CN220293587U - Soft cystoscope sheath and soft cystoscope system - Google Patents

Abstract

The utility model provides a cystoscope sheath and a cystoscope system. The cystoscope sheath comprises a sheath body and an isolating membrane. The mirror sheath body is internally provided with a containing and working channel, and the containing channel and the working channel extend in the same direction, are not communicated with each other and penetrate through the far and near ends of the mirror sheath body. The distal end of the working channel is used for communicating with the bladder, and the proximal end of the working channel is used for communicating with the outside. The distal end of the receiving channel is sealed with an anti-fog high-permeability film. The proximal end of the accommodating channel is communicated with the outside and is used for inserting the soft cystoscope. The containment channel cross-sectional dimensions just allow insertion of a cystoscope. The isolation film completely covers and seals the sheath body, and the proximal end of the isolation film can be opened. When the soft cystoscope is required to be inserted into the accommodating channel, the proximal end of the isolating membrane is opened so as to insert the soft cystoscope into the accommodating channel. According to the utility model, the isolation film and the lens sheath body with the anti-fog high-permeability film form two sterile protective barriers, so that the soft cystoscope is in a relatively sterile environment, and iatrogenic cross infection is eliminated as much as possible.

Description

Soft cystoscope sheath and soft cystoscope system

Technical Field

The utility model relates to the field of medical instruments, in particular to a cystoscope sheath and a cystoscope system.

Background

Cystoscopes, a conventional medical device for the examination and treatment of urinary bladder diseases, have an important role in the diagnosis, treatment and follow-up of urinary and bladder lesions. Cystoscopes typically used for urethrocystoscopes include both hard and soft lenses. The soft lens has the advantages of less trauma, less pain for patients and capability of comprehensively observing pathological changes in the bladder.

A conventional cystoscope sheath includes a working channel and a receiving channel. The working channel is used for delivering medicines into the bladder or discharging related liquid, or some accessory tools extend into the bladder through the working channel to perform surgery on the focus inside the bladder. The accommodation channel is used for wrapping the cystoscope, and guiding the cystoscope to extend into the bladder through the accommodation channel for clinical detection.

The traditional cystoscope sheath only plays a role in guiding the cystoscope, and after the cystoscope is inserted into the traditional cystoscope sheath, liquid or human body in the bladder can be contacted with the cystoscope, so that the cystoscope can be polluted. The cystoscope is a reusable tool, and after the last use, the cystoscope is polluted, and sterilization and disinfection are needed, and more than a few hours are needed. Under the condition that patients are many, due to the limited number of the cystoscopes, sterilization time is insufficient for faster turnover use, incomplete sterilization is caused, and iatrogenic cross infection is caused. Meanwhile, when the traditional cystoscope sheath is matched with a cystoscope for clinical use, the surface of the cystoscope sheath is easy to be polluted by external environment in the assembly process, and then the hidden trouble of bacterial infection can be brought to a patient when the cystoscope sheath enters a human body.

Disclosure of Invention

The embodiment of the utility model aims to provide a soft cystoscope sheath, which forms two sterile protective barriers through an isolating film and a sheath body with an anti-fog high-permeability film, so that the soft cystoscope is in a relatively sterile environment, and iatrogenic cross infection is eliminated as much as possible.

It is a second object of embodiments of the present utility model to provide a cystoscope system using the cystoscope sheath.

In a first aspect, a soft cystoscope sheath is provided, comprising a sheath body and an isolating membrane made of medical elastic material. Wherein, the sheath body is internally provided with a containing channel and a working channel which extend in the same direction, are not communicated with each other and penetrate through the far end and the near end of the sheath body; the distal end of the working channel is communicated with the bladder, and the proximal end of the working channel is communicated with the outside; the distal end of the receiving channel is sealed with an anti-fog high-permeability film; the proximal end of the accommodating channel is communicated with the outside and is used for inserting the soft cystoscope; the cross-sectional dimensions of the receiving channel just allow insertion of the cystoscope. The isolating film completely covers and seals the endoscope sheath body, and the proximal end of the isolating film can be opened; when the soft cystoscope is required to be inserted into the accommodating channel, the proximal end of the isolating membrane is opened so as to insert the soft cystoscope into the accommodating channel from the proximal end of the accommodating channel.

