WO2020253739A1 - Ballonnet médical, cathéter à ballonnet et dispositif médical - Google Patents

Ballonnet médical, cathéter à ballonnet et dispositif médical Download PDF

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Publication number
WO2020253739A1
WO2020253739A1 PCT/CN2020/096642 CN2020096642W WO2020253739A1 WO 2020253739 A1 WO2020253739 A1 WO 2020253739A1 CN 2020096642 W CN2020096642 W CN 2020096642W WO 2020253739 A1 WO2020253739 A1 WO 2020253739A1
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WO
WIPO (PCT)
Prior art keywords
balloon
medical
medical balloon
recesses
sub
Prior art date
Application number
PCT/CN2020/096642
Other languages
English (en)
Chinese (zh)
Inventor
刘云云
李明华
谢志永
�田�浩
寸雨曦
Original Assignee
微创神通医疗科技（上海）有限公司
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Publication of WO2020253739A1 publication Critical patent/WO2020253739A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1002—Balloon catheters characterised by balloon shape
    • 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
    • A61M25/104—Balloon catheters used for angioplasty
    • 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
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • 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
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials

Definitions

  • the present invention relates to the technical field of medical equipment, in particular to a medical balloon, a balloon catheter and a medical device.
  • Balloon dilatation is an important technology in the field of interventional therapy and is widely used in coronary heart disease, cerebral thrombosis, and aneurysm lesions. And other diseases are being treated. Medical balloons need to have better support performance to achieve the treatment of diseased blood vessels.
  • Fig. 1 shows a blood vessel 1 with a disease.
  • the radius of curvature r of the blood vessel 1 at the location of the disease is ⁇ .
  • the linear medical balloon 2 is fed into the blood vessel 1 through the catheter 3.
  • the medical balloon 2 expands, but it cannot adapt to the blood vessel 1 itself.
  • the medical balloon 2 stretches the blood vessel 1 so that the radius of curvature r of the blood vessel 1 increases to ⁇ , which in turn causes excessive tearing of the blood vessel 1 in the areas A and B in Fig. 2, causing the blood vessel 1 to tear or tear Spasms.
  • the stress in the B area is relatively concentrated, which easily causes the connection point of the medical balloon 2 and the catheter 3 to be discounted.
  • the purpose of the present invention is to provide a medical balloon, a balloon catheter and a medical device.
  • the medical balloon of the present invention has good bending performance, can adapt well to the shape of blood vessels, and avoid excessive tearing of blood vessels.
  • the present invention provides a medical balloon, which includes a balloon body and a recess formed on the outer surface of the balloon body.
  • the recessed portion extends along the circumferential direction of the balloon body.
  • the recessed portion is a continuous annular groove, or the recessed portion includes at least two sub-recessed portions spaced apart along the circumference of the balloon body.
  • each of the recesses extends along the circumferential direction of the balloon body, and the two or more recesses are along the The balloon bodies are arranged sequentially in the axial direction.
  • the concave portion has a spiral structure and spirally surrounds along the axis of the balloon body.
  • the recess includes at least two sub-recesses in a spiral structure, at least two of the sub-recesses are arranged in sequence along the axial direction of the balloon body and connected to each other, and the two connected sub-recesses The direction of rotation of the depression is opposite.
  • the recess includes at least two sub-recesses in a spiral structure, and at least two of the sub-recesses are spaced apart along the axial direction of the balloon body
  • the shape of the recessed portion is at least one of an arc, a square, a trapezoid, or a V-shape.
  • the outer diameter of the balloon body is tapered from the proximal end to the distal end.
  • the present invention provides a balloon catheter, which includes the medical balloon as described above and a catheter connected to the proximal end of the medical balloon.
  • the present invention provides a medical device, which includes the aforementioned balloon catheter and a stent crimped on the medical balloon of the balloon catheter.
  • the stent has a pipe network structure and includes a pole and a connecting rod connected to each other along the axial direction of the stent;
  • the stent and the medical balloon are in an expanded state, at least a part of the probe is positioned on the balloon body of the medical balloon.
