JP2006271953A - Warming device of tube for air sending or solution sending - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warming device of simple configuration which warms a tube for air sending which sends air into the human body and can maintain the temperature stably over a prolonged period of time. <P>SOLUTION: A warming device for warming an air sending tube is fixed on the leading edge of an air-pipe which sends air or oxygen-enriched or high-humidity air in the warming condition through an oral cavity or a nasal cavity into the human body detachably. The warming device includes a heating tape where a filmy conductive wire is formed on a flexible resin tape surface and a resin tube which is arranged around the heating tape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air supply tube for sending air into the human body through the oral cavity or nasal cavity and a liquid supply tube for sending blood or a chemical solution into the human body through an injection needle. It relates to warming equipment.

  2. Description of the Related Art Conventionally, devices (typically, artificial respiration devices) that supply air (including oxygen-enriched or humidified air) to a patient's body via the oral cavity or nasal cavity have been used in medical practice. In this case, if cold air is supplied into the patient's body, problems such as discomfort to the patient or a decrease in the patient's body temperature are likely to occur. For this reason, the air supplied to a patient is heated beforehand, and the air in this warming state is supplied to a patient.

  The artificial respiration apparatus includes, for example, a humidifier that humidifies air and an air supply pipe called an exhalation tube connected to the humidifier. An air supply tube called a tracheal tube is detachably attached to the tip of the air supply tube. A part of the distal end side of the air supply tube is inserted into the patient's body through the oral cavity or nasal cavity. Since the air supply tube is in direct contact with the patient, it is removed from the air supply tube and discarded after use for hygienic reasons. Such a tube is also used as a liquid-feeding tube in which an injection needle is attached to one end, and blood or drug solution is fed into the patient's body via the injection needle during blood transfusion or infusion. .

  In Patent Document 1, an intake tube that feeds intake air, a humidifier that humidifies the intake air by supplying water vapor generated by heating water with a heater, and the temperature of the humidified intake air at the outlet of the humidifier are measured. A first temperature sensor that measures the temperature of the humidified intake air that is heated by the intake air heater and the intake air heater that is disposed in the intake tube along the flow direction of the humidified intake air from the outlet of the humidifier And a ventilator with an exhalation tube for delivering exhalation. The artificial respiration apparatus further includes a humidity monitoring unit for the humidified intake air.

  It is known from this document that water droplets adhering to the inspiratory tube of a ventilator may adversely affect the patient, and there is a problem that it takes time to remove the water droplets (drain removal). It is described that these problems can be solved by adjusting the humidity of the humidified intake air in the intake tube using the humidity monitoring unit.

  The end of each of the inhalation and exhalation tubes of the ventilator and one end of the tracheal tube that is inserted into the patient's trachea are connected to a device called a Y-piece. The Y piece is a branching tool for sending humidified inspiration from the inhalation tube to the tracheal tube while sending exhaled air that the patient exhaled to the tracheal tube to the exhalation tube. The heater for heating the intake air has a function of heating the humidified intake air passing through the intake tube so as not to be cooled. Specific examples thereof include a spiral heater and a belt heater disposed on the inner surface of the intake tube. .

  Patent Document 2 discloses a heating element that contains a heating agent that generates heat due to the presence of air, and the heating element that is built in and is sandwiched by the heating element from the outside of a tube through which a drip infusion or the like circulates. A tube warmer is disclosed that includes an openable and closable container that is detachably formed.

In this document, a heating device using an electric device such as an electric heater is already known as a heating element, and such a heating device is expensive because an electric device is used as a heating element, and is normal during a power failure. In addition, the heating device itself is not disposable, and it is said that it has another problem that the inside of the pipe in which the circulating fluid has flowed always needs to be washed every time it is used. . In order to solve such a problem, a tube heater equipped with a heating element that generates heat by contact with oxygen as described above (for example, a known disposable chemical warmer is used) has been developed, and this tube heating is performed. It is said that the vessel is simple and can be heated for a long time.
JP-A-9-234247 JP 2003-135599 A

  By using the artificial respiration apparatus of Patent Document 1, air adjusted to a predetermined temperature and humidity is sent into the tracheal tube. However, for example, if the room temperature is low in winter, the tracheal tube section between the patient and the ventilator is cooled, and cold air is sent into the patient's trachea, causing discomfort to the patient. In extreme cases, the patient's body temperature may decrease, and the physical condition may be deteriorated particularly when the patient is an elderly person or an infant.

