CN108542340B - Nested ureteral soft lens - Google Patents
Nested ureteral soft lens Download PDFInfo
- Publication number
- CN108542340B CN108542340B CN201810372426.8A CN201810372426A CN108542340B CN 108542340 B CN108542340 B CN 108542340B CN 201810372426 A CN201810372426 A CN 201810372426A CN 108542340 B CN108542340 B CN 108542340B
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- China
- Prior art keywords
- optical fiber
- handle
- sheath tube
- bendable sheath
- steel wire
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 239000013307 optical fiber Substances 0.000 claims abstract description 57
- 238000005452 bending Methods 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000005286 illumination Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000835 fiber Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 210000003734 kidney Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000000626 ureter Anatomy 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- A61B1/307—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 urinary organs, e.g. urethroscopes, cystoscopes
-
- 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
- A61B1/00064—Constructional details of the endoscope body
-
- 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
- A61B1/00131—Accessories for 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
- A61B1/005—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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
-
- 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
-
- 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
-
- 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
- A61B1/07—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 using light-conductive means, e.g. optical fibres
Abstract
The invention relates to a nested ureteroscope, which comprises a rod-shaped optical fiber lens provided with a long fiber-shaped image transmission lens body, a tubular handheld handle and a bendable sheath tube which are mutually communicated, wherein an image transmission optical fiber is arranged in the lens body, a driving steel wire for controlling the bending amplitude of the bendable sheath tube is arranged in the bendable sheath tube in a penetrating manner, a windowing chute is arranged on the outer wall surface of the handheld handle along the length direction of the handheld handle, a bending pushing handle is arranged on the windowing chute in a sliding manner, the bending pushing handle is connected to the proximal end of the driving steel wire, and the distal end of the driving steel wire is fixed with the side wall of the bendable sheath tube; the optical fiber mirror is inserted into the handheld handle through the optical fiber mirror jack at the tubular tail end of the handheld handle, and the mirror body is inserted into the bendable sheath tube. The invention has the advantages of simple structure, low cost and convenient operation, does not need to use extra sheath products, and can be applied to various operations applicable to ureteroscope and ureteroscope soft lens.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a nested ureteroscope.
Background
The ureteral soft lens in the current market is an independently usable medical instrument product, and has high use and maintenance cost due to the fact that the lens body is small in diameter, complex in structure and high in technical threshold of processing and manufacturing; in addition, the ureteral soft lens in the prior art usually needs to be matched with a ureteral soft lens sheath when in use, and the ureteral soft lens sheath is thick, so that a ureteral stent is often required to be placed in a patient ureter for ureteral dilatation before operation. In summary, the existing ureteroscope technology has a plurality of defects.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and solve the problems of inconvenient use, complex operation and complex operation procedure of the traditional ureteral endoscope.
In order to achieve the above purpose, the invention provides a nested ureteral soft lens, which comprises a rod-shaped optical fiber lens provided with a long fiber-shaped image transmission lens body, a tubular handheld handle and a bendable sheath tube which are mutually communicated, wherein an image transmission optical fiber is arranged in the lens body, a driving steel wire for controlling the bending amplitude of the bendable sheath tube is arranged in the bendable sheath tube in a penetrating manner, a windowing chute is arranged on the outer wall surface of the handheld handle along the length direction of the handheld handle, a bending pushing handle is arranged on the windowing chute in a sliding manner, the bending pushing handle is connected to the proximal end of the driving steel wire, and the distal end of the driving steel wire is fixed with the side wall of the bendable sheath tube; the optical fiber mirror is inserted into the handheld handle through the optical fiber mirror jack at the tubular tail end of the handheld handle, and the mirror body is inserted into the bendable sheath tube.
The drive wire has a proximal end and a distal end, the distal end being the end facing the insertion direction and the proximal end being the end facing the withdrawal direction.
The optical fiber mirror is provided with an endoscope head interface which is coupled with an image transmission optical fiber in the mirror body and is used for outputting images to peripheral display equipment.
The drive wire is generally referred to as a wire that provides a bending drive for the bendable sheath.
Preferably, the windowing sliding chute is in a blind groove form, one end of the windowing sliding chute, which faces the bendable sheath tube, is provided with a steel wire hole for connecting a driving steel wire, and the steel wire hole extends into a bendable sheath tube side wall entity; the bottom of the windowing chute is provided with a friction surface; the bottom of the bending pushing handle is also provided with an elastic friction bump which is propped against the friction surface.
The wire holes are generally not in communication with the outer or inner wall space in the bendable sheath sidewall entity and the hand-held handle sidewall entity, thereby avoiding the ingress and egress of extraneous gases or liquids from the wire holes.
Preferably, a limit convex strip for limiting the bending pushing handle from falling off is arranged at the edge of the windowing sliding groove.
The section of the neck of the pushing handle used for connecting the elastic friction lug on the bending pushing handle is matched with the space formed between the limiting convex strips on the windowing sliding groove, and the elastic friction lug or the entity attached to the elastic friction lug is larger than the width of the space formed between the limiting convex strips, so that the functions of limiting the whole bending pushing handle to be separated and preventing the elastic friction lug from being separated from the windowing sliding groove space are realized.
Preferably, the elastic friction bump is a strip-shaped protrusion, and the length direction of the strip-shaped protrusion is perpendicular to the length direction of the handheld handle; the friction surface is provided with a plurality of strip-shaped grooves which are used for accommodating the elastic friction convex blocks and are distributed along the length direction of the handheld handle.
The volume of the strip-shaped groove is matched with that of the strip-shaped protrusion, and the length direction of the strip-shaped groove is the same as that of the strip-shaped protrusion. The strip-shaped grooves are generally uniformly distributed in the length direction of the handle.
Preferably, the optical fiber mirror is also provided with a limit groove extending along the length direction; the wall of the hand-held handle is provided with a threaded through hole; the hand-held handle and the optical fiber mirror are mutually fixed by penetrating the bolt through the threaded through hole and propping against the limiting groove.
The head of the bolt is exposed out of the hand-held handle, so that the operator can conveniently operate the bolt in a tightening or loosening manner.
Preferably, the wall of the hand-held handle is also provided with a water injection hole communicated with the inner cavity of the bendable sheath tube; the hand-held handle is also provided with a sealing ring which is in watertight fit with the outer wall surface of the fiberscope on the inner wall.
The water injection hole communicated with the inner cavity of the bendable sheath tube is generally realized by directly punching through the wall of the handle, so that the inner cavity of the handle is communicated, and liquid can be guided to the inner cavity of the bendable sheath tube.
Preferably, a working channel is further arranged in the lens body along the length direction, and the working channel is communicated with an instrument inserting port formed in the fiber optic lens.
Preferably, the optical fiber mirror is further provided with a light source interface, and the light source interface is coupled with an illumination optical fiber wrapped on the image transmission optical fiber.
The stretching and loosening control of the driving steel wire is realized through the sliding formed between the bending pushing handle and the windowing sliding chute; when the bending pushing handle is pushed to slide in the windowing sliding groove, the distal end of the bendable sheath tube can form 0-120 DEG bending under the traction of the driving steel wire.
The damping formed between the elastic friction convex blocks and the friction surface enables the bending pushing handle to stay at any windowing chute position, so that the distal end of the bendable sheath tube can stay at any bending angle.
The limiting convex strips provide pressure for the elastic friction convex blocks on one hand, and prevent the bending pushing handle from falling out of the window opening chute area on the other hand.
The strip grooves are matched with the strip protrusions, so that the stay stability of the bending pushing handle is further realized.
The limit groove, the threaded through hole and the bolt are matched and used for locking the relative position between the optical fiber mirror and the handheld handle.
The water injection hole is used for injecting water into the bendable sheath tube to play roles of cleaning, lubrication and the like. The sealing ring can prevent leakage in the nesting gap between the handle and the optical fiber mirror when water is injected into the bendable sheath tube through the water injection hole.
The instrument insertion port is used for inserting peripheral surgical instruments such as laser fibers and the like.
The illumination fiber is used to direct light to the end of the mirror.
The optical fiber mirror and the bendable sheath structure are in nested combination, and can be inserted into the ureter without using other sheath products. The application method is as follows: firstly, the lens body at the distal end of the lens body is taken in the bendable sheath tube, the bolt is screwed, the optical fiber lens and the bendable sheath tube are relatively fixed, the nested ureteral soft lens is inserted into the bladder of a patient through an insertion channel of the conventional cystoscope, the bolt is unscrewed, the distal end of the lens body is adjusted to slightly extend out of the distal end of the bendable sheath tube, an image transmission optical fiber in the lens body is exposed, the bolt is screwed again, a ureteral opening in the bladder is found under real-time monitoring, and the nested ureteral soft lens is pushed by light kneading. If necessary, water can be injected into the bendable sheath tube through the water injection hole, water flows through a gap between the endoscope body and the bendable sheath tube and flows out through the tail end of the bendable sheath tube, so that the endoscope is used for ensuring clear vision, and when the endoscope body enters the kidney, the bending angle of the bendable sheath tube can be controlled by adjusting the bending pushing handle, so that the distal end of the endoscope body enters each kidney, and necessary operation is performed.
The invention has the advantages of simple structure, low cost and convenient operation, does not need to use extra sheath products, and can be applied to various operations applicable to ureteroscope and ureteroscope soft lens.
Drawings
Fig. 1 is an isometric assembly schematic diagram of a nested ureteral soft lens of the present invention;
fig. 2 is an assembled front schematic view of the nested ureteral soft lens of the present invention;
FIG. 3 is a schematic perspective view of a bending push handle of the present invention;
FIG. 4 is a schematic front view of a bending push handle of the present invention;
FIG. 5 is a schematic side view of a bending push handle of the present invention;
FIG. 6 is a schematic view of the connection of the bending push handle and the drive wire of the present invention;
FIG. 7 is a front view of the flexible outer sheath of the present invention;
FIG. 8 is a schematic view in section A-A of FIG. 7;
FIG. 9 is a partial schematic view of the portion G of FIG. 8;
FIG. 10 is a front schematic view of the flexible sheath of the present invention in a stretched condition with the drive wire;
FIG. 11 is a schematic side view of the flexible sheath of the present invention in a stretched condition with the drive wire;
FIG. 12 is a schematic side view of the flexible sheath of the present invention in tension with the drive wire;
FIG. 13 is a schematic cross-sectional view of F-F of FIG. 11;
FIG. 14 is an overall front view of the fiberscope of the present invention;
FIG. 15 is a schematic view in section B-B of FIG. 14;
FIG. 16 is a schematic view in section C-C of FIG. 14;
fig. 17 is a schematic perspective view of a nested ureteroscope of the present invention;
FIG. 18 is a partial schematic view of the portion H of FIG. 17;
fig. 19 is a bottom view of the nested ureteroscope of the present invention;
FIG. 20 is a schematic view of a conventional cystoscope;
FIG. 21 is a schematic view of a nested ureteroscope in accordance with the present invention in combination with a conventional cystoscope;
FIG. 22 is an elevation view of a conventional cystoscope;
FIG. 23 is a schematic cross-sectional E-E of FIG. 22;
wherein:
1-flexible sheath 1.1-fenestration chute 1.1.1-friction surface
1.2-bending push handle 1.2.1-push handle neck 1.2.2-arc slide block
1.2.3-elastic friction bump 1.2.4-drive wire 1.3-bendable sheath
1.3.1-Steel wire hole 1.4-Water injection hole 1.5-threaded through hole
1.6-fiber optic jack 1.6.1-sealing ring 2-fiber optic
2.1-mirror 2.1.1-image transmission optical fiber 2.1.2-illumination optical fiber
2.1.3 working channel 2.2-bolt 2.3 light source interface
2.4-endoscope head interface 2.5-instrument insertion port 2.6-limit groove
3-conventional cystoscope 3.1-insertion channel
Detailed Description
The invention is further described below with reference to the drawings and specific examples.
