Expansion and suction integrated medical endoscope catheter

Abstract

An expansion and suction integrated medical endoscope catheter is provided with a working channel penetrating through the head and the tail, the inner space of the working channel is divided into an upper isolator cavity and a lower isolator cavity by a sheet-shaped isolator, a center hole for an optical fiber or a guide wire to penetrate through is formed in the center area of the isolator, and a plurality of intercepting holes are formed outside the center hole. A snooping assembly accommodating hole is formed in the edge area of the isolator, and the snooping assembly is embedded in the accommodating hole or moves up and down along the accommodating hole; the endoscope further comprises a head bag body, the head bag body is connected with the outer surface of the endoscope catheter in a sealed mode through a head bag body sealing part, a head bag body inner cavity is jointly formed by a head bag body free part and the outer surface, wrapped by the head bag body free part, of the endoscope catheter, and a first fluid channel is formed in the endoscope catheter. During use, fluid is injected through the outer opening of the first fluid channel outside the body, and the fluid enters the inner cavity of the head capsule through the inner opening of the first fluid channel to drive the free part of the head capsule to expand and deform.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of dilatation suction integrated medical endoscope catheter, belong to medical instrument product technical field. BACKGROUND

[0002] The existing medical endoscope catheter is used to enter natural cavity or pathological sinus channel in human body, and operations such as biopsy, tissue ablation, electrocision, laser lithotripsy are carried out.If the natural cavity is narrow, the hard tip edge of the endoscope catheter head expands the natural cavity radially, which inevitably damages the mucosa tissue;And the waste materials such as secretions, blood clots and stone debris adhere to the surface of the mucosa tissue and are difficult to clean.Some waste materials are located in blind cavities such as nasal sinus, appendix and kidney calyx, and the cleaning of waste materials usually requires the use of flushing fluid and negative pressure suction, which has poor flushing flexibility and small flushing area;During the treatment of urinary system stones, the recurrence rate of kidney stone patients after treatment is high, and one of the main reasons for the high recurrence rate of stones is that the stones are not completely cleaned during treatment, and many stones smaller than 3mm are left in the patient's body.Currently, it is time-consuming and laborious to use negative pressure technology to attract small size stone debris or even stone powder to the outside of the body, and the stone cleaning field is poor during the operation, the operation frequency is extremely high, the operation difficulty is large, and the operation efficiency is low, the whole process of laser lithotripsy is time-consuming, and it is difficult to completely avoid the high temperature and high pressure damage of urinary system during the stone crushing process, and small stone clumps are also easy to block the working channel of the endoscope catheter, which may even cause life danger in serious cases. SUMMARY

[0003] To avoid damage to the mucosa tissue by the medical endoscope catheter, and to perform synchronous flushing and suction under visualization to completely clean the waste materials during endoscopic surgery, the utility model provides a dilatation suction integrated medical endoscope catheter, which can safely enter the operation area through flexible expansion, and ensure that the waste materials are smoothly discharged outside when visualizing flushing and suction.

[0004] The utility model is implemented as follows:

[0005] The medical endoscope catheter is provided with a working channel penetrating the head and tail, the working channel has an opening in the body when used and at least one opening outside the body, a sheet-shaped isolation body divides the internal space of the working channel into an upper cavity and a lower cavity, the center area of the isolation body is provided with a central hole for passing through an optical fiber or a guide wire, a plurality of interception holes are arranged outside the central hole, and the edge area of the isolation body is provided with a viewing assembly accommodating hole, and the viewing assembly is embedded in the accommodating hole or moves up and down along the accommodating hole.

[0006] Preferably, the isolation body is transparent.

[0007] A specific structure of the head capsule, the free part of the head capsule is provided with a plurality of outward liquid outlets on the side close to the top end of the head of the endoscope catheter.

[0008] In order to make the water flow into the upper cavity of the isolation body conveniently, at least one inward liquid outlet is opened on the inner surface of the wall of the endoscope catheter covered by the free part of the head capsule.

[0009] In order to better flush, a second fluid passage is arranged in the wall of the endoscope catheter, and the opening of the second fluid passage is arranged at the top end of the head of the endoscope catheter.

[0010] In order to facilitate the up and down movement of the viewing assembly to realize the visualization of operation, the viewing assembly is connected with a non-fixed tube with fixed or movable position, the viewing assembly is arranged at the distal end of the tube, the tube is arranged in a tube channel in the wall of the endoscope catheter, the viewing assembly is arranged outside the tube channel opening at the bottom of the lower cavity of the isolation body, the tube channel opening is arranged on the operating handle of the endoscope catheter, and part of the tube is arranged outside the tube channel opening.

