Washing and sucking integrated medical endoscope and covering body matched with same

Abstract

A flushing and sucking integrated medical endoscope and a covering body matched with the same for use, the covering body (2) comprises a covering body head (21), a covering body expandable part (22) and a covering body sleeving part (23), the covering body (2) sleeves at least a partial area of the head (11) of an endoscope catheter (1), and after the covering body (2) is sleeved, an inner opening (101) of a working channel of the endoscope catheter (1) and a snooping assembly (112) can still play corresponding roles. A dynamic interlayer (200) is formed between the outer surface of the endoscope catheter (1) and the expandable portion (22) of the covering body, during use, flushing fluid (D) enters the dynamic interlayer (200) and then flows out through a fluid outlet (201) of the dynamic interlayer, and the flushing fluid (D) after in-vivo tissue flushing and flushed waste materials (P) are sucked into the working channel (10) through an inner opening (101) of the working channel of the endoscope catheter. And then the air is discharged out of the body through the working channel outer opening (102).

Description

Technical Field

[0001] The utility model relates to an integrated flushing and suction medical endoscope and a matching covering body, belonging to the technical field of medical equipment products. Background Art

[0002] When used, existing medical endoscopes enter natural cavities or pathological sinus tracts of living organisms to perform operations such as biopsy, tissue ablation, electroresection, laser lithotripsy, etc. There will be a large amount of waste materials such as secretions, blood clots, and stone fragments. Some waste materials adhere to the tissue surface and are difficult to clean, while some waste materials are located in sinuses, appendix, renal calyx, etc. Cleaning the waste materials usually requires the use of flushing fluid combined with negative pressure suction, and the operation is usually performed intermittently. The liquid outlet on the head of the endoscope is difficult to reach the blind end of the cavity, and the liquid outlet for the flushing fluid to enter the body is usually fixed to the position of the endoscope catheter head. Many flushing operations are performed in a non-visual environment, with the defects of poor flushing flexibility and small flushing area. Summary of the invention

[0003] The utility model provides a flushing and suction integrated medical endoscope and a matching covering body, which can visually perform flushing and suction simultaneously, and is helpful to thoroughly clean up waste materials in the process of endoscopic surgery.

[0004] The purpose of the utility model is achieved as follows: a flushing and suction integrated medical endoscope, a peep assembly is provided in the head area of ​​the endoscope catheter, the endoscope catheter is provided with a working channel running through the head and tail, the working channel is provided with an inner opening of the working channel entering the body when in use and an outer opening of the working channel in the outer part, when in use, the top of the endoscope catheter head can extend from the inner opening of the sheath tube of the sheath tube used in conjunction with the endoscope catheter, and also includes a hollow covering body, the covering body is composed of a covering body head, a covering body expandable part, and a covering body sleeve part, and the covering body is sleeved on the endoscope. The sheath is outside the endoscope catheter and wraps at least a portion of the endoscope catheter. The gap between the outer surface of the endoscope catheter and the expandable part of the covering is the dynamic interlayer, and the gap between the sheath and the outer surface of the endoscope catheter is the static interlayer. When in use, the external liquid entering the static interlayer first enters the dynamic interlayer through the dynamic interlayer liquid inlet directly formed or participated in by the sleeve part of the covering, and then flows out through the dynamic interlayer liquid outlet. The flushing liquid and waste materials after flushing the internal tissues are sucked into the working channel through the opening inside the working channel of the endoscope catheter, and then discharged to the body through the opening outside the working channel.

[0005] In order to ensure smooth flow of the flushing liquid, the preset total area of ​​the dynamic interlayer liquid inlet is larger than the preset total area of ​​the dynamic interlayer liquid outlet before the expandable portion of the covering body is deformed and expanded.

[0006] In order to achieve better inflation and expansion, the outer surface and / or inner surface of the expandable portion of the covering is provided with a hydrophilic coating for lubrication.

[0007] Furthermore, the endoscope catheter is provided with a connection structure with the covering body, including one or more of the following methods: discontinuous or continuous grooves on the outer surface of the middle part of the endoscope catheter, an annular depression or partial depression in the head of the endoscope catheter, an external thread of the head of the endoscope catheter, an assembly section with a slightly reduced circumferential outer diameter downward from the top of the endoscope catheter head, and discontinuous or continuous barriers distributed in an annular manner below the top of the endoscope catheter head.

[0008] The covering body head and the covering body expandable part of the covering body are one integrally formed part; or the covering body head and the covering body expandable part of the covering body are each independently formed parts, and the two are then tightly connected as one.

[0009] The sleeve portion of the covering body is provided with one or more of the following structures: a ring-shaped inward protruding rib, a thin-walled portion for connecting with the expandable portion of the covering body, a notch that becomes a dynamic interlayer liquid inlet after being fitted with an endoscope catheter, and a through hole that directly becomes a dynamic interlayer liquid inlet without fitting with an endoscope catheter.

[0010] A ring-shaped elastic sealing body is provided at the tail end of the sheath, and the elastic sealing body is in interference contact with the outer surface of the endoscope catheter during relative motion, so that the static interlayer is sealed from external liquid; or the inner surface of the sheath in a local area of ​​the sheath tail is tightly fitted with the outer surface of the endoscope catheter, so that the endoscope catheter and the sheath can make relative motion while being sealed from external liquid.

[0011] The expandable portion of the covering body has one or more of the following structures and forms: uneven wall thickness, staged difference in wall thickness, inwardly protruding and / or outwardly protruding ribs distributed with discontinuous or continuous thread lines, and corrugated tube-like undulations.

[0012] It also includes a protruding suction body and / or a protruding blocking body arranged in the top area of ​​the endoscope catheter head or the head of the covering body. The protruding suction body and / or the protruding blocking body are straight or curved.

[0013] In order to increase the cleaning effect of waste materials adhering to the tissue surface, the head of the covering body and / or the expandable part of the covering body are provided with one or more structures such as brush-like protrusions, bumps, particles, and spikes.

[0014] The dynamic interlayer liquid outlet is arranged on the expandable part of the covering body and / or the head of the covering body; the dynamic interlayer liquid outlet is directly opened on the head of the covering body and / or formed by the inward notch of the annular covering body head component and the outer surface of the endoscope catheter head.

[0015] The head of the drape is provided with a tubular embedding section which can be embedded in the opening of the working channel of the endoscope catheter, and the tubular embedding section is used for fixing the head of the drape.

[0016] Furthermore, the head of the covering body is provided with a tubular embedding section which can be embedded in the opening of the working channel of the endoscope catheter, and the distal end of the tubular embedding section is also provided with a hollow root section, which forms a gap at the top of the endoscope catheter head after assembly.

[0017] The covering can be used as an independent product. The covering is composed of a covering head, an expandable covering part, and a covering sleeve part. The covering is sleeved on at least a part of the endoscope catheter head. After the covering is sleeved, the inner opening of the working channel of the endoscope catheter and the peeping component can still play corresponding functions. A dynamic interlayer is formed between the outer surface of the endoscope catheter and the expandable covering part. When in use, the flushing liquid first enters the dynamic interlayer and then flows out through the liquid outlet of the dynamic interlayer. The flushing liquid after flushing the internal tissue and the flushed waste materials are sucked into the working channel through the inner opening of the working channel of the endoscope catheter, and then discharged to the body through the outer opening of the working channel.

[0018] A medical endoscope with integrated flushing and suction, wherein a peep assembly is provided in the head area of ​​an endoscope catheter, the endoscope catheter is provided with a working channel running through the head and tail, the working channel is provided with an inner opening of the working channel entering the body when in use and an outer opening of the working channel outside the body, and also includes a hollow covering body, the covering body is composed of a covering body head, an expandable part of the covering body, and a covering body sleeve part, the covering body is sleeved on the outside of the endoscope catheter and at least wraps a part of the head area of ​​the endoscope catheter, and the gap between the outer surface of the endoscope catheter and the expandable part of the covering body is a dynamic interlayer; the endoscope catheter is also provided with a liquid inlet channel connected to the outside, the liquid inlet channel is connected to the dynamic interlayer, when in use, the flushing liquid enters the dynamic interlayer from the liquid inlet channel, and then flows out from the liquid outlet of the dynamic interlayer, the flushing liquid after flushing the body tissue and the flushed waste materials are sucked into the working channel through the inner opening of the working channel of the endoscope catheter, and then discharged to the outside of the body through the outer opening of the working channel.

[0019] The head of the covering body can be slidably sleeved on the outside of the endoscope catheter. When the endoscope catheter is stationary, the head of the covering body can be displaced along the axial direction of the endoscope catheter under the drive of the flushing fluid.

[0020] The connection between the sleeve portion of the covering body and / or the head portion of the covering body and the endoscope catheter is easily detachable.

[0021] The beneficial effects of the utility model are:

[0022] 1. Precise flushing and negative pressure suction under visualization during surgery are significantly better than blind flushing.

