CN108478172B - Water-gas joint assembly of electronic endoscope - Google Patents
Water-gas joint assembly of electronic endoscope Download PDFInfo
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- CN108478172B CN108478172B CN201810291254.1A CN201810291254A CN108478172B CN 108478172 B CN108478172 B CN 108478172B CN 201810291254 A CN201810291254 A CN 201810291254A CN 108478172 B CN108478172 B CN 108478172B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 238000007789 sealing Methods 0.000 claims abstract description 65
- 238000012546 transfer Methods 0.000 claims description 25
- 210000001503 joint Anatomy 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
-
- 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
- A61B1/012—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
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Mechanical Engineering (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
The invention provides a water-gas joint assembly of an electronic endoscope, and belongs to the technical field of endoscopes. The problem that an existing water-gas joint assembly of an endoscope is inconvenient to assemble and disassemble is solved. The water-gas joint assembly of the electronic endoscope comprises a joint main body and a water bottle joint, wherein the joint main body is provided with a first waterway channel and a first pneumatic channel, the water bottle joint is provided with a second waterway channel and a second pneumatic channel, the inner end of the water-gas joint is fixedly provided with a water-gas three-way seat with an air inlet and a water outlet, the air inlet is fixedly connected with an air pipe, the water outlet is fixedly connected with a water pipe, the joint main body passes through the water-gas joint and then is in threaded connection with the water-gas three-way seat, the water outlet is communicated with the first waterway channel, the air inlet is communicated with the first pneumatic channel, and a locking structure is arranged between the joint main body and the water bottle joint. The invention has the advantages of convenient disassembly and assembly, high structural stability, good sealing performance and the like.
Description
Technical Field
The invention belongs to the technical field of endoscopes, and relates to a water-gas joint assembly of an electronic endoscope.
Background
In the using process of the endoscope, in order to acquire clearer tissue scene images or diagnosis and treatment operation images, the lens and the environment in the endoscope are required to be washed in time, so that water and air passages and devices are designed in the system. The water and air passage initial end is designed on the light guide part, when in use, the water bottle is externally connected, air is introduced into the cold light source through the internal pipeline of the light guide part, and the water and air on-off is realized through controlling the key on the operation part, so that the flushing function is completed. The water bottle device is provided with a connector which is in butt joint with the water gas port of the light guide part, and a complete water gas passage without leakage is formed by butt joint of the connector and the water gas port. In the prior art, the water-air seat and the light guide part are bonded by epoxy resin, and the assembly mode is not easy to seal, and has the risks of blocking the inner pipeline of the water-air seat by glue, so that the flow of water and air is reduced. In order to realize the sealing of the water-gas joint, a sealing ring is arranged on the tube core in the water-gas seat, and after the assembly is finished, if the assembly is problematic, the disassembly and the maintenance are inconvenient. The interface is in butt joint and is fixed through the spring ring arranged on the connector and the corresponding clamping groove in the interface, so that the requirement on the spring ring and the clamping groove is high, and the operation is not easy.
For this reason, chinese patent discloses an endoscope water vapor device with good leakproofness and endoscope equipment [ authorized bulletin number CN203656403U ], it sets up the draw-in groove in the water-jug interface pipe, sets up the snap ring with draw-in groove matched with on the water-jug hose interface, when the two are connected, the snap ring on the water-jug hose interface and the draw-in groove cooperation chucking in the water-jug interface realize the joint. The connection mode can improve the reliability and stability of connection, but the clamping ring and the clamping groove are both positioned in the connector and are not easy to operate; the snap ring is difficult to disassemble after being clamped into the clamping groove, so that the use cost is high; and the processing requirements on the clamping ring and the clamping groove are high, so that the processing cost is high.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides a water-gas joint assembly of an electronic endoscope, which is convenient to assemble and disassemble.
The aim of the invention can be achieved by the following technical scheme:
The water-gas joint assembly of the electronic endoscope comprises a joint main body arranged in a water-gas interface of a light guide part shell and a water bottle joint used for being in butt joint with the joint main body, wherein the joint main body is provided with a first water channel and a first air channel, the water bottle joint is provided with a second water channel which is opposite to the first water channel and a second air channel which is opposite to the first air channel.
