Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/142—Pressure infusion, e.g. using pumps
  • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/1414—Hanging-up devices
  • A61M5/1415—Stands, brackets or the like for supporting infusion accessories
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/1414—Hanging-up devices
  • A61M5/1415—Stands, brackets or the like for supporting infusion accessories
  • A61M2005/1416—Stands, brackets or the like for supporting infusion accessories placed on the body of the patient

Definitions

• the present invention relates to the medical field of ambulatory drug infusion and, more particularly, to drug delivery systems where fluid delivery rate is dependent to some degree on drug viscosity.
• the dextrose solution with the added medicament is delivered by way of administration tubing to the venous system of a patient.
• Pumps have been developed to more accurately deliver the solution through the administration tubing.
• One such pump is a peristaltic- type pump sold by Travenol Laboratories, Inc. of Deerfield, Illinois, Product Code No. 2M8015. Certain elements of that pump are disclosed in U S. Patent No. 4,155,362. Pumps such as these make possible the delivery of paren- teral solution at highly constant flow rates.
• One such pump or infusion device employs a bladder of unique construction to hold the liquid drug to be infused.
• the bladder in combination with a metering system, delivers an extremely small volume of solution into, a patient's bloodstream over a period as long as twenty-four hours, such delivery being at a highly con ⁇ stant fluid flow rate.
• a bladder is disclosed in U.S. Patent No. 4,201,207.
• the bladder eliminates the need for a motor or external power source such as a battery because the bladder is pressurized by the liquid drug- to be infused.
• the infusion device meets the desirable parameter of constant flow rate over relatively lengthy- time periods and forms a system of simple construction which is both small and light weight, making it excellent as an ambulatory drug supply.
• solu- tion delivery rate of such an infusion device may be made substantially constant under laboratory conditions, when the device is placed in a substantially uncontrolled environment the fluid flow rate is not nearly as constant over time.
• in ⁇ fusion rate can be abnormally affected by the viscosity of the solution to be infused, in comparison with, for example, a solution container used in combination with a motorized pump wherein solution viscosity has a minimal effect on flow rate.
• solution viscosity simply does not have more than a negligible effect on flow rate.
• ambulatory infusion device even a small change in viscosity may significantly affect flow rate, particularly where the volume to be infused is small, perhaps less than 25 ml, and the infusion time period is high, typically as high as twenty-four hours.
• liquid discharge from a pipe is dependent upon the diameter of the pipe, the length of the pipe, the pressure drop along the length of the pipe and the viscosity of the liquid.
• the only one of these factors which is not known is liquid viscosity.
• Liquid viscosity is a func ⁇ tion of temperature, so therefore temperature control is important for the control of the discharge, i.e., the fluid delivery rate.
• the apparatus includes body attachment means permitting the person to be ambula ⁇ tory and fastening means secured to and extending from a portion of the body attachment means to secure the drug supply container, retaining the liquid drug supply in a position in close proximity to the skin, thereby utilizing the body heat generated by the person so as to minimize temperature change to the drug supply.
• a harness designed to be worn by a human being retaining a liquid drug supply container while permitting the person to be ambulatory during drug in ⁇ fusion
• the harness includes a horizontal strap extending around the back and frontside of a person's tor ⁇ so, support straps attached to and extending between the back and frontsides of the horizontal strap to secure the harness over a person's shoulders, and fastening means secured to the frontside of the horizontal strap for re ⁇ taining the drug supply container in a predetermined posi ⁇ tion.
• the fastening means may include two closed loops of elastic material in which the drug supply container can be retained.
• the harness is designed to keep the drug supply container in close proximity to the skin, thereby permitting heat transfer from the person to the drug sup ⁇ ply.
• drug delivery rate for certain infusion devices will be less susceptible to temperature change due to changes in atmospheric temperature.
• the two support straps converge at and are fastened to a point substantially in the middle of the frontside of the horizontal strap and the support straps are adjustable.
• the fastening strips or loops extending from the frontside can be designed to retain the container on top of the horizontal strap or below it.
• the harness enables a patient to be ambulatory during drug infusion and.enables a pressurized infusion device to perform more accurately.
• the harness is designed to be worn under standard clothing otherwise worn about the torso such as a shirt. It does not inter ⁇ fere with undergarments, such as a bra.
• Figure 1 is a perspective view of the harness of the invention as worn over a bra and retaining a drug supply container connected by administration tubing to an injection site.
• FIG 2 is a perspective view of the harness with a drug supply container therein, as worn underneath standard unmodified apparel.
• Figure 3 is a fragmentary, front elevational view of a modified harness.
• Figure 4 is a perspective view of the harness.
• FIG. 4 shows a harness 10 in accordance with the present invention, able to serve as means for minimizing the temperature range of a liquid drug supply carried by the harness 10.
