CN114748019A - Adjustable sealing valve, control method and endoscope system - Google Patents
Adjustable sealing valve, control method and endoscope system Download PDFInfo
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- CN114748019A CN114748019A CN202210374069.5A CN202210374069A CN114748019A CN 114748019 A CN114748019 A CN 114748019A CN 202210374069 A CN202210374069 A CN 202210374069A CN 114748019 A CN114748019 A CN 114748019A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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, a fixed knob is connected with the first interface, a connecting mechanism is connected with the second interface, a top cover cap is arranged on the fixed knob, a connecting boss is arranged at the inner cavity of the first interface of the three-way joint, and a flexible elastomer connected with the connecting boss is arranged in the inner cavity of the first interface. The adjustable sealing valve has better firmness in the operation process, and greatly improves the convenience of operation.
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 the current minimally invasive techniques for treating kidney stones mainly comprise: the three technologies are that the stone enters a ureter or a kidney through an endoscope, and different stone breaking technologies (including laser, ultrasound and air pressure trajectory) are applied to crush the stone and take out or suck out the stone, so that the aims of removing and cleaning the stone and protecting the kidney function are fulfilled.
Different urological endoscopes (including nephroscope, soft ureteroscope and hard ureteroscope) are configured with 2 to 3 operational ports. One of them interface fills the interface for rivers, with the rivers fill the headtotail of endoscope, rivers fill the system and be the essential complete component part of uropoiesis scope operation, can keep the field of vision clear, maintain the patency of uropoiesis chamber way and clear away the piece and the hemorrhage that the operation produced, the second interface is the operation channel interface, be connected with the operation channel of endoscope, during the operation, the doctor can put into different medical instruments through this operation channel and carry out a series of clinical operation, for example, can put into the seal wire when advancing the mirror operation, put into laser fiber when the rubble, get the stone with getting the stone basket after the rubble finishes.
However, the operation channel interface of the existing urinary endoscope is generally a rubber plug, and the rubber plug has the following obvious disadvantages:
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. when the water flow perfusion system is used for perfusing flushing liquid into a human body in the operation process, part of the flushing liquid leaks outwards from the hole of the rubber plug (namely a sealed perfusion loop cannot be maintained), so that the quantity of the flushing liquid actually reaching the front end of the endoscope cannot meet the requirement, the operation visual field is not clear, the operation process and quality are seriously influenced, and even the endoscope is possibly damaged by laser generated by a laser fiber due to the unclear visual field; secondly, a large amount of heat is generated in the laser lithotripsy process, and insufficient perfusion can cause that the flushing liquid can not take away enough heat, so that the temperature in a narrow ureter cavity is rapidly increased, thermal injury is generated on the ureter wall, and ureter stenosis complications occur after operation; in addition, the washing liquid at the rear end of the endoscope leaks at the interface of the operation channel, so that the risk of cross infection of surgeons exists, and particularly, infectious diseases, such as viral hepatitis B and viral hepatitis C, and the like exist;
3. The connection stability of the rubber plug and the endoscope is poor, and in the manual injection and perfusion mode, when the perfusion pressure is too high, the rubber plug falls off, so that the operation cannot be performed;
4. the rubber plug has no function of fixing the laser optical fiber, so when the flexible ureteroscope and the laser optical fiber are used for lithotripsy operation, a doctor needs to fix the laser optical fiber by hands, otherwise, in the processes of advancing, retreating, rotating and bending of the flexible ureteroscope, the laser optical fiber can retract to the flexible ureteroscope body or an operation channel, the flexible ureteroscope is damaged, and the maintenance cost of the flexible 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 optical fiber and the flexible ureteroscope relatively fixed by hands for a long time, so that the doctor is very easy to feel fatigue under long-time operation.
Disclosure of Invention
In order to solve the above problems, the present invention provides an adjustable sealing valve, a control method, and an endoscope system.
The technical scheme of the invention 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, the first interface is connected with a fixed knob, the second interface is connected with a connecting mechanism, a top cover cap is arranged on the fixed knob, a flexible elastic body 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 elastic body.
As a further description of the technical solution, the flexible elastic body is a hollow cylindrical structure, a first flange is arranged on the periphery of the flexible elastic body, a first extrusion surface is arranged in the middle of the flexible elastic body, the first flange protrudes out of the first extrusion surface, a press-fit boss is arranged on one side of the press-fit gasket close to the flexible elastic body, and the shape of the press-fit boss matches with the shape of the first flange and the shape of the first extrusion surface.
As a further description of the technical solution, a second flange is further disposed on the periphery of the flexible elastic body, a second extrusion surface is disposed in the middle of the flexible elastic body, the second flange protrudes out of the second extrusion surface, a connection boss is disposed at an inner cavity of the first connector of the three-way joint, and the connection boss is matched with the second flange and the second extrusion surface in shape.