  • the connecting rod is positioned at a recess of the medical balloon.
  • both ends of the wave rod are respectively positioned on the balloon body on both sides of the recessed portion, and the length of the two ends of the wave rod positioned on the balloon body is not less than 0.5mm.
  • the lengths of the two end portions of the probes positioned on the balloon body are equal.
  • one end of the wave rod is positioned on the balloon body on one side of the recessed portion, the other end is positioned at the recessed portion, and the wave rod is positioned on the balloon body
  • the length of is not less than 1/2 of the full length of the pole.
  • all the wave rods are positioned on the balloon body.
  • the medical balloon, balloon catheter and medical device of the present invention have the following advantages:
  • the medical balloon of the present invention includes a balloon body and a concave portion formed on the outer surface of the balloon body.
  • the concave portion improves the bending performance of the medical balloon, thereby improving its bending ability to better adapt to blood vessels Its shape reduces the damage of blood vessels caused by excessive tearing of blood vessels.
  • Figure 1 is a schematic diagram of the structure of a diseased blood vessel
  • FIG. 2 is a schematic diagram of a cylindrical medical balloon in the prior art being delivered into a diseased blood vessel;
  • Figures 3a and 3b are structural schematic diagrams of a medical balloon provided according to an embodiment of the present invention.
  • the recessed portion shown in Figure 3a includes a plurality of sub-recessed portions spaced along the circumference of the balloon body, as shown in Figure 3b.
  • the depression is a continuous annular groove;
  • Figure 4 is a schematic diagram of the medical balloon shown in Figure 3b when it is delivered into a diseased blood vessel;
  • FIG. 3b are schematic diagrams of various deformed structures of the medical balloon shown in FIG. 3b;
  • Fig. 6 is a schematic diagram of the bending principle of the medical balloon shown in Fig. 3b, in which only a circle of recesses is shown;
  • Fig. 7 is a schematic diagram of the bending principle of the medical balloon shown in Fig. 5c;
  • FIG. 8a and 8b are structural schematic diagrams of a medical balloon provided according to another embodiment of the present invention, wherein the balloon body of the medical balloon shown in FIG. 8a is formed with a spiral structure recessed portion, as shown in FIG. 8b Two sub-recesses in a spiral structure are formed on the balloon body of the medical balloon of, and the rotation directions of the two sub-recesses are the same;
  • Fig. 9 is a schematic structural diagram of a medical device provided according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of the positional relationship between the stent and the medical balloon in the medical device according to an embodiment of the present invention.
  • Fig. 11 is an enlarged schematic diagram of C in Fig. 10;
  • Fig. 12 is a schematic diagram of another positioning method of the stent of the medical device in Fig. 10;
  • FIG. 13 is a schematic diagram of the positional relationship between the stent and the medical balloon in the medical device according to another embodiment of the present invention.
  • Fig. 14 is an enlarged schematic view of D in Fig. 13.
  • L 1 the axial maximum length of the recess
  • L 2 the axial length of the sub-balloon
  • H the depth of the recess.
  • proximal and distal refer to the relative position, relative position, and direction of elements or actions relative to each other from the perspective of the doctor using the medical balloon, although the “proximal” and “distal”
  • end is not restrictive, but the “proximal” usually refers to the end of the medical balloon that is close to the doctor during normal operation, and the “distal” usually refers to the end that first enters the blood vessel in the patient's body.
  • all size descriptions in this article refer to the size of the medical balloon when it is in an expanded state, unless the content clearly indicates otherwise.
  • circumferential refers to the direction surrounding the axis of the medical balloon and at right angles, acute angles or obtuse angles to the axis of the medical balloon, that is, on any plane that is not parallel to the axis of the medical balloon, unless The content is clearly stated separately.
  • the core idea of the present invention is to provide a medical balloon.
  • the medical balloon includes a balloon body and a recess formed on the outer surface of the balloon body.
