WO2024045868A1 - 可视装置 - Google Patents

可视装置 Download PDF

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Publication number
WO2024045868A1
WO2024045868A1 PCT/CN2023/104439 CN2023104439W WO2024045868A1 WO 2024045868 A1 WO2024045868 A1 WO 2024045868A1 CN 2023104439 W CN2023104439 W CN 2023104439W WO 2024045868 A1 WO2024045868 A1 WO 2024045868A1
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WO
WIPO (PCT)
Prior art keywords
visual device
catheter assembly
head end
push
sleeve body
Prior art date
Application number
PCT/CN2023/104439
Other languages
English (en)
French (fr)
Inventor
经历
王雄伟
李伟伟
Original Assignee
微创优通医疗科技（上海）有限公司
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
Priority claimed from CN202222296236.7U external-priority patent/CN219184171U/zh
Priority claimed from CN202211049496.2A external-priority patent/CN117653365A/zh
Application filed by 微创优通医疗科技（上海）有限公司 filed Critical 微创优通医疗科技（上海）有限公司
Publication of WO2024045868A1 publication Critical patent/WO2024045868A1/zh

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Classifications

    • 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
    • A61B1/005—Flexible endoscopes
    • 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
    • A61B1/04—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 combined with photographic or television appliances

Definitions

  • the present application relates to the technical field of medical devices, and in particular to a visual device.
  • ERCP endoscopic retrograde cholangiopancreatography
  • ERCP has the advantages of no incision, less trauma, shorter operation time, and fewer complications than surgery.
  • the doctor first inserts the duodenoscope through the mouth and reaches the duodenal papilla through the esophagus and stomach; then inserts the incision knife or choledochoscope through the duodenoscope instrument channel, and uses X-ray With the assistance of the patient, the patient reaches the bile and pancreatic duct through the duodenal papilla.
  • contrast fluid is injected to observe the lesions inside the bile and pancreatic duct, and necessary treatments are performed, such as placement of drainage tubes and stents, lithotripsy and stone removal, and stricture dilation. wait.
  • the doctor needs to use a guide wire to insert into the target bile duct or pancreatic duct, and then insert the incision knife through the guide wire channel. or choledochoscopy. In order to confirm the position of the lumen where the guide wire enters, the doctor needs to obtain the bending angle of the guide wire relative to the duodenum through X-ray fluoroscopy.
  • contrast imaging is also needed during surgery to guide the doctor’s therapeutic operations in the bile and pancreatic ducts. It can be said that contrast imaging is an additional surgical step to make up for the lack of X-ray perspective. The entry of contrast fluid into the pancreas will cause an increase in internal pressure, adding an additional predisposing factor to postoperative pancreatitis.
  • this application provides a visual device, including:
  • a camera which is disposed on the distal end face of the catheter assembly.
  • the sleeve body is a hollow structure with openings at both ends.
  • the sleeve body includes a connecting section and an elastic section that are sequentially connected along the distal direction.
  • the connecting section is sleeved on the distal end of the catheter assembly, and the The connecting section and the catheter assembly can move relative to each other in the axial direction, and the elastic section is configured such that when the connecting section moves distally relative to the catheter assembly, at least part of the elastic section exceeds the catheter When the connecting section moves proximally relative to the catheter assembly, the elastic section expands radially under the support of the catheter assembly.
  • the elastic segment is made of transparent material.
  • the elastic segment is in the shape of a truncated cone, and the diameter of the elastic segment gradually decreases in a direction away from the connecting segment.
  • the elastic segment includes at least two blades, all of the blades are arranged around the distal end of the connecting segment along the circumference of the connecting segment, and one end of the blade is connected to the connecting segment. The distal end of the blade is connected, and the other end of the blade is the free end.
  • the connecting section is provided with a deformation groove, and the deformation groove runs through the distal end of the connecting section in the axial direction and is connected to the gap between two adjacent blades.
  • the width of the deformation groove gradually increases along the direction approaching the elastic segment.
  • the visual device further includes a wiring harness electrically connected to the camera, and the conduit assembly includes:
  • a multi-lumen tube the multi-lumen tube is provided with a first lumen running through both ends of itself, and the wire harness is passed through the first lumen;
  • the head end seat is arranged at the distal end of the multi-lumen tube, the head end seat is provided with a first mounting hole connected to the first cavity, and the first mounting hole penetrates the The far end of the head end base, the camera is arranged on the first installation In the hole, the sleeve body is sleeved on the head end seat and the multi-lumen tube, and the sleeve body and the head end seat can move relative to each other in the axial direction.
  • the axial length of the connecting section is greater than the axial length of the head end seat.
  • the visual device further includes a push-pull member
  • the multi-lumen tube is also provided with a second lumen running through both ends of itself, and the push-pull member is movably inserted into the second lumen.
  • one end of the push-pull member is connected to the sleeve body, and the other end of the push-pull member passes through the second cavity, and the push-pull member is used to drive the sleeve body to move relative to the head end seat .
  • an escape groove is provided on the peripheral side of the head end seat, and the escape groove is connected with the second cavity.
  • the push-pull part is installed in the escape groove and can move along the escape groove.
  • the visual device further includes a push-pull member
  • the multi-lumen tube is also provided with a second lumen running through both ends of itself, and the push-pull member is movably inserted into the second lumen.
  • one end of the push-pull member is connected to the head end seat, and the other end of the push-pull member passes through the second cavity, and the push-pull member is used to drive the head end seat relative to the sleeve body move.
  • the visual device further includes a bending control handle and a pull wire.
  • the multi-lumen tube is also provided with a third cavity that runs through both ends of itself, and the pull wire is passed through the third cavity.
  • one end of the pull wire is connected to the head end seat, the other end of the pull wire is connected to the bending control handle, the bending control handle is connected to the proximal end of the multi-lumen tube, and the bending control handle is To pull the pull wire.
  • the bending control handle is provided with a bending control knob, the pulling wire is connected to the bending control knob, and the bending control knob is used to retract or release the pulling wire.
