摘要:
A medicament injection device comprising: a main body; a medicament cartridge holder fixed with respect to the main body, wherein themedicament cartridge holder is configured to hold a medicament cartridge; a needle carrier carrying a needle, wherein the needle carrier is axially movable with respect to the main body; and a rotatable cap at a distal end of the device, wherein the cap comprises a first pre-stressed spring coupled to the needle carrier, wherein the cap is arranged so that rotational movement thereof causes release of the first pre-stressed spring thereby causing the needle carrier to move axially towards a proximal end of the device.
摘要:
The invention provides a drug delivery device comprising: a drug container, a needle coupled to the drug container, having a front end for insertion into a patient and a rear end for receiving drug from the drug container, a rupturable needle cover covering the front end of the needle, wherein, in use, the front end of the needle ruptures the needle cover prior to insertion into a patient, and a venting element, the venting element configured to allow air to escape from within the needle cover following rupture of the needle cover by the needle.
摘要:
Injectors are provided that may be pre-filled aseptically with an active biological agent into a sterile cavity and sealed in such a manner that the injectate may be readily expelled into the body. The injectors are particularly useful for injecting precisely measured small volumes of sterile agents.
摘要:
A device (10, 110, 210) for the expression of liquids, such as for the maintenance treatment of vascular catheters. A syringe (16; 116a; 116b; 216) has a support structure (15,215) and includes at least two separate compartments (11, 12; 111, 112; 211, 212) in which liquids for treating the lumen ( L,283) of a catheter ( C, 280) with which the device is associated. The syringe further includes a closure plug (13, 213) to be associated with the lumen being treated, which is coupled, by virtue of a releasable securement arrangement (14, 27, 258), to support structure (15, 215). At least one plunger (16; 116a, 116b; 216) is also included for infusing, in preset order, the different treatment liquids into the lumen to be treated, and the syringe further includes a duct (17, 217) which is in fluid communication with the two compartments and is arranged through a through hole through the closure plug (13, 213) in order to allow access of the treatment liquid to the interior of the lumen ( L, 283) upon activation of the plunger.
摘要:
An automatic injection and retraction syringe having a medicine cartridge, an injection assembly, and a retraction assembly is provided. The retraction assembly is selectively securable to the injection assembly to house the medicine cartridge. The retraction assembly includes an end cap, a hypodermic needle, a retraction spring, and an upper seal. The retraction spring is maintained in a partially compressed condition between the needle hub and the end cap. The upper seal is urged against a sealing surface by the retraction spring in the partially compressed condition to form a hermetic seal. In some embodiments, the injection assembly includes an injection spring, a plunger engaged to the injection spring, and a safety element to prevent the plunger from escaping the injection assembly if the injection spring is released from the normally stressed condition before the assemblies are secured to one another.
摘要:
An apparatus for administering a therapeutic is provided. In various embodiments, the apparatus includes a syringe (28) having a barrel (32) and a plunger (36) and having an ozone generator associated therewith. The generator is initiated and a therapeutic gas is accumulated within the barrel (32), at which point it can be delivered from the barrel (32) into a target site via a needle (24), thereby delivering therapeutic effects to that target site.
摘要:
A fixed needle syringe having a medicine compartment, a hypodermic needle, a piston, and a plunger is provided. The hypodermic needle is in fluid communication with the medicine compartment. The piston is slideably disposed in the medicine compartment. The plunger is secured to the piston. The plunger has a bore defined therethrough, where the bore allows access to the piston through the plunger.
摘要:
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that has a plug that is moved from a sealing position into a mixing position when the device is activated. The seal structure includes a wiper that scrapes the interior walls in the dry component compartment to prevent the dry component from accumulating at the seal/glass interface. A tapered insert "funnels" the mixed medicament components to an attached needle assembly, but can be removed when the device is filled. A filter is provided between the medicament compartments and the needle assembly. A chamber between the filter and the needle assembly allows for better flow through the filter. An actuation assembly drives the plug into the mixing position and forces the mixed medicament through the needle and into the user.
摘要:
The invention relates to an improved syringe designed for effecting complete transfer of contents retained within the syringe. The improved syringe contains a rupturable fluid-filled bladder that is retained within the chamber of the syringe. When ruptured the bladder discharges the fluid retained therein and washes the interior of the chamber and component parts.