Precision low-dose, low-waste syringes and ergonomic attachments therefor
First Claim
1. An attachment for controlling the operation of a syringe, the syringe comprising a barrel having an outer surface and a plunger, the attachment comprising:
- a main body;
a syringe plunger engaging end extending from the main body and adapted to engage the syringe plunger;
a guide extending from the main body for supporting the main body for movement relative to the syringe barrel; and
a rolling element, mounted for rotation relative to the main body and adapted to engage the syringe barrel outer surface such that rotation of the rolling element causes the attachment to move relative to the syringe barrel;
whereby a user may actuate the plunger by rotation of the rolling element.
1 Assignment
0 Petitions
Accused Products
Abstract
Precision low-dose, low-waste syringe configurations have a reduced diameter lumen for dispensing 0.01 ml increments of contents. Plunger and lumen configurations and a needle interface eliminate dead space. Ergonomic attachments improve the control and precision of delivery of syringes. An attachment main body includes a gripping surface to permit a user to engage the attachment and move the attachment main body, and thus the syringe plunger relative to the syringe barrel using sliding movement. Optical enhancement features are provided on the attachment to improve the readability of gradations and plunger position. The attachment may be provided with an assist feature, which may be a traction wheel mounted on the attachment body. An alternative configuration suitable for syringe contents of higher viscosity may include a pair of toothed pinion gears on a wheel and which cooperate with respective toothed racks formed on or fastened to the syringe body.
55 Citations
30 Claims
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1. An attachment for controlling the operation of a syringe, the syringe comprising a barrel having an outer surface and a plunger, the attachment comprising:
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a main body; a syringe plunger engaging end extending from the main body and adapted to engage the syringe plunger; a guide extending from the main body for supporting the main body for movement relative to the syringe barrel; and a rolling element, mounted for rotation relative to the main body and adapted to engage the syringe barrel outer surface such that rotation of the rolling element causes the attachment to move relative to the syringe barrel; whereby a user may actuate the plunger by rotation of the rolling element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for precision controlled delivery of a therapeutic composition comprising:
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a syringe having a plunger and a barrel; an attachment for enabling control of movement of the syringe plunger relative to the barrel, the attachment comprising; a main body; a syringe plunger engaging end extending from the main body and adapted to engage the syringe plunger; a guide extending from the main body for supporting the main body for movement relative to the syringe barrel; and a rolling element, mounted for rotation relative to the main body and adapted to engage an outer surface of the syringe barrel such that rotation of the rolling element causes the attachment to move relative to the syringe barrel; whereby a user may actuate the plunger by rotation of the rolling element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An attachment for controlling operation of a syringe, the syringe comprising a barrel having an outer surface and a plunger, the attachment comprising:
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a main body;
a syringe plunger engaging end extending from the main body and adapted to engage the syringe plunger;a guide extending from the main body for supporting the main body for movement relative to the syringe barrel; and an assist feature to enhance control of the movement of the attachment relative to the syringe barrel, the assist feature including a wheel configured to engage and move incrementally along the outer surface of the syringe barrel with a rolling motion, whereby a user may actuate the plunger by rotation of the wheel. - View Dependent Claims (28, 29, 30)
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Specification