CN218792467U - Medical liquid nitrogen cup - Google Patents

Abstract

The application relates to a medical liquid nitrogen cup, which comprises a shell, a cover body, a condensing part and a cooling part, wherein the shell comprises at least two layers of heat-insulating materials; the cover body is arranged at the opening of the shell, and the shell and the cover body surround to form a closed accommodating cavity; the condensing part is arranged in the accommodating cavity, a plurality of concave parts are arranged on the condensing part, the condensing part divides the accommodating cavity into an upper side and a lower side, and the lower side of the accommodating cavity is used for storing liquid nitrogen; the cooling part is partially clamped in the concave part. Above-mentioned medical liquid nitrogen cup stores the liquid nitrogen in the separated holding chamber downside of condensing part, and the cooling part cooling back of contacting with the condensing part through heat-conduction uses microthermal cooling part cryotherapy patient, can prevent that the liquid nitrogen from volatilizing in the liquid nitrogen cup to this medical liquid nitrogen cup simple structure need not dispose extra transfusion system, and weight is lighter, easily carries and low in manufacturing cost.

Description

Medical liquid nitrogen cup

Technical Field

The application relates to the technical field of medical instruments, in particular to a medical liquid nitrogen cup.

Background

The liquid nitrogen freezing treatment is a physical therapy commonly used in dermatology and beauty salons of hospitals, and aims to treat and beautify the skin by utilizing low temperature to act on the skin damage of a pathological change tissue to lead the pathological change tissue to be necrotic and shed.

Liquid nitrogen is a clear liquid that is colorless, odorless, non-corrosive, non-flammable, and extremely low in temperature, about-196 ℃. The main mechanism of the treatment and the cosmetology is that the temperature is suddenly reduced, so that ice crystals are formed inside and outside tissue cells, and the structure is destroyed and cracked; meanwhile, the cell is dehydrated, the electrolyte is concentrated, the pH value is changed, the protein is denatured, and the cell is metabolized and killed at low temperature. By using the principle, the skin is frozen to make the tissue cells of the vegetation, such as freckles, black nevi, pigmented spots, and the like, necrotize and shed, so as to achieve the purpose of treating and beautifying the skin.

The prior widely used cryotherapeutic devices comprise a portable cryotherapeutic device and a semiconductor liquid nitrogen cryotherapeutic device, and the traditional cryotherapeutic device generally comprises a cold head, a transfusion tube, a liquid storage bottle and a handle. The liquid nitrogen flows into the cold head from the liquid storage bottle through the infusion tube by the pressure formed by the evaporation of the liquid nitrogen, the cold head is contacted with the skin to achieve the aim of freezing treatment, and the liquid nitrogen freezing device is provided with a plurality of freezing heads to meet the requirements of treating different diseases. However, as described above, the cold head of the conventional cryosurgical device requires a liquid storage bottle to supply liquid nitrogen to the interior of the cryosurgical device through a liquid transfer tube, and thus the cryosurgical device can not be used alone. Therefore, when transporting the cryotherapy apparatus, the cold head, the liquid storage bottle and the infusion tube need to be transported simultaneously, and the cold head and the liquid storage bottle need to be connected through the infusion tube, so that the cryotherapy apparatus has the problem of inconvenient carrying. Furthermore, the cryotherapy device is composed of a plurality of components such as a cold head, a liquid storage bottle, and an infusion tube, and has a problem of complicated structure and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a medical liquid nitrogen cup with simple structure, light weight, portability and low cost.

A medical liquid nitrogen cup comprises a shell, a cover body, a condensing part and a cooling part. The shell is provided with an opening and comprises at least two layers of heat insulation materials; the cover body is covered at the opening of the shell, and the shell and the cover body are covered to form a closed accommodating cavity; the condensing part is arranged in the accommodating cavity and divides the accommodating cavity into an upper side and a lower side; the condensing part is provided with a plurality of concave parts, and the lower side of the accommodating cavity is used for storing liquid nitrogen; the accommodating cavity is arranged on the upper side of the accommodating cavity, and part of the accommodating cavity is clamped in the concave part. Above-mentioned medical liquid nitrogen cup stores the liquid nitrogen in the separated holding chamber downside of condensing part, and the cooling part cooling back of contacting with the condensing part through heat-conduction uses microthermal cooling part cryotherapy patient, can prevent that the liquid nitrogen from volatilizing in the liquid nitrogen cup to this medical liquid nitrogen cup simple structure need not dispose extra transfusion system, and weight is lighter, easily carries and low in manufacturing cost.

