Expansion and suction integrated medical endoscope

Abstract

According to the dilation and suction integrated medical endoscope, an endoscope catheter (1) is provided with a working channel (10) penetrating through the head and the tail, the dilation and suction integrated medical endoscope further comprises a head bag body (4) and a protruding body (2), and the head bag body is connected with the endoscope catheter and / or the protruding body in a sealed mode through a head bag body sealing part (41); the head capsule inner cavity (40) is communicated with the external space of the head capsule inner cavity through a plurality of outward liquid outlets (401) and / or inward liquid outlets (402), during use, fluid is injected through a first fluid passage outer opening (162) located outside the body, the fluid enters the head capsule inner cavity through a first fluid passage inner opening (161), the free part of the head capsule is driven to expand and deform, and the free part of the head capsule is driven to expand and deform. Meanwhile, the fluid flows out through an outward liquid outlet and / or an inward liquid outlet of the free part of the head capsule body; at least one part of the protruding body (2) protrudes in a discontinuous or continuous sheet shape in the direction away from the endoscope catheter head top end (111), and the protruding body is connected with the endoscope catheter head (11) area through a protruding body connecting part (23).

Description

Technical Field

[0001] The utility model relates to an expansion-attraction integrated medical endoscope, belonging to the technical field of medical equipment products. Background Art

[0002] When the existing medical endoscope is used, it enters the natural cavity or pathological sinus of the living body to perform operations such as biopsy, tissue ablation, electroresection, laser lithotripsy, etc. If the natural cavity is narrow, the top edge of the endoscope catheter head needs to rigidly expand the natural cavity radially, which inevitably damages the mucosal tissue; and the waste materials such as secretions, blood clots, stone fragments, etc. in the natural cavity adhere to the surface of the mucosal tissue and are difficult to clean. Some waste materials are even located in blind cavities such as sinuses, appendix, and renal calyx. Cleaning the waste materials usually requires The flushing fluid is used in conjunction with negative pressure suction, and the operation is usually performed intermittently, with the disadvantages of poor flushing flexibility and a small flushing area. If the waste material needs to be crushed and extracted through the functional tube filament, the top of the functional tube filament needs to be aimed at the waste material. For example, when the urinary stone is located in the renal calyx, the top of the laser fiber needs to be aimed at the stone to crush it into stone fragments. When the stone is located laterally at the top of the endoscope catheter head, it is difficult for the functional tube filament such as the laser fiber that enters through the working channel of the endoscope catheter to adjust the bending direction or degree of bending to align with the stone under visual conditions. Summary of the invention

[0003] The utility model relates to an integrated expansion and suction medical endoscope, which enters the operating area safely through flexible expansion, and performs visual flushing and suction simultaneously, which helps to thoroughly clean up waste materials during endoscopic surgery; and in a visible state, the deformable performance of the expandable body is used to bend the functional tube wire so as to align with waste materials such as stones during the operation and perform clinical operations such as lithotripsy.

[0004] The purpose of the utility model is achieved in this way: an expansion and attraction 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 located outside the body, and also includes a head capsule and a protrusion, the head capsule is located in the area of ​​the head of the endoscope catheter close to the top of the head, the head capsule is sealed and connected with the endoscope catheter and / or the protrusion through the head capsule sealing part, the expandable head capsule free part and the endoscope catheter and / or the protrusion together constitute the head capsule inner cavity, the head capsule inner cavity is connected with the outside through a plurality of outward liquid outlets and / or inward liquid outlets, the endoscope catheter A first fluid passage is provided on the tube, and the first fluid passage is provided with a first fluid passage inner opening connected to the inner cavity of the head capsule and a first fluid passage outer opening connected to the external fluid; when in use, fluid is injected through the first fluid passage outer opening located outside the body, and the fluid enters the inner cavity of the head capsule through the first fluid passage inner opening, driving the free part of the head capsule to expand and deform, and the fluid simultaneously flows out through the outward liquid outlet and / or the inward liquid outlet of the free part of the head capsule; at least a part of the protrusion protrudes in the form of an intermittent or continuous thin sheet in a direction away from the top end of the endoscope catheter head, and the protrusion is composed of a protrusion head, a protrusion middle part, and a protrusion connecting part, and the protrusion is connected to the endoscope catheter head area through the protrusion connecting part.

[0005] The head balloon is sealed and connected to the endoscopic catheter and / or the protrusion through the head balloon sealing part, and the expandable head balloon free part and the endoscopic catheter and / or the protrusion together constitute the head balloon inner cavity, which means that the head balloon can be sealed and connected to the endoscopic catheter alone, can be sealed and connected to the protrusion alone, or can be sealed and connected to the protrusion and the endoscopic catheter at the same time to form the head balloon inner cavity.

[0006] At least a portion of the protrusion is in the form of an intermittent or continuous lamellae protrusion in a direction away from the top end of the endoscope catheter head. When the protrusion is in the form of an intermittent lamellae, it means that the protrusion can extend one or more petal-like structures, strip-like structures, etc. to the distal end; when the protrusion is in the form of a continuous lamellae, it means that the protrusion can extend a tubular structure, etc. to the distal end; when only one petal-like protrusion is provided, it is preferably provided at a position adjacent to the opening in the working channel; when two petal-like protrusions are provided, it is preferred that the two petal-like protrusions are provided opposite to each other.

[0007] The endoscope catheter can be used in conjunction with a sheath tube, and the top end of the endoscope catheter head can extend from the inner opening of the sheath tube when in use.

[0008] The tail of the endoscope catheter can be connected to a handle for easy operation, and the handle is connected to a control rod which can control the bending direction and / or bending degree of the top end of the endoscope catheter head.

[0009] Furthermore, in order to regulate the degree of bending and / or bending direction of the functional tube filament, it also includes an expandable body arranged adjacent to or connected to the protrusion. After the inner cavity of the expandable body is filled with fluid, the free part of the expandable body is deformed and expanded, and the volume of the inner cavity of the expandable body is expanded; a second fluid passage is provided on the endoscope catheter. When in use, the fluid is injected into the second fluid passage through the outer opening of the second fluid passage on the side branch of the second fluid passage located outside the body, and then enters the inner cavity of the expandable body through the inner opening of the second fluid passage. The fluid pressure drives the free part of the expandable body to expand and deform at least toward the space in front of the inner opening of the working channel, occupying the space in front of the inner opening of the working channel, and the free part of the expandable body contacts and presses the functional tube filament extending from the inner opening of the working channel, and then the degree of bending and / or bending direction of the functional tube filament is regulated by changing the fluid filling degree of the inner cavity of the expandable body.

[0010] The fluid filling degree includes the fluid filling amount, the expansion shape after fluid filling, etc.

[0011] The protrusion has an inner side surface of the protrusion and an outer side surface of the protrusion. Preferably, the peripheral area of ​​the expandable body is sealed and connected to the inner side surface of the protrusion to form an expandable body cavity. Of course, the peripheral area of ​​the expandable body may also be partially sealed and connected to the outer side surface of the protrusion, such as the expandable body passes over the top of the protrusion head and is sealed and connected to the outer side surface of the protrusion.

[0012] The expandable body is arranged adjacent to the protrusion, and the expandable body can be an independent sac-like structure. Preferably, the sac-like expandable body is located on the inner side of the protrusion. Due to the limiting effect of the protrusion, when the inner cavity of the expandable body is filled with fluid, the expandable body expands toward the opening in the working channel, contacts and compresses the functional tube filament.

[0013] The protrusion is connected to the expandable body as a whole. The expandable body can be an independent component, and then sealed and connected to the protrusion part by bonding, welding, etc. to form the expandable body cavity. Alternatively, the expandable body and the protrusion are formed as one piece, and the expandable body is an area on the protrusion that is easy to deform, and this area forms the free part of the expandable body.

[0014] The top end area of ​​the endoscope catheter head may be the top end of the endoscope catheter head, or may be an adjacent area to the top end of the endoscope catheter head.

[0015] The external area of ​​the opening in the working channel is regulated after the expandable body expands and deforms, which means that the opening in the working channel is blocked to different degrees according to the different expansion degrees of the expandable body. When the perfusion fluid is injected from the working channel, the cross-sectional area of ​​the perfusion fluid flowing out of the opening in the working channel changes, resulting in obstruction of the outflow of the perfusion fluid, and the flow direction of the perfusion fluid will also change at the same time, thereby achieving the effect of regulating the outflow amount, flow rate and flow direction of the perfusion fluid.

[0016] The functional tube filaments extending from the opening in the working channel usually include various guide wires, ablation catheters, pressure sensing catheters / guide wires, therapeutic injection catheters, laser optical fibers, etc. In order to better play the role of the functional tube filaments, when the free part of the expandable body expands and deforms toward the space in front of the opening in the working channel, it can squeeze the functional tube filaments located in the working channel, causing the functional tube filaments to bend. If the functional tube filament is a laser lithotripsy optical fiber, the top of the bent optical fiber head is easier to touch the stones located on the side of the top of the endoscopic catheter head, thereby successfully completing the subsequent lithotripsy operation.

[0017] During use, the fluid is injected into the fluid passage through the outer opening of the fluid passage outside the body, and then enters the inner cavity of the expandable body through the inner opening of the fluid passage. The fluid can enter the inner cavity of the expandable body directly through the inner opening of the fluid passage, or the fluid can first enter the internal passage of the protrusion and then enter the inner cavity of the expandable body through the inner opening of the fluid passage.

[0018] The protrusion is integrated with the endoscope catheter or the two are connected in an easily detachable manner.

[0019] In order to ensure the compressive force of the expandable body on the functional tube, when the expandable body expands and deforms, the strength of the middle part of the protrusion should prevent it from deforming outward or only slightly deforming; the middle part of the protrusion can be made of hard material or a hard sheet can be embedded in the flexible material or reinforcing ribs can be set.

[0020] In order to avoid damaging body tissue during use, the head of the protrusion can be made of flexible material according to clinical needs.

[0021] In order to facilitate passing through the narrow part of the natural cavity, at least the head of the protrusion is offset or bent toward the central axis of the endoscope catheter or the central axis of the working channel.

[0022] In order to facilitate brushing off foreign matter such as stones on the mucosa, bristles are provided on the head of the protrusion and / or the middle part of the protrusion, and the bristles include one or more of axial bristles, oblique bristles, and radial bristles.

[0023] Furthermore, the protrusion extends in a petal-like structure in a direction away from the top of the endoscope catheter head, and the protrusion connecting portion is in a sleeve-like shape and is rotatably connected to the endoscope catheter head. The sleeve-like protrusion connecting portion is provided with an annular groove open inwardly, and the annular groove is connected to the opening in the fluid passage of the endoscope catheter. The expansion direction of the free part of the expandable body can be adjusted by rotating the protrusion connecting portion, so that functional filaments such as laser optical fibers can be bent in any direction to meet the needs of precise lithotripsy.

[0024] In order to absorb larger stones, the protrusion extends in a direction away from the top of the endoscope catheter head to form a straight or curved cylindrical structure, and the opening on the protrusion head is trumpet-shaped or the protrusion head is provided with multiple folds; when water flows out of the working channel, the cylindrical protrusion plays a role in guiding the water flow to flow out of the stones, which can better reduce the local high temperature generated by laser lithotripsy.

[0025] To facilitate assembly, the protrusion connection part is connected to the endoscope catheter head in a sleeve shape, and the inner surface of the protrusion connection part is provided with continuous or intermittent ribs, and the area adjacent to the top of the endoscope catheter head is provided with continuous or intermittent grooves, and the ribs are embedded in the corresponding grooves during assembly; of course, the inner surface of the protrusion connection part can also be provided with grooves, and the corresponding area of ​​the endoscope catheter head can be provided with ribs, and the grooves and ribs cooperate with each other during assembly.

[0026] Another connection structure of the head capsule, the head capsule is sleeved on a straight cylindrical or curved cylindrical protrusion, and the straight cylindrical or curved cylindrical protrusion is connected to the endoscope catheter head through a sleeve-shaped protrusion connecting part; the protrusion connecting part and the endoscope catheter head can be tightly connected or easily disassembled. When an easily disassembled connection is selected, the assembly of the protrusion and the head capsule can be assembled in the endoscope head area as needed during endoscopic surgery.

[0027] In order to rotationally adjust and record the specific position of the expandable body before expansion, the protrusion connecting part is in the shape of a sleeve and is rotatably connected to the endoscope catheter head. An indicator arrow is provided on the outer surface of the sleeve-shaped protrusion connecting part, and scale lines and / or text marks are provided in the endoscope catheter head area below the indicator arrow.

[0028] Furthermore, an optimized structure of the head capsule is provided, in which a free circumferential skirt is extended from the sealing portion of the head capsule at the proximal end of the head capsule. When the expansion and attraction integrated medical endoscope cooperates with the sheath to be synchronously advanced in the natural cavity, the circumferential skirt will partially or completely block the opening in the sheath to prevent mucosal tissue from being embedded in the gap between the endoscope and the sheath and / or to prevent the mucosal tissue from being sheared and damaged by the top edge of the sheath head.

[0029] In order to facilitate related operations under visualization, at least the middle portion of the protrusion, the head of the protrusion, and the expandable body are transparent.

[0030] The beneficial effects of the utility model are:

[0031] 1. During the operation, precise flushing and negative pressure suction are performed under visualization, and the effect is significantly better than blind flushing.

