WO2021175095A1 - Extrémité, cathéter d'imagerie et dispositif médical - Google Patents

Extrémité, cathéter d'imagerie et dispositif médical Download PDF

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Publication number
WO2021175095A1
WO2021175095A1 PCT/CN2021/075598 CN2021075598W WO2021175095A1 WO 2021175095 A1 WO2021175095 A1 WO 2021175095A1 CN 2021075598 W CN2021075598 W CN 2021075598W WO 2021175095 A1 WO2021175095 A1 WO 2021175095A1
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WIPO (PCT)
Prior art keywords
cavity
tip
distal end
opening
axis
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PCT/CN2021/075598
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English (en)
Chinese (zh)
Inventor
李晓春
王继伟
高端贵
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南微医学科技股份有限公司
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Publication of WO2021175095A1 publication Critical patent/WO2021175095A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes

Definitions

  • the present disclosure relates to the technical field of medical devices, and in particular to a tip, an imaging catheter, and medical equipment.
  • the direct bile duct subscopy system via duodenal endoscopy has gradually been recognized by the market. Studies have shown that the biliary subscopy system has no increase in the incidence of complications compared with ERCP, further confirming its safety. Compared with the traditional ERCP operation, the biliary subscope system observes the lesions and stones in the biliary tract through its own camera, which greatly improves the accuracy of the treatment of biliary diseases. When the biliary subscopy system is used clinically, surgical instruments can be used in conjunction with its working cavity to perform surgical treatment.
  • the angle of view of the built-in camera is relatively narrow, and the imaging catheter does not enter the human biliary tract smoothly, which affects work efficiency.
  • the purpose of the present disclosure includes, for example, providing a terminal that can effectively improve the above-mentioned technical problems.
  • the objective of the present disclosure also includes providing an imaging catheter, which includes the above-mentioned tip and has all the functions of the tip.
  • the purpose of the present disclosure also includes providing a medical device, which includes the aforementioned imaging catheter and has all the functions of the imaging catheter.
  • the embodiment of the present disclosure provides a tip, the distal end surface of the tip is provided with a flat area and a curved area, and the curved area is smooth from the periphery of the flat area toward the proximal end of the tip transition;
  • the tip has a first cavity, a second cavity, and at least two third cavities, the first cavity is configured to accommodate a camera module, and the distal end of the first cavity penetrates the plane Area to form a first opening, the first opening is located at the most distal end of the tip, the second cavity is configured to allow working instruments to pass through, and the distal end of the second cavity penetrates the A curved area to form a second opening, each of the third cavities is configured to pass a traction wire to guide the tip to move along the extension direction of the traction wire, and the distal end of the third cavity Pass through the curved area to form a third opening;
  • the third openings are distributed on both sides of the reference line; wherein, the reference line is the line between the center of the first opening and the center of the second opening, and the reference line is along the The radial extension of the tip.
  • the outer contour of the curved surface area is elliptical.
  • a plane passing through the outer contour of the curved surface area is a first reference surface
  • a plane coplanar with the planar area is a second reference surface, between the first reference surface and the second reference surface Form an included angle a, 30° ⁇ a ⁇ 60°.
  • the curved area is a convex spherical surface.
  • the axis of the first cavity is spaced from the axis of the tip, and the axis of the second cavity is spaced from the axis of the tip.
  • the number of the third openings is four, and the four third openings are respectively located at the four vertices of the rectangle.
  • the tip is further provided with at least two fourth cavities, the distal end of each of the fourth cavities penetrates the curved area to form a fourth opening, and both sides of the reference line are The fourth openings are distributed, and the fourth cavity is configured to allow the injection solution to pass through and to allow the injection solution to flow out from the fourth opening.
