69 results about "Pen Injector" patented technology

Smart sensors are employed to determine one or more of drug identification, dose, flow rate, concentration, agglomeration, and degradation and / or other characteristics of drug administration that can be detected via sensing technology. A smart sensor(s) can be coupled to or retrofitted onto injection pen injectors and / or drug delivery cartridges and / or infusion sets or cannulae, enabling infusion sets, pen injector systems or drug delivery cartridges to improve tracking of drug self-administration and stop medication errors that occur primarily through self or automated injection (e.g., due to incorrect or incomplete dosing, excessive dose or rate, incorrect drug, or drug degradation).

A pen needle shield system according to the invention comprises at least an injection end shield positioned on the injection side of the hub, shielding the injection end of the needle after an injection, or in the event of an accidental triggering. The injection end shield is compressed toward the hub against the pressure of a biasing spring. The injection end shield engages a sleeve, which is arranged coaxially on the hub such that after the injection is administered the biasing spring pushes the injection end shield to cover the injection end of the needle, carrying the sleeve with it. The sleeve engages the hub, locking out the injection end shield in a position in which the injection end of the needle is covered by the injection end shield. The system also may incorporate a non-injection end shield that engages with the hub when the pen injector is unscrewed from the hub to lock out the non-injection end shield in the position protecting the non-injection end of the needle.

A safety shield system for a pen needle according to the invention has a first passive safety shield for the injection end of a needle, covering the needle before and after use, and a second passive safety shield for the non-injection end of the needle, covering the non-injection end of the needle before and after use, and locking in the covering position when the pen injector is removed.

A disposable pen needle assembly for affixing to a pen injector for injecting a medicament, such as insulin, into a user. The pen needle assembly includes a needle that is sealed within a hub such that a proximal end of the needle is retained within the hub and enclosed by a peel-off hub inner seal. The opposite end of the needle extends outwardly for injecting the medicament. There is a sealed chamber external of the peel-off hub inner seal that contains a swab soaked with an antiseptic material. An outer removable seal, that also can be a peel-off seal, covers the sealed chamber containing the swab so that the user can simply remove the outer seal to gain access to the swab for cleansing the potential injection site. After swabbing the injection site, the hub seal is then also peeled off to access the needle for use in conventional manner.

A drug delivery device is provided herein which includes a tubular body having a proximal end and a distal end, the tubular body defining an opening at or in proximity to the distal end, the opening defining an inner diameter. A drug cartridge is also provided having a proximal end, a distal end and a barrel portion disposed therebetween. The distal end of the drug cartridge is larger in diameter than the inner diameter of the opening. The drug cartridge is inserted into the tubular body to a use position by first inserting the proximal end of the drug cartridge into the opening. The distal end of the drug cartridge limits insertion of the drug cartridge into the tubular body due to the interengagement of the distal end of the drug cartridge and the tubular body. With the drug cartridge being in the use position, the distal end of the drug cartridge is located at least partially externally of the tubular body. The medical pen injector of the subject invention further includes an adaptor engageable with the body. The adaptor encompasses the distal end of the drug cartridge with the drug cartridge being in the use position. The adaptor includes features for mounting a needle assembly thereto. Advantageously, with the subject invention, a drug cartridge having a large distal end may be accommodated with a drug delivery device, e.g., a pen injector type device.

A pen injector includes a vial cartridge and a generally tubular body that surrounds the vial cartridge. A needle shield assembly is removably mounted to a mounting end of the body and includes a hollow needle that has a tip for injecting into a patient. A needle hub at least partially surrounds the hollow needle and a slideable sleeve is slideably mounted on the needle hub. The needle hub has an outer surface which deflects the slideable sleeve as the slideable sleeve slides toward a receiving end of the needle hub and into a retracted position. The slideable sleeve bears resiliently on the outer surface of the needle hub during sliding movement of the slideable sleeve relative to the needle hub toward the retracted position such that a restoring force is generated for urging the slideable sleeve to move toward an injection end of the needle hub and into an extended position in which the tip of the needle is located completely inside of the slideable sleeve.