  • the number of the pulling wires is multiple, and the plurality of pulling wires are respectively connected to different positions on the circumferential side of the head end seat.
  • the multi-lumen tube is also provided with a first instrument channel that runs through both ends of itself, and the head end seat is provided with a second instrument channel that runs through both ends of itself.
  • the first instrument channel is connected with the third instrument channel. The two instrument channels are connected.
  • Figure 1 is a schematic structural diagram of the visualization device according to an embodiment after the sleeve moves distally relative to the catheter assembly;
  • Figure 2 is a cross-sectional view of the visual device shown in Figure 1;
  • Figure 3 is a schematic structural diagram of the visualization device according to an embodiment after the sleeve moves proximally relative to the catheter assembly;
  • Figure 4 is a cross-sectional view of the visual device shown in Figure 3;
  • Figure 5 is a schematic structural diagram of a cover body according to an embodiment
  • Figure 6 is a schematic structural diagram of a cover body in another embodiment
  • Figure 7 is a schematic structural diagram of the sleeve body shown in Figure 6 from another perspective;
  • Figure 8 is a schematic structural diagram of a cover body according to another embodiment
  • Figure 9 is a schematic structural diagram of the sleeve body shown in Figure 8 from another perspective;
  • Figure 10 is a schematic structural diagram of a head end seat according to an embodiment
  • Figure 11 is a schematic structural diagram of a multi-lumen tube according to an embodiment
  • Figure 12 is a schematic structural diagram of a multi-lumen tube according to another embodiment
  • Figure 13 is a schematic structural diagram of the visual device after the cover is hidden according to an embodiment
  • Figure 14 is a cross-sectional view of a viewing device according to an embodiment
  • Figure 15 is a schematic structural diagram of a bending control handle according to an embodiment.
  • distal end refers to the end far away from the surgical operator
  • proximal end refers to the end close to the surgical operator.
  • Axial refers to the direction along the axis of the whole or component; “circumferential” refers to the direction of rotation around the “axial”.
  • Diadial refers to the direction perpendicular to the overall or component axis.
  • a visualization device includes a catheter assembly 10 , a camera (not shown), and a sheath 20 .
  • the camera is disposed on the distal end face 13 of the catheter assembly 10 .
  • the camera is flush with the distal end face 13 of the catheter assembly 10 .
  • a camera is used to obtain images of the patient's body.
  • the sleeve body 20 is a hollow structure with openings at both ends.
  • the sleeve body 20 is sleeved on the distal end of the catheter assembly 10, and the sleeve body 20 and the catheter assembly 10 can move relative to each other along the axial direction.
  • the sleeve body 20 includes serially connected components along the distal direction.
  • the connecting end 21 is sleeved on the distal end of the catheter assembly 10.
  • the elastic section 22 has elastic deformation ability.
  • the elastic section 22 is configured such that when the sleeve body 20 faces the distal end of the catheter assembly 10 When moving to such that at least part of the elastic section 22 exceeds the distal end surface of the catheter assembly 10, the elastic The segment 22 shrinks radially; when the sheath 20 moves toward the proximal end relative to the catheter assembly 10, the elastic segment 22 expands radially under the support of the catheter assembly.
  • the above-mentioned visual device sets the camera at the distal end of the catheter assembly 10, so that the camera can be sent into the patient's body through the catheter assembly 10.
  • the camera can obtain an image directly looking at the duodenal papilla, thereby replacing
  • the flat side view image of traditional X-ray fluoroscopy reduces the difficulty of finding and entering the nipple with instruments such as guide wires or incision knives, and is more conducive to assisting doctors in surgical operations. And there is no radiation, which further reduces the resistance of both doctors and patients to ERCP, which helps ERCP to be promoted and served to more adapted people.
  • ERCP surgery does not need to be performed in a specific ERCP room.
  • ERCP surgery can also be performed in ordinary diagnosis and treatment rooms, greatly reducing patient waiting time and improving hospital bed mobility.
  • the above-mentioned visual device sets the sleeve body 20 at the distal end of the catheter assembly 10 and enables the sleeve body 20 and the catheter assembly 10 to move relative to each other in the axial direction, so that during ERCP surgery, when performing nipple intubation or stenosis,
  • the sleeve body 20 is driven to move distally relative to the catheter assembly 10 so that at least part of the elastic segment 22 is located at the distal end face 13 of the catheter assembly 10.
  • the elastic segment 22 shrinks radially, so that the elastic segment 22 shrinks radially.
  • the diameter of the section 22 is reduced and smaller than the diameter of the distal end of the catheter assembly 10, thereby helping the sleeve 20 to break through the narrow section of the bile and pancreatic duct, thereby making it easier for the visualization device to pass through the narrow section of the bile and pancreatic duct and beyond the distal end.
  • the elastic section 22 of the end face 13 can stretch the human tissue so that a certain distance is maintained between the human tissue and the camera, thus opening the camera's field of view and preventing the camera from being damaged due to the distal end face 13 of the catheter assembly 10 being close to the human tissue wall. Unable to obtain image problem.
  • the camera can clearly observe the human tissue wall, which helps doctors quickly distinguish the bile and pancreatic ducts without using X-ray fluoroscopy, thereby speeding up the operation.
  • the sleeve body 20 can be driven to move proximally relative to the catheter assembly 10 until the sleeve body 20 is completely covered.
  • the elastic section 22 expands radially under the pressure of the catheter assembly 10, thereby enlarging the opening at the distal end of the elastic section 22, thereby providing a larger field of view for the camera, and at the same time also It can discharge flocculent secretions or fluid to prevent flocculent secretions or fluid from impeding camera imaging.
  • the elastic segment 22 is configured to be made of transparent material, that is, the elastic segment 22 is made of highly transparent or fully transparent material, so that the camera can not only capture images from the elastic segment 22
  • the distal opening obtains a field of view, and the field of view can also be obtained through the elastic segment 22, thereby expanding the field of view of the camera and making the image information obtained by the camera more comprehensive.
