A safety catheter insertion device configured to automatically retract a needle cannula following insertion of a catheter assembly and to inhibit release of the catheter assembly from the safety catheter insertion device until the needle cannula has been retracted for the purpose of inhibiting inadvertent needle sticks. The safety catheter insertion device including an advancement arm slidably coupled to a needle housing assembly and configured to shift between a first position in which a needle cannula traverses through a catheter hub coupling portion of the advancement arm to inhibit release of a catheter assembly, and a second position in which one or more tabs of the advancement arm interact with one or more retention arms of the needle housing assembly to enable a biasing mechanism to shift the needle assembly to a proximal position and enable release of the catheter assembly from the safety catheter insertion device.

A handheld cryoanesthesia or analgesia device for cooling a target area on cutaneous membranes, mucous membranes, and tissue of the mucocutaneous zone having an elongated body and a thermoelectric cooling system disposed within the elongated body. The thermoelectric cooling system is configured to physically contact and thermally couple the target area of the cutaneous membranes, mucous membranes, and tissue of the mucocutaneous zone to induce cryoanesthesia or analgesia. The thermoelectric cooling system includes a thermally-conductive cold tip, a thermally-conductive cooling power concentrator thermally coupled to the cold tip, at least one Peltier unit module thermally coupled to the cooling power concentrator, a heatsink thermally coupled to at least one Peltier unit module, a power source, at least one thermal sensor, and a controller operably outputting a control signal to the Peltier unit module to maintain a predetermined temperature.

A fluid delivery device includes an automatic needle retraction mechanism configured to automatically retract a delivery end of a needle into a housing. In one embodiment, the needle assembly is configured to automatically withdraw the delivery end of the needle into the housing upon an actuator moving from the first position to the second position. In one embodiment, the needle assembly is configured to automatically withdraw the delivery end of the needle into the housing upon decoupling a bottom surface of the housing from a skin surface.

An auto-injector includes a drive assembly within a housing carrying a syringe including a needle adjacent an activation cap within the housing's distal end. The drive assembly includes a first chamber carrying a gas canister, a plunger within a second chamber coupled to the syringe, and proximal and distal chambers. The activation cap is pressed against a subject's skin to direct the drive assembly proximally to open an outlet of the canister to release pressurized gas into the first chamber, whereupon the gas enters the proximal chamber to generate a distal force to advance the drive assembly to direct the needle into the subject and enters the second chamber to advance the plunger to deliver agents from the syringe into the subject. After the plunger advances, the gas enters the distal chamber to generate a proximal force to retract the drive assembly to direct the needle back into the housing.

The present disclosure relates to a medicament delivery device comprising a housing, a reservoir for medicament disposed in the housing and a dispensing member. The dispensing member is moveable relative to the housing from a first position to a second position to dispense medicament from the reservoir when the reservoir contains medicament. The medicament delivery device further comprises first and second biasing members. The first biasing member is configured to urge the dispensing member from the first position to an intermediate position. The second biasing member is configured to urge the dispensing member from the intermediate position to the second position.

A plunger, a needle assembly and a retractable syringe comprising same are provided. The plunger comprises a plunger member and a plunger outer having a lock spring that prevents or impedes movement of the plunger member after needle retraction. The plunger further comprises another locking member for engaging the barrel to prevent or impede further movement of the plunger outer after delivery of fluid contents. The plunger member has a plunger seal which engages a retractable needle of the needle assembly for retraction. The retractable needle comprises a cannula and needle body with a plurality of fluid channels that co-operate with a fluid conduit of the plunger seal to efficiently direct fluid to the cannula. A needle retainer comprises a plurality of barbed arms releasably coupled to the needle body, whereby an ejector with tabs facilitates release of the retractable needle from the needle retainer to allow compressed spring-driven retraction.

A cannula capture mechanism is described herein. The capture mechanism may include an inner housing, outer housing, and a cannula. The outer housing may be configured to move between a compressed and a decompressed state. An outer surface of the inner housing may include one or more interlock components. When the cannula is exposed from a distal end of the inner housing, the one or more interlock components may interact with one or more interlock surfaces formed in another surface of the catheter device. When the cannula is retracted proximally within the inner housing, the inner housing may contract radially inward causing the one or more interlock components to be separated from the one or more interlock surfaces and the outer housing to move to the decompressed state and extend distally over a distal portion of the inner housing.

An apparatus (110) includes an activation mechanism (20) and a safety latch (122). The activation mechanism is operative to deploy a needle (116) to protrude out of a housing (112), the needle (116) having a longitudinal axis. The safety latch (122) is movably mounted on the housing (112) and formed with a needle opening (129) to allow the needle (116) to pass therethrough. The safety latch (122) has a first position wherein the needle (116) is aligned to pass through the needle opening (129) and a second position wherein the safety latch (122) is moved with respect to the housing (112) such that the needle (116) is blocked from movement in a direction parallel to the longitudinal axis thereof by a portion of the safety latch (122) distanced from the needle opening (129).

A machine vision based automatic needle cannula inspection system and methods of use. The system comprises of an inspection and control unit, image capture devices (32, 33), light sources (34, 35, 36, 37), a unit that makes the needle cannula (28) and the image capture device(s) (32, 33) rotate relative to each other, and a rejected part removal unit. By means of rotating the needle cannula (28) and image capture devices (32, 33) relatively, a plurality of images captured along the circumferential direction of the needle cannula are directly saved to a computer, the images are then screened, processed and analyzed to fulfill the automatic inspection of multiple quality and technical parameters of the needle cannula without the need to position the bevel area of cannula tip to a specific direction. Inspection parameters and accuracy can be set at any time, the system can automatically record classification and statistics of passed and rejected needle cannulae for query, and the rejected cannulae are removed automatically at next position. All the functions are completed at one work station, and needle cannula tips on both sides can be inspected simultaneously, if needed. Thereby the inspection efficiency and reliability are greatly improved, resulting in extremely extensive application prospects and huge economic values.

In an example, a method for delivering an anesthetic agent to a target tissue in a nasal cavity of a patient includes inserting a cryotherapy device into the nasal cavity of the patient. The cryotherapy device includes a cryotherapy delivery feature and one or more protrusions. The method also includes positioning the cryotherapy delivery feature in contact with the target tissue, and delivering, using the cryotherapy delivery feature, a cryotherapy treatment to the target tissue. After inserting the cryotherapy device into the nasal cavity, the method includes actuating the one or more protrusions from a retracted state to an extended state. After actuating the one or more protrusions to the extended state, the method includes penetrating the target tissue with the one or more protrusions. After penetrating the target tissue, the method includes delivering, via the one or more protrusions, an anesthetic agent into the target tissue.