[0032] 2. When the inner cavity of the head balloon is filled with fluid, especially liquid, the free part of the head balloon deforms and expands, which can radially expand narrow natural cavities such as narrow urinary tract, ureter, renal calyx, etc. Compared with the radial rigid expansion during the axial advancement of the traditional endoscopic catheter, the radial flexible expansion of the head balloon avoids shear damage to the mucosa of the natural cavity; and the increased inner cavity pressure of the head balloon sprays the liquid into the natural cavity through the outward liquid outlet, further expanding and lubricating the narrow part of the natural cavity.

[0033] 3. When the flushing water flow is difficult to wash away the waste materials adhering to the mucosal surface, the bristles on the protrusion can brush the waste materials off the mucosal surface under the drive of the endoscopic catheter.

[0034] 4. When using discontinuous thin sheet-like protrusions, i.e., petal-like protrusions, after the working channel of the endoscope catheter is connected to a negative pressure device, large stones can be adsorbed at the opening in the working channel and tightly attached to the inner side of the petal-like protrusion. When the large stones are moved to a specific area or outside the body, the large stones are not easy to swing, and can be stably adsorbed and move synchronously with the endoscopic catheter. The petal-like protrusion structure is easy to pass through the narrow part of the natural cavity, and is also easy to pick open the special structure at the connection between the bladder and the ureter - the Waldeyer sheath, to avoid damaging the Waldeyer sheath tissue when forcing it through.

[0035] 5. When using a continuous thin sheet-like protrusion, i.e. a cylindrical protrusion, waste materials such as stones can be adsorbed by the opening on the protrusion. Since the diameter of the opening on the protrusion can be set to be significantly larger than the diameter of the opening in the working channel, the opening on the protrusion can adsorb and move larger stones, and the opening on the curved cylindrical protrusion is more helpful in adsorbing stones on the side of the top end of the endoscope catheter head.

[0036] 6. A hydrophilic coating is applied to at least the outer surface of the endoscope catheter, protrusion and head capsule to significantly improve the lubrication performance, reduce the resistance when traveling in the natural cavity, and further reduce the mechanical damage to the mucosa and other body tissues caused by surgical operations.

[0037] 7. After the free part of the head capsule is inflated and expanded, it can block the natural cavity openings such as the sinus openings and the renal calyx openings to prevent the flushing fluid and harmful waste substances from flowing out of the gap between the head capsule and the natural cavity opening, eliminating or reducing the risk of waste substances flowing out of the natural cavity openings and causing contamination and damage.

[0038] 8. Combined with the negative pressure suction in the working channel, the functional coupling of "expansion, suction, flushing, brushing, and integrated functional tube wire bending" of the endoscope is realized, which comprehensively improves the comprehensive effectiveness of the endoscope.

[0039] 9. When the protrusion and the endoscope catheter are set to be rotatably connected, the expansion direction of the free part of the expandable body can be adjusted by rotating the protrusion connection part, thereby adjusting the bending direction of the functional tube filament such as laser optical fiber to meet the needs of precise lithotripsy.

[0040] 10. When the free part of the expandable body deforms and expands toward the opening area in the working channel, it contacts and compresses the functional tube wire, adjusts the bending degree and / or bending direction of the functional tube wire extending from the opening in the working channel, accurately aims at foreign objects such as stones under the premise of visualization, and performs other clinical operations such as lithotripsy; and after the expandable body expands and deforms, it can clamp the stone and move the stone out of the body along with the endoscopic catheter.

[0041] 11. After the free part of the expandable body expands and deforms, the degree of blocking of the opening in the working channel varies according to the degree of expansion. When the perfusion fluid is injected from the working channel, the outflow cross-sectional area of ​​the perfusion fluid from the opening in the working channel changes, and the flow direction of the perfusion fluid will also change at the same time, which has the effect of regulating the outflow amount, flow rate and flow direction of the perfusion fluid.

[0042] 12. When the free part of the expandable body bends the functional tube filament such as the laser fiber, the flow direction of the irrigation water flow out of the opening in the working channel will also bend due to the occupation of the free part of the expandable body. The irrigation water flow is directed toward the top of the laser fiber, which can better reduce the local high temperature during laser release.

[0043] 13. When water flows out from the opening in the working channel, the cylindrical protrusion plays the role of guiding the water flow to flow out of the stone, which can better reduce the local high temperature generated by laser lithotripsy.

[0044] 14. When the distal sealing sleeve of the head capsule is connected to the middle part of the protrusion, the expanded free part of the head capsule can extend forward and deform to contact or exceed the opening on the protrusion, and the outward liquid outlet extends forward simultaneously, realizing the front approach flushing. At this time, the negative pressure of the working channel can significantly improve the cleaning effect of stone debris, etc.

[0045] 15. The inner surface of the protrusion connection part is provided with continuous or discontinuous ribs / grooves, and the endoscope catheter head area is provided with continuous or discontinuous grooves / ribs. During assembly, the ribs are directly embedded in the corresponding grooves, which is simple to operate and saves time.

[0046] 16. The protrusion and expandable body and / or the head capsule can be used as disposable consumables, while the endoscope catheter can be reused after disinfection, which greatly saves the overall cost.

[0047] 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

[0048] The accompanying drawings which do not limit the present invention are as follows:

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

[0050] Figure 1B : Schematic diagram of the cross section of Example 1, the head capsule is not expanded

[0051] Figure 1C : Schematic diagram of the cross section of Example 1, the head capsule is inflated

[0052] Figure 1D : Schematic diagram of the cross section of Example 1, with the stone facing the opening in the working channel

[0053] Figure 1E : Schematic diagram of the cross section of Example 1, the stone is obliquely opposite to the opening in the working channel

[0054] Figure 1F : Schematic diagram of the cross section of Example 1, where part of the stone is sucked into the working channel

[0055] Figure 2A : Schematic diagram of the cross section of Example 2, the protrusion is connected to the endoscope catheter

[0056] Figure 2B : Schematic diagram of the cross section of Example 2, with the protrusion separated from the endoscope catheter

[0057] Figure 2C : Schematic diagram of the cross section of Example 2, the head capsule blocks the renal calyx opening

[0058] Figure 2D : A schematic cross-sectional view of Example 2, wherein the protrusion is provided with bristles

[0059] Figure 3A : Schematic diagram of the cross section of Example 3, the protrusion is connected to the endoscope catheter

[0060] Figure 3B : Schematic diagram of the cross section of Example 3, the protrusion is separated from the endoscope catheter

[0061] Figure 3C : Schematic diagram of the cross section of Example 3, the head capsule is inflated