  • the elastic section 22 is extruded and deformed, causing the distal opening to be closed.
  • the camera can still observe the wall of the bile and pancreatic ducts through the transparent elastic section 22, thereby helping doctors quickly distinguish between bile ducts and pancreatic ducts. pancreatic duct.
  • the connecting section 21 can be made of transparent material or non-transparent material.
  • the connecting section 21 and the elastic section 22 are an integrally formed structure.
  • the elastic segment 22 is in the shape of a truncated cone, and the diameter of the elastic segment 22 faces away.
  • the direction away from the catheter assembly 10 gradually decreases, that is, the elastic section 22 is tapered.
  • the cone-shaped elastic section 22 is easier to break through the narrow section of the bile and pancreatic duct, and can assist the visual device to pass smoothly through the narrow section of the bile and pancreatic duct, thereby reducing the risk of tissue damage.
  • the axial length of the elastic section 22 is 0.5mm-2mm, thereby ensuring that the elastic section 22 has sufficient length beyond the distal end face 13 of the catheter assembly 10 to spread human tissue and prevent the camera from sticking to the wall and preventing the camera from sticking to the wall. If the length of the elastic section 22 is too long, the elastic section 22 will be too soft, resulting in insufficient support.
  • the minimum diameter of the elastic section 22 is 1mm-1.5mm, thereby ensuring that the diameter of the elastic section 22 is small enough to break through the narrow section when the elastic section 22 contracts radially.
  • the sleeve body 20 can move relative to the catheter assembly 10, the taper of the elastic segment 22 and the opening size of the distal end of the elastic segment 22 can be adjusted by moving the sleeve body 20, thereby meeting the diameter requirements of different bile and pancreatic ducts and different imaging fields.
  • the elastic segment 22 can be slightly extended from the distal end of the catheter assembly 10, thereby avoiding the problem of inability to image due to the distal end of the catheter assembly 10 adhering to the wall, and at the same time, the elasticity can be improved.
  • the opening at the distal end of the segment 22 is larger, so that the camera can obtain a larger field of view through the opening at the distal end of the elastic segment 22 .
  • the length of the elastic section 22 extending from the distal end of the catheter assembly 10 can be lengthened, so that the elastic section 22 has a better taper, which helps the catheter assembly 10 pass through the narrow section.
  • the elastic section 22 may also include at least two blades 221 , and all blades 221 are arranged around the distal end of the connecting section 21 along the circumference of the connecting section 21 .
  • One end of blade 221 is connected to the distal end of connecting section 21, and the other end of blade 221 is a free end.
  • the free ends of all blades 221 are gathered toward the center of the elastic segment 22, so that the elastic segment 22 is generally cone-shaped to facilitate the visualization device to pass through the narrow segment of the bile and pancreatic duct.
  • the number of blades 221 in the elastic section 22 can be set as required.
  • the elastic section 22 includes two blades 221 , or as shown in FIG. 8 , the elastic section 22 includes four blades 221 .
  • the elastic section 22 can have better elastic deformation ability.
  • all the blades 221 can be separated from each other, so that The friction between the elastic section 22 and the catheter assembly 10 is reduced, thereby making it easier to drive the sheath 20 to move toward the proximal end.
  • the connecting section 21 is provided with a deformation groove 211 .
  • the deformation groove 211 runs through the distal end of the connecting section 21 and is connected to the gap between two adjacent blades 221 .
  • the connecting section 22 has a certain space to be stretched or compressed, and the deformation ability of the connecting section 21 is increased, so that when the elastic section 22 is retracted, the connecting section 22 is more easily supported by the catheter assembly 10 Opening can further reduce the difficulty in recovering the elastic segment 22, making it easier for doctors to operate.
  • the width of the deformation groove gradually increases along the direction approaching the elastic section 22, thereby making the deformation space of the distal end of the connecting section 21 larger, further improving the deformation capacity of the distal end of the connecting section 22, and thus This further reduces the difficulty in recovering the elastic segment 22.
  • the visual device also includes a light source (not shown) and a wire harness 30 .
  • the wire harness 30 is electrically connected to the camera and the light source for power supply and data transmission.
  • the camera can be a CMOS image sensor or CCD
  • the light source can be LED, optical fiber, etc.
  • the catheter assembly 10 includes a multi-lumen tube 11 and a head-end seat 12 , and the head-end seat 12 is connected to the distal end of the multi-lumen tube 11 .
  • the multi-lumen tube 11 and the end base 12 can be connected by nesting, threading, or adhesive connection.
  • the multi-lumen tube 11 is provided with a first cavity 111 that runs through both ends of itself, and a wire harness 30 is passed through the first cavity 111.
  • One end of the wire harness 30 is connected to the camera and the light source to achieve power supply and data transmission, and the end of the wire harness 30 is away from the camera. Used to connect to the host computer to display the image information obtained by the camera through the host computer.
  • the camera and light source are arranged on the head end base 12 .
  • the sleeve body 20 is sleeved on the head end seat 12 and the multi-lumen tube 11, and the sleeve body 20 and the head end base 12 can move relative to each other along the axial direction.
  • the multi-lumen tube 11 and the head-end seat 12 are of separate design. In other embodiments, the multi-lumen tube 11 and the head-end seat 12 can also be designed to be integrally formed.
  • the length of the connecting section 21 is greater than the length of the head end seat 12, thereby ensuring that when the elastic section 22 moves distally relative to the catheter assembly 10 to fully extend out of the distal end of the catheter assembly 10, the connecting section 21 can still cover it.
  • the connection gap between the multi-lumen tube 11 and the head end seat 12 prevents body fluids from penetrating into the multi-lumen tube 11 through the connection gap.
  • the visual device further includes a push-pull member 40.
  • the multi-lumen tube 11 is also provided with a second lumen 112 that runs through both ends of itself.
  • the push-pull member 40 is movably installed in the second lumen 112. , and one end of the push-pull member 40 is connected to the sleeve body 20.
