Device for producing a hardenable mass

• US 8,297,831 B2
• Filed: 09/08/2009
• Issued: 10/30/2012
• Est. Priority Date: 06/22/2004
• Status: Active Grant

• Current Assignee: BONE Support NYA AB
• Original Assignee: Bone Support AB (BONESUPPORT HOLDING AB)
• Inventors: Lidgren, Lars, Jönsson, Sven, Lundgren, Torgny, Brorsson, Fritz, Gullwi, Östen
• Primary Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US12/585,194
• Publication Number:
  US 20100008181A1
• Time in Patent Office: 1,148 Days
• Field of Search: 366/268, 366/269, 604/187, 604/87
• US Class Current: 366/268
• CPC Class Codes: A61B 17/8816 characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
• CPC Class Codes: A61B 17/8827 with filtering, degassing, venting or pressure relief means
• CPC Class Codes: A61B 17/8833 Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
• CPC Class Codes: A61F 2002/4685 by means of vacuum
• CPC Class Codes: A61M 5/31596 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: B01F 2101/20 Mixing of ingredients for bone cement
• CPC Class Codes: B01F 31/441 performing a rectilinear reciprocating movement
• CPC Class Codes: B01F 33/50112 of the syringe or cartridge type
• CPC Class Codes: B01F 33/70 Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
• CPC Class Codes: B01F 35/754251 reciprocating in the mixing receptacle
• CPC Class Codes: B29B 7/005 for mixing in batches
• CPC Class Codes: B29B 7/26 for discharging, e.g. doors

Abstract

The present invention relates to a device for producing a hardenable mass, preferably bone substitute and/or bone reinforcing material or bone cement or similar material. A mixing container (3) has a mixing space (4) in which at least one powder and at least one liquid component (5, 6) are mixed to provide the hardenable mass (2). A piston means (7) is provided in the mixing space (4) of the mixing container (3). At least one means (8) which is rotatable relative to the mixing container (3) cooperates with the piston means (7) for, in a retaining position (P1), retaining said piston means (7) relative to the mixing container (3) and, by rotation to a release position (P2), releasing the piston means (7) such that said piston means can move in a direction (U) towards at least one opening (49) through which said mass (2) can pass out of the mixing space (4). The rotatable means (8) is provided such that it in its release position (P2) can follow the piston means (7) in the mixing space (4) in the direction (U) towards said opening (49).

Claims

1. A device for receiving and discharging a hardenable mass, comprising:

a distributor device having a plurality of outlets and a single inlet; and

a dispensing device comprising;

a container having a first open end, a second open end, and a lumen therebetween, wherein the first open end is configured to be connected to one of the outlets of the distributor device;

a movable piston positioned within the lumen of the container and adjacent to one of the first and second open ends; and

an opening in a body of the container, the opening configured to permit gas to escape the container.

2. The device of claim 1, wherein the body is cylindrical, and wherein the opening is disposed in a side of the cylindrical body.

3. The device of claim 2, wherein the opening includes a groove in a side of the container.

4. The device of claim 1, wherein the lumen defines a space configured to receive the hardenable mass.

5. The device of claim 1, wherein the piston is longitudinally moveable relative to the container.

6. The device of claim 5, wherein the container body defines a volume configured to receive the hardenable mass.

7. The device of claim 6, wherein the piston is configured to move longitudinally within the body to increase or decrease the volume configured to receive the hardenable mass.

8. The device of claim 1, wherein a plunger portion of the piston substantially closes the second open end of the container.

9. The device of claim 1, wherein the first open end is further configured to be connected to a needle or a cannula.

10. The device of claim 1, wherein the opening is positioned adjacent one of the first and second open ends.

11. The device of claim 1, wherein the opening is located such that a plunger portion of the piston is positionable between the opening and one of the first and second open ends.

12. The device of claim 1, wherein the opening is located such that, in a first configuration of the device, a plunger of the piston is positioned between the opening and the second open end of the container, and in a second configuration of the device, the plunger is positioned between the opening and the first open end of the container.

13. The device of claim 1, wherein one of the first and second open ends is configured both to receive and to dispense the hardenable mass.

14. The device of claim 1, further comprising:

a mixing device for producing a hardenable mass and comprising mixing container defining a mixing space for mixing the hardenable mass, the mixing container having an output opening configured to discharge mixed hardenable mass, wherein the output opening is further configure to connect to the single inlet of the distributor device.

15. The device of claim 14, wherein the lumen of the container of the dispensing device is smaller than the mixing space of the mixing device.