According to the nested ureteral soft lens shown in fig. 1 to 23, the nested ureteral soft lens comprises a rod-shaped optical fiber lens 2 provided with a long fiber-shaped image transmission lens body 2.1, a tubular handheld handle and a bendable sheath tube 1.3 which are mutually communicated, wherein an image transmission optical fiber 2.1.1 is arranged in the lens body 2.1, a driving steel wire 1.2.4 for controlling the bending amplitude of the bendable sheath tube 1.3 is penetrated in the bendable sheath tube 1.3, a windowing chute 1.1 is arranged on the outer wall surface of the handheld handle along the length direction of the handheld handle, a bending pushing handle 1.2 is arranged on the windowing chute 1.1 in a sliding manner, the bending pushing handle 1.2 is connected to the proximal end of the driving steel wire 1.2.4, and the distal end of the driving steel wire 1.2.4 is fixed with the side wall of the bendable sheath tube 1.3; the fiberscope 2 is inserted into the handle through a fiberscope jack 1.6 at the tubular end of the handle, and the scope body 2.1 is inserted into a bendable sheath tube 1.3. The windowing sliding chute 1.1 is in a blind groove form, one end of the windowing sliding chute 1.1, which faces the bendable sheath tube 1.3, is provided with a steel wire hole 1.3.1 for connecting a driving steel wire 1.2.4, and the steel wire hole 1.3.1 extends into a side wall entity of the bendable sheath tube 1.3; the bottom of the windowing chute 1.1 is provided with a friction surface 1.1.1; the bottom of the bending pushing handle 1.2 is also provided with an elastic friction bump 1.2.3 propped against the friction surface 1.1.1. And a limit convex strip for limiting the bending pushing handle 1.2 from falling off is arranged at the edge of the windowing chute 1.1. The elastic friction bump 1.2.3 is a strip-shaped protrusion, and the length direction of the strip-shaped protrusion is perpendicular to the length direction of the hand-held handle; the friction surface 1.1.1 is provided with a plurality of strip-shaped grooves for accommodating the elastic friction convex blocks 1.2.3 along the length direction of the hand-held handle. The optical fiber mirror 2 is also provided with a limit groove 2.6 extending along the length direction; the wall of the hand-held handle is provided with a threaded through hole 1.5; the hand-held handle and the optical fiber mirror 2 are mutually fixed by penetrating the bolt 2.2 through the threaded through hole 1.5 and propping against the limiting groove 2.6. The wall of the hand handle is also provided with a water injection hole 1.4 communicated with the inner cavity of the bendable sheath tube 1.3; the inner wall of the handheld handle is also provided with a sealing ring 1.6.1 which is in watertight fit with the outer wall surface of the fiberscope 2. The endoscope body is also internally provided with a working channel 2.1.3 along the length direction, and the working channel 2.1.3 is communicated with an instrument inserting port 2.5 arranged on the optical fiber endoscope 2. The optical fiber mirror 2 is also provided with a light source interface 2.3, and the light source interface 2.3 is coupled with an illumination optical fiber 2.1.2 wrapped on the image transmission optical fiber 2.1.1.
From another perspective, the present embodiment may be described as a nested ureteroscope, which is composed of a flexible sheath 1, a fiberscope 2, and two parts, where the flexible sheath 1 is provided with: 1.1 of a window chute, 1.1.1 of a hand-held handle, 1.2 of a bending pushing handle, 1.2.3 of an elastic friction lug, 1.2.4 of a driving steel wire, 1.3 of a bendable sheath tube, 1.3.1 of a steel wire hole, 1.4 of a water injection hole, 1.5 of a threaded through hole, 1.6 of a fiber optic lens jack and 1.6.1 of a sealing ring; the optical fiber mirror 2 is provided with: 2.1 parts of lens body, 2.1.1 parts of image transmission optical fiber, 2.1.2 parts of illumination optical fiber, 2.1.3 parts of working channel, 2.2 parts of bolt, 2.3 parts of light source interface, 2.4 parts of endoscope head interface, 2.5 parts of instrument inserting port and 2.6 parts of limit groove.