[0023] 2. The undulating or peristaltic expanding covering can radially press the natural cavity mucosa or other body tissues in real time, play a deep massage role, promote lymphatic and venous return, and improve local blood supply.

[0024] 3. When it is difficult for water flow to flush away waste materials adhering to the mucosal surface, it is necessary to use the axial brush-like protrusions and radial brush-like protrusions on the covering body to brush away the waste materials from the mucosa under the drive of the endoscopic catheter.

[0025] 4. The expandable part of the thin-walled covering body made of elastic material fills and expands rapidly while the wall thickness decreases. Even if flushing liquid is sprayed out from each dynamic interlayer outlet, but the flushing liquid entering the dynamic interlayer is greater than the amount of liquid sprayed, the expandable part of the covering body will also fill and expand significantly, and at the same time, the volume of the dynamic interlayer will increase, causing the flow channel to widen, and the flushing liquid flow rate will also be significantly improved.

[0026] 5. After expansion, due to the elastic restoring force of the expandable part of the covering body and the uneven flow of the flushing liquid in the dynamic interlayer, the expansion state of the expandable part of the covering body after filling changes continuously under a certain pressure, showing a fluctuating or creeping state, driving the liquid outlet direction of the dynamic interlayer to change continuously within a certain range, increasing the flushing area that the flushing liquid can directly reach, and improving the flushing effect.

[0027] 6. The distal end of the expandable portion of the covering body that deforms forward drives the dynamic interlayer liquid outlet to extend forward synchronously, achieving the effect of close dynamic flushing that is difficult to achieve with the prior art.

[0028] 7. The elastic restoring force of the expandable part of the expanded covering further increases the flushing pressure in the dynamic interlayer, increases the flow rate of the flushing liquid at the outlet of the dynamic interlayer, and further improves the flushing effect.

[0029] 8. The flushing liquid flows out through the axial outlet, the oblique outlet, and the radial outlet, which increases the flushing area and eliminates the dead corners of flushing. It can fully flush the waste materials in the natural cavities such as the external auditory canal, sinuses, vagina, or other surgical areas.

[0030] 9. A hydrophilic coating is added to at least the outer surface of the head of the covering and / or the expandable portion of the covering, which significantly improves the lubrication performance of the covering portion covering the endoscopic catheter, reduces contact resistance, further reduces mechanical damage to the mucosa and other body tissues caused by surgical operations, and is more conducive to the deformation of the expandable portion of the covering and the fluctuation or peristalsis during the expansion process.

[0031] 10. When the flushing fluid with relatively high pressure enters the dynamic interlayer and the expandable part of the covering body is filled and expanded, the outlet of the dynamic interlayer can be driven to extend forward so that the flushing area is constantly changing and the position of the radial brush-like protrusion is constantly moving, thereby increasing the brushing area and achieving a dynamic brushing effect without moving the endoscopic catheter.

[0032] 11. After the inflatable part of the covering is inflated, it can block the openings of natural cavities such as the external auditory canal and the anus, preventing flushing fluid and harmful waste substances from directly flowing out from the gap between the covering body and the openings of natural cavities such as the external auditory canal and the anus, thereby eliminating or reducing the risk of waste substances flowing outside the natural cavity to contaminate and damage the local skin, and reducing the burden of treatment and care.

[0033] 12. The flexible tubular covering head protruding suction body allows waste materials to enter the inner cavity of the protruding suction body through the forward protruding suction body entrance and then enter the working channel, achieving the effect of flexible approach and precise suction. The protruding suction body can also be set to bend at different angles according to different application scenarios, so as to better eliminate possible dead spots in the body.

[0034] 13. The protruding blocking body can prevent the flushed waste materials from going up along the natural cavity and being retained in the body, such as preventing fecal debris in the anal canal from being flushed into the rectal ampulla, and preventing inflammatory substances in the vagina from being flushed into the uterus through the cervical opening.

[0035] 14. Combined with the negative pressure suction in the working channel, the "integrated flushing and suction" and "integrated flushing, brushing and suction" functional coupling of the endoscope system are realized, realizing the ideal function of dynamic integration and improving the treatment efficiency of the endoscope system.

[0036] 15. The covering covering the endoscope catheter can be used as a disposable consumable, and the endoscope catheter can be reused after disinfection, which greatly saves the overall cost.

[0037] 16. The design of the gap at the top of the endoscope catheter head allows the flushing liquid to enter the gap at the top and then spray out, ensuring the stability of the flushing water flow.

[0038] 17. The endoscope catheter head has a gap structure at the top. When the flexible covering head hits the mucosa or other biological tissues in the body, the flexible covering head can be deformed toward the top gap to play a buffering and protective role, thereby ensuring the safety of the operation.

[0039] 18. The hollow brush-like protrusions can pass the flushing liquid through the body cavity. When in use, brushing and flushing are highly integrated, which is more conducive to cleaning waste materials, especially waste materials in the mucosal folds.

[0040] 19. By regulating the flushing liquid pressure, the head of the covering body is driven to move axially back and forth in the head area of ​​the endoscope catheter. When the endoscope catheter does not move, the flushing and brushing actions can act on the body tissues at different spatial positions. At the same time, the waste materials can be observed to be sucked through the opening in the working channel of the endoscope catheter, thereby further regulating the movement degree of the head of the covering body, and realizing a more dynamic and precise "flushing, brushing, and sucking" operation.

[0041] The utility model significantly simplifies the surgical operation steps of the endoscopic system, reduces tissue damage, and immediately and fully removes various waste materials during the operation; it realizes immediate stone removal during urinary stone surgery and eliminates the risk of residual stone fragments; it immediately and fully removes ablation materials, pus, blood clots, infectious substances, etc. during the operation, greatly saving operation time, improving operation quality, and reducing treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings which do not limit the present invention are as follows:

[0043] Figure 1A : Schematic diagram of embodiment 1, the endoscope catheter 1 is inserted into the sheath tube 3 and then passes out, and the covering body 2 is partially cut away

[0044] Figure 1B : Schematic cross-sectional view of the endoscope catheter 1 and the sheath 3 of Example 1, the arrow indicates the direction of liquid flow during use

[0045] Figure 1C : Cross-sectional view of Example 1, arrows indicate the direction of liquid flow during use, and dotted lines show the liquid flow path

[0046] Figure 1D : Cross-sectional view of embodiment 1 entering the ear canal

[0047] Figure 1E : Cross-sectional view of the inflatable portion 22 of the covering body after it is filled and inflated after entering the ear canal in Example 1

[0048] Figure 1F : Schematic diagram of the structure of the partial cutaway of Example 1

[0049] Figure 1G : A three-dimensional schematic diagram of a solution of Example 1

[0050] Figure 1H : A schematic diagram of the components of a solution of Example 1, the coating 2 is cut to show

[0051] Fig. 1I : Schematic diagram of the partial cross-section structure of another embodiment 1

[0052] Figure 2A : Schematic diagram of the structure of the partial cutaway of Example 2

[0053] Figure 2B : Schematic diagram of Example 2 after the coating is filled and expanded

[0054] Figure 2C : Partial cross-sectional view of the inflatable portion 22 of the covering body in the inflated state in Example 2

[0055] Figure 2D : A partial cross-sectional diagram of a blocking capsule 24 used in Example 2

[0056] Figure 2E : A partial cross-sectional view of another blocking capsule 25 of Example 2

[0057] Figure 3A : A three-dimensional schematic diagram of Example 3, in which the covering body 2 enters the vagina shown in the cutaway view

[0058] Figure 3B : Schematic diagram of the partial cross-section structure of Example 3, with arrows indicating the direction of liquid flow

[0059] Figure 3C : A schematic diagram of a partially cutaway structure of the coating 2 of Example 3

[0060] Figure 4A : A three-dimensional schematic diagram of Example 4

[0061] Figure 4B : Partial cutaway diagram of Example 4

[0062] Figure 4C : Schematic diagram of Example 4 for cleaning stone debris P4 in renal calyx K2

[0063] Figure 4D : Example 4 Two different covering head parts 21e, 21f

[0064] Figure 5A : Partial cutaway diagram of Example 5

[0065] Figure 5B : Schematic cross-section of Example 5

[0066] Figure 5C : A partial cutaway schematic diagram of another structure of Example 5

[0067] Figure 5D : A partial cutaway diagram of another structure of Example 5

[0068] Figure 5E : A partial cutaway diagram of another structure of Example 5

[0069] Fig. 5F : A partial cutaway diagram of another structure of Example 5

[0070] Figure 5G : A partial cutaway exploded view of a new structure of Example 5

[0071] Figure 5H : A schematic diagram of a partially cutaway assembly of a new structure of Example 5

[0072] Fig.5I : Partial cutaway exploded view of another novel structure of Example 5

[0073] Figure 5J : A schematic diagram of a partially cutaway assembly of another novel structure of Example 5

[0074] Figure 5K : Partial cutaway exploded view of another novel structure of Example 5

