WO2022222903A1 - 可视化调压导管 - Google Patents

可视化调压导管 Download PDF

Info

Publication number
WO2022222903A1
WO2022222903A1 PCT/CN2022/087558 CN2022087558W WO2022222903A1 WO 2022222903 A1 WO2022222903 A1 WO 2022222903A1 CN 2022087558 W CN2022087558 W CN 2022087558W WO 2022222903 A1 WO2022222903 A1 WO 2022222903A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure regulating
endoscope
pressure
catheter
cavity
Prior art date
Application number
PCT/CN2022/087558
Other languages
English (en)
French (fr)
Inventor
魏彦
Original Assignee
青岛博泰医疗器械有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛博泰医疗器械有限责任公司 filed Critical 青岛博泰医疗器械有限责任公司
Publication of WO2022222903A1 publication Critical patent/WO2022222903A1/zh

Links

Images

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
    • A61M25/1018—Balloon inflating or inflation-control devices

Definitions

  • the invention relates to the field of medical devices, and further relates to a visual pressure-regulating catheter, in particular to a catheter that cooperates with an endoscope and is used for precise adjustment of the balloon expansion position and expansion pressure during organ tissue lumen and vascular expansion treatment .
  • balloon catheters into the patient's blood vessel or other tissue lumen (eg: vagina, urinary tract, airway, intestine, biliary tract, or esophagus, etc.) universal.
  • the basic principle for the application of the above-mentioned balloon catheter is to treat the diseased part by conducting mechanical expansion pressure to the diseased part by expanding the balloon.
  • the balloon catheter When the balloon catheter is expanded, the balloon is withdrawn and decompressed.
  • the decompressed balloon will reduce the mechanical pressure on the diseased tissue, and the outer diameter of the balloon will also be greatly retracted due to the reduction of the pressure.
  • Conventional clinical dilation treatment operation process mainly relies on angiography, B-ultrasound and other equipment to assist in determining the expansion site and expansion pressure during the operation. Since the auxiliary image is not an intuitive image, the operation process is greatly affected by the operator's experience.
  • endoscopes for medical diagnosis has been widely used in the medical field.
  • Endoscopes can enter the natural cavity of the human body and provide intuitive images to inspect the internal structure of the cavity, which is an important means of diagnosis.
  • the cavity can also be finely treated, making the surgical procedure safer and more effective. Therefore, endoscopic-assisted balloon catheter expansion therapy for intraluminal lesions is more and more widely used in clinical practice, such as in the esophagus, intestine or urinary tract.
  • the operation is inconvenient, and it is often impossible to observe the condition of the instruments at all during the operation.
  • the operation is basically blind or semi-blind;
  • the balloon catheter and endoscope are in anterior and posterior positions, the endoscope cannot accurately observe the balloon positioning and expansion process, and the expansion site and expansion pressure cannot be adjusted in real time, which brings great inconvenience to the operation.
  • the purpose of the present invention is to provide a visual pressure regulating catheter, which is easy to operate, greatly improves the positioning efficiency of the endoscope through guidance, and can coordinate with the endoscope to adjust the positioning and expansion of the balloon.
  • the speculum observes the dilated lesion in real time, preventing the failure of dilation treatment due to balloon sliding during the dilation process.
  • Another object of the present invention is to provide a visual pressure regulating catheter, through which the tissue changes during the expansion process can be observed in real time through the endoscope, and the inflation pressure of the balloon can be accurately adjusted by adjusting the position of the endoscope in the pressure regulating cavity. Greatly improve the efficiency and effect of surgery.
  • Another object of the present invention is to provide a visualized pressure regulating catheter, which can provide local linear pressure to the diseased part when the balloon is fully inflated, divide the severely hyperplastic and stenotic diseased tissue into multiple diseased areas, and reduce the number of lesions The ability to rebound after the site is expanded can improve the effect of surgical treatment.
  • the present invention provides a visual pressure regulating catheter
  • the visual pressure regulating catheter comprises a catheter body, a water pressure expansion balloon and a pressure regulating handle arranged on the catheter body, and the interior of the catheter body is along the catheter body.
  • the extension direction of the endoscope is formed with an endoscope pressure regulating channel and a dilation fluid perfusion channel
  • the expansion fluid perfusion channel is communicated with the water pressure expansion balloon
  • the pressure regulating handle is provided with a perfusion port and a pressure regulating channel.
  • a port, the perfusion port and the pressure regulating port are respectively communicated with the dilation fluid perfusion channel and the endoscope pressure regulating channel;
  • the pressure regulating cavity of the endoscope is provided with an observation channel at a position axially opposite to the water pressure expansion balloon, and the camera located at the front end of the endoscope passes through the pressure regulating port, the pressure regulating cavity of the endoscope and the pressure regulating cavity in sequence.
  • the observation channel extends into the water pressure expansion balloon, and the operating rod located at the end of the endoscope is slidably and sealedly connected with the pressure regulating port.
  • the visual pressure regulating catheter is provided with a dilation fluid perfusion channel and an endoscope pressure regulating channel, and the endoscope can be used in conjunction with the water pressure expansion balloon to transport liquid into the water pressure expansion balloon and adjust the water pressure.
  • the endoscope can simultaneously observe the situation in the lumen in real time, which simplifies the operation difficulty caused by the independent setting of the endoscope and the balloon catheter in the prior art, and improves the delivery of the catheter. and positioning efficiency and effectiveness.
  • the operating rod at the end of the endoscope is slidably and sealedly connected to the pressure regulating port.
  • the endoscope can observe and confirm the water pressure in real time throughout the whole process.
