Endoscope and sheath water jet scalpel treatment system

Abstract

The invention relates to the technical field of minimally invasive medical treatment, and discloses an endoscope and an endoscope sheath water jet scalpel treatment system, comprising: an insertion part in which a camera system and a light source are integrated; the tubular endoscope sheath can accommodate the insertion part, the near end of the tubular endoscope sheath is provided with a connecting port communicated with a negative pressure pump, and the far end of the tubular endoscope sheath is a transparent blind end; the adsorption ports are distributed in the circumferential direction of the side wall of the endoscope sheath, and the adsorption ports and the connecting port form a negative pressure channel through an inner cavity of the sheath tube; the water jet scalpel assembly comprises a water inlet pipe which rotatably penetrates through the jaw opening of the insertion part, and a return pipe which is arranged in the inner cavity of the sheathing canal; the far end of the water inlet pipe is provided with a high-pressure water nozzle, and the near end is connected with the water jet system. A focus is accurately positioned under the guidance of a high-definition image, targeted adsorption is realized by utilizing the physical property difference of tissues and forming a dynamic negative pressure field through a spiral adsorption port, and adsorption force is regulated and controlled to enhance pathological tissue capture and inhibit healthy tissue traction, so that the debridement efficiency is improved, the complication occurrence rate is remarkably reduced, and the safety of minimally invasive treatment of a cavity is ensured.

Description

Technical Field

[0001] The present invention relates to the field of minimally invasive medical technology, in particular to an endoscope and an endoscope sheath water jet treatment system. Background Art

[0002] As a core instrument for minimally invasive surgery, endoscopes have been widely used in the diagnosis and treatment of diseases of the digestive tract, urinary system, and other cavities. However, traditional endoscopes primarily rely on mechanical forceps, high-frequency electrocautery, or lasers for tissue removal, which carries with it a high risk of thermal damage, difficulty controlling cutting depth, and postoperative tissue adhesion. To improve treatment safety, endoscope sheath waterjet treatment systems are gaining popularity. These systems integrate a waterjet assembly with negative pressure adsorption through a sheath, achieving both physical cold cutting and simultaneous fragment recovery. In traditional endoscopic minimally invasive surgery, tissue removal often relies on mechanical forceps, electrocautery, or laser technology.

[0003] However, with current technology, it is difficult to distinguish the microscopic boundaries between diseased tissue and healthy tissue, which increases the risk of mucosal damage and infection. It is also difficult to achieve real-time and precise coordinated cutting, affecting the debridement efficiency and the safety of minimally invasive treatment. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an endoscope and a sheath water jet treatment system to solve the problem that it is difficult to distinguish the microscopic boundaries between diseased tissue and healthy tissue, which affects the debridement efficiency and the safety of minimally invasive treatment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an endoscope and sheath water jet treatment system, comprising: an insertion portion, wherein the insertion portion is integrated with a camera system and a light source; The operating unit includes a control module and a human-computer interaction interface. The control module is connected to the negative pressure pump and the water jet assembly via a cable or wireless signal, and is used to dynamically adjust the negative pressure adsorption intensity and the water jet injection parameters; The operating unit is communicatively connected with the camera system and the electronic endoscope for real-time synchronous feedback of image data and operating instructions; A tubular mirror sheath capable of accommodating the insertion portion, wherein the proximal end of the sheath is provided with a connection port connected to a negative pressure pump and the distal end is a transparent blind end; The side wall of the mirror sheath is provided with a plurality of adsorption ports distributed circumferentially, wherein the adsorption ports form a negative pressure channel through the inner cavity of the sheath tube and the connecting port; The water jet assembly comprises a water inlet pipe rotatably arranged through the opening of the insertion portion, and a return pipe arranged in the inner cavity of the sheath tube; The distal end of the water inlet pipe is provided with a high-pressure water nozzle, and the proximal end is connected to the water jet system.

[0006] By adopting the above technical solution, the distal end of the mirror sheath adopts a transparent blind end design to ensure a clear field of view, and the proximal end is connected to the negative pressure pump through a sealed connection port to form a closed-loop adsorption channel. The spiral array adsorption ports distributed circumferentially on its side wall are linked to the negative pressure pump through the sheath lumen to achieve tissue adsorption and debris recovery. The water jet assembly has a built-in rotatable water inlet pipe through the insertion channel, and the distal high-pressure water nozzle completes rotary cutting in the sheath lumen. At the same time, the independent spiral diversion reflux pipe in the sheath realizes efficient waste liquid discharge.

[0007] Preferably, the transparent blind end of the mirror sheath is a hemispherical structure with a light transmittance of ≥85%, and the material is medical-grade polycarbonate.