As a further description of this technical scheme, the inside auxiliary tank that is provided with in top of fixed knob, be provided with in the auxiliary tank with top block internal connection's anti-return silica gel circle, anti-return silica gel circle is the columnar structure, anti-return silica gel circle includes first face, second face, third face, the second face does the side of anti-return silica gel circle, be equipped with sunken guide way in the first face, the inside of anti-return silica gel circle is provided with the pressure release direction seam, the pressure release direction seam certainly the surface of guide way is in the inside of anti-return silica gel circle extends to the third face, the pressure release direction seam is in the face that forms on the pressure release guide is the pressure release guide face.
As a further description of the technical solution, the pressure relief guide surface has a first side line and a second side line, the first side line is parallel to or coincident with a central axis L1 of the backflow prevention silica gel ring, a dashed line formed by two end points of the second side line is L2, and an included angle between a straight line projected by the dashed line L2 on the central axis L1 and the central axis L1 is α.
As a further description of the present technical solution, the included angle α is 0 degree, that is, the imaginary line L2 is spatially parallel to the central axis L1.
As a further description of the present technical solution, at least a partial section of the second side line is located on one side of the dashed line L2.
As a further description of the present technical solution, all the segments of the second borderline are located on one side of the dashed line L2.
As a further description of the present technical solution, the second side line has a C shape.
As a further description of the present technical solution, a partial segment of the second edge is located on one side of the dashed line L2, and the remaining partial segment of the second edge is located on the other side of the dashed line L2.
As a further description of the present technical solution, the second side line has an S-shape.
As a further description of the present technical solution, a partial section of the second boundary line is located at a side of the dashed line L2, and other partial sections coincide with the dashed line L2.
As further described in 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 cover cap.
As further description of the technical scheme, a pressure release silica gel piece is arranged in the pressure release channel and provided with a pressure release opening.
As further described in the technical scheme, the pressure relief port is a pressure relief seam, a small pressure relief 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 technical solution, a method for controlling an adjustable sealing valve when an instrument is not inserted includes the steps of:
the inner cavity of the flexible elastomer is completely opened in the initial state;
the fixed knob is rotated, and the fixed knob generates displacement towards the direction close to the flexible elastic body under the rotation of stress and directly forms axial acting force on the mounting cylinder;
the mounting cylinder and the press-fit gasket displace in the same direction as the fixed knob under the axial acting force, and the force is transmitted to one end of the flexible elastomer close to the mounting cylinder;
The flexible elastic body is elastically deformed under the extrusion of the axial acting force, and partial sections of the flexible elastic body are deformed along the radial direction and gradually fill the inner cavity of the flexible elastic body;
when the fixed knob is rotated to a certain degree, the inner cavity of the flexible elastomer is in a completely sealed state;
a method for controlling an adjustable seal valve when inserting an instrument, comprising the steps of:
pushing the instrument from the guide groove of the anti-backflow silica gel ring;
under the action of an instrument, the pressure relief guide piece of the anti-backflow silica gel ring deforms from the center to the edge along the axial direction of the anti-backflow silica gel ring;
the central inlet of the anti-backflow silica gel ring is enlarged, and instruments enter the sealing valve and penetrate through the inner cavity of the flexible elastic body until the instruments reach the tail end of the endoscope body;
after the pushing of the instrument is stopped, the pressure relief guide piece rapidly recovers to the original shape due to the elastic action of the pressure relief guide piece and the arc arrangement of the pressure relief guide surface, and the instrument is fixed by the pressure relief guide piece of the anti-backflow silica gel ring to form a first fixing part and a first sealing part;
the fixing knob is rotated to enable the flexible elastic body to generate elastic deformation until the flexible elastic body is tightly wrapped around the instrument in the circumferential direction to form a second fixing part and a second sealing part.
An endoscope system comprises the adjustable sealing valve and an endoscope body, wherein the endoscope body is provided with an operating part and an inserting part, and the inserting part is of a tubular structure and is used for being inserted into a human body; the endoscope comprises an endoscope body, an operation part, an adjustable sealing valve and an insertion part, wherein the operation part is of a human engineering design structure and can be used for being held by a human hand and/or controlling the front end of the insertion part to bend, the near end of the insertion part is connected with the far 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 to the valve interface from the far end of the insertion part 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 of being ingenious in structural design, high in practicability, easy to control, tight in waterproof performance and firm in fixing operation equipment, improving convenience of installation of the equipment with the soft head end, being good in sealing performance, effectively reducing risks of cross infection in the operation process, being good in firmness in the operation process, and greatly improving convenience of operation.
Drawings
Figure 1 is a schematic view of the overall structure of a sealing valve of the present invention;
figure 2 is a schematic cross-sectional view of one of the views of the sealing valve of the present invention;
figure 3 is a schematic cross-sectional view of another view of the sealing valve of the present invention;
FIG. 4 is an enlarged partial schematic view of the flexible elastomer of the present invention;
figure 5 is a schematic view of a first angular view of the anti-backflow silicone ring of the sealing valve of the present invention;
fig. 6 is a second perspective view of the anti-backflow silicone ring of the sealing valve of the present invention;
fig. 7 is a schematic perspective view of a back flow prevention silicone ring of the sealing valve of the present invention;
fig. 8 is a schematic view of the back flow prevention principle of the back flow prevention silicone ring of the sealing valve of the present invention;
figure 9 is a schematic view of the manner in which the sealing valve of the present invention is used;
fig. 10 is a schematic view of a sealing valve of the present invention in a first state of use with no instrument inserted;
fig. 11 is a schematic view of a sealing valve of the present invention in a second use condition with no instrument inserted;
fig. 12 is a schematic view of a third state of use of the sealing valve of the present invention without instrument insertion;
fig. 13 is a schematic flow chart of a first control mode of the sealing valve of the present invention without instrument insertion;
fig. 14 is a schematic view of a sealing valve of the present invention in a first state of use with an instrument inserted;
Fig. 15 is a schematic view of a second state of use of the sealing valve of the present invention with the insertion of an instrument;
fig. 16 is a schematic flow chart of a second control strategy for the sealing valve of the present invention with no instrument inserted.