In one embodiment, the receiving channel is provided with an exhaust channel therein; forming a groove on the inner wall of the accommodating channel along the extending direction of the accommodating channel to form an exhaust channel, wherein the exhaust channel penetrates through the distal end and the proximal end of the sheath body; the distal end of the exhaust passage is also sealed by an anti-fog high-permeability film, and the proximal end of the exhaust passage is communicated with the outside.

In one embodiment, the cystoscope sheath further comprises a chromogenic agent balloon disposed within the vent channel and proximal to the distal end of the vent channel, the chromogenic agent balloon comprising a balloon made of a water-soluble material for medical use and a medical coloring powder contained within the balloon for contacting and coloring the liquid within the bladder.

In one embodiment, the sheath body comprises a head end part, a bending part and a rear end part from the distal end to the proximal end in sequence, and the head end part, the bending part and the rear end part are connected in sequence in a sealing way; the accommodating channel and the working channel penetrate through the head end part, the bending part and the rear end part; the bending part is a fold structure and is used for bending the head end part around the distal end of the rear end part towards any direction.

In one embodiment, the soft cystoscope sheath further comprises an operation part protective film, wherein the distal end of the operation part protective film is in sealing connection with the outer wall of the lens sheath body corresponding to the proximal ends of the accommodating channel and the working channel; the proximal end of the operation portion protecting film is opened for inserting the soft cystoscope into the accommodation channel.

In one embodiment, the proximal end of the isolation membrane of the cystoscope sheath completely covers the handle protector membrane.

In one embodiment, the proximal end of the working channel includes a first channel and a second channel in parallel with the first channel; the first channel is provided with a check valve which is communicated with the first channel in a unidirectional way from the outside; the second passage is provided with an opening communicating with the outside, and the opening is closable and openable.

In one embodiment, the cystoscope sheath further comprises a non-return elastic membrane, the shape of which is consistent with the cross-sectional shape formed by the containing channel and the exhaust channel; the non-return elastic membrane is connected with the inner wall of the accommodating channel in a sealing way; the non-return elastic membrane is tightly attached to the inner wall of the exhaust channel so as to prevent liquid from passing through; the non-return elastic membrane is provided with a cross gap at the position where the non-return elastic membrane coincides with the axle center of the accommodating channel, the cross gap is used for being propped up by the bladder soft lens and penetrating through, and the edge penetrating through the back cross gap is tightly attached to the outer wall of the bladder soft lens; the elastic membrane is deformed under the impact of a preset air pressure when being attached to the inner wall of the exhaust channel so as to allow the air to pass through.

In one embodiment, at least two non-return elastic membranes are arranged in the receiving channel and the working channel.

According to a second aspect of the present utility model, there is also provided a cystoscope system comprising a cystoscope sheath and a cystoscope according to the above-described aspects.

In one embodiment, the outer wall of the sheath body corresponding to the proximal ends of the accommodation channel and the working channel of the soft cystoscope sheath is provided with a circumferential limit. The proximal end of the cystoscope is provided with a holding part, and the holding part is provided with a circumferential matching part. After the soft bladder mirror is inserted into the accommodating channel to a preset depth, the circumferential matching part is matched with the circumferential limiting part, so that the soft bladder mirror can rotate around the circumferential direction but cannot move along the extending direction of the accommodating channel.

Compared with the prior art, the utility model has the beneficial effects that:

in the technical scheme of the utility model, when the bladder soft endoscope is not inserted into the accommodating channel of the endoscope sheath body, the isolating film covers and seals the endoscope sheath body, so that the endoscope sheath body is in a sterile protective environment, and the endoscope sheath body is prevented from being polluted by the environment. When the soft cystoscope is required to be inserted into the accommodating channel, the proximal end of the isolating membrane is opened, so that the soft cystoscope is inserted into the accommodating channel from the proximal end of the accommodating channel, at the moment, only the proximal end of the isolating membrane is opened, other parts of the isolating membrane are still attached to the lens sheath body, and the protective effect is continuously exerted, so that the lens sheath body is prevented from being polluted by bacteria in the environment as much as possible.

Further, in the bladder test, the separation film of the soft cystoscope sheath is peeled off from the surface of the cystoscope sheath body, and the cystoscope sheath body is inserted into the bladder as soon as possible. Because the far end of the accommodation channel of the endoscope sheath body is sealed by the anti-fog high-permeability film, liquid in the bladder cannot enter the accommodation channel, pollution to the bladder soft endoscope cannot be caused, and the anti-fog high-permeability film can also ensure that the bladder soft endoscope has a good image acquisition visual field.

Because the cystoscope is not contacted with the liquid in the bladder and the urethra, the cystoscope is basically not polluted, the disinfection and sterilization time is shortened, and the turnover efficiency is improved. Meanwhile, as the accommodation channel of the endoscope sheath body and the anti-fog high-permeability film completely isolate the cystoscope from the urethra and the bladder, even if the cystoscope is not subjected to sterilization treatment in a hundred percent, iatrogenic cross infection is basically not caused.

In summary, the isolation film forms the aseptic protection to the endoscope sheath body, and can ensure that the endoscope sheath body is still aseptic protected by the isolation film in the process of inserting the soft bladder endoscope into the accommodating channel, and the isolation film is equivalent to constructing a first aseptic protection barrier. The endoscope sheath body with the anti-fog high-permeability film can not only prevent the bladder soft lens from damaging the urethra, but also effectively prevent bladder liquid and the urethra from polluting the bladder soft lens, so that the containing channel of the endoscope sheath body and the far-end anti-fog high-permeability film are equivalent to constructing a second layer of sterile protective barrier. The two sterile protective barriers are considered from two links of assembly and use of the cystoscope, so that iatrogenic cross infection is eliminated as much as possible, and the treatment efficiency can be correspondingly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of a sheath body of a soft cystoscope sheath according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a soft cystoscope according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the sheath body of a soft cystoscope sheath in combination with a soft cystoscope according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of an isolation membrane of a cystoscope sheath according to an embodiment of the utility model;

FIG. 5 is a schematic view of a configuration of a cystoscope sheath mated with a cystoscope according to an embodiment of the present utility model;

the embodiment of the utility model shows a structural schematic diagram of an isolating membrane of a cystoscope sheath;

FIG. 6 is a schematic cross-sectional view of a sheath body of a soft cystoscope sheath according to an embodiment of the utility model;

FIG. 7 is a schematic view showing a configuration of a backstop elastic membrane and a channel fitting according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of a cystoscope sheath with a plurality of non-return elastic membranes according to an embodiment of the utility model.

In the figure: 10. a sheath body; 11. a receiving channel; 12. a working channel; 121. a first channel; 122. a second channel; 123. a check valve; 13. an antifogging high-permeability film; 14. an exhaust passage; 15. a circumferential limit part; 101. a head end portion; 102. a bending portion; 103. a rear end portion; 20. a separation film; 30. a color-developer balloon; 40. a non-return elastic membrane; 41. a cross slit; 50. an operation section protective film; 100. soft cystoscope; 111. a circumferential mating portion; 112. a holding part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, hereinafter, all the distal and proximal ends are defined according to the distance from the bladder when the soft cystoscope sheath is used, and the end for inserting into the bladder is the distal end, the end far from the bladder and for holding by the hand is the proximal end.

According to a first aspect of the present utility model, as shown in fig. 1, 4 and 5, there is provided a soft cystoscope sheath, comprising a body 10 of a cystoscope sheath made of medical elastic material and a separation membrane 20.

Wherein, the sheath body 10 is internally provided with a containing channel 11 and a working channel 12, and the containing channel 11 and the working channel 12 extend in the same direction, are not communicated with each other and penetrate through the distal end and the proximal end of the sheath body 10; the distal end of the working channel 12 is used for communicating with the bladder, and the proximal end of the working channel 12 is used for communicating with the outside; the distal end of the receiving channel 11 is sealed with an anti-fog high-permeability film 13; the proximal end of the accommodating channel 11 is communicated with the outside and is used for inserting the soft cystoscope 100; the cross-sectional dimensions of the receiving channel 11 just allow insertion of the cystoscope 100. The isolation film 20 completely covers and seals the sheath body 10, and the proximal end of the isolation film 20 may be opened; when the soft cystoscope 100 is to be inserted into the receiving channel 11, the proximal end of the spacer film 20 is opened to insert the soft cystoscope 100 into the receiving channel 11 from the proximal end of the receiving channel 11.

In the technical solution of the above embodiment, when the soft bladder mirror 100 is not inserted into the accommodation channel 11 of the mirror sheath body 10, the isolation film 20 covers and seals the mirror sheath body 10, so that the mirror sheath body 10 is in a sterile and protective environment, so as to avoid the pollution of the mirror sheath body 10 by the environment. When the soft cystoscope 100 is required to be inserted into the accommodating channel 11, the proximal end of the isolating membrane 20 is opened to insert the soft cystoscope 100 into the accommodating channel 11 from the proximal end of the accommodating channel 11, and at this time, only the proximal end of the isolating membrane 20 is opened, and other parts of the isolating membrane 20 are still attached to the sheath body 10, so as to continuously exert the protection effect, and avoid bacteria in the environment from polluting the sheath body 10 as much as possible.

Further, in performing bladder detection, the separation film 20 of the soft cystoscope sheath is peeled off from the surface of the cystoscope sheath body 10, and the cystoscope sheath body 10 is inserted into the bladder as soon as possible. Because the distal end of the accommodation channel 11 of the sheath body 10 is sealed by the antifogging high-permeability film 13, liquid in the bladder cannot enter the accommodation channel 11, pollution to the soft bladder mirror 100 is avoided, and the antifogging high-permeability film 13 can also ensure that the soft bladder mirror 100 has a good image acquisition view.

Just because the cystoscope 100 is not contacted with the liquid in the bladder and the urethra, the cystoscope 100 is basically not polluted, the disinfection and sterilization time is greatly shortened, and the turnover efficiency is improved. Meanwhile, since the accommodation channel 11 and the antifogging high-permeability film 13 of the sheath body 10 have completely isolated the soft cystoscope 100 from the urethra and the bladder, even if the soft cystoscope 100 does not achieve a hundred percent sterilization treatment, iatrogenic cross infection is not substantially caused.

In summary, the isolation film 20 forms a sterile protection for the sheath body 10, and can ensure that the sheath body 10 is still sterile protected by the isolation film 20 during the insertion of the soft bladder mirror 100 into the accommodation channel 11, and the isolation film 20 is equivalent to building a first sterile protection barrier. The endoscope sheath body 10 with the antifogging high-permeability film 13 not only can prevent the bladder soft lens 100 from damaging the urethra, but also can effectively prevent bladder liquid and the urethra from polluting the bladder soft lens 100, so that the containing channel 11 of the endoscope sheath body 10 and the antifogging high-permeability film 13 at the far end are equivalent to constructing a second-layer sterile protective barrier. The two sterile protective barriers are considered from two links of assembly and use of the cystoscope 100, so that iatrogenic cross infection is eliminated as much as possible, and the detection and treatment efficiency can be correspondingly improved.

The working channel 12 is used to deliver or drain medical fluid into the bladder, or to pass surgical instruments through the working channel 12 into the bladder for examination or treatment.

The medical elastic material used for manufacturing the sheath body 10 may be medical elastic plastic, medical rubber or other elastic and bendable medical materials, such as polyether ether ketone, thermoplastic polyurethane rubber, etc. The material used for making the antifogging high-permeability film 13 may be polyether ether ketone treated with a hydrophobic coating, thermoplastic polyurethane rubber, or the like.

In one embodiment, the cross-section of the receiving channel 11 is circular and the portion of the soft cystoscope 100 that extends into the receiving channel 11 is also circular in cross-section, thereby allowing the soft cystoscope 100 to freely rotate within the receiving channel 11.

The inventor found that since the outer diameter of the cystoscope 100 is equal to the inner diameter of the accommodation channel 11, when the cystoscope 100 is inserted into the accommodation channel 11, the air pressure in the accommodation channel 11 is increased, and there is a risk of squeezing the anti-fog high-permeability film 13, and the rupture of the anti-fog high-permeability film 13 can cause the liquid in the bladder to flow into the accommodation channel 11 to pollute the cystoscope 100.

