CN112138266B - Cervical balloon dilatation catheter with visual control function - Google Patents

Cervical balloon dilatation catheter with visual control function Download PDF

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Publication number
CN112138266B
CN112138266B CN202010916595.0A CN202010916595A CN112138266B CN 112138266 B CN112138266 B CN 112138266B CN 202010916595 A CN202010916595 A CN 202010916595A CN 112138266 B CN112138266 B CN 112138266B
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cavity
wire
catheter
traction
control
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CN112138266A (en
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杜兰平
李启鹏
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Weihai Strongmedical Sci Tech Co ltd
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Weihai Strongmedical Sci Tech Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1011—Multiple balloon catheters
    • 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
    • A61B1/045—Control thereof
    • 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
    • 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
    • A61B1/303—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 vagina, i.e. vaginoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A61B17/4241—Instruments for manoeuvring or retracting the uterus, e.g. during laparoscopic surgery
    • 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
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A61B2017/4216—Operations on uterus, e.g. endometrium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A61B2017/4216—Operations on uterus, e.g. endometrium
    • A61B2017/4225—Cervix uteri
    • 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
    • A61M25/1011—Multiple balloon catheters
    • A61M2025/1013—Multiple balloon catheters with concentrically mounted balloons, e.g. being independently inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/14—Female reproductive, genital organs
    • A61M2210/1433—Uterus
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/14—Female reproductive, genital organs
    • A61M2210/1475—Vagina

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Abstract

A cervical balloon dilatation catheter with a visual control function relates to the field of medical instruments, and is characterized in that a uterine balloon and a vaginal balloon are respectively arranged at the front part of a three-cavity catheter; the front end of the three-cavity catheter is provided with an observation cover cap, a control lead and a traction wire are arranged in a visual control cavity, the control lead can freely rotate around the axis of the control lead and extend into the observation cavity, the front end of the control lead is provided with a camera, a reset pressure spring is arranged between the camera and a sealing and blocking piece, a thrust bearing is arranged on the control lead between the rear end of the reset pressure spring and the sealing and blocking piece, the traction wire can extend into the observation cavity in a front-back sliding manner, and the front end of the traction wire is connected with the camera and used for obliquely drawing the camera backwards; the back end of the three-cavity catheter is provided with a rotary connecting seat, the rotary connecting seat is rotatably provided with a rotary seat, and the rotary seat is internally provided with a rotary wheel connected with a traction wire.

Description

Cervical balloon dilatation catheter with visual control function
Technical Field
The invention relates to the field of medical instruments, in particular to a cervical balloon dilatation catheter which can observe the cervical maturity of a puerpera, accurately judge the production time, observe the state of a fetus in the uterus at multiple angles, assist in adjusting the fetal position and enable the production to be smoother and has a visual control function.
Background
It is known that some women need to use auxiliary medical means to promote cervical ripening before parturition due to poor cervical ripening, the cervical balloon dilatation catheter is a medical instrument which is commonly used in clinic to promote cervical ripening, the existing cervical balloon dilatation catheter comprises a double-cavity catheter, the double cavities of the double-cavity catheter are a uterine water cavity and a vaginal water cavity respectively, the front part of the double-cavity catheter is provided with the uterine balloon and the vaginal balloon respectively, the uterine water cavity is communicated with the uterine balloon, the vaginal water cavity is communicated with the vaginal balloon, the rear part of the double-cavity catheter is provided with a uterine water injection pipe communicated with the uterine water cavity and a vaginal water injection pipe communicated with the vaginal water cavity respectively, and the uterine water injection pipe and the vaginal water injection pipe are provided with a uterine water injection valve and a vaginal water injection valve respectively. When in use, water is injected into the uterine sacculus through the uterine water injection valve, the uterine water injection pipe and the uterine water cavity, water is injected into the vaginal sacculus through the vaginal water injection valve, the vaginal water injection pipe and the vaginal water cavity, the sacculus is expanded by the injected physiological saline, and the cervical ripening is promoted by a physical compression method.
The existing cervical balloon dilatation catheter is completely dependent on the clinical experience of doctors in the whole clinical use process (uterus placement, balloon water injection and cervical dilatation), the problems that the catheter cannot be placed in place, the water injection amount is insufficient or excessive, the judgment on the cervical maturity is inaccurate, the catheter is not taken out before maturity and the like frequently occur in the operation process, and great inconvenience is caused to the puerpera and the doctors.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the cervical balloon dilatation catheter which can observe the cervical maturity of a puerpera, accurately control the water injection amount and judge the production time, is simple and convenient to operate and has a visual control function.
The invention also aims to observe the state of the fetus in the uterus at multiple angles in the process of promoting the cervical ripening, and assist in adjusting the fetal position, so that the cervical balloon dilatation catheter with the visual control function can be produced more smoothly.
The technical scheme adopted by the invention for solving the defects of the prior art is as follows:
a cervix balloon dilatation catheter with a visual control function is characterized by being provided with a three-cavity catheter, wherein three cavities of the three-cavity catheter are respectively a uterine water cavity, a vaginal water cavity and a visual control cavity; the front end of the three-cavity catheter is provided with a sealing piece which seals the front ends of the uterine water cavity, the vaginal water cavity and the visual control cavity, the front end of the three-cavity catheter is provided with an observation cover cap, the observation cover cap and the sealing piece enclose a control observation cavity, a control lead and a traction line are arranged in the visual control cavity, the center of the sealing piece is provided with a lead sliding hole, the sealing piece on one side of the lead sliding hole is provided with a circular arc traction slideway, and the lead sliding hole and the traction slideway are communicated with the visual control cavity and the control observation cavity; the control wire can freely rotate around the axis of the control wire through the wire sliding hole and extends into the observation cavity, the front end of the control wire is provided with a camera, a reset pressure spring sleeved on the control wire is arranged on the control wire between the camera and the blocking piece, a thrust bearing is arranged on the control wire between the rear end of the reset pressure spring and the blocking piece, and the control wire is connected with a shaft piece of the thrust bearing; the traction wire can slide back and forth and freely slide along the traction slideway to extend into the observation cavity, and the front end of the traction wire is connected with the camera and is used for obliquely drawing the camera backwards; the rear end of the three-cavity conduit is provided with a rotary connecting seat, the rotary connecting seat is rotatably provided with a rotary seat, the rotary seat is internally provided with an installation cavity with an opening at the front side, a rotating shaft vertical to the axis of the three-cavity conduit is arranged in the installation cavity, a traction sleeve capable of freely rotating is arranged on the rotating shaft, a rotating wheel is arranged at the upper part of the traction sleeve, rotating notches matched with the rotating wheel are arranged on two sides of the rotary seat, two sides of the rotating wheel protrude out of the rotating notches, a friction disc is arranged at the lower end part of the traction sleeve, a friction brake disc matched with the friction disc and capable of sliding up and down and incapable of rotating is arranged on the rotating shaft on the lower side of the friction disc, and a pressurizing spring is arranged between the lower side surface of the friction brake disc and the inner wall of the rotary seat; the rotary connecting seat is provided with a traction sliding hole and a wire connecting sliding hole, the side wall of the rotary seat is provided with a control wire leading-out hole, the rear end of the traction wire penetrates through the traction sliding hole and is fixedly connected with the traction sleeve, the control wire enters the installation cavity through the wire connecting sliding hole and is led out of the rotary seat through the control wire leading-out hole, the control wire can rotate in the wire connecting sliding hole, and the rear end of the control wire outside the rotary seat is provided with a data wire connector.
The structure of the three-cavity catheter is as follows: the device is provided with an outer pipe and an inner pipe which are coaxially arranged, and two supporting spacers are arranged between the outer pipe and the inner pipe; the two supporting spacers support and fix the outer pipe and the inner pipe, so that the axes of the outer pipe and the inner pipe are superposed, and the space between the outer pipe and the inner pipe is divided into two chambers. The cavity of the inner tube is a visual control cavity, and the two cavities separated by the two supporting spacers between the outer tube and the inner tube are a uterine water cavity and a vaginal water cavity.