In the figure, 1, a three-way joint; 2. a first interface; 3. a second interface; 4. a third interface; 5. fixing the knob; 6. a connecting mechanism; 7. a top cap; 8. connecting the bosses; 9. a flexible elastomer; 91. a first flange; 92. a first flange; 93. a second extrusion surface; 94. a first extrusion surface; 95. a flexible elastomer lumen; 10. pressing a gasket; 100. pressing the bosses; 12. an external thread; 13. a knob body; 14. mounting the cylinder; 15. a mounting cavity; 16. an internal thread; 17. an auxiliary block; 18. clamping the boss; 19. an auxiliary groove; 20. a backflow-preventing silica gel ring; 200. a first side; 201. a second face; 202. a third surface; 203. a guide groove; 204. pressure relief guide seams; 205. a pressure relief guide; 2020. a boss; 206. a pressure relief guide surface; 2060. a first edge line; 2061. a second edge line; 21. sealing the silica gel ring; 22. a pressure relief channel; 23. a pressure relief silica gel sheet; 24. connecting a lock; 25. connecting external threads; 26. a pressure relief duct.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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 expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements are communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.
The invention is described in detail with reference to the accompanying drawings, as shown in fig. 1, an adjustable sealing valve includes a three-way joint 1, the three-way joint 1 includes a first port 2, a second port 3, and a third port 4, a fixing knob 5 is connected to the first port 2, the fixing knob 5 is described below, the fixing knob 5 includes 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 port 2, an installation cavity 15 is formed between the inside of the knob main body 13 and the outside of the installation cylinder 14, in order to facilitate connection of the first port 2 and the fixing knob 5, an internal thread 16 is arranged in the installation cavity 15, the first port 2 is arranged in the installation cavity 15, and the first port and the fixing knob are connected with the internal thread 16 through an external thread 12.
The three-way connector 1 is located an inner cavity of the first interface 2 is provided with a connecting boss 8, the inner cavity of the first interface 2 is provided with a flexible elastic body 9 connected with the connecting boss 8, the middle part of the flexible elastic body 9 is an instrument through hole, the flexible elastic body 9 also has good sealing performance when fixing an instrument, and the following detailed description is given to the flexible elastic body 9:
referring to fig. 4, fig. 4 shows a partially enlarged schematic view of the flexible elastic body 9.
The flexible elastic body 9 is substantially a hollow cylindrical structure, a first flange 91 and a second flange 92 are arranged on the periphery of the flexible elastic body 9, a first extrusion surface 94 and a second extrusion surface 93 are arranged in the middle 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 press-fit 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 figures, the cross-section of the first flange 91 and the second flange 92 is in a regular concave right-angle shape, and the cross-sectional shapes of the flexible elastic body 9 side and the connecting boss 8 are correspondingly arranged in a convex right-angle shape. The benefits of this arrangement are explained 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 forced to rotate to generate displacement in a direction close to the flexible elastic body 9, and an axial acting force is directly formed on the installation cylinder 14, the installation cylinder 14 and the pressing gasket 10 are displaced in the same direction as the fixing knob 5 under the axial acting force, the pressing boss 100 of the pressing gasket 10 presses the first pressing surface 94 and transmits the force to one end, close to the installation cylinder 14, of the flexible elastic body 9, elastic deformation is generated between the first pressing surface 94 and the second pressing surface 93 under the extrusion of the axial acting force, the elastic deformation is generated 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.
Under the action of the press-fit gasket 10, the thickness of the first flange 91 in the axial direction is reduced, while the thickness in the radial direction is increased, at this time, the first flange 91 is respectively in close contact with the inner wall of the installation cylinder 14 and the axial annular surface of the press-fit gasket 10 in the radial direction, and is in close contact with the radial annular surface of the press-fit gasket 10 in the axial direction, so that better sealing performance is formed. A better sealing is also obtained at the second flange 92, the principle being the same as that of the first flange 91, and the description is omitted.
As can be seen from the above description, the flexible elastic body 9, the press-fit gasket 10 and the connecting boss 8 form a relatively good sealing effect, and when the backflow liquid flows back to these two places, the backflow liquid cannot leak into the mounting cavity 15, and thus cannot overflow out of the sealing valve.
In another embodiment, the first flange 91 has a cross-sectional shape of "Z" and a reverse "Z" respectively at the left and right sides, and the corresponding press-fit washer 10 has a cross-sectional shape of "Z" and a reverse "Z" respectively to fit with the cross-sectional shape, and the flexible elastic body 9 is fixedly connected with the press-fit washer 10 (equivalent to the press-fit washer 10 is buckled on the flexible elastic body 9), and other parts are implemented in the same manner as the above-mentioned embodiment. With this arrangement, the sealing performance of the joint of the flexible elastomer 9 and the press-fit gasket 10 is more excellent.
In a preferred embodiment, the flexible elastic body 9 is made of high-elasticity medical grade rubber, which can endure great physical deformation and can be quickly recovered from great deformation to the shape during molding, so that the situation of blockage caused by the failure of recovery after deformation can be avoided during the operation, one end of the flexible elastic body 9, which is far away from the connecting boss 8, is provided with a press gasket 10, and the press gasket 10 is made of polytetrafluoroethylene polymer material, which has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, is hardly dissolved in all solvents, and meanwhile, the friction coefficient of polytetrafluoroethylene is extremely low, so that the press gasket 10 made of polytetrafluoroethylene can well guarantee the sealing performance after press.
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, the material is transparent medical grade PC (Polycarbonate), Polycarbonate (PC), Polycarbonate for short, and is thermoplastic resin with a molecular main chain containing a chain link of O-R-O-CO, the plastic has the characteristics of high transparency, light weight, impact resistance, heat insulation, flame retardancy, aging resistance and the like, is high-tech, excellent comprehensive performance, energy-saving and environment-friendly, and can prevent joints from loosening and falling off in the operation process by connecting the connecting lock 24 with the interface on the endoscope body.
The third interface 4 is connected to an external perfusion system (not shown in the figure), in order to realize the connection of the third interface 4, an external connection thread 25 may be provided on the outer side of the third interface 4, of course, other connection manners such as a buckle may also be adopted, and in order to ensure the sealing performance of the connection place, a sealing element may also be provided on the third interface 4, and the sealing element may be a sealing ring or the like.
In addition, a top cap 7 is arranged on the fixing knob 5, in order to facilitate the connection between the fixing knob 5 and the top cap 7, an auxiliary groove 19 is arranged inside the top end of the fixing knob 5, and an anti-backflow silica gel ring 20 connected with the inside of the top cap 7 is arranged inside the auxiliary groove 19.
The structure of the backflow preventing silicone ring 20 is described in detail below:
referring to fig. 5 to 8, the anti-backflow silicone rubber ring 20 is a columnar structure, and includes a first surface 200, a second surface 201, and a third surface 202. A concave guide groove 203 is arranged on the first surface 200; the second surface 201 is a side surface of the backflow-preventing silicone ring 20 and is distributed along the circumferential direction of the backflow-preventing silicone ring 20. Optionally, the first face 200 and the third face 202 are both planar, and the boss 2020 is disposed on the third face 202.
The backflow preventing silicone ring 20 is divided into a plurality of partially connected pressure release guides 205 by at least one pressure release guide slit 204, and the pressure release guide slit 204 extends from the surface of the guide groove 203 from the inside of the backflow preventing silicone ring 20 to the third face 202, preferably, to the surface of the boss 2020 of the third face 202. The pressure release guide 205 has a pressure release guide surface 206 formed on a side surface thereof due to the provision of the pressure release guide slit 204.
Referring to fig. 7, the pressure relief guide surface 206 has a first side line 2060 and a second side line 2061. The first side line 2060 is parallel to the central axis L1 of the anti-reflux silicone ring 20, and preferably coincides with the central axis L1. The dotted line formed by the two end points of the second side line 2061 is L2, and the line projected on L1 by L2 and L1 may have an included angle α, in a preferred embodiment, the included angle α is 0, that is, L2 and the central axis L1 are in a parallel relation in space.
Regarding 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 imaginary line L2. In one embodiment, all segments of the second sideline 2061 are located on one side of the dashed line L2, and preferably, the second sideline 2061 is C-shaped; in another embodiment, a segment of the second side line 2061 is located on one side of the imaginary line L2, and the remaining segment of the second side line 2061 is located on the other side of the imaginary line L2, and preferably, the second side line 2061 has an S-shape (not shown in the figure); in other embodiments, the second boundary line 2061 may coincide with the dashed line L2, except that the partial segment is located at the side of the dashed line L2.
Referring to fig. 2, when the backflow liquid flows back from the operation channel of the endoscope body to the sealing valve, the backflow liquid passes through the second port 3 and the inner cavity of the installation cylinder 14 and reaches the backflow silicone ring 20, and under the action of pressure, the backflow liquid will press the third face 202 of the backflow silicone ring 20.
