JP2005080988A - Crymotherapy apparatus and heat conducting needle means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crymotherapy apparatus that can necrose an abnormal tissue without bringing a refrigerant into direct contact with the abnormal tissue of an affected site. <P>SOLUTION: The crymotherapy apparatus is equipped with a tank 21 that can store the refrigerant 3, a barrel 2 having a supply port for the refrigerant to get into and come out from the tank 21, and a hollow heat conducting needle means 4, one end 43 of which is inserted into the barrel 2 to make it contact the refrigerant 3, the other ends 45 and 44 extending out of the barrel 2 of which are covered with insulating sleeves 7 and 7A and the tip 44 of which is exposed from the insulating sleeves 7 and 7A as a freezing end. The hollow heat conducting needle means 4 is fully lined with a heat conductive material in the hollow portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cryotherapy apparatus and a heat conduction needle means, and more particularly, a cryotherapy apparatus and a heat conduction needle means that are inserted into an affected area where an abnormal tissue has occurred and frostbite the tissue through a low-temperature refrigerant to cause necrosis. About.

  As a conventional cryotherapy method, there is a method of injecting a cryogenic refrigerant in order to destroy an abnormal tissue such as a cancer tissue. In cryotherapy, a syringe is inserted into the affected area, and then cryogenic liquid nitrogen is used as a coolant and directly injected through the syringe, so that the coolant and the abnormal tissue come into contact with each other to cause necrosis. .

  Since liquid nitrogen directly contacts the affected area of the patient using a syringe as in the above-described conventional case, nitrogen may evaporate in the affected area and may adversely affect the affected area and its vicinity.

  The main object of the present invention is to provide a cryotherapy apparatus and a heat conduction needle means that can necrotize the abnormal tissue without directly contacting the abnormal tissue with the refrigerant.

  In order to achieve the above object, according to the first aspect of the present invention, a tank in which refrigerant is stored, a barrel having a supply port for the refrigerant to enter and exit the tank, and one end of the barrel can contact the refrigerant. The heat conduction needle means comprises a hollow heat conduction needle means, the other end side of which is inserted and extended outside the barrel with a heat insulation sleeve, and the tip is exposed as a refrigeration end from the heat insulation sleeve. The cryotherapy apparatus is characterized in that the hollow portion is lined with a heat conductive material over its entire length.

  According to the invention of claim 2, in addition to the configuration of the invention of claim 1, the heat conduction needle means is a tubular hollow body and heat that exchanges heat with the inner peripheral surface of the hollow body by a heat conduction material. A conductive layer formed as a conductive lining, and the one end inserted into the barrel of the thermal conduction needle means is a contact end in contact with the refrigerant, and the same heat conduction A cryotherapy apparatus is provided in which the tip exposed from the heat insulating sleeve of the needle means is a needle tip portion having a tip end surface inclined, and according to the invention of claim 3, the configuration of the invention of claim 2 is provided. In addition, there is provided a cryotherapy apparatus in which the heat insulating sleeve is provided so as to define a vacuum chamber around the hollow body of the heat-conducting needle means. In addition to the configuration of the invention, the thermal conduction needle means further includes the contact end portion. A cryotherapy apparatus having a heat insulating intermediate portion extending outside the barrel is provided between the needle tip portion, and according to the invention of claim 5, in addition to the configuration of the invention of claim 4 Thus, a cryotherapy apparatus is provided in which the heat insulating sleeve is provided so as to cover the outer peripheral surface of the heat insulating intermediate portion. Further, according to the invention of claim 6, in addition to the configuration of the invention of claim 1, Thus, a cryotherapy apparatus in which the refrigerant is liquid nitrogen is provided. Further, according to the invention of claim 7, in addition to the configuration of the invention of claim 2, the hollow body of the heat conduction needle means is made of copper and aluminum. According to the invention of claim 8, in addition to the structure of the invention of claim 7, the heat conducting layer is provided with the heat introduced into the hollow body. Conductive material is deposited on the inner peripheral surface of the hollow body by vacuum deposition. And have refrigeration therapy device is provided.

  According to another aspect of the present invention, there is further provided a heat conduction needle means for use in the cryotherapy apparatus. That is, according to the invention of claim 9, the heat conduction needle means for use in the cryotherapy apparatus is provided. And a conductive layer provided as a heat conductive lining for exchanging heat on the inner peripheral surface of the hollow body by the heat conductive material. Needle means are provided, and according to the invention of claim 10, in addition to the structure of the invention of claim 9, in addition to the structure of the invention of claim 9, the conductive material is introduced into the hollow body by vacuum deposition. There is provided a heat conduction needle means which is formed by vapor deposition on the inner peripheral surface.

