CA3100554C - Coring device and coring and insertion assembly comprising such a device - Google Patents

Coring device and coring and insertion assembly comprising such a device

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Publication number
CA3100554C
CA3100554C CA3100554A CA3100554A CA3100554C CA 3100554 C CA3100554 C CA 3100554C CA 3100554 A CA3100554 A CA 3100554A CA 3100554 A CA3100554 A CA 3100554A CA 3100554 C CA3100554 C CA 3100554C
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coring
tool
surgical tool
head
wall
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CA3100554A
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CA3100554A1 (en
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Arnaud Mascarell
Stephane GARRIGUE
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Fineheart
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Priority claimed from FR1854238A external-priority patent/FR3081332B1/en
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Abstract

The invention relates to a coring device for forming an opening in a tissue wall, this device comprising: - a body having a longitudinal axis, said body having a proximal end and a distal end, said body having an internal recess, - a coring head (13) having a transection blade (14), this head being movable between a rest position and an actuated position, - an actuation mechanism for moving said head between said positions, said mechanism having an actuation rod (15), at one end of which said movable head is placed, - a lumen (20) extending through at least the proximal end of said body, said actuation rod (15) and said coring head (13) to allow the passage of a flexible guide element, and - the distal end of said body forms a support (21) for a surgical tool, this tool support (21) being configured, on the one hand, to receive a hollow surgical tool (22) with a positive fit and to support this tool, this tool surrounding the distal end of said body when it is placed on said tool support (21), by being coaxial with said coring axis, and, on the other hand, to permit linear guiding of said surgical tool (22) during the movement of the latter towards the outside of the coring device.

Description

Dispositif de carottage et ensemble de carottage et d'introduction comprenant un tel dispositif ARRIERE-PLAN DE L'INVENTION Dornaine de !'invention La presente invention concerne un dispositif de carottage pour realiser 5 une ouverture dans une paroi tissulaire, notarnrnent en vue de la pose d'une pornpe cardiaque sur un cœur battant.Coring device and coring and introduction assembly comprising such a device BACKGROUND OF THE INVENTION Origin of the invention The present invention relates to a coring device for making an opening in a tissue wall, particularly for the purpose of placing a cardiac probe on a beating heart. Elle concerne egalernent un ensemble pour le carottage d'une paroi d'un cœur battant et !'introduction d'une portion d'un dispositif d'ancrage d'une pornpe cardiaque au travers de l'ouverture realisee par 10 carottage.It also concerns an assembly for the coring of a wall of a beating heart and the introduction of a portion of an anchoring device of a cardiac pump through the opening made by coring. Arriere-plan technologique L'insuffisance cardiaque (IC), est un etat pathologique dans lequel le cœur d'un patient presente une incapacite a f ournir un debit sanguin necessaire aux besoins rnetaboliques de l'organisrne. 15 Il est connu pour traiter l'insuffisance cardiaque d'irnplanter un dispositif d'assistance ventriculaire (DAV), qui est une pornpe cardiaque artificielle.Technological Background: Heart failure (HF) is a pathological condition in which a patient's heart is unable to provide sufficient blood flow to meet the body's metabolic needs. It is known that treating heart failure involves implanting a ventricular assist device (VAD), which is an artificial heart pump. Cette pornpe rnecanique ne rernplace pas le cC£ur qui continue a fonctionner, rnais apporte une aide au ventricule affaibli afin d'accroitre 20 le debit sanguin de f ac;:on adaptee aux be so ins de l'individu.This mechanical pump does not replace the heart which continues to function, but provides assistance to the weakened ventricle in order to increase blood flow in a manner adapted to the individual's needs. Cette assistance peut etre ternporaire dans l'attente d'un greffon disponible pour realiser une transplantation cardiaque.This assistance can be temporary while waiting for a donor heart to become available for a heart transplant. Cependant, on observe une proportion significative de patients qui ne recevront pas un tel greff on, soit parce qu'ils ne peuvent etre 25 candidats a une telle transplantation, par exernple en raison d'une 2 insuffisance cardiaque severe, soit parce qu'aucun greffon adapte n'est disponible pour ces patients.However, a significant proportion of patients will not receive such a transplant, either because they cannot be candidates for such a transplant, for example due to severe heart failure, or because no suitable graft is available for these patients. Dans ce cas, l'assistance ventriculaire est utilisee en destination, c'est-a-dire que la pompe cardiaque artificielle est implantee a long 5 terme.In this case, ventricular assistance is used at the destination, that is to say that the artificial heart pump is implanted long term. Ces pompes cardiaques font done l'objet d'intenses recherches visant a ameliorer la survie et la qualite de vie des patients presentant une insuffisance cardiaque.These cardiac pumps are therefore the subject of intense research aimed at improving the survival and quality of life of patients with heart failure. De nombreuses avancees ont ete realisees ces dernieres annees et 10 on connait aujourd'hui des dispositifs d'assistance ventriculaire plus compacts, silencieux et presentant une duree de service accrue.Many advances have been made in recent years and today we know of ventricular assist devices that are more compact, quieter and have an increased service life. Les pompes cardiaques implantables de l'etat de l'art sont ainsi typiquement equipees d'un moteur electrique integre pour assurer leur f onctionnement, la vitesse de rotation de la pompe f ournissant la force 15 necessaire pour faire circuler le sang depuis le ventricule aff aibli vers la circulation corporelle.State-of-the-art implantable heart pumps are thus typically equipped with an integrated electric motor to ensure their operation, the rotational speed of the pump providing the force 15 necessary to circulate blood from the weakened ventricle to the body circulation. On connait des systemes d'implantation de telles pompes dans une ouverture d'une paroi ventriculaire.Systems for implanting such pumps in an opening of a ventricular wall are known. Ces systemes d'implantation comprennent generalement une 20 portion tubulaire aux extremites de laquelle sont places, ou formes, des collerettes destinees a etre plaquees chacune contre une face opposee de la paroi ventriculaire apres introduction de la portion tubulaire dans une ouverture realisee dans cette paroi ventriculaire avec un dispositif de carottage. 25 Ces collerettes permettent ainsi de maintenir en position cette portion tubulaire creuse, laquelle definit alors un conduit ouvert traversant la paroi ventriculaire.These implantation systems generally comprise a tubular portion at the ends of which flanges are placed or formed. These flanges are designed to be pressed against opposite faces of the ventricular wall after the tubular portion is inserted into an opening made in the ventricular wall using a coring device. These flanges thus hold the hollow tubular portion in position, defining an open conduit through the ventricular wall. A l'extremite, placee a l'exterieur du CC£Ur, de cette portion tubulaire, est introduite une pompe aspirative qui une fois installee, 30 assure le renvoi du sang present dans le ventricule vers la circulation corporelle.At the end, placed outside the heart, of this tubular portion, is introduced a suction pump which, once installed, ensures the return of the blood present in the ventricle to the body circulation. Bien que representant un progres certain pour la qualite de vie d'un patient souffrant d'insuffisance cardiaque, de nombreux inconvenients sont encore constates. 35 Notamment, la realisation de cette ouverture sur un cC£ur battant pour minimiser les eff ets secondaires de l'intervention sur le patient peut entrainer des pertes de sang importantes durant l'implantation de la pompe cardiaque. 