Negative pressure sleeve device

Abstract

The invention discloses a negative pressure sleeve device, which comprises a film fixing mechanism, a sealing chamber, a pressure gauge, a sensor, a high-performance vacuum pump, a pedal and a power supply, and relates to the technical field of negative pressure fixing sleeves, a high-molecular plastic film coated on the outer layer of a metal pipe enables the metal pipe to enter a human body more smoothly, and the harm is effectively avoided; the device can remarkably improve the detection and inspection effect, and can better assist in detection and improve accuracy and intuition compared with a traditional catheter; the sleeve part is excellent in performance, has high tensile strength and yield strength, and is oil-resistant, wear-resistant and aging-resistant; the clamping part is reasonable in design, convenient to operate and firm in structure, and an embedded structure and an elastic sheet are adopted, so that a sleeve is convenient to insert.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure fixed sleeves, in particular to a negative pressure sleeve device. Background Art

[0002] With the current situation, in order for patients to receive more effective medical treatment, various tests are needed to control or avoid the risks brought by surgery. Instruments that can be used in conjunction with endoscopes to establish surgical channels are needed to conduct the first step of inspection and screening. This is AI-assisted diagnosis. Usually, we use slender catheters for detection. Due to the narrow inner diameter and softness of the catheter, it does not play a good and intuitive detection and inspection role. Therefore, some thicker metal tubes are needed to replace the soft catheters. However, the use of hard metal tube materials is risky and will damage blood vessels and tissues, increasing patient pain. We specifically study a pipeline that does not damage blood vessels and tissues and can better assist in detection and detection. A soft polymer film is put on the metal tube, which can meet the market demand. Since the inner diameter of the thin film polymer tube is smaller than the outer diameter of the metal tube, it cannot be inserted normally. In view of this, we conducted in-depth research on the above issues, and this case came into being. Summary of the Invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: a negative pressure cannula device, comprising: a film fixing mechanism, a sealed chamber, a pressure gauge, a sensor, a high-performance vacuum pump, a foot pedal, and a power supply, wherein the film fixing mechanism is connected to the sealed chamber, the pressure gauge is connected to the sealed chamber, the sensor is connected to the pressure gauge, the high-performance vacuum pump is connected to the sensor, the foot pedal and the power supply are connected to the high-performance vacuum pump, and the power supply is connected to the sealed chamber; the film fixing mechanism includes: a support seat and a fixed cannula;

[0004] The fixed sleeve is inserted into the inner side of the support seat, the tip of the fixed sleeve is provided with a thin film polymer material tube, the inner side of the fixed sleeve is provided with a metal tube, and the metal tube is movably inserted into the inner side of the fixed sleeve.

[0005] Preferably, the sealed chamber comprises: a nut, a negative pressure tube and a heating wire;

[0006] The nut is sleeved on the fixed sleeve through a thread, the negative pressure tube is installed on the nut through a thread, and the heating wire is connected to the negative pressure tube and the power supply.

[0007] Preferably, a sealing ring is provided at the connection between the nut and the negative pressure tube.

[0008] Preferably, a limiting groove is provided at the tail of the nut.

[0009] Preferably, the inner diameter of the thin film polymer material tube is smaller than the outer diameter of the fixed sleeve.

[0010] Preferably, the outer diameter of the metal tube is consistent with the inner diameter of the fixed sleeve.

[0011] Preferably, the clamping part of the film fixing mechanism adopts a multi-elastic thin sheet structure, the wall thickness of a single sheet is ≤0.5mm and is evenly distributed along the circumference to form an elastic clamping surface, the surface roughness of the front end cone head Ra ≤0.4μm, and the cone inclination angle is precisely controlled at 15°±1°.

[0012] Preferably, when the thin film polymer material tube is wrapped by a heat shrinkage process, the axial shrinkage rate of the film is ≥15% to form an interference fit layer of 0.2-0.5 mm.

[0013] Preferably, the heating wire is spirally embedded in the wall of the negative pressure pipe.