[0008] By adopting the above technical solution, the hemispherical transparent blind end made of medical-grade polycarbonate has a light transmittance of ≥85%. While ensuring the clarity of the wide-angle field of view of the endoscope, the hemispherical curvature design can reduce the friction resistance when in contact with the tissue. The blind end, the circumferential spiral adsorption port, the sheath lumen and the proximal negative pressure connection port together constitute a fluid mechanics-optimized adsorption channel. Combined with the synergistic effect of the rotating jet of the water jet assembly and the spiral diversion of the return pipe, a dynamic balance of tissue adsorption positioning, precise cutting and fragment recovery is achieved, significantly improving the efficiency and safety of minimally invasive surgery.

[0009] Preferably, the adsorption ports are arranged in a spiral array with an aperture of 0.8-1.2 mm, and the distance between adjacent adsorption ports is 3 to 5 times the aperture.

[0010] By adopting the above technical solution, the side wall of the mirror sheath is preferably arranged in a spiral array, and the distance between adjacent adsorption ports is 3 times to 5 times the aperture. The layout parameters are optimized through fluid mechanics simulation to ensure the clinical demand for adsorption force per unit area and avoid negative pressure interference between adjacent adsorption ports. The spiral arrangement pattern and the spiral diversion reflux tube in the inner cavity of the sheath form a composite flow channel. Driven by the negative pressure pump, the fluid path of tissue adsorption and waste liquid recovery presents a laminar flow enhancement effect, which increases the local flow rate and reduces the risk of tissue fragment blockage. Combined with the circumferential rotation cutting of the water jet assembly, a dynamic balance of the three stages of adsorption, cutting and recovery is achieved. Preferably, the water inlet pipe comprises: The metal curved tube section can be rotated 360 degrees, and its bending radius matches the inner diameter of the mirror sheath; Double-layer PTFE sealed bearing is located at the joint between the clamp opening and the water inlet pipe.

[0011] By adopting the above technical solution, the metal curved pipe section achieves full-circle interference-free rotation of the water jet nozzle in the sheath by precisely matching the curvature of the inner cavity of the mirror sheath, and the double-layer PTFE sealed bearing is integrated into the dynamic matching interface between the clamp channel and the water inlet pipe to maintain zero leakage of high-pressure water flow. Combined with the negative pressure adsorption of the spiral adsorption port of the sheath and the synchronous diversion of the rotation direction of the return pipe, precise hydrodynamic cutting with spatial posture adaptation is formed.

[0012] Preferably, the end of the metal curved pipe section is provided with 3-5 radially distributed micro nozzles, and the axis of each nozzle forms an angle of 15°-30° with the pipe body.

[0013] By adopting the above technical solution and verifying it through computational fluid dynamics simulation, the high-pressure water flow forms a three-dimensional conical cutting domain with a diameter of 3-5 mm in the sheath, achieving tissue cutting depth and synchronously matching the pulsed adsorption rhythm of the spiral adsorption port of the sheath, so that the tissue fragments generated by the cutting are immediately discharged through the spiral guide groove of the reflux tube.

[0014] Preferably, a spiral guide groove is provided on the inner wall of the return pipe, and the pitch of the guide groove gradually decreases along the direction of the fluid.

[0015] By adopting the above technical solution, the spiral guide groove is designed with a gradually decreasing pitch along the fluid direction. Combined with the geometrically optimized guide surface structure and the negative pressure distribution characteristics of the sheath tube adsorption port, a fluid-dynamically enhanced waste liquid transport path is formed. The gradually decreasing pitch design reduces the flow resistance through the acceleration effect. At the same time, the rotational kinetic energy generated by the spiral guide and the negative pressure attraction of the adsorption port work together to achieve efficient directional recovery of tissue fragments during high-pressure water jet rotary cutting.

[0016] Preferably, the connection port includes: Quick docking buckle, detachable connection to negative pressure pipeline; The pressure sensor monitors the negative pressure in the sheath cavity in real time.

[0017] By adopting the above technical solution and through modular functional integration design, the quick docking buckle realizes plug-and-play connection with the negative pressure pipeline through redundant sealing structure, ensuring the convenience and airtightness of pipeline switching during operation. The embedded pressure sensor and the negative pressure pump control system form a closed-loop feedback mechanism, which tracks the pressure fluctuations in the sheath cavity in real time and dynamically adjusts the adsorption strength, maintaining stable tissue adsorption force and avoiding tympanic membrane damage caused by negative pressure overload.