3 Une grande dexterite et une rapidite d'action des praticiens sont en consequence, des facteurs importants de reussite, ce qui est source de stress pour l'equipe realisant l'intervention.Although representing a definite improvement in the quality of life for patients with heart failure, numerous drawbacks are still observed. In particular, performing this incision on a beating heart to minimize the side effects of the procedure on the patient can lead to significant blood loss during the implantation of the heart pump. Consequently, the practitioners' high level of dexterity and rapid action are crucial factors for success, which is a source of stress for the team performing the procedure. De plus, les dimensions des collerettes etant reduites pour 5 faciliter leur passage au travers de l'ouverture realisee dans la paroi ventriculaire, la tenue mecanique du systeme d'implantation est limitee.Furthermore, as the dimensions of the flanges are reduced to facilitate their passage through the opening made in the ventricular wall, the mechanical strength of the implantation system is limited. Il n'autorise pas, par exemple, l'application d'efforts importants sur celui-ci une fois en place sur la paroi ventriculaire.It does not allow, for example, the application of significant forces on it once it is in place on the ventricular wall. En outre, il est souhaitable que l'extremite d'ejection du sang de la 10 pompe soit centree sur la valve cardiaque pour assurer un flux de sang ejecte optimal.In addition, it is desirable that the blood ejection end of the 10th pump be centered on the heart valve to ensure optimal ejected blood flow. Le positionnement de l'ouverture dans la paroi ventriculaire participe al ors des performances re ell es de la pompe cardiaque dans l'ejection du sang dans l'aorte. 15 Or, on constate qu'en l'absence de reperes, cette ouverture n'est pas toujours bien positionnee au regard de la valve cardiaque.The positioning of the opening in the ventricular wall thus contributes to the actual performance of the heart pump in ejecting blood into the aorta. However, it is observed that, in the absence of reference points, this opening is not always correctly positioned with respect to the heart valve. Le flux de sang ejecte n'est ainsi pas ideal.The ejected blood flow is therefore not ideal. Il existe done un besoin pressant pour un dispositif de carottage dont la conception originale surmonte les inconvenients decrits ci- 20 dessus.There is therefore an urgent need for a coring device whose original design overcomes the disadvantages described above. Objet de l'invention La presente invention vise a pallier les inconvenients de l' art anterieur et a repondre aux contraintes ci-dessus enoncees en proposant un dispositif de carottage d'une paroi tissulaire, simple dans sa 25 conception et dans son mode operatoire, fiable et d'un maniement particulierement aise pour un praticien.Object of the invention The present invention aims to overcome the disadvantages of the prior art and to meet the constraints stated above by proposing a device for coring a tissue wall, simple in its design and in its operating method, reliable and particularly easy to handle for a practitioner. Un autre objet de la presente invention est un tel dispositif de carottage offrant plusieurs f onctions et, notamment, etant configure pour recevoir, supporter et un assurer un centrage d'un outil 30 d'assistance a la pose d'une partie de dispositif d'ancrage par rapport a l'ouverture realisee par carottage.Another object of the present invention is such a coring device offering several functions and, in particular, being configured to receive, support and ensure centering of a tool 30 for assisting in the installation of a part of an anchoring device relative to the opening made by coring. Encore un objet de la presente invention est un tel dispositif de carottage permettant d'orienter la tete de carottage lors de la realisation de l'ouverture dans la paroi tissulaire pour assurer un positionnement 35 optimal de l'ouverture realisee dans la paroi tissulaire au regard de la valve cardiaque.Another object of the present invention is such a coring device allowing the coring head to be oriented during the making of the opening in the tissue wall to ensure optimal positioning of the opening made in the tissue wall with regard to the heart valve. La presente invention vise egalement un ensemble pour le carottage d'une paroi d'un cC£ur battant et l'introduction d'une portion 4 d'un dispositif d'ancrage d'une pompe cardiaque au travers de l'ouverture realisee par carottage, assurant une pose facilitee de cette portion de dispositif d'ancrage et autorisant, en consequence, une maximisation de ses dimensions. 5 Un autre objet de la presente invention est un tel ensemble limitant les risques de perte de sang pour le patient.The present invention also relates to an assembly for coring a wall of a beating heart and introducing a portion 4 of a cardiac pump anchoring device through the opening created by coring, ensuring easier placement of this portion of the anchoring device and consequently allowing for a maximization of its dimensions. Another object of the present invention is such an assembly limiting the risk of blood loss for the patient. BREVE DESCRIPTION DE L'INVENTION A cet eff et, l'invention concerne un dispositif de carottage pour realiser une ouverture dans une paroi tissulaire, comprenant : 10 - un corps ayant un axe longitudinal, ledit corps ayant une extremite proximale et une extremite distale, ledit corps comportant un logement interne, - une tete de carottage comportant une lame de transsection, cette tete etant mobile entre une position de repos et une position 15 actionnee, ladite tete de carottage ayant un axe de carottage, - un mecanisme d'actionnement pour deplacer ladite tete entre lesdites positions, ledit mecanisme comportant une tige d'actionnement a une extremite de laquelle est placee ladite tete mobile, et - l'extremite distale dudit corps forme un support d'outil 20 chirurgical, ou accessoire chirurgical, ce support d'outil etant configure pour '' d'une part, recevoir par emboitement un outil chirurgical creux et supporter cet outil, cet outil chirurgical entourant alors l'extremite distale dudit corps lorsqu'il est place sur ledit support d'outil, en etant 25 coaxial avec ledit axe de carottage, et '' d'autre part, permettre un guidage lineaire, ou sensiblement lineaire, dudit outil chirurgical lors de son deplacement vers l'exterieur du dispositif de carottage.BRIEF DESCRIPTION OF THE INVENTION To this end, the invention relates to a coring device for creating an opening in a tissue wall, comprising: 10 - a body having a longitudinal axis, said body having a proximal end and a distal end, said body having an internal housing, - a coring head comprising a transecting blade, this head being movable between a rest position and an actuated position, said coring head having a coring axis, - an actuation mechanism for moving said head between said positions, said mechanism comprising an actuating rod at one end of which said movable head is placed, and - the distal end of said body forms a support for a surgical tool, or surgical accessory, this tool support being configured to, on the one hand, receive by fitting a hollow surgical tool and support this tool, this surgical tool then surrounding the end distal to said body when placed on said tool support, being 25 coaxial with said coring axis, and on the other hand, allow linear, or substantially linear, guidance of said surgical tool during its movement outwards from the coring device. De maniere avantageuse, un tel dispositif de carottage permet non 30 seulement de realiser une ouverture dans une paroi tissulaire mais egalement d'introduire dans l'ouverture realisee, l'extremite distale d'un outil chirurgical, par exemple un outil d' assistance a la pose d'une partie de dispositif d'ancrage, ce qui confere un gain de temps, un confort accru pour l'equipe chirurgicale et une securite renforcee pour le 35 patient.Advantageously, such a coring device allows not only for an opening to be made in a tissue wall but also for the distal end of a surgical tool to be introduced into the opening made, for example a tool to assist in the placement of part of an anchoring device, which confers a saving of time, increased comfort for the surgical team and enhanced safety for the patient. Il n'est en effet pas necessaire qu'un praticien, autre que celui ayant realise l'ouverture, intervienne rapidement apres realisation de celle-ci pour y introduire l'outil ou accessoire chirurgical et il n'y a aucun changement de materiel operatoire.Indeed, it is not necessary for a practitioner, other than the one who performed the opening, to intervene quickly after it has been made to introduce the surgical tool or accessory, and there is no change of operating equipment. Un tel dispositif permet egalement d'introduire cet outil chirurgical dans l'ouverture realisee, car la configuration de ce support 5 d'outil assure un alignement, ou une correspondance, de cette ouverture et de l'extremite distale de l'outil chirurgical, laquelle est configuree pour passer au travers de cette ouverture.Such a device also allows this surgical tool to be introduced into the opening made, because the configuration of this tool support 5 ensures an alignment, or correspondence, of this opening and the distal end of the surgical tool, which is configured to pass through this opening. Un tel dispositif de carottage est particulierement utile pour realiser une ouverture dans une paroi ventriculaire d'un cC£ur battant en 10 vue de la pose et de l'assemblage d'une bague d'ancrage, encore connue sous le nom de dispositif d'ancrage ou de fixation, d'une pompe cardiaque dans cette ouverture.Such a coring device is particularly useful for making an opening in a ventricular wall of a beating heart for the purpose of fitting and assembling an anchor ring, also known as an anchoring or fixing device, of a cardiac pump in that opening. Une telle bague d' ancrage comprend typiquement une partie de bague comportant un corps creux a l'extremite duquel est place une 15 membrane auto-expansible entre une premiere configuration, dite deformee, dans laquelle elle presente une forme