Various exemplary methods, systems, and devices for injection pump needle mechanics are provided.

An injection needle assembly (50) for an injection device, comprising: a) a needle cannula (3) attached to a needle hub (4) and defining a pointed tip at a free end (3a, 3b), and b) a needle cover (10, 10a, 10b) forming an axially extending elongated flexible enclosure accommodating the needle cannula (3). The needle cover (10, 10a, 10b) is configured to axially collapse and become penetrated by the needle cannula (3) when a penetration force is applied to the needle cover. The needle cover (10, 10a, 10b) defines a shaft section (11a) and a bulb section (11b). The shaft section (11a) encircles the needle cannula (3) and extends axially from the needle hub (4) to the bulb section (11b). The shaft section (11a) comprises a collapsible wall area (15) having wall thickness t.sub.1 less than a predefined wall thickness t.sub.1,lim to provide radial deformability for abutting contact with the needle cannula (3). The bulb section (11b) comprises a wall area (17a, 17b) having a wall thickness t.sub.2 being greater than said predefined wall thickness t.sub.1,lim, and further defines a central end wall area (20) having a wall thickness t.sub.3 smaller than the wall thickness t.sub.2. In an initial non-penet-rated state, the needle cover (10, 10a, 10b) assumes a first configuration wherein the wall areas of the bulb section (11b) and the wall areas of the shaft section (11a) are spaced apart from the needle cannula (3).

The present invention relates to an injection needle assembly having opposite distal and proximal ends, and wherein the assembly comprises an injection needle having proximal and distal pointed ends, wherein the distal pointed end is arranged to penetrate a membrane arranged at the proximal end of a medicament container; a tubular needle holder comprising distal engagement means and proximal engagement means; a tubular cap comprising proximal outer engagement means and proximal inner engagement means; a tubular needle cover comprising first engagement means arranged to cooperate with the proximal engagement means, and second engagement means arranged to cooperate with the proximal outer engagement means of the cap; characterized in that said needle cover is arranged to be displaced from a first position wherein the second engagement means and the proximal outer engagement means prevents the needle cover and the needle holder to be axially displaced by a linear displacement, to a second position wherein the needle cover and the needle holder are distally displaced, and wherein the proximal inner engagement means of the cap and the distal engagement means of the needle holder prevents the needle holder to be proximally displaced but allows the needle cover to be distally displaced.

The present invention relates to methods for treating a microbial infection comprising administering a composition comprising one or more antibiotic compounds to the site of the infection by instilling the composition into the tympanostomy tube. A delivery cannula can be used to instill the composition into the tympanostomy tube.

A hollow needle, for use in medical and other areas where thin hollow needles are used to inject or aspirate fluids and gases, is provided and comprises of a thin, rigid tube body that is open on both ends and throughout the length with one sharp end. The needle body is designed and can be manufactured with a curved shape and or other geometric features, can be drawn to a desired curvature with heat, or can be curved afterwards, to specific specifications depending on the application. The needle so configured advantageously allows the user to circumvent an obstacle and or obstacles that otherwise inhibit direct linear access to a point-of-interest by providing a device that can take the sharp point of a needle on an indirect path towards the desired therapy delivery point.

The present disclosure relates to relates to medication injection devices, and in particular to systems and methods for on-demand delivery of a non-liquid medication from a wearable medication injection device. Particularly, aspects of the present invention are directed to a device that includes a housing defining a chamber, a piston disposed within the chamber, a needle disposed within the chamber on a first side of the piston, an energetic material disposed within the chamber on a second side of the piston, and a medication strip disposed within the needle. The medication strip includes an injectable substance in a non-liquid form.

A hollow needle includes a needle body made of an electrically conductive material, forming a cylindrical shape, and including a shaft part, a tip part connected with the shaft part, and an opening for discharging or drawing in a liquid in which a cavity communicating between the shaft part and the opening is formed. Also included is an annular insulating film made of an electrically insulative material, which exposes the opening and at least part of the tip part, and coats at least part of an outer circumferential surface of the shaft part.

An injection system and apparatus comprises a housing with a loading tray configured to accept a medication cartridge, a needle configured to transport medication from the medication cartridge to an injection site, a retractable sheath formed on an injection end of the housing, and a telescoping plunger comprising at least two telescoping sections, wherein the plunger is configured to impart downward force on the medication cartridge in order to release medication in the medication cartridge through the needle to an injection site.

A medical needle arrangement (100, 1000, 1400) is disclosed. The needle arrangement (100, 1000, 1400) comprises: a needle sheath (104, 002, 1402), and a needle (202, 1102, 1406) comprising: an elongated portion and a sealing member (204, 1003, 1403) being arranged to a front end of the elongated portion. The needle arrangement is adapted to bet set in: a closed position, in which the sealing member (204, 1003, 1403) is arranged to abut at least a portion of a front end surface of the needle sheath (104, 1002, 1402) thereby restricting intrusion of foreign matter in an area between the needle sheath and the needle, and an open position, in which a gap (1204, 1506) is formed between the sealing member (204, 1003, 1403) and the front end surface of the needle sheath (104, 1002, 1402). Embodiments include needle arrangement for injection, for aspiration, and for biopsy purposes.

Injector devices and methods for using them to deliver medicament into a patient's body, e.g., sub-retinally within an eye, are provided. The injector includes an injector cannula having a soft injector tip. A retractable tip protector tube is slidably disposed on the flow cannula between an extended position in which the tip protector tube covers the entire injector tip, and a retracted position in which the tip protector tube is retracted proximally thereby exposing at least part of the injector tip. Accordingly, the tip protector tube protects the injector tip from being damaged while advancing the injector tip to a target injection site.