CN117100196B - Isolation valve assembly of endoscope - Google Patents
Isolation valve assembly of endoscope Download PDFInfo
- Publication number
- CN117100196B CN117100196B CN202311385227.8A CN202311385227A CN117100196B CN 117100196 B CN117100196 B CN 117100196B CN 202311385227 A CN202311385227 A CN 202311385227A CN 117100196 B CN117100196 B CN 117100196B
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- Prior art keywords
- supporting part
- housing
- pressure
- waterproof cap
- channel
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Links
- 238000002955 isolation Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000001125 extrusion Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 25
- 238000003825 pressing Methods 0.000 abstract description 15
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000002674 endoscopic surgery Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00131—Accessories for endoscopes
- A61B1/00137—End pieces at either end of the endoscope, e.g. caps, seals or forceps plugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—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
Abstract
The invention discloses an isolation valve assembly of an endoscope, which comprises a shell, an inner cavity and a two-way valve arranged in the inner cavity, wherein the two-way valve comprises a first supporting part, a sealing part and a second supporting part which are sequentially connected along the axial direction, a first channel is arranged in the first supporting part, a second channel is arranged in the second supporting part, the sealing part comprises two pressure-bearing parts respectively arranged at the upper side and the lower side, the outer wall of the sealing part and the inner wall of the shell are surrounded to form a cavity, the second supporting part comprises a supporting part body, two pressing parts respectively arranged at the upper side and the lower side of the supporting part body, and two notches respectively arranged at the left side and the right side of the supporting part body, the cavity is communicated with the second channel, the cavity and the first channel are sealed in a blocking way through the first supporting part, and the inner wall of the shell presses the pressing parts, so that at least part of the inner walls of the two pressure-bearing parts are mutually abutted against each other and the first channel and the second channel are blocked. The invention has the advantages of good sealing effect and difficult failure of the sealing structure.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an isolation valve assembly of an endoscope.
Background
In the use of medical equipment, especially in an endoscopic surgery, a guide wire is generally used for penetrating a human body channel, then the endoscope is guided by the guide wire to extend into the human body channel so as to reduce the damage of direct insertion of the endoscope into a human body organ, an instrument channel for the passage of a surgical instrument is arranged in the endoscope, after the endoscope extends into the human body channel, the guide wire is required to be taken out through the instrument channel, then the surgical instrument extends into the human body channel through the instrument channel to perform surgery (such as calculus removal surgery), and the surgical instrument and the endoscope are taken out from the human body channel after the surgery is completed. The instrument channel in the endoscope needs to be sealed through the valve, so that high-pressure liquid in the human body channel is prevented from flowing out of a human body through the instrument channel, polluting an operating table, surgical equipment or other human tissues, and when a guide wire needs to be taken out or the surgical instrument needs to be inserted, the valve is opened for the guide wire or the surgical instrument to pass through. In the prior art, when the tail of the instrument channel is sealed by the liquid valve or the one-way valve, the instrument channel is sealed by the liquid valve before the surgical instrument is inserted into the instrument channel, the liquid valve needs to be manually opened when the guide wire is required to be taken out or the surgical instrument is required to be inserted, the operation is relatively inconvenient, and the operation needs to be carefully performed, the guide wire or the surgical instrument is difficult to quickly pass through after the liquid valve is opened, a large amount of liquid flows out of the instrument channel in the process, certain pollution is still caused to the surgical table, and the overall sealing effect of the liquid valve is reduced. When the one-way valve is used for sealing, only one-way sealing and one-way conduction can be realized, and the insertion direction of taking out the guide wire or inserting the surgical instrument is opposite, so that the insertion operation in one direction is difficult to realize, the operation difficulty is increased to a certain extent, and the problem that the one-way valve is easy to cause sealing failure after being used for many times is solved.