tubulaire, ou essentiellement tubulaire, et une seconde configuration, dite initiale, dans laquelle elle definit une bride, ou collerette, s'etendant radialement, ou sensiblement radialement, a partir dudit corps creux, 20 cette bride etant destinee a venir en aboutement contre une face interieure de ladite paroi ventriculaire du cC£ur battant.Such an anchoring ring typically comprises a ring portion having a hollow body at the end of which is placed a 15 self-expanding membrane between a first configuration, called deformed, in which it has a tubular, or essentially tubular, shape, and a second configuration, called initial, in which it defines a flange, or collar, extending radially, or substantially radially, from said hollow body, 20 this flange being intended to come into contact with an inner face of said ventricular wall of the beating heart. L'outil chirurgical est alors avantageusement un corps creux de forme generale cylindrique configure pour etre rec;:u dans l'ouverture realisee dans la paroi ventriculaire et maintenir ouverte cette ouverture dans ses 25 dimensions maximales pour faciliter l'introduction d'au moins la membrane auto-expansible dans la chambre ventriculaire.The surgical tool is then advantageously a hollow body of general cylindrical shape configured to be inserted into the opening made in the ventricular wall and to keep this opening open in its maximum 25 dimensions to facilitate the introduction of at least the self-expanding membrane into the ventricular chamber. Dans diff erents modes de realisation particuliers de ce dispositif, chacun ayant ses avantages particuliers et susceptibles de nombreuses combinaisons techniques possibles: 30 - ce dispositif de carottage comporte une lumiere s'etendant a travers au moins l'extremite proximale dudit corps, ladite tige d'actionnement et ladite tete de carottage pour le passage d'un element de guidage souple.In different particular embodiments of this device, each having its particular advantages and susceptible to many possible technical combinations: 30 - this coring device includes a light extending through at least the proximal end of said body, said actuating rod and said coring head for the passage of a flexible guiding element. La mise en C£uvre d'un element de guidage souple tel qu'un cable de 35 guidage, passant au travers de la paroi ventriculaire et de la valve cardiaque correspondante, par exemple la valve aortique, permet d'orienter l'ouverture realisee dans la paroi ventriculaire sur cette valve cardiaque. 6 De maniere avantageuse, une telle orientation assure ab initio un centrage optimal du corps de pompe sur cette valve cardiaque, et done de bonne performance en matiere d'ejection du sang au travers de la valve cardiaque. 5 De preference, cette lumiere supporte un tel element de guidage souple. - ledit support d'outil comporte une paroi peripherique externe qui est tubulaire et de diametre egal ou sensiblement egal au diametre de ladite lame de transsection.The implementation of a flexible guide element, such as a 35 mm guide cable, passing through the ventricular wall and the corresponding heart valve, for example the aortic valve, allows the opening made in the ventricular wall to be oriented towards this heart valve. Advantageously, such an orientation ensures from the outset optimal centering of the pump body on this heart valve, and therefore good performance in terms of blood ejection through the heart valve. Preferably, this lumen supports such a flexible guide element. The tool support has an external peripheral wall that is tubular and has a diameter equal to or substantially equal to the diameter of the transection blade. On entend ici par « sensiblement egal » que ce diametre peut varier de 10 quelques pourcents par rapport au diametre de l'ouverture realisee dans la paroi ventriculaire.Here, "approximately equal" means that this diameter may vary by 10 to a few percent from the diameter of the opening made in the ventricular wall. L'outil chirurgical creux est alors au moins en partie de forme tubulaire ou sensiblement tubulaire, en presentant un diametre interieur egal ou sensiblement egal au diametre de ladite lame de transsection de sorte 15 que cet outil chirurgical peut coulisser le long de ladite tete mobile lorsqu'il est introduit sur le, ou sortie du, support d'outil. - ladite paroi tissulaire etant une paroi d'un cC£ur battant destine a recevoir un dispositif d' ancrage d'une pompe cardiaque comprenant une bride, ou collerette, destinee a etre plaquee contre la surface 20 exterieure de ladite paroi du cC£ur battant, la longueur dudit support d'outil est au moins egale a la somme de l'epaisseur de ladite paroi tissulaire et de l'epaisseur, ou dimension longitudinale, de ladite bride, ou collerette, destinee a etre placee contre la surface exterieure de la paroi dudit cC£ur. 25 - le dispositif comporte une partie d'un moyen detrompeur, ledit outil chirurgical etant destine a porter la partie complementaire de ce moyen detrompeur, pour orienter ledit outil chirurgical sur ledit support d'outil.The hollow surgical tool is then at least partly tubular or substantially tubular in shape, having an internal diameter equal to or substantially equal to the diameter of said transection blade so that this surgical tool can slide along said movable head when it is inserted onto, or removed from, the tool holder. - said tissue wall being a wall of a beating heart intended to receive an anchoring device for a cardiac pump comprising a flange, or collar, intended to be pressed against the outer surface of said wall of the beating heart, the length of said tool holder is at least equal to the sum of the thickness of said tissue wall and the thickness, or longitudinal dimension, of said flange, or collar, intended to be placed against the outer surface of the wall of said heart. 25 - the device includes part of a de-entrapment means, said surgical tool being intended to carry the complementary part of this de-entrapment means, to orient said surgical tool on said tool support. A titre purement illustratif, le dispositif peut comport er un ergot 30 destine a etre rec;:u dans un logement correspondant place sur la tranche de l'extremite proximale de l'outil chirurgical. - le dispositif comporte une butee pour stopper le deplacement dudit outil chirurgical le long de l'axe longitudinal dudit corps et en direction de ladite extremite proximale afin que l'outil chirurgical reste 35 positionne sur ledit support d'outil. - ledit corps comporte deux parties de corps emboitees l'une dans l'autre, une premiere partie de corps etant mobile en translation par rapport a l'autre partie de corps de sorte que son deplacement dans et 7 hors de l'autre partie de corps provoque le deplacement en translation de ladite tete de carottage.For illustrative purposes only, the device may include a lug 30 intended to be received in a corresponding housing located on the edge of the proximal end of the surgical tool. - The device includes a stop to prevent the movement of said surgical tool along the longitudinal axis of said body and in the direction of said proximal end so that the surgical tool remains 35 positioned on said tool holder. - Said body comprises two body parts nested one inside the other, a first body part being movable in translation relative to the other body part such that its movement in and out of the other body part causes the translational movement of said coring head. De preference, chaque partie de corps comporte une poignee de prehension.Preferably, each body part has a gripping handle. De maniere avantageuse, ledit mecanisme d'actionnement 5 comprend un chariot de guidage portant ladite tige d'actionnement et rec;:u dans ledit logement interne, ce logement etant configure pour former un rail de guidage en translation dudit chariot de guidage, ledit chariot de guidage etant solidaire de ladite premiere partie de corps mobile en translation. 10 La presente invention concerne egalement un ensemble de pose d'un outil ou d'un accessoire chirurgical dans une paroi tissulaire.Advantageously, said actuation mechanism 5 comprises a guide carriage carrying said actuating rod and housed in said internal housing, this housing being configured to form a guide rail for the translation of said guide carriage, said guide carriage being integral with said first part of the translationally movable body. 10 The present invention also relates to an assembly for positioning a surgical tool or accessory within a tissue wall. Selon l'invention, cet ensemble comprend : un dispositif de carottage tel que decrit precedemment, et un outil ou accessoire chirurgical creux configure pour etre 15 emboite sur l'extremite distale dudit dispositif de carottage tout en laissant ladite tete de carottage degagee.According to the invention, this assembly comprises: a coring device as described above, and a hollow surgical tool or accessory configured to be fitted onto the distal end of said coring device while leaving said coring head exposed. Selon un mode de realisation de l'ensemble de l'invention, ledit outil ou accessoire chirurgical comporte a son extremite distale, une portion tubulaire ou sensiblement tubulaire configuree pour maintenir 20 la forme et le diametre de l'ouverture realisee par carottage dans la paroi tissulaire.According to one embodiment of the invention as a whole, said surgical tool or accessory comprises at its distal end, a tubular or