  • the connection section 21 of the sleeve body 20 is provided with a connection hole 23, and the distal end of the push-pull member 40 is inserted into the connection hole 23 and then riveted or welded or It is fixedly connected with the sleeve body 20 by bonding.
  • the other end of the push-pull member 40 passes through the second cavity 112 to facilitate the manipulation of the push-pull member 40 .
  • the push-pull member 40 is used to drive the sleeve body 20 to move relative to the head end base 12, so that the push-pull member 40 drives the sleeve body 20 to move relative to the head end base 12.
  • the number of push-pull members 40 is at least two, and the at least two push-pull members 40 are evenly distributed along the circumferential direction of the sleeve body 20 .
  • the multi-lumen tube 11 is provided with two second lumens 112, each second lumen 112 is provided with a push-pull member 40, and the two push-pull members 40 are respectively connected to the sleeve. Both sides of the body 20 are balanced, so that the forces on both sides of the sleeve body 20 are balanced. It is worth noting that the number of push-pull members 40 is not limited to two.
  • the number of second lumens 112 in the multi-lumen tube 11 is equal to the number of push-pull members 40 . same.
  • four push-pull members 40 are provided. By providing four push-pull members 40, the force at the connection between the single push-pull member 40 and the sleeve body 20 can be dispersed, thereby preventing the push-pull member 40 and the sleeve body 20 from being at the connection. Detach.
  • an escape groove 122 is provided on the peripheral side of the head end seat 12 , and the escape groove 122 is connected with the second cavity 112 .
  • the distal end of the push-pull member 40 passes through the avoidance groove 122 and can move along the avoidance groove 122, thereby preventing the push-pull member 40 from interfering with the head end seat 12.
  • the push-pull member 40 continues to advance along the avoidance groove 122, it can drive the sleeve body 20 to move axially, thereby driving the elastic section 22 to exceed the head end seat 12 or retract the elastic section 22 to the outside of the head end seat 12.
  • the diameter of the head seat 12 can also be controlled to prevent the head seat 12 from blocking the second cavity 112. Therefore, interference between the push-pull member 40 and the head end seat 12 can also be avoided.
  • the sleeve body 20 can also be kept stationary, and the relative movement of the sleeve body 20 and the head end base 12 can be achieved by driving the head end seat 12 to move axially.
  • the push-pull member 40 is not connected to the sleeve body 20 but directly connected to the head end seat 12, keeping the sleeve body 20 and the multi-lumen tube 11 motionless, and driving the head end seat 12 axially through the push-pull member 40.
  • the movement can also realize relative movement between the sleeve body 20 and the head end seat 12, thereby allowing the elastic section 22 to extend or retract.
  • the relative movement of the sleeve body 20 and the head end base 12 there are many ways to realize the relative movement of the sleeve body 20 and the head end base 12.
  • the relative movement of the sleeve body 20 and the head end base 12 can be achieved by adsorbing or releasing the sleeve body 20 or the head end base 12 through an electromagnetic field, which is not limited here.
  • the visual device also includes a bending control handle 60 and a pull wire 50.
  • the multi-lumen tube 11 is also provided with a third lumen 113 that runs through both ends of the multi-lumen tube 11, and the pull wire 50 passes through it. It is located in the third cavity 113, and one end of the pull wire 50 is connected to the head end seat 12, the other end of the pull wire 50 is connected to the bending control handle 60, the bending control handle 60 is connected to the proximal end of the multi-lumen tube 11, and the bending control handle 60 is used to pull the pull wire 50 to control the bending of the catheter assembly 10 so that the catheter assembly 10 can adapt to human body passages with different bending angles.
  • the bending control handle 60 is provided with a bending control knob 61, and the pulling wire 50 is connected to the bending control knob 61, so that the pulling wire 50 can be retracted or released by rotating the bending control knob 61, thereby controlling the bending of the catheter assembly 10.
  • the number of pull wires 50 is multiple, and the plurality of pull wires 50 are respectively connected to different positions on the circumference of the head end seat 12, so that the catheter assembly 10 can be controlled in different directions by pulling different pull wires 50 through the bending control handle 60.
  • the visual device can adapt to human body passages at various bending angles.
  • the multi-lumen tube 11 is also provided with a first instrument channel 114 that runs through both ends of itself, and the head end base 12 is provided with a second instrument channel 121 that runs through both ends of itself.
  • the first instrument channel 114 and the second instrument The channels 121 are connected.
  • the first instrument channel 114 and the second instrument channel 121 are arranged concentrically.
  • Surgical instruments can pass through the visual device through the first instrument channel 114 and the second instrument channel 121, and surgical operations can be performed with the assistance of the field of view provided by the visual device.
  • the surgical instrument includes but is not limited to one or more of a guide wire, a biopsy forceps, and a laser fiber.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features. In the description of this application, the meaning of "plurality” is at least two, such as two, Three, etc., unless otherwise expressly and specifically limited.
  • connection In this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch.
  • the terms “above”, “above” and “above” the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature.
