Genzyme Corporation

Thomas Lever

Alexander Hee-Hanson

Robert Wilson

Michael Parrott

Haiming Wu

Timothy Denyer

Dean Twite

James Bradford

Nicholas Harding

According to a first aspect of this disclosure, there is described an injection device includes: a body; a needle shroud retractable into the body including a shroud pin; a collar rotatable with respect to the body and including a cam track engageable with the shroud pin. The cam track includes: a first portion configured to, during retraction of the needle shroud into the body, guide the shroud pin from an initial position to a hold position and cause the collar to rotate relative to the body; a second portion configured to, during extension of the needle shroud from the body subsequent to the retraction, guide the shroud pin from the hold position to a final position and cause the collar to further rotate relative to the body; and a non-return surface configured to, subsequent to the extension, prevent further retraction of the needle shroud into the body.

Collar cam lock for injection devices

A medicament delivery device is described. The medicament delivery device includes a proximal end and a distal end defining a longitudinal axis; a body; and a button arranged at the proximal end and configured to actuate the medicament delivery device. The medicament delivery device further includes a lock ring configured to rotate relative to the body about the longitudinal axis between a first position in which the button is not permitted to move along the longitudinal axis relative to the body, and a second position in which the button is permitted to move along the longitudinal axis relative to the body; a plurality of first indication elements circumferentially spaced around a first portion of the medicament delivery device; and a plurality of second indication elements circumferentially spaced around a second portion of the medicament delivery device.

Medicament delivery device

The application relates to a lock ring for a medicament delivery device. The lock ring comprises a hollow main body formed from a plurality of circumferentially extending portions. Each portion is defined between tool split lines defining circumferential ends of the portions. Each circumferential end of a portion is connected to an adjacent portion along a tool split line. The main body comprises a plurality of bearing elements configured to contact a body of a medicament delivery device. Each of the plurality of bearing elements is configured to form a low friction rotation interface. At least one of the plurality of bearing elements is formed proximate to one of the circumferential ends of a portion of the main body.

Lock ring for a medicament delivery device

An injection device comprises: an injection device body; a needle shroud comprising a shroud pin; and a collar rotatable with respect to the injection device body and comprising a cam track. During retraction of the needle shroud, a first portion of the cam track guides the shroud pin to a hold position and cause the collar to rotate relative to the injection device body from a first position to a second position. During a subsequent extension of the needle shroud, a second portion of the cam track guides the shroud pin from the hold position to a final position and causes the collar to further rotate relative to the injection device body from the second position to a third position, the second portion comprising a blocking portion configured to prevent extension of the needle shroud from the injection device body when the collar is held in the second position.

Needle shroud latch for injection devices

A damping device for a medicament delivery device, comprising: a generally cylindrical first collar; a housing comprising a generally annular cavity configured to receive at least a portion of the first collar; wherein the first collar is configured to be rotatable relative to the housing about a central longitudinal axis of the damping device, and wherein the cavity is configured to contain a fluid for impeding rotational movement of the first collar relative to the housing; and a sealing arrangement configured to fluidly seal an interface between the housing and the first collar.

Damping device for a medicament delivery device

A medicament delivery device has a needle, a body and a needle cover which is axially movable from an initial position to a holding position to a locked position in which the needle cover covers the distal end of the needle. The device has a biasing member configured to bias the needle cover distally, and a guide member configured to rotate relative to the needle cover. One of the guide member and the needle cover has a pin and the other of the guide member and the needle cover has a guide path for guiding the pin. The guide path has a first ramp, a second ramp and a locking abutment surface. When the needle cover is in the locked position then the locking abutment surface is configured to engage the pin to prevent the needle cover from moving proximally away from the locked position.

A medicament delivery device includes a first component, a second component configured to be movable with respect to the first component, and a temperature-dependent interconnect configured to resist movement of the first component relative to the second component. The temperature-dependent interconnect includes an engagement member and a temperature-dependent material configured to engage each other. The temperature-dependent material has a temperature-dependent material characteristic such that the temperature-dependent material has (i) a first material characteristic at a first temperature of the temperature-dependent material to resist movement of the first component with respect to the second component, and (ii) a second material characteristic at a second temperature of the temperature-dependent material to allow movement of the first component with respect to the second component.

A medicament delivery device includes an actuator including an actuation member configured to be movable by a user to an actuation position to cause a dose of medicament to be dispensed from the medicament delivery device. The actuator is configured to be movable from a deactivated position in which a user is prevented from moving the actuation member to the actuation position to an activated position in which the actuation member is released for movement by a user to the actuation position. The device includes a temperature-dependent actuator configured to move the actuator from the deactivated position to the activated position in response to a change in temperature of the temperature-dependent actuator.