  • the position of the expansion balloon to prevent the failure of the expansion treatment due to the sliding of the hydraulic expansion balloon; in addition, the volume of the endoscope entering the catheter body can be adjusted by pushing or pulling the operating rod of the endoscope.
  • the position of the endoscope adjusts the pressure in the closed chamber, and accurately adjusts the expansion pressure of the water pressure expansion balloon in real time, so as to avoid the occurrence of poor treatment effect due to insufficient or excessive expansion of the water pressure expansion balloon.
  • the visualized pressure-regulating catheter can be used with a variety of commonly used clinical instruments according to clinical treatment needs, and the operation is convenient, avoiding the complications caused by the damage of the lumen caused by the switching of instruments, and effectively improving the clinical treatment effect.
  • a local pressure reinforcing rib is arranged outside the water pressure expansion balloon, which can provide local linear pressure to the diseased part when the water pressure expansion balloon is fully expanded.
  • the lesion can be expanded and divided into multiple areas for treatment, thereby greatly reducing the rebound of the lesion after the expansion treatment, especially for the simple balloon. Severe hyperplastic and stenotic diseased tissue with poor therapeutic effect of balloon dilatation has a very excellent therapeutic effect.
  • Fig. 1 is a schematic structural diagram of the visualized pressure regulating conduit of the present invention.
  • FIG. 2 is a schematic structural diagram of the steering guide vane in the visualized pressure regulating catheter of the present invention.
  • FIG. 3 is one of the schematic cross-sectional views of the catheter body in an embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 4 is the second schematic cross-sectional view of the catheter body in an embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 5 is one of the schematic cross-sectional views of the catheter body in another embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 6 is the second schematic cross-sectional view of the catheter body in another embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 7 is a schematic diagram of the installation position of the developing ring in the visual pressure regulating catheter of the present invention.
  • Fig. 8 is a schematic diagram showing the installation position of the guide tube in the visual pressure regulating conduit of the present invention.
  • Fig. 9 is a schematic diagram showing the setting positions of the blocking balloon and the dilation fluid filling tube in the visual pressure regulating catheter of the present invention.
  • FIG. 10 is one of the schematic cross-sectional views of the setting position of the expansion fluid filling tube in the visualized pressure regulating catheter of the present invention.
  • Fig. 11 is the second schematic cross-sectional view of the setting position of the expansion fluid filling pipe in the visualized pressure regulating catheter of the present invention.
  • Fig. 12 is a schematic diagram showing the arrangement position of the local pressure reinforcing ribs in the visualized pressure regulating conduit of the present invention.
  • FIG. 13 is a schematic structural diagram of the water pressure expansion balloon in the first embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 14 is a schematic structural diagram of the water pressure expansion balloon in the second embodiment of the visualized pressure regulating catheter of the present invention.
  • Fig. 15 is a schematic structural diagram of the water pressure expansion balloon in the third embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 16 is a schematic structural diagram of the water pressure expansion balloon in the fourth embodiment of the visualized pressure regulating catheter of the present invention.
  • FIG. 17 is a schematic structural diagram of the water pressure expansion balloon in the fifth embodiment of the visualized pressure regulating catheter of the present invention.
  • the present invention provides a visual pressure regulating catheter
  • the visual pressure regulating catheter includes a catheter body 1 , a water pressure expansion balloon 2 and a pressure regulating handle 3 arranged on the catheter body 1 .
  • the interior of the main body 1 is formed with an endoscope pressure regulating cavity 5 and a dilation fluid perfusion cavity 6 along the extension direction of the catheter body 1, and the dilation liquid perfusion cavity 6 is communicated with the interior of the water pressure expansion balloon 2, and the pressure regulating handle 3 is provided with a perfusion port 301 and a pressure regulating valve 7, the pressure regulating valve 7 is provided with a pressure regulating port 701, the perfusion port 301 is connected with the expansion fluid perfusion channel 6, and the pressure regulating port 701 is connected with the endoscope pressure regulating channel 5 There is an observation channel 4 on the pressure regulating cavity 5 of the endoscope and the position axially opposite to the water pressure expansion balloon 2, and the camera located at the front end of the endoscope passes through the pressure regulating port 701 and
  • liquid can be delivered into the dilation fluid perfusion channel 6 through the perfusion port 301 to control the expansion of the water pressure expansion balloon 2 to achieve the purpose of treating the lesion; in addition, the pressure regulating port 701 can be used as an endoscope
  • the insertion port of the endoscope, the camera at the front end of the endoscope passes through the pressure regulating port 701, the pressure regulating cavity 5 of the endoscope and the observation channel 4 in sequence and extends into the water pressure expansion balloon 2.
  • the endoscope Not only can the situation in the cavity be observed in real time, but also the position of the water pressure expansion balloon 2 can be observed and confirmed in real time during the whole process of the expansion treatment of the hydraulic expansion balloon 2, so as to prevent the failure of the expansion treatment due to the sliding of the hydraulic expansion balloon 2. If the situation occurs, ensure the smooth progress of the expansion treatment. Since the operating rod at the end of the endoscope and the pressure regulating port 701 are connected by sliding and sealing, the interior of the catheter body 1 forms a closed chamber. During use, the volume of the endoscope entering the catheter body 1 can be adjusted by adjusting the volume of the endoscope.
  • the pressure in the closed chamber can be adjusted, and then the expansion pressure of the water pressure expansion balloon 2 can be accurately adjusted.
