JP2013180030A - Medical instrument warmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical instrument warmer having a simple configuration and capable of size reduction (small size), and capable of keeping a chemical (liquid) warm by using an energy without waste.SOLUTION: A medical instrument warmer includes a hemathermal body 11 that generates heat that makes a body to be kept warm a specific temperature, a covering body 15 that accommodates the hemathermal body 11 and encircles the body to be kept warm, a heat good conductor 21 that covers a portion of the covering body 15 opposing to the body to be kept warm, and a heat insulating material 25 that covers the covering body 15 excluding a portion opposing to the body to be kept warm.

Description

  The present invention relates to, for example, a medical instrument incubator for keeping a drug solution (liquid) in a syringe (syringe) at an appropriate temperature (heating, cooling).

  When a chemical solution is injected using a syringe, it may be necessary to keep the chemical solution at an appropriate temperature. For example, when the viscosity of the chemical solution is high, the fluidity of the chemical solution becomes low (poor), so that it is impossible to inject the chemical solution in an accurate amount.

  Therefore, it is conceivable that the chemical solution in the syringe is kept warm so as to reduce the viscosity and improve the fluidity so that an accurate amount of the chemical solution can be injected.

  As a temperature control device based on the above idea, the temperature inside the syringe or the temperature around the syringe is measured by a temperature sensor, and a temperature control device such as a heater is operated based on the measurement result, and the liquid material in the syringe Has been proposed in which the temperature of the liquid material is maintained so that the liquid material has a desired viscosity (see, for example, Patent Document 1).

  In addition, the temperature of the liquid material in the syringe is set to a desired viscosity by circulating constant temperature water in a cylinder case arranged on the outer periphery of the syringe with a constant temperature water device arranged outside the cylinder case. The thing of the structure to maintain is proposed (for example, refer patent document 1).

JP 2002-59055 A

  The temperature control device of the conventional example becomes large (large) because various devices are required outside the temperature control device or the cylinder case.

  In the latter case of the conventional example, since the temperature of the constant temperature water fluctuates while the constant temperature water circulates, that is, heat is dissipated or stored while the constant temperature water circulates, energy is wasted or liquid It may happen that the material cannot be managed at the desired temperature.

  The present invention has been made in order to eliminate the above-described disadvantages, and is a medical instrument that has a simple configuration, can be reduced in size (miniaturized), and can keep a drug solution (liquid) warm by using energy efficiently. A warmer is provided.

  (1) A medical instrument incubator of the present invention includes a thermostat that generates heat that makes a body to be warmed to a specific temperature, and a covering that houses the thermostat and surrounds the body to be warmed. Features.

  (2) The medical instrument warmer according to the present invention is characterized in that, in the medical instrument warmer described in (1), the covering body has flexibility.

  (3) The medical instrument warmer according to (1) or (2) is a medical instrument warmer according to (1) or (2), wherein a portion of the covering facing the warmed body is covered with a good thermal conductor, The body is covered with a heat insulating material other than the portion facing the heat-retained body.

According to the medical instrument incubator of the present invention, since the thermostat is housed in the cover and the heat-retained body is surrounded by the cover, the structure is simplified and the size can be reduced. Therefore, the chemical solution (liquid) can be kept warm by using energy without waste.
Further, since the covering body has flexibility, the covering body can be deformed in accordance with the shape of the body to be warmed, and the chemical solution can be kept warm.
In addition, since the portion of the cover facing the body to be heated is covered with a good thermal conductor and the portion other than the portion of the cover facing the body to be warmed is covered with a heat insulating material, heat from the heat retaining body to other than the body to be warmed is cut off. By cutting off the heat that travels from the body to be warmed to other than the heat retaining body, the chemical solution can be kept warm by using energy without waste.

It is a back view (figure of the surface side which contacts a to-be-heated body) of the medical instrument warmer which is 1st Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a medical instrument warmer that is a first embodiment of the present invention (a view of a surface side that does not contact a body to be heated). It is an expanded sectional view by the AA line of FIG. It is an expanded sectional view by the BB line of FIG. It is explanatory drawing which shows the use condition of the medical device warmer of 1st Example. It is a perspective view of the medical instrument warmer which is 2nd Example of this invention. It is a bottom view of the medical instrument warmer shown in FIG. It is a longitudinal cross-sectional view which passes along the center of the medical device warmer shown in FIG. It is sectional drawing by CC line of FIG. It is explanatory drawing which shows the use condition of the medical device warmer of 2nd Example.

Embodiments of the present invention will be described below with reference to the drawings.
In the following examples, an example in which a chemical solution (liquid) is kept warm by heating a body to be insulated will be described.

  FIG. 1 is a rear view of a medical instrument warmer according to a first embodiment of the present invention (a view of the side in contact with a body to be heated), and FIG. 2 is a medical instrument warmer according to a first embodiment of the present invention. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 1, FIG. 4 is an enlarged sectional view taken along line BB in FIG. 1, and FIG. It is explanatory drawing which shows the use condition of the medical device warmer of 1 Example.

  As shown in FIGS. 1 to 4, the medical instrument warmer W according to the first embodiment of the present invention is a constant temperature body (thermal insulation body) 11 that generates heat to make the thermal insulation body a specific temperature, and this constant temperature. A planar covering 15 that contains the body 11 and surrounds the body to be warmed; a thermal conductor 21 that covers a portion of the covering 15 that faces the body to be warmed (the back surface of the covering 15); And a heat insulating material 25 that covers a portion (surface of the covering body 15) other than a portion facing the heat retaining body.

  Then, as shown in FIG. 5, the medical instrument warmer W is provided with hook and loop fasteners 29 and 31 as fixtures for winding and fixing the heat good conductor 21 so as to surround the second syringe S2 as a body to be warmed. I have.

  The constant temperature body 11 includes a supercooled sodium acetate as a heating element and a metal piece as an impact imparting body for crystallizing the sodium acetate.

  As a substance that generates heat by causing crystallization by applying an impact, for example, any substance that is fluid in a supercooled state can be used. Sodium acetate, sodium thiosulfate, or the like that stabilizes this state may be used.

  Moreover, the thermostat 11 uses a heat storage material that stores heat by heating in a microwave oven or a hot water bath, and the heat storage material may be a heat storage material such as a water-absorbing polymer such as sodium polyacrylate or polyvinyl alcohol. Gel may be used.

  The covering body 15 is made of, for example, a flexible vinyl film, and has a plurality of chambers 17 as indicated by dotted lines in FIGS. 1 and 2, and the thermostat 11 in each chamber 17. Is housed.

  Therefore, the heat of the constant temperature body 11 accommodated in each chamber 17 is released through the covering 15 and the good heat conductor 21.

  The above-described heat good conductor 21 is, for example, an aluminum foil or a copper foil, and is attached to the back surface of the covering 15 by adhesion or the like.

  The above-described heat insulating material 25 is, for example, a fiber heat insulating material such as glass wool or rock wool, a foamed diameter heat insulating material such as urethane foam or polystyrene foam, and is attached to the surface of the covering 15 by adhesion or the like.

  In addition, as long as the fixture can be wound and fixed so that the heat good conductor 21 is in contact with the second syringe S2 as a heat retaining body, the fixture may be other than the hook and loop fasteners 29 and 31, for example, rubber bands. May be.

  Next, how to use the medical instrument warmer W of the first embodiment will be described with reference to FIG.

  In FIG. 5, a three-way valve V is provided at the tip of a first syringe S1 for injecting a chemical solution (a body to be heated) M, a microcatheter C is provided at the tip of the three-way valve V, and a second syringe is provided at the three-way valve V. S2 is detachable.

  By switching the three-way valve V, the drug solution M in the second syringe S2 can be supplied to the first syringe S1, and the drug solution M in the first syringe S1 is supplied to the microcatheter C and injected. be able to.

