163 results about "Self injection" 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).

Aspects of the disclosure relate generally to a circuit for sustaining an radio frequency (RF) modulated optical signal. The circuit may comprise a self injection locking component having a fiber optic delay line over which a portion of the optical signal propagates. The circuit may also comprise a self phase locked loop component having at least two fiber optic cables having different lengths and over which another portion of the optical signal propagates and a phase detector coupled to the at least two fiber optic cables and configured to determine a phase difference between the signals propagating over one of the respective fiber optic cables. The circuit may further comprise a voltage controlled oscillator configured to generate a stable oscillating signal in response to signals generated by each of the self injection locking and self phase locked loop components, the stable oscillating signal being configured to sustain the optical signal.

Self-injection system allows a user to inject a drug from a cartridge carrying unique identification information, into any one of a plurality of injection sites. Tissue at each injection site is associated with at least one injection parameter, such as flow-rate, that is different for each site. A scanner reads the identification information of the cartridge and cooperates with a central processing unit to determine the validity of the drug in order to permit an injection procedure to commence. The central processing unit has a memory for storing the different injection parameters and controls a drive unit for driving fluid from the cartridge and through a needle into the selected tissue, at the injection parameter that is associated with the user selected tissue for the injection.

Disclosed are a wavelength division multiplexing-passive optical network (WDM-PON) system using self-injection locking, an optical line terminal thereof, and a data transmission method. A wavelength division multiplexing-passive optical network (WDM-PON) system according to an aspect of the invention includes an optical line terminal. The optical line terminal includes a reflector that is installed at the input side of a multiplexer and reflects an optical signal having a predetermined wavelength, and a light source that generates a multimode optical signal to transmit the generated multimode optical signal to the multiplexer through the reflector, receives reflected light by the reflector, and oscillates at a wavelength of the received reflected light. According to the aspect of the invention, it is not necessary to separately control the temperature of a light source for a downstream signal, and stable communication can be performed by collectively controlling wavelengths of downstream channel optical signals for downstream channels through temperature control of the multiplexer.

A wavelength division multiplexed-passive optical network includes an optical line terminal for generating downstream optical signals of discrete wavelengths and for receiving upstream optical signals of discrete wavelengths, a remote node, coupled to the optical line terminal, a wavelength division unit settled to reflect a predetermined wavelength, and a plurality of optical network units. Each optical network unit has an optical source which is oscillated in a multi-mode and is self-injection locked by the predetermined wavelength provided thereto, thereby to generate the upstream optical signal in a single mode to be provided to the remote node.

A self-injection device (100, 200), including a pen body (108, 208) connectable to a pen needle (10), and a cap (104, 204) selectively connectable to the pen body (108, 208) in a first orientation with respect to the pen body (108, 208) to minimize the length or volume of the self injection device (100, 200), and in a second orientation to provide sufficient length or volume in an interior of the cap (104, 204) to house a pen needle (10) connected to the pen body (108, 208).

Self-injection system allows a user to inject a drug from a cartridge carrying unique identification information, into any one of a plurality of injection sites. Tissue at each injection site is associated with at least one injection parameter, such as flow-rate, that is different for each site. A scanner reads the identification information of the cartridge and cooperates with a central processing unit to determine the validity of the drug in order to permit an injection procedure to commence. The central processing unit has a memory for storing the different injection parameters and controls a drive unit for driving fluid from the cartridge and through a needle into the selected tissue, at the injection parameter that is associated with the user selected tissue for the injection.

An optical transceiver apparatus includes a gain medium, a photoelectric converter, at least one AWG, and a partial reflection mirror. The at least one AWG includes two common ports and multiple branch ports. One of the two common ports functions as a signal sending port, and the other functions as a signal receiving port, where bandwidth of the signal sending port is less than that of the signal receiving port. The gain medium and the photoelectric converter are connected to one of the branch ports of the AWG. The AWG and the partial reflection mirror are configured to cooperatively perform wavelength self-injection locking on an optical signal provided by the gain medium, and output the optical signal through the signal sending port. The AWG is further configured to demultiplex an optical signal received by the signal receiving port to a branch port. A WDM-PON system is also provided.

A drug delivery device (500), including a body (504) having a needle opening (508) and a reservoir (164, 176) disposed therein for containing a medicament, and an injection needle (152) for penetrating the skin of a patient, the needle (152) providing a path for the medicament between the reservoir (164, 176) and the patient, and selectively protruding from the body (504) through the needle opening (508). The device (500) also includes safety means (576, 548, 552, 532, 512) for automatically retracting the needle (152) within the body (504) and covering the needle opening (508) upon removal of the device (500) from the patient.

Disclosed is a dense wavelength division multiplexing-passive optical network (DWDM-PON) system utilizing self-injection locking of Fabry-Perot laser diodes, in which output optical signals of different wavelengths are partially fed back by a partial mirror, so as to injection-lock the Fabry-Perot laser diodes, respectively. In accordance with this system, inexpensive Fabry-Perot laser diodes can be used as respective light sources of a central office and optical network units (ONUs). Accordingly, it is possible to minimize the system construction costs, as compared to conventional optical networks.

Disclosed is a dense wavelength division multiplexing-passive optical network (DWDM-PON) system utilizing self-injection locking of Fabry-Perot laser diodes, in which output optical signals of different wavelengths are partially fed back by a partial mirror, so as to injection-lock the Fabry-Perot laser diodes, respectively. In accordance with this system, inexpensive Fabry-Perot laser diodes can be used as respective light sources of a central office and optical network units (ONUs). Accordingly, it is possible to minimize the system construction costs, as compared to conventional optical networks.

The embodiment of the invention discloses a self-injection locking light source which comprises a polarized light splitter as well as a first self-injection locking laser and a second self-injection locking laser which are coupled with the polarized light splitter, wherein the polarized light splitter is used for carrying out polarized coupling on polarized light provided by the first self-injection locking laser and the second self-injection locking laser and polarized light splitting on received reflected light, and respectively providing the split light for the first self-injection locking laser and the second self-injection locking laser; and the polarization directions of the first self-injection locking laser and the second self-injection locking laser are respectively aligned to the two polarization directions of the polarized light splitter. The embodiment of the invention also provides a light source self-injection locking method and system as well as a wavelength division multiplexing passive optical network system.

A device (100) for delivering a medicament into a patient's body by injection into or through the patient's skin, including: a main body having a bottom enclosure (104) that has a top surface including a button guide latch (268); a reservoir (160) disposed within the main body for containing the medicament; an injection needle (152) for penetrating the skin of the patient, the needle (152) having a lumen and communicating with the reservoir (160) when the device (100) is activated; a pressurizing system (140, 144) for pressurizing the reservoir (160) when the device (100) is activated; and an activator button (128) movably disposed on the main body and movable from a pre-activated position to an activated position. The activator button (128) includes an activation arm (228). When the activator button (128) moves from the pre-activated position to the activated position, an end of the activation arm (228) engages with the button guide latch (268) and prevents return movement of the activator button (128).

A device (100) for delivering a medicament into a patient's body by injection into or through the patient's skin includes a body (104, 116) having a reservoir (160) disposed therein for containing the medicament, an injection needle (152) for penetrating the skin of the patient, the needle (152) having a lumen and communicating with the reservoir (160), and a pressurizing system for pressurizing the reservoir (160). The device also includes indicator means (124) visible outside the device (100) for indicating that delivery of the medicament is substantially complete.

A self-injection device includes a visual indicator for visually indicating that a main body and a cartridge holder are properly connected to each other. In one embodiment, the visual indicator includes a visual marking on the cartridge holder and a visual marking on the main body, such that when the cartridge holder and the main body are properly connected, the visual markings are aligned with each other. A self-injection device that includes an indicator for a dose window is also disclosed.

