US3199740A - Ejection device - Google Patents

Ejection device Download PDF

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Publication number
US3199740A
US3199740A US300428A US30042863A US3199740A US 3199740 A US3199740 A US 3199740A US 300428 A US300428 A US 300428A US 30042863 A US30042863 A US 30042863A US 3199740 A US3199740 A US 3199740A
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United States
Prior art keywords
cylinder
ejection
piston
heating
ejection cylinder
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Expired - Lifetime
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US300428A
Inventor
Juffa Richard
Kruger Helmut
Michnelis Rudolf
Rehberg Hans-Joachim
Schmahl Josef
Schulz Hans-Hermann
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Bayer AG
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Bayer AG
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Priority to US300428A priority Critical patent/US3199740A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00593—Hand tools of the syringe type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62—Applicators, e.g. syringes or guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00516—Shape or geometry of the outlet orifice or the outlet element

Definitions

  • the invention relates to an ejection device for ejecting and applying extremely small quantities of compositions which are liquefied or softened by heat action, e.g. thermoplastic plastics, comprising an ejection cylinder which can be heated electrically and in which is displaceably arranged a piston fixed to the end of a push rod.
  • the ejection cylinder or a part thereof is heated according to the invention by direct passage of electric current.
  • the ejection cylinder according to the invention has a wall thickness which increases or decreases steadily or suddenly in the direction of ejection.
  • the result hereby obtained is that the heating and cool ing times of the cylinder are very short and thus the material being processed is protected.
  • the inconvenience to the patient is slight, due to the fact that it is possible to dispense with an additional cooling.
  • the direct heatting of the cylinder admits the use of the lowest possible voltages, e.g. 2 volts, so that any danger to the patient or dentist is excluded.
  • the instrument can be made with extremely small dimensions such as have not so far been possible, e.g. with cylinder and nozzle diameter below mm. and even down to 1-2 mm, since heating coils, induction coils and cooling systems are omitted.
  • the composition to be sprayed is supplied as a granulated material or in the form of a small rod to the cylinder.
  • the advancing movement of the piston can be effected manually or also pneumatically.
  • the ejection cylinder is enclosed by a pneumatic pressure cylinder, which is provided on the inlet side of the pressure medium with a closable opening or a resilient branch tube.
  • FIGURE 1 is a diagrammatic longitudinal section through one embodiment of the complete device.
  • FIGURE 2 is a diagrammatic longitudinal section showing the head of a second embodiment of the device.
  • a piston 2 slides towards the left against the force of the spring 3 and carries with it a small ejection piston 5 connected to the piston 2 by the piston rod 4.
  • the spring 3 which is supported on an insulating guide member 6 and the circlip 7, forces the piston back to its starting position, which is determined by engagement of the insulating cap 8 with the cylinder end.
  • an increase in pressure is produced from the compressed air entering the nozzle 9 by blocking the end of a spring tube it), which forms the air outlet, by pressing the tube opening onto an elastic disc 11.
  • the blocking of the outlet can be etfected by closing a suitably arranged opening 12 in a branch pipe 13 of the compressed air supply by means of a finger.
  • the compressed air contributes to the cooling of the device when the piston is not actuated.
  • a protective gas atmosphere can be formed in addition to the dissipation of heat.
  • the small ejection piston can be advanced to beyond the opening of the ejection cylinder 13 surrounding it.
  • a sleeve 15 is inserted in the pressure cylinder 1 so that it can be easily released by a bayonet connection 14, which sleeve co-axially retains the ejection cylinder 18 (made of corrosion-resistant metal of high specific electrical resistivity) by means of a heat-insulating intermediate member 16 and brazed webs 17 which are of low heat conductivity because of their small cross-section.
  • the ejection cylinder 13 is connected by conductors l9 and 2.8 to a low voltage source and is thus heated.
  • the external diameter of the ejection cylinder decreases for example towards the ejection aperture (FIGURE 1); on the other hand, for improving the heat conduction, the external diameter can be generally increased outside the electrically heated region (e.g. at the projecting tip).
  • the orifice of the heated ejection cylinder can be constricted by screwing on a nozzle.
