EP3787732A1 - Cathéter, ballon gonflable pour cathéther - Google Patents
Cathéter, ballon gonflable pour cathétherInfo
- Publication number
- EP3787732A1 EP3787732A1 EP19721606.2A EP19721606A EP3787732A1 EP 3787732 A1 EP3787732 A1 EP 3787732A1 EP 19721606 A EP19721606 A EP 19721606A EP 3787732 A1 EP3787732 A1 EP 3787732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- balloon
- catheter
- channel
- opening
- vessel
- 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.)
- Pending
Links
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- 210000003462 vein Anatomy 0.000 description 64
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
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- 101100045633 Arabidopsis thaliana TCX3 gene Proteins 0.000 description 11
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1045—Balloon catheters with special features or adapted for special applications for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M2025/1043—Balloon catheters with special features or adapted for special applications
- A61M2025/1052—Balloon catheters with special features or adapted for special applications for temporarily occluding a vessel for isolating a sector
-
- 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
- A61M2230/00—Measuring parameters of the user
- A61M2230/08—Other bio-electrical signals
Definitions
- the field of the invention relates to devices for introducing a solution into a channel of the human body, more particularly vessels and in particular the Marshall vein.
- the field of the invention relates to devices for the treatment of certain cardiac pathologies. More particularly, the field of the invention relates to that of catheters comprising means for directing a solution to be injected into a channel, for example of the Marshall vein type.
- Marshall's vein is involved in the causes of cardiac fibrillation-like heart disease such as atrial fibrillation, called FA.
- Marshall's vein is a vein of the heart that is not a priori necessary, but because of its involvement in the occurrence of certain pathologies, it is treated when performing an interventional cardiology act at the level of the heart. heart.
- AF atrial fibrillation is an arrhythmia defined by chaotic activation of the atria. It is triggered by atrial extrasystoles initiating multiple and variable reentries.
- the pulmonary veins, a source of extrasystoles and a substrate for reentry, are recognized as the fundamental structures for the initiation and maintenance of atrial fibrillation. They are therefore the main target of ablation.
- Other structures have similar characteristics: superior vena cava, coronary sinus, Marshall's ligament. If the first two can be treated by ablation, Marshall's ligament is hardly accessible by this type of treatment.
- Marshall's ligament is an embryonic vestige resulting from the involution of the left superior vena cava and its musculature. Incomplete apoptosis of the venous musculature leads to the persistence of several muscle connections between the endocardium and the epicardium. Marshall's ligament thus consists of a small venous network, also called "Marshall's vein", closely associated with an arborization muscular. This complex structure is conducive to initiation and maintenance of atrial fibrillation through automaticity and reentry mechanisms. Walking between the left pulmonary veins and the left auricle, Marshall's vein joins the large cardiac vein to collapse into the coronary sinus. However, like all veins, it is subject to anatomical variations of path.
- the invention relates to a medical device comprising a catheter and a balloon arranged on a portion of the distal end of the catheter,
- a first injection lumen of a first volume of a treatment solution the first lumen opening laterally on a first distal opening of the catheter;
- a second injection light for conveying a second volume comprising a gas or a liquid for inflating the balloon;
- ⁇ said balloon comprising:
- an opening intended to cooperate with a distal opening of the second lumen to allow the entry of the second volume into the balloon to ensure its inflation and; o a channel opening laterally vis-à-vis the longitudinal axis of the catheter, the channel being intended to cooperate with the first opening of the catheter to allow the entry of the first volume in said channel.
- One advantage is to allow the introduction of a volume of alcohol in a localized region inside the Marshall vein and its engagement while ensuring a seal of the treated area by inflating the balloon.
- said balloon is intended to make a sealed contact with the wall of a vessel.
- the channel opens laterally vis-à-vis the longitudinal axis of the catheter in the extension of a lateral opening of said catheter.
- a portion of the body of the catheter forms a wall of the volume obtained after inflation of the balloon.
- the balloon comprises at least two channels opening laterally vis-à-vis the longitudinal axis of the catheter in the extension of a lateral opening of said catheter, each channel being intended to cooperate with a first opening of the catheter. catheter for allowing entry of the first volume into at least one channel, each first opening cooperating with a lumen of the catheter.
- the balloon comprises at least one stiffening element for preforming at least one channel.
- the balloon has a circumferential lip arranged at the distal end of the channel, said lip making it possible to achieve a local increase in the thickness of the balloon.
- the channel has a flared opening whose opening angle is greater than 90 °.