[0075] Fig. 6A : Partial cutaway diagram of Example 6

[0076] Figure 6B : Schematic diagram of the exploded view of the embodiment 6, with the partial cutaway showing the coating 2

[0077] Figure 6C : Partial cutaway diagram of another structure of Example 6

[0078] Fig. 7A : Schematic cross-section of the coating 2 of Example 7, the dynamic interlayer 200 is not filled

[0079] Figure 7B : Schematic diagram of the cross section of the drape 2 of Example 7, the dynamic interlayer 200 is filled, driving the drape head 21 to slide toward the endoscope catheter head top 111, and the arrow indicates the moving direction of the drape head 21

[0080] Figure 7C : Schematic diagram of the cross-section of the drape 2 of Example 7, the dynamic interlayer 200 is significantly filled, driving the drape head 21 to slide to a position closer to the top 111 of the endoscope catheter head

[0081] Fig.7D : A three-dimensional perspective showing a structure without an annular barrier 117

[0082] Fig. 7E : A three-dimensional schematic diagram of a solution of Example 7, showing the axial brush-like protrusion 212 and the radial brush-like protrusion 222 DETAILED DESCRIPTION

[0083] The embodiments of the present invention are not limited to the following:

[0084] Embodiment 1:

[0085] like Figures 1A-1IAs shown, the flushing and suction integrated medical endoscope and the matching covering body, the endoscope catheter 1 is composed of a head 11, a middle part 12, and a tail 13. The head 11 area of ​​the endoscope catheter 1 is provided with a spying component 112, and the endoscope catheter 1 is provided with a working channel 10 that runs through the head and tail. The working channel 10 is provided with an inner working channel opening 101 that enters the body when in use and an outer working channel opening 102 that is outside the body. The working channel 10 of the endoscope catheter 1 is used for the passage of medical tools when in use, and is for the medical tools located therein. The endoscope catheter tail 13 is provided with a tail expansion area 132, and various endoscope-related electrical components can be integrated here. The information obtained by the snooping component 112 is connected to an external display and control device (omitted in the figure) through a connecting line 131 of the endoscope catheter tail 13; a hollow sheath 3, including a sheath head 31, a sheath middle part 32, a sheath tail 33, and a sheath lumen 30 ( Figure 1H As shown, a sheath inner opening 301 and a sheath outer opening 302 are provided for entering the body during use. When in use, the top end of the head 11 of the endoscope catheter 1 extends from the sheath inner opening 301 inserted into the body. In this example, the sheath tail 33 is connected with a sheath handle 34 for easy operation by the user. When in use, various treatment and diagnostic instruments can be inserted into the working channel 10 of the endoscope catheter 1, such as various ablation catheters, biopsy forceps, balloon catheters, laser optical fibers, etc. After completing the staged operation, it is usually necessary to remove the waste material P at the treatment position. The prior art is to insert a flushing tube through the working channel 10 or spray flushing liquid from the flushing channel on the endoscope catheter 1, and then the working channel 10 is sucked and discharged to the outside of the body through a negative pressure device.

[0086] In order to remove inflammatory secretions, ablation products, blood clots, stone debris, various tissue masses and other waste materials P from the natural cavity or other treatment positions in the body to the outside of the body during the use of the endoscopic catheter 1, and to achieve the effect that is difficult to achieve with the prior art, the utility model designs a hollow covering body 2, the covering body 2 is in the shape of a thin sleeve as a whole, and the covering body 2 is composed of a covering body head 21, a covering body expandable part 22, and a covering body sleeve part 23, preferably a transparent or translucent material, and the covering body expandable part 22 is preferably a flexible material with good compliance, such as silicone rubber, latex, or thermal The cladding body is made of a plastic elastomer (the inflatable part 22 of the cladding body can also be made of non-compliant or semi-compliant materials); when in use, the cladding body 2 is sleeved on the outside of the endoscope catheter 1 and wraps at least a part of the area of ​​the endoscope catheter head 11. In this example, the cladding body sleeve part 23 has a plurality of notches on the inner wall, which become the dynamic interlayer liquid inlet 202 after being fitted with the endoscope catheter 1. A through hole can also be provided to directly become the dynamic interlayer liquid inlet 202 without being fitted with the endoscope catheter 1 (not shown); the thin-walled cladding body inflatable part 22 connecting part 221 is connected to the ring by bonding, welding, etc. The thin-walled portion 232 of the sheath 3 is connected as a whole; the annular sheath 23 is sleeved and fixed on the outer surface of the endoscope catheter 1, so that the endoscope catheter 1 can drive the sheath 2 to move synchronously; after the sheath 2 is sleeved, the opening 101 in the working channel of the endoscope catheter 1 and the peeping component 112 are still exposed to the outside, and the gap between the outer surface area of ​​the covered endoscope catheter 1 and the expandable portion 22 of the sheath constitutes a dynamic interlayer 200, while the gap between the sheath 3 and the outer surface of the endoscope catheter 1 constitutes a static interlayer 300; the sheath tail 33 is provided The ring-shaped elastic sealing body S1 is in interference contact with the outer surface of the endoscope catheter 1 during relative movement, so that the static interlayer 300 is closed to the outside (the elastic sealing body S1 may not be provided, and the local sheath lumen is reduced so that the outer surface of the endoscope catheter 1 and the sheath can move relative to each other and at the same time be sealed to the external liquid, the figure is omitted). When in use, the external liquid, i.e., the flushing liquid, enters the static interlayer 300 through the opening 3002 of the hollow sheath side branch 3001 on the sheath tail 33. The flushing liquid entering the static interlayer 300 first passes through the dynamic interlayer liquid inlet 202 on the covering body sleeve 23 ( Figure 1C The liquid enters the dynamic interlayer 200 and then passes through the dynamic interlayer outlet 201 ( Figure 1CThe dynamic interlayer liquid outlet 201 has at least three types: an axial liquid outlet 201a, an oblique liquid outlet 201b, and a radial liquid outlet 201c, through which the flushing liquid can be sprayed or flowed forward. Each type of dynamic interlayer liquid outlet 201 meets different clinical flushing needs. The specific angle of the dynamic interlayer liquid outlet 201 can be adjusted within a certain range when initially set. The flushed liquid and flushing material are sucked into the working channel 10 through the inner opening 101 of the working channel of the endoscope catheter 1 and then discharged to the body through the outer opening 102 of the working channel. When in use, a negative pressure pipeline and a related negative pressure suction device (not shown) need to be connected to the outer opening 102 of the working channel. In order to remove the waste material P that may adhere to the mucosal surface, when it is difficult to flush it off with water, the axial brush-like protrusion 212 of the covering head 21 needs to be used to brush the waste material P off the mucosa.

[0087] like Figure 1D The expandable portion 22 of the covering body of the utility model partially covers the endoscope catheter 1 and enters the external auditory canal E. The top end 111 of the endoscope catheter head is adjacent to the tympanic membrane T. When the pressure of the flushing liquid is relatively low, the flushing liquid flows out through the axial liquid outlet 201a, the oblique liquid outlet 201b, and the radial liquid outlet 201c, and the pus P1 in the external auditory canal E is flushed out under visual conditions. The pus P1 can also be brushed off into the flushing liquid by the axial brush-like protrusion 212. The pus P1 then enters the working channel 10 and is sucked out of the body by negative pressure. Since the pressure of the flushing liquid is relatively low, the expandable portion 22 of the covering body does not deform or only expands slightly to the outside.

[0088] like Figure 1EWhen the external flushing liquid D enters the dynamic interlayer 200 with a relatively large pressure, the thin-walled expandable portion 22 of the covering body made of elastic material is rapidly filled and expanded while the wall thickness is reduced. The test shows that even if the flushing liquid D is ejected from each dynamic interlayer outlet 201, the expandable portion 22 of the covering body will be significantly filled and expanded, and the volume of the dynamic interlayer 200 will be increased, resulting in a widened flow channel and a significantly increased flow rate of the flushing liquid D. After expansion, due to the elastic restoring force of the expandable portion 22 of the covering body and the uneven flow of the flushing liquid in the dynamic interlayer 200, the expansion state of the expandable portion 22 of the covering body after filling will continuously change under a certain pressure, and the covering body The expandable portion 22 is in a fluctuating or peristaltic state, driving the outlet direction of the dynamic interlayer liquid outlet 201 to change continuously within a certain range, increasing the area of ​​the flushing area that the flushing liquid can directly reach, and improving the flushing effect; the far end of the expandable portion 22 of the covering body that is deformed forward drives the dynamic interlayer liquid outlet 201 to extend forward synchronously, achieving the effect of close dynamic flushing that is difficult to achieve with the prior art; the elastic restoring force of the expandable portion 22 of the covering body after expansion further increases the flushing pressure in the dynamic interlayer 200, and increases the flushing liquid flow rate of the dynamic interlayer liquid outlet 201, thereby further improving the flushing effect. The arrows in the figure indicate the flow direction of the flushing liquid, and the dotted line The inflatable part 22 of the covering body can block the opening of the external auditory canal E after being filled and expanded, so as to prevent the flushing liquid D and pus P1 from flowing out directly from the gap between the covering body 2 and the external auditory canal E, eliminate or reduce the operation of cleaning the pus P1 to flow to the facial skin, and save treatment and nursing time; the drape 2 that expands in a fluctuating or peristaltic manner can radially press the natural cavity mucosa or other body tissues in real time, play a deep massage role, promote lymphatic and venous return, and improve local blood supply; the covering body head 21 is provided with a tubular embedding section 211 that runs through from top to bottom, and the covering body head 21 is embedded in the opening 101 of the working channel of the endoscope catheter 1 by conforming to the shape. Fixedly connected to the endoscope catheter head 11, the covering head 21, especially the tubular embedded section 211, can be made of a relatively hard material to ensure that it is not easy to slip out from the opening 101 in the working channel of the endoscope catheter. The covering head 21 is tightly attached to the top 111 of the head of the endoscope catheter 1 and the part of the peeping component 112 is hollowed out or at least transparent; the distal end of the expandable portion 22 of the covering is connected to the edge of the covering head 21 by bonding, welding, etc. (the specific connection boundary line is omitted in the figure); the covering head 21 can also be made of elastic material, and the tubular embedded section 211 is embedded in the hard working channel opening 101 by interference fit and is not easy to slip out.