  As described above, according to the cryotherapy apparatus or the thermal conduction needle means of the present invention, since the refrigerant is not directly fed to the abnormal tissue of the affected area, the refrigerant is not directly flowed into and contacted with the abnormal tissue of the affected area (therefore, the adverse effect of the refrigerant). The abnormal tissue can be effectively frozen until necrosis.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on examples of the present invention illustrated in the accompanying drawings.

  FIG. 1 is a perspective view schematically showing a first embodiment of the cryotherapy apparatus of the present invention. FIG. 2 is a cross-sectional view of the main part of the embodiment.

  Referring to FIGS. 1 and 2, a cryotherapy apparatus 1 according to a first embodiment of the present invention is generally connected to a barrel 2 and one end of the barrel 2 inserted into the barrel 2. A heat conduction needle means 4, a transport pipe 5 connected to the other end of the barrel 2 to send the refrigerant 3 into the barrel 2, and a speed at which the refrigerant flows into the barrel 2 provided in the barrel 2; A control valve 6 for controlling is provided. The heat conduction needle means 4 has the one end inserted into the barrel 2 as a contact end 43 in contact with the refrigerant 3, and the heat conduction needle means 4 has a heat insulating sleeve 7 to be described later. The more exposed tip is the needle tip portion 44 with the tip surface having an inclined surface.

  The barrel 2 has a tank 21 for storing the refrigerant 3 and a refrigerant supply port (not shown) for allowing the refrigerant 3 to enter and exit the tank 21. In this example, liquid nitrogen is used as the refrigerant 3.

  The heat conduction needle means 4 has a tubular hollow body 40 and a conductive layer 42 formed as a heat conduction lining that effectively exchanges heat with the inner peripheral surface of the hollow body 40 by a heat conduction material. In contact with the refrigerant 3 in the barrel 2, the heat is rapidly exchanged through the conductive layer 42 to cool the needle tip 44.

  The heat conduction needle means 4 further includes a heat insulating intermediate portion 45 extending outside the barrel 2 between the contact end portion 43 and the needle tip portion 44. A heat insulating sleeve 7 is provided around the heat insulating intermediate portion 45 of the heat conduction needle means 4 so as to cover the outer peripheral surface thereof. The heat insulating sleeve 7 is continuous with one end of the barrel 2, and the needle tip portion 44 projects from one end of the sleeve 7. The heat insulating sleeve 7 is made of a suitable material such as tempered glass or other heat insulating material.

  The hollow body 40 of the heat conduction needle means 4 is made of, for example, aluminum, copper, an alloy, or other material having very good heat conductivity. In addition, the inner peripheral surface of the hollow body 40 is subjected to a passivation treatment for cleaning and drying so as to wet well (that is, improve wettability). The conductive layer 42 is sealed in a vacuum after, for example, a heat conductive material is injected or filled into the hollow body 40, and a heat conductive material having a good heat conductivity is formed by a vacuum deposition method. It is formed by vapor deposition on the inner peripheral surface.

  The heat conductive material is at least one of sodium peroxide, sodium oxide, beryllium oxide, manganese sesquioxide, aluminum dichromate, calcium dichromate, boron oxide, dichromate ions, or a combination thereof. Compound, at least cobalt oxide, sesquimanganese oxide, beryllium oxide, strontium chromate, strontium carbonate, rhodium oxide, copper oxide, β-titanium, potassium dichromate, boron oxide, calcium dichromate, manganese dichromate, dichromium Aluminum oxide, dichromium oxide ion or a combination thereof, or at least modified rhodium oxide, potassium dichromate, modified radium oxide, sodium dichromate, silver dichromate, single crystal silicon, beryllium oxide , Chromate strike Nchiumu, boron oxide, sodium peroxide, beta-titanium, compound either or a combination of those metals dichromate is used.

  With the above configuration, when the cryotherapy apparatus 1 is used, first, the required insertion depth is monitored while monitoring the insertion depth of the needle tip portion 44 using an external detection device such as an ultrasonic detector. Until the needle tip 44 of the heat conducting needle means 4 is inserted into the affected area where the abnormal tissue is located. Then, while controlling the amount of the refrigerant by the valve 6 through the transport pipe 5, the refrigerant is supplied to the periphery of the contact end portion 43 of the heat conduction needle means 4 in the tank 21, and the conductive layer of the hollow body 40 Heat exchange is performed by 42, the temperature of the hollow body 40 is lowered, and the abnormal tissue in the affected area can be frozen until necrotic without directly entering the affected area.

