Please select the most similar patent number from A, B, C and D. Which number is?
A capsule endoscope magnetic control apparatus (30) comprises a movable bed frame switchable between a single-unit mode and a two-section mode. When in the two-section mode, the movable bed frame further comprises a left mattress (33), a left bed frame (34), a left fixing member (35), a right mattress (38), a right bed frame (37), and a right supporting member (36). The left bed frame (34) and the right bed frame (37) are connected by means of a pivot shaft. When in the single-unit mode, the movable bed frame and a magnetic control main device (31) are physically connected by means of a pivot shaft. The movable bed frame of the capsule endoscope magnetic control apparatus (30) can be folded and stored according to the status of a person under examination, enhances convenience for examination, and improves user experience.
A: A capsule endoscope, comprising a first part (1) and a second part (2). The first part (1) is provided with a first power supply connection component (1071); the second part (2) is provided with a second power supply connection component (1072) and a micro motor (109); the first part (1) and the second part (2) are combined with or separated from each other by means of magnets; when a battery (108) is provided on the first part (1) or the second part (2), the first part (1) and the second part (2) are electrically connected by means of the first power supply connection component (1071) and the second power supply connection component (1072); when the first part (1) is provided with a first battery (303), and the second part (2) is provided with a second battery (304), the first part (1) and the second part (2) supply power respectively, and the capsule endoscope controls the movement direction and speed of the capsule endoscope by means of the micro motor (109) of the second part (2). The capsule endoscope controls the movement direction and speed of the capsule endoscope by driving the micro motor (109), the operation is convenient, and the cost of a control system is lowered. Moreover, a capsule is divided into two parts which are relatively independent and small in size, a subject swallows the capsule separately, and the fear of the subject in the swallowing process can be alleviated.
B: A novel wall-leaning electric bed, comprising: a back plate (1), a lower body plate (2), and a bed frame (3). The back plate (1) and the lower body plate (2) are sequentially arranged on the bed frame (3); the tail portion of the back plate (1) is rotatably connected to the bed frame (3), the back plate (1) can slide back and forth along the bed frame (3), and the bed frame (3) can drive the back plate (1) to turn over relative to the bed frame (3) and draw close to a head portion (5) of the bed frame (3); and the driving stroke of the bed frame (3) is smaller than a half of the distance from the head portion (5) to a tail portion (4) of the bed frame (3). The driving stroke is controlled not to exceed the bipartite point of the electric bed, so that the utilization rate of mounting space in the electric bed is improved, and the load capacity and stability are improved.
C: An electric bed body, comprising a fixed bed frame (1), a movable bed frame (2) capable of moving relative to the fixed bed frame (1), and a driving mechanism (3) for driving the movable bed frame (2) to move. The movable bed frame (2) is provided with space frames (213, 233) for the driving mechanism (3) to be embedded, a horizontal pipe (221), and a plurality of vertical pipes disposed on the upper and lower sides of the horizontal pipe (221); force distribution of the vertical pipes is performed to enable the electric bed body to change between a flat-lying state and a raised state; when the electric bed body is in the flat-lying state, the driving mechanism (3) is embedded in the space frames (213, 233), the configuration positions of all the vertical pipes and the position of an output shaft of the driving mechanism (3) are all located on the vertical central axis of the fixed bed frame (1), and the height of the lower surface of the driving mechanism (3) from the ground is not less than the height of the lower surface of the electric bed body from the ground.
D: Disclosed in the present application is a nursing bed-chair, the nursing bed-chair (10) comprising a bedstead (11). The bedstead (11) comprises a bedstead frame (111) and bedstead legs (112) arranged below the bedstead frame (111), with the bedstead legs (112) being used for supporting the bedstead frame (111); and a mobile bed body (12) detachably connected to the bedstead (11). The mobile bed body (12) comprises a chair back plate assembly (121), a chair seat plate assembly (122), a first connecting member (20) connecting the chair back plate assembly (121) and the chair seat plate assembly (122), a leg supporting plate assembly (123), and a second connecting member (30) connecting the leg supporting plate assembly (123) and the chair seat plate assembly (122), wherein the first connecting member (20) is used for making the chair back plate assembly (121) rotate relative to the chair seat plate assembly (122), and the second connecting member (30) is used for making the leg supporting plate assembly (123) rotate relative to the chair seat plate assembly (122). By means of the arrangement, it is possible to switch between two forms, i.e. a nursing bed and a nursing wheelchair, thereby meeting the multiple requirements of patient nursing.
Answer: A