substantially tubular portion configured to maintain the shape and diameter of the opening made by coring in the tissue wall. De preference, cette portion tubulaire ou sensiblement tubulaire a une longueur au moins egale a l'epaisseur de la paroi tissulaire.Preferably, this tubular or substantially tubular portion has a length at least equal to the thickness of the tissue wall. Selon un autre mode de realisation de l'ensemble de l'invention, le 25 corps du dispositif de carottage comportant une partie d'un moyen detrompeur, cet outil ou accessoire chirurgical comporte une partie complementaire de ce moyen detrompeur, pour orienter ledit outil ou accessoire chirurgical sur ledit support d'outil.According to another embodiment of the invention as a whole, the 25 body of the coring device comprising a part of a de-entrapping means, this surgical tool or accessory comprises a complementary part of this de-entrapping means, to orient said surgical tool or accessory on said tool support. Selon encore un autre mode de realisation, ledit outil ou 30 accessoire chirurgical etant un outil d'assistance a la pose d'un dispositif d'ancrage d'une pompe cardiaque au travers d'une ouverture realisee par carottage dans la paroi d'un cC£ur, ledit outil d'assistance creux delimite un canal interne pour le passage dudit dispositif d'ancrage, dont le diametre est sensiblement egal au diametre de cette 35 ouverture.According to yet another embodiment, said tool or 30 surgical accessory being a tool for assisting in the placement of a cardiac pump anchoring device through an opening made by coring in the wall of a heart, said hollow assistance tool delimits an internal channel for the passage of said anchoring device, the diameter of which is substantially equal to the diameter of this 35 opening. De maniere avantageuse, ladite portion tubulaire ou sensiblement tubulaire de cet outil d' assistance a une longueur au moins egale a la somme de l'epaisseur de la paroi dudit cC£ur et de l'epaisseur, ou 8 dimension longitudinale, d'une bride, ou collerette, destinee a etre assemblee a la surface exterieure de la paroi dudit cC£ur.Advantageously, said tubular or substantially tubular portion of this assistance tool has a length at least equal to the sum of the thickness of the wall of said core and the thickness, or longitudinal dimension, of a flange, or collar, intended to be assembled to the outer surface of the wall of said core. De maniere pref erentielle, le corps du dispositif de carottage comportant une partie d'un moyen detrompeur, cet outil d'assistance 5 comporte une partie complementaire de ce moyen detrompeur, pour orienter ledit outil chirurgical sur ledit support d'outil selon une configuration predefinie.Preferably, the body of the coring device comprising a part of a de-enhancing means, this assistance tool 5 comprises a complementary part of this de-enhancing means, to orient said surgical tool on said tool support according to a predefined configuration. Par exemple, cet agencement predefini de l'outil chirurgical assure son orientation par rapport a une bride, ou collerette, assemblee contre la surface exterieure de la paroi dudit cC£ur. 10 De preference, cette bride, OU collerette, destinee a etre placee contre la surface exterieure de la paroi dudit cC£ur comprenant au moins une saillie, ou teton, placee sur sa face laterale, ledit outil chirurgical comporte pour chaque saillie, une rainure debouchant destinee a recevoir ladite saillie, ou teton, correspondante, ladite rainure etant 15 configuree pour assurer par rotation dudit outil chirurgical autour de l'axe de carottage, un verrouillage dudit outil chirurgical sur ladite bride, ou collerette Selon encore un autre mode de realisation de l'ensemble de l'invention, cet ensemble comporte un dispositif de poussee allonge comportant a 20 son extremite distale une tete support d'une partie de dispositif d'ancrage comportant ladite bride, ou collerette, dans sa configuration deformee, ladite tete presentant un moyen d'assemblage tel qu'un filetage, avec ladite partie de dispositif d'ancrage et cette derniere comprenant un moyen d'assemblage complementaire pour assurer 25 l'assemblage de ces elements, ledit dispositif de poussee allonge etant configure pour traverser ledit outil chirurgical de sorte que ladite bride, ou collerette de la bague d'ancrage puisse traverser l'ouverture realisee dans la paroi dudit cC£ur.For example, this predefined arrangement of the surgical tool ensures its orientation relative to a flange, or collar, assembled against the outer surface of the wall of said heart. 10 Preferably, this flange, or collar, intended to be placed against the outer surface of the wall of said heart, comprising at least one projection, or stud, placed on its lateral face, said surgical tool having, for each projection, a through groove intended to receive said corresponding projection, or stud, said groove being 15 configured to ensure, by rotation of said surgical tool around the coring axis, a locking of said surgical tool onto said flange, or collar. According to yet another embodiment of the whole of the invention, this assembly comprises an elongated thrusting device having at its distal end 20 a head supporting a part of an anchoring device comprising said flange, or collar, in its deformed configuration, said head having an assembly means such as a thread, with said part of the anchoring device and the latter comprising a complementary assembly means to ensure 25 the assembly of these elements, said device of extended thrust being configured to pass through said surgical tool so that said flange, or collar of the anchor ring can pass through the opening made in the wall of said heart. De preference, ce dispositif de poussee a la forme d'un tube ou d'une 30 tige comportant une lumiere pour recevoir l' element de guidage souple.Preferably, this pushing device has the shape of a tube or a rod with a slot to receive the flexible guide element. BREVE DESCRIPTION DES DESSINS D'autres avantages, buts et caracteristiques particulieres de la presente invention ressortiront de la description qui va suivre, faite, dans un but explicatif et nullement limitatif, en regard des dessins annexes, dans 35 lesquels: - la Figure 1 represente schematiquement un dispositif de carottage pour realiser une ouverture dans une paroi ventriculaire d'un 9 cC£ur battant selon un mode de realisation particulier de la presente invention; - la Figure 2 montre le dispositif de carottage de la Fig. 1, un accessoire d'assistance a la pose d'une bague d'ancrage etant rec;:u a 5 l'extremite distale de ce dernier pour definir un ensemble de carottage et d'introduction d'une partie d'une bague d'ancrage d'un dispositif d'assistance ventriculaire ; - la Figure 3 est une vue partielle et elargie de l'ensemble illustre a la Fig. 2 montrant un moyen detrompeur pour orienter l'accessoire 10 d'assistance a la pose ; - la Figure 4 est une representation schematique de l'ensemble de la Fig. 2, la tete de carottage etant dans sa position actionnee pour son introduction dans un petit orifice, prealablement realise avec un outil coupant dans la paroi ventriculaire du cC£ur ; 15 - la Figure 5 est une vue en perspective et en coupe de l'ensemble de la Fig. 2 juste apres realisation de la decoupe dans la paroi ventriculaire ; - la Figure 6 est une vue partielle et de dessus de l' ensemble de la Fig. 2, lors de l'assemblage de l'accessoire d'assistance avec la bride 20 prealablement assemblee a la surface exterieure de ladite paroi ventriculaire, l'extremite distale de l'accessoire d'assistance etant alors inseree dans l'ouverture realisee ; - la Figure 7 est une vue en coupe longitudinale de l'ensemble de la Fig. 2 et de l'apex du cC£ur, le dispositif de carottage etant en cours de 25 retrait, l'extremite distale de l'accessoire d'assistance, inseree dans l'ouverture realisee, etant apparent ; - la Figure 8 est une vue en perspective de l'accessoire d'assistance de la Fig. 2 assemble a une bride solidaire de l'apex du cC£ur, une partie d'une bague d'ancrage comportant une bride dans sa configuration 30 deformee etant introduite dans cet accessoire d'assistance au moyen d'un dispositif de poussee ; - la Figure 9 est une vue en coupe longitudinale des elements illustres a la Fig. 8 ; - la Figure 10 est une vue en coupe longitudinale des elements 35 illustres a la Fig. 8, la bride dans sa configuration deformee etant introduite dans la chambre ventriculaire au moyen du dispositif de poussee; - la Figure 11 est une vue en coupe longitudinale des elements illustres a la Fig. 8, la bride etant dans sa configuration initiale pour definir une collerette, l'accessoire d'assistance a la pose ayant ete desassemble de la bride montee a la surface exterieure de la paroi 5 ventriculaire et etant en cours de retrait ; - la Figure 12 est une vue en perspective des elements illustres a la Fig. 8, l'accessoire d'assistance ayant ete retire, un joint d'etancheite et un ecrou etant engages sur le dispositif de poussee pour bloquer en position de la bague d'ancrage ; 10 - la Figure 13 est une vue en perspective de la bague d'ancrage de la Fig. 12 montee dans son ouverture et supportant une pompe cardiaque.BRIEF DESCRIPTION OF THE DRAWINGS Other advantages, purposes and particular features of the present invention will become apparent from the following description, given for explanatory purposes and in no way limiting, with reference to the accompanying drawings, in which: - Figure 1 schematically represents a coring device for making an opening in a ventricular wall of a beating heart according to a particular embodiment of the present invention; - Figure 2 shows the coring device of Fig. 1, an accessory for assisting the placement of an anchoring ring being attached to the distal end thereof to define a coring and insertion assembly for a portion of an anchoring ring of a ventricular assist device; - Figure 3 is a partial and enlarged view of the assembly illustrated in Fig. 2 showing a means of orienting the assistive device 10 during insertion; - Figure 4 is a schematic representation of the entire Fig. 2, with the core head in its actuated position for insertion into a small orifice, previously made with a cutting tool in the ventricular wall of the heart; 15 - Figure 5 is a perspective and cross-sectional view of the entire Fig. 2 just after the cut in the ventricular wall has been made; - Figure 6 is a partial and top view of the entire Fig. 2, during the assembly of the assistive device with the flange 20 previously assembled to the outer surface of said ventricular wall, the distal end of the assistive device then being inserted into the opening made; - Figure 7 is a longitudinal cross-sectional view of the entire Fig. 2 and the apex of the heart, with the coring device being withdrawn, the distal end of the assisting accessory, inserted into the opening made, being visible; - Figure 8 is a perspective view of the assisting accessory of Fig. 2 assembled to a flange attached to the apex of the heart, part of an anchoring ring having a flange in its deformed configuration being introduced into this assisting accessory by means of a pushing device; - Figure 9 is a longitudinal cross-sectional view of the elements illustrated in Fig. 8; - Figure 10 is a longitudinal cross-sectional view of the elements illustrated in Fig. 8, the flange in its deformed configuration being introduced into the ventricular chamber by means of the pushing device; - Figure 11 is a longitudinal cross-sectional view of the elements illustrated in Fig. 8, the flange being in its initial configuration to define a collar, the assistive device for placement having been disassembled from the flange mounted on the outer surface of the ventricular wall and being withdrawn; - Figure 12 is a perspective view of the elements illustrated in Fig. 8, the assistive device having been removed, a sealing gasket and a nut being engaged on the push device to lock the anchoring ring in position; - Figure 13 is a perspective view of the anchoring ring of Fig. 12 mounted in its opening and supporting a cardiac pump. DESCRIPTION DET AILLEE DE MODE DE REALISATION DE 15 L'INVENTION Tout d'abord, on note que les figures ne sont pas a l'echelle.DETAILED DESCRIPTION OF THE METHOD OF IMPROVEMENT OF THE INVENTION 15 First of all, it is noted that the figures are not to scale. Les Figures 1 a 7 montrent de maniere schematique un dispositif de carottage 10 pour realiser une ouverture dans la paroi ventriculaire d'un cC£ur battant, selon un mode de realisation particulier de la 20 presente invention.Figures 1 to 7 schematically show a coring device 10 for making an opening in the ventricular wall of a beating heart, according to a particular embodiment of the present invention. Ce dispositif de carottage 10 comporte deux parties de corps 11, 12 qui sont emboitees l'une dans l' autre de sorte qu'une de ces parties est montee en coulissement dans l'autre partie de corps.This coring device 10 comprises two body parts 11, 12 which are fitted one inside the other so that one of these parts is mounted to slide in the other body part. Ce dispositif presente une extremite proximale et une extremite distale. 25 Dans le contexte de la presente invention, le terme « proximal » signifie la position la plus proche du professionnel de sante, ou du praticien, tandis que le terme « distal » doit ici etre entendu comme signifiant le plus eloigne de ce professionnel.This device has a proximal end and a distal end. 25 In the context of the present invention, the term "proximal" means the position closest to the healthcare professional, or practitioner, while the term "distal" should be understood here as meaning the furthest from this professional. En d'autres termes, l'extremite distale d'une piece est l'extremite qui serait la premiere 30 engagee dans le cC£ur battant tandis que son extremite proximale serait la derniere extremite a y etre engagee.In other words, the distal end of a piece is the end that would be the first 30 engaged in the beating heart while its proximal end would be the last end to be engaged. Ce dispositif de carottage 10 comprend une tete de carottage 13 comportant une pointe ayant une f orme frustro-conique, a son extremite distale, pour faciliter son insertion au travers d'une incision 35 realisee avec un outil coupant tel qu'un scalpel, dans la paroi ventriculaire de ce cC£ur battant.This coring device 10 includes a coring head 13 having a point with a frustro-conical shape, at its distal end, to facilitate its insertion through an incision 35 made with a cutting tool such as a scalpel, in the ventricular wall of this beating heart. Cette tete 13 comporte egalement une lame de transsection 14 placee a son extremite proximale.This head 13 also includes a transection blade 14 placed at its proximal end. Cette lame de transsection 14 presente une section transverse droite de f orme 11 circulaire mais pourrait presenter d'autres formes appropriees telles qu'ovale.This transsection blade 14 has a right transverse section of circular shape 11 but could have other suitable shapes such as oval. Cette tete de carottage 13 est mobile entre une position de repos, dans laquelle la lame de transsection 14 est plaquee contre, ou est 5 placee a proximite de, l'extremite distale du corps principal du dispositif de carottage 10, et une position actionnee dans laquelle la lame de transsection 14 est placee a distance de l' extremite dis tale du corps principal du dispositif de carottage 10.This coring head 13 is movable between a rest position, in which the transect blade 14 is pressed against, or is placed near, the distal end of the main body of the coring device 10, and an actuated position in which the transect blade 14 is placed away from the distal end of the main body of the coring device 10. Plus precisement, cette tete de carottage 13 est actionnee par un 10 mecanisme d'actionnement comprenant une tige d'actionnement 15, a l'extremite de laquelle cette tete 13 est montee, cette tige 15 etant couplee a un logement interne du corps principal du dispositif de carottage 10.More precisely, this core drilling head 13 is actuated by an actuating mechanism 10 comprising an actuating rod 15, at the end of which this head 13 is mounted, this rod 15 being coupled to an internal housing of the main body of the core drilling device 10. Ce corps principal comporte ici deux parties 11, 12 de corps 15 emboitees l'une dans l'autre, une premiere partie de corps etant mobile en translation par rapport a l' autre partie de corps de sorte que son deplacement dans et hors de l'autre partie de corps provoque le deplacement en translation de ladite tete de carottage 13.This main body here comprises two parts 11, 12 of body 15 nested one inside the other, a first part of body being mobile in translation relative to the other part of body so that its displacement in and out of the other part of body causes the displacement in translation of said core head 13. Chaque partie de corps comporte une poignee 16, 17 de 20 prehension ayant un axe longitudinal Z.Each body part includes a grip 16, 17 of 20 having a longitudinal axis Z. Ces poignees 16, 17 sont ici arrangees de sorte que leur axe longitudinal est perpendiculaire a l'axe longitudinal defini par le corps du dispositif de carottage 10.These handles 16, 17 are arranged here so that their longitudinal axis is perpendicular to the longitudinal axis defined by the body of the coring device 10. Ainsi, le praticien peut tenir d'une premiere main, une poignee 16 d'une premiere partie 11 de corps tandis que son autre main tient la 25 poignee 17 de l'autre partie 12 de corps pour deplacer aisement ces deux parties de corps l'une par rapport a l' autre et ainsi provoquer le deplacement de la tete de carottage 13.Thus, the practitioner can hold in one hand, a handle 16 of a first part 11 of the body while his other hand holds the 25 handle 17 of the other part 12 of the body to easily move these two parts of the body relative to each other and thus cause the movement of the core drill head 13. Avantageusement, l'axe geometrique ou axe de carottage du dispositif de carottage 10 est celui de la tige d'actionnement 15 sur laquelle est 30 centree la tete de carottage 13.Advantageously, the geometric axis or core axis of the core drilling device 10 is that of the actuating rod 15 on which the core drilling head 13 is centered 30. Le mecanisme d' actionnement comprend egalement un chariot de guidage 18 supportant la tige d' actionnement 15 et rec;:u dans le logement interne 19 du corps principal.The actuation mechanism also includes a guide carriage 18 supporting the actuating rod 15 and rec;:u in the internal housing 19 of the main body. La tige d' actionnement 15 est avantageusement centree. 35 Le chariot de guidage 18 etant solidaire de la premiere partie de corps mobile en translation, ce logement interne 19 definit un rail de guidage en translation de ce chariot de guidage. 