[0089] Since the expandable portion 22 of the covering is flexible, the portion of the covering head 21 covering the top end 111 of the endoscope catheter head is also flexible, and the endoscope catheter 1 is flexibly covered when entering the body, thereby significantly reducing the mechanical damage of the relatively rigid endoscope catheter 1, especially the endoscope catheter head 11, to the mucosa and other tissues in the body.

[0090] Furthermore, a hydrophilic coating is provided on at least the outer surface of the covering head 21 and / or the expandable portion 22 of the covering. Hydrophilic polymer materials such as polyvinyl pyrrolidone, polyacrylamide, polyethylene glycol, polyvinyl alcohol, etc. can be used. Composite antibacterial agents can also be added to the coating, which can significantly improve the lubrication properties of the covering 2 covering the endoscope catheter 1, reduce contact resistance, further reduce the mechanical damage to the mucosa and other body tissues during surgical operations, and be more conducive to the deformation of the expandable portion 22 of the covering and the fluctuation or peristalsis during the expansion process; the inner surface of the expandable portion 22 of the covering also has a hydrophilic coating, which also helps to quickly fill the flushing fluid D.

[0091] Figure 1F From another perspective, the expandable portion 22 of the covering body is shown to be filled with the flushing liquid D. The wall thickness of the expandable portion 22 of the covering body becomes thinner, and the position of the dynamic interlayer liquid outlet 201 protrudes forward.

[0092] Figure 1G A covering body 2 structure different from the above-mentioned figure is shown, specifically: a plurality of axial brush-like protrusions 212 extending toward the distal end are arranged around the edge of the covering body head 21, and radial brush-like protrusions 222 distributed around the covering body are arranged at the distal end of the covering body expandable portion 22, i.e., adjacent to the covering body head 21; when the radial brush-like protrusions 222 are closely adjacent to the dynamic interlayer liquid outlet 201, such as the spacing is less than 1 mm or even less than 0.2 mm, the flushing liquid D with a higher pressure enters the dynamic interlayer 200, and when the covering body expandable portion 22 is filled and expanded, the dynamic interlayer liquid outlet 201 can be driven to extend forward so that the flushing area is constantly changing, and the position of the radial brush-like protrusions 222 is constantly moving, achieving a better brushing effect, and coupled with the negative pressure suction in the working channel 10, the "integration of flushing, brushing, and suction" of the endoscope system is realized, and it is an ideal function of dynamic integration, which improves the treatment efficiency of the endoscope system and greatly saves costs.

[0093] Figure 1H It is shown that the annular covering sleeve portion 23 is provided with an inward protruding rib 231. When in use, the covering 2 is connected to the endoscope catheter 1 by embedding the protruding rib 231 of the covering sleeve portion 23 into the groove 121 on the outer surface of the middle portion 12 of the endoscope catheter. The two are easily separated. However, when the two are located in the sheath tube lumen 30, the outer surface of the annular covering sleeve portion 23 is in close contact with the inner wall of the sheath tube, and the covering sleeve portion 23 cannot be separated when the endoscope catheter 1 moves in the sheath tube lumen 30; and when the endoscope catheter 1 breaks free from the restraint of the sheath tube 3, it is easy to remove it from the endoscope catheter 1 by applying axial force on the outside of the annular covering sleeve portion 23; the difference from the aforementioned scheme also includes: a hollow area 213 is provided on the covering head 21, and the peeping component 112 of the top 111 of the head of the endoscope catheter 1 is located in the hollow area 213. In this case, the covering head 21 can be made of non-transparent material.

[0094] Fig. 1I A solution is shown: in order to more accurately attract waste material P during surgery, especially when the waste material P is far away from the opening 101 in the working channel of the endoscope catheter 1, a flexible tubular drape head protruding suction body 214 is provided on the drape head 21. The waste material P enters the protruding suction body cavity 2140 through the forward entrance 2141 of the drape head protruding suction body 214, and then enters the working channel 10, thereby achieving the effect of flexible approach and precise attraction. The drape head protruding suction body 214 can also be set to bend at different angles according to different application scenarios (figure omitted), so as to better eliminate possible dead corners of in vivo attraction.

[0095] The present invention covers both hard and soft medical endoscopes, and the peeping component 112 refers to a combination of one or more of an electronic or optical endoscope component, a pressure sensor, a temperature sensor, a body fluid conductivity sensor, a pH sensor, an ultrasonic probe, etc.; the endoscope catheter head described in the present invention refers to the portion or bendable portion that protrudes out of the opening in the sheath during operation, and many types of endoscope catheters 1 may be provided with a component that enables the endoscope catheter head 11 to be actively or passively bent (figure omitted), and the covering 2 is sleeved on at least part of the head 11 of the endoscope catheter 1, which means that the entire covering 2 is sleeved on the head 11 of the endoscope catheter 1, or the covering sleeve portion 23 is located on the middle portion 12 of the endoscope catheter 1, and the covering expandable portion 22 is sleeved on the head 11 of the endoscope catheter 1; the peeping component 112 is still exposed to the outside, which means that even if the covering head The part 21 wraps the top 111 of the head of the endoscope catheter 1, but the position of the peeping component 112 still needs to be vacated or covered with a translucent material, so that the function of the peeping component 112 is "exposed" and is not interfered with or significantly interfered with. When the peeping component 112 contains an ultrasound probe or a non-visible light probe, the covering head 21 does not interfere with its function; after the covering sleeve portion 23 is connected to the endoscope catheter 1, it can be synchronously displaced back and forth with the endoscope catheter 1; the static interlayer 300 means that when the endoscope catheter 1 passes through the sheath 3, whether the endoscope catheter 1 is stationary or moving, its internal gap volume is stable, as if it is in a static state; the dynamic interlayer 200 means that when liquid enters, the interlayer volume increases due to the outward expansion of the expandable part 22 of the covering, and decreases due to the retraction of the expandable part 22 of the covering. During use, the volume of the dynamic interlayer 200 will change dynamically.

[0096] The preset total area of ​​the dynamic interlayer liquid inlet 202 is larger than the preset total area of ​​the dynamic interlayer liquid outlet 201; this design is to increase the pressure difference between the inside of the dynamic interlayer 200 and the outside of the dynamic interlayer liquid outlet 201, increase the flow rate of the liquid flowing out of the dynamic interlayer liquid outlet 201, and give full play to the flushing and scouring effect of the liquid; there is a situation that even if the preset total area of ​​the dynamic interlayer liquid inlet 202 is smaller than the total area of ​​the dynamic interlayer liquid outlet 201, but the dynamic interlayer 200 is longer, especially when the part of the dynamic interlayer 200 extending from the opening 301 in the sheath is longer, the dynamic interlayer 200 has a large internal resistance, and the liquid can easily drive the expandable portion 22 of the covering body to expand and deform outward, and the elastic restoring force generated can increase the pressure difference between the inside of the dynamic interlayer 200 and the outside of the dynamic interlayer liquid outlet 201; in another case, since the top end 111 of the endoscope catheter 1 is easily squeezed and filled by the body tissue, the dynamic interlayer liquid outlet 201 will not be fully opened, resulting in the actual total area of ​​the dynamic interlayer liquid outlet 201 being smaller than the preset total area of ​​the dynamic interlayer liquid inlet 202; in actual use, even if the area of ​​a single dynamic interlayer liquid outlet 201 is very small, such as 0.1 mm 2 When the dynamic interlayer liquid outlet 201 is set on the expandable part 22 of the covering body, the area of ​​the dynamic interlayer liquid outlet 201 in the expanded state will also increase instantaneously, and the liquid injection direction will also change continuously, thereby increasing the flushing area; when placed in a relatively open space such as the bladder, renal pelvis, intestine and other relatively wide and variously shaped natural cavities, the expandable part 22 of the covering body will move in a peristaltic or waving and irregular manner, constantly squeezing and expanding the natural cavity mucosa, improving local blood supply, promoting venous and lymphatic return, and can also change the liquid outlet direction and liquid flow rate of the dynamic interlayer liquid outlet 201 to increase the flushing area.