[0011] A positional relationship between the viewing assembly and the accommodating hole, the viewing assembly is embedded in the accommodating hole but is not constrained by the accommodating hole, and the viewing assembly can pass through the accommodating hole to enter the upper cavity of the isolation body or retreat into the lower cavity of the isolation body.

[0012] A specific structure of the isolation body, a plurality of groove-shaped interception holes are arranged on the isolation body, the groove-shaped interception holes are distributed radially with the central hole as the origin, and at least one groove-shaped interception hole allows the optical fiber to pass through.

[0013] In order to facilitate the entry of the optical fiber into the center hole or the interception hole of the isolation body, the isolation body is funnel-shaped and points to the lower cavity of the isolation body or the isolation body is conical and protrudes towards the upper cavity of the isolation body.

[0014] In order to make the peeping assembly freely pass through the containing hole, at least the containing hole area of the isolation body is flexible.

[0015] Preferably, at least one of the inner and outer surfaces of the endoscope catheter is attached with a hydrophilic coating, which can significantly reduce the friction generated when the endoscope catheter contacts the mucosa tissue after being hydrated, and reduce mucosa damage.

[0016] The utility model discloses the beneficial effect is:

[0017] 1. The endoscope catheter working channel accesses negative pressure, and the water flow enters the upper cavity of the isolation body to continuously discharge the waste material to the body through the working channel, which improves the efficiency and eliminates the risk of high-temperature damage during the operation, integrates flushing, suction, isolation and removal of waste material into a complete system solution.

[0018] 2. When the present solution is applied to the field of urinary laser lithotripsy, compared with the traditional lithotripsy system, the endoscope catheter and the sheath tube need to leave a certain gap (generally 0.5-0.75mm) to facilitate the cooling and flushing water flow to carry the stone debris out of the body, which results in the need to use a larger diameter sheath tube or a smaller diameter endoscope catheter, which increases the damage to the human mucosa tissue during the insertion into the human body or causes the working channel cross-sectional area of the endoscope catheter to be correspondingly smaller. The utility model uses the gap between the endoscope catheter and the sheath tube (mirror-sheath gap) to transport the water flow, and uses the working channel of the endoscope catheter to suck the water flow and the stone debris to the body, the mirror-sheath gap only needs to be kept small, and the diameter of the working channel of the endoscope catheter is increased, which further improves the lithotripsy efficiency.

[0019] 3. The head capsule can be filled with liquid or gas and other fluids. When the head capsule lumen is filled with liquid, the head capsule free part deforms and expands, which can radially expand the narrow natural cavity such as the narrow urinary tract, ureter and renal calyx orifice, etc. Compared with the radial rigid expansion during the axial advancement of the traditional endoscope catheter, the radial flexible expansion of the head capsule avoids the shear damage to the mucosa of the natural cavity.

[0020] 4. After the head capsule free part is filled and expanded, the natural cavity openings such as the nasal sinus opening and the renal calyx orifice can be plugged, which avoids the flushing liquid and harmful waste material from flowing out of the gap between the head capsule and the natural cavity opening, and eliminates or reduces the risk of pollution and damage caused by the waste material flowing to the outside of the natural cavity opening.

[0021] 5. The sheet-shaped isolator divides the internal space of the working channel of the endoscope catheter into an upper cavity and a lower cavity, and is provided with a central hole and an intercepting hole, and the isolator blocks large-sized waste materials in the upper cavity, and small-sized waste materials are taken out of the body by water flow, so that high-efficiency flushing and suction functions are realized, and the working channel of the endoscope catheter is prevented from being blocked, and smoothness in the working process is ensured; and isolators of different specifications can be configured, and the central hole and the intercepting hole of the isolator can be set to have different aperture sizes according to actual requirements, so as to isolate waste materials of different sizes.

[0022] 6. The isolator in the scheme is provided with a peeping assembly accommodating hole, the peeping assembly can be embedded in the accommodating hole and can move up and down through the accommodating hole, and functions such as flushing and suction are realized under direct visualization; because the peeping assembly can move up and down through the accommodating hole, when the peeping assembly is located in the lower cavity, the peeping assembly can accurately guide the optical fiber or guide wire to pass through the central hole or the intercepting hole, when the peeping assembly is located in the region adjacent to the accommodating hole, the peeping assembly can accurately guide the upper cavity to contact the waste materials for removal, and when the peeping assembly is located in the region adjacent to the opening of the working channel, the peeping assembly can assist in observing the condition of the natural cavity.