The front end of the observation cover cap is hemispherical. The angle adjustment of the camera is convenient, the visual field is clearer, and the visual angle is large.
The outer side of the control lead is wrapped with a wire pipe. The control wire is more beneficial to forward transmission of the torque force at the rear part.
The rotary connecting seat in the invention is: the three-cavity catheter connecting device is provided with a connecting seat plate, the front side face of the connecting seat plate is connected with the rear end of a three-cavity catheter, a circular rotating connecting groove is formed in the rear side face of the connecting seat plate, an annular connecting clamping groove is formed in the front portion of the side wall of the rotating connecting groove, and the diameter of the connecting clamping groove is larger than that of the rotating connecting groove. The front end of the rotary seat is provided with an insertion section matched with the rotary connecting groove, and the front end of the insertion section is provided with a clamping convex ring matched with the connecting clamping groove; the external diameter of inserted section is not more than the diameter of rotating the spread groove, and the external diameter of block bulge loop is greater than the diameter of rotating the spread groove, is not more than the diameter of connecting the draw-in groove. The front side of the clamping convex ring is provided with an insertion guide inclined plane or an insertion guide arc surface, when the clamping convex ring extrudes in the rotating connecting groove through external force, the clamping convex ring enters the connecting groove from the rotating connecting groove after being elastically deformed under the extrusion force between the insertion guide inclined plane or the insertion guide arc surface and the rotating connecting groove, and the rotating base and the rotating connecting base can be mutually rotatably connected.
The rotary connecting seat in the invention is: the three-cavity catheter is provided with a connecting seat plate, the front side surface of the connecting seat plate is connected with the rear end of the three-cavity catheter, and the rear side surface of the connecting seat plate is provided with a rotary connecting clamping groove which is in a round table shape and the diameter of the rotary connecting clamping groove gradually increases from back to front. The roating seat front end be equipped with rotate the joint bulge loop that is connected draw-in groove matched with external diameter by back to preceding grow gradually, joint bulge loop front side is equipped with and inserts the direction inclined plane or insert the direction cambered surface. Under the action of external force, the clamping convex ring can elastically deform to enter the rotary connecting clamping groove and connect the rotary seat and the rotary connecting seat in a mutually rotating manner.
A flat key is arranged between the friction brake disc and the rotating shaft, and a key groove matched with the flat key on the friction brake disc is communicated up and down. The function that the friction brake disc can slide up and down and does not rotate on the rotating shaft is realized. The pressurizing spring is a pressure spring sleeved on a rotating shaft between the lower side surface of the friction brake disc and the inner wall of the rotating seat. Under the action of the pressurizing spring, the friction brake disc axially extrudes the friction disc to enhance the friction force between the friction disc and the friction disc, and the friction force between the friction disc and the friction disc can be overcome to enable the traction sleeve to rotate only when the rotating wheel is driven to rotate by force. The opposite surfaces of the friction brake disc and the friction disc are provided with mutually matched bulges for increasing the friction force.
The opposite surfaces of the friction brake disc and the friction disc are respectively provided with triangular bulges, trapezoidal bulges or smooth bulges which are matched with each other and are arranged in an annular array by taking a point on the axis of the rotating shaft as a circle center. When no external force is applied, the triangular protrusions or the trapezoidal protrusions or the smooth protrusions on the friction brake disc are positioned between the triangular protrusions or the trapezoidal protrusions or the smooth protrusions on the friction disc, and when the friction brake disc and the friction disc rotate relatively, the protrusions on the friction brake disc and the protrusions on the friction brake disc are mutually extruded to generate axial separation pressure for the friction brake disc and the friction disc.