  • "Below”, “below” and “beneath” the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

Abstract

一种可视装置，包括导管组件(10)、摄像头以及套体(20)，摄像头设置于导管组件(10)的远端端面(13)，套体(20)为两端开口的中空结构，套体(20)套设于导管组件(10)的远端，并且套体(20)与导管组件(10)能沿轴向相对移动，套体(20)包括沿远端方向顺序连接的连接段(21)以及弹性段(22)，连接端(21)套设于导管组件(10)的远端，连接段(21)与导管组件(10)能沿轴向相对移动，弹性段(22)被配置为：当套体(20)相对导管组件(10)朝远端移动至使得弹性段(22)的至少部分超出于导管组件(10)的远端端面(13)时，弹性段(22)径向收缩；当套体(20)相对导管组件(10)朝近端移动时，弹性段(22)在导管组件(10)的支撑下径向扩张。

Description

可视装置
相关申请
本申请要求2022年08月30日申请的，申请号为2022110494962，名称为“可视装置”的中国专利申请的优先权，以及2022年08月30日申请的，申请号为2022222962367，名称为“可视装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及医疗器械技术领域，特别是涉及一种可视装置。
背景技术
ERCP(经内视镜逆行性胆胰管摄影术)由于其不用开刀，创伤小，手术时间短，并发症较外科手术少等优点。在短短几十年中ERCP在临床上取得了巨大的成绩，成为胰胆疾病治疗及诊断中重要的方法之一。在ERCP手术中，医生首先由口腔放入十二指肠镜，经食道和胃到达十二指肠乳头处；再由十二指肠镜器械通道插入切开刀或胆道镜，通过X光透视的辅助下经十二指肠乳头处抵达胆胰管，最后注入造影液观察胆胰管内部的病变情况，并进行必要的治疗，例如放入引流管及支架、碎石及取石、狭窄扩张术等。
在治疗性ERCP中，由于乳头形状多样且其内部的括约肌在遇到机械刺激时易发生收缩，覆盖住胆胰管共有段。医生直接使用器械插管的难度较高，反复插入也会增加炎症及一系列并发症的风险，所以医生需要先使用导丝插入目标胆管或胰管，再循着导丝通道伸入切开刀或胆道镜。为了确认导丝进入的管腔位置，医生需要通过X光透视获得导丝相对十二指肠的弯曲角度。然而，由于乳头内部的通路在X光透视下并不能看清，加上括约肌收缩导致的阻力增加，导致“将导丝插入乳头并使其进入胆胰管”这一插管操作成为了ERCP的最难点。这一难点一方面大幅拉长了手术时间，另一方面也极大增加了由插管困难、反复插入导致的术后并发症，如胰腺炎、出血、穿孔的风险。
此外，由于X光透视本身的辐射问题，较为年轻的医生和护士会降低操作ERCP手术的意愿。同时，对怀孕的患者，即使可以通过限制透视时间、采用间断透视等方法来减少对胎儿的辐射，患者本身仍会较为抗拒ERCP手术。因此，透视的使用间接限制了ERCP的应用。除此之外，由于对X光透视的依赖，ERCP手术必须在专用的ERCP室进行。这增加了病人住院后的等待时间，也阻碍了ERCP手术的推广。ERCP在手术时长上的优势 也因为手术室排队等待的客观条件而无法得以发挥。另一方面，由于X光透视无法清晰提供胆胰管狭窄段的具体信息，手术中还需要结合造影来指导医生在胆胰管中的治疗性操作。可以说造影是为了弥补X光透视不足而额外增加的手术步骤，而造影液进入胰腺会造成内压升高，多增加了一个术后胰腺炎的诱发因素。
发明内容
基于此，有必要针对上述问题，提供一种可视装置。
一方面，本申请提供一种可视装置，包括：
导管组件；
摄像头，所述摄像头设置于所述导管组件的远端端面；以及，
套体，所述套体为两端开口的中空结构，所述套体包括沿远端方向顺序连接的连接段和弹性段，所述连接段套设于所述导管组件的远端，并且所述连接段与所述导管组件能沿轴向相对移动，所述弹性段被配置为：当所述连接段相对所述导管组件朝远端移动至使得所述弹性段的至少部分超出所述导管组件的远端端面时，所述弹性段径向收缩；当所述连接段相对所述导管组件朝近端移动时，所述弹性段在所述导管组件的支撑下径向扩张。
下面对本申请的技术方案作进一步的说明：
在其中一个实施例中，所述弹性段采用透明材料制成。
在其中一个实施例中，所述弹性段呈圆台状，并且所述弹性段的直径朝远离所述连接段的方向逐渐减小。
在其中一个实施例中，所述弹性段包括至少两个叶片，所有所述叶片沿所述连接段的周向围设在所述连接段的远端，所述叶片的一端与所述连接段的远端连接，所述叶片的另一端为自由端。
在其中一个实施例中，所述连接段开设有变形槽，所述变形槽沿轴向贯穿所述连接段的远端并且连通至相邻两个所述叶片之间的间隙。
在其中一个实施例中，沿靠近所述弹性段方向，所述变形槽的宽度逐渐增大。
在其中一个实施例中，所述可视装置还包括与所述摄像头电性连接的线束，所述导管组件包括：
多腔管，所述多腔管设有贯穿自身两端的第一腔道，所述线束穿设于所述第一腔道中；以及，
头端座，所述头端座设置于所述多腔管的远端，所述头端座设有与所述第一腔道连通的第一安装孔，所述第一安装孔贯穿所述头端座的远端，所述摄像头设置于所述第一安装 孔中，所述套体套设于所述头端座以及所述多腔管，所述套体与所述头端座能沿轴向相对移动。
在其中一个实施例中，所述连接段的轴向长度大于所述头端座的轴向长度。
在其中一个实施例中，所述可视装置还包括推拉件，所述多腔管还设有贯穿自身两端的第二腔道，所述推拉件可移动地穿设在所述第二腔道中，并且所述推拉件的一端与所述套体连接，所述推拉件的另一端穿出于所述第二腔道，所述推拉件用于驱动所述套体相对所述头端座移动。
在一实施例中，所述头端座的周侧开设有避让槽，所述避让槽与所述第二腔道连通。所述推拉件穿设在避让槽中，并能沿避让槽移动。