[0018] Endoscopic and sheath waterjet treatment methods include: During treatment, the endoscope sheath enters the target area through a natural cavity or wound channel. The insertion portion of the electronic endoscope extends into the lumen of the sheath tube. The camera system and the transparent blind end provide real-time image positioning. A negative pressure pump establishes a negative pressure environment through the connection port. The spirally arrayed adsorption ports adsorb the target tissue into the lumen of the sheath tube, utilizing the physical property differences between necrotic tissue and normal tissue to achieve selective adsorption. S2. The water inlet pipe of the water jet assembly drives the radial micro nozzle to perform 360° coverage cutting through the rotating metal bend section. The high-pressure water flow directionally removes the adsorbed tissue. The waste liquid and debris generated by the cutting are discharged quickly through the spiral guide groove of the return pipe. The negative pressure environment in the sheath cavity simultaneously enhances the waste liquid recovery efficiency.

[0019] The present invention provides an endoscope and a sheath water jet treatment system. It has the following beneficial effects: 1. The present invention uses high-definition imaging to accurately locate lesions, utilizes differences in tissue physical properties, and forms a dynamic negative pressure field through the spiral adsorption port to achieve targeted adsorption. The adsorption force is regulated to enhance the capture of diseased tissue and inhibit the traction of healthy tissue, thereby improving the debridement efficiency while significantly reducing the incidence of complications and ensuring the safety of minimally invasive cavity treatment.

[0020] 2. The present invention achieves 360° three-dimensional cutting without dead angles by rotating a metal elbow to drive a radial micro-nozzle, combines high-pressure water flow to accurately ablate lesions, and simultaneously utilizes the spiral guide groove of the sheath and the negative pressure environment to form a fluid synergistic effect, thereby eliminating the risk of tissue residue and significantly improving the safety and efficiency of minimally invasive surgery in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the endoscope and sheath water jet treatment system of the present invention; Figure 2 It is a schematic diagram of the local structure of the mirror sheath of the present invention.

[0022] Among them, 1. Insertion part; 2. Clamp opening; 3. Operation part; 4. Connection port; 5. Adsorption port. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Please see the attached Figure 1 and attached Figure 2 The embodiment of the present invention provides an endoscope and a sheath water jet treatment system, comprising: Insertion part 1, which is integrated with a camera system and a light source; The operating unit 3 includes a control module and a human-computer interaction interface. The control module is connected to the negative pressure pump and the water jet assembly via a cable or wireless signal, and is used to dynamically adjust the negative pressure adsorption intensity and the water jet spray parameters; The operating unit 3 is connected to the camera system and the electronic endoscope for real-time synchronous feedback of image data and operating instructions; A tubular endoscope sheath capable of accommodating the insertion portion 1, with a connection port 4 connected to a negative pressure pump at its proximal end and a transparent blind end at its distal end; Multiple adsorption ports 5 are distributed circumferentially on the side wall of the sheath, and the adsorption ports 5 form a negative pressure channel through the inner cavity of the sheath tube and the connecting port 4; The water jet assembly includes a water inlet pipe rotatably arranged through the insertion portion 1 and the clamp opening 2, and a return pipe arranged in the inner cavity of the sheath; A high-pressure water nozzle is provided at the far end of the water inlet pipe, and the proximal end is connected to the water jet system.

[0025] Specifically, through the coordinated design of the electronic endoscope with an integrated camera system and a detachable sheath, precise debridement of diseased tissue in the cavity can be achieved. The camera system and light source of the electronic endoscope provide real-time visual operation field of view. The circumferential adsorption port 5 of the sheath directionally adsorbs the target tissue to the inner cavity of the sheath through the negative pressure channel. Combined with the high-pressure water flow of the water jet assembly, tissue cutting is completed in a confined space. At the same time, the reflux pipe realizes the synchronous recovery of waste liquid and tissue, thereby utilizing the difference in physical properties to selectively adsorb necrotic tissue, and avoiding accidental injury to normal tissue by limiting the operating range of the water jet, ultimately achieving a safe, efficient and minimally invasive debridement treatment effect.

[0026] The transparent blind end of the mirror sheath is a hemispherical structure with a light transmittance of ≥85%, and is made of medical-grade polycarbonate.

[0027] Specifically, the transparent blind end of the sheath adopts a hemispherical structure and medical-grade polycarbonate material, which can provide the endoscope with an unobstructed field of view for observing external tissues in the sheath. At the same time, the smooth spherical contour reduces mechanical damage to normal tissues in the cavity. The high light transmittance of the transparent blind end ensures that the camera system can clearly capture real-time images of the lesion area in the cavity. The hemispherical structure not only ensures the smoothness of the sheath when it is pushed into the cavity, protecting normal tissues, but also provides physical isolation protection for the water jet component's cutting operation in the sheath cavity.

