Method and a device for preparing a mixture of a solid and a liquid component
First Claim
1. A method of preparing a mixture of a solid, particulate or powdered first component and a liquid second component so as to provide a paste-like material, said method comprising:
- arranging the first component in a first cylinder, the size of particles of said first component being such that coherent liquid-receiving interstices are defined therebetween;
arranging the liquid second component in a second cylinder having a closed first end and an opposite second end, a first end of the first cylinder being arranged in the second end of the second cylinder in a piston-like manner and in sealing relation thereto;
forcing said liquid second component into the first cylinder by relatively moving the first cylinder towards the closed end of the second cylinder while venting the first cylinder at a second end of the first cylinder opposite to said first end thereof, whereby the liquid second component is received in said interstices in said first component thereby mixing said first and second components together, said step of mixing including venting any gaseous material in said first cylinder to the atmosphere during said relative movement thereby to achieve a substantially homogeneous mixture comprising said paste-like material; and
subsequently expelling said mixture of said first component and said liquid second component mixed to form said paste-like material from the first cylinder, said step of expelling comprising forcing said paste-like material toward said closed end of said second cylinder, said closed end of said second cylinder having a discharge orifice disposed therein, through which said paste-like material is discharged.
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Accused Products
Abstract
A mixing device comprises a first cylinder (10) containing a particulate or powdered component (11) and having a closed first end (13, 14) and an opposite second end which is closed by a piston-like venting and filtering assembly (12, 15). The device also comprises a second cylinder (18) containing the liquid component (19) and having a closed end (20, 22) and an opposite open end sealingly receiving the closed end of the first cylinder (10) therein in a piston-like manner. Means (14) are provided for communicating between the inner space of the first and second cylinders (10, 18) through the closed end (13, 14) of the first cylinder (10), when the first cylinder is forced into the second cylinder, whereby liquid from the first cylinder is injected into interstices defined between the particulate component contained in the first cylinder for providing a paste-like material. The communicating means is preferably formed by a breakable membrane (14). The venting and filtering assembly (12, 15) may be used as a piston for discharging the paste-like mixture made from the first cylinder (10). The mixing device is preferably used for mixing components so as to form a bone cement.
133 Citations
36 Claims
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1. A method of preparing a mixture of a solid, particulate or powdered first component and a liquid second component so as to provide a paste-like material, said method comprising:
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arranging the first component in a first cylinder, the size of particles of said first component being such that coherent liquid-receiving interstices are defined therebetween; arranging the liquid second component in a second cylinder having a closed first end and an opposite second end, a first end of the first cylinder being arranged in the second end of the second cylinder in a piston-like manner and in sealing relation thereto; forcing said liquid second component into the first cylinder by relatively moving the first cylinder towards the closed end of the second cylinder while venting the first cylinder at a second end of the first cylinder opposite to said first end thereof, whereby the liquid second component is received in said interstices in said first component thereby mixing said first and second components together, said step of mixing including venting any gaseous material in said first cylinder to the atmosphere during said relative movement thereby to achieve a substantially homogeneous mixture comprising said paste-like material; and subsequently expelling said mixture of said first component and said liquid second component mixed to form said paste-like material from the first cylinder, said step of expelling comprising forcing said paste-like material toward said closed end of said second cylinder, said closed end of said second cylinder having a discharge orifice disposed therein, through which said paste-like material is discharged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mixing device for mixing a solid, particulate or powdered first component and a liquid second component so as to provide a paste-like material therefrom, said device comprising:
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a first cylinder for containing said first component and having a first end and an opposite second end provided with venting means; a second cylinder for containing said liquid second component and having a first end and an opposite second end sealingly receiving the first end of the first cylinder in a piston-like manner; means for providing communication between inner spaces of the first and second cylinders through at least one of said first end of the first cylinder and said second end of said second cylinder, thereby allowing the liquid second component from the second cylinder to be injected into interstices defined between particles of the first component contained in the first cylinder for providing said paste-like material, when said first cylinder is relatively moved into the second cylinder; said venting means comprising means for allowing gaseous matter to be removed to the atmosphere from said first cylinder during relative movement of said first and second cylinders thereby allowing said first and second components to mix to form a substantially homogeneous mixture comprising said paste-like material in said first cylinder; and
further comprising;a discharge orifice at the closed first end of the second cylinder for providing said paste-like material from said first cylinder; and means for expelling said mixed paste-like material out of the first cylinder through the orifice. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification