Tamper evident tip cap and syringe
First Claim
1. A tamper evident pre-filled syringe assembly comprising:
- a syringe barrel defining an interior chamber, a proximal end, and a distal end terminating in a tip having an opening extending therethrough, said syringe barrel defining a pressure contained within said interior chamber;
at least one seal associated with the syringe assembly; and
an indicator separate and distinct from and in contact with the at least one seal, said indicator configured for changing state upon movement of the at least one seal caused by a change in the pressure within the interior chamber to indicate tampering of contents within the syringe assembly.
1 Assignment
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Accused Products
Abstract
A pre-filled syringe assembly having a tamper evident tip cap is provided for indicating if the contents of the syringe assembly have been compromised. The syringe barrel has an interior chamber which defines a pressure therein and is sealed at the proximal and distal ends by a first and second seal, respectively, to maintain this pressure. The second seal is formed of a deformable material and a tip cap is located about the second seal and distal end of the syringe barrel. This tip cap includes a viewable indicator representing a change in state of the syringe contents. The indicator has a portion positioned in contact with the second seal such that the first distinguishing feature is viewable through a portion of the cap. Tampering of the contents within the interior chamber causes a change in pressure and movement of the indicator indicating tampering of the syringe assembly.
45 Citations
25 Claims
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1. A tamper evident pre-filled syringe assembly comprising:
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a syringe barrel defining an interior chamber, a proximal end, and a distal end terminating in a tip having an opening extending therethrough, said syringe barrel defining a pressure contained within said interior chamber; at least one seal associated with the syringe assembly; and an indicator separate and distinct from and in contact with the at least one seal, said indicator configured for changing state upon movement of the at least one seal caused by a change in the pressure within the interior chamber to indicate tampering of contents within the syringe assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A tamper evident pre-filled syringe assembly comprising:
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a syringe barrel defining an interior chamber, a proximal end, and a distal end having an opening extending therethrough; a first seal within the interior chamber of the syringe barrel; a second seal sealing the opening of the distal end of the syringe barrel, said second seal being deformable upon a change in pressure within the interior chamber; and an indicator separate and distinct from and associated with the second seal and having a first distinguishing feature indicating an untampered state and a second distinguishing feature indicating a tampered state, wherein the indicator is adapted for movement upon deformation of the second seal caused by a change of pressure within the interior chamber such that the second distinguishing feature is located in a viewable location. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A tamper evident pre-filled syringe assembly comprising:
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a syringe barrel extending between a proximal end and a distal end, the distal end having an opening extending therethrough; a plunger assembly comprising a plunger head extending within the syringe barrel at a position between the proximal end of the syringe barrel and the opening of the distal end forming an interior chamber therebetween, the plunger head forming a first seal within the interior chamber; a second seal sealing the interior chamber adjacent the opening of the distal end of the syringe barrel, said second seal being deformable upon a change in pressure within the interior chamber; and an indicator separate and distinct from and associated with the second seal, the indicator adapted for movement upon deformation of the second seal, wherein tampering of contents within the interior chamber causes a change in pressure within the interior chamber resulting in a deformation of the second seal and movement of the indicator to provide a visual indication of tampering. - View Dependent Claims (24)
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25. A tamper evident pre-filled syringe assembly comprising:
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a syringe barrel defining an interior chamber, a proximal end, and a distal end terminating in a tip having an opening extending therethrough, said syringe barrel defining a pressure contained within said interior chamber; at least one seal associated with the syringe assembly; an indicator in contact with the at least one seal, said indicator configured for changing state upon movement of the at least one seal caused by a change in the pressure within the interior chamber to indicate tampering of contents within the syringe assembly; and a tip cap located about the distal end of the syringe barrel, said tip cap containing at least a portion of said indicator therein and at least one viewing portion for viewing the change of state of said indicator.
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Specification