233results about How to "Prevent reuse" patented technology

A medical grade deformer, comprising: an axial member; and a pliable tube mounted on said axial member and adapted to be deformed from a first, narrower diameter, configuration to a second, greater diameter, configuration.

The invention relates to a modular drug delivery system, comprising a reservoir unit and a control unit in combination with at least one further reservoir or control unit, whereby each combination of a reservoir unit and a control provides different capabilities. More specifically, the present invention provides a system for delivering a drug to a user, comprising a reservoir unit, a control unit, and at least one further reservoir unit or control unit, wherein each reservoir unit is adapted to receive at least one command from a control unit and perform an action in response thereto, and comprises a reservoir adapted to contain a liquid drug and includes, in a situation of use, associated outlet means. The system further comprises expelling means for expelling a drug out of the reservoir through the outlet means. Each control unit comprises control means providing one or more commands for controlling the operation of a reservoir unit, wherein each combination of a reservoir unit and a control unit is adapted to provide a system with different capabilities.

An apparatus and methods for delivering ocular implants or microimplants. The apparatus is ergonomically designed for ease of use, and a simple manual depression of an actuator produces proportional movement of a linkage causing the implant or microimplant to be ejected through a cannula disposed at the desired location in the eye. Small gauge cannulas are provided for self-sealing methods of delivery.

A fluid delivery device having a self-contained stored energy membrane for defining in conjunction with a base a fluid reservoir and for expelling fluids from the reservoir. The device includes novel reservoir filling syringe and filling adapter for conveniently filling the fluid reservoir of the device. Additionally, the device includes a unique crushable or collapsible needle cover which surrounds and protects the infusion cannula until time of use and then readily deforms as the device is connected to the patient so as to permit the needle to cleanly penetrate the patient's skin. The needle cover maintains the cannula in a substantially aseptic condition and enables self-administration by patients, such as young patients or needle adverse patients, which does not require their consciously inserting a needle into the skin.

An apparatus and methods for delivering ocular implants or microimplants. The apparatus is ergonomically designed for ease of use, and a simple manual depression of an actuator produces proportional movement of a linkage causing the implant or microimplant to be ejected through a cannula disposed at the desired location in the eye. Small gauge cannulas are provided for self-sealing methods of delivery.

An apparatus and methods for delivering ocular implants or microimplants. The apparatus is ergonomically designed for ease of use, and a simple manual depression of an actuator produces proportional movement of a linkage causing the implant or microimplant to be ejected through a cannula disposed at the desired location in the eye. Small gauge cannulas are provided for self-sealing methods of delivery.

A transducer seal designed to seal an open aperture of a transducer housing for a therapeutic ultrasound procedure. The seal has a membrane, a retainer and a mating device for locking in place with the transducer housing. The membrane is essentially transparent to ultrasound energy while being stretched taut about the retainer. The transducer seal may be made in a disposable or re-usable form.

A single use lancet assembly having a housing, with an open interior and a piercing aperture defined therein, a lancet, with a body and a piercing tip positioned in the open interior of the housing and movable between a cocked orientation and a piercing orientation, a driving assembly structured to move the lancet into the piercing orientation, and a single use trigger assembly structured to actuate an actuating mechanism thereby allowing the lancet to move, at least temporarily, from its cocked orientation to its piercing orientation. The single use trigger assembly is structured such that it may not be positioned to actuate the actuating mechanism more than one time, thereby preventing inadvertent or intentional re-use of a contaminated piercing tip.

A device having a housing; a cannula projecting forwardly from the housing; a connector useful for attaching the device to a fluid source or receptacle; a fluid flow path establishing fluid communication between the cannula and the connector; a retraction mechanism biasing the cannula away from its projecting position; and an actuator supported by the housing and configured to modify the fluid flow path so as to terminate fluid flow through the device, seal off the fluid flow path, and release the retraction mechanism to retract the cannula into the housing. The subject device is particularly preferred for use in the medical field, for example, as part of an infusion set or as a collection device for blood, or other fluids or flowable matter.