When the intelligent camera is used, the data wire connector is connected with image display equipment, images shot by the camera are transmitted to the image display equipment through the control wire to be displayed, when the condition that the angle of the camera is poor or images at other positions need to be observed is found, the rotating wheel is rotated in the forward direction by hands, the rotating wheel drives the traction sleeve to rotate, the traction wire is wound on the traction sleeve, the camera is pulled backwards by the traction wire, the control wire in the observation cavity is bent, the shooting position and the shooting angle of the camera are changed, and images in different areas are shot; when the rotating wheel is rotated reversely, the camera is reset under the action of the reset pressure spring, and images at different angles and positions can be observed repeatedly. Rotate the roating seat, the roating seat drives the control wire and rotates, make the control wire in the visual control intracavity rotatory around its axis, and then the control wire that drives the control and observe the intracavity rotates, it is rotatory around the axis of the control wire in the visual control intracavity to drive the camera, at this moment, the pull wire slides around the axis of the control wire in the visual control intracavity in pulling the slide, make the camera pull at the pull wire, observe under the crooked condition of the control wire in the intracavity, can wind the rotatory great angle of axis that the control wire in the visual control intracavity was wound, it is wider to observe the model, more do benefit to the doctor and control in real time to lying-in woman's production process.
The pipe placing process is carried out in a visual state, and the pipe placing position is accurate; the process of injecting the physiological saline into the uterine saccule and the vaginal saccule is carried out under the visual monitoring, the injected water quantity and time are determined according to the cervical maturity, the cervical maturity is accurately judged, and the pregnant woman can produce more smoothly. Promote the mature in-process of cervical, the position of fetus is judged to the intrauterine image that the accessible camera was shot, is unfavorable for the normal birth or can not be in the normal birth in the position of fetus, and the doctor accessible promotes lying-in woman's belly to change fetus position, changes the position of fetus in-process, can change the direction and the dynamics of palm in real time according to the position of fetus information real-time transformation of image transmission, makes the fetus change the position of fetus in the short time, more does benefit to lying-in woman production.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is a partially enlarged view of fig. 2 at a.
Fig. 4 is a partially enlarged view of fig. 2 at B.
FIG. 5 is a cross-sectional view of a three lumen catheter of the present invention.
Fig. 6 is a schematic view showing the construction of a traction sleeve, a rotating wheel and a friction disk according to the present invention.
Fig. 7 is a schematic view of the construction of a friction brake disc according to the invention.
Detailed Description
The cervical balloon dilatation catheter with the visual control function as shown in fig. 1-7 is characterized in that a three-cavity catheter is provided, three cavities of the three-cavity catheter are respectively a uterine water cavity 24, a vaginal water cavity 17 and a visual control cavity 18, and as can be seen from fig. 1, 3 and 5, the three-cavity catheter has the structure that: comprises an outer tube 3 and an inner tube 16 which are coaxially arranged, and two supporting spacers 30 are arranged between the outer tube 3 and the inner tube 16; the two support spacers 30 support and fix the outer tube 3 and the inner tube 16 so that their axes are coincident with each other, and partition the space between the outer tube 3 and the inner tube 16 into two chambers. The inner cavity of the inner tube 16 is a visual control cavity 18, and the two cavities separated by the two supporting separation sheets 30 between the outer tube 3 and the inner tube 16 are a uterine water cavity 24 and a vaginal water cavity 17 respectively. The front part of the three-cavity catheter is respectively provided with a uterine balloon 1 and a vaginal balloon 2, a uterine water cavity 24 is communicated with the uterine balloon 1 through a communication hole on the side wall of an outer tube 3, a vaginal water cavity 17 is communicated with the vaginal balloon 2 through a communication hole on the side wall of the outer tube 3, the rear part of the three-cavity catheter is respectively provided with a uterine water injection tube 5 communicated with the uterine water cavity 24 and a vaginal water injection tube 4 communicated with the vaginal water cavity 17, and the uterine water injection tube 5 and the vaginal water injection tube 4 are respectively provided with a uterine water injection valve 6 and a vaginal water injection valve 7; three chamber pipe front ends are equipped with the piece 26 of blocking, the piece 26 of blocking is with uterus water cavity, the front end in vagina water cavity and visual control chamber seals, the front end (the piece front side) of three chamber pipe is equipped with PC, TPU or the transparent observation shroud 15 of high transparent silica gel material, it observes the chamber to observe shroud 15 and blocking 26 enclosure synthetic control, can see out from the picture, the front end of observing shroud 15 is hemispherical, the angle modulation of the camera of being