Methodology for drug delivery device with sliding valve
First Claim
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1. A drug delivery device, which comprises:
- (a.) a main housing having a shaft with a proximal end and a distal end, having a drug holding reservoir within said shaft, and having a drug release conduit located in said shaft toward said distal end, and having an outlet located at said distal end of said shaft;
(b.) a drug vial receiving member adapted to receive, hold and pierce a drug vial, said member having a hollow vial piercing element connected to an inlet conduit;
(c.) said inlet conduit connected to said shaft at said holding reservoir;
(d.) a one-way valve located within said inlet conduit between said piercing element and said holding reservoir positioned to permit flow from said drug vial receiving member to said holding reservoir and not the opposite;
(e.) a slide valve having a distal end and a proximal end, and being located in said shaft and adapted for movement within said shaft from a first position to a second position and vice versa, wherein when said slide valve is in said first position, said drug holding reservoir is closed from said drug release conduit, and when said slide valve is in said second position, said drug release conduit is open to permit liquid drug to pass through said slide valve from said drug holding reservoir, said slide valve having a first wall facing toward said holding reservoir and an opposing second wall facing away from said holding reservoir, and said first wall has a liquid inlet channel connecting to said side wall and said second wall has a liquid outlet channel are in proximity to one another and not directly connected to one another;
(f.) a needle functionally connected to said valve outlet at its distal end to said slide valve;
(g.) a plunger being partially and slideably located in said proximal end of said shaft, said plunger having sufficient length to be moved from a first plunger position to a second plunger position, and vice versa;
(h.) a spring located in said shaft at said distal end of said slide valve biasing said slide valve to its first position;
wherein, when said drug vial receiving member is loaded with a piercable liquid drug vial and said plunger is moved from said first position to said second position, said liquid drug will be drained from said vial through said one-way valve and through said inlet conduit into said drug holding reservoir, and when said plunger is moved from its second position toward its first position, said first spring will compress and said slide valve will move from its closed, first position to its open, second position in alignment with said drug release conduit, and when said plunger is moved from its second position to its third position, said first spring remains compressed and said second spring will compress and said side arm of said plunger will advance said rod and said piston to move drug through said drug outlet conduit, through said valve and through said needle for injection thereof.
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Accused Products
Abstract
Drug delivery devices adapted to receive liquid medication vials to fill a reservoir, utilize sliding through valves that are closed except when driven by force of liquid medication pushed by a plunger to an open position to feed the medication via needle to a patient or via a connection to an IV port. The devices have multiple seals and automatically close up when pressure on the plunger is released. The methodology is also included.
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Citations
30 Claims
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1. A drug delivery device, which comprises:
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(a.) a main housing having a shaft with a proximal end and a distal end, having a drug holding reservoir within said shaft, and having a drug release conduit located in said shaft toward said distal end, and having an outlet located at said distal end of said shaft; (b.) a drug vial receiving member adapted to receive, hold and pierce a drug vial, said member having a hollow vial piercing element connected to an inlet conduit; (c.) said inlet conduit connected to said shaft at said holding reservoir; (d.) a one-way valve located within said inlet conduit between said piercing element and said holding reservoir positioned to permit flow from said drug vial receiving member to said holding reservoir and not the opposite; (e.) a slide valve having a distal end and a proximal end, and being located in said shaft and adapted for movement within said shaft from a first position to a second position and vice versa, wherein when said slide valve is in said first position, said drug holding reservoir is closed from said drug release conduit, and when said slide valve is in said second position, said drug release conduit is open to permit liquid drug to pass through said slide valve from said drug holding reservoir, said slide valve having a first wall facing toward said holding reservoir and an opposing second wall facing away from said holding reservoir, and said first wall has a liquid inlet channel connecting to said side wall and said second wall has a liquid outlet channel are in proximity to one another and not directly connected to one another; (f.) a needle functionally connected to said valve outlet at its distal end to said slide valve; (g.) a plunger being partially and slideably located in said proximal end of said shaft, said plunger having sufficient length to be moved from a first plunger position to a second plunger position, and vice versa; (h.) a spring located in said shaft at said distal end of said slide valve biasing said slide valve to its first position; wherein, when said drug vial receiving member is loaded with a piercable liquid drug vial and said plunger is moved from said first position to said second position, said liquid drug will be drained from said vial through said one-way valve and through said inlet conduit into said drug holding reservoir, and when said plunger is moved from its second position toward its first position, said first spring will compress and said slide valve will move from its closed, first position to its open, second position in alignment with said drug release conduit, and when said plunger is moved from its second position to its third position, said first spring remains compressed and said second spring will compress and said side arm of said plunger will advance said rod and said piston to move drug through said drug outlet conduit, through said valve and through said needle for injection thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 24, 25)