A needle tip assembly includes a needle tip, a needle tip cover structured and arranged to facilitate installation of the needle tip onto at least one of a pen needle, a pre-loaded syringe, and an injection device, and at least one of an arrangement for preventing re-installation or re-use of the needle tip, a safety mechanism coupled to the needle tip via a living hinge, and a safety cover non-removably coupled to the needle tip. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

A single use lancet assembly having a housing, with an open interior and a piercing aperture defined therein, a lancet, with a body and a piercing tip positioned in the open interior of the housing and movable between a cocked orientation and a piercing orientation, a driving assembly structured to move the lancet into the piercing orientation, and a single use trigger assembly structured to actuate an actuating mechanism thereby allowing the lancet to move, at least temporarily, from its cocked orientation to its piercing orientation. The single use trigger assembly is structured such that it may not be positioned to actuate the actuating mechanism more than one time, thereby preventing inadvertent or intentional re-use of a contaminated piercing tip.

A retractable safety syringe may have a ferrule and needle which are selectively removeable from a distal end of a syringe body. In particular, the ferrule may have an annular flange. A wedge element may be frictionally engaged to the ferrule and a distal end of the syringe body. To retract the needle into the syringe body, a punch of a piston displaces the wedge element off of an annular flange of the ferrule. At about the same time, longitudinally offset tabs engage an annular flange and retract the needle into the syringe body via a retraction force created by a variable vacuum compartment or tension member. Alternatively, the ferrule and needle may be temporarily fixed to the distal end of the syringe body via a detent and / or o-ring which engages a lower undercut groove and an upper undercut groove of the ferrule. An annular ring of the piston may have longitudinal offset tabs which engage an annular ring of the ferrule. Upon engagement, the retraction force of the variable vacuum compartment is sufficient to overcome any retaining forces created by the detent and / or the o-ring. Thereby, the needle and ferrule may be retracted into the syringe body. The longitudinal offset tabs may cant the needle when the needle is retracted into the syringe body.

A guard for a syringe that includes a needle, a needle protector cap, and a barrel with an outer diameter smaller than the needle protector cap. The guard includes a body having a cavity for receiving the syringe therein, and a shield that is slidable between an unguarded position wherein the needle is exposed and a guarded position covering the needle. One or more tabs in a wall of the body are deflectable from a first position wherein the tabs extend along the wall or radially outwardly from the wall, to a second position wherein the tabs are directed inwardly into the cavity for contacting the barrel of the syringe. In other embodiments, a collar or other radial element may be provided on the barrel of the syringe to provide lateral support within the cavity of the body.

A needle tip assembly includes a needle tip, a needle tip cover structured and arranged to facilitate installation of the needle tip onto at least one of a pen needle, a pre-loaded syringe, and an injection device, and at least one of an arrangement for preventing re-installation or re-use of the needle tip, a safety mechanism coupled to the needle tip via a living hinge, and a safety cover non-removably coupled to the needle tip. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

A safety intravenous cannula and catheter device is disclosed. The device permits easy insertion of a cannula made of a biocompatible material into the vein with a guide needle and withdrawal of the guide needle into a safety chamber with an in- built locking mechanism with completely prevents removal and / reuse of the needle. The needle before insertion is protected by a biocompatible sheath which when inserted into the vein and after withdrawal of the needle acts as catheter. Similarly, after withdrawal the needle is locked inside a safety chamber in such a manner that at no time does the user come into contact with the needle or in any danger of accidental injury.

Disclosed are medical probe devices and methods for use guiding of percutaneous probes during medical procedures. The probe devices include an ultrasound transducer housing having a passage therethrough configured to accommodate a probe. The devices can be utilized to guide a probe through the probe guide to a percutaneous target with real time visualization of the probe during the procedure. In addition, the devices can include a sterilizable shield including a sterile probe guide such that the transducer housing itself can be separated from a subject by a sterile barrier. The sterilizable shield can be a single-use shield that can prevent contamination and re-use of the shield. The devices can define a beneficial geometry conducive to use by a single operator that can be utilized for percutaneous targets near the skin surface and can enable excellent contact between the device and the skin surface of a subject.

The present invention provides a method for managing requests for service over a communications network. The method of the invention comprises the steps of: receiving a request for service from a customer terminal at a queue server via the communications network; allocating a queue identifier to the request for service; sending the queue identifier to the customer terminal; receiving the queue identifier from the customer terminal at the queue server as part of a subsequent request for service; performing a comparison between the queue identifier and queue status information; and forwarding the request for service to the service host in accordance with the result of the comparison. Preferably, if sufficient resources are available, the request for service is forwarded directly to the service host without entering a queue. If there are insufficient resources, the request for service is held in an automatically managed queue and the risk of catastrophic failure is eliminated.

