Becton Dickinson and Company Limited

Endo Pharmaceuticals Solutions Inc.

Midland Medical Devices Holdings, LLC

Other

Braeburn Pharmaceuticals, Inc.

Richard James Caizza

Robert B Odell

Brian H Wayman

Alfred Wesley Prais

Gary R Henniger

Robert Cipoletti

Jon D Swenson

Chad H Smith

Bronwen L Walters

Espen D Karteraas

Simon Cohn

Alexander Schwarz

Andrzej T Baranski

Niall Sweeney

Jon S Bell

Volker Niermann

Paul G Alchas

Peter W Bressler

Aaron M Barere

Jonathan B Gabel

Petr Kuzma

Roger W Hoeck

Harry Quandt

William N Grady

Kris Thiruvillakkat

Richard L Griffith

Marian H Gravel

Michael J Carter

Roger Hoeck

Samual Suresh

Michael Carter

John Pawlowski

Lola Oyibo

P R Samuel Suresh

Jay Bojan

Stephen Bai

Sagarika Bose

Evangelos Loucas Tzanis

Suresh P R Samuel

A medical device for use with a fluid transfer device includes a hub having an open proximal end with a frusto-conically-shaped cavity therein, a distal end and a passageway therethrough. The cavity is part of the passageway. A release element in the passageway of the hub is positioned to block fluid-tight engagement of the frusto-conically-shaped tip with the cavity of the hub. Structure is provided to release at least part of the release element, upon application of a proximally directed force on the hub, to allow the abrupt fluid-tight engagement of the tip and the cavity in the hub.

Controlled release structure for attaching medical devices

Syringe assemblies having a passive disabling system to prevent reuse are provided. According to one or more embodiments, the syringe assembly comprises a barrel, plunger rod and stopper wherein the plunger rod further comprises a flexible protrusion that locks the plunger rod within the barrel. Certain embodiments further include a frangible portion on the plunger rod that breaks when reuse is attempted.

Syringe with disabling mechanism

A syringe assembly includes a syringe barrel having an inside surface defining a chamber, an open proximal end, a distal end, and an outlet; a plunger assembly disposed at least partially within the syringe barrel, including an elongate plunger rod having a locking flange formed thereon; and a plunger head having a distal sealing surface, the plunger rod being engageable with the plunger head such that the plunger rod is adapted to move the plunger head within the chamber of the syringe barrel through an injection cycle; and a flange lock disposed at the open proximal end of the barrel. The flange lock is integral with the open proximal end of the syringe barrel. During the injection cycle, the flange lock engages the locking flange of the plunger rod so as to prevent removal of the plunger rod from the syringe barrel.

Passive reuse prevention syringe that uses a flange lock

Tunneling tool

Insertion tool

A retractable needle syringe having a plunger rod configured to lock in place after retraction of the needle. The plunger rod distal end has a seal configured to advance past a retaining ledge after retraction of the needle, whereby the retaining ledge restricts or inhibits the plunger from proximal movement.

Retractable syringe with locking plunger

A syringe assembly includes a syringe barrel having an inside surface defining a chamber and an outlet. A plunger assembly is disposed within the syringe barrel and includes an elongate plunger rod having a distal end surface, a plunger head having a distal sealing surface and a proximal end surface having a continuous perimeter, and a breakable neck portion integrally connecting the plunger rod and the plunger head. A retaining ring lock is disposed on the inside surface of the barrel and defines an engagement surface about a perimeter of the chamber. The retaining ring lock is adapted to engage and retain the plunger head in a locked position within the chamber. The engagement surface of the retaining ring lock engages the continuous perimeter of the proximal end surface of the plunger head in a perimetrical engagement when the plunger head is in the locked position.

Passive reuse prevention syringe that uses a retaining ring lock

A retractable needle syringe having a segmented retaining ledge at the distal end of the syringe barrel. The retaining ledge has uniformly spaced members configured to enable the retaining ring to break from the needle stem with a reduced plunger engagement force, which provides an improved tactile feeling of the syringe plunger and comfort of use. The segmented retaining ledge also makes it easier to install the needle stem and retaining ring in the barrel distal end, such that it snaps into place therepast with less axial force.

Retractable syringe with segmented retaining ledge

Various embodiments of syringe assemblies include a syringe barrel and a substantially conical tip or outlet disposed on the distal end of the barrel. The substantially conical tip includes a locking mechanism that engages an extension of a plunger assembly extending from a distal end of the plunger assembly so as to retain the extension within the substantially conical tip or outlet upon full injection of the contents of the syringe to a patient. According to one embodiment, a plunger head of the plunger assembly is slidably disposed on the extension. According to another embodiment, a separate hub, which holds a needle cannula, is disposed on an outlet at the distal end of the syringe barrel, which contains the locking mechanism. According to a further embodiment, the locking mechanism includes a locking clip disposed within the substantially conical tip of the syringe assembly.

Passive reuse prevention syringe that uses a tip lock

Syringe assemblies having a passive disabling system to prevent reuse are provided. According to one or more embodiments, the syringe assembly comprises a barrel, plunger rod and stopper wherein the plunger rod further comprises a flexible protrusion that locks the plunger rod within the barrel. Certain embodiments further include a frangible portion on the plunger rod that breaks when reuse is attempted. One or more embodiments include a plunger rod and stopper attachment that prevents disassembly of the syringe assembly prior to use. Syringe assemblies of one or more embodiments also include visual indicators or markers indicating whether a syringe assembly is used or the plunger rod is locked within the barrel.

Syringe assemblies having a passive disabling system to prevent reuse are provided. In one embodiment, the passive disabling system activates after completion of an injection cycle. An exemplary syringe assembly incorporates a stopper and plunger rod attached in a manner to prevent users from disassembling the syringe prior to completion of the injection cycle. The barrel may also include an annular extension or collar that extends from the proximal end of the barrel. In a specific configuration, the annular extension at least partially envelopes a portion of the thumb press to prevent the user from accessing the thumb press and moving the plunger rod in a proximal direction Syringe assemblies of one or more embodiments also include visual indicators or markers indicating whether a syringe assembly is used or the plunger rod is locked within the barrel.

Syringe assemblies having a passive disabling system to prevent reuse are provided. According to one or more embodiments, the syringe assembly comprises a barrel, plunger rod and stopper wherein the plunger rod further comprises a locking protrusion that locks the plunger rod within the barrel. Certain embodiments further include a frangible portion on the plunger rod that breaks when reuse is attempted. One or more embodiments include a plunger rod and stopper attachment that prevents disassembly of the syringe assembly prior to use. Syringe assemblies of one or more embodiments also include visual indicators or markers indicating whether a syringe assembly is used or the plunger rod is locked within the barrel.

A syringe assembly having passive disabling structure includes a barrel and a plunger rod assembly. The plunger rod assembly includes a plunger rod and a stopper connected by an indexing locking element. The number of strokes of the syringe plunger before the stopper is locked into the barrel rendering the syringe assembly unusable is determined by the number of detents on the plunger rod and stopper which engage the locking mechanism. Upon completion of the final delivery stroke, any attempt to withdraw the plunger rod from the barrel will cause the locking element to engage the barrel and trap the stopper in the barrel preventing further use of the syringe.

Syringe assembly including reuse prevention mechanism

Growing community of inventors

Vernon, NJ, United States of America

Richard James Caizza