Transparent cap assembly of medical gastroscope

Abstract

The utility model relates to the technical field of gastric calculus crushing, in particular to a medical gastroscope transparent cap assembly. Comprising a transparent cap and a guide wire tube set, the transparent cap is provided with a free end and a fixed end, the fixed end is suitable for being connected with a component in a sleeved mode, the guide wire tube set comprises a first guide wire tube and a second guide wire tube which are arranged on the outer wall of the transparent cap, and the first guide wire tube and the second guide wire tube are provided with a first inclined penetrating hole, a second inclined penetrating hole, a first section and a second section respectively, the first inclined through hole and the second inclined through hole are at least partially arranged in an inclined manner, so that the first section and the second section of the guide wire can relatively slide, the adjustable coil is expanded or contracted, the guide wire tube group is provided with an assembly part, the assembly part is in sliding connection through the inclined through holes, and rotatable limiting pieces are arranged on the mounting sections at the two ends of the sliding rail. The outer wall of the assembling part is in smooth contact with the side wall of the inclined through hole, and a plurality of drainage channels are further formed in the wire guide pipe. According to the utility model, effective crushing of large-size gastric calculi can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gastric stone crushing, in particular to a transparent cap assembly for a medical gastroscope. Background Art

[0002] Gastric stones are solid lumps formed by the accumulation of undigested food residues, drug residues or other substances in the stomach. These stones can cause varying degrees of stomach discomfort and even pain in patients. Endoscopic treatment measures are usually required to crush and remove the stones.

[0003] When performing gastric stone crushing treatment, you first need to install a transparent cap on the front end of the gastroscope. The main function of the transparent cap is to prevent the lens from being contaminated or damaged due to contact with gastric contents during the operation. Next, the doctor will pass the guide wire and snare through the transparent cap through the working channel of the gastroscope and send it into the stomach. Then, the snare is used to control the guide wire to open and put it on the gastric stone. The snare is then used to control the guide wire to tighten to cut and crush the gastric stone.

[0004] Although existing technologies can effectively crush many types of gastric stones, for gastric stones with larger diameters, the diameter of the guide wire is insufficient to be able to be placed on the gastric stones due to the limited size of the transparent cap aperture. At the same time, gastric stones with larger diameters are more densely clustered, thereby increasing their hardness. For such gastric stones, simply relying on the tightening of the guide wire and snare is difficult to provide sufficient cutting force, which may lead to poor crushing effect or prolonged treatment time. Utility Model Content

[0005] The purpose of the present utility model is to provide a transparent cap assembly for a medical gastroscope, so as to solve the problem in the above-mentioned background technology that the guide wire is difficult to effectively crush large-sized gastric stones.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A medical gastroscope transparent cap assembly comprises a transparent cap and a guide wire tube group; the transparent cap has a free end and a fixed end, the fixed end being suitable for sleeved components; the guide wire tube group comprises a first guide wire tube and a second guide wire tube, both of which are arranged on the outer wall of the transparent cap, the first guide wire tube having a first oblique through-hole, the second guide wire tube having a second oblique through-hole, the first oblique through-hole being suitable for slidably assembling a first section of a guide wire, the second oblique through-hole being suitable for slidably assembling a second section of a guide wire, so that a middle section of the guide wire forms an adjustable coil, wherein the middle section refers to the portion between the first section and the second section of the guide wire; the first oblique through-hole and the second oblique through-hole are at least partially arranged obliquely, and are suitable for the first section of the guide wire to slide along the first oblique through-hole or / and the second section of the guide wire to slide along the second oblique through-hole, so that the adjustable coil forms expansion or contraction; wherein, in a working state, the first section and the second section of the guide wire can slide relative to each other.

[0008] Furthermore, the first oblique through-hole and the second oblique through-hole have the same structure, the wire guide tube group has an assembly part, the oblique through-hole is slidably connected to the assembly part, and is suitable for the assembly part to be slidably extended out or accommodated in the oblique through-hole.

[0009] Furthermore, the first wire guide tube and the second wire guide tube have the same structure, the assembly part has a slide rail, the slide rail is rigid, the slide rail is arranged in the oblique through hole along the extension direction of the oblique through hole, and the slide rail is at least partially embedded in the wire guide tube, which is suitable for reducing the deformation of the wire guide tube in the working state.

