The present invention relates to an apparatus for providing specifically metered doses of at least two flowable dental materials in desired ratios to one another. In particular, the present invention allows for controlled metering and dispensing of two or more flowable dental substances which when s
The present invention relates to an apparatus for providing specifically metered doses of at least two flowable dental materials in desired ratios to one another. In particular, the present invention allows for controlled metering and dispensing of two or more flowable dental substances which when subsequently mixed form a dental bonding composition, dental adhesive, dental cement, or other dental restorative or preparative materials. Specifically, one embodiment of the present invention utilizes a multi-rack system as well as a drive spring action to provide a substantial mechanical advantage to the user such that a relatively long throw of the dispensing button creates a relatively short, metered distance of movement of the multiple racks and corresponding pistons in the each lumen of a cartridge containing the component of the desired dental composition, allowing for small, metered doses of each flowable dental component to be dispensed from the apparatus in the proper proportions.
대표청구항▼
What is claimed is: 1. An apparatus for dispensing dental compositions, the apparatus comprising: a) a body comprising a top shell portion, a bottom shell portion, and a chamber received therein; b) a replaceable cartridge having at least two lumens with at least two pistons, the cartridge operable
What is claimed is: 1. An apparatus for dispensing dental compositions, the apparatus comprising: a) a body comprising a top shell portion, a bottom shell portion, and a chamber received therein; b) a replaceable cartridge having at least two lumens with at least two pistons, the cartridge operable to dispense a component of a dental compound contained within the lumens, and wherein the cartridge is further operable to be at least partially inserted into the chamber; c) an inner mechanical system disposed in the body, the inner mechanical system comprising a rack system, said rack system having at least two racks operable to be urged forward to engage a piston in each lumen of the cartridge; d) a button system in contact with the body, the button system operable to be depressed in a direction substantially forward and in line with the rack system by a user such that the button system engages the inner mechanical system when depressed, such that the rack is advanced a predetermined distance such that a metered amount of the components of the dental compound is dispensed from the at least two lumens; and e) wherein the inner mechanical system further comprises a plurality of teeth disposed on the rack system, and a drive spring and a pawl spring disposed on the body, the drive spring and the pawl spring being operable to interface with at least one of a plurality of teeth on the rack system and at least one surface of the button system such that depression of the button system by a user initiates drive spring to advance the rack system a predetermined distance proportional to the distance between a first selected tooth located on the rack and a second selected tooth located on the rack and initiates the pawl spring to disengage from a third selected tooth on the rack and engage a fourth selected tooth on the rack located at a distance substantially equal to the distance between the first tooth and the second tooth, and release of the button causes the drive spring to disengage from said first selected tooth and engage the second selected tooth on the rack. 2. The apparatus of claim 1, wherein a cross section area of a first lumen of the at least two lumens when compared to a cross section area of a second lumen of the at least two lumens is proportionally sized to equal the desired volumetric ratio of a first component of the dental compound in a first lumen to the volumetric ratio of a second component of the dental compound in a second lumen. 3. The apparatus of claim 2, wherein the ratio of the cross section area of the first lumen of the at least two lumens is approximately 1 to 4 times the cross section area of the second lumen of the at least two lumens. 4. The apparatus of claim 2, wherein the ratio of cross section area of the first lumen of the at least two lumens to the cross section area of the second lumen of the at least two lumens is approximately 1:1. 5. The apparatus of claim 2, wherein the ratio of cross section area of the first lumen of the at least two lumens to the cross section area of the second lumen of the at least two lumens is approximately 2:1. 6. The apparatus of claim 2, wherein the ratio of cross section area of the first lumen of the at least two lumens to the cross section area of the second lumen of the at least two lumens is approximately 3:1. 7. The apparatus of claim 2, wherein the ratio of cross section area of the first lumen of the at least two lumens to the cross section area of the second lumen of the at least two lumens is approximately 4:1. 8. The apparatus of claim 2, wherein the metered amount of the dental compound is between about 0.04 ml and about 0.20 ml for each depression of the button system. 9. The apparatus of claim 1, wherein the rack system comprises at least two racks positioned in parallel with one another and a plurality of teeth disposed on each rack, and the inner mechanical system comprises a drive spring operable to engage teeth on each rack and the button system, the racks each containing a plurality of teeth on each rack corresponding with one another and operable to be engaged and moved a predetermined distance by the drive spring when the button system is depressed by a user. 10. The apparatus of claim 1, wherein the replaceable cartridge further comprises a chamber engaging portion operable to fit within a retaining slot located within the body chamber when the cartridge is seated into the body chamber. 