AUTOINJECTOR SYSTEM
First Claim
Patent Images
1. A system for injecting a fluid medicament into a patient which comprises:
- a drive mechanism;
a hypodermic syringe with a needle, wherein the syringe is pre-filled with the fluid medicament and the syringe includes a stopper for expelling the medicament from the syringe through the needle; and
a cassette for receiving and holding the hypodermic syringe, wherein the syringe is engaged with the drive mechanism for movement of the syringe on the cassette, between a first position and a second position, when the cassette is mounted on the drive mechanism.
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Abstract
An autoinjector system for injecting a fluid medicament into a patient includes a re-usable autoinjector, and a disposable cassette loaded with a hypodermic syringe pre-filled with a fluid medicament. The autoinjector includes a first motor for injecting a needle of the hypodermic syringe into the patient and a second motor for expelling the fluid medicament from the syringe.
119 Citations
94 Claims
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1. A system for injecting a fluid medicament into a patient which comprises:
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a drive mechanism; a hypodermic syringe with a needle, wherein the syringe is pre-filled with the fluid medicament and the syringe includes a stopper for expelling the medicament from the syringe through the needle; and a cassette for receiving and holding the hypodermic syringe, wherein the syringe is engaged with the drive mechanism for movement of the syringe on the cassette, between a first position and a second position, when the cassette is mounted on the drive mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for expelling a fluid medicament from a pre-filled hypodermic syringe, wherein the syringe has a needle and a stopper for expelling the medicament from the syringe through the needle, the system comprising:
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a means for holding the syringe in a first position on the holding means to hide the needle; a means for moving the syringe on the holding means between the first position and a second position wherein the needle extends from the holding means for injection of the medicament; and a means for pushing the stopper to expel the medicament from the syringe while the syringe is in the second position. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A drive mechanism for expelling a fluid medicament from a hypodermic syringe, wherein the syringe has a needle and a stopper for expelling the medicament from the syringe through the needle, and wherein the syringe is engaged with a cassette to conceal the needle of the syringe;
- the drive mechanism comprising;
a housing for engagement with the cassette while the needle of the syringe is in a concealed position inside the cassette; a first motor mounted on the housing for moving the syringe and its needle on the cassette from its concealed position to an extended position where the needle is exposed; and a second motor mounted on the housing for pushing the stopper to expel the medicament from the syringe while the syringe needle is in its extended position. - View Dependent Claims (18, 19, 20)
- the drive mechanism comprising;
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21. A system for injecting a fluid medicament into a patient which comprises:
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a cassette having a latch mechanism; a hypodermic syringe engageable with the latch mechanism for holding the syringe on the cassette; an injector having a means for selectively holding the cassette on the injector; a first motor mounted on the injector, the first motor being engageable with the cassette for selectively latching and unlatching the syringe from the cassette, and engageable with the syringe for moving the unlatched syringe on the cassette between a first position and a second position; a second motor mounted on the injector, the second motor being engageable with the syringe for expelling the fluid medicament from the syringe; and a computer mounted on the injector for coordinated control of the first and second motors. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A system for injecting a fluid medicament into a patient which comprises:
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a hypodermic syringe having a syringe chamber for holding the fluid medicament therein, an injection needle extending from the syringe chamber, and a plunger slidably mounted for advancement into the syringe chamber to expel fluid medicament therefrom through the injection needle; a support means for holding the syringe, with the syringe being selectively moveable on the support means between a first position wherein the injection needle is withdrawn and concealed within the support means and a second position wherein the injection needle extends from the support means for expelling the fluid medicament from the syringe; and a drive means engaged with the support means, the drive means being bifurcated to have a first motor for moving the hypodermic syringe on the support means and a second motor for advancing the plunger into the syringe chamber to expel the fluid medicament when the syringe is in the second position. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A method for injecting a fluid medicament from a syringe into a patient comprises the steps of:
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engaging a hypodermic syringe with a cassette, wherein the cassette has a latch mechanism for holding the syringe on the cassette and the syringe includes a syringe chamber for holding the fluid medicament therein, an injection needle extending from the syringe chamber, and a plunger slidably mounted for advancement into the syringe chamber to expel fluid medicament therefrom through the injection needle; holding the cassette on an injector, wherein the injector has a first motor engageable with the cassette for selectively latching and unlatching the syringe from the cassette, and engageable with the syringe for moving the unlatched syringe on the cassette between a first position wherein the injection needle is withdrawn and concealed with the cassette and a second position wherein the injection needle extends from the cassette, and a second motor engageable with the syringe for expelling the fluid medicament from the syringe when the syringe is in the second position, and a computer mounted for coordinating control of the first and second motors; and activating the injector to perform a duty cycle for an injection of medicament from the syringe. - View Dependent Claims (37, 38, 39, 40)