  The tube heater of Patent Document 2 is a simple one that can heat a tube through which a drip infusion or the like circulates for a long time. Since this tube heater can use a known chemical warmer as its heating element, it can be discarded together with the tube heater after use. However, there is a problem that the temperature of the heating element is likely to fluctuate and the heating time cannot be obtained after the oxidation of the heating element is completed, so that the use time is limited.

  As described above, an air supply tube (tracheal tube) for sending air into a patient's body, or a liquid supply tube for sending blood or a chemical solution is often discarded after use for hygienic reasons. It is preferable that the heating tool attached to the tube used in this way can be discarded together with the tube after use. Therefore, it is desirable that the heating device has a simple configuration that can be manufactured at low cost, and that the tube can be maintained at a predetermined temperature for a long time.

  An object of the present invention is to heat an air feeding tube that feeds air into the human body via the oral cavity or nasal cavity, and a liquid feeding tube that feeds blood or chemicals into the human body via an injection needle, and adjust the temperature. An object of the present invention is to provide a heating device having a simple configuration that can be stably maintained for a long time.

  The present invention provides heating for heating an air supply tube that is removably attached to the tip of an air supply tube that supplies air or oxygen-enriched or humidified air to the human body through the oral cavity or nasal cavity in a heated state. A heating tool comprising a heat generating tape in which a conductive wire is disposed along a length direction of a flexible resin tape, and a resin cylinder disposed around the heat generating tape. is there.

The preferable aspect of the heating tool for the air supply tube of the present invention is as follows.
(1) A heat generating tape is spirally wound along the inner peripheral surface of the cylinder and is contained in the cylinder.
(2) A temperature detection circuit including a temperature sensor is arranged on the heat generating tape in parallel with the conductive wire. More preferably, a control circuit that is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. Is provided.

  The present invention also includes a heating device that is removably attached to the tip of an air supply tube that sends air or oxygen-enriched or humidified air to the human body through the oral cavity or nasal cavity in a heated state. A heat generating tube, wherein the heating device is disposed in the vicinity of the air supplying tube, and the conductive resin is disposed along the length of the flexible resin tape. There is also an air supply tube with a heating device, characterized in that it is composed of a tape and a resin tubular body that encloses the heat generating tape and is disposed in the air supply tube.

The preferable aspect of the air supply tube with a heating tool of the present invention is as follows.
(1) A heat generating tape is spirally wound along the inner peripheral surface of the cylinder and is contained in the cylinder.
(2) A temperature detection circuit including a temperature sensor is arranged on the heat generating tape in parallel with the conductive wire. More preferably, a control circuit that is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. Is provided.

  The present invention is also a heating tool for heating a liquid feeding tube for feeding blood or a chemical solution into a human body through an injection needle, and is electrically conductive along a length direction of the flexible resin tape. There is also a heating tool including a heat generating tape in which wires are arranged and a resin cylinder disposed around the heat generating tape.

The preferable aspect of the heating tool for liquid feeding tubes of this invention is as follows.
(1) A heat generating tape is spirally wound along the inner peripheral surface of the cylinder and is contained in the cylinder.
(2) A temperature detection circuit including a temperature sensor is arranged on the heat generating tape in parallel with the conductive wire. More preferably, a control circuit that is electrically connected to the conductive wire of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive wire according to the temperature detected by the sensor. Is provided.

  The present invention is also a liquid supply tube in which blood or a chemical solution is sent into a human body through an injection needle and is equipped with a heating device, and the heating device is close to the periphery of the liquid supply tube. A heat-generating tape in which conductive wires are arranged along the length direction of the flexible resin tape, and a resin-made cylindrical body that is included in the liquid-feeding tube and contains the heat-generating tape. There is also a liquid delivery tube with a heating tool characterized by comprising:

The preferable aspect of the liquid feeding tube with a heating tool of the present invention is as follows.
(1) A heat-generating tape is spirally wound along the inner peripheral surface of the cylinder and is contained in the cylinder.
(2) A temperature detection circuit including a temperature sensor is disposed on the heat generating tape in parallel with the conductive wire. More preferably, a control circuit that is electrically connected to the conductive wire of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive wire according to the temperature detected by the sensor. Is provided.

