CA1137374A - Portable insulin reservoir - Google Patents
Portable insulin reservoirInfo
- Publication number
- CA1137374A CA1137374A CA000304111A CA304111A CA1137374A CA 1137374 A CA1137374 A CA 1137374A CA 000304111 A CA000304111 A CA 000304111A CA 304111 A CA304111 A CA 304111A CA 1137374 A CA1137374 A CA 1137374A
- Authority
- CA
- Canada
- Prior art keywords
- channel portion
- walls
- reservoir
- inlet
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
- A61J1/10—Bag-type containers
Landscapes
- Health & Medical Sciences (AREA)
- Hematology (AREA)
- Pharmacology & Pharmacy (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)
Abstract
ABSTRACT OF THE DISCLOSURE
A reservoir for containing liquid medicaments is disclosed. The reservoir includes a relatively stiff elon-gate channel portion which has an inlet at one end and outlet at the opposite end and which is open at one side. The channel portion defines a side of the reservoir. A pair of walls are integrally coupled to the channel portion and extend away from said portion in generally parallel rela-tionship with the open side of the channel portion between the walls. The walls are sealed together around peripheral regions thereof and define with the channel portion a liquid-tight internal space which communicates with the inlet and outlet. The walls are resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet, and collapsing inwardly towards one another from said peripheral regions towards said channel portion as medicament is withdrawn through the outlet.
A reservoir for containing liquid medicaments is disclosed. The reservoir includes a relatively stiff elon-gate channel portion which has an inlet at one end and outlet at the opposite end and which is open at one side. The channel portion defines a side of the reservoir. A pair of walls are integrally coupled to the channel portion and extend away from said portion in generally parallel rela-tionship with the open side of the channel portion between the walls. The walls are sealed together around peripheral regions thereof and define with the channel portion a liquid-tight internal space which communicates with the inlet and outlet. The walls are resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet, and collapsing inwardly towards one another from said peripheral regions towards said channel portion as medicament is withdrawn through the outlet.
Description
~.~.37374 This invention relates to reservoirs for containing liquids and more particularly to reservoirs suitable for use by patients who require a portable supply of a liquid medicament.
The present invention is designed primarily for use with portable insulin supply systems which are being developed in many different forms. All however are directed towards using a sophisticated control system which effectively monitors a patient's needs for insulin and administers the required insulin in liquid form from a reservoir carried by the patient. The reservoir of the present invention could of course be used wherever a similar method is used to supply a liquid medicament, for instance in administering some chemotherapy medicaments.
Design requirements dictate that containers for these purposes be light, simple to ma~e, slim so that they are unobtrusive under a user's clothing, and above all resistant to breakage and occlusion both of which occurances would result in discontinuity in the flow o~ the liquid to the patient. The present invention is directed to providing a reservoir which satisfies these design requirements.
According to the invention there is provided a reser-voir for containing liquid medicaments. The reservoir in-cludes a relatively stiff elongate channel portion which has an inlet at one end and outlet at the opposite end and which is open at one side. The channel portion defines a side of the reservoir. A pair of walls are integrally coupled to the channel portion and extend away from said portion in generally parallel relationship with the open side of the channel portion between the walls. The walls are sealed to-gether around peripheral regions thereof and define with the cha~nel portion a liquid-tight internal space which communi-
The present invention is designed primarily for use with portable insulin supply systems which are being developed in many different forms. All however are directed towards using a sophisticated control system which effectively monitors a patient's needs for insulin and administers the required insulin in liquid form from a reservoir carried by the patient. The reservoir of the present invention could of course be used wherever a similar method is used to supply a liquid medicament, for instance in administering some chemotherapy medicaments.
Design requirements dictate that containers for these purposes be light, simple to ma~e, slim so that they are unobtrusive under a user's clothing, and above all resistant to breakage and occlusion both of which occurances would result in discontinuity in the flow o~ the liquid to the patient. The present invention is directed to providing a reservoir which satisfies these design requirements.
According to the invention there is provided a reser-voir for containing liquid medicaments. The reservoir in-cludes a relatively stiff elongate channel portion which has an inlet at one end and outlet at the opposite end and which is open at one side. The channel portion defines a side of the reservoir. A pair of walls are integrally coupled to the channel portion and extend away from said portion in generally parallel relationship with the open side of the channel portion between the walls. The walls are sealed to-gether around peripheral regions thereof and define with the cha~nel portion a liquid-tight internal space which communi-
- 2 , ~
~ 11373~4 cates with the inlet and outlet. The walls are resiliently flexible so as to be capable of bulging outwardly to accom-modate liquid entering through the inle`t, and collapsing inwardly towards one another from said peripheral regions towards said channel portion as medicament is withdrawn through the outlet.
