# US 7,744,270 B2 · Curable material mixing and delivery device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,270 B2 - Document ID: US7744270B2 - Status: Granted - Kind: B2 - Application number: 11/372,642 - Filed: 2006-03-10 - Published: 2007-09-13 - Granted: 2010-06-29 - Earliest claimed: 2006-03-10 - Assignees: CareFusion 2200, Inc. - Inventors: Michael Plishka; Randall Scott Koplin - Web page: https://patentgrep.com/patent/US7744270B2 ## CPC - A61B 17/8827: {with filtering, degassing, venting or pressure relief means} - A61B 17/8822: {characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum} - B01F 27/1142: of the corkscrew type - B01F 33/50112: {of the syringe or cartridge type} - B01F 35/562: {the mixer or mixing elements being collapsible, i.e. when discharging the products} - A61B 2017/8838: {for mixing bone cement or fluid fillers} - A61F 2002/3009: {Transparent or translucent} - A61F 2250/0071: breakable or frangible - A61F 2250/0091: transparent or translucent - B01F 2101/20: Mixing of ingredients for bone cement - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract An apparatus and method for mixing two components and delivering the mixture to a patient. The apparatus contains a mixing chamber for mixing a liquid component and a powder component. The liquid component and powder component are mixed within the mixing chamber by rotation of a collapsible mixing element. A plunger is then advanced through the mixing chamber to force the mixture out of the mixing chamber and deliver the mixture to the patient. ## Claims ### Claim 1 A device for mixing two components and dispensing a mixture comprising: a mixer section defining a mixing chamber having a first end and a second end; a mixing element holder at the first end of the mixing chamber wherein the mixing element holder defines a passageway between the mixing chamber and the exterior of the mixing chamber; a collapsible mixing element connected with the mixing element holder and operative to mix a first component and a second component within the mixing chamber; and a plunger operative to substantially seal against an interior surface of the mixing chamber wherein the collapsing mixing element collapses at the first end as the plunger is advanced from the second end to the first end, and the mixture is dispensed through the passageway in the mixing element holder. ### Claim 2 (depends on 1) The device of claim 1 wherein the collapsible mixing element is a spring. ### Claim 3 (depends on 1) The device of claim 1 wherein the mixer section defines a reduced diameter section proximal to the first end of the mixing chamber and at least a portion of the mixing element holder is positioned within the reduced diameter section. ### Claim 4 (depends on 1) The device of claim 1 wherein the mixing chamber defines a longitudinal axis and the collapsible mixing element is operative to mix the first component and the second component by rotating around the longitudinal axis. ### Claim 5 (depends on 1) The device of claim 1 wherein the plunger is connected to an injector having a handle and the plunger advances in the mixing chamber by rotating the handle. ### Claim 6 A device for mixing two components comprising: a mixing barrel defining a mixing chamber; a liquid component introduction port on the mixing barrel for introducing a liquid component into the mixing chamber; a spring holder within the mixing chamber; a spring connected with the spring holder operative to rotate about a longitudinal axis of the mixing chamber wherein the spring is the only means for substantially mixing the liquid component and a powder component within the mixing chamber. ### Claim 7 (depends on 6) The device of claim 6 wherein the spring holder defines a passageway between the mixing chamber and the exterior of the mixing chamber. ### Claim 8 (depends on 7) The device of claim 7 wherein mixing of the first component and second component forms a curable material and the passageway is operative to dispense the curable material. ### Claim 9 (depends on 8) The device of claim 8 further comprising a plunger operative to substantially seal against an interior surface of the mixing chamber wherein the spring collapses at an end proximal to the spring holder as the plunger is advanced from the end distal to the spring holder to the end proximal to the spring holder. ### Claim 10 (depends on 9) The device of claim 9 wherein the plunger is connected with an injector having a rotatable handle and the plunger advances in the mixing chamber by rotating the handle. ### Claim 11 (depends on 6) The device of claim 6 wherein the mixing barrel is transparent. ### Claim 12 (depends on 6) The device of claim 6 wherein liquid component is delivered through the liquid component introduction port by a liquid delivery device comprising: an ampule containing a volume of liquid; an elongated ampule holder having a longitudinal axis and having a chamber operative to hold the ampule; at least one breaker pin slidably received within an opening of the ampule holder wherein rotational movement of the ampule holder causes the breaker pin to move radially inward and pierce the ampule. ### Claim 13 (depends on 6) The device of claim 6 wherein liquid component is delivered through the liquid component introduction port by a liquid delivery device comprising: an ampule containing a volume of liquid, the ampule at least partially broken; a base; and a cap removably attached to the base, the cap and base defining a chamber operative to hold the ampule, the cap having an output end for dispensing the liquid. ### Claim 14 A device for mixing two components to form a mixture comprising: a mixer section defining a mixing chamber; a collapsible mixing element holder within the mixing chamber wherein the collapsible mixing element holder defines a passageway between the mixing chamber and the exterior of the mixing chamber; a collapsible mixing element connected to the collapsible mixing element holder operative to rotate about a longitudinal axis of the mixing chamber; and a drive shaft operative to engage the passageway of the collapsible mixing element holder wherein rotation of the drive shaft causes rotation of the collapsible mixing element holder. ### Claim 15 (depends on 14) The device of claim 14 wherein the collapsible mixing element is a spring. ### Claim 16 (depends on 14) The device of claim 14 further comprising a plunger operative to substantially seal against an interior surface of the mixing chamber wherein the collapsible mixing element collapses at an end proximal to the mixing element holder as the plunger is advanced from the end distal to the mixing element holder to the end proximal to the mixing element holder. ### Claim 17 (depends on 16) The device of claim 16 wherein the plunger is connected with an injector having a rotatable handle and the plunger advances in the mixing chamber by rotating the handle.