- the balloon is attached to a movable portion of the catheter, said movable portion being rotatably mounted about the main axis of the catheter.
- the catheter has a second opening cooperating on the one hand with the distal end of the second lumen and on the other hand with the opening of the balloon, the catheter comprising the second lumen.
- One advantage is to allow the inflation of the balloon when the latter is well positioned. Inflation can then be performed from a catheter integrated lumen.
- the invention allows the introduction of a single catheter body performing the functions to perform all stages of alcoholization of the Marshall's vein and its engagement.
- the device comprises a third lumen adapted to the passage of a guide or a liquid solution, said third lumen opening on a distal opening of the catheter.
- the first lumen comprises a diameter between 2F and 5F, preferably 4F, and;
- the second lumen comprises a diameter of between 1 and F 1, 5F, preferably 1, 2F.
- One advantage is that the dimensions respect the dimensional and physiological constraints of the vessels of the region of the coronary sinus and the Marshall's vein while allowing the introduction of the elements allowing the guiding of the catheter, the inflation of the balloon and the introduction of a treatment solution.
- the opening lateral channel is flared so that the average diameter of the lateral opening is greater than the average diameter of the inlet of the channel.
- One advantage is to promote flow of an alcohol solution in the area of the Marshall vein.
- the balloon has an outer diameter adapted to form a sealed contact with a wall of a first vessel when the balloon is inflated to seal between the channel and the inlet of a second vessel and for delivering, at a stopping of a second vessel with the first vessel, a first volume of a solution.
- One advantage is to seal the treated area with other areas of the coronary sinus.
- the catheter has at least one electrode disposed on the surface of the distal end of the catheter body for recording electrical activity in the vessel.
- One advantage is to allow the control of an electrical response of a tissue at the beginning of treatment to validate an area to be treated.
- Another advantage may be to control at the end of treatment that the region has been treated.
- the invention in another aspect, relates to an inflatable balloon having an inner surface for extending over a portion of the circumference of a catheter and an outer surface defining its largest diameter when inflated, said balloon comprising a side channel passing through the balloon and opening laterally to the longitudinal axis of the catheter.
- the balloon is intended to make a sealed contact with the wall of a vessel.
- the lateral channel passing through the balloon opens laterally to the longitudinal axis of the catheter in the extension of a lateral opening of said catheter.
- the inflatable balloon has an inflated predefined shape defining the shape of the lateral channel.
- the balloon has a generally substantially cylindrical hollow or toric shape.
- the channel defines a substantially conical shape.
- the balloon has a locating pin at the entrance of the channel intended to cooperate with the output of a catheter lumen when the balloon is arranged on the distal end of the catheter.
- the balloon has two openings arranged on the inner surface of the balloon, the first opening defining the inlet of the lateral channel and the second opening defining an inflation inlet.
- the catheter has a second opening cooperating on the one hand with the distal end of the second lumen and on the other hand with the opening of the balloon, the catheter comprising the second lumen.
- the balloon has a preformed shape. When inflated, the balloon recovers a predefined shape.
- the invention relates to a use of a device of the invention for the treatment of the Marshall's vein and its stoma.
- the treatment concerns in particular the alcoholization of this region with a view to performing a chemical ablation.
- FIG. 1 a sectional view along a longitudinal plane of an embodiment of a device of the invention
- FIG. 2 is a 3D view of an embodiment of a device of the invention.
- ⁇ Figure 3 a sectional view according to a side plane of an embodiment of a device of the invention
- ⁇ Figure 4 a sectional view according to a side plane of an embodiment of a balloon of the invention
- FIG. 5 shows a 3D view of an embodiment of a balloon of the invention
- FIG. 6 a representation of an embodiment of a device arranged close to the anastomosis of vessels 42 and 41;
- FIG. 7 is a representation of an embodiment of a device of the invention comprising a sheath
- FIG. 8 a three-dimensional representation of a heart on the surface of which the Marshall vein is represented;
- FIG. 9 an embodiment of the device of the invention wherein the balloon is crimped to the catheter surface
- Figure 10 an embodiment of the device embodiment of the invention of Figure 9 wherein the balloon is expanded over a greater length of the catheter;
- Figure 1 1 one embodiment of the inventive device in which the ball has two channels for supplying a treatment liquid in one or the other channel;
- Figure 12 a variant of the embodiment of Figure 1 1, wherein the device of the invention comprises a balloon having three channels for potentially convey a treatment liquid;
- Figure 13 an example of preformed channel with at least one mechanical element forming a ring to constrain the shape of the channel during inflation of the balloon;
- FIG. 14 an example of a balloon of the invention having reinforcing lip seal with a channel having a reduced circumference
- FIG. 15 an example of a balloon of the invention comprising a reinforcing lip seal with a channel having a tapered opening;
- FIG. 16 a sectional view according to a side plane of an embodiment of a balloon of the invention having a tapered channel
- FIG. 17 a catheter according to an embodiment having a rotatable portion on which the ball is arranged.
