Syringe-in-Syringe Hollow Inner Barrel/Plunger With Integral Seal and Rupturable Membrane and Related Kits, Systems and Methods
First Claim
1. A hollow inner plunger for use within a syringe mixing system for mixing a two-part dental composition, the hollow inner plunger comprising:
- a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; and
a sealing plug and a rupturable membrane disposed at the distal end of the body;
wherein the sealing plug and the rupturable membrane are integrally formed together as a single piece.
1 Assignment
0 Petitions
Accused Products
Abstract
A hollow inner plunger (100) for use within a syringe-in-syringe mixing system for mixing a two-part dental composition. The hollow inner plunger includes a body having a continuous cylindrical wall (102) defining an internal chamber (108) for containing a first component (HOa). The body (100) includes a proximal end (104) and a distal end (106). A sealing plug and rupturable membrane (116) are disposed at the distal end of the body, and the sealing plug and rupturable membrane (116) are integrally formed together as a single piece (e.g., formed of a single piece of elastomeric material). An associated syringe-in-syringe mixing system (124) includes a first plunger (126), the hollow inner plunger (100), and a syringe barrel (128) configured to contain a second component (HOb). When assembled, the first plunger (126) is slidably disposed within the hollow inner plunger (100), and the hollow inner plunger (100) is slidably disposed within the syringe barrel (128). The two components (110a, 110b) are initially separated by the rupturable membrane (116).
77 Citations
24 Claims
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1. A hollow inner plunger for use within a syringe mixing system for mixing a two-part dental composition, the hollow inner plunger comprising:
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a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; and a sealing plug and a rupturable membrane disposed at the distal end of the body; wherein the sealing plug and the rupturable membrane are integrally formed together as a single piece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A syringe-in-syringe mixing system for use in mixing a two-part dental composition comprising:
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a first plunger; a hollow inner plunger configured to slidably receive the first plunger therein in sealing engagement, the hollow inner plunger comprising; a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; and a sealing plug and a rupturable membrane disposed at the distal end of the body; wherein the sealing plug and the rupturable membrane are integrally formed together as a single piece; and a syringe barrel configured to contain therein a second component, the syringe barrel being configured to slidably receive the hollow inner plunger therein in sealing engagement. - View Dependent Claims (15, 16, 17)
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18. A syringe-in-syringe mixing system for use in mixing a two-part dental composition comprising:
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a first plunger; a hollow inner plunger configured to slidably receive the first plunger therein in sealing engagement, the hollow inner plunger comprising; a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; and a sealing plug and a rupturable membrane disposed at the distal end of the body, the sealing plug and the rupturable membrane are integrally formed together as a single piece and wherein the rupturable membrane has a thickness between about 0.0005 inch and about 0.04 inch; wherein the internal chamber has a diameter at the distal end of the body that is not more than about 75% of the largest diameter of the chamber; and a syringe barrel configured to contain therein a second component, the syringe barrel being configured to slidably receive the hollow inner plunger therein in sealing engagement. - View Dependent Claims (19, 20, 22)
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21. A method of manufacturing a hollow inner plunger comprising:
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providing a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; providing a sealing plug and a rupturable membrane, the sealing plug and rupturable membrane being integrally formed together as a single piece; and placing the integrally formed sealing plug and rupturable membrane over the distal end of the body.
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23. A method of manufacturing a syringe-in-syringe mixing system comprising:
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inserting a first plunger into a hollow inner plunger such that the first plunger is slidably received within the hollow inner plunger in sealing engagement; introducing a first component into an internal chamber of the hollow inner plunger; placing an integrally formed sealing plug and rupturable membrane over a distal end of the hollow inner plunger; inserting the hollow inner plunger into a syringe barrel such that the hollow inner plunger is slidably received within the syringe barrel in sealing engagement; introducing a second component into an internal chamber of the syringe barrel; and sealing the distal end of the syringe barrel with a cap or plug.
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24. A syringe barrel for use within a syringe-to-syringe mixing system for mixing a two-part dental composition, the syringe barrel comprising:
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a body including a continuous cylindrical wall defining an internal chamber for containing a first component, the body having a proximal end and a distal end; a sealing plug and a rupturable membrane disposed at the distal end of the body, the sealing plug and rupturable membrane being integrally formed together as a single piece; and coupling means disposed at a distal end of the body for coupling the syringe barrel to another syringe barrel so as to allow for syringe-to-syringe mixing.
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Specification