Abstract: An injection needle assembly including an injection needle, which can pierce body tissue, and a needle guide, which can be placed on the body tissue and axially stabilizes the injection needle against flexure and cracking.

Abstract: A cannula, for introduction into a body tissue, the cannula flexible after introduction, and rigid below a critical temperature and flexible above the critical temperature. In a method for the introduction of the cannula into the body tissue, the cannula is cooled to a temperature below the critical temperature and introduced into the body tissue. After being introduced, the cannula is brought to a temperature above the critical temperature by warming and thus becomes flexible.

Abstract: An injection needle, for injection into a body tissue, is flexible in the introduced or post-inserted state and comprises a channel for the introduction of a fluid. The injection needle is at least partly made from at least one material which is rigid in one state and flexible in a second state. Alternatively or concurrently, the injection needle is rigid on application of a force to the needle along the longitudinal direction of a needle longitudinal axis and is flexible on application of a force in the radial direction relative to the needle longitudinal axis.

Abstract: An injection needle for introducing a product into a human or animal body, the needle including a distal needle section with a needle point and a proximal needle section, both sections formed along the injection needle such that the proximal needle section must penetrate the skin to introduce the product, the distal needle section having greater flexural rigidity than the proximal needle section.

Abstract: An injection needle assembly including an injection needle, which can pierce body tissue, and a needle guide, which can be placed on the body tissue and axially stabilizes the injection needle against flexure and cracking.

Abstract: A cannula, for introduction into a body tissue, the cannula flexible after introduction, and rigid below a critical temperature and flexible above the critical temperature. In a method for the introduction of the cannula into the body tissue, the cannula is cooled to a temperature below the critical temperature and introduced into the body tissue. After being introduced, the cannula is brought to a temperature above the critical temperature by warming and thus becomes flexible.

Abstract: An injection needle, for injection into a body tissue, is flexible in the introduced or post-inserted state and comprises a channel for the introduction of a fluid. The injection needle is at least partly made from at least one material which is rigid in one state and flexible in a second state. Alternatively or concurrently, the injection needle is rigid on application of a force to the needle along the longitudinal direction of a needle longitudinal axis and is flexible on application of a force in the radial direction relative to the needle longitudinal axis.