  • the liquid is drawn out, which avoids the problem of poor treatment effect caused by insufficient expansion or excessive expansion of the water pressure expansion balloon 2, thereby improving the treatment effect on the diseased part.
  • the perfusion port 301 can use, but is not limited to, a luer connector.
  • the length of the catheter body 1 is 10 cm to 250 cm, and the outer diameter of the catheter body 1 is 0.1 cm to 1.5 cm.
  • the axial length of the contact position of the water pressure expansion balloon 2 with the diseased part (that is, the effective working section length of the water pressure expansion balloon 2) is 1 mm.
  • the diameter of the hydrostatic expansion balloon 2 (effective expansion diameter) is 1 mm to 100 mm.
  • the axial length of the observation channel 4 of the pressure regulating channel 5 of the endoscope is 3 mm to 50 mm.
  • the pressure regulating handle 3 is provided at one end of the catheter body 1 , the other end of the catheter body 1 is provided with a conical sealing head 103 , and the water pressure expands the balloon 2 is arranged close to the sealing head 103, and the tapered sealing head 103 plays a guiding role, so as to facilitate the delivery of the water pressure expansion balloon 2 to the diseased part of the patient.
  • both the catheter body 1 and the sealing head 103 are made of plastic material.
  • both the catheter body 1 and the sealing head 103 are made of transparent plastic materials.
  • a steering guide piece 8 is provided on the side of the observation channel 4 away from the pressure regulating handle 3 , and the steering guide piece 8 is provided with a pressure regulating cavity for the endoscope 5.
  • the outer inclined arc edge when the endoscope is delivered to the observation channel 4 through the endoscope pressure regulating channel 5, the steering guide 8 uses its arc edge to guide the endoscope, thereby assisting the endoscope
  • the mirror is turned and protrudes into the interior of the hydrostatic balloon 2 .
  • the pressure regulating channel 5 of the endoscope and the dilation fluid perfusion channel 6 are arranged coaxially (that is, the interior of the catheter body 1 is a coaxial double lumen). structure), the dilation fluid perfusion channel 6 is annularly arranged on the outside of the pressure regulating channel 5 of the endoscope.
  • the cross-section of the pressure regulating channel 5 of the endoscope is circular or square; the cross-section of the dilation fluid perfusion channel 6 is circular or crescent-shaped.
  • the catheter body 1 includes an inner tube body 102 and an outer tube body 101 sleeved on the outside of the inner tube body 102 to form an endoscope inside the inner tube body 102
  • the pressure regulating cavity 5 is formed, and the dilation fluid perfusion cavity 6 is formed between the inner tube body 102 and the outer tube body 101.
  • One end of the expansion balloon 2 near the pressure regulating handle 3 is integrally connected with the outer tube body 101 , and the observation channel 4 passes through the inner tube body 102 and the outer tube body 101 in sequence and communicates with the interior of the hydraulic expansion balloon 2 .
  • the inner tube body 102 can be used as a reinforcing rib of the outer tube body 101 , and the bending resistance and pushing control performance of the catheter body 1 can be enhanced by the arrangement of the inner tube body 102 .
  • the diameter of the inner tube body 102 gradually decreases from the end close to the pressure regulating handle 3 to the end far from the pressure regulating handle 3, so that the water pressure expansion balloon 2 has a larger retraction space when it is retracted and folded, and the water pressure expands. After the balloon 2 is folded, it has a smaller radial size, which is beneficial to improve the passing ability of the hydrostatic expansion balloon 2 in the stenotic lesion.
  • the central axis of the pressure regulating channel 5 of the endoscope is arranged in parallel with the central axis of the dilation fluid perfusion channel 6 (that is, the inner part of the catheter body 1 ) is a non-coaxial dual-lumen structure), the endoscope pressure regulating channel 5 is located at the axial position of the catheter body 1, and the cross-sectional area of the endoscope pressure regulating channel 5 is larger than the cross-sectional area of the dilation fluid perfusion channel 6 , both ends of the hydraulic expansion balloon 2 are connected to the catheter body 1 , and the observation channel 4 penetrates the catheter body 1 and communicates with the interior of the hydraulic expansion balloon 2 .
  • the cross section of the pressure regulating channel 5 of the endoscope is circular; the cross section of the dilation fluid perfusion channel 6 is circular or crescent-shaped.
  • the endoscope pressure regulating lumen 5 and the dilation fluid perfusion lumen 6 may be the same common lumen (that is, the interior of the catheter body 1 is a single lumen structure), sharing the lumen
  • the cross section is circular, rhombus or square.
  • a blocking balloon 10 is provided on the catheter body 1 near the hydraulic expansion balloon 2 , and a dilation fluid filling tube is provided inside the catheter body 1 11.
  • the dilation fluid filling tube 11 communicates with the inside of the blocking balloon 10 .
  • Liquid is injected into the blocking balloon 10 through the dilation liquid filling tube 11 to expand the blocking balloon 10, and the blocking balloon 10 is used to perform dilation therapy in the expanded state while blocking the water pressure from the patient's lumen.
  • the polluting body fluids on both sides of the balloon 2 are expanded, so that the water pressure expansion balloon 2 can obtain a better therapeutic effect.
  • the occlusion balloon 10 can be located on the left or right side of the hydrostatic expansion balloon 2, which is specifically adjusted according to clinical treatment needs.
  • the dilation fluid filling tube 11 is arranged in the dilation fluid perfusion channel 6 and communicates with the interior of the blocking balloon 10 through the dilation fluid perfusion channel 6; if the catheter body 1 is a non-coaxial double-lumen structure.
  • the dilation fluid filling tube 11 is arranged in the catheter body 1, and the dilation fluid filling tube 11 and the dilation fluid perfusion cavity 6 are symmetrically arranged in the endoscope.
  • the size and shape of the cross section of the dilation fluid filling tube 11 are the same as the size and shape of the cross section of the dilation fluid filling cavity 6 .
  • the shape of the cross section of the expansion fluid filling tube 11 may be, but not limited to, a circle or a crescent shape.
