Powder jet device for dispensing dental material
First Claim
1. A powder jet device for dispensing a dental material, comprising:
- a nozzle head for receiving a discharge nozzle, wherein the nozzle head comprises a rotatable knob adapted to rotate a valve member,a housing comprising;
a valve portion removably connected to the nozzle head and adapted to receive the valve member, wherein the valve portion extends along a first longitudinal axis, anda chamber portion comprising a magazine that extends at an angle with respect to the first longitudinal axis of the valve portion, the chamber portion comprising at least a first chamber for storing a powder material, wherein the chamber portion comprises a proximal end located adjacent the valve portion, a distal end located farther away from the valve portion, and a fluid channel extending generally parallel within the chamber portion and opening adjacent the distal end into the first chamber, anda valve member movably disposed within the valve portion, wherein the valve member forms a rotary valve with the valve portion of the housing and comprises a fluid supply passage and a first and a second fluid path branching off from the fluid supply passage, wherein the valve member is movable between a first position, in which the first fluid path for delivery of a fluid from the fluid supply passage into the first chamber via the fluid channel so as to create a dispersion from the fluid and the powder material and the second fluid path for delivery of the dispersion toward the discharge nozzle are open, and a second position, in which at least the first fluid path is closed.
2 Assignments
0 Petitions
Accused Products
Abstract
A powder jet device (10) for dispensing a dental material comprises a nozzle head (12) comprising a discharge nozzle. The powder jet device (10) further comprises a housing (14) comprising a valve portion (28), which is connected to the nozzle head (12) and is adapted to receive a valve member (16), and a chamber portion (30) comprising at least a first chamber (32) for storing a powder material. The chamber portion (30) comprises a proximal end (34) located adjacent the valve portion (28), a distal end (36) located away from the valve portion (28) and a fluid channel (38) extending from the distal end (36) substantially to the proximal end (34) into the chamber. The powder jet device (10) further comprises a valve member (16) disposed within the valve portion (28). The valve member (16) comprises a fluid supply passage (54) and is movable between a first position, in which a first fluid path (64) for delivery of a fluid from the fluid supply passage (54) into the chamber via the fluid channel (38) so as to create a dispersion from the powder material and a second fluid path (66) for delivery of the dispersion to the discharge nozzle are open, and a second position, in which at least the first fluid path (64) is closed.
41 Citations
13 Claims
-
1. A powder jet device for dispensing a dental material, comprising:
-
a nozzle head for receiving a discharge nozzle, wherein the nozzle head comprises a rotatable knob adapted to rotate a valve member, a housing comprising; a valve portion removably connected to the nozzle head and adapted to receive the valve member, wherein the valve portion extends along a first longitudinal axis, and a chamber portion comprising a magazine that extends at an angle with respect to the first longitudinal axis of the valve portion, the chamber portion comprising at least a first chamber for storing a powder material, wherein the chamber portion comprises a proximal end located adjacent the valve portion, a distal end located farther away from the valve portion, and a fluid channel extending generally parallel within the chamber portion and opening adjacent the distal end into the first chamber, and a valve member movably disposed within the valve portion, wherein the valve member forms a rotary valve with the valve portion of the housing and comprises a fluid supply passage and a first and a second fluid path branching off from the fluid supply passage, wherein the valve member is movable between a first position, in which the first fluid path for delivery of a fluid from the fluid supply passage into the first chamber via the fluid channel so as to create a dispersion from the fluid and the powder material and the second fluid path for delivery of the dispersion toward the discharge nozzle are open, and a second position, in which at least the first fluid path is closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification