WO1992018175A1 - Infuser - Google Patents

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
  • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
  • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
• • 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
  • A61M5/1413—Modular systems comprising interconnecting elements

Definitions

• the invention relates to pumps for current infusion of liquid, preferably insulin.
• liquid preferably insulin.
• a syringe, a pen, or a pump are used.
• the pump offers the possibility of a good controlling of the glucose concentration as it may simulate the course of the insulin production by a non- diabetic.
• the use of insulin pumps has been rather limited as pump treatment has been looked on as a strict treatment and as the pumps have been complex to operate.
• the basis for the invention is the wish of making it clear that an insulin pump allows a free life style with a good control of the glucose and may be very simple to use.
• the object of the invention is to provide an insulin pump which may be worn without dislike and which is extremely simple to operate.
• a pump according to claim 1 By integrating more disposable parts in a single unit the apparatus is made more simple to handle than known apparatus wherein a cartridge, an infusion line, and batteries for the pumping motor must be changed individually. From WO 85/00523 it is known to integrate the power source for the pump into a disposable part which further comprises an infusion line for insertion into a pump head to provide a peristaltic pump. This insertion complicates the mounting of the disposable part.
• the means for setting the controlling unit may comprise a socket with electric contacts, which socket is designed to receive and communicate with a plug having corresponding electric contacts and carrying a programmed ROM-circuit defining the infusion data.
• the plug may further carry a graphic representation of the infusion data stored in the ROM, i.e. how the infusion of a set 24-hours' dose is distributed over the 24 hours.
• This graphic representation may be marks on a transparent sheet so secured to the plug that it covers a watch dial display when the plug is inserted in the socket, the marks indicating periods with increased or decreased infusion.
• the disposable part may further comprise a memory keeping an account of the amount of liquid left in the reservoir.
• a memory keeping an account of the amount of liquid left in the reservoir.
• the durable part may comprise one or more of the elements: A controlling unit, a display, means for setting the controlling unit, a drive unit delivering mechanical energy for driving the pump mechanism and a long life electric cell energizing the controlling unit.
• the pumping mechanism may be a complete low cost pump, e.g. a piezoelectric membrane pump, which may be disposed of after use.
• the pump mechanism is only the part comprising a pumping chamber and valves, and this mechanism is driven by an electric motor which is integrated in the durable part.
• the controlling unit is energized by its own electric cell it is avoided that data stored in this unit are deleted during the change of the disposable part.
• the mounting may easily be made when the durable and the disposable parts in a complementary way fill the inner space of the housing whereby the disposable part is unambiguously secured in the housing.
• Fig. 1 shows the durable part of a pump according to the invention
• Fig.2 shows the disposable part of a pump according to the invention
• Fig.3 shows the disposable part of Fig.2 mounted in the durable part, which is shown with its lid open, and
• Fig. 4 shows an infusion data carrying plug with an attached information sheet.
• the infusion apparatus shown in Fig. 1 has a durable part forming a housing and comprising a bottom part 1 and a lid 2 hinged to this bottom part.
• a durable part forming a housing and comprising a bottom part 1 and a lid 2 hinged to this bottom part.
• an electronic compartment 3 comprising a controlling unit and a display 8.
• a disposable part 4 in the other end of the bottom part 1 space is left for receiving a disposable part 4 as shown in Fig. 2.
• This disposable part contains an insulin reservoir made inspectable through a window 5.
• the disposable part further contains a pump mechanism for delivering the insulin through an infusion line 6 to a needle
• the energy for the pump is supplied by a battery in the disposable part.
• This battery is designed with a capacity sufficient to energize the pump during the emptying of the insulin reservoir.
• the disposable part comprises a sensor placed at the inlet of the infusion line and designed to be coupled to a measuring device. As it appears, all parts which have to be changed frequently are integrated in the disposable part. The time for changing is defined by the draining of the insulin reservoir and it is automatically ensured that also the battery and the infusion line are changed. 5
• also members which are not normally changed so as the pump mechanism and the sensor are integrated in the disposable part.
• Fig. 3 shows a pump with the disposable part mounted in the bottom part.
• the lid 2 When a disposable part is mounted in the bottom part 1 of the housing, the lid 2 is closed and is kept closed by a locking mechanism.
• the lid 2 is provided with a window 9 which reveals the relevant part of the display when the lid s 2 is closed.
• FIG 1 another set of electric contacts are provided in a socket 12 mating a linear plug 3 as shown in Figure 3.
• a ROM circuit is provided, in which circuit information is stored defining how a set 24-hours * dose should be distributed taking into account that the need for insulin varies during a day and a o night depending on the patient's life style.
• This feature makes it easy for the patient to change the 24 hours' infusion profile in accordance with changes in life style, e.g. from working days to week-ends or holidays, just by inserting another plug 13 into the socket.
• Figure 4 shows such a plug 13 being provided with a transparent sheet which is attached to the plug 13 so that it covers the display 8 of the durable part of the pump when the plug 13 is inserted into the socket 12 of this durable part.
• the sheet 14 may carry information of the infusion profile obtained with the current plug.
• the sheet being transparent the information may be graphic and may be seen in connection with information shown on the display 8.
• the apparatus is described as a pump for infusing insulin, but may be used for other kinds of timed medication without deviating from the scope of the invention.

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)
• Fluid-Driven Valves (AREA)
• Eye Examination Apparatus (AREA)

Abstract

Description

Claims

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8096472

Family Applications (1)

Country Status (7)

Cited By (6)

Families Citing this family (49)

Citations (4)

• 1991
  • 1991-04-18 DK DK91694A patent/DK69491D0/en not_active Application Discontinuation
• 1992
  • 1992-04-14 WO PCT/DK1992/000125 patent/WO1992018175A1/en active IP Right Grant
  • 1992-04-14 DE DE69205680T patent/DE69205680T2/en not_active Expired - Lifetime
  • 1992-04-14 AU AU16823/92A patent/AU1682392A/en not_active Abandoned
  • 1992-04-14 EP EP92909898A patent/EP0580723B1/en not_active Expired - Lifetime
  • 1992-04-14 AT AT92909898T patent/ATE129412T1/en not_active IP Right Cessation
  • 1992-04-14 JP JP4508965A patent/JPH06506849A/en active Pending
  • 1992-04-14 DK DK92909898.6T patent/DK0580723T3/en active

Patent Citations (4)

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