FR3042416A1 - NON-MOTORIZED IMPLANTABLE CIRCULATORY ASSISTANCE DEVICE - Google Patents
NON-MOTORIZED IMPLANTABLE CIRCULATORY ASSISTANCE DEVICE Download PDFInfo
- Publication number
- FR3042416A1 FR3042416A1 FR1559796A FR1559796A FR3042416A1 FR 3042416 A1 FR3042416 A1 FR 3042416A1 FR 1559796 A FR1559796 A FR 1559796A FR 1559796 A FR1559796 A FR 1559796A FR 3042416 A1 FR3042416 A1 FR 3042416A1
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- Prior art keywords
- segment
- downstream
- upstream
- assistance device
- aorta
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- 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.)
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 23
- 210000000709 aorta Anatomy 0.000 claims abstract description 16
- 239000008280 blood Substances 0.000 claims abstract description 7
- 210000004369 blood Anatomy 0.000 claims abstract description 7
- 230000036772 blood pressure Effects 0.000 claims abstract 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 230000000754 repressing effect Effects 0.000 abstract 1
- 230000017531 blood circulation Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009795 derivation Methods 0.000 description 1
Classifications
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- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/247—Positive displacement blood pumps
- A61M60/253—Positive displacement blood pumps including a displacement member directly acting on the blood
- A61M60/268—Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/152—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel branching on and drawing blood from a blood vessel
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/835—Constructional details other than related to driving of positive displacement blood pumps
- A61M60/837—Aspects of flexible displacement members, e.g. shapes or materials
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/89—Valves
- A61M60/894—Passive valves, i.e. valves actuated by the blood
-
- 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
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/89—Valves
- A61M60/894—Passive valves, i.e. valves actuated by the blood
- A61M60/896—Passive valves, i.e. valves actuated by the blood having flexible or resilient parts, e.g. flap valves
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Anesthesiology (AREA)
- Mechanical Engineering (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
Abstract
Dispositif d'assistance circulatoire implantable non motorisé caractérisé en ce qu'il se compose d'une conduite de dérivation ayant : - un segment amont (1) avec une entrée pour être branché sur un point de dérivation amont (Aam) de l'aorte (A), - un segment aval (2) avec une sortie pour être branché sur un point de dérivation aval (Aav) de l'aorte, - une chambre expansible élastiquement (3), branchée entre le segment amont (1) et le segment aval (2) pour recevoir un volume de sang à chaque systole et le refouler lors de la diastole suivante, - un clapet de retenue (4) en aval de la chambre expansible (3) et en amont de la sortie (Aav), - le clapet de retenue (4) s'ouvrant en fonction de la différence de pression sanguine entre le segment d'entrée (1) et le segment de sortie (2), - tous les éléments (1, 2, 3, 4) du dispositif d'assistance étant biocompatibles .Non-motorized implantable circulatory assistance device characterized in that it consists of a bypass line having: an upstream segment (1) with an inlet for being connected to an upstream branch point (Aam) of the aorta (A), - a downstream segment (2) with an output to be connected to a downstream branch point (Aav) of the aorta, - an elastically expandable chamber (3), connected between the upstream segment (1) and the downstream segment (2) for receiving a volume of blood at each systole and repressing it during the following diastole, - a check valve (4) downstream of the expandable chamber (3) and upstream of the outlet (Aav), - the check valve (4) opening as a function of the difference in blood pressure between the input segment (1) and the output segment (2), - all the elements (1, 2, 3, 4) of the assistance device being biocompatible.
Description
Domaine de l’inventionField of the invention
La présente invention se rapporte à un dispositif d’assistance circulatoire implantable non motorisé, c'est-à-dire indépendant de toute source d’énergie qui serait implantée en même temps que le dispositif d’assistance circulatoire.The present invention relates to a non-motorized implantable circulatory assistance device, that is to say independent of any source of energy that would be implanted at the same time as the circulatory assistance device.
Etat de la techniqueState of the art
Il existe de multiples propositions de dispositifs d’assistance circulatoire implantables avec une liaison à l’extérieur et une motorisation. Ces dispositifs ont, de façon globale, l’inconvénient d’être très encombrants, d’avoir une partie implantée et une partie non implantée et de nécessiter une source d’énergie.There are multiple proposals for implantable circulatory assistance devices with an external connection and motorization. These devices generally have the disadvantage of being very bulky, having an implanted part and a non-implanted part and requiring a source of energy.
But de l’inventionPurpose of the invention
La présente invention a pour but de développer un dispositif d’assistance circulatoire très peu encombrant, simple, implantable et non motorisé donc autonome.The present invention aims to develop a circulatory assistance device very compact, simple, implantable and not motorized so autonomous.
Exposé et avantages de l’invention A cet effet, la présente invention a pour objet un dispositif d’assistance circulatoire implantable non motorisé caractérisé en ce qu’il se compose d’une conduite de dérivation ayant : - un segment amont avec une entrée pour être branché sur un point de dérivation amont de l’aorte, - un segment aval avec une sortie pour être branché sur un point de dérivation aval de l’aorte, - une chambre expansible élastiquement, branchée entre le segment amont et le segment aval pour recevoir un volume de sang à chaque systole et le refouler lors de la diastole suivante, - un clapet de retenue en aval de la chambre expansible et en amont de la sortie, - le clapet de retenue s’ouvrant en fonction de la différence de pression sanguine entre le segment d’entrée et le segment de sortie, - tous les éléments du dispositif d’assistance étant biocompatibles.DESCRIPTION AND ADVANTAGES OF THE INVENTION For this purpose, the subject of the present invention is a non-motorized implantable circulatory assistance device characterized in that it consists of a bypass line having: an upstream segment with an input for be connected to an upstream branch point of the aorta, - a downstream segment with an outlet to be connected to a downstream branch point of the aorta, - an elastically expandable chamber, connected between the upstream segment and the downstream segment for receive a volume of blood at each systole and repress it during the following diastole, - a check valve downstream of the expandable chamber and upstream of the outlet, - the check valve opening according to the pressure difference blood flow between the input segment and the output segment, - all the elements of the assistance device being biocompatible.
Le dispositif d’assistance selon l’invention a l’avantage d’être parfaitement autonome et de s’intégrer sans difficulté dans le corps humain, à la fois à cause de son faible encombrement et de son autonomie puisque non motorisé.The assistance device according to the invention has the advantage of being perfectly autonomous and integrating without difficulty in the human body, both because of its small size and its autonomy since not motorized.
Suivant une caractéristique avantageuse, la chambre expansible est formée d’une poche logée dans une enveloppe rigide avec interposition d’un élément élastique appuyé sur l’enveloppe pour permettre l’extension et la rétraction élastiques de la poche.According to an advantageous characteristic, the expandable chamber is formed of a pocket housed in a rigid casing with the interposition of an elastic element pressed against the casing to allow elastic expansion and retraction of the bag.
Suivant une autre caractéristique avantageuse, la chambre expansible élastiquement est une chambre en un matériau élastique.According to another advantageous characteristic, the elastically expandable chamber is a chamber made of an elastic material.
Dessinsdrawings
La présente invention sera décrite ci-après de manière plus détaillée à l’aide d’un dispositif d’assistance circulatoire représenté d’une manière très schématique dans la figure annexée.The present invention will be described hereinafter in more detail with the help of a circulatory assist device shown in a very diagrammatic manner in the appended figure.
Description de modes de réalisation de l’inventionDescription of Embodiments of the Invention
Selon la figure, l’invention est un dispositif d’assistance circulatoire 100 non motorisé implantable dans le corps humain. Ce dispositif 100 est branché en dérivation sur l’aorte A. Il se compose globalement d’une conduite de dérivation formée d’un segment amont 1 et d’un segment aval 2.According to the figure, the invention is a non-motorized circulatory assistance device 100 implantable in the human body. This device 100 is connected bypass on the aorta A. It generally consists of a branch line formed of an upstream segment 1 and a downstream segment 2.
Le segment amont 1 est destiné à être relié par une entrée à un point de dérivation amont Aam de l’aorte et à une chambre expansible élastiquement 3 dont le volume à l’état expansé correspond à une fraction d’un volume sanguin pulsé lors de la systole.The upstream segment 1 is intended to be connected by an inlet to an upstream branch point Aam of the aorta and to an elastically expandable chamber 3, the volume of which in the expanded state corresponds to a fraction of a pulsed blood volume during systole.
La chambre 3 est reliée en sortie S au segment aval 2 dont l’autre extrémité est destinée à être reliée à l’aorte A en un point de dérivation aval Aav, lui-même en aval du point de dérivation amont Aam dans l’aorte A.The chamber 3 is connected at the outlet S to the downstream segment 2, the other end of which is intended to be connected to the aorta A at a downstream diversion point Aav, itself downstream of the upstream diversion point Aam in the aorta AT.
Ce segment aval 2 est équipé d’un clapet unidirectionnel 4, c'est-à-dire s’ouvrant dans le sens allant de la chambre 3 vers le point de dérivation aval Aav. Ce clapet unidirectionnel 4 ne s’ouvre que lorsque la pression du liquide Pch dans la chambre est supérieure à la pression avale Pav.This downstream segment 2 is equipped with a unidirectional valve 4, that is to say, opening in the direction from the chamber 3 to the downstream branch point Aav. This unidirectional valve 4 opens only when the pressure of the liquid Pch in the chamber is greater than the downstream pressure Pav.