12 Une lumiere 20 s'etend a travers l'extremite proximale du corps principal du dispositif de carottage 10, la tige d'actionnement 15 et la tete de carottage 13 pour permettre le passage d'un guide 3 7.The actuating rod 15 is advantageously centered. 35 The guide carriage 18 being fixed to the first part of the moving body in translation, this internal housing 19 defines a guide rail for the translation of this guide carriage. 12 A slot 20 extends through the proximal end of the main body of the coring device 10, the actuating rod 15 and the coring head 13 to allow the passage of a guide 3 7. Ce guide 37 est destine au guidage, notamment l'orientation, de la tete de 5 carottage 13 lors de son approche de la paroi ventriculaire en vue de realiser une ouverture par carottage.This guide 37 is intended for the guidance, in particular the orientation, of the 5 core drill head 13 when it approaches the ventricular wall in order to perform an opening by core drilling. Plus precisement, ce guide 3 7 est destine a passer a tr avers la valve aortique pour guider le dispositif de carottage 13 et fixer ainsi l'orientation de l'ouverture a realiser par carottage par rapport a la 10 localisation anatomique de la valve aortique (ou de la valve pulmonaire si ce dispositif de carottage 13 est utilise pour le ventricule droit).More precisely, this guide 3 7 is intended to pass through the aortic valve to guide the coring device 13 and thus fix the orientation of the opening to be made by coring in relation to the 10 anatomical location of the aortic valve (or of the pulmonary valve if this coring device 13 is used for the right ventricle). De maniere avantageuse, l'extremite distale du corps principal du dispositif de carottage 10 forme egalement un support d'accessoire 21.Advantageously, the distal end of the main body of the coring device 10 also forms an accessory support 21. Ce support d'accessoire 21 comporte une paroi peripherique 15 externe tubulaire dont le diametre exterieur est egal au diametre de la lame de transsection 14.This accessory support 21 has an external tubular peripheral wall 15 whose external diameter is equal to the diameter of the transect blade 14. Un accessoire d' assistance 2 2 a la pose d'une partie d'une bague d'ancrage d'une pompe cardiaque, est rec;:u par emboitement sur ce support d'accessoire 21.An assistance accessory 2 2 a the installation of part of an anchoring ring of a heart pump, is received by fitting onto this accessory support 21. Cet accessoire d'assistance 22 est creux et 20 comporte un fourreau 23 s'etendant d'une portion intermediaire de celui-ci vers son extremite distale.This assistive accessory 22 is hollow and 20 has a sheath 23 extending from an intermediate portion of it towards its distal end. Comme represente sur la Fig. 5, tandis que la tete de carottage 13 est encore partiellement placee dans la chambre ventriculaire, le praticien peut introduire dans l'ouverture realisee dans la paroi 25 ventriculaire, une partie de l'accessoire d'assistance 22, notamment son f ourreau 2 3, en le deplac;:ant en translation sur le support d' accessoire 21, lequel assure un guidage lineaire.As shown in Fig. 5, while the core drill head 13 is still partially placed in the ventricular chamber, the practitioner can introduce into the opening made in the ventricular wall 25, part of the assist accessory 22, in particular its sheath 23, by moving it in translation on the accessory support 21, which ensures linear guidance. Cet outil d' assistance etant realise dans un materiau rigide tel qu'en titane, son fourreau 23 maintient l'ouverture dans son extension 30 maximale et delimite par son canal interieur, un chemin pour le libre passage d'une partie de bague d'ancrage comprenant une portion tubulaire et a l'extremite distale de cette derniere, une membrane autoexpansible 24 dans sa premiere configuration, dite def ormee, dans laquelle celle-ci presente une forme tubulaire, ou essentiellement 35 tubulaire.This assistance tool being made of a rigid material such as titanium, its sheath 23 maintains the opening in its maximum extension 30 and delimited by its inner channel, a path for the free passage of a part of the anchoring ring comprising a tubular portion and at the distal end of the latter, a self-expanding membrane 24 in its first configuration, called deformed, in which it has a tubular shape, or essentially 35 tubular. Cette membrane auto-expansible 24 est par exemple, realisee en nitinol.This self-expanding membrane 24 is, for example, made of nitinol. Une autre bride, ou seconde bride 25, de la bague d'ancrage ayant ete prealablement assemblee, par exemple par suture, avec la surf ace 13 exterieure de la paroi ventriculaire, l'accessoire d'assistance 22 cmnporte a son extremite proximale, une tete de liaison 26 cylindrique creuse formant saillie du fourreau 23 en entourant en partie ce dernier.Another flange, or second flange 25, of the anchoring ring having been previously assembled, for example by suture, with the outer surface 13 of the ventricular wall, the assistance accessory 22 carries at its proximal end, a hollow cylindrical connecting head 26 forming a projection of the sheath 23 by partially surrounding the latter. Cette tete de liaison 26 est destinee a etre assemblee a cette seconde 5 bride 25 pour realiser un couplage amovible de l'accessoire avec l'ensemble seconde bride/apex du cC£ur.This connecting head 26 is intended to be assembled to this second flange 25 to achieve a removable coupling of the accessory with the second flange/apex assembly of the heart. Cette seconde bride 25 est par exemple realisee en dacron.This second flange 25 is for example made of dacron. Comme illustre a la Figure 6, cette seconde bride 2 5 etant plaquee contre la surface exterieure de la paroi ventriculaire, elle comprend au 10 moins un teton 3 5 positionne sur sa paroi laterale, la tete de liaison 26 de l'accessoire d'assistance 22 comportant pour chaque teton 35, une rainure 3 6 de couplage placee sur sa tranche et configuree pour recevoir ce teton correspondant.As illustrated in Figure 6, this second flange 2 5 being pressed against the outer surface of the ventricular wall, it includes at least one nipple 3 5 positioned on its lateral wall, the connecting head 26 of the assisting accessory 22 having for each nipple 35, a coupling groove 3 6 placed on its edge and configured to receive this corresponding nipple. Plus precisement, chaque rainure 36 debouche a l'extremite distale de cette tete de liaison 26 de sorte que cette derniere 15 recouvrant partiellement la seconde bride 25 de la bague d'ancrage, chaque teton 3 5 est engage dans sa rainure correspondante.More precisely, each groove 36 opens at the distal end of this connecting head 26 so that the latter 15 partially covers the second flange 25 of the anchoring ring, each stud 3 5 is engaged in its corresponding groove. Chaque rainure 36 presente en outre une meme forme incurvee de sorte que, par rotation de l'accessoire d'assistance 22 autour de l'axe de carottage, un verrouillage de cet accessoire d'assistance 22 sur la 20 seconde bride 2 5 est obtenu.Each groove 36 also has the same curved shape so that, by rotating the assistance accessory 22 around the core drilling axis, a locking of this assistance accessory 22 on the second flange 25 is obtained. Cet accessoire d'assistance 22 comporte egalement un element d'etancheite pour assurer l'etancheite de l'assemblage tete de liaison 26/seconde bride 25 lorsque le ou les tetons ont ete amenes jusqu'au fond de leur rainure correspondante sur la tete de liaison 26. 25 La Figure 7 est une vue en coupe du dispositif de carottage, la tete de carottage etant placee en retrait de l'ouverture realisee dans la paroi ventriculaire, et de maniere plus precise, etant placee dans le logement interne du corps du dispositif de carottage.This assistance accessory 22 also includes a sealing element to ensure the sealing of the connecting head 26/second flange 25 assembly when the stud(s) have been brought to the bottom of their corresponding groove on the connecting head 26. Figure 7 is a cross-sectional view of the coring device, the coring head being placed behind the opening made in the ventricular wall, and more precisely, being placed in the internal housing of the body of the coring device. Le fourreau 2 3 de l'accessoire d'assistance 22 a ete introduit au travers de cette ouverture 30 dans la chambre ventriculaire et la tete de liaison 26 est assemblee a la seconde bride 25 de la bague d'ancrage externe au cC£ur.The sleeve 2 3 of the assistive accessory 22 was introduced through this opening 30 into the ventricular chamber and the connecting head 26 is assembled to the second flange 25 of the external anchoring ring to the heart. Le praticien peut des lors retirer le dispositif de carottage 10 sans risquer un deplacement de l'accessoire d'assistance 22 de l'ouverture realisee dans la paroi ventriculaire. 