27650results about How to "Increase friction" patented technology

The invention provides surgical or diagnostic tools and associated methods that offer user control for operating remotely within regions of the body. These tools include a proximally-located actuator for the operation of a distal end effector, as well as proximally-located actuators for articulational and rotational movements of the end effector. Control mechanisms and methods refine operator control of end effector actuation and of these articulational and rotational movements. An articulation lock allows the fixing and releasing of both neutral and articulated configurations of the tool and of consequent placement of the end effector. The tool may also include other features. A multi-state ratchet for end effector actuation provides enablement-disablement options with tactile feedback. A force limiter mechanism protects the end effector and manipulated objects from the harm of potentially excessive force applied by the operator. A rotation lock provides for enablement and disablement of rotatability of the end effector.

The invention discloses a linear suturing and cutting device. The linear suturing and cutting device comprises an upper forceps holder and a lower forceps holder which can be closed and opened mutually. The upper forceps holder comprises a nail anvil, the lower forceps holder comprises a nail cartridge rack, the nail cartridge rack is detachably provided with a nail cartridge, and the inside of the nail cartridge is sequentially provided with a nail cartridge hole which penetrates the surface of the nail cartridge and a nail pushing sheet which is arranged inside the nail cartridge and can slide relative to the nail cartridge hole; the inside of the nail cartridge is also slidingly provided with a trigger sheet, the trigger sheet is provided with a wedge-shaped nail pushing unit which can drive the nail pushing sheet to slide inside the nail cartridge hole, and the nail cartridge hole is inclined to the far end of the nail cartridge. Therefore, when the nail pushing sheet inside the nail cartridge sheet is pushed, the stress direction of the nail pushing sheet is identical to the extension direction of the nail cartridge hole, relatively high friction force between the nail pushing sheet and the inner wall of the nail cartridge hole can be avoided, so that the nail pushing sheet can be pushed more smoothly, and further the surgical difficulty can be reduced.

A vertebral retrieval device includes a retrieval rod which is gripped firmly in a receiving slot of a fixation seat between two grooves of a pressing element and a C-shaped ring. The C-shaped ring rests on a spherical head fastening screw, a spherical head of which is received in the fixation seat and a shank of which is protruding from a through hole provided in a bottom of the fixation seat. The pressing element is pressed against the retrieval rod by a pressing screw, which is threaded into a threaded hole formed in a fixation element mounted in the receiving slot of the fixation seat.

The present invention provides a golf club head comprising, a face, a plurality of score line grooves formed in the face, traces formed in the face by milling; and a pair of side surfaces of the score line groove including a first surface that is contiguous with the face and a second surface that is contiguous with the first surface in the depth direction of the score line groove. A first angle that is formed by each first surface of the pair of side surfaces is larger than a second angle that is formed by each second surface of the pair of surfaces. The face in which the traces are formed has the arithmetic mean deviation of the profile (Ra) of not less than 4.00 μm.

Golf club heads with enlarged grooves, wherein a portion of the finish adjacent or within the groove is removed to create the visual appearance of enlarged grooves. The surface finish of the groove enhancement area surrounding the groove is matched to be the same as the surface finish of the groove, preferably a bright, smooth or shiny metallic finish. This surface finish of the remainder of the striking face of the golf club is a second surface finish, preferably a dark or black matte, or rough finish. The contrast between the two finishes gives the perception that the grooves are larger than they are physically.

A surgical clip having a sliding state and a crimped state is adapted for use in a surgical procedure initially to slide along suture ends to an operative position and ultimately to crimp the suture ends at the operative position. A substrate, bendable between the sliding state and the crimped state carries at least one coating having either lubricious or traction enhancing properties. A second coating can be added to form a coating laminate with the outer coating having lubricious properties facilitating the sliding state and the inner coating having traction enhancing properties facilitating thee crimped state.

A method of assembling resilient floorboards is disclosed that includes the step of bending an edge of a floorboard during the assembling. The bending reduces the force required for connection of the edge to another edge of a juxtaposed floorboard.

Valved ports for accessing blood vessels and other body lumens include a lock mechanism which locks the valve fully open when a needle or other access tube is placed into the port. The lock mechanism includes a latch typically comprising one or more laterally deflectable elements, such as a pair of opposed balls. The deflected elements are pushed outwardly by the needle to engage a recess in the port which locks the valve open until the needle is removed.

A method of assembling resilient floorboards is disclosed that includes the step of bending an edge of a floorboard during the assembling. The bending reduces the force required for connection of the edge to another edge of a juxtaposed floorboard.

A process is proposed for laying and mechanically jointing floorboards provided with tongue and groove engagements on all sides for horizontal attachment. The process involves a) jointing of a number of boards and making them engage on their transverse sides n order to lay a first row on the floor of a room, b) jointing of a first board for a second row and making it engage with one or two boards in the first row using the tongue and groove joint on the longitudinal side for the purpose of starting a second row, c) pushing the tongue (or groove) of a second board into the groove (or tongue) on the transverse side of the first board in the second row, with movement from the longitudinal side towards the boards in the first row, and d) making the second board engage with one or two boards in the first row.

Vaso-occlusive apparatuses, including implants, and methods of using them to treat aneurysms. For example, described herein are expandable vaso-occlusive implants that include one or more soft and expandable braided member coupled to a pushable member such as a coil that maybe inserted and retrieved from within an aneurism using a delivery catheter. In particular, the expandable implants described herein are configured to allow relatively soft and elongate implants to be pushed out of a cannula without binding up within the cannula.