A medical syringe useful for administering an injection or withdrawing a bodily fluid, the syringe comprising a barrel, plunger assembly and a needle assembly having a selectively retractable needle, the plunger assembly further comprising a plunger handle with a plunger seal and a front tip extending forwardly of the plunger seal to extend through the barrel and into the an annular fluid seal disposed in a recess between the barrel and a forwardly projecting needle, thereby reducing dead space inside the syringe and helping anchor the annular fluid seal inside the recess.

A catheter insertion device includes a housing, a needle, a guide wire, and a catheter disposed coaxially over the needle. The needle has a proximal end in the housing and a distal end extending from a distal end of the housing in an insertion position. The guide wire has a distal portion disposed in a lumen of the needle in a withdrawn position. The guide wire may include a safety tip having a non-coiled configuration in the withdrawn position and a coiled configuration in an advanced position. The catheter insertion device may include a sliding member attached to the guide wire, wherein movement of the sliding member translates the guide wire from the withdrawn position to the advanced position.

A system for injecting includes a syringe body defining a proximal opening and a distal needle interface. The system also includes a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the syringe body. The plunger member includes a needle retention feature disposed in the plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The system further includes a needle hub assembly coupled to the distal needle interface of the syringe body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is retractable into plunger interior upon manipulation of the plunger member to actuate the energy-storage member latching member.

A catheter system may include a catheter assembly and a needle assembly. The catheter assembly may include a catheter hub and a catheter extending distally from the distal end of the catheter hub. The catheter assembly may include a cover coupled to a proximal portion of the catheter hub. The cover may be configured to reduce contact with the catheter assembly during initial insertion of the catheter assembly into vasculature of a patient and/or threading the catheter, which may reduce a risk of bacterial contamination of the catheter. The needle assembly may include an introducer needle, a housing, and a needle hub disposed within the housing. The housing may include a button. A proximal end of the introducer needle may be secured within the needle hub. In response to activation of the button, the needle hub and the introducer needle may move proximally within the housing.

A medical injection device for supporting a medical container comprising a barrel and a needle tip extending from a distal end of the barrel, comprising: safety shield, first ring configured to be coupled to the medical container and configured to be biased in a proximal direction relative to the safety shield from an injection position in which a needle tip extends out of the safety shield to a safety position in which the needle tip is covered by the safety shield, and second ring rotatably movable relative to the first ring between locking position wherein the second ring maintains the first ring in the injection position and an unlocking position wherein the second ring releases the first ring thereby allowing the first ring to be urged into the safety position.

Provided is an insertion mechanism with increased reliability and reduced components. The insertion mechanism uses a single engagement and release clip compressed within a housing of the insertion mechanism to engage a needle hub and catheter hub. A button is provided to move the catheter hub and needle hub in a distal direction until the engagement and release clip reaches a firing window in the mechanism housing. The engagement and release clip expands in the release window to release the needle hub from the catheter hub, permitting a return spring to move the insertion needle proximally while leaving the catheter inserted, and also retains the catheter hub in the deployed position.

A tubular rotator for a medicament delivery device is presented having a tubular body extending along a longitudinal axis and having a proximal end and a distal end. Mechanical members are arranged on the outer and inner surface of the tubular body and are configured to co-operate with corresponding mechanical members arranged on other parts of the medicament delivery device. A tubular resilient structure is integrally or fixedly arranged to the proximal end of the body that has a proximal contact surface configured to abut against a distal end surface of a medicament container arranged in the medicament delivery device.

A catheter assembly includes a flexible catheter (22), a needle (12) having a sharp distal tip, the needle (12) disposed in the flexible catheter (22) and moving from a first position that exposes the needle (12) to a second position, an outer member (26) that is configured to engage and disengage a catheter hub (14), an inner member (28) disposed in the outer member (26), and a needle protection (30) member disposed in the inner member (28), the needle protection member (30) enclosing at least a portion of the needle (12) when the needle (12) is in the second position.

The single-use safety syringe having a manual and/or automatic retracting needle preventing re-use thereof comprises a needle, a piston with a tightening seal and a cylindrical body having, at an end thereof, a connector provided with a calibrated attaching hole for the needle and open, at another end thereof, for inserting the piston, comprising, internally of the cylindrical body, a separating seal of a first chamber comprised between the separating seal and the connector in which a first active ingredient is positioned and a second chamber comprised between the separating seal and the tightening seal in which a second active ingredient is positioned, the separating seal having a connecting channel between the first and second chamber, closed by a pressure limiting valve, first engaging means further being provided, activatable for engaging the separating seal to the needle and second engaging means activatable for engaging the separating seal to the piston.

A catheter assembly includes a flexible catheter (22), a needle (12) having a sharp distal tip, the needle (12) disposed in the flexible catheter (22) and moving from a first position that exposes the needle (12) to a second position, an outer member (26) that is configured to engage and disengage a catheter hub (14), an inner member (28) disposed in the outer member (26), and a needle protection (30) member disposed in the inner member (28), the needle protection member (30) enclosing at least a portion of the needle (12) when the needle (12) is in the second position.