Abstract: A tri-ring syringe which includes a barrel (1) having a distal end and a proximal end. The proximal end of the barrel (1) is provided with a double ring handle. The syringe also includes a plunger (2) including a distal end and a proximal end, the proximal end of the plunger (2) being provided with a single ring handle (5), the distal end of the plunger (2) connecting with a rubber stopper (6) and being inserted into the interior of the barrel (1); and an insertion part (3) connected to the barrel (1) and rotating synchronously with the barrel. The invention allows the torque of the rotation of the barrel (1) to be transmitted outward.

Abstract: A balloon pressure pump comprising a cavity (1) having a distal end and a proximal end; a push rod (2) having a distal end and a proximal end, and provided with an external thread and inserted into the cavity; a handle (3) fixedly connected with the proximal end of the push rod (2); a locking member (4) having a distal end and a proximal end and arranged on the proximal end of the push rod (2) and used to lock same; the distal end of the locking member (4) is fixedly connected with the proximal end of the cavity (1). The handle (3) is internally provided with a sleeve (5) to accommodate the push rod (2); said sleeve (5) is fixedly connected with the proximal end of the locking member (4). The proximal end of the push rod (2) includes a spring (11) which is enclosed within the sleeve. The simple structure of the pump simplifies operations such as pressure application, pressure relief, negative pressure evacuation and the like, and is greatly convenient for a user.

Abstract: A triple three-way valve device comprises: a valve body (1) having a distal end and a proximal end, wherein the proximal end of the valve body (1) is connected with a control knob (2) that is radially rotatable relative to the valve body (1); and a valve rod (3) having a distal end and a proximal end, wherein the valve rod (3) is provided within the valve body (1) and is fixedly connected with the control knob (2). The distal end of the valve body (1) is connected with a seat body (4), which is connected with a plurality of liquid passages and a high pressure pipe passage; a selection member (5) provided at the distal end of the valve body (1), wherein, depending on the position of the control knob (2), the selection member (5) selects the communication relationships between the plurality of liquid passages of the seat body (4), the high pressure pipe passage and the valve rod. With the triple three-way valve device, angiocardiography surgery is simplified, and surgery safety and efficiency are improved.

Abstract: A triple three-way valve device comprises: a valve body (1) having a distal end and a proximal end, wherein the proximal end of the valve body (1) is connected with a control knob (2) that is radially rotatable relative to the valve body (1); and a valve rod (3) having a distal end and a proximal end, wherein the valve rod (3) is provided within the valve body (1) and is fixedly connected with the control knob (2). The distal end of the valve body (1) is connected with a seat body (4), which is connected with a plurality of liquid passages and a high pressure pipe passage; a selection member (5) provided at the distal end of the valve body (1), wherein, depending on the position of the control knob (2), the selection member (5) selects the communication relationships between the plurality of liquid passages of the seat body (4), the high pressure pipe passage and the valve rod. With the triple three-way valve device, angiocardiography surgery is simplified, and surgery safety and efficiency are improved.