CASSETTE FOR A HIDDEN INJECTION NEEDLE
First Claim
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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Accused Products
Abstract
A system for injecting a fluid medicament into a patient includes a drive mechanism, and a cassette loaded with a pre-filled hypodermic syringe. When the cassette is loaded, the syringe is held firmly inside and the cassette can be selectively engaged with the drive mechanism. The drive mechanism has two motors. A first motor initially moves the hypodermic syringe from a position inside the cassette where its needle is concealed, to a position where the needle extends from the cassette for insertion into a patient for an injection. With the needle inserted, a second motor pushes the syringe stopper to expel a fluid medicament from the syringe. After an injection, the first motor withdraws the syringe back into concealment inside the cassette, to again firmly hold the syringe on the cassette. The cassette and syringe, in combination, can then be removed from the drive mechanism and discarded.
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Citations
36 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 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, the system comprising:
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a disposable cassette containing a syringe prefilled with a fluid medicant; and an injector comprising a cradle and a drive mechanism, the cradle for receiving and holding the cassette and the drive mechanism for causing the syringe to move in the cassette between a needle concealed position and a needle extended position. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A disposable cassette for use with an injector, the cassette comprising:
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an outer sleeve; an inner sleeve movable within the outer sleeve between first and second positions; and a syringe held by the inner sleeve, the syringe prefilled with a fluid medicant; wherein the syringe is in a needle concealed position when the inner sleeve is in the first position and the syringe is in a needle extended position when the inner sleeve is moved to the second position by a drive mechanism of the injector. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification