CN114748019B - Adjustable sealing valve, control method and endoscope system - Google Patents
Adjustable sealing valve, control method and endoscope system Download PDFInfo
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- CN114748019B CN114748019B CN202210374069.5A CN202210374069A CN114748019B CN 114748019 B CN114748019 B CN 114748019B CN 202210374069 A CN202210374069 A CN 202210374069A CN 114748019 B CN114748019 B CN 114748019B
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- sealing valve
- silica gel
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- gel ring
- interface
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00066—Proximal part of endoscope body, e.g. handles
- A61B1/00068—Valve switch arrangements
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
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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
- A61B1/012—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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- 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
- A61B1/018—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 for receiving instruments
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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
- A61B1/307—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an adjustable sealing valve, which comprises a three-way joint, wherein the three-way joint comprises a first interface, a second interface and a third interface, the first interface is connected with a fixed knob, the second interface is connected with a connecting mechanism, a top cap is arranged on the fixed knob, the three-way joint is positioned at an inner cavity of the first interface and is provided with a connecting boss, and the inner cavity of the first interface is provided with a flexible elastomer connected with the connecting boss.
Description
Technical Field
The invention relates to the technical field of endoscopes, in particular to an adjustable sealing valve, a control method and an endoscope system.
Background
Most kidney stones require surgical treatment, and current minimally invasive techniques for treating kidney stones mainly include: percutaneous nephroscope technology, ureteroscope technology and ureteroscope hard technology, all three technologies are through endoscope entering ureter or kidney, apply different rubble technologies (including laser, supersound and atmospheric pressure trajectory) to smash the calculus, take out or suck out, reach the purpose of getting clean calculus and protecting kidney function.
Different urological endoscopes (including fine nephroscopes, soft ureteroscopes, and hard ureteroscopes) are configured with 2 to 3 operation interfaces. One of the interfaces is a water flow perfusion interface which is connected with a water flow perfusion system of an endoscope, the water flow perfusion system is an indispensable integral component part of the urinary endoscope operation, can keep the visual field clear, maintain the smoothness of a urinary cavity and clear fragments and bleeding generated by the operation, the second interface is an operation channel interface which is connected with an operation channel of the endoscope, and a doctor can put different medical instruments into a series of clinical operations through the operation channel during the operation, for example, can put a guide wire during the endoscope operation, put a laser optical fiber during the lithotripsy, and take stones by using a stone taking basket after the lithotripsy is finished.
However, the operating channel interface of existing urinary endoscopes is typically a rubber plug, which suffers from the following significant drawbacks:
1. when the medical instrument with the soft end part is placed into the operation channel from the operation channel interface, the medical instrument is not easy to be placed;
2. the repeated placement of medical instruments with different sizes can lead to gradual increase of the hole in the middle of the rubber plug, when the water flow perfusion system is utilized to perfuse the flushing liquid into the human body in the operation process, part of the flushing liquid can leak outwards from the hole of the rubber plug (namely, a sealed perfusion circuit cannot be maintained), so that the flushing liquid quantity actually reaching the front end of the endoscope cannot meet the requirement, finally, the operation vision is unclear, the operation process and quality are seriously influenced, and even the endoscope is damaged by laser generated by the laser fiber because the vision is unclear; secondly, a large amount of heat is generated in the laser lithotripter process, insufficient perfusion quantity can lead flushing liquid to not take away enough heat, so that the temperature in a narrow ureter cavity is rapidly increased, thermal damage is generated to the ureter wall, and ureter stenosis complications occur after operation; in addition, the flushing liquid at the rear end of the endoscope leaks at the interface of the operation channel, and there is a risk of cross infection of the surgeon, particularly infectious diseases such as viral hepatitis B, viral hepatitis C and the like;
3. the connection stability of the rubber plug and the endoscope is poor, and when the perfusion pressure is too large in the manual injection perfusion mode, the rubber plug falls off, so that the operation cannot be performed;
4. the rubber plug has no function of fixing the laser fiber, so that when the soft ureteroscope and the laser fiber are used for lithotripsy, a doctor needs to fix the laser fiber by hand, otherwise, the laser fiber can retract to the lens body of the soft ureteroscope or the operation channel in the advancing, retreating, rotating and bending processes of the soft ureteroscope, so that the soft ureteroscope is damaged, and the maintenance cost of the soft ureteroscope is extremely high. If the calculus is large, the operation time is long, and at the moment, a doctor needs to keep the laser fiber and the soft ureteroscope relatively fixed by hands for a long time, and under the long-time operation, the doctor is very easy to feel tired.
Disclosure of Invention
The invention aims to solve the problems and designs an adjustable sealing valve, a control method and an endoscope system.
The technical scheme of the invention for achieving the purpose is that the adjustable sealing valve comprises a three-way joint, wherein the three-way joint comprises a first interface, a second interface and a third interface, a fixed knob is connected to the first interface, a connecting mechanism is connected to the second interface, a top cap is arranged on the fixed knob, a flexible elastomer connected with a connecting boss is arranged in an inner cavity of the first interface, and a pressing gasket is arranged at one end, far away from the connecting boss, of the flexible elastomer.
As a further description of the technical scheme, the flexible elastomer is of a hollow columnar structure, a first flange is arranged on the periphery of the flexible elastomer, a first extrusion surface is arranged at the middle part of the flexible elastomer, the first flange protrudes out of the first extrusion surface, a pressing boss is arranged on one side, close to the flexible elastomer, of the pressing gasket, and the shape of the pressing boss is matched with that of the first flange and the first extrusion surface.
As a further description of the technical scheme, a second flange is further arranged on the periphery of the flexible elastomer, a second extrusion surface is arranged at the middle part of the flexible elastomer, the second flange protrudes out of the second extrusion surface, a connecting boss is arranged at the inner cavity of the three-way joint at the first interface, and the shape of the connecting boss is matched with that of the second flange and the second extrusion surface.
As the further description of this technical scheme, the top inside of fixed knob is provided with the auxiliary tank, the auxiliary tank be provided with top block internal connection prevent backward flow silica gel circle, prevent backward flow silica gel circle is columnar structure, prevent backward flow silica gel circle includes first face, second face, third face, the second face is prevent backward flow silica gel circle's side, be equipped with sunken guide way on the first face, prevent backward flow silica gel circle's inside is provided with pressure release guiding slit, pressure release guiding slit is followed the surface of guide way is in prevent backward flow silica gel circle's inside extends to the third face, pressure release guiding slit is in pressure release guiding surface that forms on the pressure release guiding piece.
As a further description of the technical scheme, the pressure relief guide surface is provided with a first side line and a second side line, the first side line is parallel to or coincides with the central axis L1 of the backflow prevention silica gel ring, a broken line formed by two end points of the second side line is L2, and an included angle between a straight line projected by the broken line L2 on the central axis L1 and the central axis L1 is alpha.
As a further description of the present technical solution, the included angle α is 0 degrees, that is, the imaginary line L2 is in a spatially parallel relationship with the central axis L1.
As a further description of the present technical solution, at least a portion of the second edge line is located at one side of the broken line L2.
As a further description of the present technical solution, all the segments of the second edge line are located at one side of the broken line L2.
As a further description of the present technical solution, the shape of the second edge is C-shaped.
As a further description of the present technical solution, the partial segment of the second edge is located at one side of the imaginary line L2, and the remaining partial segment of the second edge is located at the other side of the imaginary line L2.
As a further description of the present technical solution, the shape of the second edge is S-shaped.
As a further description of the present technical solution, the partial segment of the second edge is located at the side of the imaginary line L2, and the other partial segments are coincident with the imaginary line L2.
As a further description of the technical scheme, the fixing knob comprises a knob main body, a pressure relief pipeline is arranged on the knob main body, and a pressure relief channel is arranged on the top cap.
As further description of the technical scheme, a pressure relief silica gel piece is arranged in the pressure relief channel, and a pressure relief opening is formed in the pressure relief silica gel piece.
As a further description of the technical scheme, the pressure relief opening is a pressure relief slit, a pressure relief small hole or a combination thereof.
The control method of the adjustable sealing valve comprises two control methods, namely a control method of the adjustable sealing valve when the instrument is not inserted and a control method of the adjustable sealing valve when the instrument is inserted.
As a further description of the present solution, a control method of an adjustable sealing valve when no instrument is inserted, comprises the steps of:
the inner cavity of the flexible elastomer is completely opened in the initial state;
rotating the fixed knob, wherein the fixed knob generates displacement in a direction approaching to the flexible elastomer under the action of force rotation, and directly applies axial acting force to the mounting tube;
the mounting cylinder and the pressing washer displace along the same direction as the fixed knob under the axial acting force, and the force is transmitted to one end of the flexible elastomer, which is close to the mounting cylinder;
the flexible elastomer is elastically deformed under the extrusion of axial acting force, and part of the flexible elastomer is deformed along the radial direction and gradually fills the inner cavity of the flexible elastomer;
when the fixed knob rotates to a certain degree, the inner cavity of the flexible elastomer is in a complete sealing state;
a method of controlling an adjustable sealing valve when inserting an instrument, comprising the steps of:
pushing the instrument from the guide groove of the backflow-preventing silica gel ring;
under the acting force of the instrument, the pressure release guide piece of the backflow prevention silica gel ring deforms along the axial direction of the backflow prevention silica gel ring from the center to the edge;
the central inlet of the backflow-preventing silica gel ring is increased, an instrument enters the sealing valve and penetrates through the inner cavity of the flexible elastomer until reaching the tail end of the endoscope body;
after the pushing of the instrument is stopped, the pressure release guide piece is quickly restored to the original shape due to the elastic action of the pressure release guide piece and the arc-shaped arrangement of the pressure release guide surface, and the instrument is fixed by the pressure release guide piece of the backflow prevention silica gel ring to form a first fixed position and a first sealing position;
the fixing knob is rotated to enable the flexible elastomer to elastically deform until the flexible elastomer circumferentially tightly wraps the periphery of the instrument, so that a second fixing position and a second sealing position are formed.
An endoscope system comprises the adjustable sealing valve and an endoscope body, wherein an operation part and an insertion part are arranged on the endoscope body, and the insertion part is of a tubular structure and is used for being inserted into a human body; the operation part is of an ergonomic design structure, the front end of the insertion part can be held and/or manipulated by a human hand to bend, the proximal end of the insertion part is connected with the distal end of the operation part, an operation channel is arranged in the insertion part, a valve interface is arranged on the operation part, the operation channel extends from the distal end of the insertion part to the valve interface along the length direction of the insertion part and is connected with the valve interface, the operation channel can be of a hollow tubular structure, and the adjustable sealing valve is arranged on the endoscope body.
The adjustable sealing valve has the advantages that the adjustable sealing valve is ingenious in structural design and high in practicability, has the characteristics of easiness in operability, tightness in waterproofness and firmness in fixing operation instruments, improves the convenience in installation of instruments with soft heads, is high in tightness, can effectively reduce the risk of cross infection in the operation process, is high in firmness in the operation process, and greatly improves the convenience in operation.
Drawings
FIG. 1 is a schematic view of the overall structure of a sealing valve of the present invention;
FIG. 2 is a schematic cross-sectional view of one of the viewing angles of the sealing valve of the present invention;
FIG. 3 is a schematic cross-sectional structural view of the sealing valve of the present invention from another perspective;
FIG. 4 is an enlarged partial schematic view of the flexible elastomer of the present invention;
FIG. 5 is a schematic view of a first angular view of the anti-reflux silicone ring of the sealing valve of the present invention;
FIG. 6 is a second angular view of the anti-reflux silicone ring of the sealing valve of the present invention;
FIG. 7 is a schematic perspective view of an anti-reflux silicone ring of the sealing valve of the present invention;
FIG. 8 is a schematic view of the anti-reflux principle of the anti-reflux silicone ring of the sealing valve of the present invention;
FIG. 9 is a schematic illustration of the manner in which the sealing valve of the present invention is used;
FIG. 10 is a schematic view of the sealing valve of the present invention in a first use condition without the insertion of an instrument;
FIG. 11 is a schematic view of the sealing valve of the present invention in a second use condition without instrument insertion;
FIG. 12 is a schematic view of the sealing valve of the present invention in a third use condition without instrument insertion;
FIG. 13 is a schematic flow diagram of a first control mode of the sealing valve of the present invention without instrument insertion;
FIG. 14 is a schematic view of the sealing valve of the present invention in a first use condition with an instrument inserted;
FIG. 15 is a schematic view of the sealing valve of the present invention in a second use condition with an instrument inserted;
FIG. 16 is a flow chart diagram of a second control mode of the sealing valve of the present invention when no instrument is inserted.
In the figure, 1, a three-way joint; 2. a first interface; 3. a second interface; 4. a third interface; 5. fixing a knob; 6. a connecting mechanism; 7. a top cap; 8. a connecting boss; 9. a flexible elastomer; 91. a first flange; 92. a first flange; 93. a second pressing surface; 94. a first pressing surface; 95. a flexible elastomer lumen; 10. pressing a gasket; 100. pressing the boss; 12. an external thread; 13. a knob body; 14. a mounting cylinder; 15. a mounting cavity; 16. an internal thread; 17. an auxiliary block; 18. the boss is clamped; 19. an auxiliary groove; 20. anti-reflux silica gel ring; 200. a first face; 201. a second face; 202. a third face; 203. a guide groove; 204. decompression guide slot; 205. a pressure relief guide; 2020. a boss; 206. a pressure relief guide surface; 2060. a first edge; 2061. a second edge; 21. sealing the silica gel ring; 22. a pressure relief channel; 23. decompression silica gel piece; 24. a connection lock; 25. connecting external threads; 26. and a pressure release pipeline.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution of an embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiment of the present invention, and it is apparent that the described embodiment is only a part of embodiments of the present invention, but not all embodiments, and based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with the interior of two elements, the specific meaning of the terms in this invention will be understood by those of ordinary skill in the art.
The invention is specifically described below with reference to the accompanying drawings, as shown in fig. 1, the adjustable sealing valve comprises a three-way joint 1, the three-way joint 1 comprises a first interface 2, a second interface 3 and a third interface 4, a fixed knob 5 is connected to the first interface 2, the fixed knob 5 will be described below, the fixed knob 5 comprises a knob main body 13, an installation cylinder 14 is integrally formed on the knob main body 13, the installation cylinder 14 is arranged in an inner cavity of the first interface 2, an installation cavity 15 is formed between the inside of the knob main body 13 and the outside of the installation cylinder 14, for facilitating connection between the first interface 2 and the fixed knob 5, an internal thread 16 is arranged in the installation cavity 15, the first interface 2 is arranged in the installation cavity 15, and the first interface and the fixed knob are in matched connection through an external thread 12 and the internal thread 16.
The three-way connector 1 is located the inner chamber department of first interface 2 is provided with and connects boss 8, is provided with the flexible elastomer 9 of being connected with connecting boss 8 in the inner chamber of first interface 2, and flexible elastomer 9 middle part is the apparatus through-hole, and flexible elastomer 9 also possesses good leakproofness when fixing the apparatus, carries out the detailed description to flexible elastomer 9 below:
referring to fig. 4, fig. 4 shows an enlarged partial schematic view of the flexible elastic body 9.
The flexible elastic body 9 is a hollow columnar structure, a first flange 91 and a second flange 92 are arranged on the periphery of the hollow columnar structure, a first extrusion surface 94 and a second extrusion surface 93 are arranged at the middle part of the flexible elastic body 9, the first flange 91 protrudes from the first extrusion surface 94, and the second flange 92 protrudes from the second extrusion surface 93. The shape of the pressing washer 10 on the side close to the flexible elastic body 9 matches the shape of the first flange 91 and the first pressing surface 94. In the embodiment shown in the drawings, the cross-sections of the first flange 91 and the second flange 92 are regular concave right-angle shapes, and the cross-sectional shapes of the side of the flexible elastic body 9 and the connecting boss 8 are correspondingly set to convex right-angle shapes. The benefits of this arrangement are described below:
in the initial state, the flexible elastomer lumen 95 is fully open; when the fixing knob 5 is rotated, the fixing knob 5 is displaced in a direction approaching to the flexible elastic body 9 under the rotation of force, and an axial acting force is directly formed on the mounting cylinder 14, the mounting cylinder 14 and the pressing washer 10 are displaced in the same direction as the fixing knob 5 under the axial acting force, the pressing boss 100 of the pressing washer 10 presses the first pressing surface 94 and transmits the force to one end, approaching to the mounting cylinder 14, of the flexible elastic body 9, between the first pressing surface 94 and the second pressing surface 93, of the flexible elastic body 9 is elastically deformed under the pressing of the axial acting force, and is deformed in the radial direction and gradually fills the inner cavity 95 of the flexible elastic body, and when the fixing knob 5 is rotated to a certain degree, the inner cavity 15 of the flexible elastic body 9 is in a completely sealed state.
The thickness of the first flange 91 in the axial direction becomes smaller and the thickness of the first flange in the radial direction becomes larger under the action of the press-fit gasket 10, and at this time, the first flange 91 is in close contact and fit with the inner wall of the mounting cylinder 14 and the annular surface of the press-fit gasket 10 in the axial direction, and is in close contact and fit with the annular surface of the press-fit gasket 10 in the radial direction, so that good tightness is formed. Also, a good sealing property is formed at the second flange 92, and the principle is the same as that at the first flange 91, and will not be described again.
As can be seen from the above description, the flexible elastic body 9, the pressing washer 10 and the connecting boss 8 form a good sealing effect, and when the backflow liquid flows back to the two parts, the backflow liquid cannot leak into the mounting cavity 15, and thus cannot overflow the sealing valve.
In another embodiment, the shapes at the left and right sides of the cross section of the first flange 91 are respectively in a "Z" shape and an inverse "Z" shape, the cross section of the corresponding pressing washer 10 is respectively in a "Z" shape and an inverse "Z" shape to be matched with the shape, at this time, the flexible elastic body 9 is fixedly connected with the pressing washer 10 (corresponding to the fastening of the pressing washer 10 on the flexible elastic body 9), and other embodiments are the same as those of the above embodiment. With this arrangement, the sealing performance of the joint of the flexible elastic body 9 and the pressing washer 10 is more excellent.
In a preferred embodiment, the flexible elastomer 9 is made of high-elasticity medical grade rubber, and the material can resist extremely large physical deformation and can be quickly restored to a shape from large deformation, so that the situation that blockage caused by irrecoverable after deformation cannot occur in the operation process can be avoided, the pressing washer 10 is arranged at one end of the flexible elastomer 9, which is far away from the connecting boss 8, and the pressing washer 10 is made of polytetrafluoroethylene high polymer material, and the material has the characteristics of acid resistance, alkali resistance and various organic solvents, is almost insoluble in all solvents, and meanwhile, the friction coefficient of polytetrafluoroethylene is extremely low, and the pressing washer 10 made of the material can well ensure the sealing performance after pressing.
The second interface 3 is connected with a connecting mechanism 6, the connecting mechanism 6 comprises a connecting lock 24 arranged on the outer side of the second interface 3, the connecting lock 24 is preferably made of hard plastic, more preferably made of transparent medical PC (Polycarbonate), an English name Polycarbonate, PC for short, is thermoplastic resin containing a chain link in a molecular main chain, has the characteristics of high transparency, light weight, shock resistance, heat insulation, flame retardance, ageing resistance and the like, is energy-saving and environment-friendly plastic with extremely excellent comprehensive performance, and can prevent a joint from loosening and falling off in the operation process through the connection of the connecting lock 24 and an interface on an endoscope body.
The third port 4 is connected to an external perfusion system (not shown in the figure), in order to realize the connection of the third port 4, an external connection thread 25 may be provided on the outer side of the third port 4, and of course, other connection manners, such as a buckle, may also be used, and in order to ensure the sealing performance of the connection portion, a sealing element may also be provided on the third port 4, and the sealing element may be a sealing ring or the like.
In addition, be provided with top block 7 on fixed knob 5, in order to be convenient for fixed knob 5 and top block 7's connection, be provided with auxiliary groove 19 in fixed knob 5's top is inside, be provided with in the auxiliary groove 19 with top block 7 internally connected's anti-reflux silica gel circle 20.
The structure of the back-flow prevention silicone ring 20 is described in detail below:
referring to fig. 5 to 8, the backflow prevention silicone ring 20 has a cylindrical structure including a first surface 200, a second surface 201, and a third surface 202. The first surface 200 is provided with a concave guide groove 203; the second face 201 is a side face of the anti-backflow silicone ring 20, and is distributed along the circumferential direction of the anti-backflow silicone ring 20. Optionally, the first surface 200 and the third surface 202 are both planar structures, and the third surface 202 is provided with a boss 2020.
The anti-reflux silicone ring 20 is divided into a plurality of partially connected pressure relief guides 205 by at least one pressure relief guide slit 204, the pressure relief guide slit 204 extending from the surface of the guide groove 203 from the interior of the anti-reflux silicone ring 20 to the third face 202, preferably to the boss 2020 surface of the third face 202. The pressure release guide 205 has a pressure release guide surface 206 formed on the side surface thereof due to the arrangement of the pressure release guide slit 204.
Referring to fig. 7, the pressure relief guide surface 206 has a first edge 2060 and a second edge 2061. The first edge 2060 is parallel to the central axis L1 of the anti-reflux silicone ring 20 and preferably coincides with the central axis L1. The dashed line formed by the two end points of the second edge 2061 is L2, and the straight line projected by L2 on L1 may have a certain angle α with L1, and in a preferred embodiment, the angle α is 0, that is, L2 is in a spatially parallel relationship with the central axis L1.
For the shape of the second side line 2061, at least a partial section of the second side line 2061 is located on one side of the dashed line L2. In one embodiment, all segments of the second side line 2061 are located on one side of the dashed line L2, preferably the shape of the second side line 2061 is C-shaped; in another embodiment, a partial segment of the second side line 2061 is positioned on one side of the dashed line L2 and the remaining partial segment of the second side line 2061 is positioned on the other side of the dashed line L2, preferably the second side line 2061 has an S-shape (not shown in the figures); in other embodiments, the second side 2061 may coincide with the imaginary line L2 in addition to the partial segments being located laterally to the imaginary line L2.
Referring to fig. 2, when the reflux liquid flows back from the operation channel of the endoscope body to the sealing valve, the reflux liquid passes through the second port 3 and the inner cavity of the mounting cylinder 14, reaches the reflux silica gel ring 20, and under the pressure, the reflux liquid presses against the third face 202 of the reflux silica gel ring 20.
Because of the existence of the pressure relief guide slit 204, the backflow silicone gasket 20 is not in a completely sealed state, and when the pressure relief guide slit 204 is arranged in a vertical direction (i.e., the first side line 2060 and the second side line 2061 are both straight line segments and are spatially parallel to each other), the direction of the pressure relief guide slit 204 and the pressure direction of the backflow liquid are in the same direction, and the backflow liquid will easily flow to the first surface 200 along the pressure relief guide slit 204 arranged in the vertical direction, and finally overflows from the sealing valve.
Referring to fig. 8, with the solution of the present invention, when the reflux liquid presses against the third face 202 of the reflux silica gel ring 20 under pressure, all or part of the pressure relief guide face 206 deviates from the vertical face, the pressure relief guide face 206 has a certain angle with the flow direction of the reflux liquid, and the pressure relief guide face 206 will generate reflux resistance to the reflux liquid, which will hinder the reflux of the liquid. In addition, the length of the flowing path of the backflow liquid is prolonged, the difficulty of flowing the backflow liquid out of the sealing valve is further increased, and the sealing performance of the sealing valve is enhanced.
In addition, the pressure release guide surface 206 of the present invention is provided with an irregularly shaped arc surface, specifically, when the pressure release guide surface 206 of one pressure release guide 205 is provided with a concave arc surface, the pressure release guide surface 206 of the other pressure release guide 205 adjacent thereto is provided with a convex arc surface to be matched therewith. After pushing the instrument into the reflux silica gel ring 20 and stopping, the shape of the reflux silica gel ring 20 gradually returns to the original shape under the action of elastic force. Compared with the pressure relief guide slits 204 arranged in the vertical direction, the arrangement of the invention can enable the reflux silica gel ring 20 to completely recover to the original shape of the concave cambered surface and the convex cambered surface which are matched, and the recovery speed is faster. This not only increases the sealing properties, but also provides better fixation of the device.
Referring to fig. 1 and 2, in order to facilitate the operation of the rotary body 13, a plurality of auxiliary blocks 17 distributed circumferentially are provided on the outer side of the knob body 13, a clamping boss 18 for facilitating the installation of the top cap 7 is provided in the middle of the outer side of the knob body, and a sealing silica gel ring 21 is provided on the clamping boss 18, wherein the sealing silica gel ring 21 is in contact with the inside of the top cap 7.
Referring to fig. 3, the top cap 7 is provided with a pressure release channel 22, a pressure release component 23 is disposed in the pressure release channel 22, the pressure release component 23 is preferably a silica gel sheet, a pressure release opening is disposed on the pressure release component 23, and the shape of the pressure release opening may be a pressure release slit, a pressure release small hole, a combination of the pressure release small hole and the pressure release slit, or other shapes that can be considered by those skilled in the art. In the embodiment shown in fig. 3, the pressure relief vent is shaped as a cross slit. The knob body 13 is provided with a pressure relief pipe 26. Through this pressure relief port, when the pressure of the internal liquid of the adjustable sealing valve is too high (i.e. overpressure), part of the liquid can enter the pressure relief channel 22 or overflow from the pressure relief port, so as to relieve the excessive pressure of the liquid in the adjustable sealing valve, otherwise, the excessive hydraulic pressure will squeeze the anti-reflux silica gel ring 20, so that the liquid flows out from the pressure relief guide slit 204 of the anti-reflux silica gel ring 20, and the pressure relief guide slit 204 is directed towards the medical staff, which will cause cross infection. And the arrangement of the sealing silica gel ring 21 ensures that liquid cannot overflow from the sealing silica gel ring 21, so that the sealing performance is enhanced. Specifically, before the instrument is inserted, there may be extreme cases such as poor sealing performance of the flexible elastomer 9, at which time the liquid is already filled in the inner cavity of the mounting cylinder 14, after the instrument is inserted, the liquid in the adjustable sealing valve will be displaced by the instrument, the displaced liquid will enter the pressure release channel 22 from the pressure release pipe 26, i.e. the pressure release channel 22 stores part of the liquid in the overpressure, and the pressure release channel 22 acts as a buffer for the liquid. In a more extreme case, the overpressure liquid is too much, and the liquid has reached the pressure relief part 23, and when the liquid pressure continues to increase, the overpressure liquid will overflow from the preset pressure relief opening. In order to further prevent the risk of cross infection during the operation, the direction of the pressure release channel 22 can be adjusted by rotating the top cap 7, so that the pressure release opening is not oriented to medical workers, and optionally, a collecting device can be arranged at the pressure release opening for collecting the reflux liquid, thereby further ensuring the use safety.
After the instrument is inserted, the fixing knob 5 is rotated to adjust the operation hand feeling, the fixing knob 5 can be rotated to obtain good holding force, the instrument is prevented from loosening in operation, the diameter of an instrument channel is phi 3.2mm, the maximum size of an adapter instrument is 9.6Fr, the good perfusion rate can be ensured when the conventional instrument is used, the 6 percent (Ruhr) national standard conical joint of the medical instrument is convenient to assemble with an endoscope, and meanwhile, the endoscope can be matched with most of urine secretion endoscopes (including a fine nephroscope, a soft ureteroscope and a hard ureteroscope) on the market.
In a preferred embodiment, the anti-reflux silica gel ring 20, the sealing silica gel ring 21 and the pressure release silica gel sheet 23 are soft silica gel products, and the medical silica gel is selected as a material, so that the silica gel has good biocompatibility, no irritation, no toxicity, no anaphylactic reaction and little organism rejection reaction to human tissues, has good physical and chemical properties, can keep the original elasticity and softness, is not degraded in the use process, and is a quite stable inert substance.
The specific structure of the adjustable sealing valve is described in detail above, the control method of the adjustable sealing valve is described in detail below, the adjustable sealing valve can have at least two control methods, and the detailed description below is provided:
the first control method comprises the following steps: when no instrument is inserted, please refer to fig. 10-13. In the initial state, the flexible elastomer lumen 95 is fully open; when the fixing knob 5 is rotated, the fixing knob 5 is displaced in a direction approaching to the flexible elastic body 9 under the rotation of force, and an axial acting force is directly formed on the mounting cylinder 14, the mounting cylinder 14 and the pressing washer 10 are displaced in the same direction as the fixing knob 5 under the axial acting force, the pressing boss 100 of the pressing washer 10 presses the first pressing surface 94 and transmits the force to one end, approaching to the mounting cylinder 14, of the flexible elastic body 9, between the first pressing surface 94 and the second pressing surface 93, of the flexible elastic body 9 is elastically deformed under the pressing of the axial acting force, and is deformed in the radial direction and gradually fills the flexible elastic body cavity 95, and when the fixing knob 5 is rotated to a certain degree, the flexible elastic body cavity 95 is in a completely sealed state.
And a second control method: when inserting an instrument, please refer to fig. 14-16. When pushing the instrument to the guide groove 203 of the anti-reflux silica gel ring 20 of the adjustable sealing valve, under the action of the instrument, the pressure release guide piece 205 of the anti-reflux silica gel ring 20 deforms from the center to the edge along the axial direction of the anti-reflux silica gel ring 20, the central inlet of the anti-reflux silica gel ring 20 is increased, the instrument enters the adjustable sealing valve and passes through the flexible elastomer inner cavity 95 until reaching the tail end of the endoscope body, after the pushing of the instrument is stopped, the pressure release guide piece 205 is quickly restored to the original shape due to the elastic action of the instrument and the cambered surface of the pressure release guide surface 206, the instrument is fixed by the pressure release guide piece 205 of the anti-reflux silica gel ring 20 to form a first fixed position and a first sealed position, and the flexible elastomer 9 is elastically deformed by rotating the fixed knob 5 until the circumference of the flexible elastomer 9 tightly wraps the periphery of the instrument to form a second fixed position and a second sealed position. The first fixing position and the second fixing position firmly fix the position of the instrument, and compared with a single-point fixing method, the double-point fixing method is more stable and firm, and the instrument cannot shake. The first seal and the second seal form a secondary seal and liquid cannot leak from the anti-reflux silicone ring 20. When reflux liquid is indeed present, the pressure relief channel 22 may be oriented so as not to face the practitioner to prevent cross-contamination.
In addition, the invention also provides an endoscope system, and reference is made to fig. 9. The endoscope system comprises the adjustable sealing valve and an endoscope body, wherein the endoscope body is provided with an operation part and an insertion part. The insertion part is of a tubular structure and is used for being inserted into a human body; the operation part is an ergonomic design structure and can be used for holding and/or manipulating the front end of the insertion part by a human hand to bend; the proximal end of the insertion portion is connected to the distal end of the operation portion. The insertion part is internally provided with an operation channel, the operation part is provided with a valve interface, the operation channel extends from the far end of the insertion part to the valve interface along the length direction of the insertion part and is connected with the valve interface, and the operation channel can be of a hollow tubular structure. The adjustable sealing valve is mounted on the endoscope body and in one embodiment, the connection lock 24 of the adjustable sealing valve is fixedly connected with the valve interface on the operating part.
In an embodiment not shown in the figures, the third port 4 of the adjustable sealing valve is connected to a physiological saline bag by a hose, and physiological saline flows from the hose to the adjustable sealing valve under the force of gravity and out of the distal end of the insertion portion along the operation channel. If no instrument is inserted during operation, screwing the fixed knob 5 of the adjustable sealing valve in a clockwise direction, and adjusting the direction of the pressure release channel 22 to be not towards medical workers; if an instrument is needed to be inserted in the operation process, the fixing knob 5 is unscrewed in the anticlockwise direction, the instrument is inserted into the adjustable sealing valve and the endoscope body from the backflow-preventing silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches a designated position, the fixing knob 5 of the adjustable sealing valve is screwed again in the clockwise direction, so that better sealing property and instrument stability can be realized; when the instrument is required to be taken out, the fixing knob 5 is unscrewed in the anticlockwise direction, and after the instrument is completely taken out, the fixing knob 5 is screwed again.
In a second embodiment, not shown in the figures, a perfusion interface is further provided on the operation portion of the endoscope body, the operation channel has a Y-shaped structure, which extends from the distal end of the insertion portion to the front of the valve interface along the length direction of the insertion portion, is divided into two parts, one end of which is connected to the valve interface, and the other end is connected to the perfusion interface, which is connected to the saline bag through a hose, and saline flows from the hose to the adjustable sealing valve under the action of gravity and flows out from the distal end of the insertion portion along the operation channel; if no instrument is inserted during operation, screwing the fixed knob 5 of the adjustable sealing valve in a clockwise direction, and adjusting the direction of the pressure release channel 22 to be not towards medical workers; if an instrument is needed to be inserted in the operation process, the fixing knob 5 is unscrewed in the anticlockwise direction, the instrument is inserted into the adjustable sealing valve and the endoscope body from the backflow-preventing silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches a designated position, the fixing knob 5 of the adjustable sealing valve is screwed again in the clockwise direction, so that better sealing property and instrument stability can be realized; when the instrument is required to be taken out, the fixing knob 5 is unscrewed in the anticlockwise direction, and after the instrument is completely taken out, the fixing knob 5 is screwed again.
