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US 4,743,229 AGranted
Collagen/mineral mixing device and method
AssigneeCollagen Corporation
InventorGeorge Chu
Life of this patent
Estimating the term…
Abstract
A mixing device for preparing inductive and conductive bone repair compositions is disclosed, along with a method for using the device for preparing such compositions. The device provides a simple and rapid method of making a substantially uniform collagen/mineral bone implant preparation.
Claims9
A method of making a collagen-based bone repair preparation, comprising:
- providing a first and a second syringe each having a hollow barrel substantially closed at one end and open at a second end, said first syringe containing a quantity of a particulate mineral material and said second syringe containing a quantity of reconstituted fibrillar atelopeptide collagen, wherein said first syringe is provided with an air escape means comprising a plunger rod having a porous disk at said one end, said plunger rod being slidably insertable into said first syringe;
- aligning said first and second syringes so that said substantially closed ends of each of said syringes are proximate;
- and
- injecting said fibrillar collagen from said second syringe into said first syringe by applying longitudinal pressure on said plunger rod while maintaining said porous disk in contact with said fibrillar collagen, so that a relatively homogeneous collagen-mineral mixture is provided within said first syringe.
1 more element
A mixing device useful in preparing collagen-mineral bone repair compositions, comprising:
- a first and a second syringe, each having a hollow barrel substantially closed at one end and open at a second end, said first and second syringes provided with adapters at said substantially closed ends joined by a connecting means so that the interiors of said first and second syringes are in fluid communication, wherein said first syringe is provided with an air escape means comprising a plunger rod having a porous disk at said one end, said plunger rod being slidably insertable into said first syringe, and wherein said first syringe is further provided with an extruding means comprising a circumferential groove in said hollow barrel of said first syringe adjacent said substantially closed end.
Dependencies are inferred from the claim text.