Re-loadable auto injector
First Claim
1. A reloadable auto-injector with a housing for accommodation of structures, the structures comprising:
- a syringe assembly comprising a syringe with a needle, the syringe assembly being movably positioned in the housing between a first position in which the needle is accommodated inside the housing and a second position in which the needle protrudes outside the housing,the syringe assembly further comprisinga plunger rod configured to be advanced in the syringe for delivering at least one dose of medicament,a plunger rod driver being configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering at least one dose of medicament,a syringe driver configured to apply a force to the syringe assembly thereby moving the syringe assembly from the first position to the second position,the auto injector further comprising a reload handle configured to reload the auto injector for injecting a further dose of medicament,wherein the reload handle is connected to the syringe assembly so that user operation of the reload handle is configured to retract the syringe assembly to the first position and to simultaneously reload the syringe driver to thereby ready the auto injector for delivering the further dose of medicament,wherein the syringe driver and the plunger driver are separate driver means,wherein the syringe driver comprises a resilient device,the auto injector further comprising a syringe lock configured to lock the syringe assembly in the first position, and a skin sensor configured to release the syringe lock upon engagement with the skin of a user wherein the skin sensor is activated by pressing the skin sensor onto a user'"'"'s skin,wherein the activation of the skin sensor is configured to cause an upward movement of the skin sensor whereby a skin sensor angled surface is configured to engage with a syringe lock angled surface translating the lateral motion of the skin sensor into angular motion of the syringe lock,wherein the syringe assembly rests on a ledge in the syringe lock to lock the syringe assembly in the first position and wherein the angular motion of the syringe lock releases the syringe assembly,wherein the syringe assembly comprises a syringe assembly tab, the syringe assembly tab being configured to move in a syringe lock guide slot from a released position adjacent the ledge to a syringe lock end stop, andwherein the syringe assembly is moved from the first position to the second position when the syringe assembly tab travels in the syringe lock guide slot from the released position to the syringe lock end stop.
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Accused Products
Abstract
A reloadable auto injector wherein a syringe assembly is movably positioned between a first position in which the needle is accommodated inside a housing and a second position in which the needle protrudes outside the housing. The assembly comprises a syringe, a plunger rod and a plunger rod driver configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering at least one dose of medicament. A syringe driver is configured to apply a force to the assembly thereby moving the assembly from the first position to the second position. A reload handle may be connected to the assembly so that user operation of the reload handle retracts the assembly to the first position and simultaneously reload the syringe driver to thereby ready the auto injector for delivering a further dose of medicament. The plunger rod driver is not re-activated.
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Citations
24 Claims
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1. A reloadable auto-injector with a housing for accommodation of structures, the structures comprising:
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a syringe assembly comprising a syringe with a needle, the syringe assembly being movably positioned in the housing between a first position in which the needle is accommodated inside the housing and a second position in which the needle protrudes outside the housing, the syringe assembly further comprising a plunger rod configured to be advanced in the syringe for delivering at least one dose of medicament, a plunger rod driver being configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering at least one dose of medicament, a syringe driver configured to apply a force to the syringe assembly thereby moving the syringe assembly from the first position to the second position, the auto injector further comprising a reload handle configured to reload the auto injector for injecting a further dose of medicament, wherein the reload handle is connected to the syringe assembly so that user operation of the reload handle is configured to retract the syringe assembly to the first position and to simultaneously reload the syringe driver to thereby ready the auto injector for delivering the further dose of medicament, wherein the syringe driver and the plunger driver are separate driver means, wherein the syringe driver comprises a resilient device, the auto injector further comprising a syringe lock configured to lock the syringe assembly in the first position, and a skin sensor configured to release the syringe lock upon engagement with the skin of a user wherein the skin sensor is activated by pressing the skin sensor onto a user'"'"'s skin, wherein the activation of the skin sensor is configured to cause an upward movement of the skin sensor whereby a skin sensor angled surface is configured to engage with a syringe lock angled surface translating the lateral motion of the skin sensor into angular motion of the syringe lock, wherein the syringe assembly rests on a ledge in the syringe lock to lock the syringe assembly in the first position and wherein the angular motion of the syringe lock releases the syringe assembly, wherein the syringe assembly comprises a syringe assembly tab, the syringe assembly tab being configured to move in a syringe lock guide slot from a released position adjacent the ledge to a syringe lock end stop, and wherein the syringe assembly is moved from the first position to the second position when the syringe assembly tab travels in the syringe lock guide slot from the released position to the syringe lock end stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A reloadable auto-injector with a housing for accommodation structure, the structures comprising:
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a syringe assembly comprising a syringe with a needle, the syringe assembly being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing, the syringe assembly further comprising a plunger rod driver being configured to apply a force to the plunger rod to advance the plunger rod in the syringe for delivering at least one dose of medicament, a syringe driver configured to apply a force to the syringe assembly thereby moving the syringe from the first position to the second position, a reload handle configured to reload the auto injector for injecting a further dose of medicament, wherein the reload handle is connected to the syringe assembly so that user operation of the reload handle is configured to retract the syringe assembly over a top edge of the reload handle to the first position and to simultaneously reload the syringe driver. - View Dependent Claims (22)
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23. A method of operating a reloadable auto injector, the auto injector comprising a housing for accommodation of
a syringe assembly comprising a syringe with a needle, the syringe assembly being movably positioned in the housing between a first position in which position the needle is accommodated inside the housing and a second position in which position the needle protrudes outside the housing, the syringe assembly further comprising a plunger rod driver being configured apply a force to a plunger rod to advance the plunger rod in the syringe for delivering at least one dose of medicament, the housing further accommodating a syringe driver configured to apply a force to the syringe assembly thereby moving the syringe from the first position to the second position, a skin sensor for activation of the auto injector, syringe lock for locking the syringe assembly in the first position, and a reload handle, wherein the method comprises the steps of: -
activating the skin sensor, wherein the syringe lock is rotated, the syringe assembly is released, the syringe assembly is moved from the first position to the second position, and the plunger rod driver is released to deliver a dose of medicament, moving the skin sensor to a forward position to cover the needle, wherein the skin sensor is locked in the forward position, reloading the auto injector by operation of the reload handle, wherein the syringe assembly is moved from the second position to the first position, the syringe driver is reloaded, the syringe assembly is locked in the first position and the skin sensor is unlocked, whereby the auto injector is ready to deliver a further dose of medicament. - View Dependent Claims (24)
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Specification