[0010] Furthermore, mounting sections are formed at both ends of the slide rail, and the mounting sections extend out of the oblique through-hole. The slide rail has a limiting member, and the limiting member is rotatably mounted on the mounting section, so that when the limiting member rotates internally, both ends of the assembly portion can be slidably stopped at the limiting member.

[0011] Furthermore, the outer wall of the assembly portion is smooth, and the side wall of the oblique through hole is smooth, and the outer wall of the assembly portion is in sliding contact with the side wall of the oblique through hole.

[0012] Furthermore, the wire guide tube is provided with a plurality of drainage channels, and the plurality of drainage channels are all connected to the oblique through-holes.

[0013] Furthermore, along the height direction of the wire guide tube, a height difference is formed between the two ends of the drainage hole, and the end of the drainage hole away from the oblique through hole is located at a lower side.

[0014] The advantages of the transparent cap assembly for medical gastroscope described in the present invention over the prior art are:

[0015] By arranging the first guide wire tube and the second guide wire tube on the outer wall of the transparent cap, and equipping the first oblique perforation and the second oblique perforation with an inclined design, the guide wire can form an adjustable coil. This design makes the expansion and contraction of the adjustable coil no longer restricted by the size of the transparent cap, thereby being able to more effectively trap and crush large-sized gastric stones.

[0016] When in operation, the first and second sections of the guide wire can slide relative to each other, which means that the guide wire no longer relies solely on the contraction of the coil to crush gastric stones. Through the relative sliding of the first and second sections of the guide wire, gastric stones can be cut in a sawing manner. This cutting method can provide greater cutting force, thereby significantly improving the efficiency of crushing gastric stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric view of the present utility model;

[0018] Figure 2 This is one of the structural diagrams of the first wire guide tube of the utility model;

[0019] Figure 3 This is a cross-sectional view of the first wire guide tube of the present invention;

[0020] Figure 4 This is the second cross-sectional view of the first wire guide tube of the present utility model;

[0021] Figure 5 This is a front view of the first wire guide tube of the utility model;

[0022] Figure 6 This is an axonometric view of the first wire guide tube of the present invention.

[0023] Markings and corresponding parts names in the accompanying drawings: A-guide wire, 10-transparent cap, 201-first guide wire tube, 2011-first oblique through hole, 202-second guide wire tube, 2021-second oblique through hole, 30-assembly part, 301-slide rail, 3011-installation section, 40-limiting part, 50-drainage channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Example 1, reference Figure 1The present embodiment provides a medical gastroscope transparent cap assembly, including a transparent cap 10 and a guide wire tube group. As a disposable medical consumable, the transparent cap 10 can be made of a soft and elastic material, such as thermoplastic elastomer (TPE), to reduce irritation to the digestive tract mucosa and adapt to the curved surface changes of the stomach. The TPE material has good biocompatibility, is easy to mold and process, and has appropriate softness and resilience. The transparent cap 10 has a free end and a fixed end. The fixed end is used to sleeve the front end of an endoscope, such as a gastroscope. The main function of the transparent cap 10 is to protect the front end of the endoscope and prevent the lens from being contaminated or damaged during inspection or treatment.

[0026] The guide wire tube group can be integrally formed with the transparent cap 10 to reduce manufacturing costs. The first guide wire tube 201 and the second guide wire tube 202 are arranged axially along the transparent cap 10, and are respectively provided with a first oblique through-hole 2011 and a second oblique through-hole 2021 for assembling the guide wire. The guide wire can be a yellow zebra guide wire, which has high strength and is not easy to break, and is suitable for use in the cutting and crushing process of gastric stones with greater hardness.

[0027] The first oblique perforation 2011 and the second oblique perforation 2021 are at least partially inclined to facilitate sliding of the two ends of the guide wire and realize expansion or contraction of the adjustable coil in the middle section of the guide wire. The design of the oblique perforation allows the two ends of the guide wire to tilt outward along the outer wall of the transparent cap 10, thereby realizing adjustment of the coil to adapt to the crushing needs of larger and different sizes of gastric stones.

