602results about How to "Avoid compression" patented technology

There are provided torque limiting mechanisms for use in tissue clamping surgical instruments. The torque limiting mechanisms generally include a driven member, engageable with an approximating mechanism of the surgical instruments, and having a driven surface and a driving member having a driving surface engageable with the driven surface of the driven member. The driving member is rotatable relative to the driven member such that the driving surface of the driving member slips relative to or dissengages from the driven surface of the driven member at a predetermined engagement pressure.

Methods and apparatuses for promoting fusion of vertebrae are provided. The apparatuses comprise interconnecting plates that fixate vertebrae to each other and provide for a predetermined amount of subsidence where the fusion occurs. Allowing for this predetermined amount of subsidence increases bone to bone contact at the graft, which promotes fusion without having excessive settling of the two vertebrae onto the graft. The predetermined amount of subsidence is achieved by the placement of a plate spacer between each of two interconnecting plates when the plates are attached to the vertebrae. The plate spacer has a height equal to the maximum amount of subsidence desired. After affixing the plates to the vertebrae, the plate spacer is removed, leaving a space between the plates, which allows the vertebrae to subside by a distance equal to the height of the plate spacer.

An apparatus and method for encoding video frames is provided. The video frames are divided into blocks for encoding. Encoding of the video blocks utilizes motion detection, motion estimation and adaptive compression, to obtain the desired compression for a particular bit rate. Adaptive compression includes intra compression (without regard to other frames) and inter compression (with regard to other frames). Intra compression, inter compression with motion detection, and inter compression with motion estimation are performed on a block by block basis, as needed. Segmentation is provided to compare encoding of a block with encoding of its sub-blocks, and to select the best block size for encoding.

The invention discloses a rotating shaft mechanism which comprises a rotating shaft group, fixing parts and sliding parts, wherein the rotating shaft group comprises at least two parallelly arranged rotating shafts; the fixing parts are disposed on the two sides of the rotating shaft group; and the sliding parts are used for connecting the rotating shaft group with the fixing parts and at least disposed on one side of the rotating shaft group. When the rotating shafts at the symmetric positions are close to or far away from each other, due to the action of the sliding parts, the distance between the rotating shaft group and the fixing parts changes in the length direction of the rotating shaft mechanism. According to the rotating shaft mechanism, the sliding parts and the fixing parts are additionally arranged on the basis of an original rotating shaft mechanism. The sliding parts and the fixing parts can offset the displacement change generated by the movement of the rotating shafts being close to or far away from each other, it is guaranteed that the length of the outer side of the rotating shaft mechanism is unchanged, and a flexible screen laid on the rotating shaft group and the fixing parts is not stretched or compressed. Therefore, the rotating shaft mechanism can normally cooperate with the flexible screen for use, and the damage to the flexible screen is avoided. The invention also provides an electronic product with the rotating shaft mechanism.

A gel-filled seismic streamer containing a hydrophone housing which isolates a hydrophone element from shear waves and mechanical forces but sensitive to pressure waves. In one embodiment, the gel-filled streamers contains a hydrophone housing with an air pocket at each end for isolating a pressure sensitive hydrophone element from mechanical noise generated by cable movement during seismic data acquisition operations. The hydrophone housing further provides and a protective case to isolate a pressure-sensitive hydrophone element from shear waves. An inlet formed in the protective hydrophone housing enables pressure waves to be communicated to the pressure sensitive hydrophone element inside of the housing. An alternative hydrophone housing for deployment inside of a streamer is also disclosed which fixably positions a positioning hydrophone or seismic hydrophone within the housing using rubber supports.

An implantable access post having a port casing core with an aperture therethrough, a patch associated with the port casing core, the patch adapted to be sewn to a vessel to connect the port casing core to the vessel to permit fluid communication from the vessel through the aperture of the port casing core, and an insert disposed within the aperture of the port casing core, the insert adapted to prevent fluid flow through the aperture. The insert may be self-sealing and may include a valve. The port may also include a port outer casing at least partially surrounding the port casing core.