  First, in the case where the medical instrument warmer W is used, when the thermostat 11 is composed of supercooled sodium acetate and a metal piece that gives an impact to the sodium acetate, the acetic acid is obtained by bending the metal piece. When sodium is impacted, sodium acetate begins to crystallize, and the crystallization propagates and continues to generate heat.

  Moreover, when the medical device thermostat 11 is a heat storage gel, heat generation is sustained by storing heat by heating with a microwave oven or the like.

  After the thermostat 11 is in a state of generating heat as described above, the thermal good conductor 21 is wound so as to be in contact with the outer periphery of the second syringe S2, and the hook-and-loop fastener 29 is connected to the hook-and-loop fastener 31, thereby keeping the medical device warm. The device W is wound around the second syringe S2 and attached.

  Thus, when the medical instrument warmer W is wound around and attached to the second syringe S2, heat is supplied to the second syringe S2, thereby maintaining the chemical solution M in the second syringe S2 at an appropriate temperature. be able to. Therefore, for example, the drug solution M can be maintained at a viscosity that can be injected in an accurate amount.

  Therefore, after switching the three-way valve V and supplying the medicine M in the second syringe S2 to the first syringe S1, the desired amount of the medicine M in the first syringe S1 is switched to the microcatheter C by switching the three-way valve V. It is possible to supply and inject an accurate amount of the drug solution M.

According to the medical instrument incubator W of the first embodiment of the present invention, the thermostat 11 is accommodated in the covering body 15 and the second syringe S2 (insulated body) is surrounded by the covering body 15, The structure is simplified and the size (small size) can be reduced, and the chemical M can be kept warm by using energy without waste.
Moreover, since the covering body 15 has flexibility, the covering body 15 can be deformed according to the shape of the second syringe S2 (insulated body), and the chemical solution M (insulating body) can be kept warm.
Moreover, the part (back surface of the covering body 15) facing the second syringe S2 (insulated body) of the covering body 15 is covered with the heat good conductor 21, and facing the second syringe S2 (insulating body) of the covering body 15. Since the part other than the part (the surface of the covering 15) is covered with the heat insulating material 25, the heat from the heat retaining body 11 to the other side than the second syringe S2 (the body to be warmed) is cut off, so that energy can be used without waste. The chemical solution M (insulated body) can be kept warm.
Moreover, since the several chamber 17 was formed in the coating | coated body 15 and the thermostat 11 was accommodated in this chamber 17, the thermostat 11 is prevented from deviating (moving), and 2nd syringe S2 (to-be-insulated body). Can be kept warm.

  6 is a perspective view of a medical instrument warmer according to a second embodiment of the present invention, FIG. 7 is a bottom view of the medical instrument warmer shown in FIG. 6, and FIG. 8 is a medical instrument warmer shown in FIG. FIG. 9 is a cross-sectional view taken along the line CC of FIG. 6, FIG. 10 is an explanatory view showing the use state of the medical device warmer of the second embodiment, and FIGS. The same reference numerals are given to the same or corresponding parts as those shown, and the description thereof is omitted.

  As shown in FIGS. 6 to 9, the medical instrument warmer W of the second embodiment of the present invention is composed of a thermostat 11 and a plastic plate that houses the thermostat 11 and surrounds the body to be warmed. The covered good body 41, the heat good conductor 21 covering the portion of the covering body 41 facing the heat retaining body (the inner peripheral surface of the covering body 41), and the portion of the covering body 41 other than the portion facing the heat retaining body (covering body 41). And a heat insulating material 25 that covers a surface other than the inner peripheral surface of the inner surface.

  The covering body 41 has a circular top plate 43 having a circular insertion hole 43a at the center, and a circular hole 45a concentric with the insertion hole 43a at the center and having a smaller diameter than the insertion hole 43a. 43, the outer cylinder 47 connecting the outer peripheral edge of the top plate 43 and the outer peripheral edge of the bottom plate 45, the inner peripheral edge of the top plate 43 and the inner peripheral edge of the bottom plate 45 slightly. It is comprised by the inner cylinder 49 which connects an inner periphery, and the cyclic | annular chamber 51 is provided.