[0023] 7. When treating ureteral calculi, especially calculi falling into the ureter within one week, the head capsule is inflated to dilate the local ureter to remove the impaction of the calculi, and the calculi are adsorbed by the negative pressure of the working channel, and the calculi can be removed from the ureter without laser release. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings of the utility model are as follows:

[0025] Figure 1A : Partial cutaway perspective view of the endoscope catheter and the matched sheath in Example 1

[0026] Figure 1B : Partial cutaway view of the endoscope catheter in Example 1

[0027] Figure 1C : Partial cutaway view of the head capsule of Example 1 which has not been inflated

[0028] Figure 1D : Partial cutaway view of the head capsule of Example 1 which has been inflated to adhere to the mucosal tissue

[0029] Figure 1E : Partial cutaway view of the optical fiber of Example 1 which is aligned with the calculi

[0030] Figure 1F : Partial cutaway view of the isolator of Example 1 which is funnel-shaped and is directed to the lower cavity

[0031] Figure 1G : Partial cutaway view of the isolator of Example 1 which is conical and protrudes to the upper cavity

[0032] Figure 2A : cross-sectional view of a fiber alignment stone

[0033] Figure 2B : cross-sectional view of a stone after it has been broken up

[0034] Figure 3A : partial cross-sectional view of a scope assembly in a receiving hole

[0035] Figure 3B : partial cross-sectional view of a scope assembly extending out of an opening in a working channel

[0036] Figure 3C : perspective view of an embodiment 3 from one angle

[0037] Each arrow in the above figures indicates the direction of water flow DETAILED DESCRIPTION

[0038] The following embodiments are not limiting of the scope of the present application and are described in the context of a urinary stone procedure:

[0039] Embodiment 1:

[0040] As Figure 1AAs shown, the expansion suction integrated medical endoscope catheter 1 is provided with a working channel 10 extending through the head and tail, the working channel 10 has a working channel inner opening 101 entering the body during use and at least one working channel outer opening 102 located outside the body, the working channel inner opening 101 is arranged at the top end 111 of the head of the endoscope catheter, the elongated endoscope catheter 1 includes a head 11, an intermediate part 12 and a tail 13, the tail 13 of the endoscope catheter is connected with a handle H for the user to hold and operate, the handle H is hollow inside and continuous with the working channel 10 of the endoscope catheter 1, the handle H is also provided with a working channel side branch H3 for the guide wire or optical fiber to pass through and a handle side branch H2 connected with the negative pressure suction device, the working channel outer opening 102 is located on the handle side branch H2, the handle H is also provided with a regulating body H1 for adjusting the bending degree and / or bending direction of the head 11 of the endoscope catheter 1, the working channel 10 of the endoscope catheter is used for the medical tool to pass through in the use state, and provides guidance, protection and other corresponding functions for the medical tool located therein, such as various ablation catheters, guide wires, stone baskets, optical fibers, ultrasonic catheters and the like; and a sheath tube 3 matched with the endoscope catheter for use, the sheath tube 3 is sleeved outside the endoscope catheter 1 during use, the hollow sheath tube 3 has a sheath tube lumen (not shown in the figure), the elongated sheath tube 3 includes a sheath tube head 31, a sheath tube intermediate part 32 and a sheath tube tail 33, the sheath tube 3 is provided with a sheath tube inner opening 301 entering the body during use and a sheath tube outer opening 302 located outside the body, when the endoscope catheter 1 is used in cooperation with the sheath tube 3, the top end 111 of the head of the endoscope catheter passes through the sheath tube lumen and exits from the sheath tube inner opening 301, the sheath tube tail 33 is also connected with a Y-shaped sheath tube joint 3a in this embodiment, the sheath tube joint 3a is provided with a sheath tube side branch 34, the sheath tube side branch 34 can be connected with the perfusion device (not shown in the figure), when the sheath tube side branch 34 is connected with the perfusion device, the external fluid can enter the sheath tube lumen through the sheath tube side branch lumen, and then enter the human body through the gap between the endoscope catheter and the sheath tube; various treatment and diagnosis instruments can be placed in the working channel of the endoscope catheter during use, such as various ablation catheters, biopsy forceps, balloon catheters, laser optical fibers and the like, and the waste material at the treatment position needs to be removed after completing the stage operation.