A medicament delivery device includes a needle disposed at a distal end of the medicament delivery device, a body for a syringe, and a needle cover axially movable relative to the body between an extended position in which the needle cover covers the needle and a retracted position for dispensing medicament from the medicament delivery device. The needle protruding from the distal end of the needle cover when the needle cover is in the retracted position. The medicament delivery device includes an actuation member configured to be movable from an initial position to an engaged position such that when the actuation member is in its initial position, the needle cover can be axially moved between its retracted position and its extended position, and when the actuation member is in its engaged position, the actuation member engages with the needle cover to hold the needle cover in its retracted position.

A medicament delivery device has a needle for injecting medicament, a body and a needle cover. The needle cover is axially movable relative to a locked position in which the needle cover covers the distal end of the needle. The device has an inner housing with an aperture. A collar is located at least partially within the inner housing and is configured to rotate relative to the inner housing. The collar has one or more arms. A rotational member rotates the collar from a first position to a second position. When the needle cover is in the locked position and the collar is in the second position then the arm extends radially through the aperture and blocks proximal movement of the needle cover away from the locked position.

The present disclosure relates to a medicament delivery device comprising a housing, a needle, a needle cover, a needle cover biasing member, a drive mechanism, and a needle cover extension mechanism. The needle cover is axially movable between an extended position and a retracted position. The needle cover biasing member is configured to bias the needle cover axially in the distal direction towards the extended position. The needle cover extension mechanism comprises a second biasing member and a release element. The second biasing member is configured to bias the needle cover into its extended position post-use of the device. The release element has a first state configured to prevent the second biasing member from biasing the needle cover into the extended position and a second state configured to allow the second biasing member to bias the needle cover into the extended position.

A medicament delivery device comprises a housing, a needle, a needle cover, a needle cover biasing member, a skin sensor, a skin sensor biasing member, and a retaining mechanism. The needle cover is axially movable between an extended position and a retracted position. The needle cover biasing member is configured to bias the needle cover towards the extended position. The skin sensor extends from the distal end of the needle cover and is configured to contact an injection site. The skin sensor biasing member is configured to bias the skin sensor from a proximal position to a distal position away from the needle cover. The retaining mechanism is configured to temporarily retain the needle cover in the retracted position and transfer at least a part of the force of the needle cover biasing member to the housing to prevent the needle cover biasing member from moving the needle cover distally.

This application relates to an injector device for delivery of a medicament, particularly to an auto-injector device. According to a first aspect of this disclosure, there is described an injection device comprising: an injection device body; a needle shroud retractable into the injection device body comprising a shroud pin; a control spring coupled to the needle shroud and biased to cause the needle shroud to be at least partially extended from the injection device body in an initial position; and a collar rotatable with respect to the injection device body and comprising a cam track engageable with the shroud pin; a hold detent mechanism coupled to the cam track of the collar, wherein the hold detent mechanism is configured to: activate, when the needle shroud is retracted from a first position on the cam track into the injection device body to a hold position on the cam track, by engaging the shroud pin thereby creating a hold detent force opposite a control spring force caused by compression of the control spring during said retraction of needle shroud to said hold position; and deactivate, when the needle shroud is extracted from the hold position on the cam track subsequent to the retraction towards a second position on the cam track, by disengaging the shroud pin thereby releasing the hold detent force and enable the needle shroud to extend from the injection device body to the second position on the cam track; and wherein the hold detent mechanism further comprises a non-return surface configured to, subsequent to the extension of the needle shroud, prevent further retraction of the needle shroud into the injection device body along the cam track towards the hold position.

Collar hold detent mechanism and lock for injection devices

Some injection devices include an injection device body, a needle shroud retractable into the injection device body, a control spring coupled to the needle shroud and biased to cause the needle shroud to be at least partially extended from the injection device body in an initial position, and a hold detent mechanism coupled to at least the needle shroud. The hold detent mechanism is configured to (i) activate, when the needle shroud is retracted from the initial position into the injection device body to a hold position, to create a hold detent force, and (ii) deactivate, when the needle shroud is extracted from the hold position subsequent to the retraction, to release the hold detent force and enable the needle shroud to extend from the injection device body to substantially the initial position.

Hold detent mechanism for injection devices

A medicament delivery device for reducing a force required to activate the device includes a needle disposed at a distal end of the device, a needle cover, and a body. The needle cover is axially movable relative to the body between an initial position in which the needle cover covers the needle and an activated position for dispensing a medicament. The needle protrudes from a distal end of the needle cover when the needle cover is in the activated position. The medicament delivery device includes a carrier configured to support a syringe. The carrier is disposed within the needle cover and includes a deformable element configured to change from a first configuration in which the deformable element is engaged with the needle cover to a second configuration in which the deformable element is not engaged with the needle cover.

Growing community of inventors

Melbourn, United Kingdom

Thomas Lever