A drug delivery device, including a body having a reservoir disposed therein for containing a medicament, the reservoir including a flexible wall; a plunger movable within the body for causing the medicament to be expelled from the reservoir, the plunger having a contact surface that is not affixed to said flexible reservoir wall; a spring biasing the plunger toward the reservoir; and means for selectively maintaining the plunger in a pre-activated position with respect to the reservoir and, upon releasing the plunger from the pre-activated position, for guiding the plunger to move under the force of the spring such that the contact surface of the plunger contacts the flexible reservoir wall to pressurize the reservoir for delivery of the medicament to a patient.

A drug delivery device (100), including a body (104, 116) having a reservoir (164, 176) disposed therein for containing a medicament and an injection needle (152) for penetrating the skin of a patient, the needle (152) providing a path for the medicament between the reservoir (164, 176) and the patient. The device (100) also includes a needle cover (114) for selectively covering the injection needle (152), an adhesive (264) for selectively adhering the device to the patient, a release liner (500) for selectively covering a patient side of the adhesive (264), and a connecting means (112, 520, 512, 508, 524) for connecting the needle cover (114) and the release liner (500) such that removal of one of the needle cover (114) and the release liner (500) from the device (100) removes the other one of the needle cover (114) and the release liner (500).

The invention relates to a system for realizing wavelength reuse of a self-injection wavelength division multiplexing passive optical network and a method thereof. The system is formed by an optical line terminal OLT connected with remote nodes RN through a feed fiber, and the remote nodes RN connected with a plurality of optical network units ONU, wherein 2n optical network units ONU are divided into a group I of the optical network units ONU and a group II of optical network units ONU, and the number of the optical network units ONU in each group is the same, while uplink signals and downlink signals of two groups of the optical network units ONU are just opposite and do not have interaction with each other; the remote nodes are connected with the two groups of the optical network units ONU respectively and realize downlink signal separation, uplink signal combination and generation and return of seed light of the two groups of the optical network units ONU. The method realizes wavelength reuse by the system, divides the usable wave band into a wave band A and a wave band B, wherein the group I of the optical network units ONU carries the uplink signal and the seed light thereof by the wavelength of the wave band A, carries the downlink signal by the wavelength of the wave band B, while the group II of the optical network units ONU are just the opposite, thereby reusing the uplink signal and the downlink signal of the group I of the optical network units ONU by the group II of the optical network units ONU, not only avoiding that the seed light and the downlink signal cannot be separated by the optical network units ONU due to the fact that the seed light and the downlink signal are in the same wave band and are aliased with each other, but also realizing doubling of the number of the optical units ONU supported by the system and the wavelength utilization ratio.

A drug delivery device (100), including a body (104, 116) having a reservoir (164, 176) disposed therein for containing a medicament and an injection needle (152) for penetrating the skin of a patient, the needle (152) providing a path for the medicament between the reservoir (164, 176) and the patient. The device (100) also includes a needle cover (114) for selectively covering the injection needle (152), an adhesive (264) for selectively adhering the device to the patient, a release liner (500) for selectively covering a patient side of the adhesive (264), and a connecting means (112, 520, 512, 508, 524) for connecting the needle cover (114) and the release liner (500) such that removal of one of the needle cover (114) and the release liner (500) from the device (100) removes the other one of the needle cover (114) and the release liner (500).

The present invention is directed to an automatic reconstitution drug delivery device. The inventive device effects simple and automatic reconstitution of a dry drug. To effect reconstitution, a user displaces a release button which causes first and second chambers of a drug cartridge to communicate, resulting in automatic mixing of a diluent and dry drug to effect reconstitution of the dry drug. The user then simply sets the dose volume using a dose-setting mechanism, and administers the injection in a manner typical of self-injection drug delivery devices. Whole or partial automatic priming can be also achieved by the device.

The invention provides a high-quality tunable photoproduction microwave source based on a semiconductor double-module laser. The microwave source comprises an amplification feedback laser, a three-port optical circulator, an optical coupler, an optical fiber amplifier and a polarization controller, wherein a port 2 of the optical circulator is connected with the amplification feedback laser, a port 1 of the optical coupler is connected with a port 3 of the optical circulator, the input end of the optical fiber amplifier is connected with a port 2 of the optical coupler to enable the feedback strength to be larger than a threshold value of self-injection locking of the amplification feedback laser, the input end of the polarization controller is connected with the output end of the optical fiber amplifier, the output end of the polarization controller is connected with a port 1 of the three-port optical circulator, and the polarization controller is used for controlling the polarization state of feedback signals, injected back by a feedback circuit, of the amplification feedback laser. The microwave source can overcome the defects of the stability and the line width of the microwave signals generated by the double-module laser, the high-quality microwave source with the tunable narrow line-width can be generated without using an external microwave source as a standard, and the microwave source has the advantages of being high in integration level, compact in structure, good in stability, simple in manufacturing process, low in cost and easy to realize.

A drug delivery device (100) includes a body (102, 116) having a reservoir (160) disposed therein for containing a medicament and an injection needle (152) for penetrating the skin of a patient, the needle (152) providing a path for the medicament between the reservoir (160) and the patient. The device (100) also includes a plunger (144) movable within the body (102, 116) for causing the medicament to be expelled from the reservoir (160), and a biasing means (140) for biasing the plunger (144) toward the reservoir (160), wherein in a pre-activated position, the biasing means (140) telescopes within itself, and upon activation, provides a force to the plunger (144) for expelling the medicament from the reservoir (160). The biasing means (140) is preferably provided in the form of a conical spring having a variable pitch.

The present invention details fabrication guidelines of integrated optoelectronic oscillators with frequency and phase stability, having higher frequency selectivity in a relatively small size (compared to the larger size of a higher order electrically realized RF filter), reduced temperature sensitivity, and minimized frequency drift. The integrated photonic components and RF oscillator may use Silicon photonics and microelectronic integration using CMOS and BiCMOS technology, eliminating the need for bulky and / or discrete optical and microwave components.

Disclosed are a wavelength division multiplexing-passive optical network (WDM-PON) system using self-injection locking, an optical line terminal thereof, and a data transmission method. A wavelength division multiplexing-passive optical network (WDM-PON) system according to an aspect of the invention includes an optical line terminal. The optical line terminal includes a reflector that is installed at the input side of a multiplexer and reflects an optical signal having a predetermined wavelength, and a light source that generates a multimode optical signal to transmit the generated multimode optical signal to the multiplexer through the reflector, receives reflected light by the reflector, and oscillates at a wavelength of the received reflected light.; According to the aspect of the invention, it is not necessary to separately control the temperature of a light source for a downstream signal, and stable communication can be performed by collectively controlling wavelengths of downstream channel optical signals for downstream channels through temperature control of the multiplexer.

The invention provides a commonly-known direct-current self-injection type small-current grounding and route selecting system and method, which are applicable to trouble shooting of single-phase earth faults of a non-effective grounding system of a radiation type middle-voltage power grid and a low-voltage power distribution IT (Information Technology) system. The system comprises a direct-current signal collection unit, a signal processing and displaying unit, a direct-current signal automatic injection unit and a power supply transformer neutral point processing unit. According to the commonly-known direct-current self-injection type small-current grounding and route selecting system and method disclosed by the invention, under the realization condition of applying an electromagnetic voltage transformer, an injection method of a direct-current signal is simplified; special direct-current power supply equipment does not need to be arranged and the direct-current signal is not injected into a power grid under a normal operation condition; and only if the single-phase earth faults happen, the direct-current signal is automatically injected into the power grid, and the injection is simple and reliable and is easy to realize. A self-injection manner after half-wave rectification of zero sequence voltage is ingeniously utilized.

The present invention relates to an autoinjector device (10) for use in combination with a syringe (30), said syringe comprising a movable plunger; a needle; and a tubular needle shield (34). The claimed autoinjector device (10) comprises: an elongated housing having a proximal (11) and a distal end (12); a drive mechanism; a syringe holder (40) in order to support the fragile syringe and to prevent damage to the syringe. The invention furthermore relates to a method for assembly of the autoinjector device according to the invention.