[0041] As Figures 1A-1EAs shown, the medical endoscope catheter 1 in this embodiment is provided with a working channel 10 extending through the head and tail, the working channel 10 has a working channel inner opening 101 entering the body during use and at least one working channel outer opening 102 located outside the body, a sheet-shaped isolation body 2 divides the internal space of the working channel 10 into an upper isolation body cavity 1001 and a lower isolation body cavity 1002, the central region of the isolation body 2 is provided with a central hole 200 for passing an optical fiber L or a guide wire, and a plurality of interception holes 201 are provided outside the central hole 200, the edge region of the isolation body 2 is provided with a viewing assembly 112 accommodating hole 202, and the viewing assembly 112 is embedded in the accommodating hole 202 or moves up and down along the accommodating hole 202; further comprising a head capsule 4, the head capsule 4 is located in the region close to the head top end 111 of the endoscope catheter head 11, the head capsule 4 is sealingly connected to the outer surface of the endoscope catheter 1 through a head capsule sealing portion 41, and the head capsule free portion 42 and the outer surface 1112 of the endoscope catheter 1 covered thereby jointly form a head capsule lumen 40, the endoscope catheter 1 is provided with a first fluid passage 16, the first fluid passage 16 is provided with a first fluid passage inner opening 161 communicating with the head capsule lumen 40 and a first fluid passage outer opening 162 communicating with the outside, and the handle H is further provided with a first fluid passage side branch H4, the first fluid passage outer opening 162 communicating with the outside is located on the first fluid passage side branch H4, and during use, fluid is injected through the first fluid passage outer opening 162 located outside the body, the fluid enters the head capsule lumen 40 through the first fluid passage inner opening 161, and drives the head capsule free portion 42 to expand and deform; in this embodiment, negative pressure is introduced into the working channel of the endoscope catheter, cooling and flushing water flow is injected into the gap between the endoscope catheter 1 and the sheath 3, and after entering the human body, the water flow enters the upper isolation body cavity to continuously suck the heat generated by the laser and the stone debris to the outside of the body, thereby improving the stone clearing efficiency and eliminating the risk of high temperature damage during the operation, compared with the traditional stone clearing system, the endoscope catheter and the sheath need to leave a certain gap (generally 0.75mm) to bring the cooling and flushing water flow to carry the stone debris out of the body, which results in the need to use a larger diameter sheath or a smaller diameter endoscope catheter, increasing the damage to the body's mucosal tissue during insertion or causing the working channel of the endoscope catheter to correspondingly decrease in cross-sectional area. The present embodiment uses the gap between the endoscope catheter and the sheath (the mirror-sheath gap) to transport the water flow, and uses the working channel of the endoscope catheter to suction the water flow and stone debris out of the body. The mirror-sheath gap only needs to be kept small, the diameter of the working channel of the endoscope catheter is increased, and the stone clearance efficiency is further improved. The head capsule 4 is preferably made of a flexible material with good compliance, such as silicone rubber, latex, thermoplastic elastomer (non-compliant, semi-compliant materials can also be used); further, a hydrophilic coating can be added to the head capsule 4, the outer surface of the endoscope catheter, and the outer surface of the sheath, such as using polyvinylpyrrolidone, polyacrylamide, polyethylene glycol, polyvinyl alcohol, and other hydrophilic polymer materials, and an antibacterial agent can also be added to the coating, which significantly improves the lubricity, reduces the contact resistance, and further reduces the mechanical damage to the mucosa and other internal tissues during surgical operation.