- Figure 1 shows an embodiment of a device of the invention for longitudinal sectional view.
- the device 1 comprises a catheter 10 and a balloon 20.
- the longitudinal section illustrates a catheter 10 having a plurality of lights LUi, LU2, LU3 and the balloon 20 associated with the catheter 10 in the device 1.
- the catheter 10 comprises a LU1 light for conveying for example a volume of a first SOL1 solution for entering a vessel 42, such as a vein.
- the invention is particularly advantageous when it is applied to the introduction of a volume of SOL1 liquid in the Marshall vein, since the device 1 of the invention makes it possible to reach the mouth 43 of the Marshall vein 42 with sufficient accuracy for the solution to penetrate into said vein as shown in Figure 6.
- Figure 8 shows a three-dimensional view of the Marshall vein 42 on the surface of the myocardium.
- the SOL1 solution injected is an alcohol solution.
- One advantage is to treat the area near the mouth 43 in the solutions addressed to the problem of AF.
- the solution SOL1 injected is an iodine solution.
- One advantage is to improve the quality of images acquired by a medical imaging system.
- FIG. 1 represents an injector 31 comprising a SOL1 solution to be injected into a channel 42 of the human body.
- a piston 32 is shown to illustrate the function to engage the SOL1 solution in the LU1 light.
- a valve 30 allows in this example to open or not the passage to a volume of SOL1 solution to be transmitted. In addition, the valve can make it possible to evacuate a volume of air and / or to control the pressure inside the light LU1. Other embodiments are conceivable in order to generate a controlled pressure of the solution SOL1 so that it can be ejected towards the zone to be treated via the lateral channel 23 extending the light LU1.
- the first light LU1 allows the passage of a guide to reach an area of the vessel 42.
- the first light LU1 can be sized to allow the passage an angioplasty balloon, such as a small balloon to inject distally into the vein 42.
- An advantage is to allow to reach, for example, the interior of the Marshall's vein from a guide while for successively treating the zone 43 forming a mouth of the vessel 42 with the vessel 41 by injecting an alcohol solution SOLi.
- the vessel 41 is the coronary sinus and the vessel 42 is the Marshall vein.
- the first light LUi is a light of diameter 4F.
- the device 1 of the invention comprises a balloon 20 arranged at the distal end 13 of the catheter 10.
- the balloon 20 is fixed to the external surface of the catheter 10 so as to cooperate an outlet 21 'of the light LUi with a channel 23 formed by the balloon 20.
- the channel 23 has at its ends an inlet 21 disposed opposite the outlet 21 'of the first light LUi and a lateral opening 22.
- the channel 23 is designed to direct the volume of a SOLi solution injected from the first light LUi to the lateral opening 22 of the balloon 20.
- One of the advantages of the invention is that it can direct a flow laterally to the direction of the catheter.
- the minimum diameter of the channel 23 can be sized for the passage of an operator guide to allow the insertion of a guide in the vessel 42.
- the opening of the channel 23 allows to inject a SOLi solution and / or a guide.
- FIG. 6 represents, in fact, a Marshall's vein 42 opening onto a vein 41.
- the catheter 10 is introduced into the vein 41 so as to present the lateral opening 22 of the balloon vis-à-vis the mouth 43 of the Marshall vein 42.
- the SOLi solution then flows into the vein of Marshall 42 to perform a treatment.
- An advantage of the invention is to allow treatment of zone 43 which would not have been if an arm of an organ of a prior art catheter had penetrated into vein 42.
- the balloon 20 forms an inflatable member extending circumferentially on a portion of the surface of the catheter 10.
- the balloon 20 may comprise, according to the embodiments, a toric shape as shown in FIG. Figure 5.
- the balloon 20 may have a hollow cylindrical shape, as shown in FIG. 2, to form a hollow central channel for passage of the catheter 10.
- the balloon 20 has a shape extending progressively from the circumference of the catheter to its maximum radius. An example is shown in FIG. 6.
- the balloon 20 can therefore comprise different shapes so that it provides a first sealing function vis-à-vis the wall of the vessel 41 in which the catheter 10 is introduced and a second duct function to reach the engagement of a second vessel 42.
- the balloon 20 may comprise different three-dimensional shapes, preferably with symmetries of revolution.
- the balloon 20 comprises an elastic or plastic material making it possible to obtain a very good adaptation of the shape of the balloon 20 in contact with the wall of the vessel 41.
- the wall of the balloon 20 is made of polymer material.
- the channel 23 has a flared shape whose outer output diameter is greater than the input diameter cooperating with the output of the light LUi.
- the shape of the channel 23 may for example be conical.
- the channel 23 forms a symmetrical cylinder whose output diameter is substantially equal to the input diameter.
- the balloon 20 has a positioning pin 27 for securing the opening 21 of the balloon 20 with the outlet 21 'of the first light LUi.
- a positioning pin 27 is shown in FIG. 3. It is then arranged so as to be introduced into the outlet mouth of the first light LU 1, thus the positioning pin makes it possible to keep the channel 23 in position. the continuity of the first light LUi.
- the positioning pin 28 is arranged in continuity with the first lumen and forms a projection outside the surface of the catheter 10.
- the first lumen LU 1 comprises then in its extension a termination forming the positioning pin 28.
- Another advantage is to provide a consumable balloon adaptable to a given catheter.
- the positioning pin makes it possible to define an adjustable junction element that can absorb a certain amount of play.
- the interface 21 -21 ' is directly ensured by a continuity between the output 21' of the first light LU1 and the input 21 This embodiment is advantageous when the balloon 20 is directly attached to the surface of the catheter 10, for example, by gluing.
- the balloon 20 is preformed so as to draw the shape of the channel 23 when the balloon 20 is inflated.
- a deformable mechanical element is sewn into the balloon so as to define a predefined shape of the channel 23 when the balloon 20 is inflated.
- the deformable mechanical element is glued or welded.
- the channel 23 is stiffened by a material or a stiffening element. This makes it possible to prevent the closure of the channel 23 during inflation of the balloon 20.
- the balloon 20 can be in two states:
- Figure 7 shows an embodiment
- ⁇ an inflated state, for example, used during an injection operation of a volume or the passage of a guide in the channel 23.
- An interest in the use of the balloon 20 is to limit the reflux of alcohol introduced to treat Marshall's vein 42 which would likely return to the vessel.
- the balloon 20 then forms a sealing element ensuring that the SOLi alcohol solution is not diffused into other vessels than the Marshall's vein 42, in particular in the vessel 41 into which the catheter 10 is introduced.
- Second light LU2 Second light LU2
- the balloon 20 is inflatable via a second light LU2.
- the second light LU2 is integrated with the catheter 10, according to another mode, the light LU2 can be arranged on the outer surface of the catheter 10.
- the second light LU2 has an inlet 35 so as to interface with a pressurized gas injector, for example air or a liquid for inflation.
- a pressurized gas injector for example air or a liquid for inflation.
- the solution injected to inflate the balloon is called SOL2.
- the light LU2 has an outlet 25 'cooperating with an inlet 25 of the balloon 20.
- the cooperation of the interface 25-25 ' is made at the surface of the catheter 10, so that the second lumen LU2 opens laterally to the hollow interior surface of the balloon.
- the interface 25-25 ' is formed on a proximal surface of the balloon 20 so as to allow inflated from outside the catheter 10.
- the LU2 lumen extends, for example, along the catheter 10 to which it is attached.
- a guide rail makes it possible to maintain the second light LU2 to the catheter 10.
- the second light LU2 comprises a positioning pin or a connecting element making it possible to ensure that the volume SOL2 introduced is directed towards the inside of the balloon 20.
- the pin of FIG. positioning of the second light LU2 may be of the type cooperating with the interface 21 -21 '.
- the positioning pin if necessary, can be arranged on the interface 25 of the balloon 20.
- the second light LU2 has a diameter of between 1 and 1.5 F.
- the catheter 10 includes a third lumen LU3. According to one example, this light can be coaxial with An advantage is that it can pass, for example, a guide ensuring the stability of the catheter 10 in a vessel 41, for example a blood vessel such as the coronary sinus.
- the third lumen LU3 opens onto a distal opening 17 of the catheter 10.
- the diameter of the opening 17 can be adapted to the introduction of a solution such as a contrast medium and / or in passing of a guide.
- a guide can indeed be adapted for the purpose of stabilizing the catheter 10.
