower surfaces in contact with the heat transfer means 10, the heat transfer material 60 is good The heat transfer means is made in the shape of the upper and lower parts of the cover to transfer heat to the heat transfer means (10) In order to prevent heat loss to the outside by entering the heat insulating material 64 inside the cover of the side that does not contact the heat transfer means (10).

FIG. 1B is a perspective view when the cover of the medical heating apparatus shown in FIG. 1A is closed.

Figure 1c is a front sectional view of B-B 'of the medical heating device shown in Figure 1b.

FIG. 2A is a perspective view of a heat transfer means 10 configured to allow ring gel sap to pass through in the medical heating apparatus shown in FIG. 1, and FIG. 2B is a front sectional view of AA ′ of the heat transfer means 10 shown in FIG. 2A, and FIG. 3. Figure 2a shows a front view of the body 17 having a thread in the cover state of the heat transfer means 10 shown in Figure 2a, respectively.

Looking at the configuration of the medical heating apparatus according to the present invention using the Figure 1a to 3.

In a conventional ring gel sap injection device (not shown in the drawing) consisting of a ring gel bottle, a drop chamber, a tube, and a needle, the ring gel fluid passes through a passage 12 between the threads 11 and has a threaded body ( 17, a heat transfer material H having a heat transfer terminal 15 or a heating element H having an electrode terminal 15 can be laid across the threaded body 17 and has a threaded body 17. The upper and lower portions of the body having connection parts 13 and 14 connected to the tubes, respectively, and the threaded body 17 have a cover and cover the inner space 23 of the cover means as shown in FIG. Settle down.

The screw thread in the threaded body causes the ring gel sap or blood to pass through the long passage 12 between the threads, thereby widening the contact area with the heating element and the contact time. It is to make the temperature of the ring gel sap or blood easily to a desired temperature by heating it low temperature by lengthening. In other words, the feature of the present invention is to maintain the temperature by rapidly heating the conventional tube and to compare the set temperature and the target temperature by measuring the temperature of the tube fixed in the internal space or the outlet temperature (target temperature) of the tube Unlike the device that transmits heat to the ring gel sap inside the tube by supplying it, the problem of thermal inertia correction that may occur in the existing method, the positional problem of the temperature sensor, that is, when installed inside the heating element, separates the heating element and the heating element. It is difficult to do it, and when it is installed outside the heating element, it is difficult to accurately detect the temperature due to the influence of the external environment, for example, wind and room temperature, so that it is difficult to install the temperature sensor. By directly sensing and controlling the temperature of the heating element, the heating element temperature is more than the conventional method which is almost impossible to manufacture. Purpose secured to constant temperature and, while the large surface area and a long passage 12 between the screw thread of the heat-conducting device 10 is mounted inside the heating body over such Ringer fluid is equal to the object temperature it can daneunde injected into the human body.

As described above, it is effectively designed to have a structure having a thread to enable effective heat transfer, and a heat transfer material having a heat transfer terminal or a heating element having an electrode terminal therein, the material of the body having a thread is made of PVC or plastic Medical materials such as these can be used and the volume can be made small. Therefore, the material cost is reduced and the heat transfer means 10 can be manufactured and used for one-time use and can be easily replaced.

Here, the threaded body 17 has a heat-transfer material or a heating element, and when the ring gel sap passes through the passage 12 between the threads, the threads as well as the upper and lower parts 21 and 22 are removed. Since the branches can receive heat from the material or heat generating material H which is well-transmitted in the inner space of the body, the length of the passage between the threads required for the desired temperature (target temperature) is higher than in the case where there is nothing in the inner space. There is an advantage in that the volume of the threaded body becomes smaller as it is reduced.

Meanwhile, the fixing means 50 is for fixing the heating device to a bed or the like while injecting the ring gel sap to the patient, and the body 17 having the thread of the heat transfer means 10 has a connection part as shown in FIG. 13, 14) with a tube 19 having a connector for easy coupling with a tube connected with a needle and a tube 18 with a coupling hole for easy coupling with a tube connected with a drop chamber. made. For example, the coupler of the tube 19 having a coupler is the same as the coupler structure of the so-called butterfly needle on the market.