The water bottle joint is in butt joint with the joint main body under the action of the locking structure, and at the moment, the first air channel is communicated with the second air channel, and the first waterway channel is communicated with the second waterway channel. The connector body is cylindrical, is in small clearance fit with the water-air interface, and the first waterway channel and the first air channel are axially arranged along the connector body. The air pipe and the water pipe are fixedly connected with the water-air three-way seat in a welding mode.
In the above-mentioned electronic endoscope's aqueous vapor connects subassembly, aqueous vapor tee bend seat be the tube-shape and its top has the roof, foretell delivery port wear to establish in the roof and delivery port and the coaxial setting of aqueous vapor tee bend seat, waterway channel one with the coaxial setting of delivery port, the inboard of roof have with the coaxial annular groove that sets up of delivery port, foretell air inlet and this annular groove intercommunication, the gas circuit channel one also with annular groove intercommunication, the inside of aqueous vapor tee bend seat is equipped with the internal thread, the outside of joint main part is equipped with the external screw thread.
During installation, the connector main body passes through the water-gas interface and then is in threaded connection with the internal threads of the water-gas three-way seat until the end part of the connector main body abuts against the inner side of the top plate, at the moment, the first waterway channel is communicated with the water outlet, and the first waterway channel is communicated with the annular groove.
In the water-gas joint assembly of the electronic endoscope, a waterproof ring I which is arranged around the waterway channel I is arranged between the inner side of the top plate and the joint main body, the outer diameter of the waterproof ring I is smaller than the inner diameter of the annular groove, and an O-shaped sealing ring is arranged between the joint main body and the water-gas three-way seat.
The waterproof ring I is used for isolating the waterway channel I from the air channel I, and the O-shaped sealing ring is used for isolating the air channel I from the internal environment of the light guide part shell. In order to prevent the waterproof ring I from falling off, an installation groove which is coaxially arranged with the water outlet is arranged on the inner side of the top plate, and the waterproof ring I is arranged in the installation groove; in order to prevent the O-shaped sealing ring from falling, an annular mounting groove is formed in the outer wall of the joint main body or the inner wall of the water-gas three-way seat, the O-shaped sealing ring is arranged in the annular mounting groove, and the annular mounting groove is preferably formed in the outer wall of the joint main body so as to facilitate the installation of the O-shaped sealing ring.
In the water-gas joint assembly of the electronic endoscope, one end of the joint main body, which is close to the water bottle joint, is provided with a concave cavity, a sealing gasket is arranged in the concave cavity, a yielding hole I which is opposite to the air path channel I and a yielding hole II which is opposite to the water path channel I are formed in the sealing gasket, the water bottle joint is propped against the sealing gasket under the action of a locking structure, and a limiting structure for limiting the sealing gasket to circumferentially rotate is arranged in the concave cavity.
In the above-mentioned aqueous vapor joint assembly of electronic endoscope, the limit structure include threaded connection in the gas circuit transfer tube of gas circuit passageway one, the other end of gas circuit transfer tube wears to establish in the hole of stepping down of sealed pad one. When the sealing gasket is installed, the air passage transfer pipe is connected into the first air passage through threads, and then the sealing gasket is sleeved on the air passage transfer pipe.
In the above-mentioned aqueous vapor joint assembly of electronic endoscope, the water-jug connect and be close to the one end that connects the main part and have and extend to the outside annular of connecting the main part and keep off the edge, locking structure include two locate connect the outside spacing post of main part, two locate on the annular keep off the edge respectively with spacing post correspond the longitudinal groove that sets up and two respectively with the transverse groove of longitudinal groove intercommunication, spacing post along connect the radial extension and the symmetric distribution of main part, two transverse groove symmetric distribution, two spacing post outer end the distance is greater than the annular and keeps off the internal diameter along. The limit posts are at least two, so that the stress balance can be ensured.
In the above-mentioned aqueous vapor joint assembly of electronic endoscope, the inner side portion of the said transverse groove has concave recess to one side of the joint main body, when the said spacing post is blocked into recess, the said gas channel two is communicated with gas channel switching tube.
When the water bottle connector is in butt joint, the longitudinal groove is aligned with the limiting column, when the limiting column reaches the bottom of the longitudinal groove, the water bottle connector is rotated to enable the limiting column to enter the transverse groove, force and circumferential force in the direction of the connector main body are applied to the water bottle connector in the process, when the limiting column enters the inner end of the transverse groove, the water bottle connector is loosened, and the limiting column is clamped into the notch under the action of elastic force of the sealing gasket.
In the above-mentioned aqueous vapor joint assembly of electronic endoscope, the thickness of sealed pad is less than the degree of depth of cavity, the front end that the water-jug connects has the axial arch that sets up with the cavity cooperation, and foretell water route passageway two and air route passageway two wear to establish on the axial arch, when spacing post card go into in the notch, the spacing of axial bellied tip to the cavity bottom is less than the biggest thickness of sealed pad. The maximum thickness of the sealing gasket is the actual thickness of the sealing gasket when no external force is applied, and because the distance from the end part of the axial bulge to the bottom of the concave cavity is smaller than the maximum thickness of the sealing gasket, the sealing gasket is stressed and compressed during butt joint, and the sealing gasket resets under the action of self elasticity after the water bottle joint is loosened, and applies axial outward force to the water bottle structure, and can effectively limit the water bottle joint to retract when the limit column is clamped into the concave cavity.
In the above-mentioned aqueous vapor joint assembly of electronic endoscope, the first gas path channel is two and is located the both sides of first water path channel respectively, every the equal threaded connection in the first gas path channel has a gas path transfer pipe. In order to facilitate the disassembly and assembly of the gas circuit transfer tube, a straight groove is arranged at one end of the gas circuit transfer tube far away from the water-gas three-way seat, and the disassembly and assembly of the gas circuit transfer tube can be realized by using a common screwdriver. Two planes which are oppositely arranged are arranged on the outer wall of the joint main body, so that the joint main body can be assembled and disassembled without using a custom tool, and the planes and the limit posts are staggered.
In the water-gas joint assembly of the electronic endoscope, a limiting step is arranged outside the joint main body, and a waterproof ring II is arranged between the limiting step and the outer end face of the water-gas joint. The waterproof ring II is used for isolating and sealing the inside of the light guide part shell and the external environment. In order to prevent the second waterproof ring from falling off, an annular mounting groove can be formed in the outer end face of the water-gas interface, and the flat-pad waterproof ring is mounted in the mounting groove.
The waterproof ring I, the waterproof ring II and the O-shaped sealing ring are made of medical silica gel which is acid and alkali resistant, high and low temperature resistant and nontoxic.
Before the water-gas joint assembly is used, the water-gas three-way seat is fixed in the light guide part shell, the joint main body is connected to the water-gas three-way seat in a threaded manner after the waterproof ring I, the waterproof ring II and the O-shaped sealing ring are respectively arranged, and then the gas circuit switching tube is glued and then is connected into the gas circuit channel I in a threaded manner, and a sealing gasket is arranged.
When the water bottle joint is assembled with the joint main body, the annular baffle is aligned with the limit posts on the joint main body along the upper left-right symmetrical longitudinal grooves, then the water bottle joint is axially close to the joint main body, the water bottle joint is rotated for a certain angle after moving to a preset position, and at the moment, the limit posts move along the transverse grooves until the limit posts are clamped into the notches, and then the limit posts are assembled in place. At the moment, the water bottle joint extrudes the sealing gasket, so that the sealing gasket is compressed and deformed, and the sealing of the waterway, the air passage and the external environment is realized.
After the water bottle joint and the interface main body are assembled, air provided by the system enters the interface main body through an air pipe, and then flows to an air passage II in the water bottle joint through an air passage switching pipe to enter the water bottle; the water in the water bottle enters the first waterway channel in the interface main body through the second waterway channel in the water bottle joint, and then enters the water pipe through the water-gas three-way seat to realize the transmission of the waterway.
Compared with the prior art, the water-gas joint assembly of the electronic endoscope has the following advantages:
The structure is reasonable in design, simple in assembly mode and good in stability; the connector body and the air passage adapter tube are convenient to detach, so that the connector body and the air passage adapter tube are convenient to maintain and replace, and the water bottle connector is convenient to detach from the connector body; the sealing is realized through the waterproof ring I, the waterproof ring II, the O-shaped sealing ring and the sealing gasket, and the sealing performance is good.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.
Fig. 2 is a cross-sectional view of a preferred embodiment provided by the present invention.
Fig. 3 is an exploded view of the joint body provided by the present invention.
Fig. 4 is an enlarged schematic view of fig. 1 at a provided by the present invention.