- the third light LU3 makes it possible to be used in order to deliver a so-called "radiopaque" developer or marker in order to improve the visibility of the positioning of the catheter 10 by means of an imaging system
- the third light LU3 can be used to diffuse a volume of iodine within a vessel 41.
- One advantage is to improve the positioning of the catheter 10 so that the channel 23 is precisely opposite the exit opening of the vessel 42, as illustrated in the zone 43, FIG. 6.
- the inflation of the balloon 20 and the injection of iodine by the LU3 coaxial light make it possible to perform a venography of the coronary sinus to locate the Marshallian vein 42.
- This step can be carried out prior to the positioning of the channel 23 of the balloon 20 next to the mouth 43, that is to say the ostium of the vessel 42. Then, the injection of alcohol in said vein 42 can be conducted safely.
- Another advantage of inflating the balloon 20 is to block the flow of the vessel 41 which can no longer flow into the coronary sinus.
- the catheter 10 then allows the introduction of a volume of alcohol at the level of the mouth 43 of the Marshall's vein 42 without being affected by the flow of the vessel 41. The operation is thus facilitated by the presence of the balloon 20.
- the third light LU3 is a light whose diameter is 2.5 F.
- the catheter 10 has a diameter of 7-9 F allowing it to have three lights LU1, LU2, LU3. According to one embodiment, the latter may be provided with a sheath January 1 to be guided.
- the device of the invention 1 further comprises a gainel 1 of larger diameter than that of the catheter 10. The sheath 1 1 keeps the balloon 20 deflated on the surface of the catheter 10 during its guidance at the level of the engagement of the vessel 42.
- FIG. 7 represents an exemplary embodiment, in which the sheath 11 makes it possible to keep the balloon in a reduced space on the surface of the catheter 10. When the sheath 11 is introduced, to the vessel 42, it is then removed to release the balloon 20 so that it can be inflated.
- the sheath 1 1 allows the guiding of the catheter 10 to the coronary sinus when it comes to the treatment of the Marshall vein.
- the sheath 11 is an interventional cardiology sheath.
- An advantage of the device 1 of the invention is to allow to perform several functions with a single device.
- the catheter 10 has electrodes arranged and attached to the distal surface of the catheter body for recording electrical activity in the vessel 41.
- the electrical signals collected by the electrodes are transmitted by means of a connector through the catheter 10, for example in one of the available lights.
- the electrical connection is integrated in the body of the catheter 10.
- the catheter 10 is deflectable.
- the deflection is controlled by a proximal handle 12.
- the catheter 10 may be, for example, guided from a proximal handle 12. It is referred to catheter made deflectable and therefore orientable to facilitate introduction into the coronary sinus and then to ostium of Marshall's vein.
- the invention relates to an application of an inflatable balloon 20 of the invention to form a Marshall vein treatment device.
- the invention relates to a use of the catheter of the invention to alcoholise the region of the Marshall's vein, more particularly within the Marshall vein and in the area. corresponding to the opening of the latter with the coronary sinus. This use can then be a preliminary step to the ablation of atrial fibrillation by radiofrequency.
- the invention relates to a method of treating the Marshall vein.
- the method comprises:
- inflating the balloon 20 of the invention said balloon cooperating with: an opening of the catheter to extend the distal end of the first lumen LU1 in a lateral channel 23;
- the treatment solution is an alcohol solution.
- a test liquid is introduced before the treatment solution in the first lumen LU1 in order to verify the tightness of the balloon 20 with the wall of the coronary sinus 41.
- the test liquid is a radiopaque contrast medium.
- An advantage of the catheter 10 of the invention is to facilitate the ablation of AF. Indeed, the catheter 10 provides a destruction of the conduction muscle tissue associated with the Marshall vein. As previously stated, Marshall's vein and its muscular arborization are involved in several ways in the process of atrial fibrillation.
- the alcoholization of the Marshall's vein 42 by means of the device of the invention makes it possible to carry out a chemical ablation.
- the catheter 10 is introduced up to the mouth 43 of the Marshall's vein 42, the inflation of the balloon is then engaged to guide the outlet of the channel 23 with respect to the mouth 43 of the vein of Marshall 42.
- the balloon 20 is inflated so as to be in contact with the wall of the vessel 41, the coronary sinus.
- a second volume of alcohol can be introduced into the Marshall vein 42 from a device introduced into the first light LUi.
- This embodiment makes it possible to inject a volume of alcohol into the vein 42 and to go beyond the zone directly in the vicinity of the stitching area 43.
- the introduced device is a balloon angioplasty.
- FIG. 9 illustrates an alternative embodiment in which the balloon 20 is crimped onto the body of the catheter 10.
