Closure piece for a powder syringe, and powder syringe
Inventors
Glocker, Joachim • Roedle, Tilman
Assignees
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Publication Number
US-10357611-B2
Publication Date
2019-07-23
Expiration Date
Abstract
A closure piece for a powder syringe is proposed, having a main body, a sealing element, which is disposed on the main body such that it rests in a sealing manner against a distal opening of a powder syringe, when the closure piece is disposed in the closing position thereof on the powder syringe, and a channel, which passes through the main body and the sealing element and has a proximal and a distal end. The closure piece is characterized by a retaining element, which is configured and/or can be disposed such that, prior to an activation of the powder syringe, any powder from a chamber of the powder syringe is at least substantially, preferably completely, prevented from penetrating the channel, when the closure piece is disposed in the closing position thereof on the powder syringe.
Core Innovation
A closure piece for a powder syringe includes a main body and an elastic sealing element disposed on the main body. The elastic sealing element rests in a sealing manner against a distal opening of the powder syringe when the closure piece is disposed in a closing position, and a channel passes through the main body and the sealing element with a proximal end and a distal end.
The closure piece further includes a closure piece cap having a projection passing through the channel, and a retaining element for at least substantially preventing powder from penetrating the channel. In the closing position, the retaining element prevents powder coming from a chamber of the powder syringe from penetrating the channel, thereby maintaining the powder syringe function over storage and in any storage orientation.
In preferred embodiments, the retaining element includes a closure piece disc configured to rest in a sealing manner against a narrowing of the powder syringe to prevent the powder from penetrating into the channel. The projection holds the closure piece disc in sealing contact with the powder syringe when the closure piece is in the closing position, and the elastic sealing element has an outside diameter corresponding to an inside diameter of a narrowing of the powder syringe.
Claims Coverage
The independent claims (clm-00001, clm-00011, clm-00018) cover a closure piece for a powder syringe with an elastic sealing element and a through-channel that is prevented from powder penetration by a retaining element, including specific disc-and-projection retention and an inside/outside diameter correspondence for sealing at a narrowing. Each independent claim includes multiple structural relationships that together define how the channel is sealed against powder penetration in the closing position.
Closure piece with elastic sealing against distal opening and retained disc preventing powder penetration through channel
A closure piece for a powder syringe comprising a main body; an elastic sealing element resting sealingly against a distal opening when disposed in a closing position; a channel passing through the main body and the sealing element with a proximal end and a distal end; a closure piece cap having a projection passing through the channel; and a retaining element for at least substantially preventing powder from penetrating the channel, wherein the retaining element is a closure piece disc configured to rest sealingly against a narrowing to prevent powder penetration, and wherein the projection holds the closure piece disc in sealing contact with the powder syringe in the closing position.
Elastic sealing element with outside diameter corresponding to inside diameter of narrowing and cap holding retained disc
A closure piece for a powder syringe comprising a main body; an elastic sealing element disposed on the main body and resting sealingly against a distal opening when in a closing position; a channel passing through the main body and the sealing element with proximal and distal ends; a closure piece cap for closing the distal end of the channel; and a retaining element being a closure piece disc for resting against a narrowing in the closing position, wherein the closure piece cap includes a rod-like portion passing through the channel and holds the closure piece disc in the closing position, and wherein the elastic sealing element has an outside diameter corresponding to an inside diameter of a narrowing of the powder syringe.
Closure piece combination with distal opening and narrowing and rod-like projection holding disc against narrowing
A closure piece for a powder syringe in combination with the powder syringe, the powder syringe including a distal opening and a narrowing proximate the distal opening, the closure piece comprising a main body; an elastic sealing element disposed on the main body and resting sealingly against the distal opening when disposed in a closing position; a channel passing through the sealing element with proximal and distal ends; a closure piece cap for closing a distal end of the channel; and a closure piece disc disposed within the powder syringe and resting against the narrowing in the closing position, wherein the closure piece cap includes a rod-like projection passing through the channel and the closure piece cap holds the closure piece disc in the closing position, and wherein the elastic sealing element has an outside diameter corresponding to an inside diameter of a narrowing of the powder syringe.
Across the independent claims, the inventive concept centers on preventing powder penetration through a channel of a closure piece in a powder syringe closing position by using an elastic sealing element against a distal opening and a retaining element configured as a closure piece disc that is held by a projection or rod-like portion against a narrowing, with specified diameter correspondence of the sealing element to the narrowing.
Stated Advantages
At least substantially prevents powder from penetrating the channel in the closing position, avoiding clogging by powder entering the channel.
Maintains sealing contact by holding the closure piece disc in sealing contact with the powder syringe when the closure piece is in the closing position.
Documented Applications
Use with a powder syringe having a distal opening and a narrowing proximate the distal opening, and in a dual chamber system configuration.
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