In the figure, 1, a shell; 2. a joint body; 3. a water bottle joint; 4. a waterway channel I; 5. the first air channel is formed; 6. a waterway channel II; 7. the second air passage is; 8. a water-gas three-way seat; 9. an air pipe; 10. a water pipe; 11. a top plate; 12. an annular groove; 13. a waterproof ring I; 14. an O-shaped sealing ring; 15.a sealing gasket; 16. yielding hole I; 17. yielding holes II; 18. a gas path transfer tube; 19. an annular blocking edge; 20. a limit column; 21. a longitudinal groove; 22. a lateral trench; 23. a notch; 24. an axial protrusion; 25. a limit step; 26. a waterproof ring II; 27. a straight slot; 28. a plane.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
The water-gas joint assembly of the electronic endoscope shown in fig. 1 comprises a joint main body 2 arranged in a water-gas interface of a light guide part shell 1 and a water bottle joint 3 used for being in butt joint with the joint main body 2, wherein the joint main body 2 is provided with a water channel I4 and an air channel I5, and the water bottle joint 3 is provided with a water channel II 6 arranged opposite to the water channel I4 and an air channel II 7 arranged opposite to the air channel I5. As shown in fig. 2, the inner end of the water-gas interface is fixed with a water-gas three-way seat 8 with an air inlet and a water outlet, as shown in fig. 3, the air inlet is fixedly connected with an air pipe 9, the water outlet is fixedly connected with a water pipe 10, the connector main body 2 passes through the water-gas interface and then is in threaded connection with the water-gas three-way seat 8, the water outlet is communicated with the first waterway channel 4, the air inlet is communicated with the first waterway channel 5, and a locking structure is arranged between the connector main body 2 and the water bottle connector 3.
Under the action of the locking structure, the water bottle joint 3 is in butt joint with the joint main body 2, at the moment, the first air passage 5 is communicated with the second air passage 7, and the first water passage 4 is communicated with the second water passage 6. The joint main body 2 is cylindrical, is in small clearance fit with the water-air interface, and the first waterway channel 4 and the first air channel 5 are arranged along the axial direction of the joint main body 2. The air pipe 9 and the water pipe 10 are fixedly connected with the water-air three-way seat 8 in a welding mode.
As shown in fig. 2, the water-gas three-way seat 8 is cylindrical and has a top plate 11 at its top end, the water outlet is disposed in the top plate 11 in a penetrating manner, and the water outlet is disposed coaxially with the water-gas three-way seat 8, the first waterway channel 4 is disposed coaxially with the water outlet, the inner side of the top plate 11 has an annular groove 12 disposed coaxially with the water outlet, the air inlet is communicated with the annular groove 12, the first air channel 5 is also communicated with the annular groove 12, the inside of the water-gas three-way seat 8 is provided with internal threads, and the outside of the joint main body 2 is provided with external threads. During installation, the connector main body 2 passes through the water-gas interface and then is in threaded connection with the internal thread of the water-gas three-way seat 8 until the end part of the connector main body 2 abuts against the inner side of the top plate 11, at the moment, the first waterway channel 4 is communicated with the water outlet, and the first waterway channel 5 is communicated with the annular groove 12.
As shown in fig. 2, a waterproof ring 13 surrounding the first waterway channel 4 is arranged between the inner side of the top plate 11 and the joint main body 2, the outer diameter of the waterproof ring 13 is smaller than the inner diameter of the annular groove 12, and an O-shaped sealing ring 14 is arranged between the joint main body 2 and the water-gas three-way seat 8. The waterproof ring I13 is used for isolating the waterway channel I4 from the air channel I5, and the O-shaped sealing ring 14 is used for isolating the air channel I5 from the internal environment of the light guide part shell 1. In order to prevent the waterproof ring I13 from falling off, an installation groove which is coaxially arranged with the water outlet is arranged on the inner side of the top plate 11, and the waterproof ring I13 is arranged in the installation groove; in order to prevent the O-ring 14 from falling off, an annular mounting groove is provided on the outer wall of the joint body 2 or the inner wall of the water-gas three-way seat 8, and the O-ring 14 is provided in the annular mounting groove, preferably the annular mounting groove is provided on the outer wall of the joint body 2, so that the O-ring 14 can be conveniently mounted.
As shown in fig. 2, one end of the connector main body 2, which is close to the water bottle connector 3, is provided with a concave cavity, a sealing pad 15 is arranged in the concave cavity, a yielding hole I16 which is opposite to the air channel I5 and a yielding hole II 17 which is opposite to the water channel I4 are arranged on the sealing pad 15, the water bottle connector 3 is abutted against the sealing pad 15 under the action of a locking structure, and a limiting structure for limiting the sealing pad 15 to rotate circumferentially is arranged in the concave cavity.
As shown in fig. 2 and 3, the limiting structure includes an air passage transfer tube 18 screwed in the air passage one 5, and the other end of the air passage transfer tube 18 is inserted into the relief hole one 16 of the sealing pad 15. When the air channel transfer tube 18 is installed, the air channel transfer tube 18 is firstly connected into the air channel I5 in a threaded mode, and then the sealing gasket 15 is sleeved on the air channel transfer tube 18, and the first abdicating hole 16 is eccentrically arranged, so that circumferential rotation of the sealing gasket 15 can be limited to a certain extent.
As shown in fig. 1, one end of the water bottle joint 3, which is close to the joint main body 2, is provided with an annular blocking edge 19 extending to the outside of the joint main body 2, as shown in fig. 4, the locking structure comprises two limiting columns 20 arranged on the outside of the joint main body 2, two longitudinal grooves 21 arranged on the annular blocking edge 19 and respectively corresponding to the limiting columns 20, and two transverse grooves 22 respectively communicated with the longitudinal grooves 21, wherein the limiting columns 20 extend along the radial direction of the joint main body 2 and are symmetrically distributed, the two transverse grooves 22 are symmetrically distributed, and the distance between the outer ends of the two limiting columns 20 is larger than the inner diameter of the annular blocking edge 19. At least two limit posts 20 can ensure the stress balance.
As shown in fig. 4, a notch 23 recessed toward the joint body 2 is provided at the inner end side of the transverse groove 22, and the second air passage 7 communicates with the air passage transfer tube 18 when the limit post 20 is snapped into the notch 23. During butt joint, the longitudinal groove 21 is aligned with the limiting column 20, when the limiting column 20 reaches the bottom of the longitudinal groove 21, the water bottle joint 3 is rotated to enable the limiting column 20 to enter the transverse groove 22, in the process, force and circumferential force in the direction of the joint main body 2 are applied to the water bottle joint 3, when the limiting column 20 enters the inner end of the transverse groove 22, the water bottle joint 3 is loosened, and the limiting column 20 is clamped into the notch 23 under the elastic force of the sealing gasket 15.
As shown in fig. 2, the thickness of the sealing pad 15 is smaller than the depth of the concave cavity, the front end of the water bottle joint 3 is provided with an axial protrusion 24 matched with the concave cavity, the second water channel 6 and the second air channel 7 are arranged on the axial protrusion 24 in a penetrating manner, and when the limiting column 20 is clamped into the notch 23, the distance from the end part of the axial protrusion 24 to the bottom of the concave cavity is smaller than the maximum thickness of the sealing pad 15. The maximum thickness of the sealing gasket 15 is the actual thickness of the sealing gasket 15 when no external force is applied, because the distance from the end part of the axial bulge 24 to the bottom of the concave cavity is smaller than the maximum thickness of the sealing gasket 15, the sealing gasket 15 is compressed under force when in butt joint, the sealing gasket 15 resets under the action of self elasticity after the water bottle joint 3 is loosened, the axially outward force is applied to the water bottle structure, and the water bottle joint 3 can be effectively limited to retract when the limiting post 20 is clamped into the concave cavity 23.
As shown in fig. 2 and 3, the first air passage 5 is two and is respectively located at two sides of the first water passage 4, and an air passage transfer tube 18 is connected in each air passage 5 in a threaded manner. In order to facilitate the disassembly and assembly of the air passage transfer tube 18, as shown in fig. 3, a straight groove 27 is provided at one end of the air passage transfer tube 18 far away from the water-gas three-way seat 8, and the disassembly and assembly of the air passage transfer tube 18 can be realized by using a common screwdriver. As shown in fig. 3, two oppositely arranged flat surfaces 28 are arranged on the outer wall of the joint main body 2, so that the joint main body can be assembled and disassembled without using a custom tool, namely using a common tool, and the flat surfaces 28 are arranged in a staggered manner with respect to the limit posts 20.
