313results about How to "Avoid the risk of shedding" patented technology

The invention discloses artificial chordae tendineae and an artificial chordae tendineae implanting system. The artificial chordae tendineae comprises a flexible chordae tendineae main body, wherein the first end and / or the second end of the chordae tendineae main body are / is connected with a fixing element; and a puncture connecting element is arranged at one side, backing to the chordae tendineae main body, of the fixing element. The artificial chordae tendineae implanting system comprises a clamping device, a puncture device and a pushing device, wherein the pushing device comprises a pushing guide pipe; the puncture device and the clamping device are arranged in different inner cavities of the pushing guide pipe in a penetrating way; the clamping device comprises a clamping push rod, afar end clamp head and a near end clamp head; the near end clamp head is arranged at the far end of the pushing guide pipe; the far end clamp head is arranged at the far end of the clamping push rod;the artificial chordae tendineae is accommodated in the clamping device; the fixing element of the artificial chordae tendineae corresponds to a puncture needle head; the puncture device comprises the puncture needle head and a puncture push rod; the puncture push rod is connected with the near end of the puncture needle head; and the far end of the puncture needle head is a cone-shaped straightsharp end. The artificial chordae tendineae and the puncture needle head form stable connection; the puncture point is small; the injury on valve leaflets is reduced; and the operation time is reduced.

The invention provides a detachable five star foot rest with split convenience. The foot rest comprises a foot rest seat and five support arms, the front side of a raised head of the foot rest is provided at least one socket, and the socket comprises two edge slots which are parallelly separated, and a connecting slot for completely communicating the two edge slots from up ends to bottom ends; an end face at the inner end of the support arm is provided with an inserting column for inserting and installing into the socket; the inserting column and the upper surface of the support arm form a step, and a boss which is stuck to the upper surface of the support arm is arranged on the front side of the raised head on the upper part of the socket; a hook buckle and a hook groove which are buckled together and installed in place are arranged between the bottom surface of the boss and the upper surface of the support arm, so that the support arms and the foot rest seat can be conveniently and easily mounted and dismounted; the socket which comprises two edge slots and the connecting slot can prevent shaking and loosening, and at the same time the hook buckle and the hook groove can prevent falling off, so that the connection of the five star foot rest has firm and reliable connection, risk of falling off which is generated in the usage process is avoided; the foot rest has the advantages of reasonable structure, easy dismounting, and lower production cost.