LOW VOLUME ACCURATE INJECTOR
First Claim
1. Substance-administration apparatus, comprising:
- a housing;
a needle, couplable to the housing, having a skin-insertion portion 0.3-2.5 mm in length and an outer diameter that is less than 0.23 mm;
a dosage regulator coupled to the housing, which regulates a dosage of a substance injected in a single injection through the needle, the dosage being selectable in accordance with a setting of the dosage regulator to be one of a plurality of selectable dosages, the plurality of selectable dosages including at least one dosage that is less than or equal to 10 ul;
an injection driver, activatable by a user to drive the substance through the needle, anda motor coupled to the injection driver, the motor being actuated by the dosage regulator in a pulsatile manner so as to produce brief periods of high pressure in the apparatus that expel a predetermined volume of the substance through the needle at a controlled rate.
3 Assignments
0 Petitions
Accused Products
Abstract
Substance-administration apparatus (20) is provided, including a housing (22), and a needle (80), couplable to the housing (22), having a skin-insertion portion 0.3-2.5 mm in length and an outer diameter less than 0.23 mm. A dosage regulator (60) regulates a dosage of substance injected in a single injection through the needle (80). Dosage is selectable by a setting of the dosage regulator (60) as one of a plurality of selectable dosages. At least one dosage is less than or equal to 10 ul. An injection driver (54), activatable by a user, drives the substance through the needle (80). A motor coupled to the injection driver (54) is actuated by the dosage regulator (60) in a pulsatile manner to produce brief periods of high pressure in the apparatus (20) that expel a predetermined volume of the substance through the needle (80) at a controlled rate. Other applications are also described.
57 Citations
29 Claims
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1. Substance-administration apparatus, comprising:
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a housing; a needle, couplable to the housing, having a skin-insertion portion 0.3-2.5 mm in length and an outer diameter that is less than 0.23 mm; a dosage regulator coupled to the housing, which regulates a dosage of a substance injected in a single injection through the needle, the dosage being selectable in accordance with a setting of the dosage regulator to be one of a plurality of selectable dosages, the plurality of selectable dosages including at least one dosage that is less than or equal to 10 ul; an injection driver, activatable by a user to drive the substance through the needle, and a motor coupled to the injection driver, the motor being actuated by the dosage regulator in a pulsatile manner so as to produce brief periods of high pressure in the apparatus that expel a predetermined volume of the substance through the needle at a controlled rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A substance-administration method, comprising:
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regulating a dosage of a substance by selecting one of a plurality of selectable dosages, the plurality of selectable dosages including at least one dosage that is less than or equal to 10 ul; inserting a needle having an outer diameter that is less than 0.23 mm into skin of a subject to a depth of 0.3-2.5 mm; expelling a predetermined volume of the substance through the needle at a controlled rate by producing brief periods of high pressure in a device used to administer the substance; and administering the substance at the selected dosage through the needle. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A substance-administration method, comprising:
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inserting a needle having an outer diameter that is less than 0.23 mm into skin of a subject to a depth of 0.3-2.5 mm; expelling a predetermined volume of the substance through the needle at a controlled rate by producing brief periods of high pressure in a device used to administer the substance; and administering the substance at the selected dosage through the needle.
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Specification