US4710177A — Subcutaneous ventricular injection apparatus and …

Claim 1

Independent Claim 224 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located; a subcutaneous catheter means for connecting said reservoir and the body site, siad catheter means including an end located at the body site; a subcutaneous pump means located adjacent the body site and fluidly disposed between the end of said catheter means and said reservoir for pumping measured amounts of the fluid from said reservoir to the end of said catheter means, said pump means including a first depressible member which is manually depressed to pump the fluid; and a subcutaneous valve means located adjacent said pump means and fluidly disposed between the end of said catheter means and said reservoir for blocking the flow of fluid through said catheter means even when said first depressible member of said pump means is depressed, said valve means including a resilient biasing means for resiliently biasing said valve means to the closed position and a second depressible member physically separated from said first depressible member which is manually depressed to overcome said resilient biasing means and open said valve means such that the flow of fluid through said catheter means is only accomplished when said first depressible member and said second depressible member are depressed simultaneously.

Claim 2

Dependent Claim 224 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located; a subcutaneous catheter means for connecting said reservoir and the body site, siad catheter means including an end located at the body site; a subcutaneous pump means located adjacent the body site and fluidly disposed between the end of said catheter means and said reservoir for pumping measured amounts of the fluid from said reservoir to the end of said catheter means, said pump means including a first depressible member which is manually depressed to pump the fluid; and a subcutaneous valve means located adjacent said pump means and fluidly disposed between the end of said catheter means and said reservoir for blocking the flow of fluid through said catheter means even when said first depressible member of said pump means is depressed, said valve means including a resilient biasing means for resiliently biasing said valve means to the closed position and a second depressible member physically separated from said first depressible member which is manually depressed to overcome said resilient biasing means and open said valve means such that the flow of fluid through said catheter means is only accomplished when said first depressible member and said second depressible member are depressed simultaneously.

Claim 3

Dependent Claim 85 words

An injection system as claimed in claim 1 wherein said reservoir is refillable and includes: (a) an expandable bag, (b) a bubble member on an outermost surface of said bag which is palpable beneath the skin of the user, said bubble member having a front wall which is penetrable by a small needle and which reseals itself after such a penetration, and a back wall which is impenetrable to a small needle, and (c) a fluid passagewy provided between said bag and said bubble member.

Claim 4

Dependent Claim 75 words

An injection system as claimed in claim 1 wherein said pump means and said valve means are formed as a unit having an integral outer wall, said outer wall having a first flexible outer wall portion forming said second depressible member which is depressed by the user to open said valve means and a second flexible outer wall portion forming said first depressible member which is depressed by the user to operate said pump means.

Claim 5

Dependent Claim 58 words

An injection system as claimed in claim 3 wherein said valve means includes a resilient planar member having a central slit therein which is normally closed, and a cross member which extends laterally across said slit and which is moved into the plane of said planar member by movement of said first flexible portion to open said slit.

Claim 6

Dependent Claim 53 words

An injection system as claimed in claim 4 wherein said pump means includes a central chamber beneath said second flexible portion, an inlet containing a resiliently operated one-way valve means for admitting fluid into said chamber, and an outlet containing a resiliently operated one-way valve means for passing fluid out of said chamber.

Claim 7

Dependent Claim 43 words

An injection system as claimed in claim 5 wherein said unit includes a front portion containing said first flexible portion and said second flexible portion, and a back portion formed with a flat surface such that said unit is easily oriented during placement.

Claim 8

Dependent Claim 27 words

An injection system as claimed in claim 6 wherein said first flexible portion and said second flexible portion are recessed from the remainder of said front portion.

Claim 9

Dependent Claim 27 words

An injection system as claimed in claim 1 wherein said catheter means includes a tap reservoir located downstream of said pump means and of said valve means.

Claim 10

Dependent Claim 42 words

An injection system as claimed in claim 8 wherein said tap reservoir includes an outermost surface which is penetrable by a small needle and which reseals itself after such a penetration, and an innermost surface which is impenetrable to a small needle.

