1. A fluid delivery system, comprising:
a reservoir having an inlet for receiving a gas to pressurize the reservoir and an outlet for dispensing fluid contained in the reservoir;
a first flow control device connected to the reservoir inlet;
a first pressure transmitter connected to the reservoir inlet, the first pressure transmitter providing an output signal;
a second flow control device in fluid communication with the reservoir outlet to control fluid flow out of the reservoir;
a second pressure transmitter connected to the reservoir outlet, the second pressure transmitter providing an output signal;
a Coriolis mass flowmeter in fluid communication with the second flow control device, the Coriolis flowmeter having a flow-tube made of a high-purity plastic material, the Coriolis flowmeter providing an output signal;
a controller receiving a setpoint signal, the controller receiving the output signals from the first and second pressure transmitters and the Coriolis flowmeter and providing control output signals to the first and second flow control devices to vary the pressure of the reservoir and the flow rate of fluid from the reservoir.
2. The fluid delivery system of claim 1, wherein the high-purity plastic material comprises PFA.
3. The fluid delivery system of claim 1, wherein the second flow control device comprises a valve.
4. The fluid delivery system of claim 3, wherein the valve comprises a pinch valve.
5. The fluid delivery system of claim 4, wherein the pinch valve comprises:
an actuator having a ram operatively connected thereto;
a reference surface positioned generally opposite the ram;
a high purity, flexible tube positioned between the ram and the reference surface.
6. The fluid delivery system of claim 5, wherein the actuator comprises a solenoid.
7. The fluid delivery system of claim 5, wherein the actuator comprises a stepper motor.
8. The fluid delivery system of claim 1, wherein the second flow control device comprises a pump having a variable output.
9. The fluid delivery system of claim 8, wherein the pump comprises a peristaltic pump.
10. The fluid delivery system of claim 1, wherein the reservoir includes a bag situated therein for containing a fluid.
11. The fluid delivery system of claim 1, wherein the controller comprises a PID controller.
12. The fluid delivery system of claim 1, wherein the output signal provided by the Coriolis mass flowmeter includes a mass flowrate measurement.
13. The fluid delivery system of claim 1, wherein the output signal provided by the Coriolis mass flowmeter includes a fluid density measurement.
14. The fluid delivery system of claim 1, wherein the output signal provided by the Coriolis mass flowmeter includes a fluid temperature measurement.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A composition comprising an absorbable copolyester comprising the reaction product of a polycondensation polyester and at least one lactone monomer,
wherein the polycondensation polyester comprises the reaction product of diglycolic acid andor a derivative thereof and diethylene glycol;
the copolyester comprises about 30 to 50% by weight of the polycondensation polyester based on the total weight of the copolyester; and the copolyester has a crystallinity ranging from about 20 to 40%
2. The composition according to claim 1, wherein the at least one lactone monomer is glycolide.
3. The composition according to claim 1, wherein the copolyester comprises the reaction product of a polycondensation polyester, at least 75 mole percent glycolide based on the total moles of lactone, and a lactone selected from the group consisting of lactide (l, d, dl, meso), p-dioxanone, trimethylene carbonate, epsilon-caprolactone, delta-valerolactone, beta-butyrolactone, epsilon-decalactone, 2,5-diketomorpholine, pivalolactone, alpha,alpha-diethylpropiolactone, ethylene carbonate, ethylene oxalate, 3-methyl-1,4-dioxane-2,5-dione, 3,3-diethyl-1,4-dioxan-2,5-dione, gamma-butyrolactone, 1,4-dioxepan-2-one, 1,5-dioxepan-2, -one, 1,4-dioxan-2-one, 6,8-dioxabicycloctane-7-one, and combinations thereof.
4. The composition according to claim 1, wherein the polycondensation polyester comprises the reaction product of diglycolic acid andor a derivative thereof, up to about 25 mole percent of an aliphatic diacid based on the total moles of acid, and diethylene glycol.
5. The composition according to claim 1, wherein the weight average molecular weight of the copolyester is from about 40,000 to about 100,000 gmol.
6. The composition according to claim 1, wherein weight average molecular weight of the copolyester is from about 50,000 to about 80,000 gmol.
7. The composition according to claim 1, wherein weight average molecular weight of the copolyester is about 60,000 to about 80,000 gmol.
8. The composition according to claim 1, wherein weight average molecular weight of the polycondensation polymer is from about 20,000 to about 50,000 gmol.
9. The composition according to claim 1, wherein weight average molecular weight of the polycondensation polymer is from about 30,000 to about 50,000 gmol.
10. The composition according to claim 1, wherein weight average molecular weight of the polycondensation polymer is about 40,000 gmol.
11. A surgical suture or mesh comprising an absorbable copolyester that is the reaction product of a polycondensation polyester and at least one lactone monomer, wherein the polycondensation polyester comprises the reaction product of diglycolic acid andor a derivative thereof and diethylene glycol; the copolyester comprises about 30 to 50% by weight of the polycondensation polyester based on the total weight of the copolyester; the copolyester has a crystallinity ranging from about 20 to 40%; and the weight average molecular weight of the copolyester ranges from about 40,000 to about 100,000 gmol.