[0062] Figure 3D: Another state cutaway diagram of Example 3

[0063] Figure 4A : A three-dimensional schematic diagram of Example 4

[0064] Figure 4B : Partial cutaway diagram of Example 4

[0065] Figure 4C : Schematic diagram of the cross section of Example 4, the opening on the protrusion is trumpet-shaped

[0066] Figure 4D : Schematic cross-section of Example 4, with wrinkles on the protrusion head

[0067] Figure 4E : Schematic cross-section of Example 4, the protrusion is curved and has folds DETAILED DESCRIPTION

[0068] The embodiments of the present invention are not limited to the following:

[0069] Embodiment 1:

[0070] like Figure 1A The expansion and attraction integrated medical endoscope shown, 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 located outside the body. The working channel 10 of the endoscope catheter 1 is used for the passage of medical tools when in use, and provides guidance, protection and other corresponding functions for the medical tools located therein, such as various ablation catheters, guide wires, stone baskets, optical fibers, ultrasonic catheters, etc. The tail 13 of the endoscope catheter 1 is connected to a handle 14, and a sealing cap C is provided on the handle 14. Functional tube wires L such as laser optical fibers pass through the sealing cap C to enter the working channel 10. The handle 14 is also provided with a perfusion side branch 142, and the external perfusion side branch opening 143 is in fluid communication with the working channel 10. When laser lithotripsy is performed, the perfusion fluid enters the working channel 10 through the perfusion side branch opening 143; Figure 1AIt is shown that the outer opening 102 of the working channel of the endoscope catheter 1 is located on the handle 14, and the handle 14 is also provided with a control rod 141 for adjusting the bending degree and / or bending direction of the endoscope catheter head 11. The control rod 141 controls the bending component such as a snake bone (omitted) of the endoscope catheter head 11 through a pulling line or the like; when in use, various treatment and diagnostic instruments can be placed in 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 suck it out of the body through the working channel 10 through a negative pressure device (omitted).

[0071] like Figures 1A-1FAs shown, it also includes a head capsule 4 and a protrusion 2. The head capsule 4 is located in the area of ​​the endoscope catheter head 11 close to the top 111 of the head. The head capsule 4 is preferably made of a flexible material with good compliance, such as silicone rubber, latex, and thermoplastic elastomer (non-compliant and semi-compliant materials can also be used). The head capsule 4 is sealed and connected to the endoscope catheter 1 and / or the protrusion 2 through the head capsule sealing portion 41. The inner side of the expandable head capsule free portion 42 and the outer side of the endoscope catheter 1 and / or the outer side of the protrusion 2 together constitute the head capsule inner cavity 40. The inner cavity 40 of the capsule body is connected to the outer space of the inner cavity 40 of the head capsule body through a plurality of outward liquid outlets 401 opened on the free portion 42 of the head capsule body. The endoscope catheter 1 is provided with a first fluid passage 16, and the first fluid passage 16 is provided with a first fluid passage inner opening 161 connected to the inner cavity 40 of the head capsule body and a first fluid passage outer opening 162 connected to the external fluid. The handle 14 is also provided with a first fluid passage side branch 160, and the first fluid passage outer opening 162 is located on the first fluid passage side branch 160; when in use, the first fluid passage 16 is located outside the body through the first fluid passage 161. The fluid is injected into the outer opening 162 of the first fluid passage, and the fluid enters the head capsule inner cavity 40 through the opening 161 in the first fluid passage, driving the head capsule free part 42 to expand and deform, and the fluid flows out through the head capsule free part to the liquid outlet 401; it also includes a protrusion 2 connected to the endoscope catheter head 11, at least a part of the protrusion 2 protrudes in an intermittent or continuous thin sheet shape in a direction away from the endoscope catheter head top 111, the protrusion 2 is composed of a protrusion head 21, a protrusion middle part 22, and a protrusion connecting part 23, and the protrusion 2 is connected to the endoscope catheter head 11 through the protrusion. The portion 23 is connected to the endoscope catheter head 11 region, and the protrusion 2 has a protrusion inner side surface 2a and a protrusion outer side surface 2b, and the protrusion inner side surface 2a is opposite to or adjacent to the opening 101 in the working channel; in order to facilitate passing through the special structure of the connection between the bladder and the ureter - the Waldeyer sheath, at least the protrusion head 21 is bent toward the central axis A0 of the endoscope catheter or the central axis A1 of the working channel of the endoscope catheter 1, and at least the protrusion head and the middle part of the protrusion are in a flap-like structure, so as to skillfully pick open the Waldeyer sheath tissue and allow the endoscope catheter 1 to pass smoothly; Figure 1D As shown, when the protrusion 2 partially presents a petal-like structure, when the working channel 10 of the endoscope catheter 1 is connected to negative pressure, the large stone S can be adsorbed at the opening 101 in the working channel, and when the endoscope catheter 1 moves to a specific area or moves outside the body, the large stone S clings to the inner side surface 2a of the protrusion, is stably adsorbed by the negative pressure and moves synchronously with the endoscope catheter 1.

[0072] Figures 1A-1FThe expansion and attraction integrated medical endoscope shown also includes an expandable body 24 arranged adjacent to or connected to the protrusion 2. In this solution, the sheet-shaped expandable body 24 is sealed and connected to the inner side surface 2a of the protrusion through the peripheral area to form an expandable body connecting portion 241 and an expandable body free portion 242. The expandable body free portion 242 and the inner side surface 2a of the protrusion together constitute an expandable body cavity 240. After the expandable body cavity 240 is filled with fluid, the expandable body free portion 242 is deformed and expanded, and the volume of the expandable body cavity 240 is expanded. In order to inject fluid into the expandable body cavity 240 from outside the body, a second fluid passage 15 is provided on the endoscope catheter 1. When in use, the fluid is injected into the second fluid passage 15 through the second fluid passage outer opening 152 on the second fluid passage side branch 150 located outside the body, and then enters the expandable body cavity 240 through the second fluid passage inner opening 151. The fluid pressure drives the expandable body free portion 242 at least toward the inner opening of the working channel. The space in front of the opening 101 expands and deforms, occupying the space in front of the opening 101 in the working channel. The free portion 242 of the expandable body contacts and compresses the functional tube filament L extending from the opening 101 in the working channel, and the bending degree and / or bending direction of the functional tube filament L are regulated by changing the fluid filling degree of the expandable body cavity 240; the functional tube filament L extending from the opening 101 in the working channel generally includes various guide wires, ablation catheters, pressure sensing catheters / guide wires, injection catheters for treatment, laser optical fibers, etc.; when used, the fluid enters the expandable body cavity 240 through the second fluid passage outer opening 152, the second fluid passage 15, and the second fluid passage inner opening 151 located outside the body. It can be directly entering the expandable body cavity 240 through the second fluid passage inner opening 151, or it can first enter the expandable body cavity 240 through the protrusion internal passage 25 on the protrusion 2. This scheme shows that the fluid enters the expandable body cavity 240 through the protrusion internal passage 25.

