Abstract: The present disclosure relates to a rotational atherectomy device and a medical device including the rotational atherectomy device. The rotational atherectomy device includes a drive shaft and a rotational atherectomy component connected to the drive shaft. The rotational atherectomy component includes a base and a rotational atherectomy block. The rotational atherectomy block is relatively movably assembled on the base. When the rotational atherectomy component rotates, the rotational atherectomy block moves in a direction away from the base.

Abstract: An electrode balloon catheter and a high-voltage generation processing device are provided. The electrode balloon catheter includes a balloon, an inner catheter and a shock wave generation component. The balloon is disposed over the inner catheter and radially expands or collapses as a result of filling an inflation fluid therein or evacuating the inflation fluid therefrom. The shock wave generation component includes a flexible circuit layer and an electrode arrangement. The flexible circuit layer is disposed on the inner catheter, and the electrode arrangement is provided on the inner catheter to be located within the balloon. The electrode arrangement is connected to the flexible circuit layer and connected to a high-voltage generation processing device via the flexible circuit layer. The flexible circuit layer enables the electrode balloon catheter to have a reduced passage size closer to the size of a pre-dilation balloon.

Abstract: A driving device and a rotary grinding apparatus, comprising: a mounting sleeve (100), an accommodating chamber (101) being axially formed in the mounting sleeve (100), and the two ends of the mounting sleeve (100) in the axial direction being respectively a driving end (110) and a connecting end (120); a driving shaft (200), passing through the accommodating chamber (101) in the axial direction and rotatable about the axis; and a communication valve (300), provided in the accommodating chamber (101), an input channel (301) and a cooling channel (302) penetrating through the communication valve (300) being formed inside the communication valve (300); one end of the input channel (301) being communicated with the cooling channel (302) and the other end being communicated with the outside to introduce a cooling medium; the cooling channel (302) being sleeved outside the driving shaft (200) in a clearance fit manner; and a first outlet (302a) and a second outlet (302b) being respectively formed on one side of th

Abstract: A drive shaft (1, 3) for use with a rotation device (10, 20) includes an outer layer (11, 31) and an inner layer (12, 32). The outer layer is a tubular structure, and the inner layer is accommodated in a space defined by the outer layer and defines a central lumen (13, 33) for receiving therein an external mechanism. The outer layer is rotatable about the central lumen, and the inner layer is rollable relative to both the outer layer and the external mechanism and thus allows rolling friction to occur between the drive shaft and the external mechanism. Such a structure of the drive shaft can reduce friction between the drive shaft and a guidewire as well as loss due to such friction, avoiding failure of the guidewire due to excessive friction between the guidewire and the drive shaft. Therefore, it is ensured that the drive shaft is suitable for use with guidewires commonly used in clinical practice, resulting in improved surgical operability and lower surgical cost.

Abstract: The present invention relates to a rotational atherectomy apparatus and a rotational atherectomy device. The rotational atherectomy apparatus includes a drive device and the rotational atherectomy device. The drive device is coupled to a drive shaft of the rotational atherectomy device in order to actuate rotation of the rotational atherectomy device. The rotational atherectomy device is used for vascular surgery and includes the drive shaft and a rotating abrasive head. The drive shaft has a distal connecting portion coupled to the rotating abrasive head. The rotating abrasive head and the drive shaft separately define hollow cavities axially extending therethrough. The hollow cavities are configured for insertion of a guide body therethrough. A centroid of a structure consisting of the rotating abrasive head and the connecting portion coupled thereto does not coincide with center axes of the hollow cavities.

Abstract: A rotablator apparatus (10), comprising a rotablator assembly (11), a drive shaft (12), a liquid passing pipe (14), and a liquid pumping part (15). A distal end of the drive shaft (12) is connected to the rotablator assembly (11) and is used for driving the rotablator assembly (11) to rotate. The liquid passing pipe (14) is sleeved on the drive shaft (12), and the liquid passing pipe (14) is provided with a liquid passing cavity (141). The liquid pumping member (15) is in transmission connection with the drive shaft (12), and driven by the drive shaft (12), can convey liquid to the far end of the liquid passing pipe (14) by means of the liquid passing cavity (141).

Abstract: An electrode balloon catheter includes a catheter body (1), an outer balloon (2), an inner balloon (3) and electrode pairs (4). The electrode pairs (4) are arranged on a surface of the inner balloon (3), and both the inner balloon (3) and the outer balloon (2) are provided at an end of the catheter body (1). The inner balloon (3) is located inside the outer balloon (2). The outer balloon (2) is configured to store a conductive medium. The electrodes can be adjusted to desired positions by manipulating the inner balloon (3). This enables adjustability in an energy propagation distance, which eventually results in enhanced lesion treatment efficiency, reduced surgical duration and an extended service life of the electrodes.

Abstract: A test socket for a semiconductor integrated circuit (IC) is provided. The test socket includes a socket body configured to engage the semiconductor IC and a load board and an elastomer retainer including a top surface adjacent to the socket body and configured to face the semiconductor IC, and a bottom surface configured to face a load board. The elastomer retainer defines a slot extending from the top surface to the bottom surface. The test socket further includes a rotational contact positioned in the slot. The rotational contact is configured to move between a free state, a pre-load state, and a loaded state. The elastomer retainer is configured to compress under a pre-load force from the rotational contact when moving from the free state to the pre-load state, and compress under a loading force from the rotational contact when moving from the pre-load state to the loaded state.

Abstract: An electrode balloon catheter and a high-voltage generation processing device are provided. The electrode balloon catheter includes a balloon, an inner catheter and a shock wave generation component. The balloon is disposed over the inner catheter and radially expands or collapses as a result of filling an inflation fluid therein or evacuating the inflation fluid therefrom. The shock wave generation component includes a flexible circuit layer and an electrode arrangement. The flexible circuit layer is disposed on the inner catheter, and the electrode arrangement is provided on the inner catheter to be located within the balloon. The electrode arrangement is connected to the flexible circuit layer and connected to a high-voltage generation processing device via the flexible circuit layer. The flexible circuit layer enables the electrode balloon catheter to have a reduced passage size closer to the size of a pre-dilation balloon.

Abstract: A driving device and a rotary grinding apparatus, comprising: a mounting sleeve (100), an accommodating chamber (101) being axially formed in the mounting sleeve (100), and the two ends of the mounting sleeve (100) in the axial direction being respectively a driving end (110) and a connecting end (120); a driving shaft (200), passing through the accommodating chamber (101) in the axial direction and rotatable about the axis; and a communication valve (300), provided in the accommodating chamber (101), an input channel (301) and a cooling channel (302) penetrating through the communication valve (300) being formed inside the communication valve (300); one end of the input channel (301) being communicated with the cooling channel (302) and the other end being communicated with the outside to introduce a cooling medium; the cooling channel (302) being sleeved outside the driving shaft (200) in a clearance fit manner; and a first outlet (302a) and a second outlet (302b) being respectively formed on one side of th

Abstract: Disclosed are a self-switching transmission assembly, a balloon, and a prosthesis for use in a shoulder joint. The self-switching transmission assembly comprises: a communicating tube (11, 11?, 11?) comprising an input end (111, 111?, 111?) and an output end (112, 112?, 112?); an external connection tube (12, 12?, 12?), an end portion thereof being insertable into the communicating tube (11, 11?, 11?) from the input end (111, 111?, 111?) and removable from the communicating tube (11, 11?, 11?) from the input end (111, 111?, 111?); and a sealing tube (13, 13?, 13?), which can be placed in a tube body of the communicating tube (11, 11?, 11?) and moved axially relative to the tube body of the communicating tube (11, 11?, 11?).

Abstract: A drive shaft (1, 3) for use with a rotation device (10, 20) includes an outer layer (11, 31) and an inner layer (12, 32). The outer layer is a tubular structure, and the inner layer is accommodated in a space defined by the outer layer and defines a central lumen (13, 33) for receiving therein an external mechanism. The outer layer is rotatable about the central lumen, and the inner layer is rollable relative to both the outer layer and the external mechanism and thus allows rolling friction to occur between the drive shaft and the external mechanism. Such a structure of the drive shaft can reduce friction between the drive shaft and a guidewire as well as loss due to such friction, avoiding failure of the guidewire due to excessive friction between the guidewire and the drive shaft. Therefore, it is ensured that the drive shaft is suitable for use with guidewires commonly used in clinical practice, resulting in improved surgical operability and lower surgical cost.

Abstract: The present disclosure relates to a rotational atherectomy device and a medical device including the rotational atherectomy device. The rotational atherectomy device includes a drive shaft and a rotational atherectomy component connected to the drive shaft. The rotational atherectomy component includes a base and a rotational atherectomy block. The rotational atherectomy block is relatively movably assembled on the base. When the rotational atherectomy component rotates, the rotational atherectomy block moves in a direction away from the base.