- the balloon 20 is crimped on the circumference of the catheter 10.
- the junction 16 between the balloon 20 and the catheter 10 forms a ring.
- This junction is, for example, made from a tubular concentric clamping element.
- the clamping of this tubular element is achieved by exposing said element to a physical field which may for example be thermal.
- the balloon 20 is heat fused welded II is for example heat sealed. Other methods of attaching the balloon to the catheter 10 may alternatively or jointly be performed.
- the balloon 20 is glued or joined from an adhesive.
- the volume inflated by a pressurized gas or liquid exerts a pressure on the wall of the balloon to inflate it and on the outer wall of the catheter 10.
- a portion of the body of the catheter 10 forms a wall of the inflated volume obtained after inflation.
- Figure 10 shows a variant in which the balloon 20 extends over a longer distance along the catheter 10.
- One advantage is to make a border with the vessel 41 longer. Consequently, this configuration ensures a good seal between the treated zone and the upstream and downstream parts of the vessel 41.
- the balloon is inflated until it reaches the wall of the vessel 41 in order to make a tight connection.
- the channel 23 is preformed to obtain a directive shape during inflation of the balloon 20 in order to direct the flow of the solution SOLi in the engagement zone 43.
- the channel 23 is formed solely by inflating the balloon 20. Because of its fixation around the opening 21, the inflation of the balloon makes it possible to draw a channel 23 naturally.
- the balloon 20 is fixed on the wall of the catheter 10 at two positions distant from the length of the balloon.
- the fixations are preferably annular when the balloon is arranged all around the circumference of the catheter 10.
- the channel 23 is preferably centered between the two zones for fixing the balloon on the catheter.
- the second light LU2 opens onto a lateral opening 25 'of the catheter 10 in order to deliver a flow of a gas or liquid SOL2 for inflation.
- the gas or the inflation liquid is dispersed between the wall of the catheter 10 and the wall of the balloon 20.
- the first light LU1 opens onto a lateral opening 21 'of the catheter 10 and cooperates with the inlet 21 of the channel 23.
- Figure 1 1 shows a section of a device 1 of the invention wherein the balloon 20 has two channels 23, 23 '.
- the two channels 23, 23 ' are positioned within the balloon 20 at two opposite peripheral positions.
- two lights LU1, LU- can be arranged to route SOL1 solution.
- a single LU1 light is arranged within the catheter 10 and is configured to address the SOL1 solution either in the channel 23, or in the channel 23 '.
- a means for directing the SOL1 solution is activated to orient the output of the light LU1 in one or other of the channels 23, 23 '.
- the LU1 light is possibly orientable and can be attached to an outlet of the catheter 10 by a distal control.
- the second light LU2 is not shown. It can be arranged in a plane other than the section plane of FIG. This configuration makes it possible to facilitate the orientation of the catheter 10 so as to position a channel 23 or 23 'in front of the engagement zone 43.
- FIG. 12 represents a variant of FIG. 11, in which three channels 23, 23 'and 23 "are arranged within the balloon 20.
- three lights LUi, LU-, LUi " possibly deliver a solution SOLi in one of the channels 23, 23 'or 23 ".
- a single light LUi is configured to deliver a solution SOLi in one of the channels 23, 23 ', 23 ".
- either the light LUi is orientable, or an activation means can be set up to direct the output of the light LUi to one of the three inputs of the channels 23, 23 'or 23 ".
- the channels 23, 23 'and 23 " are preformed with a more or less directive opening.
- the channel 23 is more flared than the channel 23 '.
- the channel 23 ' is more flared than the channel 23 ".
- the channel 23 ' makes it possible to direct the treatment liquid SOLi in a very localized manner in the engagement zone 43.
- An advantage of this configuration is to choose the channel 23, 23 'or 23 "most suited to the geometry of the staging area.
- the balloon 20 may comprise a plurality of channels 23.
- their main orientation is preferably spaced at least 45 ° vis-à-vis another channel.
- the balloon 20 may comprise channels 23 arranged in different parallel and intersecting planes to the axis of the catheter 10.
- Each secant plane is preferably perpendicular to the axis Ac of the catheter 10.
- FIG. 13 represents an exemplary case of a channel 23 comprising a preformed geometry constraining the inflation geometry of the balloon 1 at the level of the channel 23.
- the preformed channel 23 can be obtained by rings 24 forming a mechanical reinforcement imposing a cone-shaped channel 23.