在其中一个实施例中，所述可视装置还包括推拉件，所述多腔管还设有贯穿自身两端的第二腔道，所述推拉件可移动地穿设在所述第二腔道中，并且所述推拉件的一端与所述头端座连接，所述推拉件的另一端穿出于所述第二腔道，所述推拉件用于驱动所述头端座相对所述套体移动。
在其中一个实施例中，所述可视装置还包括控弯手柄以及拉线，所述多腔管还设有贯穿自身两端的第三腔道，所述拉线穿设在所述第三腔道中，并且所述拉线的一端与所述头端座连接，所述拉线的另一端与所述控弯手柄连接，所述控弯手柄与所述多腔管的近端连接，所述控弯手柄用于牵引所述拉线。
在一实施例中，所述控弯手柄上设有控弯旋钮，所述拉线与所述控弯旋钮连接，所述控弯旋钮用于卷收或释放所述拉线。
在一实施例中，所述拉线的数量为多根，多根所述拉线分别连接在所述头端座的周侧的不同位置。
在其中一个实施例中，所述多腔管还开设有贯穿自身两端的第一器械通道，所述头端座开设有贯穿自身两端的第二器械通道，所述第一器械通道与所述第二器械通道相连通。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为一实施例的可视装置在套体相对导管组件朝远端移动后的结构示意图；
图2为图1所示的可视装置的剖视图；
图3为一实施例的可视装置在套体相对导管组件朝近端移动后的结构示意图；
图4为图3所示的可视装置的剖视图；
图5为一实施例的套体的结构示意图；
图6为另一实施例的套体的结构示意图；
图7为图6中所示的套体在另一视角下的结构示意图；
图8为又一实施例的套体的结构示意图；
图9为图8中所示的套体在另一视角下的结构示意图；
图10为一实施例的头端座的结构示意图；
图11为一实施例的多腔管的结构示意图；
图12为另一实施例的多腔管的结构示意图；
图13为一实施例的可视装置隐藏套体后的结构示意图；
图14为一实施例的可视装置的剖视图；
图15为一实施例的控弯手柄的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本实施例中，“远端”指的是远离手术操作者的一端，“近端”指的是靠近手术操作者的一端。“轴向”指的是沿着整体或部件轴线方向；“周向”指绕“轴向”旋转方向。“径向”指的是垂直于整体或部件轴线方向。
本申请一实施例提供一种可视装置，用于在ERCP术中为医生提供病灶处的直视图像以辅助医生完成治疗或检查。可理解地，本申请的可视装置也可应用在其他微创手术中。具体地，参见图1到图4，一实施例的可视装置包括导管组件10、摄像头(未图示)以及套体20。其中，摄像头设置于导管组件10的远端端面13，较佳地，摄像头与导管组件10的远端端面13平齐。摄像头用于获取患者体内的图像。套体20为两端开口的中空结构，套体20套设于导管组件10的远端，并且套体20与导管组件10能沿轴向相对移动，套体20包括沿远端方向顺序连接的连接段21以及弹性段22，连接端21套设于导管组件10的远端，弹性段22具有弹性变形能力，具体地，弹性段22被配置为：当套体20相对导管组件10朝远端移动至使得弹性段22的至少部分超出于导管组件10的远端端面时，弹性 段22径向收缩；当套体20相对导管组件10朝近端移动时，弹性段22在导管组件的支撑下径向扩张。
上述可视装置通过将摄像头设置于导管组件10的远端，从而通过导管组件10能将摄像头送入患者体内，在ERCP术中，摄像头能获取到直视十二指肠乳头的图像，从而取代传统的X光透视的平面侧视图像，降低了导丝或切开刀等器械寻找并进入乳头的难度，更有利于辅助医生进行手术操作。并且没有辐射，使医患双方对ERCP术的抵触进一步减轻，有助ERCP术推广和服务于更多的适应人群。同时，无需透视后，使得ERCP手术无需在特定的ERCP室进行，普通诊疗室亦可开展ERCP术，大幅降低患者的等待时间，提高医院的病床流动性。
同时上述可视装置通过在导管组件10的远端套设套体20，并且使套体20与导管组件10能沿轴向相对移动，从而在ERCP术中，当进行乳头插管或在狭窄的胆胰管共有段寻找分支时，通过驱动套体20相对导管组件10朝远端移动，使得至少部分的弹性段22位于导管组件10的远端端面13时，弹性段22径向收缩，使得弹性段22的直径缩小并小于导管组件10远端的直径，从而有助于套体20突破胆胰管的狭窄段，从而使得可视装置更易于穿过胆胰管的狭窄段，并且超出于远端端面13的弹性段22能撑开人体组织，使得人体组织与摄像头之间保持一定距离，从而打开了摄像头的视野，避免了由于导管组件10的远端端面13紧贴人体组织壁导致的摄像头无法获取到图像问题。通过摄像头能清楚地观察到人体组织壁，从而帮助医生在不借助X光透视的情况下快速区分胆胰管，进而加快手术速度。而在通过胆胰管的非狭窄段或当弹性段22内有絮状分泌物或积液阻碍摄像头成像时，又可通过驱动套体20相对导管组件10朝近端移动至套体20完全套设于导管组件10外，使得所述弹性段22在所述导管组件10的抵压下径向扩张，从而使得弹性段22远端的开口张大，从而能为摄像头提供更大的视野，同时也能使得絮状分泌物或积液排出，避免絮状分泌物或积液阻碍摄像头成像。
进一步地，为了进一步扩大摄像头的视野，在本实施例中，弹性段22被配置为透明材质，即弹性段22采用高透明或全透明的材料制成，从而使得摄像头不仅能从弹性段22的远端开口获得视野，还能透过弹性段22获得视野，从而扩大摄像头的视野，使得摄像头获取到的图像信息更全面。并且即使在胆胰管的狭窄段中，弹性段22被挤压变形导致远端开口被关闭，摄像头也能透过透明的弹性段22观察到胆胰管的管壁，从而帮助医生快速区分胆胰管。可选地，连接段21可采用透明的材料制成，也可采用非透明材料制成。可选地，连接段21与弹性段22为一体成型结构。