[0097] Embodiment 2:

[0098] like Figure 2A-2E As shown, the application scenario of this example is an anorectal endoscope operation, the opening 301 in the sheath is located in the vicinity of the anus A0, and the endoscope catheter 1 and the covering 2 enter the anal canal cavity A30, as shown in FIG. Figure 2A As shown, the endoscope catheter head 11 enters the rectal ampulla A2, the unfilled drape expandable portion 22 contacts the anal canal wall A3 and is adjacent to the fecal debris P2 in the anal sinus A1, a plurality of drape dynamic interlayer radial outlets 201c distributed circumferentially are provided in the drape expandable portion 22 region, and a plurality of axial outlets 201a are provided adjacent to the drape head 21 region. Figure 2B); when flushing is started, the flushing liquid D enters the dynamic interlayer 200, the volume of the expandable portion 22 of the covering body increases to radially squeeze the anal canal wall A3, so that the anal canal cavity A30 expands, and the fecal debris P2 and other waste materials to be removed in the anal canal wall A3 and the anal sinus A1 are fully exposed, and the flushing liquid D is sprayed from each radial liquid outlet 201c. Combined with the negative pressure suction in the working channel 10, the patient's body position is adjusted during operation so that the anus A0 faces upward, and the fecal debris P2 and the like are flushed to the rectal ampulla A2 and then attracted into the working channel 10, and the axial liquid outlet 201a can clean the intestinal wall around the rectal ampulla A2; Figure 2C The figure shows an expanded state of the expandable portion 22 of the covering body. The expandable portion 22 of the covering body in a fluctuating or peristaltic state continuously and flexibly squeezes and massages the anal canal wall A3, promotes lymphatic venous return, improves arterial blood supply, and helps to relieve varicose veins of hemorrhoids; fully removes fecal debris P2 and harmful waste substances in the anal sinus A1, and can prevent and treat diseases such as anal sinusitis and anal fissure.

[0099] In order to fully and accurately flush the anal canal cavity A30 and prevent the flushing fluid D from entering the rectal ampulla A2 too much, Figure 2D A blocking scheme is shown, in which a protruding blocking body is used to block the area below the rectal ampulla A2. In this example, the protruding blocking body is an independent blocking bag 24 that can expand after being filled with fluid. The hollow independent blocking bag fluid delivery tube 241 protrudes through the opening 101 in the working channel of the endoscope catheter, and gas or liquid is filled into the inner cavity 240 of the independent blocking bag. The independent blocking bag 24 is filled and expanded to fit and seal with the intestinal wall at the rectal ampulla A2, and fecal debris P2 in the anal canal cavity A30 below the independent blocking bag 24 is flushed into and attracted into the working channel 10, and then cleared out of the body through the opening 102 outside the working channel, and will not be flushed into the rectal ampulla A2 and retained in the body.

[0100] Figure 2EAnother protruding occluding body structure is shown, specifically, a conjoined occluding capsule 25 protruding from the distal end of the covering body head 21, the conjoined occluding capsule 25 is connected to the covering body head 21 through the conjoined occluding capsule middle section 253, the conjoined occluding capsule middle section 253 plays a supporting role, and the conjoined occluding capsule middle section 253 is provided with a window 252. When negative pressure suction is started, fecal debris P2 enters the opening 101 in the working channel through the window 252, and the distal end of the hollow conjoined occluding capsule fluid delivery tube 251 passes through the endoscope working channel 10, protrudes from the opening 101 in the working channel and terminates at the conjoined occluding capsule 25. The conjoined occluding capsule fluid delivery tube 251 is provided with a window 252. The inner opening 2512 of the delivery tube is communicated with the inner cavity 250 of the conjoined sealing bag, and the proximal opening 2511 of the fluid delivery tube 251 of the conjoined sealing bag is located outside the tail portion 13 of the endoscope catheter. The gap between the fluid delivery tube 251 of the conjoined sealing bag and the working channel 10 is filled with a sealing plug S2, and the outer opening 102 of the working channel of the endoscope catheter 1 is opened on the hollow tail side branch 133. When in use, fluid can be injected into the inner cavity 250 of the conjoined sealing bag through the proximal opening 2511 of the fluid delivery tube 251 of the conjoined sealing bag to fill and expand it. The conjoined sealing bag 25 with increased volume can block the area below the rectal ampulla A2 (figure omitted).

[0101] Embodiment 3:

[0102] like Figures 3A-3C The present invention shows an application scheme of the endoscope system in the vagina N2. The external flushing liquid D enters the dynamic interlayer 200 from the opening 3002 of the hollow sheath side branch 3001 on the sheath tail 33, so that the inflatable part 22 of the covering body is filled and expanded to open the vagina N2, and the vaginal folds N3 become shallower. The water flow of the flushing liquid D washes away the inflammatory substance P3 on the vaginal mucosa. In order to prevent the inflammatory substance P3 from retrogradely entering the uterine cavity N4 through the cervical opening N0, this example shows another protruding blocking body structure, in which a flexible cervical blocking cap 26 protrudes distally from the head 21 of the covering body. The cervical blocking cap The cervical occluding cap 26 is in the shape of a mushroom head and is connected to the head of the covering body 21 through the neck 261 of the cervical occluding cap. The tubular neck 261 of the cervical occluding cap is provided with a neck opening 2611 of the occluding cap. The neck opening 2611 of the occluding cap is connected to the opening 101 in the working channel of the endoscope catheter through the inner cavity 2610 of the neck of the occluding cap. When in use, the cervical occluding cap 26 is first pressed against the cervix N1 under visual observation, the cervical opening N0 is blocked, and then the flushing liquid D is released, so that the inflammatory substance P3 detached from the vaginal mucosa enters the working channel 10 of the endoscope catheter through the neck opening 2611 of the occluding cap under negative pressure and is then removed out of the body. Figure 3CIt is shown that the flushing liquid D fills and expands the expandable portion 22 of the covering body protruding from the opening 301 in the sheath, and is also provided with a large number of radial liquid outlets 201c for flushing the vagina N2. The flexible cervical sealing cap 26 protruding from the distal end of the covering head 21 is provided with a depression that can wrap around the cervical opening, and the inflammatory substance P3 is attracted to the outside of the body through the narrow and long opening 2611 of the neck of the cervical sealing cap.

[0103] Embodiment 4:

[0104] like Figures 4A-4D The utility model shown in the figure is applied to the urinary system, and the laser lithotripsy treatment under endoscopy, the endoscope catheter 1 passes through the slender sheath tube 3 that can enter the ureter and enters the renal pelvis K1, and the laser optical fiber (not shown) passing through the working channel 10 of the endoscope catheter breaks the larger stones into a large number of stone fragments P4 under visual conditions, and the working channel 10 is simultaneously flushed with physiological saline, and the physiological saline flows from the opening 3002 of the sheath tube side branch 3001 to the outside of the body through the static interlayer 300 to take away the heat generated by the laser work and part of the stone fragments P4, at this time the covering body 2 can Without combining with the endoscopic catheter 1, when it is time to clean the stone debris P4, the endoscopic catheter 1 is pulled out from the sheath 3 and the covering 2 is sleeved thereon, and the endoscopic catheter 1 and the covering 2 then enter the renal pelvis K1 and the renal calyx K2 for operation; in this case, the direction of the fluid changes, and the external flushing fluid enters the dynamic interlayer 200 through the static interlayer 300 and the dynamic interlayer liquid inlet 202 from the sheath side branch opening 3002, and the inflatable part 22 of the covering is filled and inflated. In order to regulate the degree of expansion of different parts and the rhythm of fluctuation or peristalsis after expansion, Figure 4B The annular rib 223 protruding from the inner surface of the expandable portion 22 of the covering body is shown. A plurality of annular ribs 223 can be provided, and the protrusion degree can be set to different levels, so as to facilitate the expansion of the expandable portion 22 of the covering body in stages. Figure 4C The expanded portion 22 of the covering body is shown to have two expansion effects in the renal pelvis K1. The first expansion stage is adjacent to the top of the endoscope catheter head. After expansion, the renal calyx opening K0 is directly blocked. During the three-in-one process of flushing with water through the dynamic interlayer outlet 201, brushing off by the axial brush-like protrusion 212, and negative pressure suction by the working channel 10, the numerous stone fragments P4 in the renal calyx K2 are difficult to escape from the blocked renal calyx opening K0 to the renal pelvis K1, thereby achieving full cleaning of the stone fragments P4 under visual observation and eliminating the risk of residual stone fragments P4.