Because the pressure relief guide slit 204 exists, the backflow silicone rubber ring 20 is not in a completely sealed state, and when the pressure relief guide slit 204 is arranged in a vertical direction (that is, the first side line 2060 and the second side line 2061 are 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 easily flows 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, according to the solution of the present invention, when the backflow liquid presses the third surface 202 of the backflow silicone rubber ring 20 under the pressure, all or part of the pressure-relief guide surface 206 deviates from the vertical surface, the pressure-relief guide surface 206 and the flowing direction of the backflow liquid form a certain included angle, the pressure-relief guide surface 206 will generate backflow resistance to the backflow liquid, and the backflow resistance will hinder the backflow of the liquid. In addition, the arrangement prolongs the length of the flowing path of the backflow liquid, further increases the difficulty of the backflow liquid flowing out of the sealing valve, and enhances the sealing performance of the sealing valve.
In addition, the pressure release guide surface 206 of the present invention is provided with an irregularly shaped arc surface, and particularly, when the pressure release guide surface 206 of one of the pressure release guides 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 fitted therewith. After pushing the instrument into the reflux silica gel ring 20 and stopping, the shape of the reflux silica gel ring 20 is gradually restored to the original shape under the action of the elastic force. Compared with the pressure relief guide slit 204 arranged in the vertical direction, the arrangement of the invention can ensure that the backflow silica gel ring 20 is completely restored to the original shape matched with the concave cambered surface and the convex cambered surface, and the restoration speed is higher. This not only increases the sealing properties but also provides better fixation of the instrument.
Referring to fig. 1 and 2, in order to facilitate the operation of the rotating body 13, a plurality of auxiliary blocks 17 distributed circumferentially are arranged outside the rotating body 13, a clamping boss 18 for facilitating the installation of the top cap 7 is arranged in the middle of the outside of the rotating body, a sealing silica gel ring 21 is arranged on the clamping boss 18, and the sealing silica gel ring 21 is in internal contact with the top cap 7.
Referring to fig. 3, a pressure relief channel 22 is arranged on the top cap 7, a pressure relief component 23 is arranged in the pressure relief channel 22, the pressure relief component 23 is preferably a silicone sheet, a pressure relief opening is arranged on the pressure relief component 23, and the shape of the pressure relief opening may be a pressure relief seam, or a pressure relief small hole, or a combination of the pressure relief small hole and the pressure relief seam, or other shapes that may occur to those skilled in the art. In the embodiment shown in fig. 3, the pressure relief vent has a cross slit shape. The knob body 13 is provided with a pressure relief pipeline 26. Through the pressure relief opening, when the pressure of the liquid inside 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 opening, so that the too high pressure of the liquid inside the adjustable sealing valve is relieved, otherwise, the too high pressure will squeeze the anti-backflow silicone ring 20, causing the liquid to flow out from the pressure relief guide slit 204 of the anti-backflow silicone ring 20, and the pressure relief guide slit 204 is directed to medical workers, which will cause cross infection. And the setting of sealing silica gel circle 21 has guaranteed that liquid can't spill over from sealing silica gel circle 21, has strengthened sealing performance. Specifically, before the instrument is inserted, there may be extreme conditions such as poor sealing performance of the flexible elastic body 9, and at this time, the inner cavity of the mounting cylinder 14 is already filled with liquid, and after the instrument is inserted, the liquid inside the adjustable sealing valve will be squeezed by the instrument, and the squeezed liquid will enter the pressure relief channel 22 from the pressure relief pipeline 26, that is, the pressure relief channel 22 stores a part of the liquid with overpressure, and the pressure relief channel 22 serves as a buffer for the liquid. In more extreme cases, the liquid is too much over-pressurized, and the liquid reaches the pressure relief part 23, and when the liquid pressure is increased, the over-pressurized liquid will overflow from the preset pressure relief port. In order to further prevent the risk of cross infection during the operation, the direction of the pressure relief channel 22 can be adjusted by rotating the top cap 7, so that the pressure relief opening does not face the medical workers, and optionally, a collecting device can be arranged at the pressure relief opening for collecting the backflow 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 screwed to obtain good holding power, the instrument is prevented from being loosened in the operation, the diameter of an instrument channel is phi 3.2mm, the maximum size of an adaptive instrument is 9.6Fr, good perfusion flow 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 the endoscope, and the medical instrument can be adapted to most urinary endoscopes (including a nephroscope, a soft ureteroscope and a hard ureteroscope) in the market.
In a preferred embodiment, the anti-backflow silicone rubber ring 20, the sealing silicone rubber ring 21 and the pressure-releasing silicone sheet 23 are soft silicone rubber products, and the selected material is medical silicone rubber, which has good biocompatibility, no irritation, no toxicity, no anaphylaxis, little rejection reaction of organisms, good physicochemical characteristics, can keep the original elasticity and softness during use, is not degraded, and is a fairly stable inert substance.
The specific structure of the adjustable sealing valve is described in detail above, and the control method of the adjustable sealing valve, which can have at least two control methods, will be described in detail below:
The control method comprises the following steps: when the instrument is not 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 forced to rotate to generate displacement in a direction close to the flexible elastic body 9, and an axial acting force is directly formed on the installation cylinder 14, the installation cylinder 14 and the press-fit gasket 10 are displaced in the same direction as the fixing knob 5 under the axial acting force, the press-fit boss 100 of the press-fit gasket 10 presses the first extrusion surface 94 and transmits the force to one end, close to the installation cylinder 14, of the flexible elastic body 9, the part, located between the first extrusion surface 94 and the second extrusion surface 93, of the flexible elastic body 9 is elastically deformed under the extrusion of the axial acting force and is deformed in the radial direction and gradually filled in the inner cavity 95 of the flexible elastic body, and when the fixing knob 5 is rotated to a certain degree, the inner cavity 95 of the flexible elastic body is in a completely sealed state.
And a second control method comprises the following steps: when inserting the instrument, please refer to fig. 14-16. When pushing the instrument to the guide groove 203 of the anti-backflow silica gel ring 20 of the adjustable sealing valve, under the action of the instrument, the pressure relief guide 205 of the anti-backflow silicone ring 20 deforms from the center to the edge along the axial direction of the anti-backflow silicone ring 20, the central inlet of the anti-backflow silicone ring 20 is enlarged, the instrument enters the adjustable sealing valve, penetrates through the inner cavity 95 of the flexible elastic body until reaching the tail end of the endoscope body and then stops, after stopping the propelling movement of the instrument, the pressure relief guide piece 205 is rapidly recovered to the original shape due to the elastic action of the pressure relief guide piece 205 and the arrangement of the cambered surface of the pressure relief guide surface 206, the instrument is fixed by the pressure relief guide piece 205 of the anti-backflow silica gel ring 20 to form a first fixing part and a first sealing part, the flexible elastic body 9 is elastically deformed by rotating the fixing knob 5 until the periphery of the flexible elastic body 9 tightly wraps the instrument, and a second fixing part and a second sealing part are formed. The first fixing part and the second fixing part 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 sealing position and the second sealing position form secondary sealing, and liquid cannot leak from the anti-backflow silicon rubber ring 20. When reflux liquid is actually present, the pressure relief channel 22 can be oriented away from the healthcare worker to prevent cross-contamination.
In addition, the invention also provides an endoscope system, and the endoscope system is referred to fig. 9. The endoscope system comprises the adjustable sealing valve and an endoscope body, wherein the endoscope body is provided with an operating part and an inserting part. 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 and can be used for holding by a hand and/or operating the front end of the insertion part to bend; the proximal end of the insertion portion and the distal end of the operation portion are connected. The operation channel is arranged in the insertion part, the valve interface is arranged on the operation part, the operation channel extends to the valve interface from the far end of the insertion part 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 connecting lock 24 of the adjustable sealing valve is fixedly connected with the valve interface on the operating portion.
In an embodiment not shown in the figures, the third port 4 of the adjustable sealing valve is connected to the saline bag by means of a hose, from which saline flows under the action of gravity towards the adjustable sealing valve and out along the operating channel from the distal end of the insertion portion. If no instrument is inserted during the operation, the fixing knob 5 of the adjustable sealing valve is screwed along the clockwise direction, and the direction of the pressure relief channel 22 is adjusted to be not towards the medical workers; if an instrument needs to be inserted in the operation process, the fixing knob 5 is unscrewed in the counterclockwise direction, the instrument is inserted into the adjustable sealing valve and the endoscope body from the anti-backflow silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches the designated position, the fixing knob 5 of the adjustable sealing valve is screwed in the clockwise direction again, so that better sealing performance and instrument stability can be realized; when the instrument needs 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 drawings, a perfusion interface is further arranged on the operation part of the endoscope body, the operation channel has a Y-shaped structure, the operation channel extends from the far end of the insertion part to the front of the valve interface along the length direction of the insertion part, is divided into two parts, one end of the operation channel is connected with the valve interface, the other end of the operation channel is connected with the perfusion interface, the perfusion interface is connected with a saline bag through a hose, and the saline flows to the adjustable sealing valve from the hose under the action of gravity and flows out from the far end of the insertion part along the operation channel; if no instrument is inserted during the operation, the fixing knob 5 of the adjustable sealing valve is screwed along the clockwise direction, and the direction of the pressure relief channel 22 is adjusted to be not towards the medical staff; if an instrument needs to be inserted in the operation process, the fixing knob 5 is unscrewed counterclockwise, the instrument is inserted into the adjustable sealing valve and the endoscope body from the anti-backflow silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches the specified position, the fixing knob 5 of the adjustable sealing valve is screwed clockwise again, so that better sealing performance and instrument stability can be realized; when the instrument needs 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, a perfusion interface is further arranged on the operating part of the endoscope body, and correspondingly, a perfusion channel is further arranged in the insertion part and extends from the far end of the insertion part to the valve interface along the length direction of the insertion part, the perfusion channel can be a hollow tubular structure, the perfusion interface is connected with a saline bag through a hose, and saline flows to the adjustable sealing valve from the hose under the action of gravity and flows out from the far end of the insertion part along the perfusion channel; if no instrument is inserted during the operation, the fixing knob 5 of the adjustable sealing valve is screwed along the clockwise direction, and the direction of the pressure relief channel 22 is adjusted to be not towards the medical staff; if an instrument needs to be inserted in the operation process, the fixing knob 5 is unscrewed counterclockwise, the instrument is inserted into the adjustable sealing valve and the endoscope body from the anti-backflow silica gel ring 20 of the adjustable sealing valve, and when the instrument reaches the specified position, the fixing knob 5 of the adjustable sealing valve is screwed clockwise again, so that better sealing performance and instrument stability can be realized; when the instrument needs 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 the advantages of tight water resistance and firmness in fixing operation instruments in use, and meanwhile, in the instrument operation process, the excellent operation experience can be achieved by adjusting the fixing knob 5.
This adjustable seal valve, structural design is ingenious, and the practicality is stronger, has the characteristics of easy nature controlled, tight waterproof nature and the firm nature of fixed operation apparatus, utilizes this adjustable seal valve, has improved the convenience of the apparatus installation that has soft head end, and the leakproofness is better simultaneously, can effectively reduce the risk that the cross infection takes place among the operation process, and in addition, this adjustable seal valve is better at operation in-process fastness, very big improvement the convenience of operation.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (18)
1. The adjustable sealing valve is characterized by comprising a three-way joint (1), wherein the three-way joint (1) comprises a first interface (2), a second interface (3) and a third interface (4), the first interface (2) is connected with a fixing knob (5), the second interface (3) is connected with a connecting mechanism (6), a top cap (7) is arranged on the fixing knob (5), a flexible elastic body (9) connected with a connecting boss (8) is arranged in an inner cavity of the first interface (2), and the flexible elastic body (9) is far away from the connecting boss (8) and one end of the connecting boss (8) is provided with a press-fit gasket (10).
2. The adjustable sealing valve according to claim 1, wherein the flexible elastic body (9) is a hollow cylindrical structure, a first flange (91) is provided on the outer periphery of the flexible elastic body (9), a first pressing surface (94) is provided at the middle portion of the flexible elastic body (9), the first flange (91) protrudes from the first pressing surface (94), a pressing boss (100) is provided on one side of the pressing gasket (10) close to the flexible elastic body (9), and the shape of the pressing boss (100) matches with the shape of the first flange (91) and the shape of the first pressing surface (94).
3. The adjustable sealing valve according to claim 2, wherein a second flange (92) is further provided at the outer periphery of said flexible elastic body (9), a second pressing surface (93) is provided at the middle portion of said flexible elastic body (9), said second flange (92) is provided to protrude from said second pressing surface (93), said three-way joint (1) is provided with a connecting boss (8) at the inner cavity of said first port (2), and said connecting boss (8) is matched with the shapes of said second flange (92) and said second pressing surface (93).
4. The adjustable sealing valve according to claim 3, wherein an auxiliary groove (19) is arranged inside the top end of the fixing knob (5), an anti-backflow silicone ring (20) connected with the top cap (7) is arranged inside the auxiliary groove (19), the anti-backflow silicone ring (20) is of a columnar structure, the anti-backflow silicone ring (20) comprises a first surface (200), a second surface (201) and a third surface (202), the second surface (201) is a side surface of the anti-backflow silicone ring (20), a concave guide groove (203) is arranged on the first surface (200), a pressure relief guide slit (204) is arranged inside the anti-backflow silicone ring (20), the pressure relief guide slit (204) extends from the surface of the guide groove (203) to the third surface (202) inside the anti-backflow silicone ring (20), the surface of the pressure release guide slit (204) formed on the pressure release guide (205) is a pressure release guide surface (206).
5. The adjustable sealing valve according to claim 4, wherein said pressure relief guide surface (206) has a first sideline (2060) and a second sideline (2061), said first sideline (2060) is parallel to or coincident with the central axis L1 of said anti-backflow silicone ring (20), the imaginary line formed by the two end points of said second sideline (2061) is L2, and the included angle between the straight line of the projection of said imaginary line L2 on said central axis L1 and said central axis L1 is α.
6. The adjustable sealing valve according to claim 5, wherein said included angle α is 0 degrees, i.e. said imaginary line L2 is in a spatially parallel relationship with said central axis L1.
7. The adjustable sealing valve according to claim 5, characterized in that at least a partial section of said second borderline (2061) is located on one side of said imaginary line L2.
8. The adjustable sealing valve according to claim 7, characterized in that all segments of said second borderline (2061) are located at one side of said dashed line L2.
9. The adjustable sealing valve according to claim 8, characterized in that said second sideline (2061) is C-shaped.
10. The adjustable sealing valve according to claim 7, characterized in that a partial section of said second sideline (2061) is located on one side of said imaginary line L2, and the remaining partial section of said second sideline (2061) is located on the other side of said imaginary line L2.
11. The adjustable sealing valve according to claim 10, wherein said second sideline (2061) is S-shaped.
12. The adjustable sealing valve according to claim 7, characterized in that part of said second borderline (2061) is located to the side of said imaginary line L2, the other part of said second borderline coinciding with said imaginary line L2.
13. The adjustable sealing valve according to claim 1, characterized in that said fixed knob (5) comprises a knob body (13), said knob body (13) being provided with a pressure relief duct (26), said top cap (7) being provided with a pressure relief channel (22).
14. The adjustable sealing valve according to claim 13, characterized in that a pressure relief silicone sheet (23) is arranged in said pressure relief channel (22), said pressure relief silicone sheet (23) being provided with a pressure relief opening.
15. The adjustable sealing valve according to claim 14, wherein said pressure relief port is a pressure relief slit, a pressure relief orifice or a combination thereof.
16. The control method of the adjustable sealing valve is characterized by comprising 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.
17. The method for controlling an adjustable sealing valve according to claim 16, wherein the method for controlling the adjustable sealing valve without inserting an instrument comprises the steps of:
the inner cavity of the flexible elastomer is completely opened in the initial state;
the fixed knob is rotated, and the fixed knob generates displacement towards the direction close to the flexible elastic body under the rotation of stress and directly forms axial acting force on the mounting cylinder;
The mounting cylinder and the press-fit gasket are displaced in the same direction as the fixed knob under the axial action force, and the force is transmitted to one end of the flexible elastomer close to the mounting cylinder;
the flexible elastic body is elastically deformed under the extrusion of axial acting force, and partial sections of the flexible elastic body are deformed along the radial direction and gradually filled in the inner cavity of the flexible elastic body;
when the fixed knob is rotated to a certain degree, the inner cavity of the flexible elastomer is in a completely sealed state;
a method for controlling an adjustable sealing valve during insertion of an instrument, comprising the steps of:
pushing the instrument from the guide groove of the anti-backflow silica gel ring;
under the action of an instrument, the pressure relief guide piece of the anti-backflow silica gel ring deforms along the axial direction of the anti-backflow silica gel ring from the center to the edge;
the central inlet of the anti-backflow silica gel ring is enlarged, and an instrument enters the sealing valve, passes through the inner cavity of the flexible elastic body and stops after reaching the tail end of the endoscope body;
after the pushing of the instrument is stopped, the pressure relief guide piece rapidly recovers to the original shape due to the elastic action of the pressure relief guide piece and the arc arrangement of the pressure relief guide surface, and the instrument is fixed by the pressure relief guide piece of the anti-backflow silica gel ring to form a first fixing part and a first sealing part;
The fixing knob is rotated to enable the flexible elastic body to generate elastic deformation until the flexible elastic body is tightly wrapped around the instrument in the circumferential direction to form a second fixing part and a second sealing part.
18. An endoscope system is characterized by comprising the adjustable sealing valve and an endoscope body, wherein the endoscope body is provided with an operating part and an inserting part, and the inserting part is of a tubular structure and is used for being inserted into a human body; the endoscope comprises an endoscope body, an operation part, an adjustable sealing valve and an insertion part, wherein the operation part is of a human engineering design structure and can be used for being held by a human hand and/or controlling the front end of the insertion part to bend, the near end of the insertion part is connected with the far 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 to the valve interface from the far end of the insertion part 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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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20120313326A1 (en) * | 2009-12-14 | 2012-12-13 | Urakami Llc | Self-sealing flexible seal for sealing inner surface of tube and movable body for inside tube equipped with said seal |
| US20130150792A1 (en) * | 2011-12-13 | 2013-06-13 | Jose Ramon Alonso | Sealing Means For The Sealing Of An Introduction Facility For A Medical Instrument |
| 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 |
| CN211609734U (en) * | 2019-11-28 | 2020-10-02 | 杭州无创光电有限公司 | Prevent return valve and endoscope pipe |
| CN112867428A (en) * | 2018-11-02 | 2021-05-28 | 波士顿科学有限公司 | Internal seal for biopsy cap |
| CN113712490A (en) * | 2021-09-30 | 2021-11-30 | 宁波海泰科迈医疗器械有限公司 | Distal end piece of an access assembly for an endoscope, access assembly and method of use thereof |
| 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 |
-
2022
- 2022-04-11 CN CN202210374069.5A patent/CN114748019B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5718691A (en) * | 1994-02-28 | 1998-02-17 | Russo; Ronald D. | Gastrostomy feeding port with a positively sealing one-way entrance valve |
| US20120313326A1 (en) * | 2009-12-14 | 2012-12-13 | Urakami Llc | Self-sealing flexible seal for sealing inner surface of tube and movable body for inside tube equipped with said seal |
| WO2012161634A1 (en) * | 2011-05-20 | 2012-11-29 | Burstroem Bertil Ingvar | Device for achieving single-direction flow in channels, pipes, etc |
| US20130150792A1 (en) * | 2011-12-13 | 2013-06-13 | Jose Ramon Alonso | Sealing Means For The Sealing Of An Introduction Facility For A Medical Instrument |
| 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 |
| CN112867428A (en) * | 2018-11-02 | 2021-05-28 | 波士顿科学有限公司 | Internal seal for biopsy cap |
| CN211609734U (en) * | 2019-11-28 | 2020-10-02 | 杭州无创光电有限公司 | Prevent return valve and endoscope pipe |
| 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 |
| CN113712490A (en) * | 2021-09-30 | 2021-11-30 | 宁波海泰科迈医疗器械有限公司 | Distal end piece of an access assembly for an endoscope, access assembly and method of use thereof |
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| CN114748019B (en) | 2023-07-18 |
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