  • the concave portion improves the bending performance of the medical balloon, thereby improving the bending ability of the balloon without affecting the supporting performance of the balloon to better adapt to the shape of the blood vessel, and reducing the damage of the blood vessel caused by excessive tearing of the blood vessel .
  • the balloon body of the medical balloon 10 includes at least two interconnected sub-balloons 11 (five sub-balloons 11 are illustrated in the figure).
  • the balloon 11 is preferably integrally formed, and at least one circle of recesses 12 is formed at the connection position of the two adjacent sub-balloons 11 (four circles of recesses are illustrated in the figure), and at least one circle of the recesses 12 is formed. It extends along the circumferential direction of the balloon body, that is, the extending direction of the recess 12 is at a right angle, an acute angle or an obtuse angle with the axial direction of the balloon body.
  • the concave portion 12 may also be in the form of a non-full circle of less than 360°. For example, the concave portion 12 may occupy half or three-quarters of a circumferential circle.
  • the recess 12 is a circle to further illustrate the medical balloon of the present invention, but those skilled in the art should be able to modify the following description to apply it to the case where the recess 12 is not a circle.
  • the medical balloon 10 is made of elastic polymer materials such as polyamide fiber (nylon), block polyetheramide elastomer (PEBAX), thermoplastic polyurethane elastomer (TPU), etc.
  • a recess 12 is formed adjacent to the connection position of the two sub-balloons 11, so that the medical balloon 10 forms a multi-segment structure.
  • the outer diameter of the medical balloon 10 at the connection point is reduced, thereby reducing the pressure of the medical balloon.
  • the outer diameter in the grip state improves the compliance during delivery and the ability to reach the distal blood vessel; on the other hand, the stretching site of the medical balloon 10 is increased, thereby increasing the stretching range of the medical balloon 10 and improving the medical balloon
  • the bending performance of the capsule 10 improves its bending ability.
  • a circle of the recesses 12 may include at least two sub-recesses 121, and the at least two sub-recesses 121 are arranged at a circumferential interval at the junction of two adjacent sub-balloons 11.
  • the at least two sub-recesses 121 may be arranged along a circumference on a plane perpendicular to the axis of the medical balloon 10 to form a circular arrangement, or on a plane that is not perpendicular and parallel to the axis of the medical balloon 10
  • the circle is arranged to form an elliptical arrangement.
  • the bending ability of the medical balloon 10 at the position where the concave portion 12 is provided is enhanced, thereby improving the bending ability of the medical balloon 10 at the position prescribed by the concave portion 12.
  • the shape and number of the recesses 12 provided on the medical balloon 10 are not limited, as long as they can achieve the purpose of improving the bending performance of the medical balloon 10.
  • a circle of the concave portion 12 can also be a continuous annular groove, and the continuous annular groove can be perpendicular to the axis of the medical balloon 10 (that is, the plane where the continuous annular groove is located). It is perpendicular to the axis of the medical balloon 10), or not perpendicular to the axis (that is, the plane where the continuous annular groove is located is not perpendicular and not parallel to the axis of the medical balloon 10). In this way, the bending performance of the medical balloon 10 in the entire circumferential direction is improved, so that the medical balloon 10 can obtain better bending performance in any direction, so that it is not necessary to set the bending direction of the blood vessel 20 during use.
  • the delivery position of the medical balloon 10 is determined, which reduces the operational difficulty of medical staff when using the medical balloon 10.
  • At least two circles of recesses 12 are formed on the outer surface of the balloon body, so that the medical balloon 10 is axially divided into more of the sub-balloons 11 (ie, segments). ), so that the medical balloon 10 has better bending performance in multiple regions, and can simultaneously comply with the bending of adjacent blood vessel segments in different directions or different arcs.
  • the proximal end of the medical balloon 10 is connected to a catheter 30, and is sent into the blood vessel 20 through the catheter 30 and then expanded.
  • the blood vessel 20 is stretched and its radius of curvature r is Increase to ⁇ .