[0042] The spy component 112 in this embodiment is connected with a non-fixed tube 1121 which is fixed or movable, the spy component 112 is located at the distal end of the tube 1121A which is locally bulged, the tube is located in the tube channel 113 in the wall of the endoscope catheter 1, the spy component 112 extends out of the opening 1131 in the tube channel at the bottom of the lower cavity 1002 of the isolation body, the outer opening 1132 of the tube channel is located on the handle H of the endoscope catheter 1, part of the tube 1121 is located outside the outer opening 1132 of the tube channel, specifically, the tube channel is a hollow pipe inside the working channel of the endoscope catheter, of course, the tube channel can also be a hollow pipe in the wall of the endoscope catheter which protrudes to the working channel or the gap between the sheath, the spy component 112 has a certain position relationship with the accommodation hole 202, the spy component 112 is embedded in the accommodation hole 202 but is not constrained by the accommodation hole 202, the spy component 112 can pass through the accommodation hole 202 to enter the upper cavity 1001 of the isolation body or retreat into the lower cavity 1002 of the isolation body, for example, the spy component 112 and the accommodation hole 202 have a gap, or at least the region of the accommodation hole 202 of the isolation body 2 is flexible, even if the spy component 112 and the accommodation hole 202 have an interference contact without a gap, the flexible accommodation hole 202 can also make the spy component 112 pass freely; compared with the traditional spy component which is arranged in the adjacent region of the top end 111 of the endoscope catheter, the isolation body in this scheme is provided with a spy component accommodation hole, the spy component can be embedded in the accommodation hole and can also move up and down through the accommodation hole, and the functions of lithotripsy, stone collection, and suction of stone fragments can be realized under visualization, when the spy component is located in the lower cavity of the isolation body, the fiber can pass through the center hole or the interception hole under the accurate guidance of the spy component, when the spy component is located in the adjacent region of the accommodation hole, the upper cavity of the isolation body can accurately contact the stones for lithotripsy, stone collection, etc., when the spy component is located in the adjacent region of the working channel opening, the stone condition in the natural cavity and the calyx and renal pelvis can be observed; and in this embodiment, the original stones can be adsorbed and moved to a position which is beneficial to laser lithotripsy by using negative pressure through the working channel opening of the endoscope catheter, for example, the stones are moved from the lower calyx to the upper calyx, which reduces the dependence on the operation space during lithotripsy and replaces the traditional stone basket, and the large volume of stone fragments generated during the laser lithotripsy process can be retained in the upper cavity of the isolation body and be quickly moved to the outside of the body at one time, which greatly saves the operation time.

[0043] The isolation body 2 in the embodiment is provided with a plurality of slot-shaped interception holes 201, which are distributed radially with the center hole 200 as the origin, at least one slot-shaped interception hole 201 allows the optical fiber L to pass through, preferably, the isolation body 2 is transparent; that is, the optical fiber L can pass through from the center hole 200 or the slot-shaped interception hole 201, so as to more accurately perform the laser lithotripsy operation, the slot-shaped interception holes 201 are radially distributed, and the cross-sectional area of each slot-shaped interception hole is smaller than that of the inner opening of the working channel of the endoscope catheter, the stone debris passing through the slot-shaped interception hole cannot block the working channel of the endoscope catheter, and the stone retained in the cavity of the negative pressure basket can be taken out to the outside of the body together with the negative pressure basket; the isolation body can be provided in different specifications, and the center hole and the interception hole on the isolation body are provided with different aperture sizes according to actual needs, so as to isolate different volumes of stone debris, for example, a large-diameter endoscope catheter can be configured with an isolation body with a slightly larger size interception hole, the isolation body blocks the larger stones in the cavity of the isolation body, and the smaller stone debris is taken out of the body by the water flow, which can realize efficient flushing and suction of the stone and prevent the large stone from blocking the working channel of the endoscope catheter, thereby ensuring the smoothness of the stone.

[0044] As shown in Figure 1C When the dilation and suction integrated medical endoscope catheter 1 travels to the narrow place or the place where the catheter is not easy to travel in the natural cavity, if it is directly forced to pass through the natural cavity such as the ureter U narrow place U0, it is inevitable to cause shear damage to the natural cavity tissue mucosa, in the figure, the ureter U narrow place U0 mucosa tissue inner surface U1 is embedded with a stone S, and the inner opening 101 of the working channel of the endoscope catheter is still a certain distance away from the stone S, at this time, the fluid is injected into the head capsule inner cavity 40 from the outside through the first fluid passage 16 and the first fluid passage inner opening 161, the inflatable head capsule free part 42 is deformed and expands outward, and the narrow natural cavity such as the narrow urethra, ureter and renal calyx is radially expanded, because the expanded mucosa tissue inner surface U1 cannot quickly recover to the original state, the endoscope catheter can be made to travel close to the stone S, compared with the rigid expansion in the axial movement of the traditional endoscope catheter, the radial flexible expansion of the head capsule 4 avoids the shear damage to the natural cavity mucosa in the process of the endoscope catheter traveling, and the fluid injected into the head capsule inner cavity can be a liquid or a gas; as shown in Figure 1D The fluid enters the head capsule inner cavity to expand and deform the head capsule free part 42, and then flexibly expands the ureter U narrow place U0, at this time, the specific position of the stone can be observed by means of the exploring assembly 112 at the containing hole, so as to guide the inner opening of the working channel of the endoscope catheter to be close to or close to the stone S; as shown in Figure 1EAs shown, the head capsule free part is radially flexible to expand the ureter U, the mucosa tissue does not tightly wrap the stone S on the inner surface U1, the optical fiber L penetrates the central hole 200 on the isolation body 2 from the lower cavity 1002 of the isolation body 2 to the upper cavity 1001 of the isolation body 2, and penetrates into the upper cavity 1001 of the isolation body 2 until being adjacent to or touching the stone S so as to release energy to break the stone into stone debris or stone powder, wherein the smaller size stone powder enters the lower cavity 1002 of the isolation body along with the water flow through the slot-shaped interception hole 201, and the larger size stone debris is blocked in the upper cavity 1001 of the isolation body and can be taken out of the body along with the endoscope catheter, at this time, the water flow between the endoscope catheter and the sheath pipe is continuously introduced into the upper cavity of the isolation body due to the negative pressure suction source, and the small size stone debris and even the stone powder and the heat energy generated by the laser are continuously discharged to the outside of the body through the working channel 10 of the endoscope catheter, so that the laser stone breaking, flushing, suction and stone taking are integrated into a complete system scheme, the stone breaking efficiency is greatly improved, and the whole process is free of high-temperature water flow contact with the mucosa of the urinary tract, and the risk of high-temperature damage in the operation is completely eliminated.

[0045] As shown in Figure 1F , 1G , the isolation body 2 is funnel-shaped and penetrates into the lower cavity 1002 of the isolation body 2 or the isolation body 2 is conical and protrudes towards the upper cavity 1001 of the isolation body 2; Figure 1F As shown, the isolation body 2 is funnel-shaped and penetrates into the lower cavity 1002 of the isolation body 2, so that the guiding optical fiber L is easy to penetrate into the slot-shaped interception hole 201 and deviate from the working channel inner opening 101, the stone S in the deviated position is easy to be touched, and the volume of the upper cavity 1001 of the isolation body 2 is increased to accommodate more stone debris and improve the one-time removal efficiency; Figure 1G As shown, the isolation body 2 is conical and protrudes towards the upper cavity 1001 of the isolation body 2, so that the guiding optical fiber L is easy to accurately penetrate through the central hole 200.

[0046] The utility model covers medical endoscope hard mirror and soft mirror, the peep component is one or more combination of electronic or optical endoscope component, pressure sensor, temperature sensor, body fluid conductivity sensor, pH sensor, ultrasonic probe.

[0047] Example 2:

[0048] As shown in Figure 2A , 2BThe difference between the embodiment 1 is that the head capsule free part is provided with a plurality of outward liquid outlets 401 on the side close to the tip of the endoscope catheter head, and the head capsule lumen 40 is in communication with the outside through the plurality of outward liquid outlets 401, that is, the fluid can flow out of the natural cavity through the outward liquid outlets 401, and at this time the increased head capsule lumen pressure will spray the fluid to the natural cavity through the outward liquid outlets 401, further expanding and lubricating the narrow part of the natural cavity, and the liquid and flushing materials after flushing are sucked into the working channel 10 through the inner opening of the working channel of the endoscope catheter 1, and then discharged to the outside of the body through the outer opening of the working channel, and a negative pressure pipeline and related negative pressure suction device (not shown) need to be connected to the outer opening of the working channel during use; as Figure 2A As shown, when the dilatation and suction integrated medical endoscope catheter travels to the narrow part in the natural cavity (such as ureter U), the fluid is injected into the head capsule lumen 40 from the outside of the body through the first fluid passage 16 and the first fluid passage inner opening 161, and the inflatable head capsule free part 42 deforms and expands outward, radially expanding the narrow ureter, at this time the inner opening of the working channel of the endoscope catheter is tightly attached to the stone S, and the laser fiber L is aligned with the stone; as Figure 2B As shown, the original stone in the ureter U is broken into stone chips and stone powder by the energy released by the optical fiber, among which the slightly large size stone chips S1 are blocked on the isolation body upper cavity 1001 by the isolation body 2, and the smaller size stone powder S2 is carried to the isolation body lower cavity 1002 by the flushing liquid through the interception hole 201, and the liquid continuously carries the heat energy generated by the laser and the stone powder S2 to the outside of the body through the working channel 10 of the endoscope catheter; when the tip of the endoscope catheter enters the renal calyx, the head capsule free part can block the renal calyx after expansion and dilation, and many stone chips in the renal calyx are difficult to escape from the blocked renal calyx to other areas of the renal pelvis in the process of water flow flushing and working channel negative pressure suction at the outward liquid outlet, realizing sufficient cleaning of the stone chips under the vision and eliminating the risk of stone chip residue.

[0049] In this embodiment, at least one inward liquid outlet 402 is opened on the inner surface 1111 of the wall of the endoscope catheter 1 covered by the head capsule free part 42, and the first fluid passage 16 is in communication with the working channel 10 of the endoscope catheter through the plurality of inward liquid outlets, when the first fluid passage is injected with liquid, the liquid can be ejected from the inward liquid outlet 402 to impact the area of the working channel inner opening 101, avoiding the blockage of the working channel inner opening 101 by large stones, inflammatory secretions, etc., and also assisting in increasing the perfusion water flow in the working channel 10 for improving the flushing and cooling effect.

[0050] The head capsule inner cavity of the head capsule can be filled with a fluid such as a flushing liquid, a lubricant such as a lubricating agent, an agent such as an afuzosin that increases the extensibility of the ureter; when filled with a fluid such as a flushing liquid, it can play a role in expanding the free part of the head capsule, flushing, lubricating the natural cavity, cooling during laser lithotripsy, etc.; when filled with a lubricant such as a lubricating agent, the lubricating agent flows out through the outward liquid outlet on the expanded and dilated free part of the head capsule, which can lubricate the natural cavity to make the endoscope catheter easy to pass through the narrow part and minimize damage to the tissue mucosa; when filled with an agent such as afuzosin, it can relax the smooth muscle and increase the extensibility of the ureter and other natural cavities, making it easier to insert an endoscope catheter, a sheath tube, etc.

[0051] Example 3:

[0052] As shown in Figures 3A-3C different from the above examples, a second fluid passage 15 is provided in the wall of the endoscope catheter 1, and an opening 150 in the second fluid passage is provided at the top end 111 of the endoscope catheter; in this embodiment, the gap between the endoscope catheter 1 and the sheath tube 3 (the mirror-sheath gap) can be perfused with cooling and flushing water flow as shown in Example 1, and the water flow enters the human body and then enters the upper cavity of the isolation body to continuously and continuously suck the heat generated by the laser and the stone debris through the working channel to the outside of the body, or only the second fluid passage 15 can be used to deliver cooling and flushing water flow, or the mirror-sheath gap and the second fluid passage can be used together to deliver liquid; when only the second fluid passage is used to deliver cooling and flushing water flow, the gap between the endoscope catheter and the sheath tube has no use for delivering liquid, and the sheath tube is only a sleeve outside the endoscope catheter to assist the endoscope catheter to smoothly enter the natural cavity, of course, the sheath tube can not be used and only the endoscope catheter can be used to complete the corresponding work, the diameter of the working channel of the endoscope catheter is increased accordingly, further realizing large-flow suction of the stone channel, improving the efficiency of stone removal, and shortening the operation time.

[0053] The second fluid passage 15 is provided in the wall of the endoscope catheter 1, each second fluid passage 15 is provided with a corresponding second fluid passage inner opening 150 in the top end 111 of the endoscope catheter head, and the second fluid passage 15 is connected with a second fluid passage side branch H5, and a second fluid passage outer opening 151 is arranged on the second fluid passage side branch H5; external water flows into the plurality of fluid passages 15 through the second fluid passage side branch H5, and then enters the human body through the second fluid passage inner opening 150; finally, the water flow carrying the stone debris is sucked into the upper cavity 1001 and the lower cavity 1002 of the isolation body through the working channel inner opening 101 under the action of negative pressure, and then is discharged out of the body; the second fluid passage inner opening 150 and / or the inward liquid outlet 402 on the inner surface of the wall of the endoscope catheter can be arranged on the inner surface of the wall of the endoscope catheter in an upwardly inclined manner or on the top end of the endoscope catheter head in an inwardly inclined manner; the water flow direction is directed to or closer to the lithotripsy position of the laser optical fiber L, so that the cooling and flushing effect of the water flow is improved. Figure 3A The head capsule inner cavity 40 is shown as being injected with fluid, the head capsule free part 42 is expanded and deformed, the optical fiber L passes through the center hole 200 and enters the upper cavity 1001 of the isolation body, and the exploring assembly is located at the containing hole 202, Figure 3B The head capsule inner cavity 40 is shown as being injected with fluid, the optical fiber L passes through the center hole 200 and enters the upper cavity 1001 of the isolation body, and the exploring assembly passes through the containing hole 202 and explores out of the working channel inner opening 101 of the endoscope catheter through the upper cavity 1001 of the isolation body, Figure 3C The head capsule free part 42 is shown as being expanded and deformed in another angle of the perspective view.