  Thus, when the hole 45a of the bottom plate 45 is smaller in diameter than the insertion hole 43a of the top plate 43, the portion inside the inner cylinder 49 of the bottom plate 45 can function as the locking portion 45b.

  A valve 55 is provided in a portion of the bottom plate 45 that communicates with the chamber 51.

  The good heat conductor 21 is attached to the inner peripheral surface of the covering 41, that is, the inner peripheral surface of the top plate 43 and the inner peripheral surface of the inner cylindrical body 49. Is attached to a part other than the outer surface to which

  Next, how to use the medical instrument warmer W of the second embodiment will be described with reference to FIG.

  First, when using the medical instrument warmer W, when the thermostat 11 is composed of supercooled sodium acetate and a metal piece that gives an impact to the sodium acetate, the chamber 51 is connected via the valve 55. When a shocking object is inserted into the sodium acetate and the sodium acetate is shocked, the sodium acetate starts to crystallize, and the crystallization propagates to sustain the heat generation.

  Moreover, when the thermostat 11 is a heat storage gel, heat generation is continued by storing heat by heating with a microwave oven or the like.

  After making the thermostat 11 generate heat as described above, the second syringe S2 is inserted from the needle side into the insertion hole 43a of the top plate 43 so as to be in contact with the good thermal conductor 21, and the needle is inserted into the hole of the bottom plate 45. While protruding from 45a, the lower end of 2nd syringe S2 is made to latch to the latching | locking part 45b.

  As described above, when the needle protruding from the medical instrument warmer W is connected to the three-way valve V with the second syringe S2 inserted through the medical instrument warmer W, heat is supplied to the second syringe S2. By doing so, the chemical solution M in the second syringe S2 can be maintained at an appropriate temperature. Therefore, for example, the drug solution M can be maintained at a viscosity that can be injected in an accurate amount.

  Therefore, after the three-way valve V is switched and the chemical solution M in the second syringe S2 is supplied to the first syringe S1, the three-way valve V is switched and the chemical solution M in the first syringe S1 is supplied to the microcatheter C in a desired amount. It is possible to supply and inject an accurate amount of the drug solution M.

  Also in the medical instrument warmer W of the second embodiment of the present invention, the same effect as the medical instrument warmer W of the first embodiment can be obtained.

  Throughout this specification and the claims, the term “generates heat” is intended to include not only generating positive heat (heating) but also generating negative heat, ie, absorbing heat.

  Therefore, a thermostat (heat insulator) that takes heat from the body to be heated to make the body to be kept at a specific temperature, for example, a capsule containing an ammonium nitrate aqueous solution and an aqueous uric acid solution in the thermostat 11 and the capsule Even if an endothermic reaction is caused by dividing, the desired purpose can be achieved.

W Medical Instrument Insulator 11 Constant Temperature Body (Insulated Body)
15 Covering body 17 Chamber 21 Heat conductor 25 Thermal insulation 29 Surface fastener (mounting tool)
31 hook-and-loop fastener
41 Covering Body 43 Top Plate 43a Insertion Hole 45 Bottom Plate 45a Hole 45b Locking Part 47 Outer Cylindrical Body 49 Inner Cylindrical Body 51 Chamber 55 Valve S1 First Syringe S2 Second Syringe (Insulated Body)
M chemical solution (liquid, to be kept warm)
V Three-way valve C Microcatheter

Claims (3)

A thermostat that emits heat to make the body to be insulated a specific temperature;
A housing that houses the thermostat and surrounds the insulated body;
A medical device warmer characterized by that. The medical instrument incubator according to claim 1,
The covering body has flexibility,
A medical device warmer characterized by that. The medical instrument incubator according to claim 1 or 2,
Covering the part of the covering body facing the heat retaining body with a good thermal conductor,
Covered with a heat insulating material other than the portion of the covering body facing the heat retaining body,
A medical device warmer characterized by that.

Images