- the sections perpendicular to the main axis Av of the channel 23 are circles. According to other examples, the sections may be conical, oval or any form generating a substantially tubular shape.
- the stiffening elements have an elasticity.
- This elasticity allows a control of the deformation of the channel 23 as a function of the pressure inside the balloon 20. Consequently, the opening of the channel 23 can be controlled by an adjustment of the internal pressure of the balloon 20.
- the deformation of the stiffening elements evolves according to a scale dependent on a predefined pressure range.
- the invention makes it possible to establish a link or a correspondence between a given pressure and a deformation of the given channel. Consequently, the invention makes it possible to modulate the volume of the channel 23.
- One advantage is to configure the directivity of the channel 23 to diffuse the solution SOLi in the stopping zone 43.
- the stiffening elements comprise an elasticity which depends on their distance from the surface of the catheter 10.
- the stiffening elements comprise an elasticity which depends on their distance from the surface of the catheter 10.
- a role of the balloon 20 is to form a sealed boundary against the wall of the vessel 41 so that the solution SOLi does not flow upstream or downstream of the vessel 41.
- the solution SOL 1 is generally a toxic alcohol solution for the vessels, the balloon 20 must therefore be inflated sufficiently to provide a sealed zone around the engagement zone 43.
- FIG. 14 represents an example of a device 1 of the invention comprising a balloon 20 having a circumferential lip 210 at the end 22 of the channel 23.
- the circumferential lip 210 forms a ring around the outlet 22 of the channel 23.
- the lip 210 is formed by a portion of the surface of the balloon 20.
- the balloon 20 may be preformed with a portion wider 210 to strengthen the seal when the balloon is inflated.
- the wider portion of the balloon 20 corresponds to a lateral extra thickness of the balloon 20.
- An advantage of this configuration is to increase the thickness of the balloon 20 around the engagement zone 43 which ensures contact with a portion of the vessel 41 which is located near Commencement Zone 43 or in Commencement Zone 43.
- FIG. 15 represents an example of a device of the invention comprising a balloon 20 having a flared channel 23.
- the opening angle 29 may be greater than 90 ° as shown in Figure 15.
- the channel 23 substantially forms a cone forming the flared opening.
- a circumferential lip 210 may be produced at the outlet of the channel 23 on a circumferential portion surrounding the outlet 22 of the channel 23.
- a flared opening may be made without a lip being necessarily performed.
- An advantage of a flared opening 22 is to increase the area reached by the SOLi solution discharged at the engagement zone 43.
- the channel 23 is formed by the shape of the balloon 20.
- the balloon 20 is, for example, crimped, glued or fixed around the opening 21 of the catheter 10. When it does not include a reinforcement allowing to realize the shape of the channel 23, it is the inflation which forms the channel 23.
- Figure 1 6 shows a cross section of the device 1 of the invention in which a section of the catheter 10 and a section of the balloon 20 are shown.
- the opening of the channel 23 is flared so that the liquid SOLi introduced into the light LUi reaches the entire landing zone 43.
- the angle 29 can be, for example, between 90 ° and 180 ° for a flared shape.
- the balloon 20 is attached to the catheter 10 at the junctions 27 to form a channel 23.
- One advantage is to allow diffusion throughout the engagement zone 43 while maintaining a sealed contact between the balloon 20 and the vessel wall 41,
- the balloon 20 is inflated to provide a sealed boundary with the wall of a vessel 41.
- This tight border makes it possible, when inflated, to ensure the tightness of a landing zone 43 of two vessels 41, 42.
- the staging zone 43 is reached by the channel 23 and a SOLi solution can be injected .
- the engagement zone 43 and the vessel 42 then extend the channel 23.
- the zone thus formed preserves the zones of the vessel 41 situated upstream and downstream of the balloon 20 of the SOLi solution.
- FIG. 17 shows an embodiment of a balloon 20 removably mounted on a portion of a catheter 10 whose wall 28 is pivotable by a predefined angle.
- the light LUi opens, for example, on an opening of the body of the catheter 10 having a shape of a circular arc.
- Other embodiments of the catheter 10 are also possible in this embodiment of a pivotable portion 28.
- the body 28 of the catheter 10 may comprise in its thickness a reservoir to allow significant pivoting without having to perform a opening too important.
- An advantage of this configuration is to simply orient the channel 23 vis-à-vis the stitching zone 43.
- the steering of the orientation can be achieved from an electromagnetic control.
