Elastomeric syringe actuation device
First Claim
1. A device for actuating a syringe having a barrel for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel, the device comprising:
- grommet means for seating against the proximal end of the barrel around the outlet tip;
plunger engagement means for engaging the actuation portion; and
elastomeric actuation means for elastically connecting the grommet means and the plunger engagement means, so that when the grommet means is seated against the proximal end of the barrel and the plunger engagement means is engaging the actuation portion with the plunger in the withdrawn position, the plunger is biased toward the inserted position.
8 Assignments
0 Petitions
Accused Products
Abstract
An elastomerically-actuated syringe actuation device comprises a grommet that fits around the outlet tip of a syringe; an end cap, having a finger grip, that engages the distal end of the plunger of the syringe; and an elastomeric element that connects the grommet and the end cap. When the grommet is seated around the outlet tip, and the end cap is engaged against the distal end of the plunger with the plunger in its withdrawn position, the elastomeric element is stretched along the syringe, between the grommet and the end cap, thereby biasing the plunger toward its inserted position. As the elastomeric element restores itself to its unstretched configuration, it provides a driving force against the plunger to push the plunger into the barrel of the syringe, thereby expressing the fluid contained in the barrel out of the outlet tip. In one embodiment, the elastomeric element is an elastic strap having first and second ends removably secured to the grommet so as to be length-adjustable, and an intermediate portion secured to the end cap. In a second embodiment, the elastomeric element is a continuous elastic band removably secured to both the grommet and the end cap. In both embodiments, the elastomeric element is secured to the end cap so that it is spaced away from the barrel of the syringe.
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Citations
41 Claims
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1. A device for actuating a syringe having a barrel for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel, the device comprising:
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grommet means for seating against the proximal end of the barrel around the outlet tip; plunger engagement means for engaging the actuation portion; and elastomeric actuation means for elastically connecting the grommet means and the plunger engagement means, so that when the grommet means is seated against the proximal end of the barrel and the plunger engagement means is engaging the actuation portion with the plunger in the withdrawn position, the plunger is biased toward the inserted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device for actuating a syringe having a barrel for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel, the actuation portion terminating in a flattened member having a peripheral edge, the device comprising:
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first means for seating against the proximal end of the barrel around the outlet tip; second means for receiving the actuation portion and seating against the flattened member; third means, within the second means, for releasably holding the peripheral edge of the flattened member; and elastomeric actuation means for elastically connecting the first means and the second means, so that when the first means is seated against the proximal end of the barrel and the second means is seated against the flattened member with the plunger in the withdrawn position, the plunger is biased toward the inserted position. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A device for actuating a syringe having a barrel for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel, the device comprising:
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an elastic strap having first and second end portions and an intermediate portion; plunger engagement means, attached to the intermediate portion of the strap, for engaging the actuation portion of the plunger; and grommet means for attaching the first and second end portions of the strap together, and for seating against the proximal end of the barrel around the outlet tip, so that when the grommet means is seated against the proximal end of the barrel and the plunger engagement means is engaging the actuation portion of the plunger with the plunger in the withdrawn position, the plunger is biased toward the inserted position, the grommet means comprising first and second grommet members that are removably attachable to each other and to the strap near the first and second end portions thereof. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A device for actuating a syringe having a barrel for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel, the device comprising:
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plunger engagement means for engaging the actuation portion of the plunger; grommet means for seating against the proximal end of the barrel around the outlet tip; and an elastic band secured between the grommet means and the plunger engagement means; whereby, when the grommet means is seated against the proximal end of the barrel and the plunger engagement means is engaging the actuation portion of the plunger with the plunger in the withdrawn position, the plunger is biased toward the inserted position by the elastic band. - View Dependent Claims (40, 41)
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Specification