较佳地，参见图5，在本实施例中，弹性段22呈圆台状，并且弹性段22的直径朝远 离导管组件10的方向逐渐减小，即弹性段22为呈锥体形。锥体形的弹性段22更容易突破胆胰管的狭窄段，可辅助可视装置顺利穿过胆胰管的狭窄段，降低损伤组织的风险。较佳地，弹性段22的轴向长度为0.5mm-2mm，从而保证弹性段22有足够的长度超出于导管组件10的远端端面13，以撑开人体组织，避免摄像头贴壁，也避免弹性段22长度过长而导致弹性段22过于柔软导致支撑力不足问题。弹性段22的最小直径为1mm-1.5mm，从而保证弹性段22径向收缩时直径足够小以突破狭窄段。
进一步地，由于套体20能相对导管组件10移动，从而通过移动套体20能调整弹性段22的锥度以及弹性段22远端的开口大小，从而满足不同胆胰管的直径需求以及不同成像视野大小需求，例如在胆胰管的非狭窄段时，可将弹性段22少量伸出于导管组件10的远端，从而避免导管组件10的远端贴壁导致无法成像问题，同时也能使得弹性段22远端的开口较大，从而使得摄像头通过弹性段22远端的开口获得较大的视野。而在通过胆胰管的狭窄段时，可加长弹性段22伸出于导管组件10远端的长度，从而使弹性段22具备得更好的锥度，有助于导管组件10穿过狭窄段。
可选地，参见图6到图9，在其他实施例中，弹性段22也可以包括至少两个叶片221，所有叶片221沿连接段21的周向围设在连接段21的远端，叶片221的一端与连接段21的远端连接，叶片221的另一端为自由端。较佳地，所有叶片221的自由端朝弹性段22的中心聚拢，从而使得弹性段22大致呈锥体形，以便于可视装置穿过胆胰管的狭窄段。
进一步地，弹性段22中叶片221的数量可按需设置，例如图6所示，弹性段22包括两个叶片221，或者如图8所示，弹性段22包括四个叶片221。通过将弹性段22配置为包括至少两个叶片221，能使得弹性段22具有更好的弹性变形能力，在将套体20相对导管组件10朝近端移动时，所有叶片221能相互分离，从而减小弹性段22与导管组件10的摩擦力，从而更易于驱动套体20朝近端移动。
参见图6以及图7，连接段21开设有变形槽211，变形槽211贯穿连接段21的远端并且连通至相邻两个叶片221之间的间隙。通过在连接段21开设变形槽211，使得连接段22有一定被撑开或压缩空间，增加了连接段21的变形能力，使得收回弹性段22时，连接段22的更易于被导管组件10撑开，能进一步降低弹性段22回收时的难度，便于医生操作。较佳地，沿靠近所述弹性段22方向，所述变形槽的宽度逐渐增大，从而使得连接段21的远端的变形空间更大，进一步提高连接段22的远端的变形能力，进而进一步降低弹性段22回收时的难度。
进一步地，在本实施例中，可视装置还包括光源(未图示)以及线束30。线束30与摄像头以及光源电性连接用于供电以及数据传输。摄像头可以为CMOS图像传感器、CCD 相机，光源可以为LED、光纤等。
进一步地，参见图10到图12，在本实施例中，导管组件10包括多腔管11以及头端座12，头端座12连接于多腔管11的远端。较佳地，多腔管11与端头座12可以为嵌套连接、螺纹连接、或粘接连接等。其中多腔管11设有贯穿自身两端的第一腔道111，线束30穿设于第一腔道111中，线束30一端与摄像头以及光源连接以实现供电以及数据传输，线束30远离摄像头的一端用于连接至主机上，从而将摄像头获取到的图像信息通过主机显示。摄像头以及光源设置于头端座12。进一步地，套体20套设于头端座12以及多腔管11，套体20与头端座12能沿轴向相对移动。进一步地，在本实施例中，多腔管11与头端座12为分体式设计，在其他实施例中，多腔管11也可以与头端座12为一体成型设计。
较佳地，连接段21的长度大于头端座12的长度，从而保证在弹性段22相对导管组件10朝远端移动至完全伸出于导管组件10的远端时，连接段21依旧能覆盖多腔管11与头端座12的连接缝隙，从而避免体液通过连接缝隙渗透进入多腔管11内。
可选地，在本实施例中，可视装置还包括推拉件40，多腔管11还设有贯穿自身两端的第二腔道112，推拉件40可移动地穿设在第二腔道112中，并且推拉件40的一端与套体20连接，较佳地，套体20的连接段21开设有连接孔23，推拉件40的远端穿设在连接孔23中再通过铆接或焊接或粘接的方式与套体20固定连接。推拉件40的另一端穿出于第二腔道112以便于操纵推拉件40。推拉件40用于驱动套体20相对头端座12移动，从而通过推拉件40驱动套体20相对头端座12移动。
较佳地，为了提高套体20移动时的平衡性。推拉件40的数量为至少两个，至少两个推拉件40沿套体20的周向均匀分布。例如图11所示，在本实施例中，多腔管11开设有两个第二腔道112，每个第二腔道112均设有一个推拉件40，两个推拉件40分别连接在套体20的两侧，从而使得套体20两侧受力平衡。值得说明的是，推拉件40的数量不限于两个，在其他实施例中也可以是三个、四个或更多，多腔管11中第二腔道112的数量与推拉件40的数量相同。例如图12所示，设置有四个推拉件40，通过设置四个推拉件40，能分散单个推拉件40与套体20连接处的受力，从而避免推拉件40与套体20在连接处脱离。
进一步地，参见图13，在本实施例中，头端座12的周侧开设有避让槽122，避让槽122与第二腔道112连通。推拉件40的远端穿设在避让槽122中，并能沿避让槽122移动，从而避免推拉件40与头端座12发生干涉。具体地，推拉件40沿避让槽122继续前进时能带动套体20轴向移动，进而带动弹性段22超出头端座12或收回弹性段22至头端座12外。在另一实施例中，也可以通过控制头端座12的直径，避免头端座12封堵第二腔道112， 从而也能避免推拉件40与头端座12发生干涉。
可理解地，在其他实施例中，也可以使套体20保持不动，通过驱动头端座12轴向移动以实现套体20与头端座12的相对移动。具体地，在另一实施例中，推拉件40不连接套体20而是直接连接头端座12，保持套体20与多腔管11不动，通过推拉件40驱动头端座12轴向移动也能实现套体20与头端座12的相对移动，进而实现弹性段22伸出或回收。
值得说明的是，能实现套体20与头端座12相对移动的方式还有很多，除了上述通过推拉件40推拉套体20或头端座12的实施方式外，也可通过其他方式实现，例如可通过电磁场吸附或释放套体20或头端座12的方式实现套体20与头端座12相对移动等，在此不做限制。
