Device and method for manually opening glass ampules and a cementing device

Patent metadata

Field	Value
Publication number	US-10518232-B2
Application number	US-201615273956-A
Country	US
Kind code	B2
Filing date	Sep 23, 2016
Priority date	Sep 25, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

Devices and methods manually open glass ampules within the devices. One device may include a holder having at least one deformable side wall, a supporting element, and at least one strainer/filter arranged below the holder so that the content of the opened glass ampule may flows therethrough. A first lever of the device may pivot around a first axis and a free end of the first lever may be pressed against the deformable side wall of the holder. A second lever of the device may pivot around a second axis that may divide the second lever into a short lever arm and a long lever arm. The short lever arm may be pressed against the first lever and a glass ampule may be broken open by pressure of the free end of the first lever.

First claim

The invention claimed is:

1. A device for manually opening glass ampules within the device, wherein the device comprises:
a holder with side walls closed at least in sections for holding glass ampules, wherein the holder comprises at least one deformable closed side wall and a supporting element located opposite to the at least one deformable closed side wall;
at least one selected from a strainer and a filter arranged below the holder so that content of an opened glass ampule is flowable through the at least one selected from the strainer and/or the filter;
a first lever pivotable around a first axis such that the first lever rotates against the holder, wherein the first lever has a total length defined between a first end and an opposite second end, wherein the first end comprises the first axis and the second end is a free end of the first lever that is pressable against the deformable closed side wall of the holder; and
a second lever pivotable around a second axis such that the second lever rotates against the holder, wherein the second axis divides the second lever into a short lever arm and a long lever arm,
wherein one end of the short lever arm is pressable through manual operation of the long lever arm against the first lever such that the free end of the first lever presses against the deformable closed side wall and deforms said deformable closed side wall such that a glass ampule, when located in the holder, is broken open by the pressure of the free end of the first lever.

2. The device according to claim 1 , wherein the holder is a hollow cylinder and/or the holder consists of an elastomer or comprises an insertion made of an elastomer.

3. The device according to claim 1 , further comprising:
a ledge for placing on a glass ampule arranged in the holder, wherein the ledge is smaller than half the area of the surface of the ampule floor or the ampule profile of a glass ampule to be held by the holder.

4. The device according to claim 3 , wherein the ledge is arranged in the holder such that a distance between the ledge and the at least one selected from the strainer and the filter is the same as or greater than the outer diameter of the glass ampule to be held by the holder.

5. The device according to claim 3 , wherein the ledge is arranged in the holder such that a glass ampule to be held by the holder stands on the ledge such that the free end of the first lever lies above the ampule floor on the outer side of the deformable closed side wall.

6. The device according to claim 1 , wherein, when the second lever is operated, the free end of the first lever presses onto the deformable closed side wall such that a vector of a force comprises a component which is oriented in a direction of the at least one selected from the strainer and the filter and/or which presses a glass ampule, to be held in the holder, into the holder in a direction of the ledge.

7. The device according to claim 1 , wherein, on the free end of the first lever on a side facing towards the holder, a cutting edge is arranged.

8. The device according to claim 1 , wherein the length ratio between the long lever arm and the short lever arm is at least 5 to 1.

9. The device according to claim 1 , wherein a glass ampule is arranged in the holder and the glass ampule contains a monomer liquid for producing a medical bone cement, wherein the glass ampule, arranged in the holder, is the glass ampule that is manually openable in the device.

10. The device according to claim 1 , wherein the second lever is rotatable in a plane in which the first lever is rotatable, wherein the movement of the second lever engages with the movement of the first lever.

11. The device according to claim 1 , wherein the second axis of the second lever is arranged above the first axis of the first lever.

12. A medical cementing device for mixing a PMMA bone cement, the medical cementing device comprising:
the device according to claim 1 ; and
a cartridge with a mixing chamber containing a bone cement powder, wherein the mixing chamber is connected with the holder below the at least one selected from the strainer and the filter such that it is permeable to liquids.

13. The medical cementing device according to claim 12 , further comprising:
a glass ampule arranged in the holder and comprising
a monomer liquid;
a pump, with which the monomer liquid is to be pumped into the cartridge;
a connection line, through which the monomer liquid is to be transported from the glass ampule into the cartridge;
a manually operated stirring unit, with which the content of the cartridge can be mixed;
a delivery piston which is provided in the cartridge such that it can be moved in the longitudinal direction and by which the mixed bone cement is to be discharged from the cartridge;
a gas-permeable connection means in the delivery piston, which connects the interior chamber of the cartridge with the external environment; and
a foot element which is connected to the holder, the cartridge and the levers, and with which the cementing device can be placed onto an even surface.

14. The cementing device according to claim 13 , wherein the pump is a suction pressure pump, wherein a pressure pump element of the suction pressure pump is connected to the holder and the suction pump element of the suction pressure pump is connected to the mixing chamber of the cartridge.

15. A method comprising:
opening a glass ampule positioned within the device, according to claim 1 , by manually rotating the long lever arm of the second lever around the second axis.

16. The method according to claim 15 , wherein at least one selected from the glass ampule is inserted into the holder prior to the manual operation of the second lever and the glass ampule is inserted with an ampule floor of the glass ampule inserted first into the holder.

17. The method according to claim 15 , wherein, following the opening of the glass ampule, a monomer liquid runs out of the glass ampule through the at least one selected from the strainer and the filter and is transported into a mixing chamber of the cartridge in which a bone cement powder is located, wherein subsequently, the bone cement powder and the monomer liquid are mixed in the mixing chamber of the cartridge.

18. The device according to claim 2 , wherein the elastomer has a shore hardness of greater than 60 and the elastomer is a silicon rubber or an ethylene propylene diene rubber.

19. The medical cementing device according to claim 13 , wherein the pump is a suction pressure pump, wherein the pressure pump element of the suction pressure pump is connected to the holder and the suction pump element of the suction pressure pump is connected to the mixing chamber of the cartridge via the gas-permeable connection means in the delivery piston.

20. A device for manually opening a glass ampule held within the device, the device comprising:
a holder with side walls closed at least in sections, wherein the holder comprises at least one deformable closed side wall and a supporting element located opposite to the at least one deformable closed side wall;
at least one selected from a strainer and a filter arranged below the holder;
a first lever pivotable around a first axis such that the first lever rotates against the holder, wherein the first lever comprises a free end that is pressable against the deformable closed side wall of the holder; and
a second lever pivotable around a second axis such that the second lever rotates against the holder, wherein the second

Assignees

• Heraeus Medical Gmbh

Inventors

• Vogt Sebastian

Classifications

• B02C19/0087 Primary

  for glass bottles · CPC title

• A61B2017/8838

  for mixing bone cement or fluid fillers · CPC title

• A61B17/8833

  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 title

• A61B17/8827

  with filtering, degassing, venting or pressure relief means · CPC title

• B67B7/92

  by breaking, e.g. for ampoules · CPC title