[0105] Figure 4AIt is shown that the outer opening 102 of the endoscope working channel is located on the endoscope catheter handle 14. The endoscope catheter handle 14 is also provided with a control rod 141 for adjusting the bending of the endoscope catheter head 11. The bending components such as the snake bone of the endoscope catheter head 11 are controlled by pulling wires (not shown). An easily removable external sealing body S3 is provided at the tail 33 of the sheath. The endoscope catheter 1 passes through the external sealing body S3 and enters the inner cavity of the sheath. When the covering body 2 needs to be installed, the endoscope catheter 1 is first withdrawn from most of the external sealing body S3, the external sealing body S3 is separated from the outer opening of the sheath, and then the covering body 2 is sleeved on the endoscope catheter head 11. When the endoscope catheter head 11 enters the inner cavity of the sheath, the external sealing body S3 is assembled on the outer opening of the sheath.

[0106] For example, if a sheath tube 3 with an outer diameter of 14Fr and an inner diameter of 12Fr is used to enter the ureter U, and the outer diameter of the endoscopic catheter 1 is 8.6Fr, the cross-sectional area of ​​the static interlayer 300 is much smaller than the cross-sectional area of ​​the dynamic interlayer 200 after the expandable portion 22 of the covering body is expanded (it can be dozens of times larger than the static interlayer after expansion in the renal pelvis K1), and the flow resistance generated by the flushing fluid flow channel area is significantly reduced, thereby ensuring the flushing effectiveness.

[0107] Under the prior art, the flushing fluid D flows out through the opening 101 in the working channel, and the powdered stone fragments (about 250 μm) can be sucked out of the body by negative pressure through the static interlayer 300, but the stone fragments P4 with a size of about 1 mm cannot enter the narrow static interlayer 300; in the utility model, the stone fragments P4 with a size of about 1 mm can be easily sucked into the relatively spacious endoscopic catheter working channel 10 (the inner diameter is usually greater than 1 mm), and the stone clearing effect is significantly better than the operation of discharging the stone fragments P4 from the static interlayer 300 in the prior art.

[0108] Figure 4D The left figure shows a thin-walled short tubular cladding head component 21e. In specific applications, the wall thickness can be preferably set between 0.1㎜-0.65㎜. The expandable portion 22 of the cladding is bonded or welded to the outer surface of the short tubular cladding head component 21e through a connecting section 224, and the dynamic interlayer liquid outlet 201 is opened on the expandable portion 22 of the cladding; the right figure shows another thin-walled folded short tubular cladding head component 21f. The expandable portion 22 of the cladding is clamped in the folded part of the folded short tubular cladding head component 21f through the connecting section 224, and the dynamic interlayer liquid outlet 201 can pass through the folded short tubular cladding head component 21f.

[0109] During specific use, the bending angle of the endoscope catheter head 11 and the flushing and suction pressure are adjusted according to the position of the stone debris P4 on the basis of visualization, and the stone debris in the renal calyx is completely cleaned by "flushing, suction and brushing" in an integrated manner; the utility model is also suitable for the removal of inflammatory substances, ablation products and other waste substances in various blind cavities such as the sinuses and appendix.

[0110] According to the conception of the utility model, in order to make the expandable portion 22 of the covering body show wavy or irregular creeping or significant expansion in a preset stage after being filled and expanded, the expandable portion of the covering body has structural and morphological characteristics such as corrugated tubular undulations, uneven wall thickness, stage-by-stage differences in wall thickness, and ribs with intermittent or continuous thread line distribution. The ribs can protrude inwardly and / or outwardly.

[0111] Embodiment 5:

[0112] like Figure 5A , Figure 5B , which is different from the above-mentioned embodiment, is that the covering body head 21 is an independent covering body head component 21a, which is circumferentially sealed and connected to the distal end of the covering body expandable part 22, and a hollow root section 215 is also provided at the distal end of the tubular embedding section 211 that can be embedded in the opening 101 in the working channel of the endoscope catheter 1 when in use, and the opening 2150 in the root section is located on the upper surface of the independent covering body head component 21a. Since the covering body head root section 215 with a larger outer diameter will not enter the working channel 10 of the endoscope catheter, a gap 203 at the top of the endoscope catheter head 11 is formed, and the flushing liquid can enter the top gap 203 and then be ejected out, thereby ensuring the stability of the flushing water flow; the flexible covering body head 21 hits When the internal mucosa or other biological tissue is touched, the flexible independent covering head component 21a can be deformed toward the top gap 203, playing a buffering and protective role, ensuring the safety of operation; the present scheme shows a hollow axial brush-like protrusion 212, and the inner cavity 2120 of the axial brush-like protrusion can pass through the flushing liquid. When in use, brushing and flushing are highly integrated, which is more conducive to cleaning waste materials, especially waste materials in the mucosal folds. The concept of synchronously spraying flushing liquid on the brush-like protrusion can also be applied to radial brush-like protrusions and oblique brush-like protrusions (figure omitted); the dynamic interlayer axial liquid outlet 201a, oblique liquid outlet 201b, and radial liquid outlet 201c of this example are all arranged on the independent covering head component 21a.

[0113] Figure 5C Another structure is shown, in which the top end 111 of the endoscope catheter head is connected to a tubular endoscope catheter head protruding suction body 113, and radial suction holes 1130 can be opened on the side wall of the endoscope catheter head protruding suction body 113. When in use, waste materials enter the opening 101 in the working channel of the endoscope catheter through the inner opening 1131 of the endoscope catheter head protruding suction body 113 and the radial suction holes 1130, avoiding blockage of the suction port and ensuring smooth negative pressure suction; the protruding suction body 113 can also be set to a curved shape (not shown) to facilitate the suction of waste materials located on the side of the top end of the endoscope head.

[0114] Figure 5DAnother structure is shown, specifically, the covering body head 21 is connected with a tubular covering body head upward extension section 216, and the covering body head upward extension section 216 is relatively Fig. 1I The drape head protruding suction body 214 described in the invention has a larger internal space and a larger suction opening, namely the upward extension section opening 2160 of the drape head, which increases the suction area; the outer surface of the endoscope catheter head 11 is provided with an annular recess 114, and the drape head 21 is provided with an inward protruding rib 217 of the drape head embedded in the annular recess 114, which connects the drape head 21 with the area of ​​the endoscope catheter head 11 close to the top end 111 of the head, so that the drape head 21 will not be separated from the endoscope catheter head 11 when the drape expandable portion 22 is filled and expanded.

[0115] Figure 5E The structure shown is that the drape head 21 is annular, and the inward protruding rib 217 of the drape head 21 is embedded in the annular recess 114 on the outer surface of the endoscope catheter head 11. The inward protruding rib 217 can be set continuously or intermittently, and the drape expandable portion 22 is connected to the drape head 21 as a whole. This design has no effect on the opening 101 in the working channel of the top end 111 of the endoscope catheter head and the operation of the peeping component 112, and the field of view and image clarity are not disturbed in any way.

[0116] Fig. 5F A further solution shown is that a multi-stage annular recess 114 is provided in the endoscope catheter head 11. When in use, the covering body head 21 can be assembled in the corresponding annular recess 114 as needed to adjust the distance between the dynamic interlayer axial liquid outlet 201a, the oblique liquid outlet 201b, the radial liquid outlet 201c and the top end 111 of the endoscope catheter head for more accurate flushing, which can be adjusted multiple times during one operation.

[0117] Figure 5G The figure shows a covering body head component 21b with an "L" cross section and an overall annular shape. The covering body expandable portion 22 is bonded or welded to the annular covering body head component 21b through a connecting section 224. The annular covering body head component 21b can be made of a relatively hard material, while the covering body expandable portion connecting section 224 is made of a flexible material to wrap the outer edge of the annular covering body head component 21b to avoid possible mechanical damage during use. The top of the endoscope catheter head 11 is provided with an assembly section 115 with a slightly reduced circumferential outer diameter. The annular covering body head 21 component is tightly fitted outside the endoscope catheter head assembly section 115. The stepped endoscope catheter head assembly section lower edge 1151 can limit the downward displacement of the annular covering body head component 21b. Figure 5HThe diagram shows the assembled state of the annular covering head component 21b and the endoscope catheter head 11; the annular covering head component 21b may also have a rectangular or arc-shaped cross-section, and the whole may be fitted in the top 111 area of ​​the endoscope catheter head.

