CH493250A - Transfusion device - Google Patents
Transfusion deviceInfo
- Publication number
- CH493250A CH493250A CH988068A CH988068A CH493250A CH 493250 A CH493250 A CH 493250A CH 988068 A CH988068 A CH 988068A CH 988068 A CH988068 A CH 988068A CH 493250 A CH493250 A CH 493250A
- Authority
- CH
- Switzerland
- Prior art keywords
- reservoir
- tank
- liquid
- walls
- transfusion
- Prior art date
Links
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
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/155—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by gas introduced into the reservoir
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)
Description
Appareil de transfusion
Le brevet principal a pour objet un appareil de transfusion caractérisé par le fait qu'il comprend un boîtier fermé hermétiquement, contenant un réservoir en matière souple contenant un liquide à injecter dans le vaisseau du patient et relié à un conduit extérieur par une vanne, et une valve montée sur le boîtier pour l'introduction dans le boîtier d'un gaz sous pression destiné à chasser le liquide contenu dans le réservoir par compression de ce réservoir.
On a en outre déjà proposé de diviser le réservoir en deux chambres, l'une contenant un liquide physiologique et l'autre du plasma en poudre, les chambres étant mises en communication lors de la transfusion.
Ces appareils fonctionnent de façon satisfaisante lorsqu'ils sont disposés l'ouverture en bas, mais lorsque l'ouverture est disposée en haut les parois du réservoir se collent l'une contre l'autre dans leur partie supérieure sous l'effet de la pression du gaz contenu dans l'enceinte, après vidange de la partie supérieure du réservoir, empêchant l'extraction du liquide du reste du réservoir. On a proposé de remédier à cet inconvénient en disposant un fil en matière peu compressible dans le réservoir de manière à empêcher un collage des parois du réservoir à proximité du fil.
La présente invention vise également à empêcher un collage complet des parois, sans qu'il soit toutefois nécessaire d'utiliser un fil.
L'invention a pour objet un appareil selon la revendication du brevet principal, caractérisé par le fait que la paroi du réservoir présente un pli intérieur permanent s'étendant dans la direction d'écoulement du liquide.
Le pli s'étendra, par exemple, de la vanne à l'extrémité opposée du réservoir, sur un seul côté de ce réservoir. Une largeur du pli de 1 à 2 mm est suffisante pour empêcher un collage complet des parois du réservoir à proximité du pli. La permanence et la rigidité du pli sont assurées par soudage de la matière thermoplastique généralement utilisée pour le réservoir. I1 est évidemment possible de prévoir deux plis ou davantage.
REVENDICATION
Appareil de transfusion selon la revendication du brevet principal, caractérisé par le fait que la paroi du réservoir présente un pli intérieur permanent s'étendant dans la direction d'écoulement du liquide.
**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.
Transfusion device
The main patent relates to a transfusion device characterized by the fact that it comprises a hermetically sealed housing, containing a flexible material reservoir containing a liquid to be injected into the patient's vessel and connected to an external conduit by a valve, and a valve mounted on the housing for the introduction into the housing of a pressurized gas intended to expel the liquid contained in the reservoir by compression of this reservoir.
It has also already been proposed to divide the reservoir into two chambers, one containing physiological liquid and the other powdered plasma, the chambers being placed in communication during the transfusion.
These devices work satisfactorily when they are arranged with the opening at the bottom, but when the opening is arranged at the top, the walls of the tank stick together in their upper part under the effect of the pressure. of the gas contained in the enclosure, after emptying the upper part of the tank, preventing the extraction of the liquid from the rest of the tank. It has been proposed to remedy this drawback by placing a wire of low compressible material in the reservoir so as to prevent the walls of the reservoir from sticking close to the wire.
The present invention also aims to prevent complete sticking of the walls, without it being however necessary to use a wire.
The object of the invention is an apparatus according to the claim of the main patent, characterized in that the wall of the reservoir has a permanent internal fold extending in the direction of flow of the liquid.
The fold will extend, for example, from the valve to the opposite end of the tank, on only one side of that tank. A ply width of 1 to 2 mm is sufficient to prevent complete sticking of the tank walls near the ply. The permanence and rigidity of the fold are ensured by welding the thermoplastic material generally used for the tank. It is obviously possible to provide two or more folds.
CLAIM
Transfusion apparatus according to the claim of the main patent, characterized in that the wall of the reservoir has a permanent internal fold extending in the direction of flow of the liquid.
** ATTENTION ** end of DESC field can contain start of CLMS **.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH988068A CH493250A (en) | 1966-06-27 | 1968-07-02 | Transfusion device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH927966A CH461034A (en) | 1966-06-27 | 1966-06-27 | Transfusion device |
| CH1224166A CH470185A (en) | 1966-06-27 | 1966-08-24 | Transfusion device |
| CH822367A CH484678A (en) | 1966-06-27 | 1967-06-09 | Transfusion device |
| CH988068A CH493250A (en) | 1966-06-27 | 1968-07-02 | Transfusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH493250A true CH493250A (en) | 1970-07-15 |
Family
ID=27429132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH988068A CH493250A (en) | 1966-06-27 | 1968-07-02 | Transfusion device |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH493250A (en) |
-
1968
- 1968-07-02 CH CH988068A patent/CH493250A/en unknown
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLZ | Patent of addition ceased |