  The heating device of the present invention is an air-feeding tube that feeds air into the human body through the oral cavity or nasal cavity by injecting heat into the human body by applying electric energy to the conductive wire of the heating tape, or injection into the human body. The liquid feeding tube for feeding blood or chemicals through the needle can be heated for a long time. In this heating device, since the heat generating tape is contained in the resin cylinder, the heat generated by the thin film conductive wire is difficult to escape to the outside of the cylinder, and the cylinder contacts the surface of the thin film conductive wire. In order to stabilize the air flow, heat generated by the thin film conductive wire can be stably applied to the air supply tube and the liquid supply tube. For this reason, if the heating tool of this invention is used, the temperature of an air supply tube or a liquid supply tube can be maintained stably.

  Further, the heating device of the present invention has a simple structure composed of a resin cylinder and a heating tape, and its manufacturing cost is low, so that it is discarded together with the air supply tube and the liquid supply tube after use. It is suitable for various uses. For example, the warming device of the present invention is attached to an air supply tube (tracheal tube), air is heated using this to the body of a human (patient), treatment is performed, and air is supplied after the treatment is completed. By discarding the heating tool together with the tube, it is possible to save time and effort to clean or sterilize the heating tool each time it is used, and to perform an extremely hygienic treatment.

  First, an air supply tube with a heating tool of the present invention and a heating tool used therefor will be described with reference to the accompanying drawings. FIG. 1 is a view showing a mode of use of an air supply tube with a heating device of the present invention, FIG. 2 is an exploded perspective view showing a configuration of a heating device 12 shown in FIG. 1, and FIG. FIG. 2 is a partial cross-sectional view showing a configuration of a heating tool 12 shown in FIG. 1.

  An air supply tube 10 with a heating tool shown in FIG. 1 includes an air supply tube 11 and a heating tool 12 disposed around the air supply tube 11. The heating tool 12 includes a heat generating tape 13 in which conductive wires are disposed along a length direction of a flexible resin tape disposed in the vicinity of the air supply tube 11, and the heat generating tape 13. And a resin cylindrical body 14 disposed in the air supply tube 11. The air supply tube 10 with a heating device is detachably attached to, for example, the distal end of an air supply tube 22 provided in the artificial respirator 20.

  The artificial respiration apparatus 20 shown in FIG. 1 includes a humidifier 21 that humidifies air supplied to a human 23 and an air supply pipe 22 that transports the humidified air. A heater is provided inside the air supply pipe 22, and the humidified air generated in the humidifier 21 is heated by the heater. The air supply tube 22 is used to send humidified air into the human body 23 through the oral cavity in a heated state.

  As shown in FIG. 1, one end of the air supply tube 11 is attached to the distal end of the air supply tube 22, and a part on the other end side allows the humidified air generated by the artificial respirator 20 to flow through the human 23. It is inserted into the oral cavity (or nasal cavity) for delivery into the body. For example, the length of the air supply tube 11 is set to about 16 cm, and a portion from the end portion to a length of about 8 cm is inserted into the human body through the oral cavity. The air supply tube is generally called a tracheal tube, and is formed of, for example, a resin material such as fluororesin, polypropylene resin, or silicon resin.

  Next, the structure of the heating tool 12 arrange | positioned around the air supply tube 11 is demonstrated. As shown in FIG. 2 and FIG. 3, the heating tool 12 includes a heat generating tape 13 in which a conductive wire 16 is disposed along a length direction of a flexible resin tape 15, and around the heat generating tape 13. It is comprised from the resin cylinder 14 arrange | positioned. By applying electric energy to the conductive wire 16 to generate heat, the air supply tube 11 can be heated for a long time.

