Abstract: A needleless syringe capable of accelerating particles into a target surface is provided. The syringe comprises a body having a lumen with a diaphragm located adjacent to a terminus thereof. Particles are delivered from an external surface of the diaphragm by means of the motive force provided by the impact of a shockwave imparted to the internal surface of the diaphragm. A method for delivering particles from the needleless syringe is also provided.

Abstract: A needleless syringe capable of accelerating particles into a target surface is provided. The syringe comprises a body (20, 21, 22) having a lumen with a diaphragm (26) located adjacent to a terminus thereof. Particles are delivered from an external surface of the diaphragm (26) by means of the motive force provided by the impact of a shockwave imparted to the internal surface of the diaphragm. A method for delivering particles from the needleless syringe is also provided.

Abstract: A necktie and separate pre-formed knot that may be slid into position onto the necktie body and securely maintained in position without slipping. A knot is formed from a generally trapezoidally shaped assembly that is first folded over on itself so that its angled ends overlie one another. The overlying angled ends are secured to one another along a seam offset from the edges of the angled ends so as to define a margin or wing portion between the seam and the edges of the angled ends. The resulting folded and closed assembly is then turned inside out to form the finished knot. The wing portion protrudes into the central opening of the knot to engage the necktie body and hold the knot securely in place on the necktie body. The trapezoidally shaped assembly from which the knot is formed is itself formed of a foundation member and a fabric wrapped around the foundation member. Knots of different styles are described emulating, for example, the common four-in-hand, half-windsor and full-windsor knots.