  • At least one developing ring 9 is provided on the catheter body 1 at a position axially opposite to the hydraulic expansion balloon 2 , and the developing ring 9 can increase the visual adjustment of the present invention.
  • the visualization of the pressure catheter under X-ray improves the positioning performance of the visualized pressure regulating catheter of the present invention. If the catheter body 1 has a coaxial double-lumen structure, the developing ring 9 is arranged inside the hydraulic expansion balloon 2 and is located on the outer surface of the inner tube body 102; if the catheter body 1 is a non-coaxial double-lumen structure, the developing ring 9 is arranged Inside the hydrostatic balloon 2 and on the outer surface of the catheter body 1 .
  • the number of developing rings 9 is two, and the two developing rings 9 are respectively located on both sides of the water pressure expansion balloon 2 .
  • a guide tube 12 is provided at one end of the catheter body 1 away from the pressure regulating handle 3 , and one end of the guide tube 12 is sealed. The other end is integrally connected to the catheter body 1 .
  • the guide tube 12 can act as a guide (similar to that of a guide wire), facilitating the passage of a catheter through a narrow area without a guide wire being guided.
  • a local pressure reinforcing rib 13 is provided on the outside of the hydraulic expansion balloon 2 , and one end of the local pressure reinforcing rib 13 is sealedly connected with the catheter body 1 , and the local pressure is strengthened.
  • the other end of the rib 13 extends to the end of the catheter body 1 in a direction away from the pressure regulating handle 3 and is sealedly connected with the catheter body 1 .
  • the local pressure reinforcing rib 13 can be connected with the catheter main body 1 as an integral structure.
  • the local pressure reinforcing rib 13 can also extend to the position of the pressure regulating handle 3 and be integrally connected with the catheter body 1 or integrally connected with the pressure regulating handle 3 to ensure that the local pressure reinforcing rib 13 can be in the axial direction of the hydraulic expansion balloon 2 . It is sufficient to cover the outer surface of the hydraulic expansion balloon 2 .
  • the local linear pressure can be provided to the diseased part when the water pressure expansion balloon 2 is fully expanded and expanded.
  • the lesion can be expanded and divided into multiple areas for treatment, thereby greatly reducing the lesion tissue (eg: severe hyperplasia and stenosis lesion tissue, its density is high, and the overall tissue has greater resilience) after expansion treatment.
  • the segmentation of the diseased tissue can be observed through an endoscope, and when it is necessary to fine-tune the increase in pressure, it can be adjusted without increasing the liquid in the water pressure expansion balloon 2.
  • the pressure valve 7 precisely regulates the expansion pressure of the water pressure expansion balloon 2 to improve the treatment effect.
  • the number of local pressure reinforcing ribs 13 may be but not limited to 1 to 7, and the extension direction of each local pressure reinforcing rib 13 is the same as the axial direction of the hydraulic expansion balloon 2 (ie: the hydraulic expansion balloon 2 ).
  • each local pressure reinforcement rib 13 is distributed along the circumferential direction of the hydraulic expansion balloon 2 on the outer surface of the hydraulic expansion balloon 2, and the cross-section of each local pressure reinforcement rib 13 is arc-shaped , triangle, diamond or square structure, the height of the local pressure reinforcement rib 13 (ie: the contact distance of the local pressure reinforcement rib 13 to the diseased part) can be adjusted according to the actual diseased part, so that the outer surface of the local pressure reinforcement rib 13 can The lesion is divided into multiple regions for treatment.
  • the sharp outer edge of the local pressure reinforcing rib 13 (wherein, the sharp outer edge is only located in the axial direction opposite the local pressure reinforcing rib 13 and the hydraulic expansion balloon 2 ). position, or only a part of the position of the local pressure reinforcement rib 13 axially opposite to the hydraulic expansion balloon 2 ) to segment the lesion.
  • the local pressure reinforcement rib 13 can be made of, but not limited to, metal or hard plastic.
  • the number of the hydraulic expansion balloons 2 may be one or a plurality of consecutively arranged along the axial direction of the catheter body 1 , and the hydraulic expansion balloons 2 are made of transparent materials.
  • the hydraulic expansion balloon 2 can be made of a single-layer material, and the single-layer material is any one of polyvinyl chloride, polyurethane, nylon or polyether block amide; the hydraulic expansion balloon 2 can be made of multiple layers.
  • the material of each layer can be made of any one of polyvinyl chloride, polyurethane, nylon or polyether block amide.
  • the shape of the hydraulic expansion balloon 2 may be, but not limited to, an ellipse or a cylinder.
  • the hydraulic expansion balloon 2 can also be a special-shaped columnar structure (such as: a dumbbell-shaped structure with a large diameter at both ends and a small diameter in the middle; a cone structure with a large diameter in the middle and a gradually reduced diameter at both ends; a large diameter at one end and a diameter at the other end. Wedge-shaped structure with small diameter).
  • the visualized pressure regulating catheter of the present invention is provided with an endoscope pressure regulating cavity 5
  • other instruments can be set into the catheter through the endoscope pressure regulating cavity 5 to be used in conjunction with the hydraulic expansion balloon 2 .
  • other instruments include ultrasound probes, radiotherapy catheters, or laser devices, and the like.
  • the working process of the present invention is as follows: connect the external balloon expansion pump to the perfusion port 301 on the pressure regulating handle 3, and then perfuse the water pressure expansion balloon 2 through the perfusion port 301 and the expansion fluid perfusion cavity 6 in turn.
  • the pressure regulating port 701 is also the insertion port of the endoscope, during operation, the endoscope is inserted from the pressure regulating port 701, and enters the water pressure expansion balloon 2 through the endoscope pressure regulating cavity 5 and the observation channel 4 in sequence.
  • the operating rod of the endoscope can be closely fitted with the inner wall of the pressure regulating valve 7.
  • water injection and pressure are carried out through the filling port 301 to ensure the water pressure.
  • the pressure regulating port 701 can withstand the water pressure of more than 3 atm without leakage.

Abstract

一种可视化调压导管，包括导管主体(1)以及设置于导管主体(1)上的水压扩张球囊(2)和调压手柄(3)，导管主体(1)的内部形成有内窥镜调压腔道(5)和扩张液灌注腔道(6)，扩张液灌注腔道(6)与水压扩张球囊(2)相连通，调压手柄(3)上设置有灌注口(301)和调压口(701)，灌注口(301)和调压口(701)分别与扩张液灌注腔道(6)和内窥镜调压腔道(5)相连通；内窥镜调压腔道(5)上与水压扩张球囊(2)轴向相对的位置开设有观察通道(4)，位于内窥镜前端的摄像头依次通过调压口(701)、内窥镜调压腔道(5)和观察通道(4)并伸入至水压扩张球囊(2)内，位于内窥镜末端的操作杆与调压口(701)滑动密封连接。

Description

可视化调压导管
相关申请
本申请要求专利申请号为202110422876.5、申请日为2021.04.20、发明创造名称为“可视化调压导管”的中国发明专利的优先权。
技术领域
本发明涉及医疗器械领域，进一步的，涉及一种可视化调压导管，尤其涉及一种与内窥镜相配合用于器官组织腔道以及血管扩张治疗时精准调节球囊扩张部位和扩张压力的导管。
背景技术
目前，通过将球囊导管引入到患者血管或其他组织内腔(例如：阴道、泌尿道、气道、肠道、胆道或者食道等病患部位)，进行扩张治疗各种疾病变得越来越普遍。对于上述球囊导管应用的基本原理是：通过扩张球囊对病变部位传导机械扩张压力治疗病变部位。当球囊导管完成扩张后，对球囊回抽减压，减压后的球囊在减小对病变组织机械压力同时，球囊外径也会因为压力的减小而发生大幅度回缩，常规的临床扩张治疗操作过程主要依靠造影、B超等设备进行辅助，判定手术过程的扩张部位和扩张压力，由于辅助影像并非直观影像，操作过程受操作者经验影响很大。
现有技术中，利用内窥镜进行医疗诊断在医疗领域已经得到广泛应用，内窥镜可以通过进入人体自然腔道，通过提供直观影像，对腔道内部结构进行检查，是诊断的重要手段，通过配套的手术器械还能对腔道进行精细治疗，使得手术过程更加安全和有效。因此，通过内窥镜辅助球囊导管对腔道内病变部位进行扩张治疗在临床上的应用越来广泛，比如在食道、肠道或者泌尿道等。依靠内窥镜辅助球囊扩张手术操作主要有两种方式，一种是依靠内窥镜器械腔道将手术器械送达病变部位，另一种是将内窥镜和手术器械平行推送到达病变部位，由于球囊导管和内窥镜相对独立，这两种方式均存在如下缺陷：
一、手术过程对狭窄腔道进行治疗时由于腔道挤压，球囊导管和内窥镜相互影响，手术操作不方便，往往根本无法观察到器械情况，基本处于全盲或半盲操作状态；
二、球囊导管和内窥镜处于前后位置，球囊定位和扩张过程内窥镜无法进行精确观察，无法实时调整扩张位点和扩张压力，给操作带来极大的不便。
针对相关技术中球囊导管与内窥镜配合使用不便，使用效果不佳的问题，目前尚未给出有效的解决方案。
发明内容
本发明的目的在于提供一种可视化调压导管，操作简便，通过引导极大提高了内窥镜的定位效率，能够与内窥镜相配合调节球囊定位和扩张，球囊扩张过程可以通过内窥镜实时观察扩张病变部位，防止扩张过程因为球囊滑动导致扩张治疗失败。
本发明的另一目的在于提供一种可视化调压导管，通过内窥镜可实时观察扩张过程组织变化情况，并通过调节内窥镜在调压腔道中的位置精准调节球囊的扩张压力，极大提高手术效率和效果。
本发明的再一目的在于提供一种可视化调压导管，能够在球囊充分扩张膨胀的状态下，对病变部位提供局部线性压力，将严重增生狭窄病变组织分割为多个病变区域，减小病变部位扩张后回弹的能力，提高手术治疗效果。
本发明的目的可采用下列技术方案来实现：
本发明提供了一种可视化调压导管，所述可视化调压导管包括导管主体以及设置于所述导管主体上的水压扩张球囊和调压手柄，所述导管主体的内部沿所述导管主体的延伸方向形成有内窥镜调压腔道和扩张液灌注腔道，所述扩张液灌注腔道与所述水压扩张球囊相连通，所述调压手柄上设置有灌注口和调压口，所述灌注口和所述调压口分别与所述扩张液灌注腔道和所述内窥镜调压腔道相连通；
所述内窥镜调压腔道上与所述水压扩张球囊轴向相对的位置开设有观察通道，位于内窥镜前端的摄像头依次通过调压口、所述内窥镜调压腔道和所述观察通道并伸入至所述水压扩张球囊内，位于内窥镜末端的操作杆与所述调压口滑动密封连接。
本发明的有益效果是：
一、该可视化调压导管内设置有扩张液灌注腔道和内窥镜调压腔道，内窥镜能够与水压扩张球囊配合使用，在向水压扩张球囊内输送液体以及对水压扩张球囊进行定位过程，内窥镜可实时同步观察腔道内的情况，简化了使用时因为内窥镜和现有技术中球囊导管位置独立设置所带来的操作难度，提高了导管输送和定位的效率和效果。
二、该可视化调压导管内中，内窥镜末端的操作杆与调压口滑动密封连接，水压扩 张球囊在对病变部位进行扩张治疗过程中，内窥镜可以全程实时观察确认水压扩张球囊的作用位置，防止因为水压扩张球囊滑动造成扩张治疗失败的情况发生；另外，可以通过内推或者外拉内窥镜的操作杆以调节内窥镜进入导管主体内的体积以及内窥镜的位置，对密闭腔室内的压力进行调节，实时精准调节水压扩张球囊的扩张压力，避免因为水压扩张球囊扩张不足或过度扩张带来治疗效果不佳的情况发生。
三、该可视化调压导管可以根据临床治疗需要配合多种临床常用器械使用，操作便捷，避免因为器械切换造成腔道损伤带来的并发症，有效提高临床治疗效果。
四、该可视化调压导管中，在水压扩张球囊的外部设置有局部压力加强筋，可以在水压扩张球囊充分扩张膨胀的状态下，对病变部位提供局部线性压力，在不需要大幅度增加水压扩张球囊扩张压力的情况下，可以对病变部位进行扩张并将病变部位分割为多个区域进行治疗，进而大幅度减小病变组织扩张治疗后的回弹，特别是对单纯球囊扩张治疗效果不佳的严重增生狭窄病变组织具有非常优异的治疗效果。
附图说明
以下附图仅旨在于对本发明做示意性说明和解释，并不限定本发明的范围。其中：
图1：为本发明可视化调压导管的结构示意图。
图2：为本发明可视化调压导管中转向导片的结构示意图。
图3：为本发明可视化调压导管一实施例中导管主体的横截面示意图之一。
图4：为本发明可视化调压导管一实施例中导管主体的横截面示意图之二。