  • two third openings are respectively provided on both sides of the reference line, and one fourth opening is respectively provided on both sides of the reference line. In the same side of the reference line, The fourth opening is located between the two third openings.
  • the axis of the first cavity, the axis of the second cavity, the axis of the third cavity, and the axis of the fourth cavity are all parallel to the axis of the tip.
  • the embodiment of the present disclosure also provides an imaging catheter, which includes a tube body and the aforementioned tip, the tube body is provided with a fifth cavity, a sixth cavity, and a seventh cavity.
  • the distal end is connected to the proximal end of the tip, and the distal end of the fifth lumen communicates with the proximal end of the first lumen, and the distal end of the sixth lumen is connected to the second lumen.
  • the proximal end of the channel is in communication, and the distal end of the seventh lumen is in communication with the proximal end of the third lumen.
  • the imaging catheter further includes a camera module and a wire, the camera module is located in the first cavity, and the wire passes through the fifth cavity and the first cavity, and The distal end of the wire is connected to the camera module.
  • the distal end surface of the camera module is coplanar with the plane area.
  • the embodiments of the present disclosure also provide a medical device, which includes the aforementioned imaging catheter.
  • the beneficial effects of the tip, imaging catheter, and medical equipment provided by the embodiments of the present disclosure include, for example:
  • the embodiments of the present disclosure provide a tip, and the curved area smoothly transitions from the periphery of the flat area toward the proximal end of the tip, that is, the flat area is located at the farthest end of the tip.
  • the distal end of the first cavity penetrates the plane area, the first opening is also located at the far end of the tip, and the camera module is located in the first cavity. In this way, the curved area will not interfere with the camera module located in the first cavity.
  • the viewing angle is obstructed, which can effectively increase the viewing angle of the camera module.
  • the resistance of the tip in the process of entering the biliary tract is smaller, which can make the process of the tip entering the biliary tract smoother.
  • third openings are distributed on both sides of the reference line, and the third cavity is configured to pass through the traction wire, which can make the tip move along the extension direction of the traction wire, reduce the probability that the tip touches other objects, and make the tip The head can reach the target position more comfortably, improving work efficiency.
  • the embodiments of the present disclosure also provide an imaging catheter, including the aforementioned tip.
  • the imaging catheter can also effectively increase the angle of view of the camera module, and can enter the biliary tract more smoothly, thereby effectively improving work efficiency.
  • the embodiments of the present disclosure also provide a medical device, including the aforementioned imaging catheter, which can effectively increase the field of view of the camera module, and enable the imaging catheter to enter the biliary tract more smoothly, thereby effectively improving work efficient.
  • FIG. 1 is a schematic diagram of the structure of an imaging catheter and a working instrument provided by an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of an imaging catheter provided by an embodiment of the disclosure.
  • FIG. 3 is a schematic structural diagram of a tube provided by an embodiment of the disclosure.
  • FIG. 4 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure from a first perspective
  • FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure from a second perspective
  • FIG. 6 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure from a third perspective
  • FIG. 7 is a schematic structural diagram of a terminal provided by an embodiment of the disclosure from a fourth perspective
  • FIG. 8 is a schematic structural diagram of the terminal provided by the practical example of the present disclosure from a fifth perspective;
  • FIG. 9 is a schematic diagram of the structure of the terminal provided by the practical example of the present disclosure from a sixth perspective.
  • Icon 1-imaging catheter; 11-tube body; 111-fifth lumen; 112-sixth lumen; 113-seventh lumen; 114-eighth lumen; 12-tip; 121-planar area; 122-curved area; 123-first cavity; 124-second cavity; 125-first opening; 126-second opening; 127-third opening; 128-fourth opening; 129-reference line; 13- Camera module; 14-wire; 2-working equipment.
  • this embodiment provides a medical device, the medical device includes an imaging catheter 1 and a working instrument 2.