Thus, in one embodiment, as shown in FIG. 1, an exhaust passage 14 is provided within the receiving passage 11; grooves are formed in the inner wall of the accommodating channel 11 along the extending direction of the accommodating channel 11 to form an exhaust channel 14, and the exhaust channel 14 penetrates through the distal end and the proximal end of the sheath body 10. The distal end of the vent passage 14 is also sealed by an anti-fog high-permeability film 13, and the proximal end of the vent passage 14 communicates with the outside.

As shown in fig. 3, in the process of inserting the soft bladder mirror 100 into the accommodating channel 11 and continuously approaching the anti-fog high-permeability film 13 along the accommodating channel 11, the lens end of the soft bladder mirror 100 continuously compresses the gas in the accommodating channel 11, and the compressed gas is immediately discharged along the exhaust channel 14, so that the space from the lens end of the soft bladder mirror 100 to the accommodating channel 11 of the anti-fog high-permeability film 13 always maintains the air pressure with the outside, the situation that the anti-fog high-permeability film 13 is broken due to the overlarge pressure towards the far end side caused by the overlarge air pressure is basically avoided, and the situation that the liquid in the bladder flows into the accommodating channel 11 to pollute the soft bladder mirror 100 is basically prevented.

If the soft cystoscope 100 and the soft cystoscope sheath extend into the bladder, when the soft cystoscope 100 needs to be adjusted and pulled out along the accommodating channel 11, external air enters the space between the lens end of the soft cystoscope 100 and the anti-fog high-permeability film 13 through the exhaust channel 14, so that the negative pressure state is avoided from being formed between the lens end of the soft cystoscope 100 and the accommodating channel 11 of the anti-fog high-permeability film 13, and the situation that the anti-fog high-permeability film 13 is broken due to the overlarge pressure towards the proximal side caused by overlarge air pressure is prevented.

In one embodiment, as shown in fig. 6, the cystoscope sheath further comprises a color-developer balloon 30, the color-developer balloon 30 being disposed within the vent channel 14 near the distal end of the vent channel 14, the color-developer balloon 30 comprising a balloon made of a medical water-soluble material and a medical colored powder contained within the balloon for detecting whether the antifogging high-permeability film 13 containing the channel 11 and the distal end of the vent channel 14 is ruptured.

If the antifogging high-permeability film 13 breaks, liquid in the bladder enters the accommodating channel 11 and also enters the exhaust channel 14, the liquid in the bladder reacts with the balloon of the color-developing agent balloon 30, so that the balloon is dissolved, medical coloring powder in the balloon can leak out, the medical coloring powder can dye the liquid in the bladder, the dyed solution can be observed by the lens of the bladder soft lens 100, and accordingly the antifogging high-permeability film 13 is timely found to break, corresponding measures are taken as soon as possible, clinical operation is timely stopped, and further pollution to a human body and the bladder soft lens 100 is avoided.

The color-developing agent balloon 30 may be formed of a polyvinyl alcohol film (PVA film). Depending on the temperature of the liquid in the bladder, a PVA normal temperature water-soluble film may be used, the dissolution temperature is about 15 to 35 degrees Celsius, a PVA normal temperature water-soluble film may also be used, the dissolution temperature is about 35 to 75 degrees Celsius, and a PVA normal temperature water-soluble film is preferably used. The medical coloring powder in the balloon can be iron oxide red powder harmless to human body.

In one embodiment, as shown in fig. 8, the sheath body 10 includes a head end portion 101, a curved portion 102, and a rear end portion 103 in this order from the distal end to the proximal end, and the head end portion 101, the curved portion 102, and the rear end portion 103 are hermetically connected in this order. The receiving passage 11 and the working passage 12 pass through the head end portion 101, the bent portion 102, and the rear end portion 103. The bending portion 102 has a pleated structure for bending the head end 101 in a more arbitrary direction around the distal end of the rear end 103. The bending portion 102 of the fold structure can be easily bent and changed, and can be synchronously bent in accordance with the state of the snake bone structure at the distal end of the cystoscope 100. The bending portion 102 of the fold structure has a larger bending angle, so that the working channel 12 is not easy to be blocked when the snake bone structure at the distal end of the cystoscope 100 is bent at a large angle, and the working channel 12 is kept unblocked.

It should be noted that, the head end 101, the bending portion 102 and the rear end 103 may be integrally formed, or may be spliced by medical glue, and smooth connection of the accommodating channel 11, the working channel 12 and the exhaust channel 14 needs to be ensured during splicing.

In one embodiment, as shown in fig. 1 and 7, the soft cystoscope sheath further comprises an operation part protection film 50, and the distal end of the operation part protection film 50 is in sealing connection with the outer wall of the sheath body 10 corresponding to the proximal ends of the receiving channel 11 and the working channel 12; the distal end of the operation portion protection film 50 is opened for inserting the soft cystoscope 100 into the accommodation channel 11. The operation part protection film 50 can be stretched and folded, when in use, the operation part protection film 50 is stretched, the soft bladder mirror 100 is inserted into the accommodating channel 11, and finally the holding part 112 of the soft bladder mirror 100 is wrapped by the operation part protection film 50, so that the soft bladder mirror 100 is protected in all directions through the mirror sheath body 10 and the operation part protection film 50, and the use of a clinical process operator is not influenced.

The operation portion protection film 50 and the release film 20 are preferably flexible high-permeability materials, and can be folded and stretched. The operation portion protective film 50 may be made of medical grade polyvinyl chloride, polycarbonate, or the like. The operation portion protection film 50 may be made of a material identical to that of the sheath body 10, and may be integrally formed with the sheath body 10.

In one embodiment, as shown in fig. 5, the separation film 20 completely covers the sheath body 10 and the operation portion protection film 50.

In one embodiment, as shown in fig. 1, the proximal end of working channel 12 includes a first channel 121 and a second channel 122 in parallel with first channel 121. The first channel 121 is provided with a check valve 123 which is communicated with the first channel 121 from the outside in a one-way manner; the second passage 122 is provided with an opening communicating with the outside, and the opening is closable and openable. In one aspect, the opening of the second channel 122 may be opened to allow surgical instruments to pass from the second channel 122 into the working channel 12 and into the bladder. In another convenient way, the opening of the second channel 122 can be closed, and the liquid medicine or gas is conveyed into the first channel 121 through the check valve 123 to enter the working channel 12 and further enter the bladder, and the opening of the second channel 122 can be opened to remove the liquid. The opening of the second channel 122 may be closed using a removable plastic threaded cap or a resilient plug.

In one embodiment, as shown in FIGS. 1 and 7, the cystoscope sheath further comprises a non-return elastic membrane 40, which is shaped to conform to the cross-sectional shape formed by the housing channel 11 and the vent channel 14 together. The non-return elastic membrane 40 is connected with the inner wall of the accommodating channel 11 in a sealing way; the check elastic membrane 40 is closely adhered to the inner wall of the air discharge passage 14 to block the passage of the liquid. The position of the backstop elastic membrane 40, which coincides with the axle center of the accommodating channel 11, is provided with a cross gap 41, the cross gap 41 is used for being spread by the soft cystoscope 100 and penetrating, and the edge of the cross gap 41 is tightly attached to the outer wall of the soft cystoscope 100. The elastic check film 40 deforms under the impact of a predetermined air pressure to allow the passage of air when in contact with the inner wall of the exhaust passage 14.

In case that the antifogging high-permeability film 13 is ruptured, the backstop elastic film 40 can effectively prevent the liquid in the bladder from flowing out along the accommodation channel 11. Specifically, after the liquid in the bladder enters the accommodating channel 11, the edge of the cross gap 41 is tightly attached to the outer wall of the bladder soft lens 100, and the non-return elastic membrane 40 is tightly attached to the inner wall of the exhaust channel 14, so that the liquid in the bladder can only pollute the part of the bladder soft lens 100 located at the inner side of the non-return elastic membrane 40, and the subsequent part can be well protected.

Even if the cystoscope 100 is pulled out of the accommodation channel 11, the crossing slit 41 is immediately closed by the elastic restoring action of the elastic membrane 40, and the bladder fluid is substantially blocked. The non-return elastic membrane 40 is tightly attached to the inner wall of the air exhaust channel 14, and is actively attached, and since most of the liquid in the bladder can be discharged through the working channel 12, even if the liquid leaks into the accommodating channel 11, the liquid pressure is very small, the attachment position of the non-return elastic membrane 40 and the air exhaust channel 14 cannot be flushed, and the liquid in the bladder can be prevented from further leaking through the air exhaust channel 14.