convenient for, the field of vision is more clear, visual angle is big. A control lead 19 and a traction wire 22 are arranged in the visual control cavity 18, a lead sliding hole is arranged in the center of the sealing piece corresponding to the visual control cavity 18, an arc-shaped traction slideway taking a point on the axis of the lead sliding hole as the center of a circle is arranged on the sealing piece on one side of the lead sliding hole (corresponding to the visual control cavity), and the lead sliding hole and the traction slideway (both) are communicated with the visual control cavity and the control observation cavity; the control wire 19 can stretch into the observation cavity around the axis by the wire slide hole in a free rotation manner, the front end of the control wire 19 in the observation cavity is provided with the camera 12 with a light source, the camera with the light source is provided with a light source (LED) around the camera, the control wire is connected with the light source and supplies power for the camera, the auxiliary camera collects images, and the shooting is clearer. A reset pressure spring 13 sleeved on the control wire is arranged on the control wire between the camera 12 and the blocking piece 26, a thrust roller bearing 25 is arranged between the rear end of the reset pressure spring 13 and the blocking piece 26, and the control wire penetrates through the thrust roller bearing 25 and is fixedly connected with a shaft piece of the thrust roller bearing 25; the traction wire 22 can slide back and forth and freely slide along the traction slideway (in the arc direction) and extend into the observation cavity, and the front end of the traction wire 22 is fixedly connected with one side of the camera 12 and is used for obliquely and backwards drawing the camera 12; three chamber pipe rear ends are equipped with swivelling joint seat, swivelling joint seat is last can be equipped with columniform roating seat 9 around three chamber pipe axis pivoted, be equipped with the open installation cavity of front end in the roating seat 9, be equipped with in the installation cavity with three chamber pipe axis vertically pivot 21, but install free rotation's on the pivot 21 and pull cover 27, it is equipped with rotation wheel 10 to pull cover 27 upper portion, the external diameter of roating seat 9 is less than the diameter of rotating wheel 10, be equipped with on the both sides of roating seat 9 and rotate wheel 10 complex rotation notch, the both sides protrusion of rotating the wheel rotates the notch, be convenient for rotate wheel 10 in the pivot with the hand drive. The lower end of the traction sleeve 27 is provided with a friction disc 28, a friction brake disc 29 which can slide up and down and can not rotate and is matched with the friction disc 28 is arranged on the rotating shaft 21 below the friction disc 28, and a pressure spring 20 is sleeved on the rotating shaft between the lower side surface of the friction brake disc 29 and the inner wall of the rotating base 9. As can be seen from fig. 2 and 4, the rotating connecting seat is: the uterine cavity connecting device is provided with a circular connecting seat plate 11, the front side surface of the connecting seat plate 11 is connected with the rear end of a three-cavity catheter, the connecting seat plate 11 seals the rear ends of a uterine cavity and a vaginal cavity, a circular rotating connecting groove is arranged on the rear side surface of the connecting seat plate 11, an annular connecting clamping groove is arranged at the front part of the side wall of the rotating connecting groove, and the diameter of the connecting clamping groove is larger than that of the rotating connecting groove; the front end of the rotary seat 9 is provided with a (circular) insertion section matched with the rotary connecting groove, and the front end of the insertion section is provided with a clamping convex ring 23 matched with the connecting clamping groove; the outer diameter of the insertion section is not larger than the diameter of the rotary connecting groove, and the outer diameter of the clamping convex ring 23 is larger than the diameter of the rotary connecting groove and not larger than the diameter of the connecting clamping groove; the front side of block bulge loop 23 is equipped with and inserts the direction cambered surface, and when block bulge loop 23 extrudeed in to rotating the spread groove through external force, the block bulge loop took place elastic deformation under the extrusion force that inserts direction cambered surface and rotate between the spread groove after and gets into the connection slot by rotating the spread groove in, but the axial fixity who rotates roating seat 9 and swivelling joint seat 11 mutual rotation is connected. The rotary connecting seat 11 is provided with a traction sliding hole and a wire connection sliding hole, the side wall of the rotary seat (mounting cavity) is provided with a control wire leading-out hole, the rear end of a traction wire 22 penetrates through the traction sliding hole to be fixedly connected with a traction sleeve between the friction disc and the rotating wheel, the traction wire can freely slide back and forth in the traction sliding hole, a control wire 19 enters the mounting cavity through the wire connection sliding hole and is led out of the rotary seat through the control wire leading-out hole, the control wire 19 can rotate (around the axis) in the wire connection sliding hole, the control wire is fixedly connected with the control wire leading-out hole, and the rear end of the control wire 19 outside the rotary seat is provided with a data wire connector 8.
The invention is further improved, the outer side of the control lead is wrapped with a wire tube; the control wire is more beneficial to forward transmission of the torque force at the rear part.
The structure of the rotary connecting seat in the invention can also be as follows: the back side of the connecting seat plate is provided with a round connecting seat plate, the front side surface of the connecting seat plate is connected with the back end of the three-cavity catheter, the connecting seat plate seals the back ends of the uterine water cavity and the vaginal water cavity, and the back side surface of the connecting seat plate is provided with a round table-shaped rotating connecting clamping groove with the diameter gradually increased from back to front. The roating seat front end be equipped with rotate the joint bulge loop that is connected draw-in groove matched with external diameter by back to preceding grow gradually, joint bulge loop front side is equipped with and inserts the direction inclined plane or insert the direction cambered surface. Under the action of external force, the clamping convex ring can elastically deform to enter the rotary connecting clamping groove and connect the rotary seat and the rotary connecting seat in a mutually rotating manner.
A flat key is arranged between the friction brake disc and the rotating shaft, and a key groove matched with the flat key on the friction brake disc is vertically communicated; the function that the friction brake disc can slide up and down and does not rotate on the rotating shaft is realized. The pressurizing spring is a pressure spring sleeved on a rotating shaft between the lower side surface of the friction brake disc and the inner wall of the rotating seat; under the action of the pressurizing spring, the friction brake disc axially extrudes the friction disc to enhance the friction force between the friction disc and the friction disc, and the friction force between the friction disc and the friction disc can be overcome to enable the traction sleeve to rotate only when the rotating wheel is driven to rotate by force; the opposite surfaces of the friction brake disc and the friction disc are provided with mutually matched bulges for increasing the friction force.
The invention is further improved, the opposite surfaces of the friction brake disc and the friction disc are respectively provided with triangular bulges, trapezoidal bulges or smooth bulges which are matched with each other and are arranged in an annular array by taking a point on the axis of the rotating shaft as a circle center. When no external force is applied, the triangular protrusions or the trapezoidal protrusions or the smooth protrusions on the friction brake disc are positioned between the triangular protrusions or the trapezoidal protrusions or the smooth protrusions on the friction disc, and when the friction brake disc and the friction disc rotate relatively, the protrusions on the friction brake disc and the protrusions on the friction brake disc are mutually extruded to generate axial separation pressure for the friction brake disc and the friction disc. The friction brake disc and the friction disc can rotate relatively only when the rotating wheel is driven to rotate by force and the pressure for generating axial separation is large enough, so that the traction wire is ensured to be controlled manually to pull the camera to move.
When the intelligent camera is used, the data wire connector is connected with image display equipment, images shot by the camera are transmitted to the image display equipment through the control wire to be displayed, when the condition that the angle of the camera is poor or images at other positions need to be observed is found, the rotating wheel is rotated in the forward direction by hands, the rotating wheel drives the traction sleeve to rotate, the traction wire is wound on the traction sleeve, the camera is pulled backwards by the traction wire, the control wire in the observation cavity is bent, the shooting position and the shooting angle of the camera are changed, and images in different areas are shot; when the rotating wheel rotates reversely, the camera resets under the action of the reset pressure spring, and images at different angles and positions can be observed repeatedly. Rotate the roating seat, the roating seat drives the control wire and rotates, make the control wire in the visual control intracavity rotatory around its axis, and then the control wire that drives the control and observe the intracavity rotates, it is rotatory around the axis of the control wire in the visual control intracavity to drive the camera, at this moment, the pull wire slides around the axis of the control wire in the visual control intracavity in pulling the slide, make the camera pull at the pull wire, observe under the crooked condition of the control wire in the intracavity, can wind the rotatory great angle of axis that the control wire in the visual control intracavity was wound, it is wider to observe the model, more do benefit to the doctor and control in real time to lying-in woman's production process.
The pipe placing process is carried out in a visual state, and the pipe placing position is accurate; the process of injecting the physiological saline into the uterine saccule and the vaginal saccule is carried out under the visual monitoring, the injected water quantity and time are determined according to the cervical maturity, the cervical maturity is accurately judged, and the pregnant woman can produce more smoothly. Promote the mature in-process of cervical, the position of fetus is judged to the intrauterine image that the accessible camera was shot, is unfavorable for the normal birth or can not be in the normal birth in the position of fetus, and the doctor accessible promotes lying-in woman's belly to change fetus position, changes the position of fetus in-process, can change the direction and the dynamics of palm in real time according to the position of fetus information real-time transformation of image transmission, makes the fetus change the position of fetus in the short time, more does benefit to lying-in woman production.

Claims (7)

1. A cervix balloon dilatation catheter with a visual control function is characterized by being provided with a three-cavity catheter, wherein three cavities of the three-cavity catheter are respectively a uterine water cavity, a vaginal water cavity and a visual control cavity; the front end of the three-cavity catheter is provided with a sealing piece which seals the front ends of the uterine water cavity, the vaginal water cavity and the visual control cavity, the front end of the three-cavity catheter is provided with an observation cover cap, the observation cover cap and the sealing piece enclose a control observation cavity, a control lead and a traction line are arranged in the visual control cavity, the center of the sealing piece is provided with a lead sliding hole, the sealing piece on one side of the lead sliding hole is provided with a circular arc traction slideway, and the lead sliding hole and the traction slideway are communicated with the visual control cavity and the control observation cavity; the control wire can freely rotate around the axis of the control wire through the wire sliding hole and extends into the observation cavity, the front end of the control wire is provided with a camera, a reset pressure spring sleeved on the control wire is arranged on the control wire between the camera and the blocking piece, a thrust bearing is arranged on the control wire between the rear end of the reset pressure spring and the blocking piece, and the control wire is connected with a shaft piece of the thrust bearing; the traction wire can slide back and forth and freely slide along the traction slideway to extend into the observation cavity, and the front end of the traction wire is connected with the camera and is used for obliquely drawing the camera backwards; the rear end of the three-cavity conduit is provided with a rotary connecting seat, the rotary connecting seat is rotatably provided with a rotary seat, an installation cavity with an opening at the front side is arranged in the rotary seat, a rotating shaft vertical to the axis of the three-cavity conduit is arranged in the installation cavity, a traction sleeve capable of rotating freely is arranged on the rotating shaft, a rotating wheel is arranged at the upper part of the traction sleeve, rotating notches matched with the rotating wheel are arranged on two sides of the rotary seat, two sides of the rotating wheel protrude out of the rotating notches, a friction disc is arranged at the lower end part of the traction sleeve, a friction brake disc which can slide up and down and cannot rotate and is matched with the friction disc is arranged on the rotating shaft on the lower side of the friction disc, and a pressurizing spring is arranged between the lower side surface of the friction brake disc and the inner wall of the rotary seat; the rotary connecting seat is provided with a traction sliding hole and a wire connecting sliding hole, the side wall of the rotary seat is provided with a control wire leading-out hole, the rear end of the traction wire passes through the traction sliding hole and is fixedly connected with the traction sleeve, the control wire enters the installation cavity through the wire connecting sliding hole and is led out of the rotary seat through the control wire leading-out hole, the control wire can rotate in the wire connecting sliding hole, and the rear end of the control wire outside the rotary seat is provided with a data wire connector; the rotary connecting seat is: the three-cavity catheter is provided with a connecting seat plate, the front side surface of the connecting seat plate is connected with the rear end of the three-cavity catheter, a circular rotating connecting groove is arranged on the rear side surface of the connecting seat plate, an annular connecting clamping groove is arranged at the front part of the side wall of the rotating connecting groove, and the diameter of the connecting clamping groove is larger than that of the rotating connecting groove; the front end of the rotary seat is provided with an insertion section matched with the rotary connecting groove, and the front end of the insertion section is provided with a clamping convex ring matched with the connecting clamping groove; the external diameter of inserted section is not more than the diameter of rotating the spread groove, and the external diameter of block bulge loop is greater than the diameter of rotating the spread groove, is not more than the diameter of connecting the draw-in groove.