[0014] Preferably, the sensor is integrated with a dual-channel pressure monitoring module

[0015] Beneficial effects

[0016] The present invention provides a negative pressure cannula device. It has the following beneficial effects: a polymer plastic film coated on the outer layer of a metal tube allows for smoother insertion into the human body, effectively preventing injury; the device can significantly improve detection and inspection effectiveness, and compared to traditional catheters, it better assists detection, enhancing accuracy and intuitiveness; the cannula portion has excellent performance, high tensile strength and yield strength, and is oil-resistant, wear-resistant, and aging-resistant; the clamping portion is rationally designed, easy to operate, and has a sturdy structure, employing an embedded structure and elastic sheets to facilitate cannula insertion; the negative pressure device portion is fully functional, utilizing an air pump to create a vacuum, and is equipped with a heating function and pressure monitoring to ensure stable operation of the device; auxiliary devices such as a foot pedal are easy to operate, the overall design is rational and practical, and the various components work closely together, improving surgical efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall assembly of a negative pressure sleeve device according to the present invention.

[0018] Figure 2 This is a schematic diagram of the installation of a film fixing mechanism of a negative pressure sleeve device described in the present invention.

[0019] Figure 3 This is a schematic diagram of the assembly and disassembly of a film fixing mechanism of a negative pressure sleeve device according to the present invention.

[0020] Figure 4 This is a schematic diagram of a sealed chamber of a negative pressure cannula device according to the present invention.

[0021] In the figure: 1. Film fixing mechanism; 2. Sealing chamber; 3. Pressure gauge; 4. Sensor; 5. High-performance vacuum pump; 6. Foot pedal; 7. Power supply; 8. Metal tube; 9. Film polymer material tube; 11. Support seat; 12. Fixed sleeve; 21. Nut; 22. Negative pressure tube; 23. Heating wire. DETAILED DESCRIPTION

[0022] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0023] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0024] Example

[0025] See also Figure 1-4 In the current context of medical technology development, in order to improve surgical precision and minimize the risk of invasive procedures, there is an urgent need for clinical development of dedicated channel instruments for use with endoscopes. Traditional flexible catheter-type detection devices have structural defects: although their slender tubes have certain bending properties, the limited tube diameter leads to a restricted imaging field of view, and the tube wall is not flexible enough to form an effective support channel. If a rigid metal catheter is used as a replacement, although the channel stability can be improved, the direct contact between the hard material and the blood vessel wall and soft tissue will significantly increase the risk of iatrogenic injury, causing patient discomfort and complications. Using heat shrinkage or elastic deformation technology, a polymer film with an inner diameter smaller than the outer diameter of the metal catheter is tightly wrapped, ensuring assembly stability while preventing wrinkles from affecting operation. The outer film provides a flexible buffer interface, effectively dissipating the contact stress between the metal catheter and human tissue, reducing the risk of blood vessel wall abrasions by more than 80%. The composite structure combines the structural strength of the metal catheter with the biocompatibility of the polymer material. While ensuring the operating space of the endoscope, the detection device maintains sufficient axial rigidity to traverse complex anatomical pathways and radial flexibility to adapt to the direction of vascular branches.

[0026] Therefore, this application protects a negative pressure fixed sleeve 12 device. By precisely limiting the fixed sleeve 12 on the support seat 11 and flexibly inserting the fixed sleeve 12 into the interior of the thin film polymer material tube 9 with the help of the support seat 11, multiple support seats 11 equipped with elastic sheets work together to initially expand the thin film polymer material tube 9. These elastic sheets have excellent elastic properties and can flexibly control the expansion diameter to accommodate thin film polymer material tubes 9 with different inner diameters. During operation, it is only necessary to select the appropriate sleeve specification according to the inner diameter of the thin film polymer material tube 9. As the sleeve is gradually advanced, the thin film polymer material tube 9 is slowly and evenly expanded, greatly facilitating the insertion process of the fixed sleeve 12 into the interior of the thin film polymer material tube 9. After the fixed sleeve 12 is accurately positioned, the support seat 11 is released to achieve a secure positioning of the fixed sleeve 12 on the inner side of the thin film polymer material tube 9; thereafter, the metal tube 8 is inserted into the gap between the fixed sleeve 12 and the thin film polymer material tube 9. The thin film polymer material tube 9 can be easily inserted into the interior of the negative pressure tube 22 by utilizing the guiding effect of the metal tube 8. The core working principle of this negative pressure sleeve device is that the high-performance vacuum pump 5 drives the negative pressure device through the circular motion of the motor to cause the thin film polymer material tube 9 in the negative pressure tube 22 to perform reciprocating motion. During this process, the negative pressure causes the thin film polymer material tube 9 to expand, thereby compressing and stretching the air in the fixed volume of the negative pressure tube 22, and ultimately forming the required vacuum (negative pressure) environment; to ensure the stable operation and precise control of the device, the system is also equipped with auxiliary equipment such as a heating wire 23, a pressure gauge 3 and a sensor 4. The heating wire 23 can quickly increase the temperature of the thin film polymer tube 9, causing it to undergo thermal expansion, further optimizing the cannula insertion process; while the pressure gauge 3 and sensor 4 monitor the pressure changes in the cannula in real time, providing accurate data support for pressure regulation and ensuring that the entire system always operates in optimal conditions;

[0027] Furthermore, during the assembly process, special attention should be paid to the sealing performance. After taking out the metal tube 8, a nut 21 with a sealing ring / gasket should be used to tightly connect it to the negative pressure tube 22 to ensure the airtightness of the system. The other end of the negative pressure tube 22 is connected to the pipeline, and the pipeline is connected in sequence with a pressure gauge 3, a sensor 4, a high-performance vacuum pump 5 and a power supply 7 interface of the heating wire 23. During operation, it is only necessary to turn on the power supply 7, step on the foot switch 6, and fully insert the metal tube 8 into the negative pressure tube 22 until its rear end is flush with the rear end limit of the nut 21, then turn off the power supply 7, loosen the nut 21 and take out the metal tube 8, and the whole set of operation procedures for the metal tube 8 set of polymer plastic film can be successfully completed.

[0028] In summary, this negative pressure cannula device demonstrates significant application value in the medical and health fields due to its superior performance and broad application prospects. Its metal base and cannula ensure durability and high tensile strength. Its embedded structural design and the use of elastic sheets significantly enhance operational convenience and adaptability. Furthermore, through real-time monitoring and adjustment by pressure gauge 3 and sensor 4, the device precisely controls pressure changes within the cannula, ensuring safety and stability during surgery or experiments.

[0029] 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. A negative pressure cannula device, comprising: A film fixing mechanism, a sealed chamber, a pressure gauge, a sensor, a high-performance vacuum pump, a foot pedal, and a power supply, wherein the film fixing mechanism is connected to the sealed chamber, the pressure gauge is connected to the sealed chamber, the sensor is connected to the pressure gauge, the high-performance vacuum pump is connected to the sensor, the foot pedal and the power supply are connected to the high-performance vacuum pump, and the power supply is connected to the sealed chamber, characterized in that the film fixing mechanism includes: a support seat and a fixing sleeve; The fixed sleeve is inserted into the inner side of the support seat, the tip of the fixed sleeve is provided with a thin film polymer material tube, the inner side of the fixed sleeve is provided with a metal tube, and the metal tube is movably inserted into the inner side of the fixed sleeve.

2. A negative pressure sleeve device according to claim 1, characterized in that: The sealed chamber includes: a nut, a negative pressure tube and a heating wire; The nut is sleeved on the fixed sleeve through a thread, the negative pressure tube is installed on the nut through a thread, and the heating wire is connected to the negative pressure tube and the power supply.

3. A negative pressure sleeve device according to claim 2, characterized in that: A sealing ring is provided at the connection between the nut and the negative pressure tube.

4. A negative pressure sleeve device according to claim 3, characterized in that: A limiting groove is provided at the tail of the nut.

5. A negative pressure sleeve device according to claim 4, characterized in that: The inner diameter of the thin film polymer material tube is smaller than the outer diameter of the fixed sleeve.

6. A negative pressure cannula device according to claim 5, characterized in that: The outer diameter of the metal tube is consistent with the inner diameter of the fixed sleeve.

7. A negative pressure cannula device according to claim 6, characterized in that: The clamping part of the film fixing mechanism adopts a multi-elastic thin sheet structure, the wall thickness of a single sheet is ≤0.5mm and is evenly distributed along the circumference to form an elastic clamping surface, the surface roughness of the front end cone head Ra ≤0.4μm, and the cone inclination angle is precisely controlled at 15°±1°.

8. A negative pressure cannula device according to claim 7, characterized in that: When the thin film polymer material tube is wrapped by a heat shrinkage process, the axial shrinkage rate of the film is ≥15% to form an interference fit layer of 0.2-0.5 mm.

9. The negative pressure cannula device according to claim 8, characterized in that: The heating wire is spirally embedded in the wall of the negative pressure pipe.

10. The negative pressure cannula device according to claim 9, characterized in that: The sensor is integrated with a dual-channel pressure monitoring module.

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