A pen needle according to the invention comprises a needle hub having a recess for a pen injector and vial. When the pen injector is loaded into the hub, the needle cannula mounted in the hub pierces the septum of the vial. A non-patient end (non-injection end) shield positioned in the hub member engages the pen injector and travels with the pen injector when the pen injector is removed, to shield the non-patient of the needle. The shield is locked into place securing the person administering the injection from accidental injury from the non-patient end of the needle.

Adapters for utilizing a syringe or pen injector with a subcutaneous injection port to deliver a therapeutic substance through the injection port and methods of using the adapters are provided. A syringe adapter has a body having a first end and a second end. The first end of the body is configured to receive and engage the end of a syringe so that the cannula of the syringe is held at a fixed position with the respect to the adapter. The second end of the adapter configured to mate with a mating portion of the injection port. When the second end of the adapter engages the mating portion of the injection port, the adapter assures that the cannula of the syringe is properly aligned with the subcutaneous injection port and assures that the cannula penetrates the injection port to the proper depth. Adapters for use with pen style delivery systems are also disclosed. Additionally, an adapter to facilitate loading a syringe with a therapeutic substance from a vial is disclosed.

The invention provides a pen injector, which comprises a medicine bottle mounting part, a retaining plug assembly and a metering and injection assembly. The metering and injection assembly comprises a drum support, a push rod drum, a connecting cylinder, a sleeve stud and a push rod, wherein the drum support is tubular, and the inner wall of the drum support is provided with thread-shaped chutes; the push rod drum is movably arranged in the drum support along the axial direction of the drum support; the outer wall of the push rod drum is provided with spiral retaining strips matched with the thread-shaped chutes; the second end of the push rod drum is protruded at the second end of the drum support and is connected with a rotary operation part; the connecting cylinder is arranged in the push rod drum; the first end of the connecting cylinder is abutted with a first limit step; the second end of the connecting cylinder is connected with a press operation part; the sleeve stud and the connecting cylinder are synchronously and rotatablely arranged in the connecting cylinder and are invariable in position along the axial direction and relative to the drum support; the sleeve stud is provided with a threaded through hole; and the push rod movably penetrates in the sleeve stud along the axial direction. The pen injector provided by the invention not only can be recycled and can be regulated in injection quantity but also is simple in operation and convenient in use.

A fuel injector (36) for alternate fuels (26A, 26B) with different energy densities. Vanes (47B) extend radially from a fuel delivery tube structure (20B) with first and second fuel supply channels (19A, 19B). Each vane has first and second radial passages (21A, 21B) communicating with the respective fuel supply channels, and first and second sets of apertures (23A, 23B). The first fuel supply channel, first radial passage, and first apertures form a first fuel delivery pathway providing a first fuel flow rate at a given fuel delivery pathway backpressure that is essentially common to both sets of fuel delivery pathway apertures. The second fuel supply channel, second radial passage, and second apertures form a second fuel delivery pathway providing a second fuel flow rate that may be at least 1 about twice the first fuel flow rate at the given fuel delivery pathway backpressure.

A pen-type injector for receiving a medication containing member. The injector comprises a housing (1) and a torsion spring (4) contained within the housing and coupled to a drive member (8). A dose setting knob (2) is coupled to the spring (4), and rotatably coupled to the housing (1) such that rotation of the knob relative to the housing in a first direction results in compression or twisting of the spring. A user actuable trigger (12) is provided for releasing the spring (4) to push the drive member (8) through the housing (1). A user actuable button (6) is coupled to the housing (1) for axial motion relative thereto, said button (6) being coupled to the torsion spring (4) to cause the spring to unwind or expand in discrete steps with each press of the button.

A safety shield system for a pen needle according to the invention has a first passive safety shield for the injection end of a needle, covering the needle before and after use, and a second passive safety shield for the non-injection end of the needle, covering the non-injection end of the needle before and after use, and locking in the covering position when the pen injector is removed.