Disclosure of Invention
The invention provides an isolation valve assembly of an endoscope, which aims to overcome the defects that a valve used in the endoscope in the prior art is poor in sealing effect and easy to cause sealing failure after being used for many times, and has the advantages of good sealing effect and difficult failure of a sealing structure.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an isolation valve subassembly of endoscope, includes the shell, set up the inner chamber in the shell and set up in the bi-directional valve of inner chamber, bi-directional valve includes first supporting part, sealing part and the second supporting part that connects gradually along the axial, be equipped with first passageway in the first supporting part, be equipped with the second passageway in the second supporting part, sealing part and second supporting part all have elasticity, sealing part is including setting up two pressure-bearing parts in upper and lower both sides respectively, two pressure-bearing parts are crooked inwards, the outer wall of sealing part and the inner wall of shell surround and form the cavity, second supporting part includes the supporting part body, sets up two clamp parts in the upper and lower both sides of supporting part body respectively to and set up two breach in the supporting part body left and right sides respectively, the cavity with second passageway intercommunication, the cavity with first passageway cuts off sealedly through first supporting part, the inner wall extrusion of shell the at least partial inner wall of two pressure-bearing parts supports tightly each other and cuts off first passageway and second passageway.
According to the technical scheme, the isolation valve assembly is used for an endoscope, the first channel of the two-way valve faces inwards, the guide wire penetrates into the human body channel in an endoscopic operation, then the tail of the guide wire penetrates into the instrument channel from the head of the endoscope, when the tail of the guide wire contacts the pressure bearing parts, the guide wire continues to extend into the guide wire, the pressure bearing parts are extruded outwards by the guide wire tail, the two pressure bearing parts are mutually far away to form a gap allowing the guide wire to pass through, after the guide wire tail extends out of the human body, the endoscope extends into the human body channel under the guidance of the guide wire, then the guide wire is pulled outwards, after the guide wire is pulled out, the two-way valve can close the instrument channel in the endoscope, high-pressure liquid in the human body can be prevented from flowing out of the human body through the endoscope, when the surgical instrument needs to be inserted into the instrument channel in the endoscope, when the surgical instrument is contacted with the pressure bearing parts, the surgical instrument continues to be inserted inwards, the pressure bearing parts are extruded outwards, the two pressure bearing parts are mutually far away, a gap allowing the surgical instrument to pass through is formed, and the surgical instrument can pass through the isolation valve to enter the human body channel for observation or taking out. During operation or after the operation instrument is used, the operation instrument can be pulled out, and the two pressure-bearing parts can separate and seal the first channel from the second channel under the action of self elasticity and liquid pressure. In this application scheme, because two pressure-bearing portions and two pressure-bearing portions all set up upper and lower both sides, when the inner wall extrusion of shell two pressure-bearing portions, can make two pressure-bearing portions also be close to each other and extrude, seal cuts off first passageway and second passageway, even two pressure-bearing portions can't hug closely under the condition of not receiving external force owing to material fatigue strength influence, also can make two pressure-bearing portions support tightly each other through the extrusion effect of shell inner wall. Because the two pressure-bearing parts bend inwards, and the two pressure-bearing parts separate the first channel and the second channel, when the cavity is filled with high-pressure liquid, the inner side pressure and the outer side pressure of the two pressure-bearing parts close to one side of the second channel are balanced, the high-pressure liquid does not exist in the first channel, the inner side pressure of the two pressure-bearing parts close to one side of the first channel is smaller than the outer side pressure, the high-pressure liquid can inwards squeeze the pressure-bearing parts, and the sealing effect of the two pressure-bearing parts on the first channel and the second channel is further improved. The two notches can enable the cavity to be communicated with the second channel, the inner wall of the shell can be prevented from extruding the left side and the right side of the first supporting portion, and the extrusion force on the left side and the right side can be prevented from enabling the two pressure-bearing portions to deform outwards.
Preferably, the side wall of the supporting part body is provided with a through hole or a through groove, so that the cavity outside the supporting part body is directly communicated with the second channel inside the supporting part body, the inner wall of the shell is provided with a step surface, and the end part of the supporting part body abuts against the step surface, so that the first supporting part is extruded to one side of the sealing part, and the two pressure-bearing parts are extruded inwards.