  Referring to FIG. 3, the cryotherapy apparatus 1A according to the second embodiment of the present invention has a heat insulating sleeve 7A. Other configurations are provided except that the needle means 4 is provided around the heat insulating intermediate portion 45 at intervals so as to define the vacuum chamber 8 around the hollow body 40 of the needle means 4, that is, so as to cover the outer peripheral surface thereof. Is the same as in the first embodiment.

  When the cryotherapy apparatus 1A of the second embodiment is used, the abnormal tissue in the affected area can be frozen and necrotized without directly putting the refrigerant into the affected area, and the heat insulating sleeve 7A has a further improved heat insulating effect. Therefore, the same effect as in the first embodiment can be obtained with better operability.

  Thus, according to the embodiment, since the refrigerant is not directly fed to the abnormal tissue of the affected part, there is no fear of the adverse effect of the refrigerant, and the abnormal tissue can be effectively frozen until it is necrotized.

1 is a perspective view schematically showing a first embodiment of a cryotherapy apparatus of the present invention. The principal part sectional drawing of this Example. Sectional drawing which shows schematically the principal part of the 2nd Example of the cryotherapy apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cryotherapy apparatus 2 ... Barrel 21 ... Tank 3 ... Refrigerant 4 ... Heat conduction needle means 40 ... Hollow body 42 ... Conductive layer 43 ... Contact end ( One end)
44 ... Needle tip (freezing end)
45 ... Intermediate part 5 ... Transport pipe 6 ... Control valve 7, 7A ... Thermal insulation sleeve 8 ... Vacuum chamber

Claims (10)

A tank (21) for storing the refrigerant (3), and a barrel (2) having a supply port for the refrigerant to enter and exit the tank (21);
One end (43) is inserted into the barrel (2) so as to be in contact with the refrigerant (3), and the other end (45, 44) extending outside the barrel (2) is provided by the heat insulating sleeve (7, 7A). A hollow heat conducting needle means (4) that is covered and further has a tip (44) exposed from the heat insulating sleeve (7, 7A) as a freezing end,
The cryotherapy apparatus, wherein the heat conduction needle means (4) has a hollow portion lined with a heat conduction material over its entire length. The heat conduction needle means (4) includes a tubular hollow body (40) and a conduction layer (42) formed as a heat conduction lining for exchanging heat with the inner peripheral surface of the hollow body (40) by a heat conduction material. And
The one end portion inserted into the barrel (2) of the heat conduction needle means (4) is a contact end portion (43) in contact with the refrigerant (3), and the heat conduction needle means (4). The cryotherapy apparatus according to claim 1, wherein the tip exposed from the heat insulating sleeve (7, 7A) is a needle tip portion (44) having a tip end surface inclined.   3. The heat insulating sleeve (7A) is provided so as to define a vacuum chamber (8) around a hollow body (40) of the heat conducting needle means (4). Cryotherapy equipment.   The heat conducting needle means (4) further includes a heat insulating intermediate portion (45) extending outside the barrel (2) between the contact end portion (43) and the needle tip portion (44). The cryotherapy apparatus according to claim 2, wherein   The cryotherapy apparatus according to claim 4, wherein the heat insulating sleeve (7, 7A) is provided so as to cover the outer peripheral surface of the heat insulating intermediate part (45).   The cryotherapy apparatus according to claim 1, characterized in that the refrigerant (3) is liquid nitrogen.   The cryotherapy apparatus according to claim 2, characterized in that the hollow body (40) of the thermal conduction needle means (4) is formed of either copper or aluminum.   The heat conductive layer (42) is formed by vapor-depositing the heat conductive material introduced into the hollow body (40) on the inner peripheral surface of the hollow body (40) by a vacuum vapor deposition method. The cryotherapy apparatus according to claim 7. Thermally conductive needle means (4) used in the cryotherapy device (1, 1A),
A hollow body (40) formed of a heat conductive material;
A heat conduction needle means comprising a conductive layer (42) provided as a heat conduction lining for exchanging heat on the inner peripheral surface of the hollow body (40) by a heat conduction material. The conductive layer (42) is formed by vapor-depositing the heat conductive material introduced into the hollow body (40) on the inner peripheral surface of the hollow body (40) by a vacuum vapor deposition method. The heat conduction needle means according to claim 9.

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