Claim 11

Dependent Claim 203 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a refillable reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located and including (a) an expandable bag, (b) a bubble member on an outermost surface of said bag which is palpable beneath the skin of the user, said bag having a front wall which is penetrable by a small needle and which reseals itself after such a penetration and a back wall which is impenetrable to a small needle, and (c) a fluid passageway provided between said bag and said bubble member; a subcutaneous catheter means for connecting said bag and the body site, said catheter means including an end at the body site; a subcutaneous pump means located adjacent the body site and fluidly disposed between the end of said catheter means and said reservoir for manually pumping measured amounts of the fluid from said reservoir to the end of said catheter means; and a valve means located adjacent said pump and fluidly disposed between the end of said catheter means and said bag for allowing the flow of fluid through said catheter means only when said valve means is manually opened.

Claim 12

Dependent Claim 203 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a refillable reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located and including (a) an expandable bag, (b) a bubble member on an outermost surface of said bag which is palpable beneath the skin of the user, said bag having a front wall which is penetrable by a small needle and which reseals itself after such a penetration and a back wall which is impenetrable to a small needle, and (c) a fluid passageway provided between said bag and said bubble member; a subcutaneous catheter means for connecting said bag and the body site, said catheter means including an end at the body site; a subcutaneous pump means located adjacent the body site and fluidly disposed between the end of said catheter means and said reservoir for manually pumping measured amounts of the fluid from said reservoir to the end of said catheter means; and a valve means located adjacent said pump and fluidly disposed between the end of said catheter means and said bag for allowing the flow of fluid through said catheter means only when said valve means is manually opened.

Claim 13

Dependent Claim 227 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located; a subcutaneous catheter means for connecting said reservoir and the body site, said catheter means including an end at the body site; and a subcutaneous unit fluidly disposed between said reservoir and the end of said catheter means and including (a) a pump means for manually pumping measured amounts of the fluid from said reservoir to the end of said catheter means, said pump means including a central chamber, an inlet containing a biased one-way valve means for admitting fluid into said chamber and an outlet containing a biased one-way valve means for passing fluid out of said chamber, (b) a biased valve means for allowing pumping of the fluid by said pumping means only when said valve means is manually held in the opened position, said valve means including a resilient planar member having a central slit therein which is normally closed and a cross member which extends laterally across said slit, (c) a first flexible portion which is depressed to push said cross member against said slit and thereby to open said slit, and (d) a second flexible portion which forms part of said central chamber and which is depressed to operate said pump means.

Claim 14

Dependent Claim 227 words

An injection system for delivering a fluid to a subcutaneous body site comprising: a reservoir containing a plurality of doses of the fluid, said reservoir adapted to be subcutaneously located; a subcutaneous catheter means for connecting said reservoir and the body site, said catheter means including an end at the body site; and a subcutaneous unit fluidly disposed between said reservoir and the end of said catheter means and including (a) a pump means for manually pumping measured amounts of the fluid from said reservoir to the end of said catheter means, said pump means including a central chamber, an inlet containing a biased one-way valve means for admitting fluid into said chamber and an outlet containing a biased one-way valve means for passing fluid out of said chamber, (b) a biased valve means for allowing pumping of the fluid by said pumping means only when said valve means is manually held in the opened position, said valve means including a resilient planar member having a central slit therein which is normally closed and a cross member which extends laterally across said slit, (c) a first flexible portion which is depressed to push said cross member against said slit and thereby to open said slit, and (d) a second flexible portion which forms part of said central chamber and which is depressed to operate said pump means.

Claim 15

Dependent Claim 39 words

An injection system as claimed in claim 11 wherein said first flexible portion and said second flexible portion are formed as recesses on an outermost side of said unit, and wherein an innermost side of said unit is flat.

Claim 16

Dependent Claim 60 words

An injection system a claimed in claim 11 wherein said catheter means includes a tap reservoir located downstream of said pump means and of said valve means, said tap reservoir including an outermost surface which is penetrable by a small needle and which reseals itself after such a penetration and an innermost surface which is impenetrable to a small needle.

Claim 17

Dependent Claim 85 words

An injection system as claimed in claim 13 wherein said reservoir is refillable and includes: (a) an expandable bag, (b) a bubble member on an outermost surface of said bag which is palpable beneath the skin of the user, said bubble member having a front wall which is penetrable by a small needle and which reseals itself after such a penetration, and a back wall which is impenetrable to a small needle, and (c) a fluid passageway provided between said bag and said bubble member.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1990-11-30	1991-06-01	1991-12-01	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1994-11-30	1995-06-01	1995-12-01	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1998-11-30	1999-06-01	1999-12-01	$7700.00	Window Closed / Lapsed

Subcutaneous ventricular injection apparatus and method

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