  The cylindrical body 14 is formed of a resin material such as a polyolefin resin such as a polyethylene resin or a polypropylene resin, a vinyl chloride resin, a polyester resin, a polycarbonate resin, or a silicone resin. The cylindrical wall body is preferably transparent so that the visible light transmittance is 60% or more (particularly 80% or more). For example, the tube may be blocked if the patient exhales or vomits while air is being sent into the patient's body by the air supply tube. This is because if the cylinder is transparent, the blockage of the air supply tube can be detected early from the outside of the cylinder.

  The inner diameter of the cylindrical body 14 is preferably not more than three times the outer diameter of the air supply tube 11 in order to place the heat generating tape 13 close to the periphery of the air supply tube 11. As the air supply tube 11, tubes having various outer diameters are selected based on the age, height, weight, etc. of the patient. For example, when the outer diameter of the air supply tube is 3.5 mm, the inner diameter of the cylinder is about 6 mm, and when the outer diameter of the air supply tube is 4 mm, the inner diameter of the cylinder is about 7 mm, or the air supply tube When the inner diameter of the cylinder is 6.5 mm, the inner diameter of the cylindrical body is preferably set to about 9 mm.

  The thickness of the wall of the cylindrical body 14 is preferably in the range of 0.3 to 2 mm. Although depending on the selection of the material of the cylinder, the cylinder can bend flexibly when the thickness of the wall of the cylinder is within the above range. For this reason, even when the air supply tube 11 is curved, the cylindrical body 14 can be flexibly deformed according to the shape of the tube 11.

  The flexible resin tape 15 is formed of a resin material such as a polyolefin resin such as a polyethylene resin or a polypropylene resin, a polyester resin, a vinyl chloride resin, a polycarbonate resin, or a polyimide resin.

  The thickness of the flexible resin tape 15 is preferably in the range of 15 to 400 μm. This is because the heat generating tape 13 exhibits excellent flexibility, and even when the air supply tube 11 is bent, the heat generating tape 13 can be flexibly deformed according to the shape of the tube 11.

  As the conductive wire 16 shown in FIG. 2, a thin film conductive wire attached to the surface of the flexible resin tape 15 is used. As the conductive wire, for example, a wire formed of a conductive material such as copper may be attached to the surface of the flexible resin tape.

  The thin conductive wire 16 is formed on the surface of the flexible resin tape 15 by printing, for example, a pattern of ink containing fine particles of a conductive material such as silver, copper, or tin-doped indium oxide, Alternatively, a thin film of the conductive material can be formed by a vapor phase method (eg, vacuum deposition method, sputtering method, etc.), and the thin film can be patterned. The thin-film conductive wire may be formed by preparing a flexible resin tape having a metal foil (eg, copper foil or aluminum foil) laminated on the surface and patterning the metal foil by etching. Good.

  It is also preferable to laminate a protective film on the surface of the heat generating tape 13 on which the thin film conductive wire 16 is formed. By laminating the protective film, an increase in resistance value due to oxidation of the thin-film conductive wire 16 can be suppressed. The preferable material and thickness range of the protective film are the same as those of the flexible resin tape 15 described above. More preferably, the sum of the thickness of the flexible resin tape and the thickness of the protective film is 400 μm or less. Further, instead of the protective film, a resin layer (eg, resist layer) may be formed on the surface of the heat generating tape.

  As shown in FIG.2 and FIG.3, it is equipped with the lid | covers 17a and 17b provided with the through-hole for inserting the air supply tube 11 in each of the both ends of the cylinder 14 of the heating tool 12. As shown in FIG. preferable. The lid 17a is formed with a hole 18 for inserting the heat generating tape 13 into the cylinder 14. By attaching the lids 17a and 17b, the heat generated in the thin film conductive wire 16 is prevented from escaping to the outside of the cylindrical body 14 by riding on the air flow between the cylindrical body 14 and the air supply tube 11. Therefore, the temperature of the air in the air supply tube can be maintained more stably.

  2 and FIG. 3, for example, by fitting lids 17a and 17b to both ends of the cylinder 14, and inserting the heating tape 13 into the cylinder 14 from the hole 18 of the lid 17a. Can be easily assembled. As shown in FIG. 2, the heat generating tape 13 is cut into an L shape or the upper end of the heat generating tape 13 is sandwiched between clips so that the entire heat generating tape 13 is It can be prevented from falling inside.

