Corner stitch

Abstract: • Gillies' corner stitch (GCS) has been generally accepted for closure of skin flap tips because it is commonly believed that this stitch provides the best chance for survival of a flap tip that may have a compromised blood supply. There are no experimental data, however, to support such an assumption. To test the hypothesis that other stitches might be equally efficacious, we evaluated flap tip survival after closure with two different suture techniques, the GCS and a vertical loop stitch (VLS). Factors used to evaluate flap tip viability were the measurement of RBC movement in the flap tip by laser Doppler technique and measurement of the length of flap tip necrosis. In our model, the GCS is not superior to the VLS in terms of flap tip survival. ( Arch Otolaryngol 1984;110:450-453)

Abstract: In a sewing machine, particularly an industrial sewing machine, with a needle which can be driven up and down by means of a needle bar, a feed dog for the forward transfer of the workpiece in co-ordination with the needle movement, an actual feed rate sensing device which supplies a corresponding electric signal and at least one sensor for detecting a workpiece edge, for the purpose of increasing the accuracy of the positioning of the corner stitch of a seam portion with acceptable constructional expenditure, a device is provided for displacing the longitudinal axis of the needle parallel to the sewing direction as a function of the actual feed rate sensing device on the one hand and the detection of a workpiece edge by the sensor on the other. Such a sewing machine is operated according to a method in which a seam is sewn with a predetermined speed, a predetermined stitch length and a predetermined distance from its end point to a material edge, the actual stitch length is determined and after a sensor has detected a workpiece edge a stitch length correction is brought about by displacing the needle axis, if the seam portion still to be sewn cannot be divided with substantially no residue by the actual feed length per stitch.

Abstract: Reconstruction of tumor defects with local flaps after surgery of skin cancer is an important domain of dermatologic surgery. In a variety of random pattern flaps, such as V–Y-plasty, W-plasty, or rotation flaps, a fixation of flap tips by using the Gillies corner stitch (i.e., 3-point corner stitch) is performed. The Gillies technique consists of a half-buried horizontal mattress suture, which should result in an apposition of the skin flap tip to recipient wound corners (Figure 1). If correctly performed, the corner stitch is believed to provide a lower risk of flap tip necrosis and to result in a better esthetic outcome compared to other closure techniques. Our clinical experience with this technique, however, has shown that even if carefully performed, the flap tip often is positioned deeper than the surrounding wound corners, with possible subsequent depressed scar with poor esthetic outcome.

Abstract: The invention discloses a corner stitch of artificial stone, comprising the body of corner stitch and edging strip (1). The body of corner stitch comprises external corner stitch (2) and inner corner stitch (3), characterized in the fixed connection of edging strip (1) and the body of corner stitch; the components of said body of corner stitch include (percentage by weight): unsaturated polyester resin in 22-77 %, filling material in 28-74 %, hardener in 0.2-1.5 %, accelerant in 0.2-1.5 %, and pigment in 0.1-2 %. The invention has following characteristics and advantages: high level of product, bright surface, various kinds of color, the inner and outer corner stitch can meet the constructive requirement of wall corner, and common sand paper can change the size with finished produce.