可选地，参见图11以及图15，在一实施例中，可视装置还包括控弯手柄60以及拉线50，多腔管11还设有贯穿自身两端的第三腔道113，拉线50穿设在第三腔道113中，并且拉线50的一端与头端座12连接，拉线50的另一端与控弯手柄60连接，控弯手柄60与多腔管11的近端连接，控弯手柄60用于牵引拉线50，从而控制导管组件10弯曲，以便导管组件10适应不同弯曲角度的人体通道。具体地，控弯手柄60上设有控弯旋钮61，拉线50与控弯旋钮61连接，从而通过旋转控弯旋钮61即可卷收或释放拉线50，进而实现控制导管组件10弯曲。较佳地，拉线50的数量为多根，多根拉线50分别连接在头端座12的周侧的不同位置，从而通过控弯手柄60牵引不同拉线50，即可控制导管组件10朝不同方向弯曲，使得可视装置能适应各种弯曲角度的人体通道。
继续参见图10以及图11，多腔管11还开设有贯穿自身两端的第一器械通道114，头端座12开设有贯穿自身两端的第二器械通道121，第一器械通道114与第二器械通道121相连通，较佳地，第一器械通道114与第二器械通道121同心设置。手术器械可通过第一器械通道114以及第二器械通道121穿过可视装置，并在可视装置提供的视野辅助下进行手术操作。具体地，手术器械包括但不限于导丝、活检钳、激光光纤中的一个或多个。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个， 三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种可视装置，其特征在于，包括：
    导管组件；
    摄像头，所述摄像头设置于所述导管组件的远端端面；以及，
    套体，所述套体为两端开口的中空结构，所述套体包括沿远端方向顺序连接的连接段和弹性段，所述连接段套设于所述导管组件的远端，并且所述连接段与所述导管组件能沿轴向相对移动，所述弹性段被配置为：当所述连接段相对所述导管组件朝远端移动至使得所述弹性段的至少部分超出所述导管组件的远端端面时，所述弹性段径向收缩；当所述连接段相对所述导管组件朝近端移动时，所述弹性段在所述导管组件的支撑下径向扩张。
  2. 根据权利要求1所述的可视装置，其特征在于，所述弹性段采用透明材料制成。
  3. 根据权利要求1所述的可视装置，其特征在于，所述弹性段呈圆台状，所述弹性段的直径朝远离所述连接段的方向逐渐减小。
  4. 根据权利要求1所述的可视装置，其特征在于，所述弹性段包括至少两个叶片，所有所述叶片沿所述连接段的周向围设在所述连接段的远端，所述叶片的一端与所述连接段的远端连接，所述叶片的另一端为自由端。
  5. 根据权利要求4所述的可视装置，其特征在于，所述连接段开设有变形槽，所述变形槽沿轴向贯穿所述连接段的远端并且连通至相邻两个所述叶片之间的间隙。
  6. 根据权利要求5所述的可视装置，其特征在于，沿靠近所述弹性段方向，所述变形槽的宽度逐渐增大。
  7. 根据权利要求1所述的可视装置，其特征在于，所述可视装置还包括与所述摄像头电性连接的线束；所述导管组件包括：
    多腔管，所述多腔管设有贯穿自身两端的第一腔道，所述线束穿设于所述第一腔道中；以及，
    头端座，所述头端座设置于所述多腔管的远端，所述头端座设有与所述第一腔道连通的第一安装孔，所述第一安装孔贯穿所述头端座的远端，所述摄像头设置于所述第一安装孔中，所述套体套设于所述头端座以及所述多腔管，所述套体与所述头端座能沿轴向相对移动。
  8. 根据权利要求7所述的可视装置，其特征在于，所述连接段的轴向长度大于所述头端座的轴向长度。
  9. 根据权利要求7所述的可视装置，其特征在于，所述可视装置还包括推拉件，所 述多腔管还设有贯穿自身两端的第二腔道，所述推拉件可移动地穿设在所述第二腔道中，并且所述推拉件的一端与所述套体连接，所述推拉件的另一端穿出于所述第二腔道，所述推拉件用于驱动所述套体相对所述头端座移动。
  10. 根据权利要求9所述的可视装置，其特征在于，所述头端座的周侧开设有避让槽，所述避让槽与所述第二腔道连通，所述推拉件穿设在避让槽中并能沿所述避让槽移动。
  11. 根据权利要求7所述的可视装置，其特征在于，所述可视装置还包括推拉件，所述多腔管还设有贯穿自身两端的第二腔道，所述推拉件可移动地穿设在所述第二腔道中，并且所述推拉件的一端与所述头端座连接，所述推拉件的另一端穿出于所述第二腔道，所述推拉件用于驱动所述头端座相对所述套体移动。
  12. 根据权利要求7所述的可视装置，其特征在于，所述可视装置还包括控弯手柄以及拉线，所述多腔管还设有贯穿自身两端的第三腔道，所述拉线穿设在所述第三腔道中，并且所述拉线的一端与所述头端座连接，所述拉线的另一端与所述控弯手柄连接，所述控弯手柄与所述多腔管的近端连接，所述控弯手柄用于牵引所述拉线。
  13. 根据权利要求12所述的可视装置，其特征在于，所述控弯手柄上设有控弯旋钮，所述拉线与所述控弯旋钮连接，所述控弯旋钮用于卷收或释放所述拉线。
  14. 根据权利要求12所述的可视装置，其特征在于，所述拉线的数量为多根，多根所述拉线分别连接在所述头端座的周侧的不同位置。
  15. 根据权利要求7所述的可视装置，其特征在于，所述多腔管还开设有贯穿自身两端的第一器械通道，所述头端座开设有贯穿自身两端的第二器械通道，所述第一器械通道与所述第二器械通道相连通。
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JP2002320588A (ja) * 2001-04-26 2002-11-05 Olympus Optical Co Ltd 内視鏡挿入補助具
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