In one embodiment, the medical liquid nitrogen cup comprises a first heat-insulating layer, and the first heat-insulating layer is arranged on the upper side of the accommodating cavity and attached to the condensation part.

In one embodiment, the medical liquid nitrogen cup comprises a second insulating layer, and the second insulating layer is arranged on the upper side of the accommodating cavity and attached to the cover body.

In one embodiment, a temperature transition region is arranged between the first heat insulation layer and the second heat insulation layer.

In one embodiment, the medical liquid nitrogen cup comprises an elastic piece, one end of the elastic piece is connected with the first heat-insulating layer, and one end of the elastic piece, which faces away from the first heat-insulating layer, is connected with the second heat-insulating layer.

In one embodiment, a plurality of the concave parts are distributed on the condensation part in a central symmetry manner.

In one embodiment, the cooling part comprises a cooling head and an insulating rod, the cooling head is fixedly connected with the insulating rod, and the cooling head abuts against the concave part.

In one embodiment, the depth of the recess is greater than the length of the cooling head.

In one embodiment, the cooling heads are provided with inclined planes, and the radial sizes of the inclined planes of the cooling heads are different.

In one embodiment, the heat insulation rod is arranged in the accommodating cavity in a penetrating mode, and one end, away from the cooling head, of the heat insulation rod is located outside the accommodating cavity.

Drawings

FIG. 1 is a schematic structural diagram of a medical liquid nitrogen cup according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cooling element according to an embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 is a schematic view illustrating a medical liquid nitrogen cup 10 according to an embodiment of the present disclosure, and the medical liquid nitrogen cup 10 according to the embodiment of the present disclosure includes a housing 100, a cover 200, a condensing unit 300, and a cooling member 900. The housing 100 and the cover 200 form an accommodating chamber, a condensing portion 300 is disposed in the accommodating chamber, the condensing portion 300 divides the accommodating chamber into an upper side and a lower side, and the lower side of the accommodating chamber is used for storing liquid nitrogen 400. The condensing part 300 is further provided with a plurality of concave parts 310, and the cooling piece 900 is partially clamped in the concave parts 310.

The case 100 has a cup shape having an opening. Specifically, the housing 100 includes a bottom wall and a side wall circumferentially disposed on the bottom wall. The housing 100 includes at least two layers of thermal insulation materials, wherein the thermal insulation material near the accommodating cavity has a relatively low heat transfer coefficient, and the thermal insulation material far from the accommodating cavity has a relatively high heat transfer coefficient, so as to adapt to a temperature field gradually increasing the temperature from the inside of the accommodating cavity to the outside, and to reasonably reduce the loss caused by heat conduction. The heat insulating material may be rigid foamed urethane, foamed glass, perlite, rigid foamed phenolic resin and other common materials for making heat insulating layer of low temperature storage tank.

It should be noted that, two layers of heat insulation materials can be arranged at intervals, and the gap is vacuumized to realize vacuum heat insulation, prevent heat conduction and improve heat insulation performance.

The cover 200 is disposed at the opening of the casing 100 and completely covers the opening of the casing 100, and the cover 200 is a cup cover matching with the casing 100 in shape. In the present embodiment, when the housing 100 is cylindrical, the cover 200 has a circular contour. The cover 200 is connected to the housing 100 by a screw thread, so that the housing cavity formed by the cover 200 and the housing 100 has good air tightness.

The condensing portion 300 is disposed in the accommodating chamber and divides the accommodating chamber into an upper side and a lower side. Specifically, condensing part 300 is constructed as the shape with holding chamber cross sectional shape assorted shape, and condensing part 300 surrounds the parking space who forms liquid nitrogen 400 with the downside of holding chamber, and liquid nitrogen 400 is deposited in holding chamber downside and with condensing part 300 direct contact to realize the heat transfer cooling of liquid nitrogen 400 and condensing part 300. The condensing part 300 is made of metal having a high heat transfer coefficient, so that the cooling member 900 can be rapidly cooled after contacting the condensing part 300, thereby improving cooling efficiency. Preferably, the condensation part 300 is made of aluminum, which is light in weight, low in manufacturing cost, and high in heat transfer coefficient.

The condensation part 300 is further provided with a plurality of recesses 310, and the recesses 310 are used for clamping the cooling element 900. Specifically, the concave portions 310 are disposed on the condensation portion 300 in a central symmetry manner, so as to ensure that the adjacent cooling members 900 are spaced at the same distance, and the cooling rate when each cooling member 900 is clamped in the concave portion 310 is equivalent. In the embodiment, the condensation part 300 is provided with 6 concave parts 310 in total, the cross section of the condensation part 300 is circular, and the 6 concave parts 310 are equally spaced on a circular track with a radius of 1/2 of the circle center.