  • the imaging catheter 1 includes a tube body 11 and a tip 12, and the tip 12 is provided with a second cavity. 124.
  • the tube body 11 is provided with a sixth cavity 112, and the distal end of the tube body 11 is connected to the proximal end of the tip 12, so that the distal end of the sixth cavity 112 communicates with the proximal end of the second cavity 124 to form a working Cavity.
  • the worker operates the proximal end of the working instrument 2 to make the working instrument 2 pass through the working cavity and reach the preset position.
  • the working instrument 2 may be: a sampling forceps, a mesh basket, a snare, etc., and the staff can use different working instruments 2 to perform corresponding surgical treatments.
  • the terminal 12 can be made of metal materials or polymer materials.
  • the end 12 can be processed by machining, or can be formed by injection molding or powder metallurgy.
  • the imaging catheter 1 further includes a camera module 13 and a wire 14, the tip 12 also has a first cavity 123, and the tube body 11 also has a fifth cavity 111.
  • the proximal end of a channel 123 communicates with the distal end of the fifth channel 111 to form an imaging channel.
  • the camera module 13 is installed in the first cavity 123, and the camera module 13 is located at the distal end of the first cavity 123.
  • the wire 14 passes through the camera cavity, and the distal end of the wire 14 is connected to the camera module 13.
  • the medical device further includes a handle assembly, the proximal end of the wire 14 is connected to the handle assembly, and the staff can control the working state of the camera module 13 through the handle assembly.
  • the proximal and distal ends referred to in this article refer to the staff using the device.
  • the end relatively close to the staff is the proximal end
  • the end relatively far away from the staff is the distal end.
  • the left end of the tube body 11 is the proximal end
  • the right end of the tube body 11 is the distal end
  • the left end of the tip 12 is the proximal end
  • the right end of the tip 12 is the distal end.
  • the staff can observe the lesions and firmness in the biliary tract with the help of the camera module 13.
  • the camera module 13 and the lighting device share the same cavity, that is, the first cavity 123 is also equipped with an illuminating device, and the illuminating device is configured to increase the brightness of the surrounding environment to facilitate the camera module.
  • Group 13 performs image acquisition.
  • the illuminating device and the camera module 13 may not share the same cavity, that is, a cavity configured to accommodate the illuminating device may be separately provided on the end 12.
  • the distal end surface of the tip 12 has a flat area 121 and a curved area 122, and the curved area 122 is smooth from the periphery of the flat area 121 toward the proximal end of the tip 12 transition.
  • the plane area 121 is located at the farthest end of the tip 12.
  • the distal end of the first lumen 123 penetrates the plane area 121, and a first opening 125 is formed on the plane area 121. It can be understood that the first opening 125 is also located at the farthest end of the tip 12.
  • the camera module 13 is located inside the first cavity 123, and the camera module 13 can observe the specific conditions of the external biliary tract through the first opening 125.
  • the flat area 121 is located at the far end of the tip 12 so that the curved area 122 will not hinder the viewing angle of the camera module 13, which can effectively increase the camera module 13’s view angle.
  • the field of view angle can obtain a larger range of images.
  • the camera module 13 in actual use, if the camera module 13 extends out of the first opening 125, the camera module 13 will contact the biliary tract tissue and cause damage to the biliary tract tissue. Please refer to FIG. 2, FIG. 4 and FIG. 5.
  • the distal end surface of the camera module 13 is coplanar with the plane area 121. In this way, under the premise that the camera module 13 does not extend out of the first opening 125, the camera module 13 can obtain the largest field of view angle.
  • the resistance of the tip 12 when entering the biliary tract is reduced, so that the tip 12 can enter the biliary tract more smoothly.
  • the tip 12 also has a third lumen
  • the tube body 11 also has a seventh lumen 113
  • the distal end of the third lumen penetrates the curved area 122 to A third opening 127 is formed, and the proximal end of the third cavity communicates with the distal end of the seventh cavity 113 to form a traction cavity.
  • the traction wire may be set on the preset path first, and then pass through the third opening 127, so that the traction wire passes through the traction cavity.
