Systems and methods for automatic medical injection with safeguard
First Claim
1. A medical injection system, comprising:
- a needle guard, comprising;
a cartridge housing coupled with a release mechanism and configured to house a medical cartridge comprising a needle located on a distal end, a plunger and a carrier configured to carry a dose;
a shield having an open proximal end and an open distal end, the shield coupled with the cartridge housing and the release mechanism and configured to extend between a retracted and an extended position that substantially covers the needle when the cartridge is housed in the cartridge housing, wherein the release mechanism is configured to maintain the shield in the retracted position and allow the shield to extend upon engagement of the release mechanism; and
an automatic injection system configured to house the needle guard and the medical cartridge and configured to inject the dose when activated, the automatic injection system comprising;
a drive system configured to depress the plunger and engage the release mechanism when the automatic injection system is activated; and
an activation system configured to activate the automatic injection system.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical injection system includes a needle guard and an automatic injection system. The needle guard has a cartridge housing coupled with a release mechanism and configured to house a medical cartridge having a needle, a plunger and a carrier configured to carry the dose. Coupled with the cartridge housing and the release mechanism is a shield that is extendable between a retracted and an extended position that substantially covers the needle. The release mechanism is engageable and configured to maintain the shield in the retracted position and allow the shield to extend upon engagement. The automatic injection system can be configured to house the needle guard and configured to inject the dose when activated. The automatic injection system has a drive system configured to depress the plunger and engage the release mechanism when the automatic injection system is activated, and an activation system configured to activate the automatic injection system.
204 Citations
48 Claims
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1. A medical injection system, comprising:
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a needle guard, comprising;
a cartridge housing coupled with a release mechanism and configured to house a medical cartridge comprising a needle located on a distal end, a plunger and a carrier configured to carry a dose;
a shield having an open proximal end and an open distal end, the shield coupled with the cartridge housing and the release mechanism and configured to extend between a retracted and an extended position that substantially covers the needle when the cartridge is housed in the cartridge housing, wherein the release mechanism is configured to maintain the shield in the retracted position and allow the shield to extend upon engagement of the release mechanism; and
an automatic injection system configured to house the needle guard and the medical cartridge and configured to inject the dose when activated, the automatic injection system comprising;
a drive system configured to depress the plunger and engage the release mechanism when the automatic injection system is activated; and
an activation system configured to activate the automatic injection system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A medical injection system, comprising:
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a needle guard configured to house a medical cartridge comprising a proximal end and a needle located at a distal end;
an automatic injection system configured to house the medical cartridge and needle guard and configured to inject a dose from the medical cartridge upon activation of the injection system, wherein activation of the injection system causes the needle guard to extend to an extended position that substantially covers the needle. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A needle guard, comprising:
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a cartridge housing coupled with a release mechanism and having a fingergrip-less outer surface, the cartridge housing configured to house a medical cartridge comprising a needle located on a distal end, a plunger and a carrier configured to carry a dose;
the shield having an open proximal end and an open distal end and a fingergrip-less outer surface, the shield slideably coupled with the cartridge housing and a release mechanism and configured to extend between a retracted and an extended position that substantially covers the needle when the cartridge is housed in the cartridge housing;
the release mechanism configured to retain the shield in the retracted position and allow the shield to extend upon engagement of the release mechanism; and
a bias member in contact with the shield and the cartridge housing and configured to apply pressure distally to the shield to extend the shield;
wherein the needle guard is housable within an automatic injection system.
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34. An automatic injection system, comprising:
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an activation system configured to activate the automatic injection system;
a distal housing having an open proximal end and an open distal end;
a proximal housing having an open distal end and attachable to the proximal end of the distal housing, wherein the proximal and distal housing are configured to house a needle guard and a medical cartridge having a needle on a distal end, a plunger on a proximal end and a carrier configured to carry a dose located therebetween, wherein the dose is injected from the distal end of the distal housing;
a sleeve configured to receive the needle guard and slide axially within the automatic injection system;
a sleeve bias member located in contact with the sleeve and the distal housing and configured to apply pressure proximally to the sleeve and to compress upon activation of the automatic injection system prior to depression of the plunger;
a drive system coupled with the proximal housing and configured to depress the plunger and engage the release mechanism when the automatic injection system is activated, the drive system comprising;
a driver releasably coupled with the activation system, axially movable within the proximal housing between a retracted and an extended position and configured to contact the proximal end of the plunger; and
a drive bias member configured to apply pressure to the driver, wherein the pressure appliable by the drive bias member is sufficient to depress the plunger and further wherein activation of the activation system releases the driver to allow depression of the plunger.
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35. A method of injecting a dose from a medical cartridge having a needle located on a distal end and a plunger located on a proximal end, comprising:
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activating an automatic injection system to inject a dose from a medical cartridge housed within the automatic injection system, wherein activation allows a plunger extending from the proximal end of the medical cartridge to be depressed and a shield located on a needle guard housing the medical cartridge to extend distally;
removing the needle guard from the activation system with the shield in an extended position substantially covering the needle. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification