Please select the most similar patent number from A, B, C and D. Which number is?
A multi-function high-frequency tool for an endoscope, comprising an insert portion (1) and a handle portion (2), the insert portion (1) comprising an insulating tip (101), a first electrode (102) having a needle-knife function, a second electrode (104) having an IT-knife function, and a spray head (105); the handle portion (2) comprising a first slider (202), a connector (203), an injection connector (204), and a second slider (206). The second electrode (104) has a hollow structure, and the first electrode (102) extends through the second electrode (104); the proximal end of the first electrode (102) is fixedly connected by means of a mandrel connecting member (109) to the distal end of a mandrel (110); the proximal end of the mandrel (110) is connected to the first slider (202) of the handle portion (2), and moves axially on the handle portion (2) by means of the first slider (202), thereby causing the first electrode (102) to expose from/retract into the second electrode (104). The first electrode (102) having a needle-knife function achieves the functions such as quickly dotting to mark and cutting a mucous membrane; and the second electrode (104) having an IT-knife function is additionally provided with the insulating tip (101) at its distal end, achieving the functions such as dissecting the tissue and burning a bleeding point to stop bleeding.
A: A pressure detection module (10) provided on an inner surface of a housing (20) of an electronic device. The pressure detection module (10) comprises a first electrode (101) and a second electrode (102). A first surface of the first electrode (101) is fixed to an inner surface of a force input region of the housing (20); the two ends of a second surface of the first electrode (101) are respectively fixed onto the two ends of a first surface of the second electrode (102); and a compressible insulating layer is provided between the second surface of the first electrode (101) and the first surface of the second electrode (102), so that the first electrode (101) and the second electrode (102) form a capacitor. The force input region of the housing (20) drives, according to received external pressure, the first electrode (101) to move toward the direction of the second electrode (102) to cause the capacitance between the first electrode (101) and the second electrode (102) to change, so as to determine a pressure detection result for the external pressure. The pressure detection module (10) can implement pressure detection by merely being mounted on the inner surface of the force input region of the housing (20), without using a bracket, and the thickness of the pressure detection module (10) is small, thereby facilitating the mounting of other components inside an electronic device. The present invention also relates to an electronic device.
B: A detection mechanism, a radio-frequency ablation catheter and a radio-frequency ablation system. The radio-frequency ablation catheter comprises a handle portion (2), a needle tube portion (1), a central electrode (3) and a detection mechanism. The needle tube portion (1) comprises a first tube sleeve (11) and a second tube sleeve (12), the handle portion (2) comprises a cylinder sleeve (21) and a sliding button (22), the central electrode (3) comprises an electrode body (31), an electrode wire (26) and an electrode connector (23), and the detection mechanism comprises a fixing base (5), a traction wire, a connecting base (6) and multiple claw-shaped electrodes (7). The distal end of the traction wire is fixed on the fixing base (5), the proximal end of the traction wire is fixed on the sliding button (22), and the claw-shaped electrodes (7) are fixed on the fixing base (5) and can penetrate through the connecting base (6) in a sliding manner. Finally, the traction wire is pulled by means of the sliding button (22), thereby driving the fixing base (5) to help the claw-shaped electrodes (7) to be pushed in and pushed out in the connecting base (6), facilitating the control of a user on the claw-shaped electrodes (7) during surgery, so as to measure the temperature or impedance at the claw-shaped electrodes (7), thereby determining the progress of ablation.
C: A display panel and a manufacturing method therefor, and a display device. The display panel comprises a plurality of display units (1), and each of the display units (1) comprises a first substrate (10) and a second substrate (20) oppositely arranged. The first substrate (10) comprises a first base substrate (101), and a first electrode (102), an electrostrictive layer (103) and a reflection groove (104) arranged thereon. The second substrate (20) comprises a second base substrate (201), and a second electrode (202) and a reflection cavity (203) arranged thereon. A support (30) is arranged between the first base substrate (101) and the second base substrate (201) to keep the distance therebetween unchanged. The reflection groove (104) has a recessed portion (1041). The reflection cavity (203) has a protruding portion (2031), and the surface of the recessed portion (1041) of the reflection groove (104) matches the surface of the protruding portion (2031) of the reflection cavity (203). The first electrode (102) and the second electrode (202) are configured to form an electric field, and the electrostrictive layer (103) can be deformed under the action of the electric fields in the direction perpendicular to the first base substrate (101), so that the recessed portion (1041) of the reflection groove (104) and the protruding portion (2031) of the reflection cavity (203) can be switched between the mode where a gap (431) is formed therebetween and the mode where the surfaces of both are closely attached.
D: A pressure detection module (10) is disposed on an inner surface of a housing (20) of an electronic apparatus. The pressure detection module (10) comprises: a first electrode (101), a second electrode (102), and a support member (106). A first surface of the first electrode (101) is fixed to an inner surface of a force input region of the housing (20). The support member (106) is fixed to the inner surface of the housing (20), and a fixing position of the support member (106) is spaced apart from a fixing position of the first electrode (101). The support member (106) supports a first surface of the second electrode (102), such that a second surface of the second electrode (102) is opposite to a second surface of the first electrode (101). A compressible insulating layer is provided between the first electrode (101) and the second electrode (102), such that the first electrode (101) and the second electrode (102) form a capacitor. The force input region of the housing (20) drives, according to a received external pressure, the first electrode (101) to move in a direction toward the second electrode (102), such that a capacitance between the first electrode (101) and the second electrode (102) changes, thereby determining a pressure detection result of the external pressure. Pressure detection is achieved simply by installing the pressure detection module (10) at the inner surface of the force input region of the housing (20). The invention does not require a support frame, and the thickness of the pressure detection module (10) is small, thereby facilitating installation of other components inside the electronic apparatus. The invention further relates to an electronic apparatus.
Answer: B