  • the tube body 11 and the tip 12 can move along the extension direction of the traction wire, which can effectively reduce the probability that the tip 12 and the tube body 11 touch other tissues, so that the tip 12 and The tube body 11 can reach the target position more smoothly, thereby effectively improving work efficiency.
  • the distal end of the second cavity 124 penetrates the curved area 122 to form a second opening 126. It can be understood that the second opening 126 is close to the first opening 125 At the proximal end of the tip 12, the working instrument 2 located in the second cavity 124 can pass through the second opening 126.
  • the outer contour of the first opening 125 is circular
  • the outer contour of the second opening 126 is elliptical
  • the line between the center of the first opening 125 and the center of the second opening 126 is the reference line 129
  • the reference line 129 extends along the radial direction of the end 12, and third openings 127 are distributed on both sides of the reference line 129.
  • the number of third openings 127 is four, and correspondingly, the number of third cavities is four, and the four third openings 127 correspond to the four third cavities one-to-one.
  • the four third openings 127 are respectively arranged at the four vertices of the rectangle. In this way, when the four third cavities are equipped with traction wires, it has better guiding performance, and at the same time, it can also make the end 12 and the tube body 11 move more stably along the extension direction of the traction wires.
  • the number of seventh channels 113 is also four, and the four seventh channels 113 correspond to the four third channels one-to-one.
  • the four third openings 127 may also be respectively provided at the four vertices of the trapezoid.
  • the trapezoid may be an isosceles trapezoid or a right-angled trapezoid, or the four third openings 127 may also be separately provided. Set at the four vertices of other quadrilaterals.
  • the tip 12 also has a fourth cavity.
  • the tube body 11 also has an eighth cavity 114, and the distal end of the fourth cavity penetrates the curved area 122 , To form a fourth opening 128.
  • the proximal end of the fourth cavity communicates with the distal end of the eighth cavity 114 to form a liquid injection cavity.
  • the liquid is ejected from the fourth opening 128 through the liquid injection channel.
  • the liquid can not only clean the surrounding biliary tissues, but also clean the distal end surface of the camera module 13.
  • the distal end surface of the camera module 13 is coplanar with the plane area 121, this also facilitates the liquid cleaning of the distal end surface of the camera module 13.
  • the number of fourth openings 128 is two.
  • the number of fourth cavities is also two.
  • Two fourth cavities and two fourth openings 128 are one by one. correspond.
  • the number of eighth channels 114 is also two, and the two eighth channels 114 correspond to the two fourth channels one-to-one.
  • fourth openings 128 are distributed on both sides of the reference line 129. In this way, the liquid ejected from the two fourth openings 128 can clean tissues in different directions. Specifically, on the same side of the reference line 129, one fourth opening 128 is located between the two third openings 127.
  • the number of third cavities can also be one, two, or three, and the number of fourth cavities can also be one, three, or four.
  • the first cavity 123, the second cavity 124, the third cavity, and the fourth cavity are all round holes, and the end 12 has a cylindrical structure.
  • the axis of the first cavity 123 and the axis of the second cavity 124 are both spaced apart from the axis of the tip 12.
  • the axis of the first cavity 123, the axis of the second cavity 124, the axis of the third cavity, and the axis of the fourth cavity are all parallel to the axis of the tip 12.
  • the curved area 122 can effectively reduce the damage to the biliary tract by the distal end of the tip 12 when the tip 12 enters the biliary tract.
  • the curved area 122 is a convex spherical surface. In this way, the smoothness of the surface of the curved area 122 can be enhanced, and damage to the biliary tract can be further reduced.
  • the outer contour of the curved area 122 is an ellipse. Specifically, the outer contour of the curved area 122 is cut by the first reference plane (the plane pointed to by A in FIG. 6). form. In this way, the sizes of the second opening 126, the third opening 127, and the fourth opening 128 can be effectively increased.
  • increasing the size of the second opening 126 is beneficial for the work tool 2 to pass through the first opening 125.
  • Increasing the size of the third opening 127 facilitates the passage of the traction wire through the third opening 127.
  • Enlarging the fourth opening 128 is beneficial to increase the amount of liquid ejected from the fourth opening 128.
  • the plane passing through the plane area 121 is taken as the second reference plane (the plane pointed by xoy in FIG. 6), and the first reference plane (the plane pointed by A in FIG. 6) is The angle between the two reference planes (the plane pointed by xoy in Figure 6) is a, 30° ⁇ a ⁇ 60°.
  • the overall curved area 122 starts from the outer contour of the curved area 122 (the arc pointed to by r in FIG. 6) along the arcs cd, ef, gh and The curved surface fitted by ij gradually transitions to the arc b smoothly. in:
  • the outer contour of the curved area 122 is the arc pointed by r in FIG. 6;
  • the arc b is an arc with o'as the center on the plane xoy.
  • the center of the arc b and the center of the first opening 125 are the same point, and the diameter of the arc b is the first cavity. 70% to 130% of the diameter of 123, the plane xoy is parallel to the above-mentioned horizontal plane, and o'is the intersection of the axis of the first cavity 123 (the straight line pointed to by z'in Fig. 7) and the plane xoy;
  • the arc cd is a smooth arc on the plane B, the point c is located on the outer contour of the curved area 122 (the arc pointed to by r in Figure 6), the point d is on the arc b, and the plane B is on the first The plane of the axis of the cavity 123 (the straight line pointed to by z'in Fig. 7);
  • the arc ef is a smooth arc on the plane B, the point e is located on the outer contour of the curved surface area 122 (the arc pointed to by r in Figure 6), and the point f is located on the arc b
  • the arc ef and the arc cd are set relative to each other;
  • the arc gh is a smooth arc from point g to point h on the plane yoz, point g is the intersection point of the plane yoz and the outer contour of the curved surface area 122 (the arc pointed to by r in Figure 6), and point h is the plane yoz
  • point g is the intersection point of the plane yoz and the outer contour of the curved surface area 122 (the arc pointed to by r in Figure 6)
  • point h is the plane yoz
  • the intersection with the arc b, the plane yoz is perpendicular to the plane xoy and the plane zox at the same time;
  • the arc ij is a smooth arc from point i to point j on the plane yoz.
  • Point i is the intersection of the plane yoz and the outer contour of the curved surface area 122 (the arc pointed to by r in FIG. 6), and point j is the plane yoz. Intersection point with arc b.
  • t 1 is the wall thickness between the first cavity 123 and the outer wall of the tip 12
  • t 2 is the wall thickness between the first cavity 123 and the second cavity 124
  • t 3 is the second cavity 124 between the outer wall and the wall thickness of the tip 12
  • ⁇ 1 is the diameter of the second lumen 124.
  • the arc cd is an elliptical arc with a straight line ck passing through point k as the major axis radius, and a straight line dk passing through the point k as the minor axis radius, where ,
  • the point k is the intersection of the straight line ck and the straight line dk
  • the straight line ck is a straight line perpendicular to the plane yz through the k point
  • the straight line dk is a straight line perpendicular to the plane xoy through the k point.
  • the arc ef is an elliptical arc with a straight line em passing through point m as the major axis radius, and a straight line fm passing through the point m as the minor axis radius, where m point Is the intersection of the straight line em and the straight line fm, the straight line em is the straight line that passes through the m point and is perpendicular to the plane yoz, and the straight line fm is the straight line that passes through the m point and is perpendicular to the plane xoy.
  • the arc gh is an elliptical arc with a straight line gn passing n points as the major axis radius, and a straight line hn passing n points as the minor axis radius, where , The point n is the intersection of the straight line gn and the straight line hn, the straight line gn is a straight line perpendicular to the plane zox through the n point, and the straight line hn is a straight line perpendicular to the plane xoy through the n point.
  • the arc ij is an elliptical arc with a straight line ip passing point p as the major axis radius, and a straight line jp passing point p as the minor axis radius, where ,
  • the point p is the intersection of the straight line ip and the straight line jp, the straight line ip is a straight line perpendicular to the plane zox through the point p, and the straight line jp is a straight line perpendicular to the plane xoy through the point p.