  And the air supply tube 10 with a heating tool shown in FIG. 1 is obtained by inserting the air supply tube 11 into the heating device 12 so as to pass through the through holes of the lids 17a and 17b. In addition, when the air supply tube 11 is inserted into the heating tool 12, the tip of the air supply tube may abut against the heat generating tape 13. However, when the air supply tube is further pressed, the heat generating tape 13 is flexibly deformed to form a cylindrical body. 14 moves to the side of the inner side surface of the heater 14, so that the heating tape 13 does not interfere with the assembly of the heated air supply tube 10.

  There are no particular restrictions on the procedure for assembling the air-feeding tube 10 with a heating device. For example, the lid 17a, the cylinder 14 and the lid 17b are inserted into the air-feeding tube 11 and fitted together, and then heat is generated from the hole 18 of the lid 17a. The tape 13 can also be assembled by inserting it into the cylindrical body 14. In addition, for example, a slit extending in the length direction of the cylinder body 14 may be formed, and the air supply tube 11 may be disposed inside the cylinder body 14 through a gap generated by spreading the slit by hand. Similarly, slits for passing the air supply tube can be formed in the lids 17a and 17b.

  The cylindrical body used for the heating tool of the present invention shown in FIGS. 2 and 3 can be manufactured at low cost by, for example, extrusion molding. The heat generating tape can also be manufactured continuously, that is, at low cost, by forming a thin film-like conductive wire on the surface of the flexible resin tape wound in a roll shape. Furthermore, the heating tool of the present invention can be easily assembled by simply inserting a heat-generating film into the cylindrical body, for example. Thus, since the heating tool of this invention can be manufactured at low cost, it is suitable for the usage which discards with an air supply tube after use.

  After attaching such a heating device to an air supply tube (tracheal tube), sending air warmed using this air supply tube with a heating device into the patient's body, and after finishing the treatment By discarding the heating device together with the air supply tube, it is possible to save the trouble of washing or sterilizing the heating device every time it is used, and it is possible to perform an extremely hygienic treatment.

  FIG. 4 is a partial cross-sectional view showing another configuration example of the air supply tube with a heating tool of the present invention. The configuration of the air supply tube 40 with the heating tool in FIG. 4 is that the shape of the lower part of the resin cylinder 44 of the heating tool 42 is an inverted truncated cone, and the heating tape 13 is the cylinder 44. 1 is the same as the air-feeding tube 10 with the heating device shown in FIG. Thus, if the shape of the lower part of a cylinder is made into an inverted truncated cone shape, it will become easy to let an air supply tube penetrate the cylinder of a heating tool.

  FIG. 5 is a partial cross-sectional view showing still another configuration example of the air supply tube with a heating tool of the present invention. The configuration of the air supply tube 50 with the heating tool in FIG. 5 is that the lid is not provided at both ends of the resin cylindrical body 54 of the heating tool 52, and the heating tape 53 extends along the inner peripheral surface of the cylindrical body 54. 1 is the same as the air-feeding tube 10 with the heating tool shown in FIG.

  As described above, when the lid is not provided at both ends of the cylinder, the air between the cylinder 54 and the air supply tube 11 is set by setting the inner diameter of the cylinder 54 as close as possible to the outer diameter of the air supply tube 11. Since the flow of air is stabilized, the temperature of the air in the air supply tube can be maintained more stably. As shown in FIG. 5, when the heat generating tape 53 is spirally wound along the inner peripheral surface of the cylindrical body 54 and is enclosed in the cylindrical body 54, the side surface of the air supply tube is uniformly heated. Will be able to. For example, the heat generating tape 53 is formed by heating a metal columnar member, winding the heat generating tape spirally along the side surface of the columnar member, and cooling the columnar member after spirally winding the heat generating tape. By pulling out, it is held in a spiral shape.

  FIG. 6 is a view showing still another configuration of the air supply tube with a heating device of the present invention, and FIG. 7 is a view of the heat generating tape 73 shown in FIG. 6 as viewed from the air supply tube 11 side. .