Referring to fig. 2, fig. 2 shows a schematic structural diagram of a cooling element 900 in an embodiment of the present application, and in some embodiments, the cooling element 900 includes a cooling head 910 and an insulating rod 920, the cooling head 910 is fixedly connected to one end of the insulating rod 920, and one end of the cooling head 910 facing away from the insulating rod 920 is clamped in the recess 310. Specifically, the cooling head 910 includes a slant surface for direct contact with the skin of the patient to be treated, and by destroying the skin cell structure of the contact site at a low temperature, new cells proliferate and differentiate after the necrotic tissue cells are exfoliated, thereby enabling treatment of the skin of the patient.

The medical liquid nitrogen cup 10 comprises a plurality of cooling pieces 900, wherein the cooling head 910 of each cooling piece 900 is provided with an inclined surface with different radial sizes, specifically, in the embodiment, the inclined surface is a circular surface with the diameter of 1mm-6mm, and an operator can select the cooling piece 900 which is suitable for the inclined surface according to warts with different sizes at different parts of a patient, so that the area of frostbite on normal skin is reduced. In one embodiment, the cooling header 910 is a conical structure with a bevel formed at the top, and the recess 310 is a hollow cylindrical structure with a radius equal to that of the cooling header 910. Wherein, the axial length of the cooling header 910 is smaller than the depth of the recess 310, so that the cooling header 910 is fully located in the recess 310, and is sufficiently cooled by heat exchange with the condensation portion 300, thereby increasing the cooling rate of the cooling header 910.

It should be noted that the axial length of the cooling head 910 should not be too different from the depth of the recess 310, otherwise a large portion of the recess 310 will be used to cool the portion of the thermal insulating rod 920, resulting in waste of the liquid nitrogen 400 and increasing the manufacturing cost of the medical liquid nitrogen cup 10.

The heat insulation rod 920 is inserted into the accommodating cavity, and one end of the heat insulation rod 920 facing away from the cooling head 910 is located outside the accommodating cavity. When the cooling element 900 is needed for cryotherapy, the operator pulls out the entire cooling element 900 through the portion of the insulating rod 920 located outside the receiving cavity. The heat insulation rod 920 is made of a heat insulation material with a low heat transfer coefficient, so that an operator can be prevented from frostbite when holding the heat insulation rod 920. Specifically, the first heat insulating layer 500, the second heat insulating layer 700 and the cover 200 are all provided with through holes at positions perpendicular to the concave portion 310, and the diameter of each through hole is equal to that of the heat insulating rod 920, so that the cooling member 900 can pass through the through holes, and the internal air is prevented from generating a convection heat exchange channel from a gap beside the through holes.

The first thermal insulation layer 500 is disposed on the upper side of the accommodating chamber and attached to the condensation portion 300. The first insulation layer 500 is made of a common low-temperature storage insulation material and has a low heat transfer coefficient, so that heat transfer of the condensation part 300 mainly occurs between the condensation part and the cooling member 900, and heat transfer to the upper side of the accommodating cavity is not performed, thereby ensuring the temperature of the condensation part 300.

The second insulating layer 700 is disposed on the upper side of the accommodating chamber and attached to the cover 200. Specifically, the second insulating layer 700 is an insulating rubber mat, so that the cover body 200 has a certain heat insulating property. The heat-insulating rubber mat is used for preventing the accommodating cavity from directly exchanging heat with the cover body 200 with higher heat transfer coefficient, and is also used for filling a gap between the cover body 200 and the shell 100, so that low-temperature gas in the accommodating cavity is prevented from exchanging with external room-temperature gas to generate convective heat exchange.

A temperature transition region 600 is disposed between the first insulation layer 500 and the second insulation layer 700. Because the heat insulation rod 920 needs to be provided with a portion for an operator to hold, the first heat insulation layer 500 and the second heat insulation layer 700 can greatly increase the cost by filling the accommodating cavity with increased thickness under the condition of ensuring sufficient heat insulation performance. A section of cavity is thus provided between the first insulation layer 500 and the second insulation layer 700 and is defined as a temperature transition zone 600. The temperature transition region 600 is mainly low-temperature air, and since the air itself is also a medium with a very low thermal conductivity coefficient, the air can bear part of the thermal insulation function, so that the thermal insulation effect of the liquid nitrogen medical cup 10 can be enhanced while the thicknesses of the first thermal insulation layer 500 and the second thermal insulation layer 700 are reduced to reduce the manufacturing cost.