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Abstract

L'invention concerne une extrémité (12), un cathéter d'imagerie (1), et un dispositif médical, appartenant au domaine technique des instruments médicaux. La surface d'extrémité distale de l'extrémité (12) est pourvue d'une zone plane (121) et d'une zone de surface incurvée (122), et la zone de surface incurvée (122) est en transition douce dans une direction allant de la périphérie de la zone plane (121) à l'extrémité proximale proche de l'extrémité (12). L'extrémité (12) est pourvue d'une première cavité (123) et d'une seconde cavité (124), la première cavité (123) est configurée pour recevoir un module de caméra (13), l'extrémité distale de la première cavité (123) pénètre à travers la zone plane (121) pour former une première ouverture (125), et la première ouverture (125) est située à l'extrémité la plus éloignée de l'extrémité (12) ; la seconde cavité (124) est configurée pour permettre à un instrument de travail (2) de pénétrer à travers, et l'extrémité distale de la seconde cavité (124) pénètre à travers la zone de surface incurvée (122) pour former une seconde ouverture (126). La surface incurvée (122) de l'extrémité (12) n'obstrue pas l'angle de vue du module de caméra (13) situé dans la première cavité (123), et l'angle de vue du module de caméra (13) peut être efficacement augmenté.
PCT/CN2021/075598 2020-03-04 2021-02-05 Extrémité, cathéter d'imagerie et dispositif médical WO2021175095A1 (fr)

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CN202020258458.8U CN211834301U (zh) 2020-03-04 2020-03-04 端头、成像导管和医疗设备

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2023083206A1 (fr) * 2021-11-11 2023-05-19 微创优通医疗科技（上海）有限公司 Sonde de cathéter médical, cathéter médical, et dispositif et système médicaux

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CN211834301U (zh) * 2020-03-04 2020-11-03 南微医学科技股份有限公司 端头、成像导管和医疗设备
CN114949553A (zh) * 2021-02-22 2022-08-30 石益海 一种可视化导管及带有该可视化导管的切开刀

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CN2318975Y (zh) * 1997-12-30 1999-05-19 中国科学院西安光学精密机械研究所 一种内窥镜的端头结构
CN1572227A (zh) * 2003-05-30 2005-02-02 奥林巴斯株式会社 内窥镜及其组装方法
CN1798519A (zh) * 2003-05-30 2006-07-05 奥林巴斯株式会社 内窥镜和内窥镜顶端形成部件
CN108095671A (zh) * 2016-11-24 2018-06-01 宁波智光机电科技有限公司 一次性电子输尿管软镜装置
WO2019146153A1 (fr) * 2018-01-29 2019-08-01 オリンパス株式会社 Dispositif d'insertion
CN209172248U (zh) * 2018-10-08 2019-07-30 四川康普润德科技有限公司 一种可实现窄带光染色的电子内窥镜
CN211834307U (zh) * 2020-03-04 2020-11-03 南微医学科技股份有限公司 一种成像导管及成像装置
CN211834301U (zh) * 2020-03-04 2020-11-03 南微医学科技股份有限公司 端头、成像导管和医疗设备
CN211834300U (zh) * 2020-03-04 2020-11-03 南微医学科技股份有限公司 成像导管、端头、管体和医疗设备

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WO2023083206A1 (fr) * 2021-11-11 2023-05-19 微创优通医疗科技（上海）有限公司 Sonde de cathéter médical, cathéter médical, et dispositif et système médicaux

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