CN115040063A - Biliary tract photography catheter system and use method - Google Patents

Biliary tract photography catheter system and use method Download PDF

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Publication number
CN115040063A
CN115040063A CN202210655880.0A CN202210655880A CN115040063A CN 115040063 A CN115040063 A CN 115040063A CN 202210655880 A CN202210655880 A CN 202210655880A CN 115040063 A CN115040063 A CN 115040063A
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China
Prior art keywords
camera
biliary tract
photography
guide wire
catheter
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Pending
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CN202210655880.0A
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Chinese (zh)
Inventor
黄晓俊
龚爱华
张耀平
尚有军
郝晋雍
罗枰州
刘英桦
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Beijing Richen Force Science & Technology Co ltd
Lanzhou University Second Hospital
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Beijing Richen Force Science & Technology Co ltd
Lanzhou University Second Hospital
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Application filed by Beijing Richen Force Science & Technology Co ltd, Lanzhou University Second Hospital filed Critical Beijing Richen Force Science & Technology Co ltd
Priority to CN202210655880.0A priority Critical patent/CN115040063A/en
Publication of CN115040063A publication Critical patent/CN115040063A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00119—Tubes or pipes in or with an endoscope
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00124—Connectors, fasteners and adapters, e.g. on the endoscope handle electrical, e.g. electrical plug-and-socket connection
    • 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
    • A61B1/012—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
    • A61B1/015—Control of fluid supply or evacuation
    • 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
    • A61B1/05—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 characterised by the image sensor, e.g. camera, being in the distal end portion
    • 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
    • A61B1/06—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 with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0684—Endoscope light sources using light emitting diodes [LED]
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0113—Mechanical advancing means, e.g. catheter dispensers

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Pulmonology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Endoscopes (AREA)

Abstract

The application relates to a biliary tract photography catheter system and a using method thereof, wherein the biliary tract photography catheter system comprises: the camera, the connecting component, the inserting conduit, the handle and the direction adjusting rod are connected in sequence; the camera is in including making a video recording the casing and setting the camera lens module of casing front end makes a video recording, the rear end of casing of making a video recording is connected with the accent and to the steel wire, transfer to the steel wire and pass in proper order insert the pipe reach the handle and with transfer to the pole and connect mutually. The angle of the camera head can be changed, multi-angle and multi-direction fine diagnosis and examination can be carried out on the focus, and the situation that operators and patients receive high-dose X-ray radiation is effectively avoided.

Description

Biliary tract photography catheter system and use method
Technical Field
The application relates to the technical field of medical instruments, in particular to a biliary tract photography catheter system and a using method thereof.
Background
Endoscopic Retrograde Cholangiopancreatography (ERCP) is the most important diagnosis and treatment technique for cholecystopancreatic diseases, and is widely applied to diagnosis and treatment of bile duct stones, bile duct tumors, pancreatic duct stones, pancreatitis and other diseases. However, this technique must be performed by means of X-ray fluoroscopy, cannot be performed under direct vision as in a gastrointestinal endoscopic surgery, and requires passive exposure of the operator and patient to high doses of X-ray radiation.
In addition, most of the existing photography systems for the internal cavity of the organ only can adjust the camera at the front and back telescopic positions, but cannot rotate in the cavity of the organ, so that the photography visual field is limited, and the focus part cannot be effectively and finely diagnosed.
Disclosure of Invention
The application aims to provide a biliary tract photography catheter system and a using method thereof, which can directly observe the size and the position of a mucosal surface structure and calculus/tumor in a pancreaticobiliary tract cavity by an electronic photography technology, can change the angle of a photography head, carry out multi-angle and multi-direction fine examination on a focus, and effectively prevent operators and patient operators from receiving high-dose X-ray radiation.