• the harness 10 includes a horizontal strap 12, including a frontside 14 and backside 16.
• the horizontal strap 12 is preferably flexible and elastic.
• Latch 18 and hook 20 of known construction are disposed in the middle of the backside 16 at first and second ends 22, 24, respectively, of the horizontal strap 12.
• Two flexible support straps 26, 28 are fastened at their first ends 30, 32 by known means such as stitching 34 to the backside 16 of the horizontal strap 12. First ends 30, 32 are spaced apart along the backside 16.
• the support straps 26, 28 extend upwardly from first ends 30, 32 and converge at their second ends 36, 38. Second ends 36, 38 are fastened substantially at the mid ⁇ point 40 of the frontside 14, again by known means such as stitching 34.
• Length adjusting means are disposed along the support straps 26, 28 near the second ends 36, 38 thereof.
• the length adjusting means may include buckles 42 through which the support straps may be threaded.
• Fastening means for the infusion device or other drug container are provided by unitary, elastic, fasten ⁇ ing strips 44, 46 a portion of which is fastened to said frontside 14 by means such as stitching.
• the fastening strips 44, 46 form closed loops which may be disposed substantially coaxially, the axis extending parallel to the length of the frontside 14.
• FIG 2 there is shown the above- described harness 10 as worn about a male torso 48.
• Support straps 26, 28 are spaced at their first ends 30, 32 along the backside 16, permitting support straps 26, 28 to be worn about the shoulders 52, 54.
• An infusion device or other liquid supply container 56 is inserted through the fastening strips 44, 46.
• liquid supply container 56 is an infusion device having a pressurized bladder 58 with the liquid drug supply therein. It should be understood, however, that other liquid supply containers which operate under differ ⁇ ent principles may be retained by the harness 10.
• Administration tubing 60 or other conduit extends from an outlet port 62 in the liquid supply container 56 to an injection site 64 shown here in the arm 66 of the patient.
• a catheter 68 communicates between the administration tubing 60 and the venous system of the patient at the injection site 64.
• Administration tubing 60 is retained in place and close to the body by means of a band 70 and/or tape 72.
• the tubing 60 may extend up ⁇ wardly from the outlet 62 and may be wrapped around one of the shoulder straps 26, 28 to position the tubing for extending down the arm 66 of the patient.
• the harness 10 maintains the supply container 56 adjacent to the horizontal strap 12 in a position on the torso so as not to inhibit patient movement and at the same time to be in a position in close proximity to the skin to permit heat transfer, thereby limiting the temperature range of the drug supply which would other ⁇ wise be totally subject to atmospheric temperature changes.
• the patient can be ambulatory and per ⁇ form most activities while permitting an extremely low volume of liquid drug to be infused over a fairly lengthy period of time, such as a twenty-four hour period, thereby reducing harmful side effects and increasing the beneficial value of the infused drug which may commonly be, for example, heparin in dextrose solution, insulin, or chemotherapy drugs.
• the harness of the present invention stabilizes the liquid drug temperature and thus the drug viscosity in the supply container 56.
• the administration tubing 60 preferably has a small lu ⁇ men so that the volume of liquid in the tubing and the time period over which a particular volume of liquid remains therein is small.
• the harness facilitates wearing the tubing 60 adjacent the skin.
• a shirt 74 shown in phantom in Figure 2, or other normal, unaltered wearing apparel may be worn over the harness with the supply container therein.
• the support straps 26, 28 converge at a point above the supply container 56 so as to prevent sagging of the frontside 14 with the infusion device thereon.
• the buckles 42 or other length adjusting means are placed near the second ends 36, 38 to facilitate easy adjustment by the wearer.
• the second ends 36, 38 of the support straps 26, 28 may of course be spaced apart on frontside 14 while still supporting the in ⁇ fusion device; however, as seen in Figure 1, the con ⁇ verging support straps 26, 28 facilitate wear about the torso 76 of a female.
• support straps 26, 28 extend between cups 80, 82 of bra 84.
• Such a harness construc ⁇ tion enables wear in conjunction with undergarments in an inconspicuous manner.
• Figure 3 shows a modified embodiment of the inven- tion wherein fastening strips 44', 46' are fastened to the frontside 14 of the horizontal strap 12 in a manner such that the liquid supply container 56 is retained about a torso 48, 76 below the horizontal strap 12, which may further facilitate heat transfer from the body, although such a construction may allow for some unwanted move ⁇ ment of the container 56.
• Another embodiment of the in ⁇ vention includes placement of the fastening means on the body attachment means at a location other than the front- side 14 of the horizontal strap 12, such as at, but not limited to, the backside 16 near the frontside 14 (not shown) .

Landscapes

• Health & Medical Sciences (AREA)
• Vascular Medicine (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Medical Preparation Storing Or Oral Administration Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=23051202

Family Applications (1)

Country Status (3)

Families Citing this family (11)

Citations (1)

Family Cites Families (4)

• 1982
  • 1982-05-17 EP EP19820902110 patent/EP0081561A4/de not_active Withdrawn
  • 1982-05-17 WO PCT/US1982/000679 patent/WO1982004399A1/en not_active Application Discontinuation
• 1983
  • 1983-02-14 NO NO830478A patent/NO830478L/no unknown

Patent Citations (1)

Also Published As

Similar Documents

Legal Events