  • the medical balloon 10 has better bending performance and its adaptability to the shape of the blood vessel 20 is improved, the radius of curvature ⁇ of the blood vessel 20 at this time is smaller than the radius of curvature of the blood vessel 20 when a cylindrical medical balloon is used. Value ⁇ , thereby reducing the possibility of the blood vessel 20 being torn or spasm being excessively torn.
  • the force generated when the medical balloon 10 is bent is transmitted to the connection point between the medical balloon 10 and the catheter 30. Because the medical balloon 10 has good adaptability to the blood vessel 20, the vicinity of the connection point is reduced. The stress is concentrated, thereby avoiding the connection point of the medical balloon 10 and the catheter 30 from being discounted.
  • the size of the recessed portion 12 is selected according to actual conditions.
  • the maximum dimension L 1 of each circle of recessed portion 12 along the axial direction of the medical balloon 10 (the maximum axial length L of the recessed portion 12 1 ) Generally, it is not greater than 3 mm.
  • the minimum value of the dimension H (the depth H of the recess 12) of the recess 12 in the radial direction of the medical balloon 10 can be 0.1 mm, and the maximum value can be no more than half of the radial dimension of the medical balloon 10.
  • the axial dimension L 2 of the sub-balloon 11 (the axial length of the working section of the sub-balloon, that is, the axial length of the straight section of the sub-balloon) is based on the size of the medical balloon 10 and the size of the sub-balloon 11 It depends on the number.
  • the form of the recessed portion 12 can have multiple choices.
  • the recessed portion 12 can be a single V-shaped viewed from the axial section of the medical balloon 10 , Trapezoid, square or arc, etc., and each circle of recesses 12 can be a single shape or a combination of multiple shapes.
  • the recesses 12 shown in Figure 5d can be considered as a combination of half trapezoid and half square.
  • the recessed portion 12, here can also be regarded as a right-angled trapezoidal recessed portion 12.
  • the medical balloon 10 includes at least two circles of depressions 12
  • the at least two circles of depressions 12 may adopt the same or different forms.
  • the three circles of depressions 12 shown in FIG. 5e adopt three forms, respectively.
  • the shape of the recess 12 on the axial section of the medical balloon 10 is preferably a trapezoid or a square.
  • 6 is a schematic diagram of the bending of the medical balloon 10 when the shape of the recess 12 is V-shaped.
  • FIG. 7 is a schematic diagram of the bending of the medical balloon 10 when the shape of the recess 12 is a trapezoid.
  • the medical balloon 10 is in the two trapezoids. Stretching at the shoulder line, therefore, compared with the V-shaped recessed portion, the trapezoidal recessed portion 12 has double the stretching point, and the trapezoidal recessed portion 12 has a larger surface area and space than the V-shaped recessed portion.
  • the recessed portion 12 is larger, which is also more favorable for the medical balloon 10 to squeeze into the recessed portion 12.
  • the trapezoidal or square concave portion 12 has a better effect on improving the bending performance of the medical balloon 10.
  • the recess 12 can be processed into a square or trapezoid shape, and the depth H of the recess 12 should be as large as possible.
  • the square or trapezoidal recess 12 is also easier to process.
  • the medical balloon 10 in the embodiment of the present invention is blow-molded by a medical balloon mold with grooves, and the specific method is a well-known technology in the art, so it will not be repeated here.
  • the balloon body of the medical balloon 10 has opposite proximal and distal ends. From the proximal end to the distal end, after the medical balloon 10 is expanded, the radial direction of the balloon body The size can be completely the same, for example, when the medical balloon 10 is used to expand the stent; after the medical balloon 10 is expanded, the radial size of the balloon body can also be different, for example, to match For blood vessels whose diameters gradually decrease from the proximal end to the distal end, after the medical balloon 10 is expanded, the outer diameter of the balloon body is correspondingly tapered from the proximal end to the distal end.
  • the recessed portion 12 spirally surrounds along the axis of the balloon body to form a spiral structure.
  • the recessed portion 12 in this embodiment may be a continuous spiral groove; or, as shown in FIG. 8b, the recessed portion 12 may include multiple sub-recesses 121, such as two sub-recesses.
  • the two sub-recesses 121 have the same rotation direction and are arranged at intervals along the axial direction of the balloon body; or, the recessed portion 12 may include at least two sub-recesses 121, for example, two sub-recesses 121.
  • the rotation directions of the two sub-recesses 121 are opposite and they communicate with each other.
  • the rotation directions of the two adjacent sub-recesses 121 are opposite; of course, The sub-recesses 121 with opposite rotation directions may also be distributed at intervals along the axial direction of the balloon body.
  • the pitch of the spiral recess 12 may be the same value, or may be set in different sections. value.
  • the recessed portion 12 may be a single V-shaped, trapezoidal, square, arc, etc., or a combination of various shapes.
  • the embodiment of the present invention also provides a balloon catheter including the aforementioned medical balloon 10, such as an integral exchange balloon catheter or a quick exchange balloon catheter, the balloon catheter 10 also includes a catheter 30.
  • the catheter 30 is connected to the proximal end of the medical balloon 10.
  • an embodiment of the present invention also provides a medical device including the balloon catheter. 10 and 11 in detail, the medical device further includes a stent 40 crimped on the medical balloon 10, the stent 40 is a tube network structure and has at least two stent rings 41, at least Two stent rings 41 are arranged at intervals along the axial direction, and each stent ring 41 is formed by a plurality of poles 411 arranged in a ring around the axis of the stent 40, and at the same time, two adjacent stent rings 41 are connected by a connecting rod 42; Wherein, the wave rod 411 includes a straight rod section, and a plurality of wave rods 411 are connected to form a stent ring 41, so the stent ring 41 has poor bending performance in the axial direction.
  • the connecting rod 42 can be n-shaped, s-shaped or w-shaped, and has good bending performance in the axial direction.
  • the entire stent 40 is wrapped around the outside of the medical balloon 10. When the medical balloon 10 expands, the medical balloon 10 props up the stent 40 from the inside of the stent 40 to open the stent 40.
  • the positioning positions of the wave rod 411 and the connecting rod 42 relative to the medical balloon 10 are not strictly limited.
  • the medical balloon 10 and the stent 40 are in an expanded state, at least a part of the rod 411 is positioned on the balloon body, so that when the medical balloon 10 is expanded
  • the rod 411 of the stent 40 can be stretched by the balloon body and maintain its support in the radial direction to achieve the purpose of treating diseased blood vessels.
  • the connecting rod 42 can be positioned at the recess 12 or on the balloon body.
  • the optional positioning method of the stent 40 is introduced. It should be understood that the following position descriptions are based on the positional relationship between the medical balloon 10 and the stent 40 in an expanded state.
  • a part of the rod 411 is positioned on the sub-balloon 11 (that is, the balloon body).
  • the sub-balloon 11 that is, the balloon body.
  • Figures 10 and 11 show the first positioning method of the wave rod 411: the two ends of the wave rod 411 are respectively pressed and held on each side.
  • the sub-balloons 11 on both sides of the recessed portion 12 are used to prevent the probe 411 from falling into the recessed portion 12 when the medical balloon 10 is expanded, thereby restricting the full opening of the stent 40.
  • the length of the pole 411 along the axial direction of the medical balloon 10 is generally 2-10 mm, and the length of the pole 411 is greater than the axial maximum dimension L1 of the recess 12 after the expansion of the medical balloon 10
  • the length is at least 1 mm.
  • the length of each end is not less than 0.5 mm.
  • the pole 411 shows a second positioning method of the pole 411: one end of the pole 411 is pressed and held on the sub-balloon 11, the other end is suspended on the recess 12, and the pole 411 is positioned at The length of the sub-balloon 11 is at least half the length of the wave rod 411, and the connecting rod 42 can be positioned at the recess 12 at this time.
  • the medical balloon 10 expands at the bend of the blood vessel 20, the concave portion 12 stretches and bends accordingly.