The invention will be better understood with ~eference to the drawings, in which:
Fig. 1 is a perspective view, part of which is broken away, illustrating a preferred embodiment of a reservoir according to the invention;
Fig. 2 is a sectional view on line 2 of Fig. l;
Fig. 3 is a sectional side view of part of a second embodiment of a reservoir according to the invention; and, Fig. 4 is a sectional view on line 4-4 of Fig. 1.
As seen in Fig. 1 a reservoir designated generally by the numeral 10 is shown and includes a relatively stiff channel portion 12 defining at its ends an inlet 14 and an outlet 16. The channel portion 12 defines a side access which in the drawing faces downwardly between a pair of walls 18, 20. These walls are sealed to one another where they meet at their peripheries and combine with the channel portion 12 to contain liquid medicaments. The seal between the two sides 13, 20 is illustrated in Fig. 2.
The inlet 14 and outlet 16 are equipped with connectors 22, 24 which are sealed in the ends of the channel section 12 for receiving a supply tube 26 and an outlet tube 28.
All of the components described so far are made of silicone rubber (medical grade sold under the trade mark SILASTIC by Dow Corning) and assembled with a suitable adhesive such as that sold also by Dow Corning under the trade - i -- 3 1~37374 mark TYPE A. The resulting reservoir is fluid tight and made only of accepted medical grade materials. It can be sterilized by steam autoclaving and the sterility of the contents is maintained by introducing the medicament through bacterial filter 30 attached to the tube 26. A suitable C filter is sold by Millipore Corp and designated MILLEX, 0.22 ~ m. The filter is attached after autoclaving and just prior to the initial filling of the reservoir. The tubes 26, 28 are preferably thick walled to minimize accidental occlusive kinking and similarly the walls 18, 20 and channel portion 12 are preferably of sufficient thickness to give the channel section some rigidity while having sufficient flexibility to permit filling the reservoir. The natural curvature of the channel section enhances the rigidity of this portion so that while the walls are quite flexible the same material will give sufficient rigidity to the channel section. It would require a considerable force to completely occlude the outlet 16 and deny the outlet of any of the liquid contained in the reservoir. Also the material is naturally resistant to impact damage and consequently the reservoir will be unaffected by accidental impacts normally encountered by an active user.
Fig. 1 is intended to illustrate the reservoir in the shape it would take when it contains some medicament.
As the reservoir is emptied the material will naturally return to a position in which the walls 18, 20 become face-to-face with one another and consequently a pump which would normally withdraw liquid through the tube 28 is assisted very slightly by the natural tendency for the walls to return ~ 2 ~
to their original shape. Consequently the ~eri~cter~ used ~e~ of ~
~373~74 in choosing a pump for a particular system will not include an energy input necessary to collapse the reservoir as the liquid is removed. This is significant in portable packs where battery life is important.
Reference is next made to Fig. 3 which illustrates an alternative embodiment of the reservoir. It will now be appreciated that the channel section 12 (Fig. 1) can be given its necessary rigidity by incorporating a further element. Such an element is indicated by numeral 32 and consists essentially of a tube which provides side access through perforations 34. Functionally this tube simply increases the rigidity of the channel section and is an integral part of the channel section. As shown the material of the side walls is wrapped around the tube and engaged on the tube but in fact these walls could be attached to opposite sides of the tube without actually wrapping right around the tube.
It will be evident that the reservoir can take many forms consistant with the invention and as defined within the scope of the claims.
~ 11373~4 cates with the inlet and outlet. The walls are resiliently flexible so as to be capable of bulging outwardly to accom-modate liquid entering through the inle`t, and collapsing inwardly towards one another from said peripheral regions towards said channel portion as medicament is withdrawn through the outlet.
The invention will be better understood with ~eference to the drawings, in which:
Fig. 1 is a perspective view, part of which is broken away, illustrating a preferred embodiment of a reservoir according to the invention;
Fig. 2 is a sectional view on line 2 of Fig. l;
Fig. 3 is a sectional side view of part of a second embodiment of a reservoir according to the invention; and, Fig. 4 is a sectional view on line 4-4 of Fig. 1.
As seen in Fig. 1 a reservoir designated generally by the numeral 10 is shown and includes a relatively stiff channel portion 12 defining at its ends an inlet 14 and an outlet 16. The channel portion 12 defines a side access which in the drawing faces downwardly between a pair of walls 18, 20. These walls are sealed to one another where they meet at their peripheries and combine with the channel portion 12 to contain liquid medicaments. The seal between the two sides 13, 20 is illustrated in Fig. 2.
The inlet 14 and outlet 16 are equipped with connectors 22, 24 which are sealed in the ends of the channel section 12 for receiving a supply tube 26 and an outlet tube 28.