In one aspect, a fixturing member for fixing a source of flowable material relative to a pen injector so as to permit introduction of the flowable material into the pen injector is provided herein. The fixturing member includes a body having a web with opposing proximal and distal faces. A distal wall extends distally from the distal face of the web, with the distal wall at least partially encompassing a distal chamber. Features are formed on the body for removable mounting onto a pen injector. Also, features are formed on the body for mounting onto a source of flowable material, A cannula extends through the web the cannula having proximal and distal ends with a lumen extending therebetween. The distal end of the cannula is located in the distal chamber and positioned such that, with the member being mounted to a pen injector, the distal end is located to be in the pen injector. The proximal end of the cannula is located proximally of the proximally face of the web such that, with the member being mounted to a source of flowable material, the proximal end of the cannula is located to be in communication with the flowable material. Advantageously, with the subject invention, a fixturing member is provided which facilitates mixing of substances in a pen injector in preparing a pen injector for injection.

The invention relates to the technical field of medicaments, and particularly relates to a composition for teriparatide injection, and a preparation method and preparation thereof. The composition for teriparatide injection comprises teriparatide, a freezing and drying protecting agent and a pH regulator, wherein the mass ratio of the teriparatide to the freezing and drying protecting agent is 1:(10-100000). The composition for teriparatide injection is simple in formula; the freezing and drying protecting agent ensures that the teriparatide is not degraded in preparation and preservation processes; and the pH regulator is used for regulating the pH value in a preparation process and regulating the pH value after the composition for teriparatide injection is redissolved, so as to maintain the stability of the teriparatide. The used auxiliary materials are safe, and do not cause toxic reaction. Therefore, the composition for teriparatide injection provided by the invention is good in stability, simple and reasonable in formula, and good in redissolving performance, and can be prepared into powder-injection or injection and is needless to be prepared into a pen-type injector. Thus, the production technology is simple.

Adapters for utilizing a syringe or pen injector with a subcutaneous injection port to deliver a therapeutic substance through the injection port and methods of using the adapters are provided. A syringe adapter has a body having a first end and a second end. The first end of the body is configured to receive and engage the end of a syringe so that the cannula of the syringe is held at a fixed position with the respect to the adapter. The second end of the adapter configured to mate with a mating portion of the injection port. When the second end of the adapter engages the mating portion of the injection port, the adapter assures that the cannula of the syringe is properly aligned with the subcutaneous injection port and assures that the cannula penetrates the injection port to the proper depth. Adapters for use with pen style delivery systems are also disclosed. Additionally, an adapter to facilitate loading a syringe with a therapeutic substance from a vial is disclosed.

An intradermal injection adapter includes a body having a longitudinal axis and a central portion located distally relative to the body along the longitudinal axis. The central portion has a cannula channel therethrough extending generally parallel to the longitudinal axis. A cannula within the cannula channel has a sharpened tip for injection into a patient and a sharpened opposite proximal end for injection into a pen injector. A distal protrusion has a first skin contacting surface extending generally parallel to the longitudinal axis. The first skin contacting surface is spaced from the cannula such that a distal portion of the cannula extends generally parallel to the first skin contacting surface.

The invention relates to pharmaceutical glass, in particular to a borosilicate glass sleeve for a pen type syringe and a preparation method of the borosilicate glass sleeve. The borosilicate glass sleeve is characterized by comprising chemical composition of SiO2, Al2O3, B2O3, K2O, Na2O, CaO, MgO, BaO and Fe2O3. The preparation method includes steps: firstly, using a forming machine to forming the pharmaceutical neutral borosilicate glass sleeve; secondly, annealing the formed glass sleeve in an electric annealing furnace; thirdly, visually checking the glass sleeve, and fourthly, packaging and storing. The borosilicate glass sleeve and the preparation method have the advantages that the glass performance can reach the first-level waterproof requirement by means of the materials and the preparation method, content of silica, alumina and boron trioxide is high, and content of alkali metallic oxide is low, so that high chemical stability, thermal stability and mechanical strength or products can be guaranteed.