In the above technical scheme, because the two pressure-bearing portions are bent inwards, when the end part of the supporting portion body abuts against the step surface, the effect of bending the two pressure-bearing portions inwards is increased, so that the abutting and sealing effect of the two pressure-bearing portions is increased.
Preferably, a gap is arranged between the end part of the supporting part body and the inner wall of the shell, and the cavity outside the supporting part body is communicated with the second channel inside the supporting part body through the gap and the notch. The technical scheme can realize the communication effect of the cavity and the second channel.
Preferably, the waterproof cap is arranged on one side close to the first supporting part, the waterproof cap is in sealing connection with the inner wall of the shell, a through hole is formed in the waterproof cap, so that the first channel is communicated with the inner cavity through the through hole, and the position of the through hole is elastic.
In the technical scheme, the waterproof cap can be sleeved outside the surgical instrument, the diameter of the penetrating hole is smaller than the thin outer diameter of the surgical instrument, and the waterproof cap is arranged at the position of the penetrating hole to be particularly elastic, so that the surgical instrument can penetrate through the waterproof cap, and the waterproof cap can also play a sealing role when extending into and out of the surgical instrument. When the surgical instrument passes through the two-way valve, the first channel and the second channel are communicated, the two-way valve cannot play a partition role at the moment, the instrument channel can be sealed through the waterproof cap at the moment, and high-pressure liquid in the human body channel is prevented from flowing out. Because the waterproof cap is arranged on one side close to the first supporting part, when the surgical instrument is inserted, the surgical instrument firstly passes through the waterproof cap to seal the inner end and the outer end of the instrument channel, and then passes through the two-way valve, and at the moment, the two-way valve is opened and the liquid in the human body channel cannot flow out.
Preferably, the waterproof cap is provided with an annular groove, the first supporting portion is provided with a sealing ring matched with the annular groove, and the sealing ring is in interference fit with the annular groove, so that the first supporting portion is in sealing connection with the waterproof cap.
According to the technical scheme, the sealing between the first supporting part and the sealing ring can be realized, the sealing effect of the isolation valve assembly is improved, the first supporting part and the waterproof cap can be assembled and then put into the inner cavity, and the assembly is simpler.
Preferably, a guide taper hole is formed in one side, away from the first channel, of the through hole. The scheme is convenient for surgical instruments to quickly pass through the waterproof cap.
Preferably, the waterproof cap is provided with a reinforcing ring, and the reinforcing ring is sleeved on the outer side of the through hole. The scheme can increase the elasticity of the waterproof cap near the through hole, and can increase the sealing effect of the waterproof cap on the surgical instrument after the surgical instrument passes through the waterproof cap.
Preferably, the shell comprises a first shell, a second shell and a locking nut, the first shell and the second shell are sleeved and locked through the locking nut, and the ends of the first shell and the second shell clamp the waterproof cap.
According to the technical scheme, the second shell is provided with the external threads, and the lock nut is in threaded connection with the second shell through the external threads. The first casing and the second casing are sleeved and locked through the lock nut, in the assembling process, the first casing and the second casing do not need to rotate relatively, the waterproof cap is prevented from being rubbed circumferentially at the end parts of the first casing and the second casing, the waterproof cap is prevented from being deformed in a torsion mode, the waterproof cap is prevented from rotating along with the waterproof cap, and the sealing effect between the waterproof cap and the casing and between the waterproof cap and the two-way valve is guaranteed.
Preferably, the side wall of the first shell is provided with a first positioning part, the side wall of the second shell is provided with a second positioning part matched with the first positioning part, and the first positioning part is spliced with the second positioning part so as to realize the positioning of the first shell and the second shell in the circumferential direction. One of the first positioning part and the second positioning part is a groove, and the other is a convex structure.
Preferably, the pressure-receiving portion includes a first inclined portion adjacent to the first support portion and a second inclined portion adjacent to the second support portion, and the second inclined portion has an inclination angle α with respect to the axis of the bi-directional valve of 50 ° or more and α or less than 80 °.