All of the components described so far are made of silicone rubber (medical grade sold under the trade mark SILASTIC by Dow Corning) and assembled with a suitable adhesive such as that sold also by Dow Corning under the trade - i -- 3 1~37374 mark TYPE A. The resulting reservoir is fluid tight and made only of accepted medical grade materials. It can be sterilized by steam autoclaving and the sterility of the contents is maintained by introducing the medicament through bacterial filter 30 attached to the tube 26. A suitable C filter is sold by Millipore Corp and designated MILLEX, 0.22 ~ m. The filter is attached after autoclaving and just prior to the initial filling of the reservoir. The tubes 26, 28 are preferably thick walled to minimize accidental occlusive kinking and similarly the walls 18, 20 and channel portion 12 are preferably of sufficient thickness to give the channel section some rigidity while having sufficient flexibility to permit filling the reservoir. The natural curvature of the channel section enhances the rigidity of this portion so that while the walls are quite flexible the same material will give sufficient rigidity to the channel section. It would require a considerable force to completely occlude the outlet 16 and deny the outlet of any of the liquid contained in the reservoir. Also the material is naturally resistant to impact damage and consequently the reservoir will be unaffected by accidental impacts normally encountered by an active user.
Fig. 1 is intended to illustrate the reservoir in the shape it would take when it contains some medicament.
As the reservoir is emptied the material will naturally return to a position in which the walls 18, 20 become face-to-face with one another and consequently a pump which would normally withdraw liquid through the tube 28 is assisted very slightly by the natural tendency for the walls to return ~ 2 ~
to their original shape. Consequently the ~eri~cter~ used ~e~ of ~
~373~74 in choosing a pump for a particular system will not include an energy input necessary to collapse the reservoir as the liquid is removed. This is significant in portable packs where battery life is important.
Reference is next made to Fig. 3 which illustrates an alternative embodiment of the reservoir. It will now be appreciated that the channel section 12 (Fig. 1) can be given its necessary rigidity by incorporating a further element. Such an element is indicated by numeral 32 and consists essentially of a tube which provides side access through perforations 34. Functionally this tube simply increases the rigidity of the channel section and is an integral part of the channel section. As shown the material of the side walls is wrapped around the tube and engaged on the tube but in fact these walls could be attached to opposite sides of the tube without actually wrapping right around the tube.
It will be evident that the reservoir can take many forms consistant with the invention and as defined within the scope of the claims.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A reservoir for containing liquid medicaments, the reservoir comprising:
a relatively stiff elongate channel portion which has an inlet at one end and an outlet at the opposite end and which is open at one side, said channel portion defining a side of the reservoir;
a pair of walls which are integrally coupled to said channel portion and which extend away from said portion in generally parallel relationship with said open side of the channel portion between said walls, the walls being sealed together around peripheral regions thereof and defining with said channel portion a liquid-tight internal space which communicates with said inlet and outlet, said walls being resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet and collapsing inwardly towards one another from said peri-pheral regions towards said channel portion as medicament is withdrawn through the outlet:
a relatively stiff elongate channel portion which has an inlet at one end and an outlet at the opposite end and which is open at one side, said channel portion defining a side of the reservoir;
a pair of walls which are integrally coupled to said channel portion and which extend away from said portion in generally parallel relationship with said open side of the channel portion between said walls, the walls being sealed together around peripheral regions thereof and defining with said channel portion a liquid-tight internal space which communicates with said inlet and outlet, said walls being resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet and collapsing inwardly towards one another from said peri-pheral regions towards said channel portion as medicament is withdrawn through the outlet:
2. A reservoir as claimed in claim 1, wherein said channel portion and walls are defined by a single flat sheet of resilient and flexible material which is folded to a substantially flat form and in which substantially contiguous areas of said sheet are disposed in overlying relationship and define said walls while intervening folded portions of said sheet define said channel portion, said overlying areas being sealed together except for openings which define said inlet and outlet.
3. A reservoir as claimed in claim 2, further com-prising a tube extending longitudinally through said channel portion for imparting rigidity to said channel portion, said sheet being wrapped around said tube and sealed thereto, and wherein said tube projects outwardly from said channel portion at both ends and defines said inlet and outlet and is formed with a plurality of openings providing communication between said inlet and outlet and the internal space of the reservoir.
4. A reservoir as claimed in claim 2 or 3, wherein said sheet of resilient and flexible material is silicone rubber and wherein said overlying areas of the sheet are sealed together by a medically acceptable adhesive.