  • the sleeve 15', and also the pneumatic cylinder l, is coated with a fluorolefine lining 21 or 22 which is made suitable for gripping (e.g. by sand-blasting), the tube It? being embedded in said lining.
  • the lining 21 has an opening which is connected through bores to the atmosphere and is also cooled by the air stream discharging from the tube lit in the rest position.
  • One or both electrical conductors can be placed inside the compressed air tube adjoining the nozzle 9 for purposes of better handling.
  • the device operates as follows:
  • thermoplastic material or a few granules thereof are placed in the opening of the cylinder 18.
  • the heating is switched on and off or increased and reduced by a temperaturecontrolled switch or a time switch adjusted to values obtained by experience.
  • the device is gripped like a pencil and is positioned on the cavity which is to be filled, which is possibly preheated or is pretreated with a solvent or even with a release agent.
  • Finger pressure on the small tube to discharging cooling air in the rest position figure or closing of the opening 12 leads to the hot composition being ejected by means of the mechanism described; pressure can be maintained as long as desired by means of the piston, whereby a union with the foundation material and good filling of the cavity is guaranteed and any possible occurring shrinkage compensated for.
  • thermoplastic ma terial which comprises:
  • a tubular ejection cylinder for receiving material to be extruded therefrom, said cylinder being made of an electrically conductive material having a selected resistivity for heating said material in response to an electrical current passed through said cylinder, thereby converting said material from a solid to a plastic state;
  • the pneumatic actuating means for driving the piston includes a pneumatic actuating cylinder having a piston connected to the piston within the ejection cylinder and an external-- ly disposed air bleed orifice in the air supply line to said pneumatic cylinder whereby the ejection of material can be controllably varied by blocking said orifice.
  • the pneumatic actuating means for driving the piston includes a pneumatic actuating cylinder having a piston connected to the piston within the ejection cylinder, an air supply line connected to said actutaing cylinder, and a spring tube air discharge line, also connected to said actuating cylinder, said spring tube having an open end for the dis charge of air therefrom, said discharge end being disposed adjacent to a resilient closure disc ailixcd to the housing, whereby the ejection of material can be controllably varied by pressing said spring tube discharge end into abutting contact with said closure disc.
  • the ejection device of claim 1 wherein the ejection cylinder is disposed within an electrically conductive sleeve which is secured to the support housing, said cylinder being supported in spaced relation to said sleeve by means of an electrically conductive spacer and an electrically insulating spacer whereby said sleeve and conductive spacer form part of an electrically conductive path for passing an electric current through said ejection cylinder.

Description

Aug. 10, 1965 R. JUFFA EITAL 3,199,740
EJECTION DEVICE Filed Aug. 7, 1963 IN VENTORS I RICHARD JUFFA, HELMUT KRUGER, RUDOLF MICHAEL/5, HANS -JOACH/M REHBERG, JOSEF SU-/MAHL? HANS-HERMANN SCHULZ. t M
M ATTORNEYS United States Patent 3,19%,740 EJECTION DEVIQE Richard Julia and Helmut Kriiger, Levcrkusen, and Eli!- dolf Michaelis, Cologne-Berlitz, and Hans-Joachim Rehherg, Josef Schmahl, and Hans-Hermann Schulz, Leverkusen, Germany, assignars to Farhenfahrilren Bayer Alrtiengesellschaft, Leverkusen, Germany, a corporation of Germany Filed Aug. 7, 1963, Ser. No. 309,428 Claims. (Cl. 222-146) The invention relates to an ejection device for ejecting and applying extremely small quantities of compositions which are liquefied or softened by heat action, e.g. thermoplastic plastics, comprising an ejection cylinder which can be heated electrically and in which is displaceably arranged a piston fixed to the end of a push rod.
The heating of ejection cylinders has hitherto been effected by encircling them with electric heater strips or by induction. The expense of equipment combined therewith is uneconomical for extremely small ejection devices. Furthermore, the use of such heating methods is not desirable for such instruments for reasons of dimensions and weight. The high heat capacity necessary with strip heating necessitates long heating up and cooling times and consequently the use of separate cooling means.
It has now been found that these disadvantages are obviated if the ejection cylinder or a part thereof is heated according to the invention by direct passage of electric current. Depending on the requirements of the local heating intensity and the heat conduction, the ejection cylinder according to the invention has a wall thickness which increases or decreases steadily or suddenly in the direction of ejection.
The result hereby obtained is that the heating and cool ing times of the cylinder are very short and thus the material being processed is protected. When using the instrument as a dental ejector, the inconvenience to the patient is slight, due to the fact that it is possible to dispense with an additional cooling. The direct heatting of the cylinder admits the use of the lowest possible voltages, e.g. 2 volts, so that any danger to the patient or dentist is excluded. Moreover, the instrument can be made with extremely small dimensions such as have not so far been possible, e.g. with cylinder and nozzle diameter below mm. and even down to 1-2 mm, since heating coils, induction coils and cooling systems are omitted. The composition to be sprayed is supplied as a granulated material or in the form of a small rod to the cylinder.
The advancing movement of the piston can be effected manually or also pneumatically.
For the pneumatic advancing movement and for the subsequent firm pressing of the ejected compositions on to the application surface, the ejection cylinder is enclosed by a pneumatic pressure cylinder, which is provided on the inlet side of the pressure medium with a closable opening or a resilient branch tube.
In the accompanying drawings:
FIGURE 1 is a diagrammatic longitudinal section through one embodiment of the complete device, and
FIGURE 2 is a diagrammatic longitudinal section showing the head of a second embodiment of the device.
Referring to FIGURE 1, in a pressure cylinder ll, under the influence of compressed air supplied at 9, a piston 2 slides towards the left against the force of the spring 3 and carries with it a small ejection piston 5 connected to the piston 2 by the piston rod 4. When the pressure is relaxed, the spring 3, which is supported on an insulating guide member 6 and the circlip 7, forces the piston back to its starting position, which is determined by engagement of the insulating cap 8 with the cylinder end. In the arrangement illustrated, an increase in pressure is produced from the compressed air entering the nozzle 9 by blocking the end of a spring tube it), which forms the air outlet, by pressing the tube opening onto an elastic disc 11.
As shown in FIGURE 2, the blocking of the outlet can be etfected by closing a suitably arranged opening 12 in a branch pipe 13 of the compressed air supply by means of a finger.
The compressed air contributes to the cooling of the device when the piston is not actuated. By using an inert gas instead of the compressed air, a protective gas atmosphere can be formed in addition to the dissipation of heat. For injecting into deep cavities and also for better cleaning, the small ejection piston can be advanced to beyond the opening of the ejection cylinder 13 surrounding it.
A sleeve 15 is inserted in the pressure cylinder 1 so that it can be easily released by a bayonet connection 14, which sleeve co-axially retains the ejection cylinder 18 (made of corrosion-resistant metal of high specific electrical resistivity) by means of a heat-insulating intermediate member 16 and brazed webs 17 which are of low heat conductivity because of their small cross-section.
The ejection cylinder 13 is connected by conductors l9 and 2.8 to a low voltage source and is thus heated. By local reduction of the external diameter, the current density is increased at those places where higher heating capacity is required. The external diameter of the ejection cylinder decreases for example towards the ejection aperture (FIGURE 1); on the other hand, for improving the heat conduction, the external diameter can be generally increased outside the electrically heated region (e.g. at the projecting tip). If desired, the orifice of the heated ejection cylinder can be constricted by screwing on a nozzle.
The sleeve 15', and also the pneumatic cylinder l, is coated with a fluorolefine lining 21 or 22 which is made suitable for gripping (e.g. by sand-blasting), the tube It? being embedded in said lining. The lining 21 has an opening which is connected through bores to the atmosphere and is also cooled by the air stream discharging from the tube lit in the rest position. One or both electrical conductors can be placed inside the compressed air tube adjoining the nozzle 9 for purposes of better handling.