35 Le fourreau 23 de cet accessoire d'assistance 22 permet de maintenir cette ouverture entierement accessible pour assurer le libre passage de la partie de bague d'ancrage comprenant une portion 14 tubulaire 27 et a l'extremite distale de cette derniere, une membrane auto-expansible 24 dans sa premiere configuration.The practitioner can then remove the coring device 10 without risking displacement of the assistive device 22 from the opening made in the ventricular wall. 35 The sleeve 23 of this assistive device 22 keeps this opening fully accessible to ensure free passage of the anchoring ring portion comprising a tubular portion 14 27 and, at the distal end of this portion, a self-expanding membrane 24 in its initial configuration. Ce re trait du dispositif de carottage 10 entraine la premiere perte d'etancheite au niveau de la paroi ventriculaire de sorte que le praticien 5 doit rapidement relier a cet accessoire creux, a un dispositif de poussee 28 portant cette partie de bague d'ancrage pour l'introduction de son extremite dans la chambre ventriculaire 29.This withdrawal of the coring device 10 causes the first loss of sealing at the level of the ventricular wall so that the practitioner 5 must quickly connect to this hollow accessory, to a pushing device 28 carrying this part of the anchoring ring for the introduction of its end into the ventricular chamber 29. Apres avoir introduit la membrane auto-expansible 24 dans cette chambre ventriculaire, et cette derniere ayant adopte sa seconde 10 configuration dans laquelle elle definit une bride, ou collerette, s'etendant radialement a partir de la portion tubulaire 27, le praticien recule le dispositif de poussee 28 pour venir plaquer cette bride contre la face interieure de la paroi ventriculaire 29 du cC£ur battant.After introducing the self-expanding membrane 24 into this ventricular chamber, and the latter having adopted its second 10 configuration in which it defines a flange, or collar, extending radially from the tubular portion 27, the practitioner retracts the pushing device 28 to press this flange against the inner face of the ventricular wall 29 of the beating heart. Ainsi, les deux brides 24, 25 etant plaquees de part et d'autre 15 contre cette paroi ventriculaire 29, le praticien n'a plus qu'a engager un element d'etancheite 30 tel qu'un joint d'etancheite torique et un moyen de serrage 31 sur le dispositif de poussee 28 et faire coulisser ces derniers le long de la surface externe de ce dispositif de poussee 28 pour venir verrouiller en position la bague d'ancrage.Thus, with the two flanges 24, 25 pressed against this ventricular wall 29 on either side 15, the practitioner only has to engage a sealing element 30 such as an O-ring seal and a clamping means 31 on the push device 28 and slide these along the external surface of this push device 28 to lock the anchoring ring in position. Ce moyen de 20 serrage 31 vient finaliser l'assemblage de la bague d'ancrage en bloquant tout deplacement des brides 24, 25 l'une par rapport a l'autre.This means of clamping 20 31 finalizes the assembly of the anchor ring by blocking any movement of the flanges 24, 25 relative to each other. On obtient ainsi une liaison mecanique resistante de la bague d' ancrage et de l'apex du CC£Ur ainsi que de son etancheite.This results in a strong mechanical connection between the anchoring ring and the apex of the CC£Ur, as well as its sealing. Ce moyen de serrage 31 peut etre un ecrou si la surface externe 25 de la portion tubulaire 2 7, ou corps creux, comporte un filetage ou comme illustre a la Figure 13, une bague de serrage.This clamping means 31 can be a nut if the external surface 25 of the tubular portion 27, or hollow body, has a thread or, as illustrated in Figure 13, a clamping ring. Cette derniere vient presser l' element d' etancheite 3 0 contre la seconde bride 2 5 assemblee a la surface exterieure de la paroi ventriculaire 29.The latter presses the sealing element 3 0 against the second flange 2 5 assembled to the outer surface of the ventricular wall 29. Avantageusement, l'ensemble portion tubulaire 27 /membrane 30 auto-expansible 24 comprend un deuxieme element d'etancheite comprenant une valve anti-reflux (non representee) placee dans le canal interne delimite par cette portion tubulaire 27. A titre d'exemple, il s'agit d'une membrane auto reparatrice, dite encore membrane autoseal, integree dans le canal interne delimite par la portion tubulaire 27, 35 ou corps creux, de la bague d'ancrage.Advantageously, the tubular portion 27 / self-expanding membrane 30 24 assembly includes a second sealing element comprising an anti-reflux valve (not shown) placed in the internal channel delimited by this tubular portion 27. As an example, it is a self-repairing membrane, also called an autoseal membrane, integrated into the internal channel delimited by the tubular portion 27, 35 or hollow body, of the anchoring ring. Cette valve anti-reflux empeche toute fuite de sang par ce canal interne.This anti-reflux valve prevents any blood from leaking through this internal channel. Elle permet ainsi, apres retrait du dispositif de carottage, de retablir l'etancheite par la pose du dispositif d'ancrage sur le cC£ur.This allows, after removal of the coring device, for the sealing to be restored by placing the anchoring device on the core. A titre purernent illustratif, cette valve anti-reflux est en silicone Cette bague de serrage 31 cornporte sur sa paroi laterale un orifice 32 recevant une fixation 33 pour verrouiller en position une pornpe cardiaque 34 introduite dans le canal interne delirnite par le s corps creux de la bague d'ancrage, l'extrernite distale de cette pornpe cardiaque 34 etant engagee dans charnbre ventriculaire du cC£ur battant.For illustrative purposes, this anti-reflux valve is made of silicone. This clamping ring 31 has on its lateral wall an orifice 32 receiving a fixing 33 to lock in position a cardiac probe 34 introduced into the internal channel delineated by the hollow body of the anchoring ring, the distal end of this cardiac probe 34 being engaged in the ventricular cavity of the beating heart. Lors du retrait de la pornpe cardiaque 34 du cC£ur, par exernple pour une rnanutention, rec;:ue dans la portion tubulaire 27, ce second element d'etancheite se referrne et redevient etanche.During the withdrawal of the cardiac tube 34 from the heart, for example for a re-absorption, received in the tubular portion 27, this second sealing element closes and becomes sealed again.

Claims

16 REVENDICATIONS 1. Dispositif de carottage pour realiser une ouverture dans une paroi tissulaire, comprenant: un corps ayant un axe longitudinal, ledit corps ayant une extremite 5 proximale et une extremite distale, ledit corps comportant un logement inteme, une tete de carottage comportant une lame de transsection, cette tete etant mobile entre une position de repos et une position actionnee, ladite tete de carottage ayant une surface exteme entierement lisse et ladite lame de transsection etant un element de coupe annulaire monte sur une extremite proximale de ladite tete 10 de carottage pour couper une masse cylindrique de tissu lorsqu'elle est deplacee de la position actionnee a la position de repos. un mecanisme d' actionnement pour deplacer ladite tete de carottage entre lesdites positions, ledit mecanisme comportant une tige d'actionnement a une extremite de laquelle est placee ladite tete de carottage, et 15 l' extremite distale dudit corps forme un support d' outil chirurgical, ce support d' outil etant configure pour * d'une part, recevoir par emboitement un outil chirurgical creux et supporter cet outil, cet outil entourant l' extremite distale dudit corps lorsqu'il est place sur ledit support d' outil, en etant coaxial avec ledit axe de carottage, 20 et * d' autre part, permettre un guidage lineaire dudit outil chirurgical lors du retrait du dispositif de carottage, et en ce que ledit support d' outil comporte une paroi peripherique exteme qui est tubulaire et de diametre egal ou sensiblement egal au diametre de ladite lame de 25 transsection de sorte que la surface exteme de la lame de transsection soit affleurante, ou sensiblement affleurante, avec la paroi peripherique externe du support d'outil et en ce que, ledit dispositif comprend une lumiere s 'etendant a travers au moms l'extremite proximale dudit corps, de ladite tige d'actionnement et de ladite tete de 30 carottage pour permettre le passage d'un element de guidage souple, ledit dispositif de carottage comprenant un tel element de guidage souple. Date Rei;ue/Date Received 2024-04-12 17 2. Dispositif selon la revendication 1, caracterise en ce que ladite paroi tissulaire etant une paroi d'un creur battant destine a recevoir un dispositif d' ancrage d'une pompe cardiaque comprenant une bride, ou collerette, destinee a etre plaquee contre la surface exterieure de ladite paroi du creur battant, la longueur dudit support 5 d' outil est au moins egale a la somme de I' epaisseur de ladite paroi tissulaire et de l' epaisseur, ou dimension longitudinale, de ladite bride, ou collerette, destinee a etre placee contre la surface exterieure de la paroi dudit creur. 3. Dispositif selon la revendication 1 ou la revendication 2, caracterise en ce qu'il comporte une partie d'un moyen detrompeur, ledit outil chirurgical etant 10 destine a porter la partie complementaire de ce moyen detrompeur, pour orienter ledit outil chirurgical sur ledit support. 4. Dispositif selon l'une quelconque des revendications I a 3, caracterise en ce qu'il comporte une butee pour stopper le deplacement dudit outil chirurgical le long dudit axe longitudinal et en direction de ladite extremite proximale afin que 15 l'outil chirurgical reste positionne sur ledit support d'outil. 