[0073] In order not to affect the function of the snooping component 112, at least the middle part 22 of the protrusion, the head 21 of the protrusion, and the expandable body 24 are transparent, that is, at least the middle part 22 of the protrusion, the head 21 of the protrusion, and the expandable body 24 are preferably made of transparent or translucent materials, and the head 21 of the protrusion can be preferably made of flexible materials according to clinical needs to avoid mechanical damage to the mucosa and other tissues in the body during use; the protrusion 2 and the endoscopic catheter 1 are integrated or the two are easily disassembled. When the free part 242 of the expandable body expands and deforms toward the opening 10 in the working channel, the strength of the middle part 22 of the protrusion should prevent it from deforming outward or only slightly deforming, so as not to weaken the compressive force of the free part 242 of the expandable body on the laser optical fiber. The middle part 22 of the protrusion can be made of hard material or a hard sheet can be embedded in the flexible material or reinforcing ribs can be set (figure omitted).

[0074] Furthermore, a hydrophilic coating is provided on at least the outer surface of the protrusion 2 and the head capsule 4. 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 to significantly improve its lubrication properties, reduce contact resistance, and further reduce the mechanical damage to the mucosa and other body tissues caused by surgical operations.

[0075] like Figure 1B As shown in FIG. 1 , when the expansion-attraction integrated medical endoscope moves in the natural cavity to the prostate B, the proliferative glandular tissue of the patient with prostatic hyperplasia compresses the urinary tract U, causing the urinary tract U to be narrowed. At this time, if the endoscope is directly forced forward through the narrow urinary tract U, it will inevitably cause shear damage to the natural cavity tissue mucosa; Figure 1C As shown, if a narrow natural cavity is encountered, such as a narrow urinary tract U at the prostate B, the flushing fluid D is injected from the outside into the head capsule cavity 40 through the first fluid passage 16 and the opening 161 in the first fluid passage, and the expandable head capsule free portion 42 is deformed and expanded outward, radially expanding the narrow natural cavity such as a narrow urethra, ureter, renal calyx, etc. Compared with the rigid expansion in the axial movement of the traditional endoscopic catheter, the radial flexible expansion of the head capsule 4 avoids shear damage to the natural cavity mucosa; the head capsule cavity 40 is connected to the outside through multiple outward liquid outlets 401. Connected, that is, the flushing liquid D can flow out into the natural cavity through the outward liquid outlet 401, and the increased pressure in the head capsule lumen 40 at this time will spray the flushing liquid D through the outward liquid outlet 401 to the natural cavity, further expanding and lubricating the narrow part of the natural cavity; and the flushing liquid and flushing material are sucked into the working channel 10 through the opening 101 inside 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, it is necessary to connect a negative pressure pipeline and a related negative pressure suction device (omitted in the figure) to the outer opening 102 of the working channel. The dotted arrow in the figure indicates the flow direction of the flushing liquid.

[0076] like Figure 1D , 1E As shown, the top end 111 of the endoscope catheter 1 enters the calyx K1 of the renal pelvis K, and the functional tube wire L (the functional tube wire in this solution is a laser optical fiber) also enters the renal calyx K1 through the endoscope catheter working channel 10 and breaks the stone S into stone fragments under visual conditions. In order to better break the stone, the top end L1 of the functional tube wire, that is, the top end L1 of the laser optical fiber should face the stone S ( Figure 1D); when the stone S is located in the lateral area of ​​the opening 101 in the working channel of the endoscope catheter 1 (i.e., the top end L1 of the laser fiber cannot face the stone S), fluid is filled into the inner cavity 240 of the expandable body from the outside through the second fluid passage 15 and the internal passage 25 of the protrusion, and different fluid pressures drive the free portion 242 of the expandable body to expand and deform to different degrees toward the space in front of the opening 101 in the working channel, occupying the space in front of the opening 101 in the working channel to different degrees, thereby regulating the fluid passing cross-sectional area of ​​the opening 101 in the working channel, forcing the fluid to flow from the opening in the working channel. The functional tube wire L extending from 101 is bent to different degrees and / or in different directions to meet the clinical needs of making the top of the laser fiber face the stone S or other needs. At this time, the top of the bent laser fiber head is easier to touch the stone located in the renal calyx K1, so that the subsequent lithotripsy operation can be successfully completed; when the expandable body free part 242 bends the laser fiber, the flow direction of the irrigation water flow in the endoscope catheter 1 is also changed due to the occupation of the expandable body free part 242, and the irrigation water flow is directed toward the top of the laser fiber to better reduce the local high temperature caused by the laser release ( Figure 1E ); after the expandable body cavity 240 is filled with fluid to cause the expandable body free portion 242 to deform and expand toward the opening 101 in the working channel, the expandable body free portion 242 will occupy the front space corresponding to the opening 101 in the working channel, and regulate the outflow cross-sectional area of ​​the fluid through the opening 101 in the working channel; after the expandable body free portion 242 expands and deforms, it regulates the cross-sectional area of ​​the opening 101 in the working channel that is available for the passage of fluid, that is, the opening 101 in the working channel is blocked to different degrees according to the degree of expansion. When the perfusion fluid is injected into the working channel, the cross-sectional area of ​​the opening 101 in the working channel that is available for the passage of fluid changes, the outflow of the perfusion fluid from the opening 101 in the working channel is blocked, and the flow direction of the perfusion fluid will also change at the same time, thereby achieving the effect of regulating the outflow amount, flow rate and flow direction of the perfusion fluid.

[0077] like Figure 1F As shown, the top end 111 of the head of the endoscope catheter 1 enters the renal calyx 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 S1 in a visible state. The flushing fluid D enters the head capsule cavity 40 through the first fluid passage 16 and the opening 161 in the first fluid passage, so that the free part 42 of the head capsule expands and blocks the renal calyx opening K0. During the process of flushing with water from the outward liquid outlet 401 and negative pressure suction of the working channel 10, the many stone fragments S1 in the renal calyx K1 are difficult to escape from the blocked renal calyx opening K0 to other areas of the renal pelvis K, thereby achieving full cleaning of the stone fragments S1 under visual conditions and eliminating the risk of residual stone fragments S1. The dotted arrow in the figure indicates the flow direction of the flushing fluid, and the solid arrow indicates the moving direction of the stone fragments S1.

[0078] When the flushing fluid D with a relatively high pressure enters the inner cavity 40 of the head capsule, the free portion 42 of the head capsule expands and swells, and the flushing fluid is ejected through the outward liquid outlet. Combined with the negative pressure suction in the working channel 10, the ideal function of "expansion, suction, and flushing integration" of the endoscope system is realized, thereby improving the treatment efficiency of the endoscope system and greatly saving costs.