图5：为本发明可视化调压导管另一实施例中导管主体的横截面示意图之一。
图6：为本发明可视化调压导管另一实施例中导管主体的横截面示意图之二。
图7：为本发明可视化调压导管中显影环的安装位置示意图。
图8：为本发明可视化调压导管中导引管的安装位置示意图。
图9：为本发明可视化调压导管中封堵球囊和扩张液灌装管的设置位置示意图。
图10：为本发明可视化调压导管中扩张液灌装管设置位置的横截面示意图之一。
图11：为本发明可视化调压导管中扩张液灌装管设置位置的横截面示意图之二。
图12：为本发明可视化调压导管中局部压力加强筋的设置位置示意图。
图13：为本发明可视化调压导管中第一实施例中水压扩张球囊的结构示意图。
图14：为本发明可视化调压导管中第二实施例中水压扩张球囊的结构示意图。
图15：为本发明可视化调压导管中第三实施例中水压扩张球囊的结构示意图。
图16：为本发明可视化调压导管中第四实施例中水压扩张球囊的结构示意图。
图17：为本发明可视化调压导管中第五实施例中水压扩张球囊的结构示意图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图说明本发明的具体实施方式。
如图1至图16所示，本发明提供了一种可视化调压导管，该可视化调压导管包括导管主体1以及设置于导管主体1上的水压扩张球囊2和调压手柄3，导管主体1的内部沿导管主体1的延伸方向形成有内窥镜调压腔道5和扩张液灌注腔道6，扩张液灌注腔道6与水压扩张球囊2的内部相连通，调压手柄3上设置有灌注口301和调压阀7，调压阀7上设置有调压口701，灌注口301与扩张液灌注腔道6，调压口701与内窥镜调压腔道5相连通；内窥镜调压腔道5上与水压扩张球囊2轴向相对的位置开设有观察通道4，位于内窥镜前端的摄像头依次通过调压口701、内窥镜调压腔道5和观察通道4并伸入至水压扩张球囊2内，位于内窥镜末端的操作杆与调压口701滑动密封连接，使得内窥镜调压腔道5、扩张液灌注腔道6和水压扩张球囊2的内部形成一个具有固定容积的密闭腔室，通过外拉或者内推调压口701外部的内窥镜的操作杆部分可以控制位于密闭腔室内的内窥镜部分进行运动，以改变内窥镜在密闭腔室内的空间占比，从而能够灵活、精密的调节水压扩张球囊2的扩张压力。
本发明在使用过程中，可通过灌注口301向扩张液灌注腔道6内输送液体从而控制水压扩张球囊2扩张，达到对病变部位治疗的目的；另外，调压口701可作为内窥镜的插入口，内窥镜前端的摄像头依次通过调压口701、内窥镜调压腔道5和观察通道4并伸入至水压扩张球囊2内，在此过程中，内窥镜不仅能够实时观察腔道内的情况，而且还能够在水压扩张球囊2扩张治疗过程中全程实时观察确认水压扩张球囊2的位置，防止由于水压扩张球囊2滑动造成扩张治疗失败的情况出现，保证扩张治疗顺利进行。由于内窥镜末端的操作杆与调压口701之间采用滑动密封连接，使得导管主体1的内部形成一个密闭腔室，在使用过程中，可通过调节内窥镜进入导管主体1内的体积以及内窥镜的位置，对密闭腔室内的压力进行调节，进而可精准调节水压扩张球囊2的扩张压力，此过程无需通过扩张液灌注腔道6向水压扩张球囊2内灌注液体或者抽出液体，避免了由于水压扩张球囊2扩张不足或者过度扩张带来的治疗效果不佳的问题，进而提高了对病变部位的治疗效果。
进一步的，灌注口301可采用但不限于鲁尔接头。
进一步的，导管主体1的长度为10cm至250cm，导管主体1的外径为0.1cm至1.5cm。
进一步的，当水压扩张球囊2处于充分扩张状态下时，水压扩张球囊2与病变部位相接触位置的轴向长度(即：水压扩张球囊2的有效工作段长度)为1mm至300mm，水压扩张球囊2的直径(有效扩张直径)为1mm至100mm。
进一步的，观察通道4在内窥镜调压腔道5的轴向长度为3mm至50mm。
在本发明的一个可选实施例中，如图1所示，调压手柄3设置于导管主体1的一端，导管主体1的另一端设置有锥形的密封头103，且水压扩张球囊2靠近密封头103设置，通过锥形的密封头103起到引导作用，便于将水压扩张球囊2输送至患者的病变部位。
进一步的，导管主体1和密封头103均采用塑料材质制成。优选的，导管主体1和密封头103均采用透明塑料材质制成。
在本发明的一个可选实施例中，如图2所示，观察通道4处远离调压手柄3一侧设置有转向导片8，转向导片8上设置有向内窥镜调压腔道5外侧倾斜的弧形边缘，当内窥镜通过内窥镜调压腔道5输送至观察通道4时，转向导片8利用其弧形边缘对内窥镜起到引导作用，从而协助内窥镜发生转向并伸入水压扩张球囊2的内部。
在本发明的一个可选实施例中，如图3、图4所示，内窥镜调压腔道5与扩张液灌注腔道6同轴设置(即导管主体1的内部为同轴双腔结构)，扩张液灌注腔道6环设于内窥镜调压腔道5的外侧。内窥镜调压腔道5的横截面呈圆形或者方形；扩张液灌注腔道6的横截面呈圆环形或者月牙形。
具体的，如图1、图3、图4所示，导管主体1包括内管体102和套设于内管体102外侧的外管体101，以在内管体102的内部形成内窥镜调压腔道5，并在内管体102与外管体101之间形成扩张液灌注腔道6，水压扩张球囊2上远离调压手柄3一端与内管体102一体连接，水压扩张球囊2上靠近调压手柄3一端与外管体101一体连接，观察通道4依次贯穿内管体102和外管体101并与水压扩张球囊2的内部相连通。另外，内管体102可以作为外管体101的加强筋，通过内管体102的设置加强导管主体1的抗弯折能力和推送操控性能。
进一步的，内管体102的直径由靠近调压手柄3一端至远离调压手柄3一端逐渐缩小，能够让水压扩张球囊2在回缩折叠时拥有更大的回缩空间，水压扩张球囊2折叠后使其具有更小的径向尺寸，从而有利于提高水压扩张球囊2在狭窄病变部位的通过能力。
在本发明的一个可选实施例中，如图5、图6所示，内窥镜调压腔道5的中心轴与 扩张液灌注腔道6的中心轴平行设置(即导管主体1的内部为非同轴双腔结构)，内窥镜调压腔道5位于导管主体1的轴心位置，且内窥镜调压腔道5的横截面积大于扩张液灌注腔道6的横截面积，水压扩张球囊2的两端均与导管主体1连接，观察通道4贯穿导管主体1并与水压扩张球囊2的内部相连通。内窥镜调压腔道5的横截面呈圆形；扩张液灌注腔道6的横截面呈圆形或者月牙形。