En fonctionnement et selon le cycle systole/diastole, la pression est sensiblement conservée entre le point de dérivation amont Aam et le point de dérivation aval Aav de l’aorte. Mais les pertes de charge dans le segment de dérivation amont 1 et le segment de dérivation aval 2 sont telles que la pression à l’entrée Pe de la chambre 3 est inférieure à la pression Ps à la sortie de la chambre 3, cette dernière étant sensiblement égale à la pression Pam/Pav dans l’aorte.In operation and according to the systole / diastole cycle, the pressure is substantially maintained between the upstream diversion point Aam and the downstream diversion point Aav of the aorta. But the pressure losses in the upstream branch segment 1 and the downstream branch segment 2 are such that the pressure at the inlet Pe of the chamber 3 is lower than the pressure Ps at the outlet of the chamber 3, the latter being substantially equal to the pressure Pam / Pav in the aorta.
Mais après la systole, la situation s’inverse puisque la pression Pch qui règne dans la chambre 3 est alors supérieure à la pression Pav au point de dérivation aval Aav dans l’aorte de sorte que la chambre 3 peut évacuer le liquide vers l’aorte par sa rétraction élastique.But after the systole, the situation is reversed because the pressure Pch prevailing in the chamber 3 is then greater than the pressure Pav at the downstream derivation point Aav in the aorta so that the chamber 3 can evacuate the liquid to the aorta by its elastic retraction.
La chambre 3 est constituée par une poche 31 de volume variable, logée dans une enveloppe 32 relativement rigide ou de volume fixe et qui protège la poche 31 de façon que le volume de la poche puisse varier pour recevoir ou refouler un certain volume de sang.The chamber 3 is constituted by a pocket 31 of variable volume, housed in a relatively rigid envelope 32 or fixed volume and which protects the pocket 31 so that the volume of the pocket can vary to receive or repress a certain volume of blood.
Selon un premier mode de réalisation, la poche 31 est en matériau ayant une certaine élasticité ou partiellement en un tel matériau de façon à n’opposer à l’arrivée du flux sanguin par le segment amont 1 qu’une contrepression inférieure à celle du flux sanguin pendant la systole.According to a first embodiment, the pocket 31 is made of material having a certain elasticity or partially of such a material so as to oppose the arrival of the blood flow by the upstream segment 1 a counterpressure lower than that of the flow blood during systole.
Il est à remarquer que cette pression Pe du flux sanguin à l’entrée E de la poche 31 est inférieure à la pression Pam ou Pav dans l’aorte A à cause des pertes de charge.It should be noted that this pressure Pe of the blood flow at the inlet E of the pocket 31 is lower than the pressure Pam or Pav in the aorta A because of the pressure drops.
La pression Pav opposée au clapet 4 étant ainsi plus élevée que celle dans la poche 31, le clapet 4 est fermé et la poche 31 se remplit.The pressure Pav opposite to the valve 4 being thus higher than that in the pocket 31, the valve 4 is closed and the pocket 31 fills.
Comme pendant la diastole, la pression Pam/Pav dans l’aorte A est faible, la poche 31 peut se rétracter et se vider à travers le clapet 4 vers le point de dérivation aval Aav.As during the diastole, the pressure Pam / Pav in the aorta A is low, the pocket 31 can retract and empty through the valve 4 to the downstream diversion point Aav.
Selon un second mode de réalisation, la poche 31 est extansible mais la réaction élastique est générée par un élément élastique 33 représenté schématiquement. Cet élément élastique 33 logé dans l’enveloppe 32 s’appuie sur celle-ci et comprime la poche 31 en lui opposant une réaction inférieure à celle exercée par le flux sanguin dans la systole, pour permettre le remplissage de la poche 31. Lorsque cette force disparaît par l’arrêt du flux sanguin pendant la diastole, la poche 31 peut refouler le sang sous l’effet de la force/pression, exercée par l’élément 33.According to a second embodiment, the pocket 31 is extensible but the elastic reaction is generated by an elastic element 33 shown schematically. This elastic element 33 housed in the casing 32 rests on the latter and compresses the pocket 31 by opposing it a reaction lower than that exerted by the blood flow in the systole, to allow the filling of the pocket 31. When this force disappears by the stop of the blood flow during the diastole, the pocket 31 can push back the blood under the effect of the force / pressure, exerted by the element 33.