As shown in fig. 2, a limiting step 25 is arranged outside the joint main body 2, and a waterproof ring II 26 is arranged between the limiting step 25 and the outer end surface of the water-gas interface. The waterproof ring II 26 is used for isolating and sealing the inside of the light guide part shell 1 from the external environment. In order to prevent the second waterproof ring 26 from falling off, an annular mounting groove can be formed in the outer end face of the water-gas interface, and the flat gasket waterproof ring is mounted in the mounting groove.
In this embodiment, the materials of the waterproof ring one 13, the waterproof ring two 26 and the O-shaped sealing ring 14 are all medical silica gel which is acid-base resistant, high-low temperature resistant and nontoxic.
Before the water-gas joint assembly is used, the water-gas three-way seat 8 is fixed in the light guide part shell 1, the joint main body 2 is connected to the water-gas three-way seat 8 in a threaded manner after the waterproof ring I13, the waterproof ring II 26 and the O-shaped sealing ring 14 are respectively arranged, the gas circuit transfer tube 18 is connected to the gas circuit channel I5 in a threaded manner after gluing, and the sealing gasket 15 is arranged.
When the water bottle joint 3 is assembled with the joint main body 2, the annular baffle edges 19 are aligned with the left-right symmetrical longitudinal grooves 21 on the joint main body to form a limit post 20, then the water bottle joint 3 is axially close to the joint main body 2, the water bottle joint 3 is rotated for a certain angle after moving to a preset position, and at the moment, the limit post 20 moves along the transverse groove 22 until the limit post 20 is clamped into the notch 23, and then the water bottle joint is assembled in place. At this time, the water bottle joint 3 extrudes the sealing gasket 15, so that the sealing gasket 15 is compressed and deformed, and the sealing of the waterway, the air passage and the external environment is realized.
When the water bottle joint 3 and the interface main body are assembled, air provided by the system enters the interface main body through the air pipe 9, and then flows to the air passage II 7 in the water bottle joint 3 through the air passage transfer pipe 18 to enter the water bottle; the water in the water bottle enters the first waterway channel 4 in the interface main body through the second waterway channel 6 in the water bottle joint 3, and then enters the water pipe 10 through the water-gas three-way seat 8, so that the waterway transmission is realized.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides a water-gas joint assembly of electronic endoscope, includes joint main part (2) and water bottle joint (3) that are arranged in the water-gas interface of leaded light portion casing (1) and are used for with joint main part (2) butt joint, joint main part (2) on be equipped with water route passageway one (4) and air route passageway one (5), water bottle joint (3) on have with water route passageway two (6) and air route passageway two (7) of setting up with air route passageway one (5) relatively, its characterized in that, the inner of water-gas interface is fixed with water-gas tee bend seat (8) that have air inlet and delivery port on it, air inlet department link firmly trachea (9), delivery port department link firmly water pipe (10), joint main part (2) pass behind the water-gas interface with water-gas tee bend seat (8) threaded connection, delivery port and water route passageway one (4) intercommunication, air inlet and air route passageway one (5) intercommunication, joint main part (2) and water bottle joint (3) between be equipped with locking structure; the water-gas three-way seat (8) is cylindrical, the top end of the water-gas three-way seat is provided with a top plate (11), the water outlet penetrates through the top plate (11) and is coaxially arranged with the water-gas three-way seat (8), the first waterway channel (4) is coaxially arranged with the water outlet, the inner side of the top plate (11) is provided with an annular groove (12) coaxially arranged with the water outlet, the air inlet is communicated with the annular groove (12), and the first air channel (5) is also communicated with the annular groove (12); a waterproof ring I (13) arranged around the waterway I (4) is arranged between the inner side of the top plate (11) and the joint main body (2), and an O-shaped sealing ring (14) is arranged between the joint main body (2) and the water-gas three-way seat (8); one end of the connector main body (2) close to the water bottle connector (3) is provided with a concave cavity, a sealing gasket (15) is arranged in the concave cavity, a first yielding hole (16) which is opposite to the first air path channel (5) and a second yielding hole (17) which is opposite to the first water path channel (4) are formed in the sealing gasket (15), the water bottle connector (3) is abutted against the sealing gasket (15) under the action of a locking structure, and a limiting structure for limiting the sealing gasket (15) to circumferentially rotate is arranged in the concave cavity; the utility model provides a water-jug connects (3) be close to the one end that connects main part (2) and have and extend to the outside annular fender edge (19) of connecting main part (2), locking structure including two locate outside spacing post (20) of connecting main part (2), two locate on annular fender edge (19) respectively with spacing post (20) correspond longitudinal groove (21) and two respectively with longitudinal groove (21) intercommunication transverse groove (22), spacing post (20) along the radial extension and the symmetric distribution of connecting main part (2), two transverse groove (22) symmetric distribution, two the distance of spacing post (20) outer end is greater than the internal diameter that annular fender edge (19).