[0028] In the working state, the first and second sections of the guide wire can slide relative to each other, and the gastric stones are crushed by utilizing the contraction of the coil. At the same time, the relative sliding of the two ends of the guide wire provides a sawing action, thereby increasing the cutting force and improving the crushing efficiency.

[0029] When performing gastric stone crushing treatment, the doctor assembles the guide wire through the guide wire tube group on the transparent cap 10, and then the doctor sends the gastroscope, the transparent cap 10 at the front end of the gastroscope and the guide wire into the patient's stomach. Under the observation of the gastroscope, the doctor locates the position of the gastric stone, and the end of the guide wire is located outside the patient's mouth. The doctor adjusts the size of the adjustable coil according to the size and shape of the gastric stone by relatively sliding the first and second sections of the guide wire, and uses the adjustable coil to surround the gastric stone. The gastric stone is crushed by the contraction force of the coil and the sawing action of the guide wire. This operation can provide greater cutting force and effectively improve the crushing efficiency.

[0030] Example 2, reference Figure 2-Figure 5Due to the material properties of the transparent cap 10 and the guide wire, if the guide wire slides directly in the oblique perforation to adjust the coil, the guide wire may wear the side wall of the oblique perforation due to the friction between the materials. This wear may cause the guide wire to experience increased resistance when sliding in the oblique perforation, or even get stuck. The jamming phenomenon not only affects the smoothness of the operation, but may also reduce the efficiency of gastric stone cutting, prolong the operation time, and increase patient discomfort.

[0031] Based on the above embodiment, the first oblique perforation 2011 and the second oblique perforation 2021 adopt the same structure, which not only reduces the complexity of the manufacturing process, but also realizes the standardization of components, facilitates production management and cost control, and the guide wire tube group includes an assembly part 30, which is designed to be connected and fixed to the guide wire. The assembly part 30 can also be integrated with an adjustment mechanism, such as a locking device, to ensure the stability of the guide wire during operation.

[0032] Each oblique perforation is equipped with an assembly part 30, and a sliding connection mechanism is adopted between the assembly part 30 and the oblique perforation, allowing the assembly part 30 to slide freely in the oblique perforation. The sliding of the assembly part 30 can realize the adjustment of the coil size, avoiding direct contact between the guide wire and the oblique perforation of the transparent cap 10, reducing wear, ensuring smooth sliding of the guide wire, and improving cutting efficiency.

[0033] It is worth noting that the slidable design of the assembly part 30 simplifies the assembly process of the guide wire. When assembling the guide wire, the doctor only needs to extend the assembly part 30 out of the oblique through-hole to complete the assembly of the guide wire, and then accommodate the assembly part 30 in the oblique through-hole. The design of accommodating the assembly part 30 in the oblique through-hole can reduce unnecessary stimulation to the patient, improve the patient's comfort and the safety of treatment.

[0034] In some embodiments, similarly, the first guide wire tube 201 and the second guide wire tube 202 have the same structure to reduce the complexity of the manufacturing process and achieve standardization of components. Each assembly part 30 has a slide rail 301. The slide rail 301 is made of high-strength material and has sufficient rigidity to support the force of the guide wire during operation and reduce the deformation of the guide wire tube. The slide rail 301 is at least partially embedded in the guide wire tube. This precise embedding design helps to evenly distribute the force applied by the guide wire and further reduce the local deformation of the guide wire tube. By reducing the deformation of the guide wire tube, the slide rail 301 design helps to maintain the stability of the coil cutting state, which is crucial for precise gastric stone cutting. The design of the rigid slide rail 301 improves the durability of the entire component, enabling it to withstand long-term repeated use without performance degradation.

[0035] In a specific implementation, the slide rail 301 can be made of stainless steel with an elastic modulus of approximately 200 GPa to ensure that the slide rail 301 has sufficient rigidity. At the same time, under a force not exceeding 100 N, the deformation of the slide rail 301 should not exceed 0.01 mm.