2. The cervical balloon dilation catheter with visual control function according to claim 1, wherein the three-lumen catheter is structured as: the device is provided with an outer pipe and an inner pipe which are coaxially arranged, and two supporting spacers are arranged between the outer pipe and the inner pipe; the two supporting spacers support and fix the outer pipe and the inner pipe, so that the axes of the outer pipe and the inner pipe are superposed, and the space between the outer pipe and the inner pipe is divided into two chambers.
3. The cervical balloon dilation catheter with visual control of claim 1 wherein the front end of the viewing cover is hemispherical.
4. The cervical balloon dilation catheter with visual control function according to claim 1, wherein the control wire is wrapped with a wire tube.
5. The cervical balloon dilation catheter with visual control function according to claim 1, wherein said rotation connecting seat is: the three-cavity catheter is provided with a connecting seat plate, the front side surface of the connecting seat plate is connected with the rear end of the three-cavity catheter, and the rear side surface of the connecting seat plate is provided with a rotary connecting clamping groove which is in a round table shape and the diameter of the rotary connecting clamping groove gradually increases from back to front.
6. The cervical balloon dilatation catheter with visual control function as claimed in claim 1, wherein a flat key is arranged between the friction brake disc and the rotation shaft, and a key groove on the friction brake disc, which is matched with the flat key, is vertically penetrated.
7. The cervical balloon dilation catheter with visual control function according to claim 1, wherein the friction brake disc and the friction disc are provided with a triangular protrusion, a trapezoidal protrusion or a smooth protrusion on opposite surfaces thereof, the triangular protrusion, the trapezoidal protrusion or the smooth protrusion being matched with each other and being arranged in an annular array around a point on the axis of the rotating shaft.
CN202010916595.0A 2020-09-03 2020-09-03 Cervical balloon dilatation catheter with visual control function Active CN112138266B (en)

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CN115337520A (en) * 2022-08-15 2022-11-15 上海鹏冠生物医药科技有限公司 Human body cavity intervention device with end capable of arbitrarily steering
CN116616998B (en) * 2023-05-17 2024-03-29 中国人民解放军空军军医大学 Visual monitoring device for eustachian tube sacculus dilation operation

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US20060058831A1 (en) * 2004-09-13 2006-03-16 Jack Atad Inflatable system for cervical dilation and labor induction
JP2016010419A (en) * 2012-11-08 2016-01-21 テルモ株式会社 catheter
CN107349000A (en) * 2016-05-10 2017-11-17 柯惠Lp公司 Uterus raising device
US11033720B2 (en) * 2016-12-18 2021-06-15 AQUEDUCT MEDICAL Ltd. Cervical canal dilation device
CN210673991U (en) * 2019-05-17 2020-06-05 刘秋霞 Intracardiac branch of academic or vocational study sacculus pipe
CN110898315A (en) * 2019-11-29 2020-03-24 王军 Whole-course visible steering adjustable three-cavity two-sac tube

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