[0054] The expansion and suction integrated medical endoscope catheter can be used in endoscopic medical operations in various natural cavities, such as cardiovascular and respiratory tract, tear duct, ear canal, reproductive tract and digestive tract, or in the third space of the chest cavity, abdominal cavity and the like of a living body, and can also be used in medical operations of a wound channel of a penetrating wound, a pathological sinus tract and the like, and can also be used for removing stones, blood clots, secretions and pathological tissues and the like in the biliary tract or other natural cavities; and the expansion and suction integrated medical endoscope catheter can be specifically manufactured into a gastroscope, a duodenoscope, a bronchoscope, a nasopharyngolaryngoscope, a ureteroscope, a cystoscope, a hysteroscope, a colposcope, an arthroscope and the like.

[0055] In the utility model, the positions of various tubes and components are described as follows: the head is directed to the distal end part, and at least part of the head is used to enter the body; the tail is directed to the proximal end part, and at least part of the tail is used to be located outside the body; the inner opening is the distal end opening, and the outer opening is the proximal end opening; "forward movement" is directed to the distal end direction, and "backward movement" is directed to the proximal end direction; the upper side is directed to the direction close to the head, and the lower side is directed to the direction close to the tail.

Claims

1. An integrated medical endoscope catheter with dilation and suction, the endoscope catheter (1) is provided with a working channel (10) extending through the head and tail, the working channel (10) has a working channel inner opening (101) entering the body during use and at least one working channel outer opening (102) located outside the body, a thin sheet-shaped isolator (2) divides the internal space of the working channel (10) into an upper isolator cavity (1001) and a lower isolator cavity (1002), characterized in that: The isolation body (2) is provided with a central hole (200) for passing optical fiber (L) or guide wire (G) in the central region, and a plurality of interception holes (201) are arranged outside the central hole (200), and the edge region of the isolation body (2) is provided with a peeping assembly (112) containing hole (202), and the peeping assembly (112) is embedded in the containing hole (202) or moves up and down along the containing hole (202); further comprising a head capsule (4), the head capsule (4) is located in the region close to the head top end (111) of the endoscope catheter head (11), the head capsule (4) is sealed and connected with the outer surface of the endoscope catheter (1) through the head capsule sealing part (41), and the head capsule free part (42) and the outer surface (1112) of the endoscope catheter (1) covered thereby jointly constitute the head capsule inner cavity (40), the endoscope catheter (1) is provided with a first fluid passage (16), the first fluid passage (16) is provided with a first fluid passage inner opening (161) communicated with the head capsule inner cavity (40) and a first fluid passage outer opening (162) communicated with the outside fluid, and in use, fluid is injected through the first fluid passage outer opening (162) located outside the body, and the fluid enters the head capsule inner cavity (40) through the first fluid passage inner opening (161), and drives the head capsule free part (42) to expand and deform.

2. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The side of the head capsule free part close to the endoscope catheter head top end (111) is provided with a plurality of outward liquid outlets (401).

3. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: At least one inward liquid outlet (402) is arranged on the inner surface (1111) of the wall of the endoscope catheter (1) covered by the head capsule free part (42).

4. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The inner wall of the endoscope catheter (1) is provided with a second fluid passage (15), and the second fluid passage inner opening (150) is arranged at the endoscope catheter head top end (111).

5. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The peeping assembly (112) is connected with a non-fixed tube (1121) which is fixed or movable, the tube (1121) is located in the tube channel (113) in the wall of the endoscope catheter (1), the peeping assembly (112) extends out of the tube channel inner opening (1131) located at the bottom of the lower cavity (1002) of the isolation body, the tube channel outer opening (1132) is located on the operating handle (H) of the endoscope catheter (1), and part of the tube (1121) is located outside the tube channel outer opening (1132).

6. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The peeping assembly (112) is located at the tube distal end (1121A), and the tube distal end (1121A) is embedded in the containing hole (202) but is not constrained by the containing hole (202), and the peeping assembly (112) can pass through the containing hole (202) into the upper cavity (1001) of the isolation body or retreat into the lower cavity (1002) of the isolation body.

7. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: A plurality of slot-shaped interception holes (201) are arranged on the isolation body (2), the slot-shaped interception holes (201) are radially distributed with the central hole (200) as the origin, and at least one slot-shaped interception hole (201) allows the optical fiber (L) to pass through.

8. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The isolation body (2) is funnel-shaped and explores the lower cavity (1002) of the isolation body, or the isolation body (2) is conical and protrudes towards the upper cavity (1001) of the isolation body.

9. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: At least the containing hole (202) region of the isolation body (2) is flexible.

10. The dilating-aspirating integrated medical endoscope catheter according to claim 1, wherein: The isolation body (2) is transparent.

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