In addition, a filter (F) for filtering bubbles generated during heating is provided on one side of the tube (18) disposed between the connector (13) of the heat transfer means and the needle.

FIG. 4 is a flowchart illustrating a method for heating ring gel sap or blood passing through a ring gel sap heating apparatus according to the above embodiment, which will be described in detail below.

The target temperature is set by the up / down button 34 described above, and the set temperature is displayed on the temperature display part 35. Next, when the cover means is closed (S110) and the power is turned on, a predetermined power suitable for the set temperature is supplied (S130). Next, the control means is a heating element Detects the temperature (S140) and compares the heating element temperature with the target temperature (S150) to reduce the power when the temperature of the heating element is greater than the target temperature (S160), on the contrary, increases the power if the temperature of the heating element is smaller than the target temperature to cover The temperature of the heating element inside the means is kept constant at the target temperature, so that the fluid entering through the connector 14 of the heat transfer means passes through the passage 12 between the threads 12 and the outlet 13 of the heat transfer means connected to the needle. When it comes out, the temperature of the ring gel sap or blood is the same as the target temperature and is put into the human body.

When the driving switch 31 is turned on by connecting the power supply 40 of the ring gel sap heater of the present invention, the driving indicator 32 is always turned on while the driving switch is turned on, and the upper cover 21 and the lower cover 22 are turned on. The drive switch 31 can be turned on only when the door is closed, and the drive switch 33 is configured to be turned off when the cover is opened to eliminate the risk of a short circuit when the cover is opened. Therefore, after the power is connected, the cover is closed and the driving switch 31 is turned on, and the driving indicator 32 lights up, and when the user sets the desired temperature with the up / down button 34, the temperature display part 35 The desired temperature (target temperature) is displayed, and when the ring gel sap or blood passes through the heat transfer means 10, the ring gel sap or the blood is heated to the temperature displayed by the temperature display part 35. When the tube connected to the drop chamber and the tube connected to the needle are connected to the connecting portions 13 and 14, respectively, the ring gel sap or blood flows through the tube through the drop chamber, and the liquid has a thread having a thread of heat transfer means (17). Long and warm surface area between the threads of the) through the passage 12, the low temperature is warmed to the target temperature and flows into the tube attached to the needle is finally injected into the human body through the needle.

5 is a flowchart illustrating a method for controlling the heating element temperature of the cover means when heating the ring gel sap or blood passing through the medical heating apparatus according to the above embodiment, and the temperature of the heating element including the 62PTC heating element installed in S21. This is a flow chart that shows how to control temperature through temperature sensor and how to control temperature by PTC heating element resistance measurement using PTC heating element characteristics.

First, the temperature control method using the temperature sensor converts the value read from S23 A-MUX to S25 MICOM so that S25 MICOM can read it well through the temperature sensor T installed in S21, and S25 MICOM switches S1 in S20. When the temperature is lower than the target temperature, the amount of power flowing to the heating element is increased, and when the temperature is higher than the target temperature, the heating element is generated according to the set temperature while reducing the amount of power flowing to the heating element.

Another method of temperature control using the PTC heating element is described as follows.

The temperature dependence of the 62PTC heating element (heating element whose resistance coefficient is directly proportional to temperature) in S21 is known at the time of manufacture, and the temperature dependence data or formula of this PTC resistance is input to S25 MICOM in S20. By using the control switch S1 and the resistance Ri that knows the resistance value, you can know the current iPTC flowing in 62PTC at the instantaneous time. If you know the iPTC, you can know the resistance value of the 62PTC heating element of S21. The PTC data or the temperature dependence formula shows the temperature of the 62PTC heating element, and when the temperature of this 62PTC heating element is known, the S1 control switch adjusts the amount of power. The temperature control method using the PTC heating element is shown how to heat as much as the table temperature.