The proximal end of the bendable sheath 1 is a handheld handle, and the bendable sheath tube 1.3 at the distal end is fixedly connected with the handheld handle and the inner cavity is communicated. The window opening chute 1.1 can accommodate the sliding of the bending pushing handle 1.2, the neck part 1.2.1 of the pushing handle can be matched with the window opening chute 1.1, the arc-shaped sliding block 1.2.2 can be matched with the friction surface 1.1.1, one end of the bending pushing handle 1.2 is connected with a driving steel wire 1.2.4, the driving steel wire 1.2.4 is penetrated in a steel wire hole 1.3.1 in the bendable sheath tube 1.3, and the far end of the driving steel wire 1.2.4 is fixedly connected with the wall of the bendable sheath tube 1.3; when the bending pushing handle 1.2 is slid, under the traction of the driving steel wire 1.2.4, the distal end of the bendable sheath tube 1.3 can be bent by 0-120 degrees, the lower part of the bending pushing handle 1.2 is also provided with an elastic friction lug 1.2.3, the elastic friction lug 1.2.3 can be matched with a friction surface 1.1.1 in the windowing chute 1.1, so that the strip-shaped protrusion on the elastic friction lug 1.2.3 can stay in any strip-shaped groove, and the distal end of the bendable sheath tube 1.3 can stay at any bending angle; the water injection hole 1.4 is communicated with the inside of the bendable sheath 1 and is used for injecting water into the bendable sheath tube 1.3. The threaded through hole 1.5 is used for being matched with the bolt 2.2, the bolt 2.2 can be fastened with the limit groove 2.6 and is used for locking the relative position between the optical fiber mirror 2 and the bendable sheath 1; the optical fiber mirror jack 1.6 is used for inserting the optical fiber mirror 2 into the bendable sheath 1 from the optical fiber mirror jack, the outer surface of the proximal end of the optical fiber mirror 2 can be in watertight fit with the sealing ring 1.6.1 arranged in the optical fiber mirror jack 1.6, and leakage does not occur when water is injected into the bendable sheath tube 1.3 through the water injection hole 1.4; the light source interface 2.3 is coupled with the illumination optical fiber 2.1.2 on the lens body 2.1 and is used for guiding light to the tail end of the lens body 2.1, the endoscope head interface 2.4 is coupled with the image transmission optical fiber 2.1.1 in the lens body and is used for outputting images to peripheral display equipment, the lens body 2.1 is internally provided with a working channel 2.1.3, and the working channel 2.1.3 is in through connection with the instrument inserting port 2.5 and is used for inserting peripheral surgical instruments such as laser optical fibers and the like.
The optical fiber mirror 2 and the bendable sheath 1 are used in a combined mode, and can be inserted into a ureter without using other sheath products, and the using method is as follows: firstly, the far end of the endoscope body 2.1 is retracted into the bendable sheath tube 1.3, the fixing bolt 2.2 is screwed, so that the optical fiber endoscope 2 and the bendable sheath tube 1 are relatively fixed, the flexible ureteroscope is inserted into the bladder of a patient through the insertion channel 3.1 of the conventional cystoscope 3, then the fixing bolt 2.2 is unscrewed, the far end of the endoscope body 2.1 is adjusted to slightly extend out of the tail end of the bendable sheath tube 1.3, the image transmission optical fiber 2.1.1 is exposed, the fixing bolt 2.2 is screwed again, an ureteral opening in the bladder is found under real-time monitoring, the combined flexible ureteroscope is slightly rubbed, water can be injected into the bendable sheath tube 1.3 through the water injection hole 1.4 if needed, flows out of the tail end of the bendable sheath tube 1.3 through the gap between the endoscope body 2.1 and the bendable sheath tube 1.3, so that the endoscope vision is ensured to be clear, and when the endoscope body 2.1 enters into the kidney, the bending angle of the tail end of the bendable sheath tube 1.3 can be controlled through adjusting the bending handle 1.2, so that the operation of each push-button body 2.1 can be carried out to the tail end of the endoscope.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments described, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (4)