5. A reservoir for containing liquid medicaments, the reservoir comprising:
a relatively stiff elongate channel portion which is open continuously along one side and which defines a side of the reservoir, the channel portion having an inlet at one end and a co-axial outlet at its opposite end, said inlet and out-let communicating with the interior of the reservoir substan-tially continuously along said open side of the channel portion;
a pair of walls which are integrally coupled to said channel portion and which extend away from said portion in generally parallel relationship, with said open side of the channel portion between said walls, the walls being sealed together around peripheral regions thereof and defining with said channel portion a liquid-tight internal space which communicates with said inlet and outlet, said walls being resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet and collapsing inwardly towards one another from said peri-pheral regions towards said channel portion as medicament is withdrawn through the outlet;
wherein said channel portion and walls are defined by a single flat sheet of resilient and flexible material which is folded to a substantially flat form and in which substantially contiguous areas of said sheet are disposed in overlying relationship and define said walls while said channel portion is defined solely by intervening folded portions of said sheet, and is open continuously along said one side between said inlet and outlet, said overlying areas of said sheet being sealed together except for openings which define said inlet and outlet; and connectors received in said inlet and outlet and sealed to said channel portion for permitting connection of said reservoir to external tubing.
a relatively stiff elongate channel portion which is open continuously along one side and which defines a side of the reservoir, the channel portion having an inlet at one end and a co-axial outlet at its opposite end, said inlet and out-let communicating with the interior of the reservoir substan-tially continuously along said open side of the channel portion;
a pair of walls which are integrally coupled to said channel portion and which extend away from said portion in generally parallel relationship, with said open side of the channel portion between said walls, the walls being sealed together around peripheral regions thereof and defining with said channel portion a liquid-tight internal space which communicates with said inlet and outlet, said walls being resiliently flexible so as to be capable of bulging outwardly to accommodate liquid entering through the inlet and collapsing inwardly towards one another from said peri-pheral regions towards said channel portion as medicament is withdrawn through the outlet;
wherein said channel portion and walls are defined by a single flat sheet of resilient and flexible material which is folded to a substantially flat form and in which substantially contiguous areas of said sheet are disposed in overlying relationship and define said walls while said channel portion is defined solely by intervening folded portions of said sheet, and is open continuously along said one side between said inlet and outlet, said overlying areas of said sheet being sealed together except for openings which define said inlet and outlet; and connectors received in said inlet and outlet and sealed to said channel portion for permitting connection of said reservoir to external tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000304111A CA1137374A (en) | 1978-05-25 | 1978-05-25 | Portable insulin reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000304111A CA1137374A (en) | 1978-05-25 | 1978-05-25 | Portable insulin reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137374A true CA1137374A (en) | 1982-12-14 |
Family
ID=4111548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000304111A Expired CA1137374A (en) | 1978-05-25 | 1978-05-25 | Portable insulin reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1137374A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1086803A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Silicone bag assembly |
| EP1086708A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Sterilization-in-place arrangement and method for intravenous bags and the like |
| EP1086707A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Apparatus and method for the sterilization-in-place of intravenous bags and the like |
| US6632164B1 (en) | 1999-09-27 | 2003-10-14 | Stephen Warburton-Pitt | Silicone bag assembly manufacturing apparatus |
| US10449292B2 (en) | 2014-09-22 | 2019-10-22 | Becton, Dickinson And Company | Plate with integral fluid path channels |
| US11241529B2 (en) | 2015-09-21 | 2022-02-08 | Becton, Dickinson And Company | Fluid interconnection scheme between reservoir, pump and filling member |
-
1978
- 1978-05-25 CA CA000304111A patent/CA1137374A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1086803A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Silicone bag assembly |
| EP1086708A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Sterilization-in-place arrangement and method for intravenous bags and the like |
| EP1086707A2 (en) * | 1999-09-27 | 2001-03-28 | Saint-Gobain Performance Plastics Corporation | Apparatus and method for the sterilization-in-place of intravenous bags and the like |
| EP1086803A3 (en) * | 1999-09-27 | 2001-09-26 | Saint-Gobain Performance Plastics Corporation | Silicone bag assembly |
| EP1086707A3 (en) * | 1999-09-27 | 2003-01-29 | Saint-Gobain Performance Plastics Corporation | Apparatus and method for the sterilization-in-place of intravenous bags and the like |
| EP1086708A3 (en) * | 1999-09-27 | 2003-01-29 | Saint-Gobain Performance Plastics Corporation | Sterilization-in-place arrangement and method for intravenous bags and the like |
| US6582653B1 (en) | 1999-09-27 | 2003-06-24 | Saint-Gobain Performance Plastics Corporation | Apparatus and method for the sterilization-in-place of intravenous bags and the like |
| US6632164B1 (en) | 1999-09-27 | 2003-10-14 | Stephen Warburton-Pitt | Silicone bag assembly manufacturing apparatus |
| US10449292B2 (en) | 2014-09-22 | 2019-10-22 | Becton, Dickinson And Company | Plate with integral fluid path channels |
| US11383028B2 (en) | 2014-09-22 | 2022-07-12 | Becton, Dickinson And Company | Plate with integral fluid path channels |
| US11241529B2 (en) | 2015-09-21 | 2022-02-08 | Becton, Dickinson And Company | Fluid interconnection scheme between reservoir, pump and filling member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |