JPH0611500U - Petri dish for microgravity environment - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding a petri dish that can be used in a microgravity environment. [Structure] A petri dish for microgravity environments having a large number of irregularities on the bottom surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a petri dish or a dish-shaped container for holding a liquid or culturing cells in a microgravity environment such as on Earth orbit.

[0002]

[Prior art]

 Conventionally, a petri dish intended to hold a liquid or to cultivate cells on the ground in a gravity environment has a bottom surface 5 formed of a smooth flat surface or a curved surface, as shown in FIG. .

[0003]

[Problems to be solved by the device]

 On the ground, it is possible to hold a liquid in a conventional petri dish or dish-shaped container, or to hold a culture solution on the bottom surface and carry out cell culture there without any problem, but this is because gravity works. This makes it possible to hold the liquid on the bottom surface of the container (dishes).

On the other hand, in a microgravity environment such as on the earth's orbit, since there is almost no gravity, even if a liquid is put in the dish, it is not fixed to the bottom surface. That is, in a microgravity environment, the surface tension is the main force acting on the liquid body, so as shown in FIG. 4, the liquid 3 contained in the petri dish adheres to the vessel wall of the container but to the side wall 1. Yes, it does not rise, its shape is not fixed, and it is not stably held on the bottom. In such a state, the original function of the dish-shaped container such as a petri dish that holds the liquid cannot be fulfilled, and there is a problem that cell culture becomes difficult.

Therefore, the present invention intends to provide a petri dish for a microgravity environment, which can stably hold a liquid on the bottom surface of a petri dish even under a microgravity environment and can stably perform cell culture and the like. It is a thing.

[0006]

[Means for Solving the Problems]

 The present invention is a dish for a microgravity environment, characterized in that it has a large number of irregularities on the bottom surface.

That is, according to the present invention, a large number of protrusions are formed on the bottom surface of a petri dish (including a dish-shaped container), or a method of forming or processing a large number of grooves on the bottom surface. It is a dish with irregularities.

[0008]

[Action]

 The large number of irregularities provided on the bottom surface of the petri dish increases the wetting edge length, resulting in a large liquid holding force. Therefore, the liquid is stably held on the bottom surface having many irregularities.

[0009]

【Example】

 FIG. 1 is a diagram showing the shape of a petri dish 1 having a large number of projections 2 on the bottom surface and a state in which a liquid 3 is held therein, which is one embodiment of the present invention.

FIG. 2 is a view showing a shape of a petri dish 1 having a large number of grooves 4 on the bottom surface and a state in which the liquid 3 is held in the petri dish 1 according to another embodiment of the present invention.

[0011]

[Effect of device]

 As mentioned above, the large number of irregularities on the bottom of the petri dish increases the surface of this area, and even in a microgravity environment, liquid is retained stably in this area mainly due to surface tension. .

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and a liquid holding state thereof.

FIG. 2 is a view showing another embodiment of the present invention and its liquid holding state.

FIG. 3 is a diagram showing a configuration of a conventional petri dish.

FIG. 4 is a diagram showing a liquid holding state of the petri dish of FIG.

[Explanation of symbols]

 1 Petri dish 2 Protrusion 3 Liquid 4 Groove

Claims (1)

[Scope of utility model registration request] 1. A petri dish for a microgravity environment, which has a large number of irregularities on its bottom surface.