Please select the most similar patent number from A, B, C and D. Which number is?
A nutrient solution control device (5) provided on a nutrition pump between an upper tube a (3) and an upper tube b (4) of the nutrition pump. The nutrient solution control device (5) comprises a control valve which is capable of performing a rotational motion or horizontal movement. By means of the rotational motion or horizontal movement, the control valve may extrude one of the upper tube a (3) or the upper tube b (4) to make the upper tube a (3) or the upper tube b (4) closed or opened, thereby implementing switching between two different liquids. By adopting this control device, the structure of an enteral nutrition infusion apparatus is simplified, costs are reduced, and switching between transmission of a nutrient solution and that of a rinsing solution or blending transmission based on certain proportions is achieved.
A: A clinical enteral nutrition temperature control device and method, the device comprising a containing bag (1), an infusion tube (2), and a plug (3). A double-layered buffer bag (4) is connected between the outlet of the containing bag (1) and the infusion tube (2). An electromagnetic heating coil (5) is provided at the inner layer of the buffer bag (4). The outer layer of the infusion tube (2) and the outer layer of the buffer bag (4) are both thermal insulation layers (7). A detection tube (8) is provided on the end of the infusion tube (2) close to the plug. The outlet of the buffer bag (4) is connected to a check valve. The detection tube (8) is connected to the plug (3) by means of a check valve. The infusion tube (2) at the front end of the detection tube (8) is provided with a cooling tube (12). A check valve is provided on the pipeline connecting the detection tube (8) and the containing bag (1). A temperature control cavity (15) having a controller (16) and a water storage cavity (17) inside is provided on one side of the buffer bag (4). The outlet of the water storage cavity (17) is connected to the inlet of the cooling tube (12) by means of a third check valve (18). The inlet of the water storage cavity (17) is connected to the outlet of the cooling tube (12) by means of a water pump (19). A flushing port (21) is provided on the upper part of the containing bag (1), and temperature sensors are provided in the inner layer of the buffer bag (4), in the infusion tube at the front end of the detection tube (8), and in the detection tube (8).
B: A delivery device (100), comprising a catheter assembly (20) and a control assembly (10); the control assembly (10) is provided at a proximal end of the catheter assembly (20), and the control assembly (10) comprises a first control mechanism (11); the first control mechanism (11) comprises a hollow casing (14) and a limiting unit (15), and the limiting unit (15) comprises a limiting member (151) and a hollow receiving member (152), the receiving member (152) being disposed within the casing (14); an outer surface of the receiving member (152) is provided with an axial groove (153) and a circumferential groove (154), the limiting member (151) partially passing through the casing (14), then being received within the axial groove (153) or the circumferential groove (154) such that the casing (14) may move axially or circumferentially, the casing (14) then driving the limiting member (151) to move axially or circumferentially. By means of providing the first control mechanism (11), the delivery device (100) and the delivery system directly control a connection catheter in the catheter assembly (20) that is connected to an implant to quickly switch from axial movement to circumferential movement, thereby achieving an accurate and reliable release position of the implant such that the implant is closely fitted with the tissue, and the risk of paravalvular leakage occurring is reduced.
C: A nutrient solution control method and control device. The control method comprises: acquiring plant type information of a cultivated plant; confirming, on the basis of the plant type information of the cultivated plant, a growth model and nutrient solution supply standards for the cultivated plant, the nutrient solution supply standards corresponding to each growth stage of the growth model; determining, on the basis of a preset time interval, a target growth stage that the cultivated plant is in; and adjusting, on the basis of the target growth stage, a nutrient solution supply to the cultivated plant. The control device comprises: an acquiring unit (301) for acquiring plant type information of a cultivated plant; a confirmation unit (302) for confirming, on the basis of the plant type information of the cultivated plant, a growth model and nutrient solution supply standards for the cultivated plant, the nutrient solution supply standards corresponding to each growth stage of the growth model; a determining unit (303) for determining, on the basis of a preset time interval, a target growth stage of the cultivated plant; and an adjusting unit (304) for adjusting, on the basis of the target growth stage, a nutrient solution supply to the cultivated plant. The method and device can provide reasonable nutrient solution supplies to a cultivated plant in different growth stages, achieving scientific allocation of a nutrient solution and enhancing utilization rates of the nutrient solution.
D: A vegetable bearing case comprising a solution bearing case (7) having a high-position solution inlet (1) and a low-position solution outlet (5) in an opposite arrangement. A switchback solution flow channel (2) is formed in the solution bearing case (7) at an area located between the solution inlet (1) and the solution outlet (5) by protruding flow deflecting partitions (3). An atomizer (6) is arranged in the solution flow channel (2). The solution flow channel (2) of the vegetable bearing case allows a nutrient solution to form within the entire vegetable bearing case one nutrient solution flow that flows through the entire vegetable bearing case, thus allowing for increased nutrient solution component uniformity within the vegetable bearing case, and facilitating balanced growth of a vegetable. In addition, the atomizer (6) atomizes the nutrient solution to allow the nutrient solution to vaporize evenly as a mist to the upper part space of the vegetable bearing case, thus facilitating absorption for the vegetable and satisfying requirements for nutritional substances for vegetable growth. Moreover, the volume of the nutrient solution that is atomized can be controlled via the atomizer (6) to control the growth rate of the vegetable, thus allowing the vegetable to be placed in corresponding states of normal growth, slowed growth, or zero growth, and extending the duration that the freshness of the vegetable is preserved.
Answer: A