The device operates as follows:
A small rod of suitable dimensions of thermoplastic material or a few granules thereof are placed in the opening of the cylinder 18. The opening-is then optionally constricted by screwing on a nozzle. The heating is switched on and off or increased and reduced by a temperaturecontrolled switch or a time switch adjusted to values obtained by experience. The device is gripped like a pencil and is positioned on the cavity which is to be filled, which is possibly preheated or is pretreated with a solvent or even with a release agent. Finger pressure on the small tube to discharging cooling air in the rest position figure or closing of the opening 12 (FIGURE 2) leads to the hot composition being ejected by means of the mechanism described; pressure can be maintained as long as desired by means of the piston, whereby a union with the foundation material and good filling of the cavity is guaranteed and any possible occurring shrinkage compensated for.
We claim:
it. An ejection device for extruding thermoplastic ma terial, which comprises:
(a) A support housing;
(b) A tubular ejection cylinder for receiving material to be extruded therefrom, said cylinder being made of an electrically conductive material having a selected resistivity for heating said material in response to an electrical current passed through said cylinder, thereby converting said material from a solid to a plastic state;
(c) Means connected to said housing for supporting said ejection cylinder;
(d) A piston slidably disposed within said ejection cylinder for extruding said material therefrom;
(e) Electrically conductive means for passing an electrical current through said ejection cylinder; and,
(f) Pneumatic actuating means for driving said piston whereby said material is extruded from the ejection cylinder in a plastic state.
2. The ejection device of claim It wherein the eiectri current for heating the iaterial flows in an axial direction through the wall of said ejection cylinder, said wall having a thickness which varies axially so as to provide a predetermined axial distribution of resistance throughout said cylinder for controlling the heating of the material therein.
3. The ejection device of claim 1 wherein the pneumatic actuating means for driving the piston includes a pneumatic actuating cylinder having a piston connected to the piston within the ejection cylinder and an external-- ly disposed air bleed orifice in the air supply line to said pneumatic cylinder whereby the ejection of material can be controllably varied by blocking said orifice.
4. The ejection device of claim 1 wherein the pneumatic actuating means for driving the piston includes a pneumatic actuating cylinder having a piston connected to the piston within the ejection cylinder, an air supply line connected to said actutaing cylinder, and a spring tube air discharge line, also connected to said actuating cylinder, said spring tube having an open end for the dis charge of air therefrom, said discharge end being disposed adjacent to a resilient closure disc ailixcd to the housing, whereby the ejection of material can be controllably varied by pressing said spring tube discharge end into abutting contact with said closure disc.
5. The ejection device of claim 1 wherein the ejection cylinder is disposed within an electrically conductive sleeve which is secured to the support housing, said cylinder being supported in spaced relation to said sleeve by means of an electrically conductive spacer and an electrically insulating spacer whereby said sleeve and conductive spacer form part of an electrically conductive path for passing an electric current through said ejection cylinder.
References Cited by the Examiner UNITED STATES PATENTS 1,575,152 3/26 Di Battista 222146 2,086,462 7/37 Bost 222146 X 2,272,780 2/42 Schweyer 2Z2-l46 X 2,567,960 9/51 Myers 222146 X EVERETT W. KIRBY, Primary Examiner.
HADD S. LANE, Examiner.

Claims (1)

1. AN EJECTION DEVICE FOR EXTRUDING THERMOPLASTIC MATERIAL, WHICH COMPRISES: (A) A SUPPORT HOUSING; (B) A TUBULAR EJECTION CYLINDER FOR RECEIVING MATERIAL TO BE EXTRUDED THEREFROM, SAID CYLINDER BEING MADE OF AN ELECTRICALLY CONDUCTIVE MATERIAL HAVING A SELECTED RESISTIVITY FOR HEATING SAID MATERIAL IN RESPONSE TO AN ELECTRICAL CURRENT PASSED THROUGH SAID CYLINDER, THEREBY CONVERTING SAID MATERIAL FROM A SOLID TO A PLASTIC STATE; (C) MEANS CONNECTED TO SAID HOUSING FOR SUPPORTING SAID EJECTION CYLINDER;
US300428A 1963-08-07 1963-08-07 Ejection device Expired - Lifetime US3199740A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314574A (en) * 1965-08-11 1967-04-18 United Shoe Machinery Corp Plastic cement heating, melting and extruding tool
US3443059A (en) * 1965-10-11 1969-05-06 Lockwood Tech Hand tool for applying hot melt adhesives and the like
US4265618A (en) * 1977-09-09 1981-05-05 Solar Energy Technology, Inc. Electrically heated endodontic syringe for injecting thermoplastic material into a root canal cavity
US4861256A (en) * 1986-06-23 1989-08-29 The Anchor Group Injection molding tool
USRE34029E (en) * 1984-05-10 1992-08-11 Willett International Limited Method for applying a hot melt ink to a substrate
US5769272A (en) * 1995-01-25 1998-06-23 Massena; Leo Removable cartridges for a glue gun system
US5881923A (en) * 1997-01-17 1999-03-16 Uniplast, Inc Removable cartridge for a hot glue gun
US5881924A (en) * 1997-01-17 1999-03-16 Uniplast, Inc. Feeder handler for a hot glue gun
US5881912A (en) * 1997-01-17 1999-03-16 Uniplast, Inc. Glue gun with removable barrel
US20070060887A1 (en) * 2005-08-22 2007-03-15 Marsh David A Ophthalmic injector
US20070270744A1 (en) * 2006-05-17 2007-11-22 Bruno Dacquay Limited Reuse Assembly For Ophthalmic Injection Device
US20090036846A1 (en) * 2006-05-17 2009-02-05 Bruno Dacquay Ophthalmic Injection System
US20090093788A1 (en) * 2007-10-09 2009-04-09 Alcon Research, Ltd. Thermal Coefficient Driven Drug Pellet Size For Ophthalmic Injection
US20090093789A1 (en) * 2007-10-09 2009-04-09 Alcon Research, Ltd. Method of Delivering A Rate And Temperature - Dependent Substance Into The Eye
US20090287150A1 (en) * 2006-10-16 2009-11-19 Bruno Dacquay Universal Rechargeable Limited Reuse Assembly For Ophthalmic Hand Piece
US20100030136A1 (en) * 2006-10-16 2010-02-04 Bruno Dacquay Ophthalmic Injection Device Including Dosage Control Device
US20100106083A1 (en) * 2006-10-16 2010-04-29 Alcon Research, Ltd. Method of Operating Ophthalmic Hand Piece with Disposable End
US20100106089A1 (en) * 2006-10-16 2010-04-29 Cesario Dos Santos Temperature control device and thermal sensor assembly for medical device
US20100211044A1 (en) * 2006-05-17 2010-08-19 Alcon Manufacturing, Lted. Battery operated surgical hand piece with disposable end
US8177747B2 (en) 2009-12-22 2012-05-15 Alcon Research, Ltd. Method and apparatus for drug delivery
US8372036B2 (en) 2009-05-06 2013-02-12 Alcon Research, Ltd. Multi-layer heat assembly for a drug delivery device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575152A (en) * 1925-05-22 1926-03-02 Battista Charles Di Spray application of coating compositions
US2086462A (en) * 1936-07-18 1937-07-06 David E Bost Dental instrument
US2272780A (en) * 1939-06-12 1942-02-10 Daniel H Schweyer Thermoelectric marker
US2567060A (en) * 1947-09-24 1951-09-04 Sugar Res Foundation Inc Sugar separation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575152A (en) * 1925-05-22 1926-03-02 Battista Charles Di Spray application of coating compositions
US2086462A (en) * 1936-07-18 1937-07-06 David E Bost Dental instrument
US2272780A (en) * 1939-06-12 1942-02-10 Daniel H Schweyer Thermoelectric marker
US2567060A (en) * 1947-09-24 1951-09-04 Sugar Res Foundation Inc Sugar separation