2. The water-gas joint assembly of the electronic endoscope according to claim 1, wherein the inside of the water-gas three-way seat (8) is provided with internal threads, and the outside of the joint main body (2) is provided with external threads.
3. The water-gas joint assembly of the electronic endoscope according to claim 1, wherein the limiting structure comprises a gas passage transfer tube (18) in threaded connection with the first gas passage (5), and the other end of the gas passage transfer tube (18) is arranged in a yielding hole (16) of the sealing gasket (15) in a penetrating manner.
4. A water gas joint assembly of an electronic endoscope according to claim 3, characterized in that the inner end side part of the transverse groove (22) is provided with a notch (23) recessed towards one side of the joint main body (2), and the air channel two (7) is communicated with the air channel transfer tube (18) when the limit post (20) is clamped into the notch (23).
5. The water-gas joint assembly of the electronic endoscope according to claim 4, wherein the thickness of the sealing pad (15) is smaller than the depth of the concave cavity, the front end of the water bottle joint (3) is provided with an axial protrusion (24) which is matched with the concave cavity, the second water channel (6) and the second air channel (7) are arranged on the axial protrusion (24) in a penetrating way, and when the limiting post (20) is clamped into the concave cavity (23), the distance from the end part of the axial protrusion (24) to the bottom of the concave cavity is smaller than the maximum thickness of the sealing pad (15).
6. A water-gas joint assembly of an electronic endoscope according to claim 3, wherein the first air passage (5) is two and is respectively located at two sides of the first water passage (4), and an air passage transfer tube (18) is screwed in each first air passage (5).
7. The water-gas joint assembly of the electronic endoscope according to claim 1, wherein a limiting step (25) is arranged outside the joint main body (2), and a waterproof ring II (26) is arranged between the limiting step (25) and the outer end surface of the water-gas joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291254.1A CN108478172B (en) | 2018-03-30 | 2018-03-30 | Water-gas joint assembly of electronic endoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291254.1A CN108478172B (en) | 2018-03-30 | 2018-03-30 | Water-gas joint assembly of electronic endoscope |
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| CN108478172A CN108478172A (en) | 2018-09-04 |
| CN108478172B true CN108478172B (en) | 2024-05-24 |
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| CN201810291254.1A Active CN108478172B (en) | 2018-03-30 | 2018-03-30 | Water-gas joint assembly of electronic endoscope |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109549617A (en) * | 2018-09-26 | 2019-04-02 | 南京市妇幼保健院 | A kind of self-cleaning lens of laparoscope of antifog waterproof |
| CN110840375A (en) * | 2019-11-22 | 2020-02-28 | 杭州维斯博医疗科技有限公司 | Endoscope with a detachable handle |
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| CN203107073U (en) * | 2013-04-01 | 2013-08-07 | 中国人民解放军第一七五医院 | Air and water injection device for endoscope |
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| CN105212881A (en) * | 2015-10-26 | 2016-01-06 | 深圳开立生物医疗科技股份有限公司 | A kind of joint, endoscope send water system and endoscope |
| CN208851445U (en) * | 2018-03-30 | 2019-05-14 | 重庆金山医疗器械有限公司 | The aqueous vapor joint assembly of endoscope |
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| WO2011032067A1 (en) * | 2009-09-14 | 2011-03-17 | Bracco Diagnostics Inc. | In-line gas adaptor for endoscopic apparatus |
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| US4261345A (en) * | 1978-11-20 | 1981-04-14 | Olympus Optical Co., Ltd. | Endoscope connector |
| US6210322B1 (en) * | 1998-02-09 | 2001-04-03 | Donny M. Byrne | Adapter for the connection of a water bottle to an endoscope |
| CN203107073U (en) * | 2013-04-01 | 2013-08-07 | 中国人民解放军第一七五医院 | Air and water injection device for endoscope |
| CN203634117U (en) * | 2013-12-26 | 2014-06-11 | 深圳市开立科技有限公司 | Endoscope steam device convenient to disassemble and endoscope device comprising same |
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| CN108478172A (en) | 2018-09-04 |
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