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41. A system for injecting a medicament into a patient, the system comprising:
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an injector; and a medicament cassette; the medicament cassette comprising; a housing; a sleeve movable in the housing between first and second positions; and a syringe comprising a chamber for containing a medicament and an injection needle extending from the syringe chamber, the syringe chamber at least partially disposed in the sleeve, the injection needle having a skin penetrating end opposite the syringe chamber, the skin penetrating end disposed within the housing when the sleeve is in the first position and the skin penetrating end extending out from the housing when the sleeve is in the second position; the injector comprising; a surface for removably mounting the cassette thereon; a motor driven link having a first end engageable with a portion of the sleeve when the cassette is mounted on the surface, the link for moving the sleeve from the first position to the second position. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 87, 88)
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50. A system for injecting a medicament, the system comprising:
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an injector; and a medicament cassette comprising a syringe for containing a medicament; the injector comprising; a plunge rod for expelling the fluid medicament from the syringe; a motor for driving the plunge rod; and a switch operatively coupled to the motor, for allowing a user to select one of a plurality of different medicament injection rates of the system. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A medicament cassette for an autoinjector, the medicament cassette comprising:
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a housing; a sleeve movable in the housing between first and second positions; and a syringe comprising a chamber for containing a medicament and an injection needle extending from the syringe chamber, the syringe chamber at least partially disposed in the sleeve, the injection needle having a skin penetrating end opposite the syringe chamber, the skin penetrating end disposed within the housing when the sleeve is in the first position and the skin penetrating end extending out from the housing when the sleeve is in the second position, wherein a portion of the sleeve engages a drive link of the autoinjector, when the cassette is mounted on or in the autoinjector. - View Dependent Claims (65, 66, 67, 68, 69, 76, 77, 78, 80, 81, 82, 83, 84, 89, 90)
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70. An injector for injecting a medicament into a patient, the injector comprising:
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a surface for removably mounting a cassette thereon, the cassette having disposed therein a sleeve holding a syringe containing the medicament; and a motor driven link having a first end engageable with a portion of the cassette when the cassette is mounted on the surface, the link for moving the sleeve from the first position to the second position. - View Dependent Claims (71, 72, 73, 74, 75)
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85. A system for injecting a medicament into a patient, the system comprising:
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an injector; and a medicament cassette; the medicament cassette comprising; a housing; and a syringe comprising a chamber for containing a medicament and an injection needle extending from the syringe chamber, the injection needle having a skin penetrating end opposite the syringe chamber, the skin penetrating end disposed within the housing when the syringe is in a first position and the skin penetrating end extending out from the housing when the syringe is in a second position; the injector comprising; a surface for removably mounting the cassette thereon; a motor driven link having a first end engageable with a portion of the syringe when the cassette is mounted on the surface, the link for moving the syringe from the first position to the second position. - View Dependent Claims (86)
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91. A medicament cassette for an autoinjector, the medicament cassette comprising:
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a housing; and a syringe comprising a chamber for containing a medicament and an injection needle extending from the syringe chamber, the injection needle having a skin penetrating end opposite the syringe chamber, the skin penetrating end disposed within the housing when the syringe is in a first position and the skin penetrating end extending out from the housing when the syringe is in a second position, wherein a portion of the syringe engages a drive link of the autoinjector, when the cassette is mounted on or in the autoinjector. - View Dependent Claims (92)
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93. A system for injecting a medicament into a patient, the system comprising:
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an injector; and a medicament cassette; the injector comprising; a surface for removably mounting the cassette thereon; and a motor driven link having a first end for operating the cassette in a needle injection mode.
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94. A system for injecting a medicament, the system comprising:
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an injector; and a medicament cassette; the injector comprising; a plunge rod for expelling a fluid medicament from a syringe; a motor for driving the plunge rod; and a switch operatively coupled to the motor, for allowing a user to select one of a plurality of different medicament injection rates of the system.
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Specification