Syringe device with resistive ridges and methods of use
First Claim
1. A syringe device comprising:
- a hollow member having an inner wall,a sealing gasket disposed within said member,a plunger connected to said scaling gasket, said plunger implemented to produce movement of said sealing gasket within said member along a path defined by a first position and a second position, in a first direction and in a second direction,at least one ridge formed on said inner wall between said first position and said second position, each said at least one ridge providing a change in resistance to said movement of said sealing gasket along said path and said sealing gasket being configured to maintain a seal between said sealing gasket and said inner wall during said movement.
1 Assignment
0 Petitions
Accused Products
Abstract
A syringe device incorporating ridges that cause resistive changes to the movement of the syringe gasket or plunger, thereby providing user feedback as to the position and speed of plunger movement. Such user feedback may be useful in stressful situations, under poor lighting conditions or in other unfavorable circumstances. Additionally, in certain embodiments these ridges may aid in accurate dispension or allow the syringe to derive additional functionality, such as performing as a vacuum source. Ridges can be protrusions such as tabs, bubbles or continuous rings for single or repeated use or these ridges may be formed as indentations. Ridges may be formed in patterns, in various sizes and shapes or these ridges may be mixed and matched as required or desired. Ridges may also be formed from a soluble material and the resistive change may itself provide indication that the material has been substantially dissolved and dispensed. In some embodiments these ridges are formed primarily within the barrel portion of the syringe. In other embodiments these ridges may be formed on the plunger stem of the syringe. Ridges may be constructed to provide one type of resistive change during the aspiration stroke and a different resistive change to motion in the opposite direction.
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Citations
27 Claims
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1. A syringe device comprising:
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a hollow member having an inner wall, a sealing gasket disposed within said member, a plunger connected to said scaling gasket, said plunger implemented to produce movement of said sealing gasket within said member along a path defined by a first position and a second position, in a first direction and in a second direction, at least one ridge formed on said inner wall between said first position and said second position, each said at least one ridge providing a change in resistance to said movement of said sealing gasket along said path and said sealing gasket being configured to maintain a seal between said sealing gasket and said inner wall during said movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 26, 27)
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22. A syringe device comprising:
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a member defining a passageway through said member, said passageway having a first region and a second region, said first region having an inner diameter tapering from a first inner diameter at a first end distal to said second region to a second inner diameter at a second end proximal to said second region; said second region having said second inner diameter throughout; a sealing gasket disposed within said cylindrical member; and a plunger to cause a movement of said gasket within said passageway in a first direction and in a second direction; said gasket maintaining a seal between said gasket and said passageway during said movement; and a resistance to said movement is constant in said second region and is variable in said first region. - View Dependent Claims (23, 24, 25)
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Specification