The invention discloses a method and device for transmitting uplink control information in a wireless communication system. The method includes the steps that the number of channel state information reports needing transmitting in the same subframe is determined; automatic retransmission requests are mixed to determine or deny the number of HARQ-ACKs or NACKs; whether dispatch requests need to be transmitted in the same subframe or not is determined; a corresponding physical uplink control channel format is selected to transmit the CSI reports and / or the HARQ-ACKs or NACKs and / or the dispatch requests in the same subframe according to the determined result so that reusing of multiple pieces of PUCCH format information on the same antenna port is avoided. According to the method and device for transmitting the uplink control information in the wireless communication system, good PAPE performance is achieved, the throughput is not reduced systematically, and limited resources are effectively utilized.

An annular metal-to-metal sealing system, for use in wellhead systems and having many other uses, has a metal member defining an annular internal or external sealing surface for which sealing is intended. An annular seal body composed of high strength metal material is positioned in concentric relation with the annular sealing surface and is sufficient flexible to become spring loaded, typically during assembly, for continuous application of a spring force. The annular seal body defines one or more annular seal retainer grooves each having an annular soft metal sealing insert therein, with a portion thereof exposed for sealing engagement with the annular sealing surface. The spring loaded characteristic of the annular seal body applies constant force to maintain the soft metal seal insert in constantly energized sealing relation with the annular sealing surface and maintains effective sealing even when dimensional changes to the sealing surface occur due to temperature or pressure changes.

A biological sample collection unit for a centrifugal analyzer disk is disclosed. This unit consists of a flat cassette and an applicator that holds and controls the cassette during sample collection and during placement of the cassette into the analyzer disk.

Incorporating into an electrosurgical handpiece a device configured to disable the handpiece when a built-in usage time period expires. Preferably, the device comprises a timer in the form of an activating battery with a known discharge rate such that the battery voltage gradually reduces in value with use. The battery in turn is coupled to a circuit which monitors the battery voltage and operates a switch which decouples the handpiece electrode from the electrosurgical current source when the battery voltage falls below a preset value. This effectively disables the handpiece preventing reuse.

A method of encrypting a message for message integrity is provided. In the method, a random number is generated, a first ciphertext is generated by encrypting the message by using the generated random number, a hash value of the first ciphertext is calculated, an encryption key is generated by using the hash value of the first ciphertext and a shared key, a second ciphertext is generated by encrypting the random number by using the encryption key, and the first and second ciphertexts are combined.

The present invention comprises a single use fluid reservoir for use with a disposable medical device. The single use fluid reservoir has a reservoir body that includes a fluid holding tank. The fluid holding tank includes at least one inlet to admit fluid and at least one outlet to dispense fluid. The fluid reservoir body also has a structure for fixedly connecting the reservoir to the disposable medical device. In some embodiments, the fluid reservoir body has a snap-together structure that is capable of permanently connecting the fluid reservoir to a proximal connector of an endoscope. The fluid reservoir may include a mechanism for alerting an operator to the amount of liquid in the reservoir.

The invention provides a safety syringe, which has a cylinder (11), a syringe needle (21), a needle holder (31) associated to the cylinder and adapted to hold the syringe needle, and a plunger (41) associated to the cylinder (11), wherein the plunger (41) comprises a piston (42) and serves to inject a filling of the cylinder (11) via the syringe needle (21), and wherein the plunger (41) can be coupled with the needle holder (31) arranged in the region of a front hole (12) of the cylinder (11), to retract the needle holder (31) together with syringe needle (21) into the cylinder (11) by pulling the plunger (41) once coupled to the needle holder (31) is retracted into the cylinder by rotating the plunger (41) and pulling the plunger (41) aft thereby pulling the needle holder (31) into the cylinder (11). Then the aft end of the plunger (41) is broken off, and a removable cap (49) from the aft end of the plunger (41) may be placed over the opening in the forward end of the cylinder (11).

An embodiment of the present invention discloses an on-line payment method and system. The scheme provided by the embodiment of the invention comprises the steps of: when receiving an electronic payment request, preventing service parameters from being reused and initiating a phishing attack through various specific anti-phishing verifications, for example, increasing the timeliness of the service parameters by timestamps of anti-phishing parameters; verifying the request source, i.e., determining whether the request source for this request is one in a white list or not through the request source white list, thereby completely eradicating the possibility of being embezzled by a phishing website from the request source; and determining whether a creater of an external business and a payer of an internal business are the same user by comparing an IP address of an external call with an IP address obtained by the local, so as to prevent someone paying for a business created by the phishing website itself. These verification methods monitor the business parameters from various aspects and realize protection and control of the behavior of anti-phishing.