[0118] Fig.5I Another partially inwardly protruding covering head component 21c that is annular as a whole is shown. The partially inwardly protruding covering head component 21c is provided with a plurality of inwardly protruding sections 218, and the endoscope catheter head 11 is provided with a plurality of edge notches 116 extending to the edge of the head top 111; Figure 5J During assembly, the protruding section 218 of the partially inwardly protruding covering body head component 21c is embedded in the edge notch 116 of the endoscope catheter and is tightly connected; the annular partially inwardly protruding covering body head component 21c is also provided with an inward notch 2180, which fits with the outer surface of the endoscope catheter head 11 after assembly, and the gap between the two forms a dynamic interlayer axial liquid outlet 201a, and the covering body expandable portion 22 is bonded or welded to the partially inwardly protruding covering body head component 21c through the connecting section 224. The partially inwardly protruding covering body head component 21c of this scheme can be made of relatively flexible materials; Figure 5J The state after the partially inwardly protruding covering head component 21c and the endoscope catheter head 11 are assembled is shown.

[0119] Figure 5K Another overall cap-shaped covering head component 21d is shown. The cap-shaped covering head component 21d is provided with a tubular embedding section 211 which passes through from top to bottom. When in use, the tubular embedding section 211 is inserted into the endoscope catheter working channel 10, and the covering expandable portion 22 is bonded or welded to the edge portion of the cap-shaped covering head component 21d through the connecting section 224. It can also be manufactured by secondary molding (including using the pre-molded cap-shaped covering head component 21d as an insert when molding the covering expandable portion 22).

[0120] Embodiment 6:

[0121] like Figures 6A-6CAs shown, the biggest difference from the previous embodiment is that the covering body 2 is directly used in combination with the endoscope catheter 1, and there is no need to cooperate with the sheath tube 3 to form an integrated medical endoscope for flushing and suction of the flushing liquid passage. The head 11 area of ​​the endoscope catheter 1 is provided with a peeping component 112, and the endoscope catheter 1 is provided with a working channel 10 that runs through the head and tail. The working channel 10 is provided with an inner working channel opening 101 that enters the body when in use and an outer working channel opening 102 of the outer part, a hollow covering body 2, the covering body 2 is composed of a covering body head 21, a covering body expandable part 22, and a covering body sleeve part 23. The covering body 2 is sleeved on the outside of the endoscope catheter 1 and wraps at least a part of the head 11 of the endoscope catheter. The inner working channel opening 101 of the endoscope catheter 1 and the peeping component 112 are still exposed to the outside, and the outer surface of the endoscope catheter 1 is connected to the covering body expandable part 22. The gap between the bulging parts 22 is the dynamic interlayer 200; the endoscope catheter 1 is provided with an interlayer side branch 1003 in addition to the working channel 10, and the liquid inlet channel 100 in the interlayer side branch 1003 is provided with an external opening 1002 and an internal opening 1001 of the liquid inlet channel. The internal opening 1001 of the liquid inlet channel located inside the endoscope catheter 1 is connected with the dynamic interlayer 200. When in use, external liquid enters the dynamic interlayer 200 through the external opening 1002, the liquid inlet channel 100, and the internal opening 1001 of the liquid inlet channel, and then flows out from the dynamic interlayer liquid outlet 201 of the covering body head 21 at the distal end. The flushing liquid D after flushing the internal tissue and the flushed waste materials are sucked into the working channel 10 through the internal opening 101 of the working channel of the endoscope catheter and then discharged to the outside of the body through the external opening 102 of the working channel. The arrow indicates the direction of liquid flow; Figure 6B The decomposition of the components shows that the inner cavity 220 of the drape at least accommodates the endoscope catheter head 11, and the connection between the drape sleeve 23 and the endoscope catheter 1 is sealed to the outside and easy to disassemble. The external sealing means that after the two are connected, the liquid inlet channel 100 of the endoscope catheter 1 connected to the outside is connected to the dynamic interlayer 200, and the liquid entering the liquid inlet channel 100 from outside the body can only enter the dynamic interlayer 200 and will not flow directly to other places; the connection that is easy to disassemble and install can make the drape 2 disposable, avoiding cross infection and repeated disinfection. Figure 6C The covering body 2 and the endoscope catheter 1 can also be tightly connected as one, and the covering body sleeve portion 23 is directly bonded or welded to the outer surface of the endoscope catheter 1, so that the opening 1001 in the liquid inlet channel inside the endoscope catheter 1 is connected with the dynamic interlayer 200, and the whole is disposable, which completely eliminates the risk of infection when reused due to disinfection errors.

[0122] Embodiment 7:

[0123] like Fig. 7AAs shown, the dynamic interlayer 200 is not filled. The difference between this example and the aforementioned scheme is that the covering body head and the endoscope catheter head 11 are in contact with each other so that the relative position can be easily changed. Specifically, a covering body head component 21b with an "L" cross section and an overall annular shape is shown. The annular covering body head component 21b is sleeved on the endoscope catheter head 11 area, and a circumferential gap 118 is left between the annular covering body head component 21b and the outer surface of the endoscope catheter head 11. An annularly distributed intermittent or continuous blocking platform 117 is provided below the endoscope catheter head top 111. The blocking platform 117 prevents the annular covering body head component 21b from falling out from the endoscope catheter head top 111 during use. When the dynamic interlayer 200 is filled, the circumferential gap 118 can also spray flushing liquid. Due to the existence of the circumferential gap 118, as shown in FIG. Figure 7B When the dynamic interlayer 200 is filled with the flushing fluid D, the pressure inside the dynamic interlayer 200 increases, driving the annular drape head component 21b to slide toward the endoscope catheter head top 111. The arrow indicates the moving direction of the drape head. Figure 7C The dynamic interlayer 200 is shown to be significantly filled, driving the annular covering head component 21b to slide to a position closer to the top end 111 of the endoscope catheter head. At the same time, the covering expandable portion 22 expands and deforms outward and forward. The positions of various dynamic interlayer liquid outlets 201 move forward with the annular covering head component 21b. The liquid outlet angles of the oblique liquid outlet 201b and the radial liquid outlet 201c also change with the expansion state of the covering expandable portion 22. The sprayed flushing liquid D can flush to In more areas, the radial liquid outlet 201c will also discharge liquid obliquely due to the change in the outlet angle; the blocking platform 117 prevents the annular covering head component 21b from escaping from the top end 111 of the endoscope catheter head during use, which means that the annular covering head component 21b can break through the blocking platform 117 with force during installation, and the pressure of the flushing liquid D entering the dynamic interlayer 200 is controlled within a certain range during use, and the force driving the annular covering head component 21b to move forward will not break through the blocking platform 117.

[0124] Fig.7D A structure of an endoscopic catheter 1 without a blocking platform is shown, which can ensure that the annular cladding head component 21b will not fall out of the endoscope catheter head top 111 during use by controlling the pressure in the dynamic interlayer 200, setting the corresponding material hardness of the cladding expandable portion 22, setting the axial length of the cladding expandable portion 22, etc.

[0125] Fig. 7EIt is shown that the covering body 2 is also provided with an axial brush-like protrusion 212 and a radial brush-like protrusion 222. In particular, the radial brush-like protrusion 222 will change its spatial position when the expandable portion 22 of the covering body is filled and expanded, so that it can act on a larger area. In addition, the positions of many dynamic interlayer liquid outlets 201 also change synchronously. Combined with the negative pressure suction in the working channel of the endoscope catheter, flushing, brushing and suction are efficiently and dynamically combined to completely remove waste materials.

[0126] The scheme of this embodiment enables the drape head 21 to axially reciprocate in the region of the endoscope catheter head 11 under the influence of the flushing liquid pressure when the endoscope system is in use. When the endoscope catheter 1 does not move, the flushing and brushing actions can act on the body tissues at different spatial positions, and at the same time, it can be observed that the waste materials are sucked through the opening 101 in the working channel of the endoscope catheter, thereby further regulating the movement degree of the drape head 21, and realizing a more dynamic and precise "flushing, brushing and sucking" operation.

[0127] The filling and expansion of the inflatable portion 22 of the covering body described in the present invention refers to the filling of the dynamic interlayer 200. The increase in the internal pressure of the dynamic interlayer 200 causes the thin-walled inflatable portion 22 of the covering body to expand outward, resulting in an increase in volume. The internal space of the dynamic interlayer 200 also increases synchronously with the filling and expansion of the inflatable portion 22 of the covering body. The filling of the inflatable portion 22 of the covering body and the filling of the dynamic interlayer 200 are the same concept; the covering head component refers to an independently formed component as the covering head 21, and the connection between the covering head components of various forms and the endoscope catheter head 11 area can be a threaded connection, specifically in the covering body The head component is provided with an internal thread line, which is installed on the corresponding thread matching structure in the endoscope catheter head 11 area by rotation; the covering head component can also be connected to the endoscope catheter head 11 area by an easily removable buckle; the covering head 21 can be integrally formed with the covering expandable part 22 as a component; the covering head 21, the covering expandable part 22, and the covering sleeve part 23 can also be integrally formed as a component; in addition to the brush-like protrusions, the covering expandable part 22 can also be made with a plurality of bumps, particles, spikes, etc., which can play a role in exfoliating waste materials adhering to the body tissues (figure omitted).

[0128] The positions of various tubes and components in the utility model are described as follows: the head portion is toward the distal end portion and enters into the body when in use; the tail portion is toward the proximal end portion and is at least partially located outside the body when in use; the inner opening is the distal opening, and the outer opening is the proximal opening; "forward" is toward the distal direction, and "backward" is toward the proximal direction.

[0129] The medical endoscope of the utility model significantly simplifies the operation steps, reduces tissue damage, greatly saves operation time and reduces treatment costs; it can be used for endoscopic medical operations in various natural cavities including the cardiovascular tract, respiratory tract, lacrimal duct, ear canal, reproductive tract, digestive tract, or in the third spaces such as the chest cavity and abdominal cavity of a living body; it can also be used for medical operations on the wound tracts of penetrating injuries, pathological sinus tracts, etc.; it can be specifically made into gastroscopes, duodenoscopes, bronchoscopes, nasopharyngeal endoscopes, ureteroscopes, cystoscopes, hysteroscopes, colposcopes, arthroscopes, etc.

Claims

1. A medical endoscope with integrated flushing and suction, wherein a peep assembly (112) is provided in the head (11) region of an endoscope catheter (1), the endoscope catheter (1) is provided with a working channel (10) running through the head and tail, the working channel (10) is provided with an inner working channel opening (101) for entering the body when in use and an outer working channel opening (102) for the outer part, and when in use, the top end (111) of the head of the endoscope catheter (1) can extend from the inner sheath opening (301) of the sheath (3) used in conjunction with the endoscope catheter (1), characterized in that: The invention also comprises a hollow covering body (2), the covering body (2) comprising a covering body head (21), a covering body expandable portion (22), and a covering body sleeve portion (23), the covering body (2) being sleeved on the outside of the endoscope catheter (1) and wrapping at least a part of the area of ​​the endoscope catheter (1), the gap between the outer surface of the endoscope catheter (1) and the covering body expandable portion (22) being a dynamic interlayer (200), and the gap between the sheath tube (3) and the outer surface of the endoscope catheter (1) being a static interlayer (300), when in use, the external liquid entering the static interlayer (300) first enters the dynamic interlayer (200) through the dynamic interlayer liquid inlet (202) directly formed or participated in by the covering body sleeve portion (23), and then flows out through the dynamic interlayer liquid outlet (201). The flushing liquid (D) and waste materials (P) after flushing the internal tissue are sucked into the working channel (10) through the inner opening (101) of the working channel of the endoscope catheter, and then discharged to the outside of the body through the outer opening (102) of the working channel.

2. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The preset total area of ​​the dynamic interlayer liquid inlet (202) is greater than the preset total area of ​​the dynamic interlayer liquid outlet (201) before the expandable portion (22) of the covering body is deformed and expanded.

3. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The covering body head (21) can be slidably sleeved on the outside of the endoscope catheter (1); when the endoscope catheter (1) is stationary, the covering body head (21) can be displaced along the axial direction of the endoscope catheter (1) under the drive of the flushing liquid (D).

4. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The outer surface and / or inner surface of the expandable part (22) of the covering body is provided with a hydrophilic coating with a lubricating effect.

5. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The endoscope catheter (1) is provided with a connection structure with the covering body (2), including one or more of the following methods: a discontinuous or continuous groove (121) on the outer surface of the middle part (12) of the endoscope catheter, an annular depression (114) or a partial depression of the endoscope catheter head (11), an external thread of the endoscope catheter head (11), an assembly section (115) with a slightly reduced outer diameter of the circumference downward from the top end (111) of the endoscope catheter head, and a discontinuous or continuous barrier (117) distributed in an annular manner below the top end (111) of the endoscope catheter head.

6. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The covering body head (21) and the covering body expandable part (22) of the covering body (2) are one integrally formed part; or the covering body head (21) and the covering body expandable part (22) of the covering body (2) are each independently formed parts, and the two are then tightly connected as one.

7. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The covering body sleeve portion (23) is provided with one or more of the following structures: a ring-shaped inwardly protruding rib (231), a thin-walled portion (232) for connecting with the expandable covering body portion (22), a notch that becomes a dynamic interlayer liquid inlet (202) after being bonded to an endoscope catheter (1), and a through hole that directly becomes a dynamic interlayer liquid inlet (202) without being bonded to an endoscope catheter (1).

8. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The sheath tube tail (33) is provided with a ring-shaped elastic sealing body (S1), and the elastic sealing body (S1) and the outer surface of the endoscope catheter (1) are in interference contact during relative movement, so that the static interlayer (300) is sealed from external liquid; or the inner surface of the sheath tube (3) in a local area of ​​the sheath tube tail (33) is tightly fitted with the outer surface of the endoscope catheter (1), so that the endoscope catheter (1) and the sheath tube (3) can perform relative movement while being sealed from external liquid.

9. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The expandable portion (22) of the covering body has one or more of the following structures and forms: uneven wall thickness, staged differences in wall thickness, inwardly protruding and / or outwardly protruding ribs distributed with discontinuous or continuous thread lines, and corrugated tube-like undulations.

10. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: It also includes a protruding suction body and / or a protruding blocking body arranged in the top end (111) area of ​​the endoscope catheter (1) head or the covering body head (21), and the protruding suction body and / or the protruding blocking body are straight or curved.

11. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The covering body head (21) and / or the covering body expandable part (22) are provided with one or more structures of brush-like protrusions, bumps, particles, spikes.

12. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The dynamic interlayer liquid outlet (201) is arranged on the expandable part (22) of the covering body and / or the head (21) of the covering body; the dynamic interlayer liquid outlet (201) is directly provided on the head (21) of the covering body and / or is formed by bonding the inward notch (2180) of the annular covering body head part (21c) with the outer surface of the endoscope catheter head (11).

13. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The drape head (21) is provided with a tubular embedding section (211) which can be embedded in an opening (101) in a working channel of an endoscope catheter, and the tubular embedding section (211) is used for fixing the drape head (21).

14. The flushing and suction integrated medical endoscope according to claim 1, characterized in that: The covering body head (21) is provided with a tubular embedding section (211) that can be embedded in the opening (101) in the working channel of the endoscope catheter. The distal end of the tubular embedding section (211) is also provided with a hollow root section (215). After assembly, a top gap (203) of the endoscope catheter head (11) is formed.

15. A covering (2) sleeved on the outside of an endoscope catheter (1), characterized in that: The covering body (2) is composed of a covering body head (21), a covering body expandable part (22), and a covering body sleeve part (23). The covering body (2) is sleeved on at least a partial area of ​​the head (11) of the endoscope catheter (1). After the covering body (2) is sleeved, the inner opening (101) of the working channel of the endoscope catheter (1) and the peeping component (112) can still play their corresponding functions. A dynamic interlayer (200) is formed between the outer surface of the endoscope catheter (1) and the covering body expandable part (22). When in use, the flushing liquid (D) first enters the dynamic interlayer (200) and then flows out through the dynamic interlayer liquid outlet (201). The flushing liquid (D) after flushing the internal tissue and the flushed waste materials (P) are sucked into the working channel (10) through the inner opening (101) of the working channel of the endoscope catheter, and then discharged to the outside of the body through the outer opening (102) of the working channel.

16. A flushing and suction integrated medical endoscope, wherein the head (11) region of the endoscope catheter (1) is provided with a spying assembly (112), the endoscope catheter (1) is provided with a working channel (10) running through the head and tail, the working channel (10) is provided with an inner working channel opening (101) for entering the body during use and an outer working channel opening (102) for the outer part, characterized in that: The invention also comprises a hollow covering body (2), the covering body (2) comprising a covering body head (21), a covering body expandable part (22), and a covering body sleeve part (23), the covering body (2) being sleeved on the outside of the endoscope catheter (1) and covering at least a part of the area of ​​the endoscope catheter head (11), and the gap between the outer surface of the endoscope catheter (1) and the covering body expandable part (22) being a dynamic interlayer (200); the endoscope catheter (1) is also provided with a liquid inlet connected to the outside. The channel (100) is connected to the dynamic interlayer (200). When in use, the flushing liquid (D) enters the dynamic interlayer (200) from the liquid inlet channel (100) and then flows out from the dynamic interlayer liquid outlet (201). The flushing liquid (D) after flushing the internal tissue and the flushed waste materials (P) are sucked into the working channel (10) through the inner opening (101) of the working channel of the endoscope catheter, and then discharged to the outside of the body through the outer opening (102) of the working channel.

17. The flushing and suction integrated medical endoscope according to claim 16, characterized in that: The covering body head (21) can be slidably sleeved on the outside of the endoscope catheter (1); when the endoscope catheter (1) is stationary, the covering body head (21) can be displaced along the axial direction of the endoscope catheter (1) under the drive of the flushing liquid (D).

18. The flushing and suction integrated medical endoscope according to claim 16, characterized in that: The connection between the covering body sleeve portion (23) and / or the covering body head portion (21) and the endoscope catheter (1) is easily detachable.

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