5. Dispositif selon l'une quelconque des revendications I a 4, caracterise en ce que ledit corps comporte deux parties de corps embo'itees l 'une dans l 'autre, une premiere partie de corps etant mobile en translation par rapport a l 'autre partie de corps de sorte que son deplacement dans et hors de I' autre partie de corps 20 provoque le deplacement en translation de ladite tete de carottage. 6. Dispositif selon la revendication 5, caracterise en ce que chaque partie de corps comporte une poignee de prehension. 7. Dispositif selon la revendication 5 ou 6, caracterise en ce que ledit mecanisme d'actionnement comprend un chariot de guidage supportant ladite tige 25 d' actionnement et rec;u dans ledit logement inteme, ce logement etant configure pour former un rail de guidage en translation dudit chariot de guidage, ledit chariot de guidage etant solidaire de ladite premiere partie de corps mobile en translation. Date Rei;ue/Date Received 2024-04-12 18 8. Ensemble de pose d'un outil ou d'un accessoire chirurgical dans une paroi tissulaire, caracterise en ce qu'il comprend: un dispositif de carottage selon l 'une quelconque des revendications 1 a 7, et 5 un outil ou accessoire chirurgical creux configure pour etre emboite sur l'extremite distale dudit dispositif de carottage tout en laissant ladite tete de carottage degagee. 9. Ensemble selon la revendication 8, caracterise en ce que ledit outil ou accessoire chirurgical comporte a son extremite distale, une portion tubulaire ou 10 sensiblement tubulaire configuree pour maintenir la forme et le diametre de l'ouverture realisee par carottage dans la paroi tissulaire. 10. Ensemble selon la revendication 9, caracterise en ce que ladite portion tubulaire ou sensiblement tubulaire a une longueur au moins egale a I' epaisseur de la paroi tissulaire. 15 1 I. Ensemble selon l'une quelconque des revendications 8 a 10, caracterise en ce que le corps du dispositif de carottage comportant une partie d'un moyen detrompeur, ledit outil ou accessoire chirurgical comporte une partie complementaire de ce moyen detrompeur, pour orienter ledit outil ou accessoire chirurgical sur ledit support d' outil. 20 12. Ensemble selon l'une quelconque des revendications 8 a 11, caracterise en ce que ledit outil ou accessoire chirurgical etant un outil d'assistance a la pose d'un dispositif d' ancrage d'une pompe cardiaque au travers d 'une ouverture realisee par carottage dans une paroi d'un creur, ledit outil d'assistance creux delimite un canal interne pour le passage dudit dispositif d' ancrage, dont le diametre 25 est sensiblement egal au diametre de cette ouverture. 13. Ensemble selon la revendication 12, caracterise en ce qu'une bride, ou collerette, etant destinee a etre placee contre la surface exterieure de la paroi dudit creur, cette bride comprenant au moins une saillie, ou teton, placee sur sa face Date Rei;ue/Date Received 2024-04-12 19 laterale, ledit outil d' assistance comporte pour chaque saillie, une ramure debouchant destinee a recevoir ladite saillie, ou teton, correspondante, ladite rainure etant configuree pour assurer par rotation dudit outil chirurgical autour de 1 'axe de carottage, un verrouillage dudit outil chirurgical sur ladite bride, ou collerette. 16 CLAIMS 1. A coring device for making an opening in a tissue wall, comprising: a body having a longitudinal axis, said body having a proximal end 5 and a distal end, said body having an internal housing, a coring head having a transecting blade, said head being movable between a rest position and an actuated position, said coring head having an entirely smooth extreme surface and said transecting blade being an annular cutting element mounted on a proximal end of said coring head 10 for cutting a cylindrical mass of tissue when it is moved from the actuated position to the rest position. an actuation mechanism for moving said coring head between said positions, said mechanism comprising an actuation rod at one end of which said coring head is placed, and 15 the distal end of said body forms a surgical tool holder, this tool holder being configured to * on the one hand, receive by fitting a hollow surgical tool and support this tool, this tool surrounding the distal end of said body when it is placed on said tool holder, being coaxial with said coring axis, 20 and * on the other hand, allow linear guidance of said surgical tool during the withdrawal of the coring device, and in that said tool holder comprises an outer peripheral wall which is tubular and of a diameter equal to or substantially equal to the diameter of said transect blade 25 so that the outer surface of the transect blade is flush, or substantially flush, with the wall external peripheral of the tool support and in that, said device includes a light extending through at least the proximal end of said body, said actuating rod and said 30 core head to permit the passage of a flexible guide element, said core drilling device including such a flexible guide element. Date Received 2024-04-12 17 2. Device according to claim 1, characterized in that said tissue wall being a wall of a refracture intended to receive a cardiac pump anchoring device comprising a flange, or collar, intended to be pressed against the outer surface of said wall of the refracture, the length of said tool support 5 is at least equal to the sum of the thickness of said tissue wall and the thickness, or longitudinal dimension, of said flange, or collar, intended to be placed against the outer surface of the wall of said cavity. 3. Device according to claim 1 or claim 2, characterized in that it comprises a portion of a directional means, said surgical tool being 10 intended to carry the complementary portion of this directional means, for orienting said surgical tool on said support. 4. A device according to any one of claims 1 to 3, characterized in that it comprises a stop for preventing the movement of said surgical tool along said longitudinal axis and in the direction of said proximal end so that the surgical tool remains positioned on said tool holder. 5. A device according to any one of claims 1 to 4, characterized in that said body comprises two body parts nested one inside the other, a first body part being movable in translation relative to the other body part such that its movement in and out of the other body part causes the translational movement of said core head. 6. A device according to claim 5, characterized in that each body part comprises a gripping handle. 7. Device according to claim 5 or 6, characterized in that said actuation mechanism comprises a guide carriage supporting said actuating rod 25 and received in said internal housing, this housing being configured to form a guide rail for the translation of said guide carriage, said guide carriage being integral with said first part of the translationally movable body. Date Received 2024-04-12 18 8. Assembly for positioning a surgical tool or accessory in a tissue wall, characterized in that it comprises: a coring device according to any one of claims 1 to 7, and a hollow surgical tool or accessory configured to be fitted onto the distal end of said coring device while leaving said coring head exposed. 9. Assembly according to claim 8, characterized in that said surgical tool or accessory comprises, at its distal end, a tubular or substantially tubular portion configured to maintain the shape and diameter of the opening made by coring in the tissue wall. 10. Assembly according to claim 9, characterized in that said tubular or substantially tubular portion has a length at least equal to the thickness of the tissue wall. 11. Assembly according to any one of claims 8 to 10, characterized in that the body of the coring device comprises a portion of a directional means, and said surgical tool or accessory comprises a complementary portion of this directional means for orienting said surgical tool or accessory on said tool holder. 20 12. Together according to any one of claims 8 to 11, characterized in that said surgical tool or accessory being a tool for assisting in the placement of a cardiac pump anchoring device through an opening made by coring in a wall of a hollow, said hollow assistance tool delimits an internal channel for the passage of said anchoring device, the diameter of which 25 is substantially equal to the diameter of this opening. 13. Assembly according to claim 12, characterized in that a flange, or collar, being intended to be placed against the outer surface of the wall of said cavity, this flange comprising at least one projection, or stud, placed on its lateral face, said assistance tool comprising for each projection, an open branch intended to receive said corresponding projection, or stud, said groove being configured to ensure by rotation of said surgical tool around the coring axis, a locking of said surgical tool on said flange, or collar.
CA3100554A 2018-05-22 2019-05-22 Coring device and coring and insertion assembly comprising such a device Active CA3100554C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1854238A FR3081332B1 (en) 2018-05-22 2018-05-22 CORE-DRILLING DEVICE AND CORE-DRILLING AND INTRODUCTION SET COMPRISING SUCH A DEVICE
FR1854238 2018-05-22
PCT/FR2019/051161 WO2019224477A1 (en) 2018-05-22 2019-05-22 Coring device and coring and insertion assembly comprising such a device

Publications (2)

Publication Number Publication Date
CA3100554A1 CA3100554A1 (en) 2019-11-28
CA3100554C true CA3100554C (en) 2026-02-24

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