11. The apparatus of claim 10, further comprising a cartridge ejector system attached to the body, operable to disengage the cartridge from the body chamber when the ejector system is engaged. 12. The apparatus of claim 1, further comprising an anti-hysteresis system in engagement with the rack system, the anti-hysteresis system operable to prevent the rack system from moving backward unless the anti-hysteresis system is disengaged. 13. An apparatus for dispensing dental compositions, the apparatus comprising: a) a body comprising a top shell portion, a bottom shell portion, and a chamber received therein; b) a cartridge operably attached to the body, the cartridge having at least two lumens with at least two pistons, the cartridge operable to dispense a component of a dental compound contained within the lumens; c) an inner mechanical system disposed in the body, the inner mechanical system comprising a rack system, said rack system having at least two racks operable to be urged forward to engage a piston in each lumen of the cartridge, the inner mechanical system further comprising a drive spring and a pawl spring operable to interface with at least one of a plurality of teeth on the rack system; d) a button system in contact with the body and in proximity to the drive spring, the button system operable to be depressed by a user in a substantially forward direction such that at least one surface of the button system engages the drive spring when a user depresses the button system such that depression of the button initiates the drive spring to advance the rack system a predetermined distance proportional to the distance between a first selected tooth located on the rack and a second selected tooth located on the rack, initiating the pawl spring to disengage from a third selected tooth on the rack and to engage a fourth selected tooth on the rack located at a distance substantially equal to the distance between the first tooth and the second tooth, and whereby release of the button system by the user causes the drive spring to disengage from said first tooth and engage the second tooth on the rack, causing the rack to advance a predetermined distance such that a metered amount of the components of the dental compound is dispensed from both lumens. 14. The system of claim 13, wherein the cartridge comprises a translucent material operable to preclude radiation of a selected range of wavelengths from reaching the dental composition contained in one or both lumens of the cartridge. 15. The system of claim 13, further comprising an ejector system in contact with the body, and adjacent to the cartridge, the ejector system operable to disengage the cartridge from the dispensing apparatus when an ejector button is activated. 16. The system of claim 15, wherein the proportion of each component of the dental composition is determined by the cross section area of the lumen containing the component. 17. The system of claim 15, wherein the inner mechanical system further comprises a pawl spring in contact with at least one of the teeth on each rack, the pawl spring operable to prevent the rack system from moving in a direction opposite of the pistons when the pawl spring is engaged. 18. The system of claim 15, wherein the ejector is further operable to disengage the drive spring and the pawl spring when the ejector button is activated. 19. The system of claim 18, wherein the dental composition comprises a first and second component. 20. The system of claim 19, wherein the ratio of the cross section area of the first lumen is approximately 1 to 4 times the cross section area of the second lumen. 21. The system of claim 19, wherein the ratio of cross section area of the first lumen to the cross section area of the second lumen is approximately 1:1. 22. The system of claim 19, wherein the ratio of cross section area of the first lumen to the cross section area of the second lumen is approximately 2:1. 23. The system of claim 19, wherein the ratio of cross section area of the first lumen to the cross section area of the second lumen is approximately 3:1. 24. The system of claim 19, wherein the ratio of cross section area of the first lumen to the cross section area of the second lumen is approximately 4:1.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Sams Bernard (London GB2), Cartridge-holder assembly for medication dispensing unit.
Broyles Bruce R. ; Wilson James A. ; Radewald Vern E. ; Biesecker James C., Lockable, hand-held dispenser and mixing tray for dispensing small quantities of material.
Blatherwick William J. (Hamilton Square NJ) Hamilton Leslie (Trenton NJ) Holewinski Robert D. (Lakehurst NJ) Shen Virginia A. (East Brunswick NJ) Kapec Jeffrey (Westport CT) Tanaka Kazuna (Cos Cob CT, Ratchet type dispenser for dental materials.
Leak, David Martin; Boyd, Malcolm Stanley; Plumptre, David Aubrey; De Sausmarez Lintell, Daniel Thomas; Marshall, Elizabeth Anne; Smith, Christopher; Ortiz, Elliot Lucas, Delivery of two or more medicaments through a single dose selection and single dispense interface.
Tapocik, Bryan, Electrical pen with improvements for pen removably retaining single use cartridge containing tooth whitening compounds, dental bonding compounds, nail polish, and adhesives and removably retaining disposable tooth whitening applicators, disposable dental bonding compound applicators, nail polish applicators and disposable adhesive applicators.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.