In a third embodiment, not shown in the drawings, the operation part of the endoscope body is further provided with a perfusion interface, and correspondingly, a perfusion channel is further arranged in the insertion part, the perfusion channel extends from the distal end of the insertion part to the valve interface along the length direction of the insertion part, the perfusion channel can be of a hollow tubular structure, the perfusion interface is connected with a physiological saline bag through a hose, and physiological saline flows from the hose to the adjustable sealing valve under the action of gravity and flows out from the distal end of the insertion part along the perfusion channel; if no instrument is inserted during operation, screwing the fixed knob 5 of the adjustable sealing valve in a clockwise direction, and adjusting the direction of the pressure release channel 22 to be not towards medical workers; if an instrument is needed to be inserted in the operation process, the fixing knob 5 is unscrewed in the anticlockwise direction, the instrument is inserted into the adjustable sealing valve and the endoscope body from the backflow-preventing silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches a designated position, the fixing knob 5 of the adjustable sealing valve is screwed again in the clockwise direction, so that better sealing property and instrument stability can be realized; when the instrument is required to be taken out, the fixing knob 5 is unscrewed in the anticlockwise direction, and after the instrument is completely taken out, the fixing knob 5 is screwed again.
The adjustable sealing valve has tight waterproofness and firm fixation of the operation instrument in use, and can achieve very good operation experience by adjusting the fixing knob 5 during operation of the instrument.
The adjustable sealing valve has the characteristics of ingenious structural design, strong practicability, easy operability, tight waterproofness and firm operation instrument fixation, improves the convenience of instrument installation with a soft head end, has good sealing performance, can effectively reduce the risk of cross infection in the operation process, and has good firmness in the operation process, thereby greatly improving the convenience of the operation.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (13)
1. The utility model provides a sealing valve with adjustable, its characterized in that includes three way connection (1), three way connection (1) include first interface (2), second interface (3), third interface (4), first interface (2) department is connected with fixed knob (5), second interface (3) department is connected with coupling mechanism (6), be provided with top block (7) on fixed knob (5), the inner chamber of first interface (2) is provided with flexible elastomer (9) be connected with connection boss (8), flexible elastomer (9) keep away from connection boss (8) one end is provided with pressfitting packing ring (10);
an auxiliary groove (19) is formed in the top end of the fixing knob (5), an anti-backflow silica gel ring (20) connected with the inside of the top cap (7) is arranged in the auxiliary groove (19), the anti-backflow silica gel ring (20) is of a columnar structure, the anti-backflow silica gel ring (20) comprises a first face (200), a second face (201) and a third face (202), and the second face (201) is a side face of the anti-backflow silica gel ring (20) and is distributed along the circumferential direction of the anti-backflow silica gel ring (20); the first surface (200) is provided with a concave guide groove (203), the first surface (200) and the third surface (202) are both in a plane structure, and the third surface (202) is provided with a boss (2020);
the inside of the backflow prevention silica gel ring (20) is provided with a pressure relief guide slit (204), and the pressure relief guide slit (204) extends from the surface of the guide groove (203) to the third surface (202) in the inside of the backflow prevention silica gel ring (20) and extends to the surface of a boss (2020) of the third surface (202); the anti-backflow silica gel ring (20) is divided into a plurality of pressure relief guide pieces (205) which are partially connected by at least one pressure relief guide slit (204), and the surface of the pressure relief guide slit (204) formed on the pressure relief guide pieces (205) is a pressure relief guide surface (206);
when the reflux liquid flows back from the operation channel of the endoscope body to the sealing valve, the reflux liquid passes through the second interface (3) and the inner cavity of the mounting cylinder (14) and reaches the reflux silica gel ring (20), and under the action of pressure, the reflux liquid presses the third surface (202) of the reflux silica gel ring (20);
the pressure relief guide surface (206) is provided with a first side line (2060) and a second side line (2061), the first side line (2060) is parallel to or coincides with the central axis L1 of the backflow prevention silica gel ring (20), a broken line formed by two end points of the second side line (2061) is L2, and an included angle between a straight line projected by the broken line L2 on the central axis L1 and the central axis L1 is alpha;
the included angle alpha is 0 degrees, namely the dotted line L2 and the central axis L1 are in a space parallel relation;
at least a portion of the second edge (2061) is located on one side of the dashed line L2;
all segments of the second edge (2061) are located on one side of the dashed line L2.
2. The adjustable sealing valve according to claim 1, wherein the flexible elastic body (9) is of a hollow cylindrical structure, a first flange (91) is arranged on the periphery of the flexible elastic body (9), a first extrusion surface (94) is arranged at the middle part of the flexible elastic body (9), the first flange (91) protrudes out of the first extrusion surface (94), a pressing boss (100) is arranged on one side, close to the flexible elastic body (9), of the pressing gasket (10), and the shape of the pressing boss (100) is matched with that of the first flange (91) and that of the first extrusion surface (94).
3. An adjustable sealing valve according to claim 2, characterized in that the outer periphery of the flexible elastic body (9) is further provided with a second flange (92), a second extrusion surface (93) is arranged at the middle part of the flexible elastic body (9), the second flange (92) protrudes out of the second extrusion surface (93), a connecting boss (8) is arranged at the inner cavity of the first connector (2) of the three-way connector (1), and the shape of the connecting boss (8) is matched with that of the second flange (92) and the second extrusion surface (93).
4. An adjustable sealing valve as claimed in claim 1, characterized in that the second edge (2061) is C-shaped.
5. An adjustable sealing valve as claimed in claim 1, characterized in that the partial section of the second edge (2061) is located on one side of the imaginary line L2, and the remaining partial section of the second edge (2061) is located on the other side of the imaginary line L2.
6. An adjustable sealing valve as claimed in claim 5, characterized in that the second edge (2061) is S-shaped.
7. An adjustable sealing valve as claimed in claim 1, characterized in that the second side line (2061) is provided with a segment lying sideways of the imaginary line L2, the other segment coinciding with the imaginary line L2.
8. An adjustable sealing valve according to claim 1, characterized in that the fixed knob (5) comprises a knob body (13), a pressure release pipe (26) is arranged on the knob body (13), and a pressure release channel (22) is arranged on the top cap (7).
9. An adjustable sealing valve according to claim 8, characterized in that a pressure release silicon sheet (23) is arranged in the pressure release channel (22), and the pressure release silicon sheet (23) is provided with a pressure release opening.
10. The adjustable sealing valve of claim 9, wherein the pressure relief vent is a pressure relief slit, a pressure relief orifice, or a combination thereof.
11. A control method of an adjustable sealing valve as claimed in any one of claims 1-10, characterized in that the control method comprises two kinds, namely a control method of an adjustable sealing valve when no instrument is inserted and a control method of an adjustable sealing valve when an instrument is inserted.
12. The control method of an adjustable sealing valve according to claim 11, characterized in that the control method of an adjustable sealing valve when no instrument is inserted comprises the steps of:
the inner cavity of the flexible elastomer is completely opened in the initial state;
rotating the fixed knob, wherein the fixed knob generates displacement in a direction approaching to the flexible elastomer under the action of force rotation, and directly applies axial acting force to the mounting tube;
the mounting cylinder and the pressing washer displace along the same direction as the fixed knob under the axial acting force, and the force is transmitted to one end of the flexible elastomer, which is close to the mounting cylinder;
the flexible elastomer is elastically deformed under the extrusion of axial acting force, and part of the flexible elastomer is deformed along the radial direction and gradually fills the inner cavity of the flexible elastomer;
when the fixed knob rotates to a certain degree, the inner cavity of the flexible elastomer is in a complete sealing state;
a method of controlling an adjustable sealing valve when inserting an instrument, comprising the steps of:
pushing the instrument from the guide groove of the backflow-preventing silica gel ring;
under the acting force of the instrument, the pressure release guide piece of the backflow prevention silica gel ring deforms along the axial direction of the backflow prevention silica gel ring from the center to the edge;
the central inlet of the backflow-preventing silica gel ring is increased, an instrument enters the sealing valve and penetrates through the inner cavity of the flexible elastomer until reaching the tail end of the endoscope body;
after the pushing of the instrument is stopped, the pressure release guide piece is quickly restored to the original shape due to the elastic action of the pressure release guide piece and the arc-shaped arrangement of the pressure release guide surface, and the instrument is fixed by the pressure release guide piece of the backflow prevention silica gel ring to form a first fixed position and a first sealing position;
the fixing knob is rotated to enable the flexible elastomer to elastically deform until the flexible elastomer circumferentially tightly wraps the periphery of the instrument, so that a second fixing position and a second sealing position are formed.
13. An endoscope system, characterized in that the endoscope system comprises the adjustable sealing valve as claimed in any one of claims 1-10, an endoscope body, an operation part and an insertion part are arranged on the endoscope body, and the insertion part is of a tubular structure and is used for being inserted into a human body; the operation part is of an ergonomic design structure, the front end of the insertion part can be held and/or manipulated by a human hand to bend, the proximal end of the insertion part is connected with the distal end of the operation part, an operation channel is arranged in the insertion part, a valve interface is arranged on the operation part, the operation channel extends from the distal end of the insertion part to the valve interface along the length direction of the insertion part and is connected with the valve interface, the operation channel can be of a hollow tubular structure, and the adjustable sealing valve is arranged on the endoscope body.
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| CN202210374069.5A CN114748019B (en) | 2022-04-11 | 2022-04-11 | Adjustable sealing valve, control method and endoscope system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210374069.5A CN114748019B (en) | 2022-04-11 | 2022-04-11 | Adjustable sealing valve, control method and endoscope system |
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| CN114748019A CN114748019A (en) | 2022-07-15 |
| CN114748019B true CN114748019B (en) | 2023-07-18 |
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| CN216020928U (en) * | 2021-08-02 | 2022-03-15 | 深圳圣诺医疗设备股份有限公司 | Channel sealing device and sealing and locking liquid injection valve |
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| JP5707556B2 (en) * | 2009-12-14 | 2015-04-30 | ウラカミ合同会社 | Self-sealing flexible seal for sealing the inner surface of a pipe or a moving body in a pipe provided with the seal |
| DE102011088337A1 (en) * | 2011-12-13 | 2013-06-13 | Karl Storz Gmbh & Co. Kg | Sealing device for sealing a passage for a medical instrument |
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| US5718691A (en) * | 1994-02-28 | 1998-02-17 | Russo; Ronald D. | Gastrostomy feeding port with a positively sealing one-way entrance valve |
| WO2012161634A1 (en) * | 2011-05-20 | 2012-11-29 | Burstroem Bertil Ingvar | Device for achieving single-direction flow in channels, pipes, etc |
| CN104739358A (en) * | 2015-03-26 | 2015-07-01 | 中国人民解放军第二军医大学 | Ureteroscope urinary bladder pressure reducing device |
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| CN114748019A (en) | 2022-07-15 |
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