  The air supply tube 70 with a heating tool in FIG. 6 includes an air supply tube 11 and a heating tool 72 attached around the air supply tube 11. The outer diameter of the air supply tube 11 shown in FIG. 6 is 4.4 mm, and the length is 170 mm. And the connection tool 77 for connecting to the front-end | tip of the air supply pipe | tube of an artificial respirator is provided in the upper end of the air supply tube 11, for example.

  As shown in FIG. 6 and FIG. 7, the heating tool 72 is formed on a flexible resin tape 75 disposed in the vicinity of the air supply tube 11 along the length direction of the thin conductive wire. The heat generating tape 73 includes a heat generating tape 73, and a resin cylinder 74 that is disposed around the air supply tube 11 and includes the heat generating tape 73. The heat generating tape 73 is inserted into the cylindrical body 74 from a cut formed in the resin cylindrical body 74, for example.

  The flexible resin tape 75 shown in FIG. 7 is formed from a polyester resin, the width direction size (W) is set to 8 mm, the length direction size (L) is set to 80 mm, and the thickness is set to 125 μm. Yes. On the surface of the flexible resin tape, a thin-film conductive line 76 formed by screen printing of silver paste is disposed, the width of the conductive line is set to 0.3 mm, and the thickness is set to 10 μm. . The resin cylinder 74 is made of vinyl chloride resin, and has an inner diameter of 6 mm, an outer diameter of 7 mm, and a length of 92 mm.

  As shown in FIG. 7, it is preferable that a temperature detection circuit 82 including a temperature sensor 81 is arranged on the heat generating tape 73 in parallel with the conductive wire 76. This is because the temperature of the air inside the air supply tube 11 can be confirmed by using the temperature detection circuit 82. When the temperature detection circuit 82 is disposed on the surface of the heating tape 73, the conductive wire 76 for heating the air supply tube 11 and the temperature detection circuit 82 for detecting the temperature inside the air supply tube 11 are replaced with resin. Since the cylindrical body 74 can be inserted and arranged at the same time, the heating tool 72 can be easily assembled.

  The temperature detection circuit 82 includes a temperature sensor 81 and thin-film electric wires 83 and 83. A thermistor is used as the temperature sensor 81 shown in FIG. The temperature sensor 81 detects the temperature inside the resin cylinder 74, and it is known from experiments that this temperature substantially matches the temperature of the air inside the air supply tube 11. Examples of the temperature sensor include a thermocouple in addition to the thermistor. Each of the thin-film electric wires 83 and 83 for supplying electric energy to the temperature sensor 81 is formed by screen-printing silver paste, the width is set to 0.2 mm, and the thickness is set to 10 μm.

  As shown in FIGS. 6 and 7, the heating tool 72 is detected by the temperature sensor 81 of the temperature detection circuit 82, which is electrically connected to the conductive wire 76 of the heating tape 73 and the temperature detection circuit 82. It is preferable that a control circuit 71 that adjusts the amount of electrical energy applied to the conductive wire 76 according to the temperature is provided.

  For example, when the temperature inside the resin cylinder 74 detected by the sensor 81, that is, the temperature of the air inside the air supply tube 11 shows a value of 38 ° C. or more, the control circuit 71 conducts Control is performed to reduce the amount of electrical energy applied to line 76. Specifically, the amount of electrical energy is reduced by decreasing the value of the current flowing through the conductive wire 76 or by passing the current intermittently. By adjusting the amount of electrical energy applied to the conductive wire 76 in this way, air heated at a stable temperature can be sent into the patient's body.

  As a power source for the heating tool 72, the control circuit 71 includes, for example, an AC adapter 79 that can be connected to a commercial power source. The AC adapter converts an AC voltage of 100 V supplied from a commercial power source into, for example, a DC voltage of 5 V and applies it to the control circuit. Thus, since the heating tool 72 can be driven at a low voltage, a dry battery or a rechargeable battery can also be used as its power source.