[0028] The adsorption ports 5 are arranged in a spiral array, with an aperture of 0.8-1.2 mm, and the distance between adjacent adsorption ports 5 is 3 to 5 times the aperture.

[0029] Specifically, the adsorption port 5 is arranged in a spiral array, and the negative pressure adsorption range is optimized through a specific geometric layout to form a continuous and uniform adsorption force field. The spiral arrangement enables the adsorption port 5 to have balanced coverage along the axial and circumferential directions of the sheath, ensuring that necrotic tissue at different angles in the cavity can be effectively adsorbed into the sheath lumen, thereby improving the selectivity and operational stability of tissue adsorption, and ultimately achieving the therapeutic effect of efficient directional debridement and full coverage of the lesion area.

[0030] The water inlet pipe includes: The metal curved tube section can be rotated 360 degrees, and its bending radius matches the inner diameter of the mirror sheath; The double-layer PTFE sealed bearing is located at the joint between the clamp opening 2 and the water inlet pipe.

[0031] Specifically, the rotatable metal elbow section of the water inlet pipe and the double-layer PTFE sealed bearing work together to achieve full circumferential flexible movement of the waterjet assembly within the sheath lumen. The 360-degree rotation of the metal elbow enables the high-pressure water nozzle to cover all directions of the sheath lumen, ensuring seamless cutting. The double-layer PTFE sealed bearing maintains the fluid seal at the clamp opening 2 while ensuring the water inlet pipe's rotational freedom, preventing high-pressure water leakage from disrupting the negative pressure adsorption effect. The structural coordination of the two ensures both the dynamic adaptability of the waterjet operation and the overall stability and safety of the system operation.

[0032] The end of the metal curved pipe section is provided with 3-5 radially distributed micro nozzles, and the axis of each nozzle forms an angle of 15°-30° with the pipe body.

[0033] Specifically, the radial micro-nozzles at the end of the curved metal tube segment expand the high-pressure water jet's cutting coverage and control its direction through multi-angle water flow distribution. The radial nozzle layout and the angle between the tube axis, combined with the rotating function of the curved metal tube segment, form a three-dimensional cutting network, ensuring that tissue adsorbed into the sheath lumen is evenly removed. At the same time, the tilted spray angle reduces the impact of the water flow on the inner wall of the sheath, preventing damage to the device structure. This design achieves a dual balance between high-efficiency cutting and device self-protection, improving the overall controllability of the debridement operation.

[0034] The inner wall of the return pipe is provided with a spiral guide groove, and the pitch of the guide groove gradually decreases along the direction of the fluid.

[0035] Specifically, the spiral guide groove on the inner wall of the return pipe optimizes the fluid dynamics characteristics by gradually reducing the pitch to improve the waste liquid recovery efficiency. The tapered structure of the spiral guide groove guides the waste liquid and cutting debris to form a vortex flow along the pipe wall, enhancing the flow guidance and reducing turbulent resistance. At the same time, the gradient-changing pitch gradually accelerates the fluid during the flow process to avoid debris deposition. Through active regulation of fluid mechanics, it not only ensures the smooth discharge of waste, but also reduces the risk of blockage inside the return pipe.

[0036] The connection port 4 includes: Quick docking buckle, detachable connection to negative pressure pipeline; The pressure sensor monitors the negative pressure in the sheath cavity in real time.

[0037] Specifically, the quick docking buckle of the connection port 4 works together with the pressure sensor to achieve efficient connection and safe monitoring of the negative pressure system. The quick docking buckle ensures the rapid assembly and disassembly of the negative pressure pump and the sheath through standardized interface design, thereby improving the convenience of operation. The pressure sensor provides real-time feedback on the negative pressure state of the sheath lumen, dynamically adjusts the adsorption intensity to prevent excessive adsorption from damaging normal tissue, thereby ensuring the stability and controllability of negative pressure adsorption, and avoiding the risk of abnormal pressure through intelligent monitoring, ultimately achieving the safety of the treatment process and smooth operation.

[0038] The outer surface of the insertion part 1 is provided with a silicone sealing ring that fits the inner cavity of the sheath tube. The compression amount of the sealing ring is 8% to 12% of the tube diameter.

[0039] Specifically, the silicone sealing ring on the outer surface of the insertion part 1 fits tightly with the inner cavity of the sheath tube through elastic deformation, preventing external liquid from penetrating into the sheath tube during negative pressure adsorption and interfering with the imaging of the camera system, and allowing the insertion part 1 to move axially and rotate circumferentially in the inner cavity of the sheath tube.