[0079] The utility model covers 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.; when the protrusion 2 and the expandable body 24 are used, the function of the peeping component 112 (including an ultrasonic probe or a non-visible light probe) is not interfered with or is not significantly interfered with.

[0080] Embodiment 2:

[0081] like Figure 2A , 2B As shown, the head capsule 4 is sealed and connected to the endoscope catheter 1 through the head capsule sealing portion 41, and the inner side of the expandable head capsule free portion 42 and the outer side of the endoscope catheter 1 together constitute the head capsule inner cavity 40, and the head capsule inner cavity 40 is connected to the external environment through multiple outward liquid outlets 401; the protrusion 2 is arranged on the upper side of the head capsule 4, that is, the protrusion head 21 is located in the direction away from the top end 111 of the head of the endoscope catheter 1, and the protrusion connection portion 23 is connected to the endoscope catheter head 11 in a sleeve shape, and the sleeve-shaped protrusion connection portion 23 is provided with an inwardly open circumferential groove 230, and the circumferential groove 230 is opened in the second fluid passage of the endoscope catheter. The external fluid can enter the protrusion internal passage 25 through the second fluid passage 15, the opening 151 in the second fluid passage, and the circumferential groove 230, and then enter the expandable body inner cavity 240, so that the expandable body free portion 242 expands and expands; in order to facilitate assembly and save time, the inner surface of the protrusion connection part 23 is provided with a continuous or discontinuous rib 233, and the area adjacent to the top 111 of the endoscope catheter head 11 is provided with a continuous or discontinuous groove 114. When assembling, the rib 233 is embedded in the corresponding groove 114. Of course, the inner surface of the protrusion connection part 23 can also be provided with a groove and the endoscope catheter head 11 area can be provided with a rib; Figure 2A , Figure 2B The flushing liquid D enters the head capsule cavity 40 through the first fluid passage 16, so that the head capsule free portion 42 is in an expanded state. Figure 2A It shows that the protrusion 2 and the endoscope catheter 1 are assembled and sealed, and the top end L1 of the functional tube wire protrudes out of the opening 101 in the working channel and faces the stone S. Figure 2B The state in which the protrusion 2 has not yet been assembled and connected to the endoscope catheter 1 is shown.

[0082] In the present embodiment, the protrusion 2 is a continuous thin sheet-like protrusion, that is, the protrusion 2 is straight, cylindrical or curved cylindrical (figure omitted), the diameter of the protrusion head 21 gradually decreases toward the distal end, so as to facilitate passing through the narrower position of the natural cavity, and the protrusion head 21 is provided with a protrusion upper opening 210, and foreign bodies such as stones S can be adsorbed by the protrusion upper opening 210, and because the protrusion upper opening 210 can be set to have a diameter larger than the opening 101 in the working channel, the protrusion upper opening 210 can adsorb and move larger stones S, such as adsorbing and moving stones S from the lower calyx of the kidney to the spacious renal pelvis or upper calyx of the kidney for laser lithotripsy; when the working channel 10 is connected to negative pressure, the protrusion upper opening 210 with a diameter larger than the opening 101 in the working channel becomes a negative pressure suction port, which can adsorb larger stones S and move them, and the curved cylindrical protrusion upper opening 210 bends to one side (figure omitted), which helps to adsorb stones S located on the side of the top end 111 of the endoscope catheter head.

[0083] The protrusion 2, the head capsule 4 and the endoscope catheter 1 can be tightly connected or easily detachably connected. When an easily detachable connection is selected, the assembly of the protrusion 2 and the head capsule 4 can be assembled on the endoscope head 11 as needed during the endoscopic surgery; the protrusion connecting portion 23 is in the shape of a sleeve and can be set to be rotatably connected to the endoscope catheter head 11. By rotating the protrusion connecting portion 23, the relative position of the expandable body 24 can be adjusted, that is, the expansion direction of the expandable body free portion 242 can be adjusted. The outer surface of the sleeve-shaped protrusion connecting portion is provided with an indicator arrow (not shown), and the endoscope catheter head area below the indicator arrow is provided with scale lines and / or text marks (not shown) to facilitate rotation and adjustment of the specific position of the expandable body free portion before expansion.

[0084] Figure 2C It is shown that the free part 42 of the head capsule after expansion and deformation blocks the renal calyx opening K0, and the flushing fluid D in the inner cavity 40 of the head capsule is flushed out through multiple outward liquid outlets 401, and the opening 101 in the working channel of the endoscope catheter 1 and the opening 210 on the protrusion enter the renal pelvis K and calyx K1, and the stone fragments S1 broken by the laser optical fiber (omitted) are sucked out of the body by negative pressure through the opening 210 on the protrusion, the opening 101 in the working channel, and the working channel 10, thereby achieving full cleaning of the stone fragments S1 under visual observation and eliminating the risk of residual stone fragments S1. The dotted arrow in the figure indicates the flow direction of the flushing fluid D, and the solid arrow indicates the movement direction of the stone fragments S1.

[0085] like Figure 2DAs shown, the protrusion head 21 is provided with bristles 26, and the bristles 26 include axial bristles 261, oblique bristles 262 and radial bristles 263. When the water flow is difficult to wash away the waste materials such as stone fragments adhering to the mucosal surface, the bristles 26 can brush the waste materials from the mucosa under the drive of the endoscopic catheter. When in use, "flushing, brushing, and suction" are highly integrated, which is more conducive to cleaning the waste materials, especially the waste materials in the mucosal folds, and thoroughly cleaning the stone fragments in the renal calyx.

[0086] According to the conception of the utility model, in order to make the free part 42 of the head capsule show wavy or irregular peristalsis or significant expansion in a preset stage after being filled and expanded, the free part 42 of the head capsule has structural and morphological characteristics such as corrugated undulations, uneven wall thickness, stage-by-stage differences in wall thickness, and ribs distributed with intermittent or continuous thread lines. The ribs can protrude inwardly and / or outwardly (figure omitted).

[0087] Embodiment 3:

[0088] like Figure 3A , 3B 3C, different from Example 2, the protrusion connection portion 23 is connected to the endoscope catheter head 11 in a sleeve shape, and the endoscope catheter head 11 is provided with a circumferential boss 115 in the area adjacent to the head top 111, and the lower surface 235 of the protrusion connection portion is in close contact with the circumferential boss 115 by bonding or welding. The sleeve-shaped protrusion connection portion 23 is provided with an inwardly open circumferential groove 230 and a rib 233, the circumferential groove 230 is connected to the opening 151 in the second fluid passage of the endoscope catheter, and the rib 233 is assembled corresponding to the groove 114 in the endoscope catheter head 11 area; it also includes a head capsule 4, and the head capsule 4 is connected to the head capsule sealing portion 4 1 is sealed and connected to the outer side surface 2b of the protruding body, the inner side surface of the expandable head capsule free part 42 and the outer side surface 2b of the protruding body jointly constitute the head capsule inner cavity 40, the sleeve-shaped protruding body connecting part 23 is also provided with a head capsule circumferential groove 234 and a head capsule through hole 2340, the first fluid passage 16 is connected to the head capsule inner cavity 40 through the first fluid passage inner opening 161, the head capsule circumferential groove 234, and the head capsule through hole 2340, the protruding body connecting part 23 may also be provided with only the head capsule through hole 2340, the first fluid passage 16 is connected to the head capsule inner cavity 40 through the first fluid passage inner opening 161 and the head capsule through hole 2340; Figure 3A The protrusion 2 and the endoscope catheter 1 are shown to be assembled and sealed. Figure 3B It is shown that the protrusion 2 has not yet been assembled and connected with the endoscope catheter 1; Figure 3CIt is shown that after the protrusion 2 is sealed and connected with the endoscope catheter 1, the flushing fluid D enters into the head capsule inner cavity 40 through the first fluid passage 16, the opening 161 in the first fluid passage, the head capsule circumferential groove 234, and the head capsule through hole 2340 respectively. The head capsule inner cavity 40 is filled and expanded to make the head capsule free part 42 expand and deform, and the flushing fluid D can be sprayed out through multiple outward liquid outlets 401; when the distal end of the head capsule sealing part 41 is sealed and sleeved on the middle part 22 of the protrusion, the expanded head capsule free part 42 can extend forward and deform to approach or exceed the opening 210 on the protrusion, and the outward liquid outlet 401 extends forward synchronously, realizing the front approach flushing. At this time, the negative pressure connected to the working channel 10 significantly improves the cleaning effect of stone fragments, purulent secretions, etc.

[0089] like Figure 3D The application scheme of the utility model in the sinus N is shown. The external flushing liquid D enters the inner cavity 40 of the head capsule through the first fluid passage 16, so that the free part 42 of the head capsule is filled and expanded to block the sinus opening N0, and prevent the inflammatory substance P from flowing out through the sinus opening N0. The flushing liquid D is sprayed out through multiple outward liquid outlets 401 arranged on the free part 42 of the head capsule. The water flow of the flushing liquid D washes off the inflammatory substance P on the sinus mucosa, so that the inflammatory substance P enters the working channel 10 through the opening 210 on the protrusion and the opening 101 in the working channel under negative pressure suction, and is finally cleared out of the body, which can prevent and treat diseases such as sinusitis. The dotted arrow in the figure indicates the flow direction of the flushing liquid D, and the solid arrow indicates the movement direction of the inflammatory substance P.

[0090] Embodiment 4:

[0091] like Figure 4A As shown, it also includes a sheath tube 3 used in conjunction with the endoscope catheter 1. The sheath tube 3 is composed of a sheath tube head 31, a sheath tube middle part 32, and a sheath tube tail part 33. The sheath tube 3 is provided with a sheath tube inner cavity 30 and a sheath tube inner opening 301 that enters the body when in use and a sheath tube outer opening 302 that is located outside the body when in use. When in use, the top end 111 of the head of the endoscope catheter 1 enters the sheath tube inner cavity 30 through the sheath tube outer opening 302 of the sheath tube 3, and then extends out from the sheath tube inner opening 301; the sleeve-shaped protrusion 2 is sleeved on the endoscope catheter head 11 area, and the head The lower sac 4 is located at the lower side of the protrusion 2, and the head sac 4 is sealed and connected to the outer surface of the endoscope catheter 1 through the head sac sealing portion 41. The head sac sealing portion 41 at the proximal end of the head sac 4 is extended with a free circumferential skirt 43. When the expansion and attraction integrated medical endoscope of the utility model cooperates with the sheath 3 to be synchronously advanced in the natural cavity, the circumferential skirt 43 partially or completely blocks the opening 301 in the sheath to prevent the mucosal tissue from being embedded in the scope sheath gap 30 and / or preventing the top edge of the sheath head 31 from shearing and damaging the mucosal tissue; Figure 4BAs shown, after the opening 301 in the sheath enters the renal pelvis K, the top 111 of the head of the endoscope catheter 1, the head capsule 4 and the protrusion 2 protrude out of the opening 301 in the sheath, and the endoscope catheter 1 is moved from outside the body to cause the circumferential skirt 43 and the opening 301 in the sheath to be relatively displaced, that is, the circumferential skirt 43 does not block the opening 301 in the sheath. In this case, the perfusion fluid can enter the kidney through the working channel 10 of the endoscope catheter 1, and the flushing fluid D in the head capsule cavity 40 can also enter the kidney through multiple outward liquid outlets 401, which greatly reduces the local high temperature generated by the laser optical fiber L during lithotripsy, and the stone S and / or stone debris S1 enter the gap between the endoscope catheter 1 and the sheath 3, that is, the scope sheath gap, through the opening 301 in the sheath, and are immediately sucked out of the body by negative pressure, and the stone debris in the renal calyx is completely cleaned by flushing and suction. The dotted arrows in the figure indicate the flow direction of the flushing fluid D and the perfusion fluid, and the solid arrows indicate the movement direction of the stones and stone debris.

[0092] like Figure 4C As shown, the straight-cylindrical protrusion 2 is connected to the endoscope catheter head 11 through a sleeve-shaped protrusion connection portion 23, and the head capsule 4 is sleeved on the straight-cylindrical protrusion 2. The opening 210 on the protrusion of the protrusion head 21 is trumpet-shaped to absorb large-volume stones S or other foreign matter. A plurality of inward liquid outlets 402 are provided on the protrusion 2, and the head capsule inner cavity 40 is connected to the external environment through the plurality of inward liquid outlets 402. When the flushing liquid D is injected into the head capsule inner cavity, the flushing liquid D can be ejected from the inward liquid outlet 402 to impact the large stones, inflammatory secretions and other blockages in the opening 101 area of ​​the working channel, so as to avoid the blockage from blocking the opening 101 in the working channel; when the working channel is selected for liquid outlet, it can also assist in increasing the perfusion water flow in the working channel 10 to enhance the flushing and cooling effects; as shown in FIG. Figure 4D As shown, the protrusion head 21 is provided with a plurality of folds 211, and the average thickness of the folds 211 is equal to or less than the middle portion 22 of the protrusion. The folded protrusion head 21 is easy to deform and can tightly absorb foreign bodies such as stones S of different shapes and sizes appearing in the vicinity of the opening 210 on the protrusion, thereby taking the stones S out of the body. Figure 4E The protruding head 21 in the endoscope is bent and offset to facilitate the adsorption of stones S on the side of the top end 111 of the head of the endoscope catheter 1.