The invention relates to a fuel injector (1) having a high pressure region (32) which contains fuel that is under high pressure during operation, and a low pressure region (38) in which a lower pressure is present during operation than in the high pressure region (32). A sensor (12) is located in the low pressure region (38) and a transmission means (9) is arranged such that a force which is equal to the pressure of the fuel in the high pressure region (32) is exerted on the sensor (12) at least some of the time.

The invention relates to an engaging and disengaging mechanism of a pen type syringe. The engaging and disengaging mechanism is convenient to use and capable of rapidly replacing a charge pipe. The engaging and disengaging mechanism comprises a shell, a screw, a transfer pipe, the charge pipe and a driving mechanism driving the transfer pipe to rotate; the tail part of the transfer pipe of which the front end face is provided with engaging and disengaging teeth extends into the shell through the bottom of a connecting base to be connected with the driving mechanism, and an engaging and disengaging area is formed by the connecting base which is buckled with a buckle base and the buckle base in an enclosing mode; an engaging and disengaging spring, an engaging and disengaging ring and an axial push ring with two axial push feet are arranged in the engaging and disengaging area in sequence; teeth are arranged on the engaging and disengaging ring, and the engaging and disengaging teeth are arranged on the transfer pipe; the axial push feet on the axial push ring penetrate through the bottom of the buckle base to extend into an inner cavity of the buckle base, the screw penetrates through the engaging and disengaging ring and the axial push ring to be coupled with an internal thread in the buckle base and then engaged with a push head for fixation; a convex rib extending into an axial groove of the screw surface is arranged on the engaging and disengaging ring, the front part of the charge tube internally provided with a piston extends into the inner cavity of the buckle base, and the opening of the charge tube is provided with engaging wings clamped into spiral guide grooves of the buckle base.

A container separates a needle unit from a pen syringe and houses the needle unit. An insertion opening that receives a needle unit has an inner diameter slightly smaller than the outer diameter of the needle unit. When a user inserts the needle unit of a used pen syringe into the insertion opening and rotates the syringe against the needle unit fixed by the linear protrusions inside the insertion opening engaging with the linear protrusions around the needle unit in the rotational direction, the syringe is unscrewed from the needle unit. When the closer is closed while the separated needle unit remains in the insertion opening, a pusher provided on the lower surface of the closer pushes the needle unit downward and drops the needle unit into the container body.

The present invention is directed to a cartridge holder (6) for a drug delivery device with snap fastening connection means to fasten the cartridge holder to a housing (1) of the drug delivery device, wherein the fastening connection means are provided with at least on basically rectangular window (15) for receiving a locking element (4) of said housing. The invention is further directed to a pen-type injector equipped with a respective snap fastening connection for the cartridge holder (6).

Described herein is an intracameral therapeutic agent delivery device in the form of a pen-injector comprising a cartridge container for dispensing multiple doses of a medicament, coupled to an actuation assembly within a housing. A needle assembly is coupled to the distal end of the cartridge container, provided with a removable cap received within the housing will be in optional pre-sterile or no-sterile condition. Use of such device for the prevention or treatment of ocular conditions or diseases is also disclosed.

A process formula and a preparation method of a piston for a pen type syringe belong to the field of officinal syringe pistons. The piston is characterized by being prepared by the following raw materials by weight: 44500 parts of chlorinated butyl rubber, 41500 parts of calcined kaolin, 655 parts of tertiary octyl phenol formaldehyde resin, 480 parts of stearic acid, 2260 parts of zinc oxide, 880 parts of modified polyethylene, 1180 parts of titanium dioxide, 156 parts of half-reinforcing furnace black and 60 parts of magnesium oxide. The preparation method is characterized by including (1) dosing and banburying; (2) placing the mixture statically for 1 to 10 days; (3) pre-forming; (4) placing the mixture statically for 12 hours to 10 days; (5) conducting vulcanizing heat forming in 0.3-million-grade clean area environment; (6) conducting edge removing in the 0.3-million-grade clean area environment; (7) conducting scrap screening in 0.1-million-grade clean area environment; and (8) conducting washing, silicification, drying and packaging in myriad-grade clean area environment. The process is simple, safe, environment-friendly and high in cleaning degree.