In order to achieve the above object, in a first aspect, the present invention provides a biliary tract photography catheter system including: the camera, the connecting component, the inserting conduit, the handle and the direction adjusting rod are connected in sequence; the camera is in including making a video recording the casing and setting the camera lens module of casing front end makes a video recording, the rear end of casing of making a video recording is connected with the accent and to the steel wire, transfer to the steel wire and pass in proper order insert the pipe reach the handle and with transfer to the pole and connect mutually.
In an optional embodiment, the direction-adjusting steel wire is connected to an edge of the rear end face of the camera housing, and the connecting assembly includes a spring which is arranged between the camera housing and the insertion guide pipe and can enable the camera housing to elastically return after the direction adjustment.
In an optional embodiment, the lens module is connected with a transmission cable, the connecting assembly comprises a connecting conduit for the transmission cable to penetrate through, a transmission cable cavity is arranged inside the inserting conduit, and the transmission cable sequentially passes through the camera shell, the connecting conduit and the transmission cable cavity and is laterally extended out of the front end of the handle.
In an optional embodiment, a direction-adjusting steel wire cavity channel is arranged inside the insertion catheter, a direction-adjusting steel wire channel is arranged inside the handle, and the direction-adjusting steel wire can penetrate through the direction-adjusting steel wire cavity channel and the direction-adjusting steel wire channel in a drawing mode and is connected with the front end of the direction-adjusting rod.
In an optional embodiment, a wire ring for guiding a guide wire to pass through is arranged on a side wall of the camera housing, a guide wire cavity for the guide wire to pass through is arranged in the insertion catheter, a guide wire eduction tube for the guide wire to pass through is arranged on a side wall of the handle, and the tail end of the guide wire sequentially passes through the wire ring, the guide wire cavity and the handle and extends out of the guide wire eduction tube.
In an optional embodiment, a water and gas injection channel is arranged inside the insertion conduit, a water and gas injection channel communicated with the water and gas injection channel is arranged inside the handle, and a water and gas injection pipe is arranged on a side wall of the handle.
In an alternative embodiment, the front end of the insertion catheter comprises a chamfer, and the direction-adjusting steel wire channel, the guide wire channel and the water and gas injection channel respectively comprise an oval chamfer positioned on the chamfer.
In an optional embodiment, the lens module comprises a lens, an image sensor and a PCBA board, a plurality of LED lamp beads are uniformly distributed on the circumference of the lens, and the lens module and the LED lamp beads are electrically connected with the transmission cable respectively;
the transmission cable is connected with a host, an image processor is arranged in the host, and the host is connected with a high-definition video display.
In an alternative embodiment, the camera housing has a diameter of 2.3mm or less, the transmission cable has a diameter of 0.6mm or less, and the insertion tube has a diameter of 2.8mm or less.
In a second aspect, the present invention provides a method for using a biliary tract photography catheter system, comprising the steps of:
carrying out pancreaticocholangiography to keep the guide wire;
inserting the camera, the connecting assembly and the insertion catheter into the target bile duct through threading of the guide wire;
the direction adjusting rod is rotated and pulled to change the angle of the camera, so that the focus is examined.
Through the lens module that sets up at camera casing front end, can carry out direct examination to the pathological change position in the pancreas bile duct, can directly observe the size and the position of pancreas bile duct intracavity mucosa surface structure and calculus/tumour through the electronic photography means, provide live image for the doctor, improved diagnosis accuracy and operation precision.
By means of direct examination, X-ray fluoroscopy is not needed or is less needed, and operators and patient operators are prevented from receiving high-dose X-ray radiation.
The angle of the camera can be adjusted through the direction adjusting steel wire connected with the direction adjusting rod by combining with the control direction adjusting rod, so that the variable-angle and multi-direction fine examination of the focus position can be realized.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic view of the overall structure of a biliary tract photography catheter system in the present application;
fig. 2 is a schematic structural diagram of a camera in the present application;
FIG. 3 is a schematic view of a connecting assembly of the present application;
FIG. 4 is a schematic cross-sectional view of the catheter inserted in the present application;
FIG. 5 is a schematic view of the handle and steering rod of the present application;
FIG. 6 is a schematic view of the operation of the camera in the direction-changing process in the present application;
fig. 7 is a schematic structural diagram of the connection between the biliary tract photography catheter system and the external device in the present application.
