An apparatus for removably retaining a single use cartridge and dispensing at least one compound from the single use cartridge. The apparatus includes a dispensing pen having a housing which includes a source of electricity, an electric motor, a gear assembly and a moving shaft with a multiplicity of teeth to cause an advancing shaft to move forwardly toward the front of the pen and interact with a piston to push a plunger at the rear of the cartridge so that it will dispense compounds from the cartridge. The cartridge can be a single chamber cartridge or a dual chamber cartridge or a dual chamber cartridge separated by a dividing wall. There can be any numerous compounds including teeth whitening compounds, nail polish, cosmetics, etc.

The present invention relates to a caulking gun for dispensing viscous material comprising a stock a cartridge keep a push rod longitudinally moveably mounted in the stock provided at its one end with a plunger which engages the piston of a cartridge placed in the cartridge keep, means for engaging the push rod to advance it, brake means hinged to the stock and provided with a clearance hole for engaging the push rod such that the push rod is moveable in a direction advancing the push rod towards the cartridge and is held in a direction retreating the push rod from the cartridge, which brake means are arranged to travel to a first position relative to the stock as the push rod advances and to a second position as the push rod retreats thereby defining the retreat of the push rod, the brake means being inclined relative to the axis of the push rod and adjusting means for varying the retreat of the push rod.

In order to provide an adjustable caulking gun with at least two different levels of retreat of the push rod giving the user easily a visual feedback of the chosen retreat of the push rod, it is proposed according to the present invention that the adjusting means are configured as a rotatable wheel with a slope, the rotatable wheel being positioned on the axis of the push rod between the stock and the brake means, the distance between the highest point of the slope and the brake means defining the retreat of the push rod.

This rotatable wheel allows the user to select the level of retreat of the push rod by turning the wheel between a first position with no retreat of the push rod and a second position with a maximum retreat of the push rod resulting in a anti-drip behaviour of the caulking gun.

This invention relates to a discharge device of the dispenser gun type, which is suitable in particular for discharging semi-solid materials such as e.g. bone replacement materials. The discharge device comprises an adapter (400) which is removably attached to a main body (110) of the discharge device. A fastening structure for attachment of a container (300) is formed on the adapter substantially along a proximal direction (C) contrary to the feed direction (A). As a result various types of containers can be fastened to the machine without the need to change the mechanism of the device. The container can be provided on both ends with identical external threads and can be closed by closure caps in order to enable intuitive handling. In order to improve access to points which are difficult to reach, the container may be in the form of a curved pipe or may be formed flexibly. The piston rod (200) of the discharge device is then also formed flexibly.

Formulation delivery systems, formulation delivery devices, and formulation cartridges for the same are provided. Formulation delivery systems include a reusable handle, a formulation dispensing assembly, and a controller. The formulation dispensing assembly includes a reciprocating nozzle assembly and a pump. The reciprocating nozzle assembly is fluidically coupleable to the formulation cartridge or the cleaning cartridge received within the reusable handle. Formulation delivery devices include a reusable handle configured to receive a formulation cartridge therein, and a formulation dispensing assembly disposed in the reusable handle. The formulation dispensing assembly includes fluid conduits, a pump fluidically connected to the fluid conduits, a reciprocating nozzle assembly, and a controller. Formulation cartridges include a reusable cartridge body, a valve frame, and a disposable refill packet reversibly-coupleable to the reusable cartridge body. The disposable refill packet includes a formulation packet and a body portion configured for insertion into the reusable cartridge body.

A cartridge fitting portion of a cylindrical syringe made of a resin includes an end surface opening portion, a continuous opening portion continuous with the end surface opening portion, opened in a radial direction, and extending in an extending direction, and a recess portion configured to communicate with the end surface opening portion, the continuous opening portion, and an internal passage in a cylindrical body. The recess portion includes a flange fitting recess to be fitted with a flange portion of a cartridge, and a cylindrical portion fitting recess that communicates with the flange fitting recess and is fitted with a part of the cylindrical portion. A wall portion surrounding the cylindrical portion fitting recess of the cartridge fitting portion is configured to warp into snap engagement with the part of the cylindrical portion when the part of the cylindrical portion is inserted from the continuous opening portion.

An applicator that is less expensive than those according to the related art and in which a plunger does not easily slip out of a cylindrical syringe. A cylindrical syringe and a plunger are each molded from a resin material. A resistance structure is provided between the inner peripheral surface of the cylindrical syringe and the outer peripheral surface of a pressing portion of the plunger. The resistance structure is configured to act as resistance to movement of the pressing portion when the pressing portion is moved toward a cartridge fitting portion beyond a predetermined position and to movement of the pressing portion when the pressing portion is moved from the side of the cartridge fitting portion toward an end of the cylindrical syringe opposite to the cartridge fitting portion beyond the predetermined position.

A product dispensing device includes a body having a first end and a second end; a product holding mechanism at the first end; a plunger defining a rack, supported by and extending through the product holding mechanism and the body from the first end to the second end; a drive mechanism, pivotally coupled to the body, including a trigger, a trigger return spring, and a pawl connected to the trigger via a pawl bias spring for bringing the pawl into contact with the plunger, the pawl having pawl teeth shaped to complement the rack; and a locking mechanism configured to limit a movement of the plunger in a rearwards direction while the locking mechanism is in a locked configuration.

A plunger for engaging a plug of a cartridge used with a dispenser. The plunger broadly comprises a first section, a second section, and an intermediate section. The first section includes a first side surface and has a first diameter. The second section is forward of the first section so that the second section engages the plug ahead of the first section. The second section includes a second side surface and has a second diameter smaller than the first diameter. The intermediate section is between the first section and the second section and has a third side surface tapering from the first side surface to the second side surface so that the intermediate section urges an annular wall of the plug radially outward against the cartridge thereby forming a seal between the annular wall and the cartridge when the plunger is urged longitudinally toward the plug.

A dispenser assembly including a syringe portion and a capsule portion interfacing with the syringe portion. The syringe portion includes a syringe containing a first material, the syringe includes a proximal open end and a distal open end defining a lumen, and a plunger disposed within the lumen at the proximal open end, the plunger configured to slidably move within the lumen and push the first material towards the distal open end. The capsule portion includes a capsule containing a second material, a capsule stopper disposed within the capsule, and an extruder configured to engage with the capsule and extrude the second material out of the capsule, wherein a rotation force of the extruder causes the capsule stopper to slidably move and pushes the second material towards the syringe portion for mixing the first material and second material together within the syringe.

A cartridge includes a head part including an aperture leading from an outer side of the head part to a cartridge chamber and a connector sealingly insertable into and removable from the aperture, the connector having a film extending over a surface of the connector with the surface facing the cartridge chamber.