EP0858312A2 - Dispositif d'assistance a la fonction cardiaque comportant des chambres gonflables elastiques - Google Patents

Dispositif d'assistance a la fonction cardiaque comportant des chambres gonflables elastiques

Info

Publication number
EP0858312A2
EP0858312A2 EP96945508A EP96945508A EP0858312A2 EP 0858312 A2 EP0858312 A2 EP 0858312A2 EP 96945508 A EP96945508 A EP 96945508A EP 96945508 A EP96945508 A EP 96945508A EP 0858312 A2 EP0858312 A2 EP 0858312A2
Authority
EP
European Patent Office
Prior art keywords
heart
filling chambers
elastic
wall
chambers
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.)
Withdrawn
Application number
EP96945508A
Other languages
German (de)
English (en)
Inventor
Arif Kazi
Volker Paul
Peter Feindt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP0858312A2 publication Critical patent/EP0858312A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
    • A61M60/191—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart mechanically acting upon the outside of the patient's native heart, e.g. compressive structures placed around the heart
    • 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
    • A61M60/289—Devices for mechanical circulatory actuation assisting the residual heart function by means mechanically acting upon the patient's native heart or blood vessel structure, e.g. direct cardiac compression [DCC] 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
    • A61M60/40—Details relating to driving
    • A61M60/465—Details relating to driving for devices for mechanical circulatory actuation
    • A61M60/468—Details relating to driving for devices for mechanical circulatory actuation the force acting on the actuation means being hydraulic or pneumatic
    • 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
    • A61M60/861—Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body

Definitions

  • the invention relates to a device for supporting the cardiac function with mechanical pressure-exerting elastic filling chambers which act specifically on the left ventricular area and which can be filled with a medium via connecting lines and then emptied again.
  • DE-33 07 211 AI shows an implementable device for supporting the activity of the myocardium, which consists of a rigid-walled container housing that supports the at least partially surrounds the ventricular area of the myocardium.
  • Pump chambers are provided on the inside of the container housing, which deform the heart muscle wall directly at corresponding points.
  • this known device suffers from the disadvantage that the pressure spread to certain ventricular areas of the heart continues within the organ in such a way that opposite areas of the heart are pressed against the rigid container wall in accordance with the pressure-exerting centers. In this way irreversible damage to the heart or the vessels can be caused.
  • the natural expansion behavior of the heart is permanently impaired by the rigid container wall.
  • the invention is therefore based on the object of developing a device for supporting the cardiac function with mechanical pressure-exerting elastic filling chambers which act specifically on the left ventricular area and which can be filled with a medium via connecting lines and emptied again such that the device is attached to the heart over a large area is so that on the one hand the heart experiences no significant restrictions in its freedom of movement and on the other hand the device can be attached to the heart surface as non-slip as possible.
  • a device for supporting the heart function is designed in such a way that an elastic sleeve is provided, which can be at least partially placed around the heart and on the wall of which there are filling chambers in the area of the left ventricle.
  • the filling chambers can also be detachably attached by means of suitable connecting elements which are incorporated in the wall of the elastic casing.
  • the filling chamber is particularly preferably located on the outside of the elastic cover and has an expansion behavior which is primarily directed against the elastic cover, so that a targeted pressure can be exerted on the inside of the elastic cover.
  • This can be made possible, for example, in that the filling chamber casing is made more elastic on the side of the elastic casing than on the side facing away from the elastic casing.
  • the elastic sheath according to the invention provides, at suitable points which correspond to the areas of the left ventricle of the heart, filling chambers which are incorporated or attachable to the wall and which in turn likewise consist of an elastic material.
  • the filling chambers which are preferably incorporated in pairs opposite one another on the wall of the elastic casing, have connection valves for filling with a suitable medium, to which corresponding connection lines can be attached.
  • connecting elements are also incorporated on the wall, on which the filling chambers can subsequently be attached to the wall of the elastic sleeve. - Velcro fasteners or the like are suitable for this purpose.
  • the material and size of the elastic sleeve must be selected so that on the one hand the heart can be wrapped tightly and on the other hand the expansion behavior of the heart remains as unimpaired as possible.
  • the sheath must be so slightly stretchy that it hardly or not at all hinders the expansion of the heart in the diastolic state; on the other hand, there must still be sufficient residual elasticity in the diastolic state to prevent the sheath from slipping on the heart surface.
  • Fig. La schematic cross section through a heart with an attached device to support the heart function in the diastolic state
  • Fig. Lb corresponding cross-section in the systolic state.
  • FIG. 1 a shows the cross section of a heart 1 with a flared left ventricle 2 and the right ventricle 3.
  • the elastic sheath 4 is provided close to the outer heart wall and is located at two opposing locations in the area of the left ventricle 2, two filling chambers 5 in the depressurized or emptied state.
  • the filling chambers 5 are either glued or vulcanized onto the wall of the elastic casing. Likewise, the filling chambers can be specially designed and can be detachably connected to the elastic sheath via connecting elements which are incorporated in the wall.
  • connection lines are provided above the respective filling chambers 5 and are rigidly connected to one another via a bracket (not shown in FIG. 1 a). Likewise, no connection valves are drawn on the filling chambers in FIG. 1 a, via which the connection lines (also not shown) for filling can be created.
  • the material of the elastic sheath must be selected such that, on the one hand, the elastic sheath does not slip sideways relative to the heart wall, but on the other hand the elastic sheath has sufficient elasticity to unhinder the expansion behavior of the organ to follow.

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Mechanical Engineering (AREA)
  • Anesthesiology (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)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un dispositif d'assistance à la fonction cardiaque, qui comporte des chambres gonflables élastiques exerçant une pression mécanique et agissant de manière ciblée sur la zone du ventricule gauche, qui peuvent être gonflées avec un milieu et être ensuite dégonflées, par l'intermédiaire de conduites de raccordement. Cette invention se caractérise en ce qu'il est prévu une enveloppe élastique qui peut être appliquée au moins en partie autour du coeur et dont la paroi comporte des chambres gonflables dans la zone du ventricule gauche.
EP96945508A 1995-10-18 1996-10-17 Dispositif d'assistance a la fonction cardiaque comportant des chambres gonflables elastiques Withdrawn EP0858312A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538796 1995-10-18
DE19538796A DE19538796C2 (de) 1995-10-18 1995-10-18 Vorrichtung zur Unterstützung der Herzfunktion mit elastischen Füllkammern
PCT/DE1996/001978 WO1997014286A2 (fr) 1995-10-18 1996-10-17 Dispositif d'assistance a la fonction cardiaque comportant des chambres gonflables elastiques

Publications (1)

Publication Number Publication Date
EP0858312A2 true EP0858312A2 (fr) 1998-08-19

Family

ID=7775176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945508A Withdrawn EP0858312A2 (fr) 1995-10-18 1996-10-17 Dispositif d'assistance a la fonction cardiaque comportant des chambres gonflables elastiques

Country Status (5)

Country Link
US (1) US6206820B1 (fr)
EP (1) EP0858312A2 (fr)
JP (1) JPH11513578A (fr)
DE (1) DE19538796C2 (fr)
WO (1) WO1997014286A2 (fr)

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US6332893B1 (en) 1997-12-17 2001-12-25 Myocor, Inc. Valve to myocardium tension members device and method
US6260552B1 (en) 1998-07-29 2001-07-17 Myocor, Inc. Transventricular implant tools and devices
EP2111800B1 (fr) 1998-07-29 2016-06-15 Edwards Lifesciences AG Outils d'implant transventriculaire et dispositifs
AUPQ100699A0 (en) 1999-06-17 1999-07-08 Northern Sydney Area Health Service An assist device for the failing heart
CA2402504A1 (fr) 2000-03-10 2001-09-20 Paracor Surgical, Inc. Harnais cardiaque extensible permettant de traiter l'insuffisance cardiaque congestive
US6537198B1 (en) 2000-03-21 2003-03-25 Myocor, Inc. Splint assembly for improving cardiac function in hearts, and method for implanting the splint assembly
US6616684B1 (en) * 2000-10-06 2003-09-09 Myocor, Inc. Endovascular splinting devices and methods
US6723038B1 (en) 2000-10-06 2004-04-20 Myocor, Inc. Methods and devices for improving mitral valve function
AUPR333301A0 (en) * 2001-02-23 2001-03-22 Northern Sydney Area Health Service Determining the volume of a normal heart and its pathological and treated variants by using dimension sensors
DE60227676D1 (de) 2001-09-07 2008-08-28 Mardil Inc Verfahren und gerät für die externe herzstabilisierung
WO2003022176A2 (fr) * 2001-09-10 2003-03-20 Paracor Medical, Inc. Dispositif de traitement de l'insuffisance cardiaque
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WO2005034718A2 (fr) * 2003-10-15 2005-04-21 Eli Bar Dispositif d'assistance cardiaque fonde sur l'amplification
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JP6769618B2 (ja) * 2015-04-01 2020-10-14 ユニバーシティ オブ レスターＵｎｉｖｅｒｓｉｔｙ Ｏｆ Ｌｅｉｃｅｓｔｅｒ 心臓補助装置
US12478773B2 (en) 2020-10-01 2025-11-25 Lifebridge Technologies Llc Dynamic drive system for cardiac systolic and diastolic assist
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Also Published As

Publication number Publication date
DE19538796C2 (de) 1999-09-23
WO1997014286A2 (fr) 1997-04-24
WO1997014286A3 (fr) 1997-05-29
DE19538796A1 (de) 1997-04-24
US6206820B1 (en) 2001-03-27
JPH11513578A (ja) 1999-11-24

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