In the technical scheme, the larger the inclination angle alpha is, the closer the contact surface of the two pressure-bearing parts is to the two pressure-bearing parts, the more effectively the compression force applied to the two pressure-bearing parts can be transferred to the two pressure-bearing parts, the loss in the transfer process is reduced, the two pressure-bearing parts are enabled to be more tightly attached, and when the inclination angle alpha is too large and even perpendicular to the axis, the two pressure-bearing parts are not easy to deform outwards when a surgical instrument is inserted, so that the surgical instrument is difficult to pass through the two-way valve. It is therefore necessary to set the inclination angle α in the above range, both to ensure the sealing effect between the two pressing portions and to allow the surgical instrument to pass through the bi-directional valve smoothly.
Preferably, the first inclined portion has an inclination angle β with respect to the axis of the two-way valve of 20 ° or more and 45 ° or less. The axial length of the second supporting part can be ensured in the angle range of the inclined angle beta, the sealing effect of the liquid pressure is increased, and the influence of the overlength of the first inclined part on the compact structure of the two-way valve can be avoided.
Preferably, the contact surfaces of the two pressure-receiving portions extend in the left-right direction. The contact surface length can be increased by the scheme, and the endoscope body can conveniently pass through.
Preferably, the first supporting part, the sealing part and the second supporting part are integrally formed. The scheme can ensure the connection stability and the sealing effect between all parts of the two-way valve, and is convenient to manufacture and process.
Drawings
FIG. 1 is a cross-sectional view of a isolation valve assembly of the present invention;
FIG. 2 is an exploded view of the isolation valve assembly of the present invention;
FIG. 3 is a schematic view of the structure of the two-way valve of the present invention;
FIG. 4 is a cross-sectional view of a two-way valve of the present invention;
FIG. 5 is a side view of a bi-directional valve of the present invention;
fig. 6 is a schematic structural view of the waterproof cap of the present invention;
fig. 7 is a sectional view of the waterproof cap of the present invention;
FIG. 8 is a partial cross-sectional view of the present invention;
fig. 9 is a partial cross-sectional view of the second embodiment of the present invention.
In the figure: the housing 100, the inner cavity 101, the stepped surface 102, the first housing 110, the second housing 120, the lock nut 130, the first positioning portion 140, the second positioning portion 150, the two-way valve 200, the first support portion 210, the seal ring 211, the seal portion 220, the pressure-receiving portion 221, the second inclined portion 2211, the first inclined portion 2212, the second support portion 230, the support portion body 231, the pressing portion 232, the notch 233, the through hole 234, the through groove 235, the first passage 240, the second passage 250, the cavity 300, the gap 400, the waterproof cap 500, the through hole 510, the guide taper 511, the annular groove 530, and the reinforcing ring 540.
Description of the embodiments
In the description of the present embodiment, it should be noted that, if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "rear", etc. appear, the indicated orientation or positional relationship is based on that shown in the drawings, only for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and therefore, it should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like, as presented herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention is further described below with reference to the drawings and specific embodiments.
Example 1:
as shown in fig. 1 to 4, an isolation valve assembly of an endoscope includes a housing 100, an inner cavity 101 disposed in the housing 100, and a bi-directional valve 200 disposed in the inner cavity 101, wherein the bi-directional valve 200 includes a first support portion 210, a sealing portion 220, and a second support portion 230 sequentially connected in an axial direction, a first channel 240 extending in the axial direction is disposed in the first support portion 210, a second channel 250 extending in the axial direction is disposed in the second support portion 230, the sealing portion 220 and the second support portion 230 each have elasticity, the sealing portion 220 includes two pressure-bearing portions 221 disposed at upper and lower sides respectively, the two pressure-bearing portions 221 are bent inward, a side close to an axis of the bi-directional valve 200 in a radial direction is an inner side with respect to the axis of the bi-directional valve 200, a side far away from the axial direction is an outer side, the outer wall of the sealing portion 220 encloses a cavity 300 with an inner wall of the housing 100, the second support portion 230 includes a support portion body 231, two pressing portions 232 disposed at upper and lower sides of the support portion 231, and two notches 233 disposed at left and right sides of the support portion 231 respectively, the cavity 300 is pressed against the first channel 240 and the second channel 240, and the two pressing portions 250 are pressed against the inner wall 250.
In the above technical solution, the isolation valve assembly is used for an endoscope, the first channel 240 of the two-way valve 200 faces inwards the human body, the guide wire penetrates into the human body channel during an endoscopic surgery, then the tail of the guide wire penetrates into the instrument channel from the head of the endoscope, when the tail of the guide wire contacts the bearing parts 221, the guide wire continuously stretches into the guide wire, the bearing parts 221 are extruded outwards by the tail of the guide wire, the two bearing parts 221 are separated from each other to form a gap allowing the guide wire to pass through, after the tail of the guide wire stretches out of the human body, the endoscope stretches into the human body channel under the guidance of the guide wire, then the guide wire is pulled outwards, after the guide wire is pulled out, the two-way valve 200 can close the instrument channel in the endoscope, so that high-pressure liquid in the human body can be prevented from flowing out of the human body through the endoscope, when the surgical instrument needs to be inserted into the instrument channel in the endoscope, when the surgical instrument is contacted with the bearing parts 221, the surgical instrument is continuously inserted inwards, the bearing parts 221 are extruded outwards, the two bearing parts 221 are separated from each other, so that the surgical instrument can pass through the gap allowing the passage is formed, and the surgical instrument can pass through the isolation piece to pass through the human body and enter into the human body or the human body, and the observation valve can be taken. During the operation or after the operation device is used, the operation device can be pulled out, and the two pressure bearing parts 221 separate and seal the first channel 240 from the second channel 250 under the action of self-elasticity and liquid pressure.
Since the two-way valve 200 is generally manufactured by integrally forming the first supporting portion 210, the second supporting portion 230 and the two pressure-bearing portions 221, and then cutting the two pressure-bearing portions 221 by a cutter, when the two pressure-bearing portions 221 are not acted by external force, the two pressure-bearing portions 221 have no tight contact force with each other, and a seal failure is easy to occur. After the endoscopic observation is completed, before the surgical instrument is pulled out, since the first channel 240 and the second channel 250 are already communicated, the internal and external pressures of the two-way valve 200 are balanced, and the liquid pressure in the human body cannot press the two pressure-bearing portions 221 inwards, so that after the endoscope body is pulled out, the gap between the two pressure-bearing portions 221 cannot be eliminated, and the liquid in the human body leaks from the gap between the two pressure-bearing portions 221.
In this application, because two pressing portions 232 and two pressure-bearing portions 221 are all disposed on the upper and lower sides, when the inner wall of the housing 100 extrudes two pressing portions 232, the two pressure-bearing portions 221 can be made to be close to each other for extrusion, so as to seal and isolate the first channel 240 from the second channel 250, even if the two pressure-bearing portions 221 cannot be tightly attached to each other under the condition of not being subjected to external force due to the influence of material fatigue strength, the two pressure-bearing portions 221 can be mutually abutted against each other through the extrusion action of the inner wall of the housing 100. Because the two pressure bearing portions 221 are bent inward, and the two pressure bearing portions 221 partition the first channel 240 and the second channel 250, when the cavity 300 is filled with high-pressure liquid, the inner and outer pressures of the two pressure bearing portions 221 near the side of the second channel 250 are balanced, no high-pressure liquid exists in the first channel 240, the inner pressure of the two pressure bearing portions 221 near the side of the first channel 240 is smaller than the outer pressure, and the high-pressure liquid can press the pressure bearing portions 221 inward, so that the sealing effect of the two pressure bearing portions 221 on the first channel 240 and the second channel 250 is further increased. The two notches 233 may enable the cavity 300 to communicate with the second channel 250, and may prevent the inner wall of the housing 100 from pressing the left and right sides of the first supporting portion 210, and may prevent the pressing forces on the left and right sides from deforming the two bearing portions 221 to the outside.
