An elongated massage cup includes an elongated cup having an open side and a closed side. The closed side includes a valve that connects to a pump. The pump is configured to connect to the valve and evacuate air from the elongated cup when the open side of the cup is placed against a portion of a user's body, thereby creating an airtight pocket between the elongated cup and the user's body and a suction effect against the user's skin.

A ureteral catheter includes a drainage lumen including a proximal portion configured to be positioned in at least a portion of a patient's urethra and/or bladder and a distal portion configured to be positioned in a patient's kidney, renal pelvis, and/or in the ureter adjacent to the renal pelvis, the distal portion including a retention portion for maintaining positioning of the distal portion of the drainage lumen, the retention portion including two or more openings on a sidewall of the retention portion for permitting fluid flow into the drainage lumen, wherein a number of the openings nearer to a distal end of the retention portion is greater than a number of the opening(s) nearer to a proximal end of the retention portion.

A ureteral catheter includes a drainage lumen including a proximal portion configured to be positioned in at least a portion of a patient's urethra and/or bladder and a distal portion configured to be positioned in a patient's kidney, renal pelvis, and/or in the ureter adjacent to the renal pelvis, the distal portion including a retention portion for maintaining positioning of the distal portion of the drainage lumen, the retention portion including two or more openings on a sidewall of the retention portion for permitting fluid flow into the drainage lumen, wherein a number of the openings nearer to a distal end of the retention portion is greater than a number of the opening(s) nearer to a proximal end of the retention portion.

Provided are a three-way connecting assembly and a wearable breast pump. The thrree-way connecting assembly is applied to a wearable breast pump, and includes a three-way connector and a diaphragm holder connected with the three-way connector. The three-way connector is provided with a channel, a milk sucking port, a negative pressure port and a milk outlet. The milk sucking port, the negative pressure port and the milk outlet are spaced apart and are all communicated with the channel. The diaphragm holder includes a hollow plug-in part, a connecting part and an elastic diaphragm. The connecting part connects the hollow plug-in part and the elastic diaphragm. The hollow plug-in part is inserted in the negative pressure port, and the hollow plug-in part and the elastic diaphragm are respectively located at two opposite sides of the three-way connector. The elastic diaphragm is attached to the milk outlet.

A ventilation switching structure includes a valve, a switching cylinder, and a knob. The valve includes a receiving room, a main tube and branch tubes. The main tube is connected with a negative pressure instrument and connected to the receiving room. The branch tubes are located on two sides of the main tube. The switching cylinder is rotatably disposed in the receiving room and includes a main channel, multiple lateral channels, and a blocking wall. The lateral channels communicate with the main channel and are disposed on a side of the blocking wall at intervals. The knob is connected on the switching cylinder. The knob is capable of rotating the switching cylinder to make the blocking wall optionally block one of the branch tubes so as to accomplish the object of ventilation switching.

A negative-pressure accessory of a negative-pressure instrument is connected to an instrument body through a wire and a suction pipe. The negative-pressure accessory includes a cup body and a pressure-sensing module. The cup body includes a joint connected to one end of the suction pipe. The pressure-sensing module is disposed in the cup body and communicating to the instrument body. When the instrument body sucks an air in the cup body, the pressure-sensing module senses the air flowing therethrough to obtain a negative-pressure signal in the cup body, and the pressure-sensing module transmits the negative-pressure signal to the instrument body to determine a negative-pressure value in the cup body.

A negative-pressure accessory of a negative-pressure instrument is connected to an instrument body through a wire and a suction pipe. The negative-pressure accessory includes a cup body and a pressure-sensing module. The cup body includes a joint connected to one end of the suction pipe. The pressure-sensing module is disposed in the cup body and communicating to the instrument body. When the instrument body sucks an air in the cup body, the pressure-sensing module senses the air flowing therethrough to obtain a negative-pressure signal in the cup body, and the pressure-sensing module transmits the negative-pressure signal to the instrument body to determine a negative-pressure value in the cup body.