The non-return elastic film 40 may be made of the same material as the sheath body 10, may be attached by gluing, or the non-return elastic film 40 may be integrally formed with the sheath body 10. The cross slit 41 may be cross-shaped or m-shaped, and when the bladder soft mirror 100 is not passed through, the slits of the cross slit 41 are sealed and bonded to each other.

In one embodiment, as shown in FIG. 8, at least two non-return elastic membranes 40 are disposed within the containment channel 11 and working channel 12 to form a multi-layer leak-proof mechanism. Preferably, a single non-return elastic membrane 40 is disposed within the receiving channel 11 and working channel 12 near the proximal end, near the distal end, and between the distal and proximal ends, respectively, to prevent leakage of fluid out of the receiving channel 11 after failure of the non-return elastic membrane 40 at the distal end as much as possible.

In a preferred embodiment, as shown in fig. 8, at least one non-return elastic membrane 40 may be provided in the receiving channel 11 and the vent channel 14 of the head end 101 to block the liquid leaking after the rupture of the anti-fog, high-permeability membrane 13 as much as possible before the bending portion 102, and to minimize the subsequent contamination of the multi-bladder soft lens 100. At the same time, at least one non-return elastic membrane 40 can be arranged in the accommodating channel 11 and the exhaust channel 14 of the rear end part 103, so that after the non-return elastic membrane 40 of the head end part 101 fails, the non-return elastic membrane 40 of the rear end part 103 can also be used for leakage protection, so that the liquid leaked in the bladder can be prevented from directly leaving the accommodating channel 11 and the exhaust channel 14 to the outside to pollute the whole bladder soft lens 100, and even pollute the hands of medical staff.

According to a second aspect of the present utility model, there is also provided a cystoscope system, as shown in figures 1 to 8, comprising a cystoscope sheath and a cystoscope 100 as in the above-described arrangement. It has all the advantages of the cystoscope sheath.

In one embodiment, the outer wall of the sheath body 10 corresponding to the proximal ends of the receiving channel 11 and working channel 12 of the soft cystoscope sheath is provided with a circumferential stop 15. The proximal end of the cystoscope 100 is provided with a grip 112, and the grip 112 is provided with a circumferential mating portion 111. After the soft cystoscope 100 is inserted into the accommodation channel 11 to a predetermined depth, the circumferential engagement portion 111 engages with the circumferential restriction portion 15, so that the soft cystoscope 100 can rotate in the circumferential direction but cannot be displaced in the extending direction of the accommodation channel 11, to prevent the anti-fog high-permeability film 13 from being poked, and simultaneously, the longitudinal movement of the soft cystoscope 100 to drive the lens sheath body 10 is reduced as much as possible, so as to reduce the damage to the patient's urothelial mucosa in the clinical process.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (11)

1. A soft cystoscope sheath, which is characterized by comprising a cystoscope sheath body (10) and an isolating membrane (20) which are made of medical elastic materials;

an accommodating channel (11) and a working channel (12) are arranged in the sheath body (10), and the accommodating channel (11) and the working channel (12) extend in the same direction, are not communicated with each other and penetrate through the far end and the near end of the sheath body (10); the distal end of the working channel (12) is used for communicating with the bladder, and the proximal end of the working channel (12) is used for communicating with the outside; the distal end of the containing channel (11) is sealed by an anti-fog high-permeability film (13); the proximal end of the accommodating channel (11) is communicated with the outside and is used for inserting a soft cystoscope (100); the cross-sectional dimensions of the receiving channel (11) just allow insertion of the cystoscope (100);

the isolation membrane (20) completely covers and seals the sheath body (10), and a proximal end of the isolation membrane (20) is openable; when the cystoscope (100) is required to be inserted into the accommodating channel (11), the proximal end of the isolating membrane (20) is opened, so that the cystoscope (100) is inserted into the accommodating channel (11) from the proximal end of the accommodating channel (11).

2. The cystoscope sheath according to claim 1, characterized in that the receiving channel (11) is provided with an exhaust channel (14); a groove is formed in the inner wall of the accommodating channel (11) and along the extending direction of the accommodating channel (11) so as to form the exhaust channel (14), and the exhaust channel (14) penetrates through the distal end and the proximal end of the sheath body (10);

the distal end of the exhaust passage (14) is also sealed by the anti-fog high-permeability film (13), and the proximal end of the exhaust passage (14) is communicated with the outside.

3. The cystoscope sheath according to claim 2, characterized in that it further comprises a chromogenic agent balloon (30), said chromogenic agent balloon (30) being disposed within the venting channel (14) near the distal end of the venting channel (14), said chromogenic agent balloon (30) comprising a balloon made of a medical water-soluble material and a medical colouring powder contained within said balloon, said medical colouring powder being intended to be in contact with and colour the intravesical liquid.

4. The cystoscope sheath according to claim 1, characterized in that the cystoscope sheath body (10) comprises a head end (101), a curved portion (102) and a rear end (103) in sequence from distal end to proximal end, the head end (101), the curved portion (102) and the rear end (103) being in sequence in sealed connection;

-said housing channel (11) and said working channel (12) both extend through said head end (101), said bend (102) and said rear end (103);

the bending part (102) is a fold structure and is used for bending the head end part (101) around the distal end of the rear end part (103) towards any direction.

5. The cystoscope sheath according to claim 1, characterized in that it further comprises an operating portion protection film (50), the distal end of the operating portion protection film (50) being sealingly connected to the outer wall of the lens sheath body (10) corresponding to the proximal ends of the receiving channel (11) and the working channel (12); the proximal end opening of the operation part protection film (50) is used for inserting the soft cystoscope (100) into the accommodation channel (11).

6. The cystoscope sheath according to claim 5, characterized in that the proximal end of the isolation membrane (20) of the cystoscope sheath completely covers and wraps around the operating portion protection membrane (50).

7. The cystoscope sheath according to claim 1, characterized in that the proximal end of the working channel (12) comprises a first channel (121) and a second channel (122) parallel to the first channel (121);

a check valve (123) which is communicated with the first channel (121) in a one-way from the outside is arranged on the first channel (121); the second passage (122) is provided with an opening communicating with the outside, and the opening is closable and openable.

8. A cystoscope sheath according to claim 3, characterized in that it further comprises a non-return elastic membrane (40) whose shape corresponds to the cross-sectional shape formed jointly by the containment channel (11) and the vent channel (14);

the non-return elastic membrane (40) is connected with the inner wall of the accommodating channel (11) in a sealing way; the non-return elastic membrane (40) is tightly attached to the inner wall of the exhaust channel (14) so as to prevent liquid from passing through;

a cross gap (41) is formed at the position where the backstop elastic membrane (40) coincides with the axle center of the accommodating channel (11), the cross gap (41) is used for being spread by the soft cystoscope (100) and penetrating through, and the edge of the cross gap (41) is tightly attached to the outer wall of the soft cystoscope (100) after penetrating through the soft cystoscope;

the non-return elastic membrane (40) is deformed by the impact of a predetermined air pressure to allow the passage of air when being bonded to the inner wall of the exhaust passage (14).

9. A cystoscope sheath according to claim 8, characterised in that at least two of the non-return elastic membranes (40) are provided within the receiving channel (11) and working channel (12).

10. A cystoscope system, characterized in that it comprises a cystoscope (100) and a cystoscope sheath according to any one of claims 1-9.

11. The cystoscope system according to claim 10, characterized in that the outer wall of the cystoscope sheath body (10) corresponding to the proximal ends of the receiving channel (11) and working channel (12) of the cystoscope sheath is provided with a circumferential stop (15);

the proximal end of the cystoscope (100) is provided with a holding part (112), and the holding part (112) is provided with a circumferential matching part (111);

after the soft bladder mirror (100) is inserted into the accommodating passage (11) to a predetermined depth, the circumferential engagement portion (111) engages with the circumferential stopper portion (15) so that the soft bladder mirror (100) is rotatable in the circumferential direction but is not displaceable in the extending direction of the accommodating passage (11).