  In addition, the heating device is electrically connected to a display (for example, a 7-segment display) that displays the temperature value measured by the temperature sensor and a control circuit, and supplies electrical energy to the conductive wire. Lights up (or turns off) when light is on, light-emitting diode controlled to turn off (or lights up) when supply of electrical energy is stopped, or lighted when a conductor breaks or a control circuit fails It is also preferable that a light emitting diode is provided. This is because such a display or light-emitting diode can easily confirm whether the air sent into the patient's body is heated to an appropriate temperature or whether the heating device is operating normally. .

  FIG. 8 is a plan view showing another configuration example of the heating tape. The configuration of the heat generating tape 93 in FIG. 8 is the same as that of the heat generating tape 73 shown in FIG. It is the same.

  When the two temperature sensors 81a and 81b are used, when the temperature detected by the temperature sensor 81a shows a value of 38 ° C. or higher by the control circuit connected to the heat generating tape 73, for example, It is possible to control to stop the supply of electrical energy to the conductive wire 76 when the amount of applied electrical energy is reduced and the temperature detected by the temperature sensor 81b shows a value of 41 ° C. or higher. become. This prevents the air in the air supply tube from being heated to a high temperature when the temperature sensor 81a fails or when the control of the temperature in the resin cylinder by the control circuit becomes unstable. Because it can.

  FIG. 9 is a diagram showing a mode of use of the liquid feeding tube with a heating tool of the present invention. The liquid feeding tube 60 with a heating tool in FIG. 9 includes a liquid feeding tube 61 and a warming tool 62 disposed around the liquid feeding tube 61. For example, a drug solution bag 64 (or a blood bag or the like) is connected to one end of the liquid feeding tube 61, and an injection needle 63 is attached to the other end. As shown in FIG. 9, the liquid feeding tube 61 may have an octopus tube 65 on the injection needle 63 side. The octopus pipe 65 is used for removing bubbles contained in the chemical liquid flowing inside the liquid feeding tube 61.

  The configuration of the liquid supply tube 60 with a heating tool shown in FIG. 9 is such that the liquid supply tube feeds a drug solution (or blood) from the arm of a human 66 into the body through an injection needle 63 attached to one end thereof. Except that, it is the same as the air supply tube 10 with a heating tool shown in FIG. That is, as the heating tool 62, the thing of the same structure as the heating tool 12 shown in FIG.2 and FIG.3 is used.

  The liquid feeding tube 60 with a heating tool is attached to the chemical liquid bag 64. The liquid feeding tube 61 and the injection needle 63 are attached to the chemical liquid bag 64, and the liquid feeding tube 61 is inserted into the heating tool 62 from the injection needle 63 side. Alternatively, the injection needle 63 is attached to the liquid supply tube 61, the liquid supply tube 61 is inserted into the heating tool 62 from the opposite side of the injection needle 63, and the chemical solution bag 64 is attached to the liquid supply tube 61. It can be done easily.

  By using such a liquid-feeding tube 60 with a heating tool, as in the case of the air-feeding tube 10 with a heating tool shown in FIG. The tube can be heated to maintain its temperature stably over time. Moreover, the medical solution and blood heated using the liquid feeding tube 60 with a heating tool are sent into a human body for treatment, and after the treatment is finished, the liquid feeding tube 61 and the heating tool 62 (that is, the heating tool). When the attached liquid feeding tube 60) is discarded, the trouble of washing or sterilizing the liquid feeding tube and the heating tool each time it is used can be saved, and an extremely hygienic treatment can be performed.