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314574A (en) * 1965-08-11 1967-04-18 United Shoe Machinery Corp Plastic cement heating, melting and extruding tool
US3443059A (en) * 1965-10-11 1969-05-06 Lockwood Tech Hand tool for applying hot melt adhesives and the like
US4265618A (en) * 1977-09-09 1981-05-05 Solar Energy Technology, Inc. Electrically heated endodontic syringe for injecting thermoplastic material into a root canal cavity
USRE34029E (en) * 1984-05-10 1992-08-11 Willett International Limited Method for applying a hot melt ink to a substrate
US4861256A (en) * 1986-06-23 1989-08-29 The Anchor Group Injection molding tool
US5779103A (en) * 1995-01-25 1998-07-14 Massena; Leonard Glue gun system with removable cartridges
US5769272A (en) * 1995-01-25 1998-06-23 Massena; Leo Removable cartridges for a glue gun system
US5881923A (en) * 1997-01-17 1999-03-16 Uniplast, Inc Removable cartridge for a hot glue gun
US5881924A (en) * 1997-01-17 1999-03-16 Uniplast, Inc. Feeder handler for a hot glue gun
US5881912A (en) * 1997-01-17 1999-03-16 Uniplast, Inc. Glue gun with removable barrel
WO2007024369A3 (en) * 2005-08-22 2009-01-15 Alcon Res Ltd Ophthalmic injector
US20070060887A1 (en) * 2005-08-22 2007-03-15 Marsh David A Ophthalmic injector
CN101495072B (en) * 2005-08-22 2012-04-25 爱尔康研究有限公司 Ophthalmic injector
US7871399B2 (en) 2006-05-17 2011-01-18 Alcon Research, Ltd. Disposable ophthalmic injection device
US8118790B2 (en) 2006-05-17 2012-02-21 Alcon Research, Ltd. Battery operated surgical hand piece with disposable end
US20090036846A1 (en) * 2006-05-17 2009-02-05 Bruno Dacquay Ophthalmic Injection System
US20070270744A1 (en) * 2006-05-17 2007-11-22 Bruno Dacquay Limited Reuse Assembly For Ophthalmic Injection Device
US20080021438A1 (en) * 2006-05-17 2008-01-24 Bruno Dacquay Ophthalmic Injection Method
US7887521B2 (en) 2006-05-17 2011-02-15 Alcon Research, Ltd. Ophthalmic injection system
US20070293820A1 (en) * 2006-05-17 2007-12-20 Bruno Dacquay Disposable Ophthalmic Injection Device
US7815603B2 (en) 2006-05-17 2010-10-19 Alcon Research, Ltd. Ophthalmic injection method
US20100211044A1 (en) * 2006-05-17 2010-08-19 Alcon Manufacturing, Lted. Battery operated surgical hand piece with disposable end
US20100106089A1 (en) * 2006-10-16 2010-04-29 Cesario Dos Santos Temperature control device and thermal sensor assembly for medical device
US20100106083A1 (en) * 2006-10-16 2010-04-29 Alcon Research, Ltd. Method of Operating Ophthalmic Hand Piece with Disposable End
US20100030136A1 (en) * 2006-10-16 2010-02-04 Bruno Dacquay Ophthalmic Injection Device Including Dosage Control Device
US20090287150A1 (en) * 2006-10-16 2009-11-19 Bruno Dacquay Universal Rechargeable Limited Reuse Assembly For Ophthalmic Hand Piece
US9022970B2 (en) 2006-10-16 2015-05-05 Alcon Research, Ltd. Ophthalmic injection device including dosage control device
US9782541B2 (en) 2006-10-16 2017-10-10 Alcon Research, Ltd. Temperature control device and thermal sensor assembly for medical device
US20090093789A1 (en) * 2007-10-09 2009-04-09 Alcon Research, Ltd. Method of Delivering A Rate And Temperature - Dependent Substance Into The Eye
US20090093788A1 (en) * 2007-10-09 2009-04-09 Alcon Research, Ltd. Thermal Coefficient Driven Drug Pellet Size For Ophthalmic Injection
US8372036B2 (en) 2009-05-06 2013-02-12 Alcon Research, Ltd. Multi-layer heat assembly for a drug delivery device
US8632511B2 (en) 2009-05-06 2014-01-21 Alcon Research, Ltd. Multiple thermal sensors in a multiple processor environment for temperature control in a drug delivery device
US8177747B2 (en) 2009-12-22 2012-05-15 Alcon Research, Ltd. Method and apparatus for drug delivery

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