3results about How to "Reduce passability" patented technology

A balloon catheter includes a catheter shaft (2), a balloon (3), and a protruding portion (4A). The balloon (3) is connected to the catheter shaft (2). The balloon (3) includes an inflatable portion (3B) and a distal end connecting portion (3A). The protruding portion (4A, 4B) protrudes radially outward with respect to a center axis of the catheter shaft (2). The protruding portion (4A, 4B) has at least one of a first protruding portion (4A) provided on the distal end connecting portion (3A) of the balloon (3), or a second protruding portion (4B) provided on a distal end extending portion (220). The distal end connecting portion (3A) includes at least a region where a protrusion amount is smaller than a protrusion amount of the protruding portion (4A, 4B).

The invention discloses an intrauterine device fixing device and belongs to the field of medical instruments, the intrauterine device fixing device comprises a transverse rod and a longitudinal rod, the transverse rod is transversely arranged at the top end of the longitudinal rod, the transverse rod and the longitudinal rod form a traditional T-shaped ring structure, and the technology is an existing mature technology and is not repeated; an adjusting mechanism is arranged in the longitudinal rod in a sliding mode, a protective sleeve is arranged at the intersection of the transverse rod and the longitudinal rod in a sleeving mode, and an installation auxiliary mechanism is arranged at the bottom of the longitudinal rod when the ring feeding operation is conducted. The defect that the contraceptive ring in the current market is poor in stability is effectively overcome.

The present invention discloses an automatic lawn mower, including: a body, where the body includes a cutting mechanism including a cutting element configured to perform a working task; a first shield, connected to the body, where in a natural state, a distance X1 between at least a part of a bottom edge of the first shield and a working surface meets: X1≥60 mm; and a second shield, connected to the body and configured to extend towards the working surface to protect the cutting element, where in the natural state, a lowest point of the second shield is lower than the first shield, and a distance Y1 between the lowest point and the working surface meets: Y1≤75 mm; and the second shield is configured to move in a direction away from the working surface when a received external force is greater than a set value. According to the lawn mower in the present invention, resistance of dense grass to the machine when the machine works in high-density grass can be reduced, and the passability of the machine is improved. In addition, people's hands or feet can be blocked from entering a lower part of the machine, thereby ensuring the security of the machine to people to some extent.