16. A device for receiving and discharging a hardenable mass, comprising:

a distributor device having a plurality of outlets and a single inlet; and

a dispensing device comprising;

a body having a first open end, a second open end, and a gas opening disposed therebetween, wherein the body defines a lumen, and wherein the first open end is configured to be connected to one of the outlets of the distributor device; and

a movable piston positioned within the lumen of the body, wherein the piston is configured to move between a first position proximate the first open end and a second position proximate the second open end,

wherein the gas opening is located such that, in a first configuration of the device, a plunger of the piston is positioned between the gas opening and the second open end of the body, and in a second configuration of the device, the plunger is positioned between the gas opening and the first open end of the body.

17. A device for receiving and discharging a hardenable mass, comprising:

a distributor device having a plurality of outlets and a single inlet; and

a dispensing device comprising;

a substantially cylindrical container having a first open end, a second open end, and a filling space therebetween, wherein the first open end is configured to be connected to one of the outlets of the distributor device;

a piston disposed within the cylindrical container and in fluid communication with the filling space; and

a gas opening disposed in a wall of the cylindrical container, wherein the gas opening is configured to permit gas within the filling space to escape the filling space,

wherein the gas opening is located in between the first and second open ends.

18. The device of claim 17, wherein the gas opening is a groove.

19. The device of claim 18, wherein the groove extends beyond a plunger portion of the piston when the plunger portion is disposed at a location adjacent to the second open end.

20. A device for receiving and discharging a hardenable mass, comprising:

a container defined by at least one wall, having a first open end, a second open end, and a lumen therebetween;

a movable piston positioned within the lumen of the container, wherein the piston is configured to move between a first position proximate the first open end and a second position proximate the second open end; and

a groove in a wall of the container configured to permit gas to escape the container, the groove having a length extending between a first point and a second point on the wall;

wherein, when the piston is in the second position, a portion of the groove length extends from a position on the wall proximate of the piston to a position on the wall distal of the piston.

21. The device of claim 20, wherein the lumen defines a space configured to receive the hardenable mass.

22. The device of claim 20, wherein the piston is longitudinally moveable relative to the container.

23. The device of claim 20, further comprising a distributor device having a plurality of outlets and a single inlet, wherein the first open end is configured to be connected to the distributor device.

24. The device of claim 20, wherein the first open end is configured to be connected to a needle or a cannula.

25. The device of claim 20, wherein the container body defines a volume configured to receive the hardenable mass.

26. The device of claim 20, wherein the piston is configured to move longitudinally within the body to increase or decrease the volume configured to receive the hardenable mass.

27. A device for receiving and discharging a hardenable mass, comprising:

a distributor device having a plurality of outlets and a single inlet; and

a dispensing device comprising;

a hollow cylindrical container having

at least one sidewall, the at least one sidewall including a gas opening configured to permit gas to escape the hollow cylindrical container;

a distal end configured to be connected to one of the outlets of the distributor device; and

a proximal end;

a piston disposed within the hollow cylindrical container;

a plunger portion of the piston substantially sealing the proximal end from passage of the hardenable mass; and

wherein, when the distal end is connected to one of the outlets of the distributor device, the plunger portion and gas opening cooperate to define a filling space such that

when the plunger portion is positioned in front of the gas opening, the space is sealed thereby prohibiting gas to escape through the gas opening, and

when the plunger portion is positioned behind the gas opening, the space allows gas to escape through the gas opening.

28. A method for transferring a hardenable mass from a mixing container to a dispensing device, including:

providing a dispensing device comprising a substantially cylindrical container having at least one open end and a filling space, a piston disposed within the cylindrical container and in fluid communication with the filling space, and a gas opening disposed in a wall of the cylindrical container, wherein the gas opening is configured to permit gas within the filling space to escape the filling space,

connecting the at least one open end of the dispensing device to one of a distributor device, a needle, or a cannula;

transferring a hardenable mass from the mixing container into the filling space of the dispensing device through one of the distributor device, the needle, or the cannula and into the container and toward a plunger portion of the piston; and

allowing gas to escape the hollow cylindrical container as the hardenable mass moves towards the plunger portion.

29. The method of claim 28, further including positioning the plunger portion at a location such that the distance between the gas opening and the at least one open end of the dispensing device is shorter than the distance between the plunger portion and the at least one open end of the dispensing device.

30. The method of claim 28, further including applying pressure to the piston to dispense the hardenable mass from the at least one open end of the dispensing device.