The invention relates to a high-precision pen-type injector which comprises an injection button, a dose adjusting knob, an engaging and disengaging ratchet, an engaging and disengaging spring, a spiral sleeve, a screw, a spiral ratchet, a fixed ratchet wheel assembly, a main body upper housing, a reset rotary knob, a reset spring, a cartridge case bin and a dose display sleeve. The screw is in threaded connection with a threaded hole of the spiral ratchet, a matched plane is arranged on the screw, the reset rotary knob is provided with a flat reset rotary knob hole matched with the screw, thereset rotary knob is installed on the screw through the reset rotary knob hole, a second one-way ratchet is arranged on the end face of the reset rotary knob, a first one-way ratchet matched with thesecond one-way ratchet is arranged on the fixed ratchet wheel assembly, one end of the reset spring abuts against the reset rotary knob, the other end of the reset spring abuts against the fixed ratchet wheel assembly, and the cartridge case bin is fixedly connected with the end of the main body upper housing. The high-precision pen-type injector saves effort in injection and is high in injectionprecision.

The invention relates to a piece of medical glass, in particular to a borosilicate glass sleeve for a pen-type injector and a preparation method thereof. The borosilicate glass sleeve is characterized by comprising the following chemical compositions: SiO2, Al2O3, B2O3, K2O, Na20, CaO, MgO, BaO and Fe2O3. The method comprises the following steps: (1), forming the medical neutral borosilicate glass pipe through a forming machine; (2), allowing the formed glass sleeve to be subjected to annealing in an electric annealing furnace; (3), then allowing the glass sleeve to be subjected to an appearance test; (4), finally, packaging and putting in storage. The method has the advantages that the formula and the preparation method ensure that the glass performance reaches A-level water resistance requirement; the respective content of silicon dioxide, aluminium oxide, diboron trioxide is high; the content of alkali metal oxide is low; and the product is ensured to have higher chemical stability, thermal stability and mechanical strength.

The invention discloses a pen type syringe needle simply packaged and a use method of the syringe needle. The syringe needle comprises at least one needle body and at least one packaging body used for packaging the needle body. Each needle body comprises a needle base, a needle tube and an inner protecting cap, wherein the needle base, the needle tube and the inner protecting cap are sequentially connected. Each packaging body comprises a packaging cup and seal paper. Each packaging cup is provided with at least one cavity matched with the corresponding needle body. At least one axial protrusion is arranged on the outer peripheral face of each needle base. Grooves connected with the axial protrusions in a matched mode are formed in the inner walls of the cavities. The edges of the upper portions of the cavities are arranged to be planes. The seal paper is connected with the planes in a matched mode. By means of the mode, the pen type syringe needle simply packaged and the use method of the syringe needle enable the whole production process to be simpler and easier to implement and the sealing process to be easier, remarkably improve the reliability of sterility sealing, reduce the product cost greatly, are particularly suitable for batch production, and have high economic value.

An intradermal injection adapter includes a body having a longitudinal axis and a central portion located distally relative to the body along the longitudinal axis. The central portion has a cannula channel therethrough extending generally parallel to the longitudinal axis. A cannula within the cannula channel has a sharpened tip for injection into a patient and a sharpened opposite proximal end for injection into a pen injector. A distal protrusion has a first skin contacting surface extending generally parallel to the longitudinal axis. The first skin contacting surface is spaced from the cannula such that a distal portion of the cannula extends generally parallel to the first skin contacting surface.