1. The nested ureteral soft endoscope comprises a rod-shaped optical fiber endoscope (2) provided with a long-fiber-shaped image transmission lens body (2.1), a tubular handheld handle and a bendable sheath tube (1.3) which are mutually communicated, wherein an image transmission optical fiber (2.1.1) is arranged in the lens body (2.1), a driving steel wire (1.2.4) for controlling the bending amplitude of the bendable sheath tube (1.3) is arranged in the bendable sheath tube (1.3) in a penetrating manner, and the endoscope is characterized in that a windowing chute (1.1) is arranged on the outer wall surface of the handheld handle along the length direction of the handheld handle, the windowing chute (1.1) slides upwards to form a bending push handle (1.2), the bending push handle (1.2) is connected to the proximal end of the driving steel wire (1.2.4), and the distal end of the driving steel wire (1.2.4) is fixed with the side wall of the bendable sheath tube (1.3); the optical fiber mirror (2) is inserted into the handheld handle through an optical fiber mirror jack (1.6) at the tubular tail end of the handheld handle, and the mirror body (2.1) is inserted into the bendable sheath tube (1.3);
the window sliding chute (1.1) is in a blind groove form, one end of the window sliding chute (1.1) facing the bendable sheath tube (1.3) is provided with a steel wire hole (1.3.1) for connecting a driving steel wire (1.2.4), and the steel wire hole (1.3.1) extends into a side wall entity of the bendable sheath tube (1.3); the bottom of the windowing chute (1.1) is provided with a friction surface (1.1.1); the bottom of the bending pushing handle (1.2) is also provided with an elastic friction bump (1.2.3) propped against the friction surface (1.1.1);
a limit raised line for limiting the bending pushing handle (1.2) from falling off is arranged at the edge of the windowing sliding groove (1.1); the section of the neck of the pushing handle used for connecting the elastic friction lug on the bending pushing handle is matched with the space formed between the limiting convex strips on the windowing sliding groove, and the elastic friction lug or the entity attached to the elastic friction lug is larger than the width of the space formed between the limiting convex strips, so that the functions of limiting the whole bending pushing handle to be separated and preventing the elastic friction lug from being separated from the windowing sliding groove space are realized;
the elastic friction convex blocks (1.2.3) are strip-shaped protrusions, and the length direction of the strip-shaped protrusions is perpendicular to the length direction of the handheld handle; a plurality of strip-shaped grooves for accommodating the elastic friction convex blocks (1.2.3) are arranged on the friction surface (1.1.1) along the length direction of the handheld handle; the volume of the strip-shaped groove is matched with that of the strip-shaped protrusion, and the length direction of the strip-shaped groove is in the same direction as that of the strip-shaped protrusion;
a limiting groove (2.6) extending along the length direction of the optical fiber mirror (2) is also arranged on the optical fiber mirror; the wall of the hand-held handle is provided with a threaded through hole (1.5); the hand-held handle and the optical fiber mirror (2) are mutually fixed by penetrating the bolt (2.2) through the threaded through hole (1.5) and propping against the limiting groove (2.6).
2. The nested ureteroscope according to claim 1, characterized in that the wall of the handle is also provided with a water injection hole (1.4) communicated with the inner cavity of the bendable sheath tube (1.3); the inner wall of the hand-held handle is also provided with a sealing ring (1.6.1) which is in watertight fit with the outer wall surface of the optical fiber mirror (2).
3. The nested ureteroscope according to claim 1, characterized in that a working channel (2.1.3) is further arranged in the lens body along the length direction, and the working channel (2.1.3) is communicated with an instrument insertion port (2.5) formed in the optical fiber lens (2).
4. The nested ureteroscope according to claim 1, characterized in that the optical fiber mirror (2) is further provided with a light source interface (2.3), and the light source interface (2.3) is coupled with an illumination optical fiber (2.1.2) wrapped on an image transmission optical fiber (2.1.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110063706A (en) * | 2019-05-06 | 2019-07-30 | 刘奇为 | Superfine fibre mirror system and its application method with guide function |
| CN110338856B (en) * | 2019-07-16 | 2020-05-15 | 巨翊科技（上海）有限公司 | Sheath tube steering device for operation |
| CN111991674B (en) * | 2020-09-26 | 2024-03-26 | 龙德勇 | Ablation device and method for fat-thickness obstructive cardiomyopathy |
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| CN108542340A (en) | 2018-09-18 |
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