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11. A drug delivery device, which comprises:
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(a.) a main housing having a shaft with a proximal end and a distal end, having a drug holding reservoir within said shaft, and having a drug release conduit located in said shaft toward said distal end, and having an outlet located at said distal end of said shaft; (b.) a drug vial receiving member adapted to receive, hold and pierce a drug vial, said member having a hollow vial piercing element connected to an inlet conduit; (c.) said inlet conduit connected to said shaft at said holding reservoir; (d.) a one-way valve located within said inlet conduit between said piercing element and said holding reservoir positioned to permit flow from said drug vial receiving member to said holding reservoir and not the opposite; (e.) a slide valve having a distal end and a proximal end, and being located in said shaft and adapted for movement within said shaft from a first position to a second position and vice versa, wherein when said slide valve is in said first position, said drug holding reservoir is closed from said drug release conduit, and when said slide valve is in said second position, said drug release conduit is open to permit liquid drug to pass through said slide valve from said drug holding reservoir, said slide valve having a first wall facing toward said holding reservoir and an opposing second wall facing away from said holding reservoir, and said first wall has a liquid inlet channel connecting to said side wall and said second wall has a liquid outlet channel are in proximity to one another and not directly connected to one another; (f.) a needle functionally connected to said valve outlet at its distal end to said slide valve; (g.) a plunger being partially and slideably located in said proximal end of said shaft, said plunger having sufficient length to be moved from a first plunger position to a second plunger position, and vice versa; (h.) a spring located in said shaft at said distal end of said slide valve biasing said slide valve to its first position; wherein, when said drug vial receiving member is loaded with a piercable liquid drug vial and said plunger is moved from said first position to said second position, said liquid drug will be drained from said vial through said one-way valve and through said inlet conduit into said drug holding reservoir, and when said plunger is moved from its second position toward its first position, said first spring will compress and said slide valve will move from its closed, first position to its open, second position in alignment with said drug release conduit, and when said plunger is moved from its second position to its third position, said first spring remains compressed and said second spring will compress and said side arm of said plunger will advance said rod and said piston to move drug through said drug outlet conduit, through said valve and through said needle for injection thereof. - View Dependent Claims (22, 23, 26, 27, 28, 29, 30)
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21. A methodology for drug delivery utilizing a manual drug delivery device, which comprises the steps of
A.) loading a drug holding reservoir of a manual drug delivery device with a predetermined amount of a liquid drug and sealing said liquid drug in said drug holding reservoir, said manual drug delivery device including the following structure: -
(i) a main housing having a shaft with a proximal end and a distal end, and having said drug holding reservoir separate from said shaft, and having a drug outlet conduit connected from said drug holding reservoir to said shaft; (ii) fill means on said main housing for loading a drug into said drug holding reservoir, said fill means including opening and closing means; (iii) a piston with a drive rod, said piston being slideably located within said reservoir; (iv) a slide valve having a distal end and a proximal end, and being located in said shaft and adapted for movement within said shaft from a first position to a second position and vice versa, wherein when said slide valve is in said first position, said drug outlet conduit is closed from said shaft, and when said slide valve is in said second position, said drug outlet conduit is open to permit liquid drug to pass through said slide valve; (v) a needle functionally connected at its distal end to said slide valve; (vi) a plunger having a side arm, said plunger being partially and slideably located in said proximal end of said shaft, said side arm being in alignment with said rod, said plunger having sufficient length to be moved from a first plunger position, being a rest position, to a second plunger position, being a slide valve open position, and from said second position to a third position, being an injection position; (vii) a first spring located in said shaft at said distal end of said slide valve, and a second spring located in said shaft at said proximal end of said slide valve between said plunger and said slide valve, said first spring being weaker than said second spring so as to yield and compress fully before said second spring compresses; B.) positioning said device adjacent a drug injection receiver; C.) moving said plunger into said shaft from said first position to said second position, so as to compress said first spring and so as to move said slide valve from its closed, first position to its open, second position in alignment with said drug outlet conduit; D.) moving said plunger from its second position to its third position, while said first spring remains compressed, and so as to compress said second spring and advance said side arm of said plunger to act upon said rod and said piston to move said drug through said drug outlet conduit, through said valve and through said needle to inject said drug into said injection receiver.
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Specification