[0036] In some embodiments, mounting sections 3011 are formed at both ends of the slide rail. These mounting sections 3011 are designed to extend out of the oblique through-holes so as to be connected or fixed to external components. The slide rail has a limit member 40. These limit members 40 are designed to be rotatably mounted on the mounting section 3011 to provide a limiting function for the sliding of the assembly part 30. The limit member 40 and the mounting section 3011 can be made of biocompatible materials, such as medical stainless steel or bioplastics, to ensure safety when in contact with the human body. A threaded connection can be used between the limit member 40 and the mounting section 3011 to facilitate doctors to quickly adjust and fix the position of the limit member 40.

[0037] It is worth noting that when the assembly part 30 is accommodated in the oblique through-hole, the limiting part 40 is rotated to a specific position. When the assembly part 30 slides in the oblique through-hole, the two ends of the assembly part 30 can slide and stop at the limiting part 40. Through the rotation of the limiting part 40 and the sliding stop of the assembly part 30, the doctor can accurately control the adjustment range of the coil to ensure the accurate execution of the operation. The correct positioning of the limiting part 40 can also avoid accidental dislocation of the assembly part 30 during the operation, reducing the risk of injury to the patient.

[0038] In other embodiments, the outer wall of the assembly portion 30 is designed to be smooth to reduce the friction coefficient when in contact with the side wall of the oblique perforation. The side wall of the oblique perforation is also smoothed, which can be achieved by mechanical polishing or chemical treatment. Through this design, the assembly portion 30 has smoother contact when sliding in the oblique perforation, reducing resistance and wear.

[0039] In a specific implementation, a 0.005 mm thick DLC coating is applied to the outer wall of the assembly portion 30 and the side wall of the oblique through hole to reduce the friction coefficient to below 0.1. At the same time, a precision polishing process, such as mirror polishing, can be used to ensure that the surface roughness Ra value of the inner wall of the oblique through hole is less than 0.1 microns.

[0040] Through the design of this embodiment, the design of the transparent cap assembly focuses more on practicality, safety and patient experience. The standardized and optimized sliding connection reduces wear and improves durability; the innovative coil adjustment mechanism improves surgical efficiency; the simple assembly process and improved patient comfort enhance the user experience; these improvements make the transparent cap assembly an efficient, safe and user-friendly medical tool.

[0041] Example 3, reference Figure 6Based on the above embodiment, a plurality of drainage channels 50 are designed on the guide wire tube, each drainage channel 50 is connected to the oblique through-hole, and these channels are intended to provide a path so that the gastric fluid entering the transparent cap 10 can be discharged from the inside of the transparent cap 10. The design of the drainage channel 50 helps to reduce the accumulation of gastric fluid in the transparent cap 10, reduce the risk of infection, and improve the smoothness of the sliding of the assembly part 30.

[0042] In specific implementation, the drainage channel 50 can adopt an elliptical design to provide a larger drainage area while reducing the material usage of the guide wire tube. The diameter of the drainage channel 50 can be designed to be 0.5 mm, and a filter screen with a pore size of 0.05 mm can be designed at the entrance of the drainage channel 50 to prevent tissue fragments or other substances from clogging the channel.

[0043] In some embodiments, a height difference is designed at both ends of the drainage channel 50 along the height direction of the wire guide tube, and gravity is used to help the liquid flow. The end of the drainage channel 50 away from the oblique perforation is designed on the low side, so that the liquid can naturally flow to this end and be discharged.

[0044] In a specific implementation, six drainage channels 50 can be evenly arranged around the circumference of the guide wire tube to ensure 360-degree all-round liquid drainage. The height difference between the two ends of the drainage channel 50 can be set to 2 mm to adapt to different surgical positions and liquid flow requirements. The lower side opening of the drainage channel 50 can be designed to be beveled and open outward at a 45-degree angle to reduce the possibility of backflow. A layer of smooth biocompatible coating, such as PTFE, can also be applied to the inner surface of the drainage channel 50 to reduce the friction coefficient.

[0045] Through the design of this embodiment, the design of the drainage channel 50 of the transparent cap assembly will be more efficient and safer, which will help improve the overall performance of the operation and patient safety.

[0046] Working principle: When the device is in use, the transparent cap assembly is installed at the front end of the endoscope. The doctor introduces the guide wire into the guide wire tube group. The two ends of the guide wire pass through the first and second oblique through-holes 2021 and are connected and fixed to the assembly part 30. By operating the assembly part 30, the assembly part 30 can be extended or accommodated in the oblique through-hole to avoid unnecessary stimulation to the patient.