在本发明的一个可选实施例中，内窥镜调压腔道5与扩张液灌注腔道6可为同一共用腔道(即：即导管主体1的内部为单腔结构)，共用腔道的横截面为圆形、菱形或者方形。
在本发明的一个可选实施例中，如图9所示，导管主体1上靠近水压扩张球囊2的位置设置有封堵球囊10，导管主体1的内部设置有扩张液灌装管11，扩张液灌装管11与封堵球囊10的内部相连通。通过扩张液灌装管11向封堵球囊10内注入液体，以使封堵球囊10扩张，封堵球囊10扩张状态下用于进行扩张治疗的同时阻断来自病患腔道内水压扩张球囊2两侧的污染性体液，从而让水压扩张球囊2获得更好的治疗效果。封堵球囊10可以位于水压扩张球囊2的左边或者右边，具体根据临床治疗需要调整。如果导管主体1为同轴双腔结构，扩张液灌装管11设置于扩张液灌注腔道6内，并穿过扩张液灌注腔道6与封堵球囊10的内部相连通；如果导管主体1为非同轴双腔结构，如图5、图6所示，扩张液灌装管11设置于导管主体1内，且扩张液灌装管11与扩张液灌注腔道6对称设置于内窥镜调压腔道5的两侧，扩张液灌装管11的横截面的大小、形状与扩张液灌注腔道6的横截面的大小、形状均相同。
进一步的，扩张液灌装管11的横截面的形状可为但不限于圆形或者月牙形。
在本发明的一个可选实施例中，如图7所示，导管主体1上与水压扩张球囊2轴向相对的位置设置有至少一个显影环9，显影环9可增加本发明可视化调压导管在X射线下的显影性，提高对本发明可视化调压导管的定位性能。如果导管主体1为同轴双腔结构，显影环9设置于水压扩张球囊2的内部且位于内管体102的外表面；如果导管主体1为非同轴双腔结构，显影环9设置于水压扩张球囊2的内部且位于导管主体1的外表面。
具体的，显影环9的数量为两个，两个显影环9分别位于水压扩张球囊2的两侧。
在本发明的一个可选实施例中，如图8所示，导管主体1上远离调压手柄3的一端设置有导引管12，导引管12的一端为密封设置，导引管12的另一端与导管主体1一体连接。导引管12能够起到引导作用(与导丝作用类似)，有利于导管输送过程在没有导 丝引导的情况下通过狭窄区域。
在本发明的一个可选实施例中，如图12所示，水压扩张球囊2的外部设置有局部压力加强筋13，局部压力加强筋13的一端与导管主体1密封连接，局部压力加强筋13的另一端向远离调压手柄3方向延伸至导管主体1的端部并与导管主体1密封连接。其中，局部压力加强筋13可与导管主体1之间为一体连接结构。当然，局部压力加强筋13也可延伸至调压手柄3位置并与导管主体1一体连接或者与调压手柄3一体连接，保证局部压力加强筋13能够在水压扩张球囊2的轴向上覆盖水压扩张球囊2的外表面即可。通过局部压力加强筋13的设置，可以在水压扩张球囊2充分扩张膨胀的状态下，对病变部位提供局部线性压力，在不需要大幅度增加水压扩张球囊2扩张压力的情况下，可以对病变部位进行扩张并将病变部位分割为多个区域进行治疗，进而大幅度减小病变组织(如：严重增生狭窄病变组织，其密度大，组织整体具有较大的回弹性)扩张治疗后的回弹，特别是对单纯球囊扩张治疗效果不佳的严重增生狭窄病变组织具有非常优异的治疗效果。另外，本发明的可视化调压导管使用过程中，可通过内窥镜观察病变组织的分割情况，当需要微调增加压力时，可以在不增加水压扩张球囊2内液体的情况下，通过调压阀7精准调控水压扩张球囊2的扩张压力，提高治疗效果。
进一步的，局部压力加强筋13的数量可为但不限于1至7根，每根局部压力加强筋13的延伸方向均与水压扩张球囊2的轴向(即：水压扩张球囊2工作时的动作方向)相平行，且各局部压力加强筋13在水压扩张球囊2的外表面沿水压扩张球囊2的周向分布，各局部压力加强筋13的横截面呈弧形、三角形、菱形或者方形等结构，局部压力加强筋13的高度(即：局部压力加强筋13对病变部位的接触距离)可根据实际病变部位进行调整，使得局部压力加强筋13的外表面能够将病变部位分割为多个区域进行治疗。当局部压力加强筋13的横截面呈三角形、菱形或者方形时，局部压力加强筋13的锋利外缘(其中，锋利外缘仅位于局部压力加强筋13与水压扩张球囊2轴向相对的位置上，或者仅位于局部压力加强筋13与水压扩张球囊2轴向相对的一部分位置上)对病变部位进行分割。
进一步的，局部压力加强筋13可采用但不限于金属或者硬质塑料制成。
在本发明的一个可选实施例中，水压扩张球囊2的数量可为一个或者沿导管主体1的轴向连续设置的多个，水压扩张球囊2采用透明材料制成。
进一步的，水压扩张球囊2可为单层材料制成，单层材料为采用聚氯乙烯、聚氨酯、尼龙或者聚醚嵌段酰胺中的任意一种；水压扩张球囊2可为多层材料制成，各层材料可 分别采用聚氯乙烯、聚氨酯、尼龙或者聚醚嵌段酰胺中的任意一种。
进一步的，如图13至图17所示，水压扩张球囊2的形状可为但不限于椭圆形或圆柱形。当然，水压扩张球囊2还可为异形柱状结构(如：两端直径大、中部直径小的哑铃型结构；中部直径大、两端直径逐渐缩小的锥体结构；一端直径大、另一端直径小的楔型结构)。
本发明的可视化调压导管由于设置有内窥镜调压腔道5，可通过内窥镜调压腔道5向导管内设置其它器械与水压扩张球囊2配合使用。优选的，其它器械包括超声探头、放射治疗导管或者激光装置等。
本发明的工作过程为：将外部的球囊扩张泵与调压手柄3上的灌注口301连接，依次通过灌注口301和扩张液灌注腔道6即可达到向水压扩张球囊2中灌注液体让水压扩张球囊2膨胀扩张的目的。由于调压口701也为内窥镜的插入口，操作时，内窥镜从调压口701插入，并依次通过内窥镜调压腔道5和观察通道4进入至水压扩张球囊2内的预设位置，通过旋转或按压调压阀7可使内窥镜的操作杆与调压阀7的内壁之间紧密贴合，此时通过灌注口301进行注水加压，在保证水压扩张球囊2完全膨胀扩张的情况下，调压口701能够耐受3atm以上水压不泄露。
以上所述仅为本发明示意性的具体实施方式，并非用以限定本发明的范围。任何本领域的技术人员，在不脱离本发明的构思和原则的前提下所作的等同变化与修改，均应属于本发明保护的范围。

