Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2001-02-02
2003-05-13
Derakshani, Philippe (Department: 3754)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S067000, C604S132000
Reexamination Certificate
active
06562000
ABSTRACT:
BACKGROUND OF THE INVENTION
This disclosure relates to a medical device and more particularly to a therapeutic substance delivery device.
The medical device industry produces a wide variety of electronic and mechanical devices for treating patient medical conditions. Depending upon medical condition, medical devices can surgically implanted or connected externally to the patient receiving treatment. Clinicians use medical devices alone or in combination with therapeutic substance therapies and surgery to treat patient medical conditions. For some medical conditions, medical devices provide the best, and sometimes the only, therapy to restore an individual to a more healthful condition and a fuller life. One type of medical device is therapeutic substance delivery device.
Therapeutic substance delivery devices are also known as drug pumps and drug delivery devices. Therapeutic substance delivery devices are typically used to treat a condition that responds to a therapeutic substance delivered directly to an infusion site in the body rather than being ingested. Therapeutic substance delivery devices are used to treat conditions such as pain, spasticity, cancer, infections, gene abnormalities, and the like. Therapeutic substance delivery devices can be external to a patient with an infusion catheter inserted into the patient to deliver the therapeutic substance to an infusion site. Therapeutic substance delivery devices can also be implanted typically subcutaneously into a patient typically with a catheter that is also implanted to deliver therapeutic substance to an infusion site. Some therapeutic substance delivery devices are refillable such as the SynchroMed® Infusion System available from Medtronic, Inc. Other therapeutic substance delivery devices are intended as single-use devices.
Single-use therapeutic substance delivery devices are typically used in therapies where it is desirable to use a small device, an inexpensive device, or both. Single-use devices are typically configured with a preset infusion rate such as an osmotic pump available from DURECT Corp. as shown in their brochure titled “ALZETS® Osmotic Pumps, A General Description.” Other single-use therapeutic substance delivery devices use the collapsing reservoir alone to control the device infusion rate such as disclosed in U.S. Pat. No. 5,368,588 “Parenteral Fluid Medication Reservoir Pump” by Bettinger (Nov. 29, 1994).
For the foregoing reasons, there is a need for a single-use therapeutic substance delivery device that has a variable infusion rate control and a shrink-polymer therapeutic substance delivery device with an infusion control to provide single-use therapeutic substance delivery devices that are versatile, small, inexpensive, and have many other improvements.
SUMMARY OF THE INVENTION
A single-use therapeutic substance delivery device with infusion rate control is versatile, small, inexpensive, and has many other improvements. The therapeutic substance delivery device has a Micro Electro Mechanical System (MEMS) flow restriction with a variable infusion rate. The MEMS flow restriction is fluidly coupled to a reservoir outlet to receive therapeutic substance dispensed from the single-use reservoir at the reservoir rate and restrict the therapeutic substance flow to a desired infusion rate. The single-use reservoir is configured for controlled collapsing to dispense therapeutic substance from the reservoir at a reservoir rate through a reservoir outlet. Many embodiments of the single-use therapeutic substance delivery device with infusion rate control and its methods of operation are possible.
A single-use shrink-polymer therapeutic substance delivery device is versatile, small, inexpensive, and has many other improvements. A flow restriction is fluidly coupled to the shrink polymer reservoir outlet to receive therapeutic substance dispensed from the reservoir at the reservoir rate and restrict the therapeutic substance flow to an infusion rate. The shrink polymer reservoir configured for controlled collapsing to dispense therapeutic substance from the reservoir at a reservoir rate through a reservoir outlet. Many embodiments of the single-use shrink-polymer therapeutic substance delivery device with infusion rate control and its methods of operation are possible.
REFERENCES:
patent: 4447224 (1984-05-01), DeCant, Jr. et al.
patent: 4525165 (1985-06-01), Fischell
patent: 4772263 (1988-09-01), Dorman et al.
patent: 4871351 (1989-10-01), Feingold
patent: 4931050 (1990-06-01), Idriss
patent: 5045064 (1991-09-01), Idriss
patent: 5061243 (1991-10-01), Winchell et al.
patent: 5163920 (1992-11-01), Olive
patent: 5188260 (1993-02-01), Bettinger
patent: 5252962 (1993-10-01), Urbas et al.
patent: 5368588 (1994-11-01), Bettinger
patent: 5423334 (1995-06-01), Jordan
patent: 5427585 (1995-06-01), Bettinger
patent: 5448110 (1995-09-01), Tuttle et al.
patent: 5457447 (1995-10-01), Ghaem et al.
patent: 5474527 (1995-12-01), Bettinger
patent: 5552197 (1996-09-01), Bettinger
patent: 5616127 (1997-04-01), Smith
patent: 5702618 (1997-12-01), Saaski et al.
patent: 5797898 (1998-08-01), Santini, Jr. et al.
patent: 5820589 (1998-10-01), Torgerson et al.
patent: 5833603 (1998-11-01), Kovacs et al.
patent: 5897530 (1999-04-01), Jackson
patent: 5944717 (1999-08-01), Lee et al.
patent: 6183441 (2001-02-01), Kriesel et al.
patent: 6197013 (2001-06-01), Reed et al.
patent: 0 300 552 (1989-01-01), None
patent: 0 344 895 (1989-12-01), None
patent: 0 564 321 (1993-03-01), None
patent: 0 892 419 (1999-01-01), None
patent: 0 951 916 (1999-10-01), None
patent: 05220222 (1993-08-01), None
patent: WO 98/23869 (1998-06-01), None
“microID™ 125 KhZ rfid system Design Guide”,Microchip Technology Inc.,pp. 1-46, (Dec. 1998).
“Introducing The Microstamp Engine™”,Micron Communications Inc. 2 pgs., (1997).
“High Reliability Long-Term Lubricators Based On Heat-Shrink Polymers”,The Technology Partnership,2 pgs., (Sep. 1994).
“Controlled Stepwise Motion in Polysilicon Microstructures”,Journal of Microelectromechnical Systems,vol. 2, No. 3, pp. 106-110 (Sep. 1993).
“Digital RF/ID Enhances GPS”,Micron Communications, Inc.,pp. 406-411 (Date Unknown).
“ALZET® osmotic Pumps, A General Description”, pp. 2-5 (Date Unknown).
Heruth Kenneth T.
Larson Lary R.
Mattes Michael F.
Thompson David L.
Bauer Stephen W.
Berry Thomas G.
Derakshani Philippe
Medtronic Inc.
Waldkoetter Eric R.
LandOfFree
Single-use therapeutic substance delivery device with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single-use therapeutic substance delivery device with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-use therapeutic substance delivery device with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3007546