[0047] The doctor operates the endoscope and inserts the transparent cap assembly into the patient's stomach. Through endoscopic observation, the doctor locates the position of the gastric stones. The doctor controls the assembly part 30 to form an adjustable coil in the middle section of the guide wire to adapt to the size and shape of the gastric stones. The doctor uses the adjustable coil to cut the gastric stones by relatively sliding the first and second sections of the guide wire. Through repeated cutting actions of the guide wire, the gastric stones are gradually crushed. The limiter 40 can prevent the assembly part 30 from being accidentally dislocated during the operation.

[0048] During the operation, if liquid accumulates inside the transparent cap 10, the drainage channel 50 uses the height difference principle to help the liquid drain out. After the gastric stones are crushed, the doctor removes the endoscope and the transparent cap assembly from the patient's body.

[0049] References to multiple illustrative embodiments in this specification mean that the specific structure described in conjunction with that embodiment is included in at least one embodiment generally described in this application. The appearance of the same term in multiple places in this specification does not necessarily refer to the same embodiment. Furthermore, when a structure is described in conjunction with any one embodiment, it is intended that such structure, when implemented in conjunction with other embodiments, falls within the scope of the present invention.

Claims

1. A medical gastroscope transparent cap assembly, characterized in that: include: A transparent cap having a free end and a fixed end, wherein the fixed end is suitable for sleeve-engaging a component; A wire guide tube group, comprising a first wire guide tube and a second wire guide tube, wherein the first wire guide tube and the second wire guide tube are both arranged on the outer wall of the transparent cap, the first wire guide tube having a first oblique through-hole, the second wire guide tube having a second oblique through-hole, the first oblique through-hole being suitable for slidably assembling a first section of the guide wire, and the second oblique through-hole being suitable for slidably assembling a second section of the guide wire, so that a middle section of the guide wire forms an adjustable coil, wherein the middle section refers to a portion between the first section and the second section of the guide wire; The first oblique through-hole and the second oblique through-hole are at least partially inclined, so that the adjustable coil expands or contracts after the first section of the guide wire slides along the first oblique through-hole and / or the second section of the guide wire slides along the second oblique through-hole; Wherein, in a working state, the first section and the second section of the guide wire can slide relative to each other.

2. The medical gastroscope transparent cap assembly according to claim 1, characterized in that: The first oblique through-hole and the second oblique through-hole have the same structure. The wire guide tube assembly has an assembly portion. The oblique through-hole is slidably connected to the assembly portion, and is suitable for the assembly portion to be slidably extended out or accommodated in the oblique through-hole.

3. The medical gastroscope transparent cap assembly according to claim 2, characterized in that: The first wire guide tube and the second wire guide tube have the same structure. The assembly part has a slide rail, which is rigid. The slide rail is arranged in the oblique through hole along the extension direction of the oblique through hole. The slide rail is at least partially embedded in the wire guide tube, which is suitable for reducing the deformation of the wire guide tube in the working state.

4. The transparent cap assembly for medical gastroscope according to claim 3, characterized in that: The two ends of the slide rail are formed with mounting sections, and the mounting sections extend out of the oblique through-hole. The slide rail has a limiting piece, and the limiting piece is rotatably mounted on the mounting section, so that when the limiting piece rotates internally, both ends of the assembly portion can be slidably stopped at the limiting piece.

5. The medical gastroscope transparent cap assembly according to claim 4, characterized in that: The outer wall of the assembly portion is smooth, and the side wall of the oblique through hole is smooth, and the outer wall of the assembly portion is in sliding contact with the side wall of the oblique through hole.

6. The medical gastroscope transparent cap assembly according to claim 5, characterized in that: The wire guide tube is provided with a plurality of drainage channels, and the plurality of drainage channels are all communicated with the oblique through-holes.

7. The medical gastroscope transparent cap assembly according to claim 6, characterized in that: Along the height direction of the wire guide tube, a height difference is formed at both ends of the drainage channel, and the end of the drainage channel away from the oblique through hole is located at a lower side.

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