[0040] Endoscopic and sheath waterjet treatment methods include: During treatment, the sheath enters the target area through a natural cavity or wound channel. The insertion portion 1 of the electronic endoscope extends into the lumen of the sheath. The camera system and the transparent blind end provide real-time image positioning. A negative pressure pump establishes a negative pressure environment through the connection port 4. The spirally arranged adsorption ports 5 adsorb the target tissue into the lumen of the sheath, utilizing the difference in physical properties between necrotic tissue and normal tissue to achieve selective adsorption. S2. The water inlet pipe of the water jet assembly drives the radial micro nozzle to perform 360° coverage cutting through the rotating metal bend section. The high-pressure water flow directionally removes the adsorbed tissue. The waste liquid and debris generated by the cutting are discharged quickly through the spiral guide groove of the return pipe. The negative pressure environment in the sheath cavity simultaneously enhances the waste liquid recovery efficiency.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Endoscope and sheath water jet treatment system, characterized in that: include: An insertion portion (1), wherein a camera system and a light source are integrated into the insertion portion (1); An operating unit (3) includes a control module and a human-computer interaction interface, wherein the control module is connected to the negative pressure pump and the water jet assembly via a cable or a wireless signal, and is used to dynamically adjust the negative pressure adsorption intensity and the water jet injection parameters; The operating unit (3) is connected to the camera system and the electronic endoscope for real-time synchronous feedback of image data and operating instructions; A tubular mirror sheath capable of accommodating the insertion portion (1), wherein the proximal end of the sheath is provided with a connection port (4) connected to a negative pressure pump and the distal end is a transparent blind end; A plurality of adsorption ports (5) are distributed circumferentially on the side wall of the mirror sheath, and the adsorption ports (5) form a negative pressure channel through the inner cavity of the sheath tube and the connecting port 4); The water jet assembly comprises a water inlet pipe rotatably arranged through the clamp opening (2) of the insertion portion (1), and a return pipe arranged in the inner cavity of the sheath tube; The distal end of the water inlet pipe is provided with a high-pressure water nozzle, and the proximal end is connected to the water jet system.

2. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The transparent blind end of the mirror sheath is a hemispherical structure with a light transmittance of ≥85%, and is made of medical-grade polycarbonate.

3. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The adsorption ports (5) are arranged in a spiral array, with an aperture of 0.8-1.2 mm, and the spacing between adjacent adsorption ports (5) is 3 to 5 times the aperture.

4. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The water inlet pipe comprises: The metal curved tube section can be rotated 360 degrees, and its bending radius matches the inner diameter of the mirror sheath; A double-layer PTFE sealed bearing is provided at the joint between the clamp opening (2) and the water inlet pipe.

5. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The end of the metal curved pipe section is provided with 3-5 radially distributed micro nozzles, and the axis of each nozzle forms an angle of 15°-30° with the pipe body.

6. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The inner wall of the return pipe is provided with a spiral guide groove, and the pitch of the guide groove gradually decreases along the direction of the fluid.

7. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The connecting port (4) comprises: Quick docking buckle, detachable connection to negative pressure pipeline; The pressure sensor monitors the negative pressure in the sheath cavity in real time.

8. The endoscope and sheath water jet treatment system according to claim 1, characterized in that: The outer surface of the insertion portion (1) is provided with a silicone sealing ring that fits the inner cavity of the sheath tube, and the compression amount of the sealing ring is 8% to 12% of the tube diameter.

9. Endoscope and sheath water jet treatment method, characterized in that, The endoscope and sheath water jet treatment system according to any one of claims 1 to 8 comprises: S1. During treatment, the endoscope sheath enters the target area through a natural cavity or wound channel, the insertion portion (1) of the electronic endoscope extends into the lumen of the sheath tube, and real-time image positioning is provided by the camera system and the transparent blind end. The negative pressure pump establishes a negative pressure environment through the connection port (4), and the adsorption port (5) arranged in a spiral array adsorbs the target tissue into the lumen of the sheath tube, and selective adsorption is achieved by utilizing the difference in physical properties between necrotic tissue and normal tissue; S2. The water inlet pipe of the water jet assembly drives the radial micro nozzle to perform 360° coverage cutting through the rotating metal bend section. The high-pressure water flow directionally removes the adsorbed tissue. The waste liquid and debris generated by the cutting are discharged quickly through the spiral guide groove of the return pipe. The negative pressure environment in the sheath cavity simultaneously enhances the waste liquid recovery speed.

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