Elastic component 800 sets up between first heat preservation 500 and second heat preservation 700, and the one end and the first heat preservation 500 of elastic component 800 are connected, and elastic component 800 deviates from and is connected between the one end of first heat preservation 500 and the second heat preservation 700. Carry on spacingly through elastic component 800 in order to carry on first heat preservation 500 and second heat preservation 700, when preventing that cooling piece 900 from inserting or extracting from the holding chamber, drive first heat preservation 500 or second heat preservation 700 and remove to guarantee that condensation portion 300 contacts with liquid nitrogen 400 all the time, have the same temperature with liquid nitrogen 400. Even if the position of first heat preservation 500 or second heat preservation 700 in the holding intracavity takes place to remove, the elastic force of deformation is resumeed through elastic component 800 itself, can reset first heat preservation 500 or second heat preservation 700. Moreover, the arrangement of the elastic element 800 does not affect the operation of opening the cup cover by the operator.

In the medical liquid nitrogen cup 10, the liquid nitrogen 400 is stored in the lower side of the accommodating cavity separated by the condensing part 300, the cooling piece 900 in contact with the condensing part 300 is cooled through heat conduction, and then the low-temperature cooling piece 900 is used for cryotherapy of a patient, so that the liquid nitrogen 400 can be prevented from volatilizing from the liquid nitrogen 400 cup. The accommodating cavity is internally provided with the multiple layers of heat preservation layers, so that heat convection and heat conduction in the accommodating cavity can be reduced, and better heat preservation and heat insulation performances can be realized at lower cost. By providing different sized ramps on cooling member 900, an operator can select a suitable cooling member 900 for different portions of a patient to reduce frostbite on the patient's normal skin. The medical liquid nitrogen cup 10 of this application compares in the liquid nitrogen 400 cryotherapy ware of traditional technique, only needs to take out cooling piece 900 from medical liquid nitrogen cup 10 and can treat, does not have other loaded down with trivial details operations. Meanwhile, the medical liquid nitrogen cup 10 is simple in structure, does not need to be provided with an additional infusion system, does not volatilize liquid nitrogen 400, is light in weight, easy to carry and low in manufacturing cost.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. A medical liquid nitrogen cup, comprising:

a housing having an opening and comprising at least two layers of insulation;

the cover body is covered at the opening of the shell, and the shell and the cover body are covered to form a closed accommodating cavity;

the condensing part is arranged in the accommodating cavity and divides the accommodating cavity into an upper side and a lower side; the condensing part is provided with a plurality of concave parts, and the lower side of the accommodating cavity is used for storing liquid nitrogen; and

and the cooling piece is arranged on the upper side of the accommodating cavity and is partially clamped in the concave part.

2. The medical liquid nitrogen cup according to claim 1, comprising a first heat insulating layer disposed on an upper side of the accommodating chamber and attached to the condensing portion.

3. The medical liquid nitrogen cup according to claim 2, comprising a second insulating layer disposed on the upper side of the accommodating cavity and attached to the cover.

4. The medical liquid nitrogen cup according to claim 3, wherein a temperature transition zone is provided between the first insulating layer and the second insulating layer.

5. The medical liquid nitrogen cup according to claim 4, comprising an elastic member, wherein one end of the elastic member is connected with the first heat-insulating layer, and one end of the elastic member, which faces away from the first heat-insulating layer, is connected with the second heat-insulating layer.

6. The medical liquid nitrogen cup according to claim 1, wherein a plurality of said recesses are arranged on said condensation portion in a central symmetrical manner.

7. The medical liquid nitrogen cup according to claim 1, wherein the cooling member comprises a cooling head and an insulating rod, the cooling head is fixedly connected with the insulating rod, and the cooling head abuts against the concave portion.

8. The medical liquid nitrogen cup according to claim 7, wherein the depth of the recess is greater than the length of the cooling tip.

9. The medical liquid nitrogen cup according to claim 7, wherein the cooling heads are provided with a bevel, and the radial dimension of the bevel of each cooling head is different.

10. The medical liquid nitrogen cup according to claim 7, wherein the heat insulation rod is arranged in the accommodating cavity in a penetrating mode, and one end, facing away from the cooling head, of the heat insulation rod is located on the outer side of the accommodating cavity.

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