Specifically, the contact surfaces of the two pressure-receiving portions 221 extend in the left-right direction. The contact surface length can be increased by the scheme, and the endoscope body can conveniently pass through. The first supporting portion 210, the sealing portion 220 and the second supporting portion 230 are integrally formed. The scheme can ensure the connection stability and sealing effect between various parts of the bi-directional valve 200, and simultaneously facilitate the manufacturing process.
The upper or lower pressure bearing portion 221 in the above embodiment may be a complete whole or may be formed of a plurality of small parts that are independent or partially connected.
As shown in fig. 1 to 7, the isolation valve assembly further includes a waterproof cap 500 disposed in the housing 100, the waterproof cap 500 being disposed at a side close to the first support portion 210, the waterproof cap 500 being sealingly connected to the inner wall of the housing 100, the waterproof cap 500 being provided with a through hole 510 such that the first passage 240 communicates with the inner cavity 101 through the through hole 510, the waterproof cap 500 being provided with elasticity at a position of the through hole 510.
In the above technical solution, the waterproof cap 500 may be sleeved outside the surgical instrument, the diameter of the through hole 510 is smaller than the thin outer diameter of the surgical instrument, and the waterproof cap 500 is provided with specific elasticity at the position of the through hole 510, so that the surgical instrument may pass through the waterproof cap 500, and may also perform a sealing function when the waterproof cap 500 is inserted and extended. When the surgical instrument passes through the bi-directional valve 200, the first channel 240 and the second channel 250 are communicated, the bi-directional valve 200 cannot play a role in blocking at this time, and the instrument channel can be sealed through the waterproof cap 500 at this time, so that high-pressure liquid in the human body channel is prevented from flowing out. Because the waterproof cap 500 is disposed at a side near the first support 210, when a surgical instrument is inserted, the surgical instrument passes through the waterproof cap 500 to seal the inner and outer ends of the instrument channel, and then passes through the bi-directional valve 200, and the bi-directional valve 200 is opened at this time so that the liquid in the human body channel does not flow out.
Preferably, the waterproof cap 500 is provided with an annular groove 530, the first supporting portion 210 is provided with a sealing ring 211 adapted to the annular groove 530, and the sealing ring 211 is in interference fit with the annular groove 530, so that the first supporting portion 210 is in sealing connection with the waterproof cap 500. The above technical solution can realize the sealing between the first support portion 210 and the sealing ring 211, increase the sealing effect of the isolation valve assembly, and can put the first support portion 210 and the waterproof cap 500 into the inner cavity 101 after assembling, so that the assembly is simpler. The bi-directional valve 200 and the waterproof cap 500 are made of elastic materials such as rubber, silicon, etc., so that both the bi-directional valve 200 and the waterproof cap 500 have elasticity.
Preferably, the side of the through hole 510 away from the first channel 240 is provided with a guide taper hole 511. The solution facilitates the rapid penetration of surgical instruments through waterproof cap 500. The waterproof cap 500 is provided with a reinforcing ring 540, and the reinforcing ring 540 is sleeved outside the through hole 510. The solution may increase the elasticity of the waterproof cap 500 near the pass-through hole 510, and may increase the sealing effect of the waterproof cap 500 on the surgical instrument after the surgical instrument passes through the waterproof cap 500.
Specifically, the housing 100 includes a first housing 110, a second housing 120, and a locking nut 130, the first housing 110 and the second housing 120 are sleeved and locked by the locking nut 130, and ends of the first housing 110 and the second housing 120 clamp the waterproof cap 500.
In the above technical solution, the first housing 110 is provided with an external thread, and the lock nut 130 is in threaded connection with the first housing 110 through the external thread. The first housing 110 and the second housing 120 are sleeved and locked by the lock nut 130, and in the assembly process, the first housing 110 and the second housing 120 do not need to rotate relatively, so that the waterproof cap 500 is prevented from being twisted and deformed due to circumferential friction between the ends of the first housing 110 and the second housing 120, the waterproof cap 500 is prevented from rotating along with the waterproof cap 500, and the sealing effect between the waterproof cap 500 and the housing 100 and between the waterproof cap 500 and the two-way valve 200 is ensured.
Preferably, a first positioning portion 140 is disposed on a side wall of the first housing 110, a second positioning portion 150 adapted to the first positioning portion 140 is disposed on a side wall of the second housing 120, and the first positioning portion 140 is inserted into the second positioning portion 150, so as to realize positioning of the first housing 110 and the second housing 120 in a circumferential direction. One of the first positioning portion 140 and the second positioning portion 150 is a groove, and the other is a protrusion structure.
Preferably, the bearing portion 221 includes a first inclined portion 2212 adjacent to the first support portion 210 and a second inclined portion 2211 adjacent to the second support portion 230, and as shown in fig. 4, the second inclined portion 2211 has an inclination angle α of 50 ° or less and 80 ° or less with respect to the axis of the bi-directional valve 200. The first inclined portion 2212 has an inclination angle β with respect to the axis of the two-way valve 200 of 20 ° β 45 °.
In the above technical solution, the larger the inclination angle α is, the closer the contact surface of the two bearing portions 221 is to the two pressing portions 232, the more effectively the pressing force received by the two pressing portions 232 can be transferred to the two bearing portions 221, so as to reduce the loss in the transferring process, and make the two bearing portions 221 have larger adhesion force, and when the inclination angle α is too large and even perpendicular to the axis, the two bearing portions 221 are not easy to deform outwards, so that the surgical instrument is difficult to pass through the bi-directional valve 200. It is therefore necessary to set the inclination angle α in the above range, both to secure the sealing effect between the two pressing portions 232 and to allow the surgical instrument to pass through the bi-directional valve 200 smoothly. The angle range of the inclination angle β can ensure the axial length of the second supporting portion 230, increase the sealing effect of the liquid pressure, and avoid the influence of the overlong length of the first inclined portion 2212 on the compact structure of the bi-directional valve 200. The inclined first inclined portion 2212 has a good guiding effect on the surgical instrument, and facilitates the passage of the endoscope through the pressing portion 232.
It will be appreciated that in another embodiment, the waterproof cap 500 may be provided separately from the bi-directional valve 200, i.e., the waterproof cap 500 is not in direct contact with the bi-directional valve 200.
Example 2:
on the basis of embodiment 1, as shown in fig. 8 and 9, a through hole 234 or a through groove 235 is provided on the side wall of the supporting part body 231, so that the cavity 300 outside the supporting part body 231 is directly communicated with the second channel 250 inside the supporting part body 231, a step surface 102 is provided on the inner wall of the housing 100, and the end of the supporting part body 231 abuts against the step surface 102, so that the first supporting part 210 is pressed towards the sealing part 220, and the two bearing parts 221 are pressed inwards.
In the above-mentioned solution, since the two pressure-bearing portions 221 are bent inward, when the end portions of the supporting portion body 231 abut against the step surface 102, the effect of bending the two pressure-bearing portions 221 inward is increased, so that the abutting and sealing effect of the two pressure-bearing portions 221 against each other is increased.
Example 3:
on the basis of embodiment 1, as shown in fig. 1, a gap 400 is provided between the end of the supporting part body 231 and the inner wall of the housing 100, and the cavity 300 outside the supporting part body 231 is communicated with the second channel 250 inside the supporting part body 231 through the gap 400 and the notch 233. The above technical solution may realize the communication between the cavity 300 and the second channel 250.
Claims (10)
1. The utility model provides an isolation valve assembly of endoscope, including the shell, set up the inner chamber in the shell and set up the bi-directional valve in the inner chamber, characterized by, bi-directional valve includes the first supporting part, sealing part and the second supporting part that connects gradually along the axial, be equipped with first passageway in the first supporting part, be equipped with the second passageway in the second supporting part, sealing part and second supporting part all have elasticity, sealing part includes two pressure-bearing portion that set up upper and lower both sides respectively, two pressure-bearing portion are crooked inwards, the outer wall of sealing part and the inner wall of shell surround and form the cavity, the second supporting part includes the supporting part body, two pressure-tight parts that set up respectively in supporting part body upper and lower both sides, and two breach that set up respectively in supporting part body left and right sides, the cavity with the second passageway communicates, the cavity with first passageway cuts off sealedly through first supporting part, the inner wall extrusion of shell the pressure-tight part of pressure-bearing portion of messenger's at least part each other supports and cuts off first passageway with the second passageway;
a gap is arranged between the end part of the supporting part body and the inner wall of the shell, and the cavity outside the supporting part body is communicated with the second channel inside the supporting part body through the gap and the notch.
2. The isolating valve assembly of claim 1, wherein a through hole or a through groove is formed in a side wall of the supporting portion body, so that a cavity outside the supporting portion body is directly communicated with a second channel inside the supporting portion body, a step surface is formed in an inner wall of the housing, and an end portion of the supporting portion body abuts against the step surface, so that the first supporting portion is pressed towards one side of the sealing portion, and the two bearing portions are pressed inwards.
3. The isolating valve assembly of claim 1, further comprising a waterproof cap disposed within the housing, the waterproof cap disposed on a side adjacent the first support, the waterproof cap being sealingly coupled to the inner wall of the housing, the waterproof cap having a through hole for allowing the first passageway to communicate with the lumen through the through hole, the waterproof cap being resilient in the position of the through hole.
4. An isolation valve assembly for an endoscope according to claim 3 and wherein said waterproof cap is provided with an annular groove, said first support portion is provided with a sealing ring which is adapted to the annular groove, and said sealing ring is interference-fitted to the annular groove to provide a sealing connection between the first support portion and the waterproof cap.
5. An isolation valve assembly for an endoscope according to claim 3 and wherein said through bore is provided with a pilot cone bore on a side thereof remote from said first passageway; the waterproof cap is provided with a reinforcing ring, and the reinforcing ring is sleeved on the outer side of the through hole.
6. An isolation valve assembly for an endoscope according to any of claims 3 to 5 and wherein said housing comprises a first housing, a second housing and a lock nut, said first housing and second housing being nested and locked by said lock nut, ends of said first housing and second housing gripping a waterproof cap.
7. The isolating valve assembly of claim 6, wherein a first positioning portion is provided on a side wall of the first housing, a second positioning portion adapted to the first positioning portion is provided on a side wall of the second housing, and the first positioning portion is inserted into the second positioning portion to position the first housing and the second housing in a circumferential direction.
8. An isolation valve assembly for an endoscope according to any of claims 1 to 5 and wherein said pressure bearing comprises a first inclined portion adjacent to a first support portion and a second inclined portion adjacent to a second support portion, said second inclined portion having an angle of inclination α,50 ° c.ltoreq.α.ltoreq.80° relative to the axis of the bi-directional valve.
9. An isolation valve assembly for an endoscope according to claim 8 and wherein said first angled portion has an angle of inclination β,20 ° or less and 45 ° or less, relative to the bi-directional valve axis.
10. An isolation valve assembly of an endoscope according to any of claims 1 to 5 and wherein the contact surfaces of the two pressure bearing portions extend in a left-right direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311385227.8A CN117100196B (en) | 2023-10-25 | 2023-10-25 | Isolation valve assembly of endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311385227.8A CN117100196B (en) | 2023-10-25 | 2023-10-25 | Isolation valve assembly of endoscope |
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| CN117100196A CN117100196A (en) | 2023-11-24 |
| CN117100196B true CN117100196B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311385227.8A Active CN117100196B (en) | 2023-10-25 | 2023-10-25 | Isolation valve assembly of endoscope |
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| CN (1) | CN117100196B (en) |
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| Publication number | Publication date |
|---|---|
| CN117100196A (en) | 2023-11-24 |
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