Icon:
1-a camera; 11-a lens module; 12-LED lamp beads; 13-a camera housing; 14-a wire loop; 15-a transmission cable;
2-connecting the components; 21-a connecting conduit; 22-a spring;
3-inserting a catheter; 31-transmission cable channels; 32-guide wire lumen; 33-water and gas injection cavity channel; 34-adjusting the direction of the steel wire cavity;
4-a handle; 41-transmission cable exit; 42-water and gas injection pipe; 43-a guide wire exit tube; 44-adjusting the direction to a steel wire outlet;
5-a direction-adjusting component; 51-direction-adjusting steel wires; 52-steering rod;
6-a host;
7-high definition video display.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The biliary tract photography catheter system is mainly used for directly observing the structures in bile duct cavities and the pathological changes of mucous membranes, and can improve the accuracy of diagnosis of bile duct diseases especially for early tumors and small pathological changes.
Referring to fig. 1, and with reference to fig. 2-7, the biliary tract photography catheter system of the present invention mainly includes a camera 1, a connection assembly 2, an insertion catheter 3, a handle 4, and a direction-adjusting assembly 5, which are connected in sequence.
The camera 1 is mainly used for collecting image information of an inner cavity of a biliary tract, and comprises a camera shell 13 and a lens module 11 arranged at the front end of the camera shell 13, wherein a steering steel wire 51 is connected at the rear end of the camera shell 13, and the steering steel wire 51 pulls the camera shell 13 through a steering rod 52, so that the angle direction of the camera shell 13 can be changed, the lens module 11 positioned at the front end of the camera shell 13 can obtain a wider and wider visual field, and fine diagnosis can be performed through an electronic camera shooting means.
The connecting assembly 2 is arranged between the camera 1 and the insertion guide pipe 3, the connecting assembly 2 can elastically deform and has certain bending flexibility, and the main purpose is to enable the camera 1 to change the angle under the traction of the steering steel wire 51.
The direction adjustment wire 51 is provided outside the connection unit 2 so as to avoid interference with the connection unit 2 without being connected to the connection unit 2, and when the direction adjustment wire 51 pulls the camera housing 13, the connection unit 2 bends with the change in the direction of the camera housing 13. Meanwhile, since the angle direction of the camera 1 is only required to be changed at the front end of the system, the insertion catheter 3 does not need to be changed in shape and angle during operation, and only needs to be threaded by the direction-adjusting steel wire 51. The direction-adjusting steel wire 51 sequentially penetrates through the insertion catheter 3 and the handle 4 and is connected with the direction-adjusting rod 52, and the direction-adjusting steel wire 51 can drive the camera 1 at the front end to be angularly adjusted by applying a pulling force of back drawing to the direction-adjusting rod 52, so that the angle change and multidirectional fine examination of the focus part can be realized.
In one embodiment, the edge of the steering wire 51 connected to the rear end face of the camera housing 13 can effectively apply a pulling force to the edge of the camera housing 13, so as to pull the camera 1 to change the angle in a wider range.
The connecting assembly 2 comprises a spring 22 connected between the camera housing 13 and the insertion tube 3, wherein the spring 22 enables the camera housing 13 to be elastically restored after being turned back. When not in direction, the spring 22 remains straight; after adjusting the angle of camera 1, because no longer by the constraint of transferring to steel wire 51, spring 22 can elastic reset, drives camera 1 and just returns, when realizing camera 1 angular adjustment, has strengthened the flexibility of use.
The lens module 11 is connected with a transmission cable 15 for information transmission and power supply, and the connecting assembly 2 includes a connecting conduit 21 for passing the transmission cable 15 therethrough, and the connecting conduit 21 is disposed inside the spring 22. The inserting conduit 3 is internally provided with a transmission cable cavity 31, the transmission cable 15 sequentially passes through the camera shell 13, the connecting conduit 21 and the transmission cable cavity 31 and extends out from the front end side of the handle 4, the handle 4 is positioned outside the body in the using process, and the transmission cable 15 can be connected with external equipment after extending out from the handle 4 and is used for transmitting the image information obtained by the camera 1 outwards.
The direction-adjusting steel wire cavity channel 34 is arranged in the insertion conduit 3, the direction-adjusting steel wire 51 channel is arranged in the handle 4, the direction-adjusting steel wire 51 can be drawn and pulled to penetrate through the direction-adjusting steel wire cavity channel 34 in the insertion conduit 3 and the direction-adjusting steel wire 51 channel in the handle 4, and is connected with the front end of the direction-adjusting rod 52, and the angle of the camera 1 can be adjusted by pulling the direction-adjusting steel wire 51 through the direction-adjusting rod 52.
The biliary tract photography catheter system of the invention is mainly guided by a guide wire reserved for pancreaticocholangiography and enters the biliary tract, a wire ring 14 for leading the guide wire is arranged on the side wall of the camera shell 13, a guide wire cavity 32 for leading the guide wire to pass is arranged in the insertion catheter 3, and a guide wire eduction tube 43 for leading the guide wire to pass is arranged on the side wall of the handle 4. When the biliary tract photography catheter system is placed, the tail end of the guide wire exposed outside the body sequentially reversely passes through the wire ring 14 on the camera shell 13, the guide wire cavity 32 inserted into the catheter 3 and the handle 4, and extends out of the guide wire eduction tube 43, and then the catheter system enters the biliary tract under the guiding action of the guide wire.
In order to keep a clear view, the biliary tract is washed by water injection and air injection, a water injection and air injection channel 33 is arranged in the insertion conduit 3, a water injection and air injection channel communicated with the water injection and air injection channel 33 is arranged in the handle 4, and a water injection and air injection pipe 42 is arranged on the side wall of the handle 4. During cleaning operation, the injected water or gas sequentially passes through the mutually communicated water and gas injection pipe 42, the water and gas injection channel and the water and gas injection cavity 33 from outside to inside, and is injected into the biliary tract through the water and gas injection hole at the front end of the water and gas injection cavity 33, so that the technical purpose of flushing the biliary tract is realized.
In order to improve the smoothness of the insertion tube 3 extending forward and reduce the forward pushing resistance, the front end of the insertion tube 3 includes a bevel cut, and the direction-adjusting steel wire channel 34, the guide wire channel 32 and the water-injecting and gas-injecting channel 33 respectively include a bevel cut with an elliptical cross section on the bevel cut, specifically, the bevel cut includes a direction-adjusting steel wire hole, a guide wire hole and a water-injecting and gas-injecting hole corresponding to the different channels.
In another specific embodiment, the lens module 11 includes camera lens, image sensor and PCBA board, and the circumference equipartition of camera lens has a plurality of LED lamp pearls 12, can provide certain luminance for the position that the camera lens can detect, and image sensor is used for acquireing the image information that the camera lens was gathered. Lens module 11 and LED lamp pearl 12 are connected with transmission cable 15 electricity respectively, can provide the electric power guarantee to make transmission information obtain reliable transmission.
The transmission cable 15 is connected with the host computer 6 after laterally stretching out from the front end of the handle 4, an image processor is arranged inside the host computer 6, and the host computer 6 is connected with a high-definition video display 7, and can display the acquired images in the biliary tract internal cavity in real time.
The biliary tract imaging catheter system of the present invention is a superfine biliary tract imaging catheter system, and is described below with specific different compositions.
The camera 1 comprises a lens module 11, LED lamp beads 12, a camera shell 13, a wire loop 14 and a transmission cable 15, wherein the lens module 11 comprises a lens, an image sensor and a PCBA board, the pixels of the PCBA board are more than or equal to 16 ten thousand pixels, the visual angle of the PCBA board is more than or equal to 120 degrees, and the transmission speed is 30 fps; the LED lamp beads 12 comprise 2-4 LED lamp beads 12 which are symmetrically arranged around the lens and are electrically connected with each other; the lens module 11 and the LED lamp beads 12 are electrically connected with a transmission cable 15 and are packaged in a camera shell 13; the camera shooting shell 13 is cast by metal materials, the length is less than or equal to 6mm, the outer diameter is less than or equal to 2.3mm, the outer wall is provided with a wire loop 14 which is used for threading a guide wire and is made of medical nylon wires, the wire loop 14 is a thin wire loop 14 for threading the guide wire, and the inner diameter is more than or equal to 1 mm; transmission cable 15 is a six-core shielded wire, the cable diameter is less than or equal to 0.6mm, length is less than or equal to 4000mm, including two LED power supply lines and four module power supply and signal transmission line, there are insulating layer and waterproof layer on transmission cable 15's surface, transmission cable 15 head end is connected with camera lens module 11 and LED lamp pearl 12 electricity, run through connecting tube 21 among the coupling assembling 2 and the transmission cable chamber way 31 in the insert pipe 3, wear out from the cable export of handle 4 front end lateral part, be connected with host computer 6 through the plug.
The connecting conduit 21 of the connecting component 2 comprises a Teflon conduit with the outer diameter of about 1.2mm, the inner diameter of more than or equal to 8mm and the length of about 10mm, a thin spring 22 steel wire is wound outside the conduit wall to form a spring 22, the head end of the connecting conduit 21 is hermetically connected with the camera 1, the tail end of the connecting conduit 21 is hermetically connected with a transmission cable cavity 31 inserted into the conduit 3, and a transmission cable 15 penetrates through the cavity.
The insertion conduit 3 is a four-cavity conduit formed by injection molding of medical Teflon materials, the total length of the conduit is about 2000mm, the outer diameter of the conduit is less than or equal to 2.8mm, the four cavities are through cavities and respectively comprise a transmission cable cavity 31, a guide wire cavity 32, a water and gas injection cavity 33 and a direction-adjusting steel wire cavity 34, the inner diameter of the transmission cable cavity 31 is less than or equal to 0.8mm, the inner diameter of the guide wire cavity 32 is less than or equal to 1.4mm, the inner diameter of the water and gas injection cavity 33 is less than or equal to 0.7mm, and the inner diameter of the direction-adjusting steel wire cavity 34 is less than or equal to 0.5 mm. The head end of the insertion catheter 3 is provided with four cavity openings, wherein the transmission cable cavity 31 is hermetically connected with the tail end of the connecting catheter 21, the guide wire cavity 32, the water and gas injection cavity 33 and the opening of the direction-adjusting steel wire cavity 34 are opened for oblique plane processing, so that the threading operation of the guide wire and the direction-adjusting steel wire 51 can be facilitated, and the tail end of the insertion catheter 3 is hermetically connected with the head end of the handle 4.
The handle 4 is an integral functional structural member formed by pressing medical plastics, four cavities are arranged in the handle, the front end of the handle is respectively communicated with the four cavities of the inserted catheter 3 in a sealing way, and four cavity outlets or branch pipes are respectively arranged at the body part and the tail end of the handle, namely: a transmission cable outlet 41, a guide wire eduction tube 43, a water and gas injection tube 42 and a direction-adjusting steel wire outlet 44.
The direction-adjusting component 5 comprises a direction-adjusting steel wire 51 and a direction-adjusting rod 52 connected with the direction-adjusting steel wire 51, the direction-adjusting steel wire 51 is a stainless steel wire with the diameter less than or equal to 0.3mm, the direction-adjusting steel wire cavity 34 inserted into the catheter 3 penetrates out from the head end of the inserted catheter 3, the direction-adjusting steel wire is welded below the camera shell 13 on the camera 1, the tail part penetrates out from the tail end outlet of the handle 4 and is fixedly connected with the direction-adjusting rod 52, and the direction-adjusting rod 52 is formed by injection molding of medical plastics.
The drawing direction adjusting rod 52 can bend the camera shell 13 downwards, after drawing is removed, the elasticity of the spring 22 in the connecting component 2 enables the camera shell 13 to automatically reset, the rotating direction adjusting rod 52 can drive the direction adjusting steel wire 51 and the camera shell 13 to synchronously rotate for 0-360 degrees, so that the multi-direction and multi-angle direction adjusting function is realized, a guide wire is inserted through the guide wire eduction tube 43 of the handle 4, is arranged in the guide wire cavity 32 of the inserted catheter 3 in a penetrating way and penetrates out through the outlet at the head end, the whole camera catheter system is inserted into a corresponding tube cavity in a biliary tract along the guide wire, and the guide wire can also pass through the wire loop 14 to enable the camera shell 13 and the guide wire to be integrated into a whole when necessary, so that the camera shell 13 can accurately enter a target tube cavity in the biliary tract along the guide wire.
The special image processor and related software programs for the endoscope are arranged inside the host 6 connected with the transmission cable 15, the host 6 is connected with the high-definition video display 7, and the image information acquired by the transmission cable 15 is processed by the special software programs and then displayed on the high-definition video display 7 in real time.
The invention also provides a using method of the biliary tract photography catheter system, taking an operation process as an example, a duodenoscope is inserted into the papilla of the duodenum, an ERCP cannula is used for radiography in a conventional way, and a guide wire is left after the duodenoscope enters a target bile duct. The tail end of the guide wire is inserted into the wire ring 14 and the guide wire cavity 32 in a retrograde manner and penetrates out of the guide wire eduction tube 43, the biliary tract photography catheter system is inserted into the target bile duct along the guide wire, water is injected through the water injection and gas injection cavity 33, the biliary tract is washed, and the visual field in the biliary tract is ensured to be clear. And starting a camera switch to fully observe the target bile duct, and taking a picture. According to the requirement, the guide wire direction is adjusted or the direction adjusting rod 52 is rotated and pulled to change the angle of the camera 1, so that the focus is finely examined in multiple angles and directions. When necessary, the guide wire is withdrawn, and special biopsy forceps are inserted through the guide wire hole to perform mucosa tissue biopsy.
The photographic catheter system can directly observe the pathological changes of the structure and the mucous membrane in the biliary tract cavity, and improves the accuracy of diagnosing bile duct diseases, particularly early tumors and tiny pathological changes.
In addition, the X-ray radiation dose passively received by an operator and a patient is reduced through a direct observation mode; the diameter of the photographic catheter is thin, the flexibility is strong, thinner bile pancreatic duct pathological changes can be observed under the guidance of the guide wire, even the bile duct can enter a gallbladder for examination, the camera 1 at the front end of the photographic catheter can be bent to one side by pulling the direction adjusting rod 52, and the spring 22 of the connecting component 2 can automatically reset after the pulling is released; the camera 1 can be rotated by rotating the direction adjusting rod 52 so as to carry out multi-angle examination on the focus; the water and gas injection pipe 42 can inject water to wash the biliary tract, keep the visual field clear, and inject contrast agent if necessary for contrast examination under X-ray; if necessary, biopsy can be taken by special biopsy forceps with diameter less than or equal to 1.2mm for biliary tract.
The biliary tract photography catheter is disposable, has no risk of cross infection in operation, is simple and convenient to operate, has controllable cost, and can be popularized and applied in vast primary hospitals.
It should be noted that, in addition to being applied to the biliary tract, the photography catheter of the present invention can also be used for examination of other tracts such as the pancreatic duct, the cystic duct and the appendix, and meanwhile, the water injection and gas injection functions can also be incorporated into the guide wire duct, and the three-lumen catheter is changed into the triple-lumen catheter, which can also achieve the technical purposes of guide wire threading and cleaning the tracts, and is not repeated herein.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A biliary tract photography catheter system, comprising: the camera, the connecting component, the inserting conduit, the handle and the direction adjusting rod are connected in sequence; the camera is in including making a video recording the casing and setting the camera lens module of casing front end makes a video recording, the rear end of casing of making a video recording is connected with the accent and to the steel wire, transfer to the steel wire and pass in proper order insert the pipe reach the handle and with transfer to the pole and connect mutually.
2. The biliary tract photography catheter system according to claim 1, wherein the direction-adjusting wire is connected to an edge on a rear end face of the camera housing, and the connection assembly comprises a spring which is arranged between the camera housing and the insertion catheter and can elastically return the camera housing after being adjusted backwards.
3. The biliary tract photography catheter system according to claim 1, wherein the lens module is connected to a transmission cable, the connection assembly includes a connection catheter for the transmission cable to pass through, a transmission cable channel is disposed inside the insertion catheter, and the transmission cable sequentially passes through the camera housing, the connection catheter and the transmission cable channel and extends out of the front end of the handle.
4. The biliary tract photography catheter system according to claim 3, wherein a direction-adjusting wire channel is provided inside the insertion catheter, a direction-adjusting wire channel is provided inside the handle, and the direction-adjusting wire is inserted through the direction-adjusting wire channel and the direction-adjusting wire channel in a drawable manner and connected to a front end of the direction-adjusting rod.
5. The biliary tract photography catheter system according to claim 4, wherein a wire ring for passing a guide wire is disposed on a side wall of the imaging housing, a guide wire lumen for passing the guide wire is disposed inside the insertion catheter, a guide wire exit tube for passing the guide wire is disposed on a side wall of the handle, and a tail end of the guide wire passes through the wire ring, the guide wire lumen and the handle in sequence and extends from the guide wire exit tube.
6. The biliary tract photography catheter system according to claim 5, wherein the insertion catheter is internally provided with a water injection and air injection channel, the handle is internally provided with a water injection and air injection channel communicated with the water injection and air injection channel, and a water injection and air injection pipe is arranged on a side wall of the handle.
7. The biliary tract photographic catheter system according to claim 6, wherein the insertion catheter comprises a beveled cut at a front end thereof, and the direction-adjusting wire channel, the guide wire channel, and the water-injection and gas-injection channel each comprise an oval beveled cut on the beveled cut.
8. The biliary tract photography catheter system according to any one of claims 3-7, wherein the lens module comprises a lens, an image sensor and a PCBA board, a plurality of LED lamp beads are uniformly distributed on the circumference of the lens, and the lens module and the LED lamp beads are respectively electrically connected with the transmission cable;
the transmission cable is connected with a host, an image processor is arranged in the host, and the host is connected with a high-definition video display.
9. The biliary tract photography catheter system according to any one of claims 3-7, wherein the camera housing has a diameter of 2.3mm or less, the transmission cable has a diameter of 0.6mm or less, and the insertion catheter has a diameter of 2.8mm or less.
10. A method of using a biliary tract photography catheter system, comprising the steps of:
carrying out pancreaticocholangiography to keep the guide wire;
inserting the camera, the connecting assembly and the insertion catheter into the target bile duct through threading of the guide wire;
the rotating drawing direction adjusting rod can change the angle of the camera to examine the focus.
CN202210655880.0A 2022-06-10 2022-06-10 Biliary tract photography catheter system and use method Pending CN115040063A (en)

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