Claims (13)

  1. 一种可视化调压导管，其中，所述可视化调压导管包括导管主体以及设置于所述导管主体上的水压扩张球囊和调压手柄，所述导管主体的内部沿所述导管主体的延伸方向形成有内窥镜调压腔道和扩张液灌注腔道，所述扩张液灌注腔道与所述水压扩张球囊相连通，所述调压手柄上设置有灌注口和调压口，所述灌注口和所述调压口分别与所述扩张液灌注腔道和所述内窥镜调压腔道相连通；
    所述内窥镜调压腔道上与所述水压扩张球囊轴向相对的位置开设有观察通道，位于内窥镜前端的摄像头依次通过调压口、所述内窥镜调压腔道和所述观察通道并伸入至所述水压扩张球囊内，位于内窥镜末端的操作杆与所述调压口滑动密封连接。
  2. 如权利要求1所述的可视化调压导管，其中，所述调压手柄设置于所述导管主体的一端，所述导管主体的另一端设置有锥形的密封头，且所述水压扩张球囊靠近所述密封头设置。
  3. 如权利要求1或2所述的可视化调压导管，其中，所述调压手柄上设置有调压阀，所述调压口位于所述调压阀上。
  4. 如权利要求1所述的可视化调压导管，其中，所述观察通道处远离所述调压手柄一侧设置有转向导片，所述转向导片上设置有向所述内窥镜调压腔道外侧倾斜的弧形边缘，以引导所述内窥镜前端的摄像头从所述观察通道伸出。
  5. 如权利要求1所述的可视化调压导管，其中，所述内窥镜调压腔道与所述扩张液灌注腔道同轴设置，所述扩张液灌注腔道环设于所述内窥镜调压腔道的外侧。
  6. 如权利要求5所述的可视化调压导管，其中，所述导管主体包括内管体和套设于所述内管体外侧的外管体，以在所述内管体的内部形成所述内窥镜调压腔道，并在所述内管体与所述外管体之间形成所述扩张液灌注腔道，所述水压扩张球囊上远离所述调压手柄一端与所述内管体连接，所述水压扩张球囊上靠近所述调压手柄一端与所述外管体连接，所述观察通道依次贯穿所述内管体和所述外管体并与所述水压扩张球囊的内部相连通。
  7. 如权利要求1所述的可视化调压导管，其中，所述内窥镜调压腔道的中心轴与所述扩张液灌注腔道的中心轴平行设置，所述内窥镜调压腔道位于所述导管主体的轴心位 置，且所述内窥镜调压腔道的横截面积大于所述扩张液灌注腔道的横截面积，所述水压扩张球囊的两端均与所述导管主体连接，所述观察通道贯穿所述导管主体并与所述水压扩张球囊的内部相连通。
  8. 如权利要求1所述的可视化调压导管，其中，所述内窥镜调压腔道与所述扩张液灌注腔道为同一共用腔道。
  9. 如权利要求1所述的可视化调压导管，其中，所述导管主体上靠近所述水压扩张球囊的位置设置有封堵球囊，所述导管主体的内部设置有扩张液灌装管，所述扩张液灌装管与所述封堵球囊的内部相连通。
  10. 如权利要求1所述的可视化调压导管，其中，所述导管主体上与所述水压扩张球囊轴向相对的位置设置有至少一个显影环。
  11. 如权利要求1所述的可视化调压导管，其中，所述导管主体上远离所述调压手柄的一端设置有导引管，所述导引管的一端为密封设置，所述导引管的另一端与所述导管主体一体连接。
  12. 如权利要求1所述的可视化调压导管，其中，所述水压扩张球囊的外部设置有局部压力加强筋，所述局部压力加强筋的一端与所述导管主体密封连接，所述局部压力加强筋的另一端向远离所述调压手柄方向延伸至所述导管主体的端部并与所述导管主体密封连接。
  13. 如权利要求1所述的可视化调压导管，其中，所述水压扩张球囊的数量为一个或者沿所述导管主体的轴向连续设置的多个，所述水压扩张球囊为透明材料制成。
PCT/CN2022/087558 2021-04-20 2022-04-19 可视化调压导管 WO2022222903A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110422876.5A CN113244502A (zh) 2021-04-20 2021-04-20 可视化调压导管
CN202110422876.5 2021-04-20

Publications (1)

Publication Number Publication Date
WO2022222903A1 true WO2022222903A1 (zh) 2022-10-27

Family

ID=77221337

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/087558 WO2022222903A1 (zh) 2021-04-20 2022-04-19 可视化调压导管

Country Status (2)

Country Link
CN (1) CN113244502A (zh)
WO (1) WO2022222903A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113244502A (zh) * 2021-04-20 2021-08-13 青岛博泰医疗器械有限责任公司 可视化调压导管
CN113476312A (zh) * 2021-08-20 2021-10-08 上海市第一人民医院 一种多功能水囊式胃造瘘管
CN117442239B (zh) * 2023-12-22 2024-02-27 四川省医学科学院·四川省人民医院 一种液囊及采用该液囊的内镜先端帽及内镜

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002301019A (ja) * 2001-04-09 2002-10-15 Hironori Yamamoto 内視鏡装置
CN204293125U (zh) * 2014-12-04 2015-04-29 浙江天使医疗器械有限公司 可视子宫扩张器
US20170215839A1 (en) * 2014-07-28 2017-08-03 Digital Endoscopy Gmbh Endoscopic device
CN211383384U (zh) * 2019-11-12 2020-09-01 武汉市第三医院 一种宫腔内窥镜导管
CN111617369A (zh) * 2020-06-03 2020-09-04 北京嘉和博龙医疗科技有限公司 前端封闭的可视化前列腺扩裂导管及其使用方法
CN113244502A (zh) * 2021-04-20 2021-08-13 青岛博泰医疗器械有限责任公司 可视化调压导管
CN113244503A (zh) * 2020-09-03 2021-08-13 青岛博泰医疗器械有限责任公司 药物球囊导管系统

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002301019A (ja) * 2001-04-09 2002-10-15 Hironori Yamamoto 内視鏡装置
US20170215839A1 (en) * 2014-07-28 2017-08-03 Digital Endoscopy Gmbh Endoscopic device
CN204293125U (zh) * 2014-12-04 2015-04-29 浙江天使医疗器械有限公司 可视子宫扩张器
CN211383384U (zh) * 2019-11-12 2020-09-01 武汉市第三医院 一种宫腔内窥镜导管
CN111617369A (zh) * 2020-06-03 2020-09-04 北京嘉和博龙医疗科技有限公司 前端封闭的可视化前列腺扩裂导管及其使用方法
CN113244503A (zh) * 2020-09-03 2021-08-13 青岛博泰医疗器械有限责任公司 药物球囊导管系统
CN113244502A (zh) * 2021-04-20 2021-08-13 青岛博泰医疗器械有限责任公司 可视化调压导管

Also Published As

Publication number Publication date
CN113244502A (zh) 2021-08-13

Similar Documents

Publication Publication Date Title
WO2022222903A1 (zh) 可视化调压导管
US20210321858A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
US10874285B2 (en) Method and apparatus for stabilizing, straightening, expanding and/or flattening the side wall of a body lumen and/or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
AU2020202360B2 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
US20210338056A1 (en) Method and apparatus for performing lavage and suction at a surgical site in a body lumen or body cavity
JPS59502134A (ja) 体腔への開路装置
US20210338920A1 (en) Method and apparatus for performing lavage and suction at a surgical site in a body lumen or body cavity
US20210361272A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
WO2020048257A1 (zh) 一种间距可调式双球囊灌注导管及其使用方法
CN111135432A (zh) 一种伸缩蠕动式多球囊结肠逆行气液双重造影导管装置
US20220183540A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
CN209361614U (zh) 一种间距可调式双球囊灌注导管
US20210282626A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
CN216855482U (zh) 可视化调压导管
CN218961563U (zh) 单腔道球囊导管
US20220218182A1 (en) Methods and apparatus for inverting a hollow sleeve and thereafter reverting an inverted hollow sleeve
US20230277046A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
CN217409544U (zh) 可选择性扩张直径的球囊导管
US20210393114A1 (en) Method and apparatus for manipulating the side wall of a body lumen or body cavity so as to provide increased visualization of the same and/or increased access to the same, and/or for stabilizing instruments relative to the same
CN114515377A (zh) 可选择性扩张直径的球囊导管
WO2023215640A1 (en) Method and apparatus for manipulating side wall of a body lumen
CN112190826A (zh) 一种输尿管扩张球囊导丝

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22791011

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022791011

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022791011

Country of ref document: EP

Effective date: 20231120