- the pivotable element 28 can be actuated by an electromagnet to determine a given angle vis-à-vis an angular reference.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Child & Adolescent Psychology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1800428A FR3080774B1 (fr) | 2018-05-04 | 2018-05-04 | Catheter, ballon gonflable pour cathether |
PCT/EP2019/061209 WO2019211362A1 (fr) | 2018-05-04 | 2019-05-02 | Catheter, ballon gonflable pour cathether |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3787732A1 true EP3787732A1 (fr) | 2021-03-10 |
Family
ID=63722433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19721606.2A Pending EP3787732A1 (fr) | 2018-05-04 | 2019-05-02 | Cathéter, ballon gonflable pour cathéther |
Country Status (8)
Country | Link |
---|---|
US (1) | US20210236779A1 (fr) |
EP (1) | EP3787732A1 (fr) |
JP (1) | JP2021522018A (fr) |
CN (1) | CN112074318B (fr) |
AU (1) | AU2019263638A1 (fr) |
CA (1) | CA3097085A1 (fr) |
FR (1) | FR3080774B1 (fr) |
WO (1) | WO2019211362A1 (fr) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4351342A (en) * | 1981-06-10 | 1982-09-28 | Wiita Bruce E | Balloon catheter |
US4696304A (en) * | 1984-09-10 | 1987-09-29 | Thomas J. Fogarty | Thermodilution flow-directed catheter assembly and method |
JPH01145074A (ja) * | 1987-12-01 | 1989-06-07 | Terumo Corp | バルーンカテーテル |
US5306250A (en) * | 1992-04-02 | 1994-04-26 | Indiana University Foundation | Method and apparatus for intravascular drug delivery |
US5746716A (en) * | 1995-07-10 | 1998-05-05 | Interventional Technologies Inc. | Catheter for injecting fluid medication into an arterial wall |
US5833658A (en) * | 1996-04-29 | 1998-11-10 | Levy; Robert J. | Catheters for the delivery of solutions and suspensions |
US7758541B2 (en) * | 2004-08-17 | 2010-07-20 | Boston Scientific Scimed, Inc. | Targeted drug delivery device and method |
WO2007002423A2 (fr) * | 2005-06-24 | 2007-01-04 | Abbott Laboratories | Catheter a ballonnet |
US9867530B2 (en) * | 2006-08-14 | 2018-01-16 | Volcano Corporation | Telescopic side port catheter device with imaging system and method for accessing side branch occlusions |
TWI517833B (zh) * | 2009-03-31 | 2016-01-21 | 東麗股份有限公司 | 附有氣球之電燒導管用軸及附有氣球之電燒導管系統 |
US10058675B2 (en) * | 2009-09-21 | 2018-08-28 | Cook Regentec Llc | Infusion catheter tip for biologics with reinforced external balloon valve |
JP2012205697A (ja) * | 2011-03-29 | 2012-10-25 | Terumo Corp | カテーテル及びその製造方法 |
CN104665922B (zh) * | 2015-02-26 | 2017-01-18 | 首都医科大学附属北京安贞医院 | Marshall韧带无水乙醇消融系统 |
US20210077182A1 (en) * | 2015-10-05 | 2021-03-18 | Autonomix Medical, Inc. | Smart Torquer and Methods of Using the Same |
US10136945B2 (en) * | 2015-12-09 | 2018-11-27 | Biosense Webster (Israel) Ltd. | Ablation catheter with light-based contact sensors |
-
2018
- 2018-05-04 FR FR1800428A patent/FR3080774B1/fr active Active
-
2019
- 2019-05-02 US US17/052,416 patent/US20210236779A1/en active Pending
- 2019-05-02 EP EP19721606.2A patent/EP3787732A1/fr active Pending
- 2019-05-02 WO PCT/EP2019/061209 patent/WO2019211362A1/fr unknown
- 2019-05-02 AU AU2019263638A patent/AU2019263638A1/en active Pending
- 2019-05-02 CN CN201980030073.6A patent/CN112074318B/zh active Active
- 2019-05-02 CA CA3097085A patent/CA3097085A1/fr active Pending
- 2019-05-02 JP JP2020561704A patent/JP2021522018A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3080774A1 (fr) | 2019-11-08 |
FR3080774B1 (fr) | 2022-07-15 |
US20210236779A1 (en) | 2021-08-05 |
JP2021522018A (ja) | 2021-08-30 |
CA3097085A1 (fr) | 2019-11-07 |
WO2019211362A1 (fr) | 2019-11-07 |
AU2019263638A1 (en) | 2020-11-12 |
CN112074318A (zh) | 2020-12-11 |
CN112074318B (zh) | 2022-10-28 |
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