It is a figure which shows the aspect of use of the air supply tube with a heating tool of this invention. It is a disassembled perspective view which shows the structure of the heating tool of FIG. It is a fragmentary sectional view which shows the structure of the heating tool of FIG. It is a fragmentary sectional view which shows another structural example of the air supply tube with a heating tool of this invention. It is a fragmentary sectional view which shows another structural example of the air supply tube with a heating tool of this invention. It is a figure which shows another structural example of the air supply tube with a heating tool of this invention. It is the figure which looked at the exothermic tape shown in FIG. 6 from the air supply tube side. It is a top view which shows another structural example of the heat generating tape used for the air supply tube with a heating tool of this invention. It is a figure which shows the aspect of use of the liquid feeding tube with a heating tool of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air supply tube with a heating tool 11 Air supply tube 12 Heating tool 13 Heat generating tape 14 Resin cylinder 15 Flexible resin tape 16 Thin-film-like conductive wire 17a, 17b Lid 18 Hole 19 Through-hole 20 Artificial respiration apparatus 21 Humidifier 22 Air supply tube 23 Human 40 Air supply tube with heating tool 42 Heating tool 44 Resin cylinder 50 Air supply tube with heating tool 52 Heating tool 53 Heating tape 54 Resin cylinder 60 Feed with heating tool Liquid tube 61 Liquid supply tube 62 Heating tool 63 Injection needle 64 Drug solution bag 65 Octopus tube 66 Human 70 Air supply tube with heating tool 71 Control circuit 72 Heating tool 73, 93 Heating tape 74 Resin cylinder 75 Flexible Resin tape 76 Thin conductive wire 77 Connector 78 Connector 79 AC adapter 81, 81a, 81b Temperature sensor 82, 92 Temperature detection circuit 8 Thin film-like electrical wiring

Claims (16)

  A heating device for heating an air supply tube that is removably attached to the tip of an air supply tube that supplies air or oxygen-enriched or humidified air to the human body through the oral cavity or nasal cavity in a heated state. A heating tool including a heat generating tape in which a conductive wire is disposed along a length direction of the flexible resin tape, and a resin cylinder disposed around the heat generating tape.   The heating tool according to claim 1, wherein the heating tape is spirally wound along the inner peripheral surface of the cylindrical body and is contained in the cylindrical body.   The heating tool according to claim 1, wherein a temperature detection circuit including a temperature sensor is disposed on the heat generating tape in parallel with the conductive wire.   A control circuit is provided which is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. The heating tool according to claim 3.   An air supply tube with a heater attached around it, which is detachably attached to the tip of the air supply tube that sends air or oxygen-enriched or humidified air to the human body through the oral cavity or nasal cavity in a heated state. A heating tape in which the heating tool is disposed in the vicinity of the periphery of the air supply tube, and a conductive wire is disposed along the length direction of the flexible resin tape, and the heating tape An air supply tube with a heating device, characterized by comprising a resin cylinder disposed inside the air supply tube.   The air supply tube with a heating tool according to claim 5, wherein the heat generating tape is spirally wound along the inner peripheral surface of the cylindrical body and is enclosed in the cylindrical body.   The heating tool according to claim 5, wherein a temperature detection circuit including a temperature sensor is disposed on the heat generating tape in parallel to the conductive wire.   A control circuit is provided which is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. The heating tool according to claim 7.   A heating device for heating a liquid supply tube for sending blood or a drug solution into a human body through an injection needle, wherein a conductive wire is arranged along a length direction of the flexible resin tape. And a heating tool including a resin cylinder disposed around the heating tape.   The heating tool according to claim 9, wherein the heating tape is spirally wound along the inner peripheral surface of the cylindrical body and is contained in the cylindrical body.   The heating tool according to claim 9, wherein a temperature detection circuit including a temperature sensor is disposed on the heat generating tape in parallel with the conductive wire.   A control circuit is provided which is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. The heating tool according to claim 11.   A liquid feeding tube in which blood or a drug solution is sent into a human body via an injection needle and a heating tool is attached to the surroundings, and the heating tool is disposed in the vicinity of the liquid feeding tube. A heat generating tape in which a conductive wire is disposed along a length direction of a flexible resin tape, and a resin cylindrical body that includes the heat generating tape and is disposed in a liquid feeding tube. Liquid feeding tube with a heating tool.   The liquid-feeding tube with a heating tool according to claim 13, wherein the heat generating tape is spirally wound along the inner peripheral surface of the cylindrical body and enclosed in the cylindrical body.   The heating tool according to claim 13, wherein a temperature detection circuit including a temperature sensor is disposed on the heat generating tape in parallel with the conductive wire.   A control circuit is provided which is electrically connected to the conductive line of the heat generating tape and the temperature detection circuit and adjusts the amount of electrical energy applied to the conductive line in accordance with the temperature detected by the sensor. The heating tool according to claim 15.

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