  • the overall bending of the medical balloon 10 transmits the bending force to the connecting rod 42 and drives the connecting rod. 42 Stretching and bending drive the bracket 40 to bend as a whole
  • the wave rods 411 are all positioned on the sub-balloon 11, and the connecting rod 42 is positioned on The recess 12 is as shown in Figs. 13 and 14.
  • the connecting rod 42 is stretched and bent synchronously with the concave portion 12 of the medical balloon 10, and the wave rod 411 can be stably expanded by the expanded sub-balloon to fully expand the stent To achieve the purpose of supporting the blood vessel wall.
  • the concave portion 12 spirally surrounds the axis of the balloon body to form a spiral structure, as shown in FIG. 8a, because the concave portion 12 of the spiral structure is always not perpendicular to the axis of the balloon body Therefore, the risk of insufficient opening of the stent 40 due to the plunger 411 or the connecting rod 42 of the stent 40 perpendicular to the axis of the balloon body falling into the recess 12 can be reduced.
  • the recessed portion 12 may include a plurality of sub-recesses 121, such as two sub-recesses 121 shown in FIG. 8b. The two sub-recesses 121 have the same rotation direction and are along the axis of the balloon body.
  • the stent 40 is arranged to be spaced apart, so that while reducing the risk of insufficient opening of the stent 40, the contact area between the stent and the balloon at the interval between the two sub-recesses 121 can also be increased, thereby further improving the success rate of opening the stent 40.
  • the medical device provided in this embodiment may include a medical device used for the treatment of stenosis lesions in vascular locations such as intracranial, coronary or peripheral blood vessels, may also include a medical device used for the treatment of aneurysm lesions, and may also include other tubes used for the biliary tract. Medical device for the treatment of cavitary lesions.
  • the depression 12 is formed on the outer surface of the balloon body, so that the medical balloon 10 has better bending performance, thereby improving the effect of the medical balloon 10 on the blood vessel 20.
  • the compliance of the medical balloon 10 prevents excessive tearing of the blood vessel 20 during the expansion process of the medical balloon 10 to cause blood vessel damage.
  • the shapes and sizes of these recesses 12 may be the same or different.
  • the axial cross-sectional shape may be the same or different.
  • the concave portion 12 is formed by a continuous annular groove
  • the axial cross-sectional shape of the annular groove may be a combination of different shapes, or a single shape.
  • the recess 12 is formed by a plurality of sub-recesses 121 arranged at intervals
  • the shape of each sub-recess 121 may be the same or different.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Child & Adolescent Psychology (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Vascular Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un ballonnet médical (10), un cathéter à ballonnet et un dispositif médical (30). Le ballonnet médical (10) comprend un corps de ballonnet et des évidements (12) formés dans une surface externe du corps de ballonnet. L'avantage de l'invention réside dans le fait qu'au moyen des évidements (12), les performances de flexion du ballonnet médical (10) sont améliorées, et l'adaptabilité du ballonnet médical (10) à un vaisseau sanguin (20) est améliorée, ce qui permet de réduire la déchirure du vaisseau sanguin (20) lorsque le ballonnet médical (10) est posé dans une partie courbée du vaisseau sanguin (20), de façon à empêcher que le vaisseau sanguin (20) ne soit endommagé.
PCT/CN2020/096642 2019-06-18 2020-06-17 Ballonnet médical, cathéter à ballonnet et dispositif médical WO2020253739A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910528527.4 2019-06-18
CN201910528527.4A CN112089951A (zh) 2019-06-18 2019-06-18 一种医用球囊、球囊导管及医疗装置

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WO2020253739A1 true WO2020253739A1 (fr) 2020-12-24

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Publication number Priority date Publication date Assignee Title
CN113877042B (zh) * 2021-09-26 2023-07-11 广东博迈医疗科技股份有限公司 医用球囊、球囊导管以及医疗装置

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CN102512747A (zh) * 2011-12-27 2012-06-27 微创医疗器械(上海)有限公司 药物洗脱球囊导管
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