In more detail, as in S20, install the S1 control switch controlled by S25 MICOM and a random resistor Ri whose resistance value is already known. Since the value of the resistance Ri of S20 is already known, while the S1 switch is turned off momentarily during operation, the voltage Va of S20, Vb, and the voltage Vc of S21 are set through the S23 A-MUX and S24 A / D converters. It is recognized that the instantaneous current iPIC flowing through the 62PTC heating element through this recognized voltage Va voltage Vb value can be known as iPTC = Vb-Va / Ri by Ohm's law. It can be seen from the resistance value RPTC = Vc-Vb / iPTC. Therefore, S25 MICOM can know the temperature of PTC heating element by the PTC heating element resistance value measured above through temperature dependency data or formula of PTC heating element already inputted. When the temperature of the 62PTC heating element is low, increase the amount of power through the S1 control switch of S20.If the temperature of the 62PTC heating element is higher than the set temperature, reduce the amount of power. It shows how to do it.

In addition, in FIG. 5, 34 is an up-down switch, 31 is a drive switch, and S22 represents a driving power device for driving MICOM.

As described above, according to the medical heating device of the present invention, by making the temperature of blood at the time of ring gel sap or transfusion similar to the body temperature, It can prevent the lowering of the body temperature, eliminate the pain of the patient and improve the speed of infusion of the ringgel fluid and blood in the human body.

In addition, the volume can be reduced compared to the conventional heating device, the weight is light, and the low price heat transfer means can be used to simplify the operation.The plate heating element including the PTC makes the product lighter and uses the PTC heating element. In this case, it is possible to reduce the risk of overheating due to the heating element characteristic that rises only to a certain temperature, and by controlling the temperature using the characteristic of the PTC heating element, the temperature can be controlled without a temperature sensor, thereby reducing the manufacturing cost and simplifying the manufacturing process. When more accurate temperature control is required, there is an advantage of simultaneous temperature control using PTC heating element and temperature sensor.

Claims (11)

A body having a thread, a passage between the thread through which ring gel sap or blood passes, a connecting portion disposed at one end of the body and connected to a drop chamber, and a connecting portion disposed at the other end of the body and connected to a needle; Heat transfer means consisting of a cover for covering the body, A cover means including a heating element and an insulator in an upper portion and a lower portion of the cover, the cover means for seating the heat transfer means in the inner space of the cover to heat the heat transfer means; Control means for controlling the temperature inside the cover means is composed of a drive switch, a drive indicator, a cover lock button, an up / down button and a temperature display on one side of the cover means; Medical heating apparatus comprising a power supply means for supplying power to the control means. The medical heating apparatus according to claim 1, wherein fixing means for fixing the cover means to a bed is provided at one side of the cover means. The medical heating apparatus according to claim 1, wherein the heat transfer means has a heat transfer material having a heat transfer terminal inserted into a threaded body. The medical heating apparatus according to claim 1, wherein the heat transfer means has a heating element having an electrode terminal inserted into a threaded body. The medical heating apparatus according to claim 1, wherein a filter for filtering bubbles generated during heating is installed at one side of the tube disposed between the connector of the heat transfer means and the needle. The medical heating apparatus according to claim 1, wherein the power supply unit does not supply power to the heating element when the cover is opened. The medical heating apparatus according to claim 1, wherein the power supply unit supplies power to the heating element only when the driving switch is turned on even when the cover is closed. The medical heating apparatus according to claim 1, wherein the cover means is insulated with a heat insulating material. The medical heating apparatus according to claim 1, wherein the heating element comprises a PTC heating element. The method of claim 1, wherein the control means has a resistance characteristic according to the temperature of the PTC heating element. Medical heating device comprising the function of controlling the temperature by melting. The medical heating apparatus according to claim 1, wherein said control means includes a function of controlling a temperature using a temperature sensor.