Selon une variante de réalisation, le dispositif d’assistance circulatoire 100 est complété par un dispositif motorisé, extérieur, qui permet une assistance active provisoire à partir de l’extérieur par un dispositif motorisé pour faciliter pendant une période critique, le fonctionnement du dispositif d’assistance, implanté 100.According to an alternative embodiment, the circulatory assistance device 100 is supplemented by a motorized device, external, which allows temporary active assistance from the outside by a motorized device to facilitate during a critical period, the operation of the device. assistance, implanted 100.
Le dispositif extérieur 110 provisoire est par exemple une pompe motorisée 111 ou un générateur de pression, relié par une conduite 112 à l’enveloppe 32 ou à l’élément élastique 33 pour leur communiquer une impulsion de pression/dépression suivant le rythme cardiaque et assister provisoirement l’expansion/rétraction du volume de la poche 31. Après cette période provisoire, la liaison 112 est enlevée et le dispositif 100 fonctionne de façon autonome, passive.The temporary external device 110 is for example a motorized pump 111 or a pressure generator, connected by a line 112 to the envelope 32 or to the elastic element 33 to communicate a pulse of pressure / depression according to the heart rate and assist Provisionally the expansion / retraction of the volume of the pocket 31. After this provisional period, the link 112 is removed and the device 100 operates autonomously, passively.
NOMENCLATURE 100 Dispositif d’assistance circulatoire 1 Segment amont 2 Segment aval 3 Chambre de volume variable 31 Poche de volume variable 32 Enveloppe relativement rigide 33 Elément élastique 4 Clapet anti-retour 110 Dispositif extérieur 111 Pompe/générateur d’impulsion de pression 112 Conduite de liaisonNOMENCLATURE 100 Circulatory assistance device 1 Upstream segment 2 Downstream segment 3 Variable volume chamber 31 Variable volume pocket 32 Relatively rigid envelope 33 Elastic element 4 Non-return valve 110 External device 111 Pressure pulse pump / generator 112 Driving bond
Aam Dérivation amont Aav Dérivation aval Pam Pression amont Pav Pression aval E Entrée de la chambre 3 5 Sortie de la chambre 3 Pe Pression à l’entrée E Ps Pression à la sortie S Pch Pression dans la chambreAam Upstream Bypass Aav Upstream Bypass Pam Upstream Pressure Pav Downstream Pressure E Chamber Inlet 3 5 Chamber Outlet 3 Pe Inlet Pressure E Ps Inlet Pressure S Pch Inlet Pressure
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1559796A FR3042416B1 (en) | 2015-10-15 | 2015-10-15 | NON-MOTORIZED IMPLANTABLE CIRCULATORY ASSISTANCE DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1559796A FR3042416B1 (en) | 2015-10-15 | 2015-10-15 | NON-MOTORIZED IMPLANTABLE CIRCULATORY ASSISTANCE DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3042416A1 true FR3042416A1 (en) | 2017-04-21 |
| FR3042416B1 FR3042416B1 (en) | 2017-11-03 |
Family
ID=54979786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1559796A Active FR3042416B1 (en) | 2015-10-15 | 2015-10-15 | NON-MOTORIZED IMPLANTABLE CIRCULATORY ASSISTANCE DEVICE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3042416B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195623A (en) * | 1977-07-21 | 1980-04-01 | Phillips Steven J | Parallel aorta balloon pump and method of using same |
| US4938766A (en) * | 1987-08-28 | 1990-07-03 | Jarvik Robert K | Prosthetic compliance devices |
| US20030233023A1 (en) * | 2000-09-23 | 2003-12-18 | Harefield Cardiac Limited | Blood circulation assistance device |
| US6770024B1 (en) * | 2000-03-28 | 2004-08-03 | Stony Brook Surgical Innovations, Inc. | Implantable counterpulsation cardiac assist device |
| US20060217588A1 (en) * | 2003-02-24 | 2006-09-28 | Yossi Gross | Fully-implantable cardiac recovery system |
-
2015
- 2015-10-15 FR FR1559796A patent/FR3042416B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195623A (en) * | 1977-07-21 | 1980-04-01 | Phillips Steven J | Parallel aorta balloon pump and method of using same |
| US4938766A (en) * | 1987-08-28 | 1990-07-03 | Jarvik Robert K | Prosthetic compliance devices |
| US6770024B1 (en) * | 2000-03-28 | 2004-08-03 | Stony Brook Surgical Innovations, Inc. | Implantable counterpulsation cardiac assist device |
| US20030233023A1 (en) * | 2000-09-23 | 2003-12-18 | Harefield Cardiac Limited | Blood circulation assistance device |
| US20060217588A1 (en) * | 2003-02-24 | 2006-09-28 | Yossi Gross | Fully-implantable cardiac recovery system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3042416B1 (en) | 2017-11-03 |
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