[0093] The inner cavity 40 of the head capsule 4 can be filled with flushing fluid and other fluids, lubricating agents such as lubricants, and agents such as alfuzosin that increase the ductility of the ureter; when filled with flushing fluid and other fluids, it can expand the free part of the head capsule, flush, lubricate the natural cavity, and cool down during laser lithotripsy; when filled with lubricating agents such as lubricants, the lubricating agents flow out through the outward liquid outlet on the expanded free part of the head capsule, which can lubricate the natural cavity to make it easier for the endoscopic catheter to pass through the narrow part and minimize the damage to the tissue mucosa; when filled with alfuzosin and other agents, it can relax the smooth muscle, increase the ductility of the natural cavity such as the ureter, and facilitate the insertion of endoscopic catheters, sheaths, etc.

[0094] 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 at least part of it enters the body when in use; the tail portion is toward the proximal end portion, and at least part of it is 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; "upper side" is the direction close to the head, and "lower side" is the direction close to the tail.

[0095] The medical endoscope of the utility model can be used for endoscopic medical operations in various natural cavities including the cardiovascular tract, respiratory tract, lacrimal duct, ear canal, reproductive tract, and digestive tract, or in the third spaces of a living body such as the thoracic cavity and abdominal cavity, and can also be used for medical operations on penetrating wounds, pathological sinus tracts, etc.; specifically, it can be made into a gastroscope, duodenoscope, bronchoscope, nasopharyngeal laryngoscope, ureteroscope, cystoscope, hysteroscope, colposcope, arthroscope, etc.

Claims

1. An expansion and attraction integrated medical endoscope, wherein a head (11) of an endoscope catheter (1) is provided with a peep assembly (112), the endoscope catheter (1) is provided with a working channel (10) running through the head and tail, the working channel (10) having an inner working channel opening (101) for entering the body during use and an outer working channel opening (102) located outside the body, characterized in that: The invention also comprises a head capsule (4) and a protrusion (2), wherein the head capsule (4) is located in a region of the head (11) of the endoscope catheter near the top end (111) of the head, the head capsule (4) is sealedly connected to the endoscope catheter (1) and / or the protrusion (2) via a head capsule sealing portion (41), the expandable head capsule free portion (42) and the endoscope catheter (1) and / or the protrusion (2) together form a head capsule inner cavity (40), the head capsule inner cavity (40) is connected to the outer space of the head capsule inner cavity (40) via a plurality of outward liquid outlets (401) and / or inward liquid outlets (402), 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) connected to the head capsule inner cavity (40). ) and a first fluid passage outer opening (162) connected to an external fluid; when 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), driving the head capsule free portion (42) to expand and deform, and the fluid simultaneously flows out through the head capsule free portion outer liquid outlet (401) and / or inner liquid outlet (402); at least a portion of the protrusion (2) protrudes in an intermittent or continuous thin sheet shape in a direction away from the top end (111) of the endoscope catheter head, and the protrusion (2) is composed of a protrusion head (21), a protrusion middle portion (22), and a protrusion connecting portion (23), and the protrusion (2) is connected to the endoscope catheter head (11) region through the protrusion connecting portion (23).

2. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: The endoscope catheter (1) further comprises an expandable body (24) disposed adjacent to or connected to the protrusion (2). When the expandable body cavity (240) is filled with fluid, the free portion (242) of the expandable body is deformed and expanded, and the volume of the expandable body cavity (240) is expanded. The endoscope catheter (1) is provided with a second fluid passage (15). When in use, the fluid is injected into the second fluid passage (15) through the second fluid passage outer opening (152) on the second fluid passage side branch (150) located outside the body, and then the fluid is injected into the second fluid passage (15) through the second fluid passage inner opening (152). The opening (151) enters the inner cavity (240) of the expandable body, and the fluid pressure drives the free portion (242) of the expandable body to expand and deform at least toward the space in front of the opening (101) in the working channel, occupying the space in front of the opening (101) in the working channel, and the free portion (242) of the expandable body contacts and presses the functional tube filament (L) extending from the opening (101) in the working channel, and the bending degree and / or bending direction of the functional tube filament (L) are regulated by changing the fluid filling degree of the expandable body cavity (240).

3. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: At least the protrusion head (21) is bent toward the central axis (A0) of the endoscope catheter or the central axis (A1) of the working channel of the endoscope catheter (1).

4. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: Bristles (26) are provided on the protrusion head (21) and / or the protrusion middle part (22), and the bristles (26) include one or more of axial bristles (261), oblique bristles (262), and radial bristles (263).

5. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: The protrusion (2) extends in a petal-like structure in a direction away from the top end (111) of the endoscope catheter (1). The sleeve-shaped protrusion connection portion (23) is rotatably connected to the endoscope catheter head (11). The sleeve-shaped protrusion connection portion (23) is provided with an inwardly open annular groove (230), and the annular groove (230) is connected to the opening (151) in the endoscope catheter fluid passage. The expansion direction of the expandable body free portion (242) can be adjusted by rotating the protrusion connection portion (23).

6. The expansion and attraction integrated medical endoscope according to claim 1, characterized in that: The protrusion (2) extends in a direction away from the top end (111) of the endoscope catheter (1) to form a straight or curved cylindrical structure; the protrusion upper opening (210) of the protrusion head (21) is trumpet-shaped or the protrusion head (21) is provided with a plurality of folds (211).

7. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: A sleeve-shaped protrusion connection part (23) is connected to an endoscope catheter head (11); a continuous or discontinuous protrusion rib (233) is provided on the inner surface of the protrusion connection part (23); a continuous or discontinuous groove (114) is provided in an area adjacent to the top end (111) of the endoscope catheter head (11); and during assembly, the protrusion rib (233) is embedded in the corresponding groove (114).

8. The expansion and attraction integrated medical endoscope according to claim 1, characterized in that: The head capsule (4) is sleeved on a straight or curved cylindrical protrusion (2), and the straight or curved cylindrical protrusion (2) is connected to the endoscope catheter head (11) via a sleeve-shaped protrusion connection portion (23).

9. The expansion and suction integrated medical endoscope according to claim 1, characterized in that: A free circumferential skirt (43) extends from the head capsule sealing portion (41) at the proximal end of the head capsule (4). When the medical endoscope and the sheath (3) are synchronously advanced in the natural cavity, the circumferential skirt (43) completely or partially blocks the opening (301) in the sheath, thereby preventing mucosal tissue from being embedded in the scope sheath gap (30) and / or preventing the top edge of the sheath head (31) from shearing and damaging the mucosal tissue.

10. The expansion and attraction integrated medical endoscope according to claim 1, characterized in that: At least the middle part (22) of the protrusion, the head part (21) of the protrusion, and the expandable body (24) are transparent.

Images