A structure capable of quickly replacing a water-tight isolation membrane

Abstract

The utility model discloses a structure that can quickly replace water -tight isolation membrane, including the cylinder for containing water medium, water -tight isolation membrane, the cylinder is hollow circular thin -walled cylinder, and the lower end outside of cylinder is equipped with the annular boss that extends outward, the annular boss outer wall is equipped with the annular clamping groove, the edge of water -tight isolation membrane is equipped with the cooperation edge portion for embedding in the annular clamping groove, the cylinder outside is equipped with the sliding sleeve, the sliding sleeve can slide along the axial direction of cylinder, realizes water -tight isolation membrane pressure tight fixed when moving down, and makes water -tight isolation membrane expose when moving up to replace, the sliding sleeve is inserted with the guide column, be equipped with the compression spring on the guide column, and this structure has the advantages of convenient replacement, reliable sealing, simple structure.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a structure that allows for quick replacement of a watertight isolation membrane. Background Technology

[0002] Some medical devices typically rely on liquid media, such as water, as a conduction medium to transfer therapeutic energy from the device to the patient's body. To prevent liquid leakage and ensure the stability of the energy transfer process, a watertight membrane is often installed at the end of the device to seal the water.

[0003] Currently, common watertight isolation membrane installation methods in medical devices mainly include mechanical fixation, pre-packaged disposable membrane structures, and vacuum adsorption. Mechanical fixation structures typically use threaded clamps and snap rings to press the isolation membrane against the acoustic window of the treatment head, achieving a seal through external clamping. While this method allows for reusability, replacement requires complete release of the clamps, repositioning, and tightening, involving numerous steps and impacting replacement efficiency. Furthermore, its sealing effect relies on manual tightening force. Pre-packaged disposable membrane structures are commonly used in portable devices, where the isolation membrane and coupling agent are integrally molded and encapsulated within the treatment head. Each use requires replacement of the entire membrane assembly, resulting in high consumable costs and poor device compatibility. Vacuum adsorption structures integrate a vacuum pump, air passage, and detection module into the device, making the system complex and costly. They also require high environmental stability; leaks or blockages can cause membrane loosening or even treatment interruption, and prolonged negative pressure may irritate the skin of some patients.

[0004] Therefore, it is still necessary to provide a watertight membrane installation structure that is simple in structure, has an optimized operation process, and is suitable for multiple quick replacements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a watertight isolation membrane installation structure that is simple in structure, easy to operate, and suitable for quick replacement, so as to effectively reduce the difficulty of manual assembly, improve the replacement efficiency, and thus meet the comprehensive application needs of medical equipment in terms of high frequency use, environmental adaptability and safety.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a structure that can quickly replace a watertight isolation membrane, including a cylinder for containing water medium and a watertight isolation membrane, characterized in that: the cylinder is a hollow circular thin-walled cylinder, and an outwardly extending annular boss is provided on the outer side of the lower end of the cylinder, and an annular groove is provided on the outer wall of the annular boss; the edge of the watertight isolation membrane is provided with a mating edge portion for embedding into the annular groove; a sliding sleeve is sleeved on the outside of the cylinder, and the sliding sleeve can slide along the axial direction of the cylinder; a guide post is inserted into the sliding sleeve, and a compression spring is provided on the guide post.

[0007] Furthermore, the sliding sleeve has a first protrusion on the side near the cylinder, and the outer wall of the cylinder has a second protrusion corresponding to the first protrusion. When the sliding sleeve moves to the bottom end, the first protrusion abuts against the annular boss to form a limiting fit. When the sliding sleeve moves to the top end, the first protrusion contacts and aligns with the second protrusion.

[0008] Furthermore, a bend is welded to the outer wall of the cylinder, and the end of the guide post away from the sliding sleeve passes through the bend and extends out of the bend in the axial direction.

[0009] Furthermore, the cross-section of the annular groove is a trapezoidal structure, which includes a vertical sidewall and an inclined sidewall. The vertical sidewall is located on one side of the sliding sleeve, and the mating edge is a trapezoidal flange structure that matches the trapezoidal structure.

[0010] The beneficial effects of this utility model are:

[0011] This utility model adopts a combination design of cylindrical and sliding sleeve structure, which can complete the maintenance operation by simply replacing the watertight isolation membrane body. The overall structure is simple, which helps to reduce the cost of consumables and reduce material waste.

[0012] This invention, by setting a guide post and a compression spring mechanism in the sliding sleeve, enables the sliding sleeve to automatically reset after being pushed axially, and forms a limiting fit with the protruding structure on the outer wall of the cylinder, so that the installation and disassembly of the membrane does not require complicated tools, the operation process is simple and efficient, and it can effectively reduce the difficulty of manual assembly and improve the replacement efficiency.

[0013] This invention features a positioning boss and an annular groove on the outer side of the cylinder, which, together with the edge of the matching isolation membrane, enable stable insertion. The bidirectional limiting structure of the sliding sleeve ensures accurate membrane assembly, improving sealing reliability and structural stability, and contributing to enhanced safety and consistency during equipment operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the watertight structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the replacement state structure of this utility model;

[0016] Figure 3 This is the utility model Figure 1 A magnified view of part I in the image;

[0017] In the figure, 1-cylinder; 11-annular boss; 12-annular groove; 13-second protrusion; 2-watertight isolation membrane; 21-fitting edge; 3-sliding sleeve; 31-first protrusion; 4-guide post; 5-compression spring; 6-corner piece. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] This invention provides a structure that allows for quick replacement of the watertight sealing membrane, such as... Figure 1 and Figure 3 The diagram shows the structure in a watertight state, including a cylinder 1, a watertight isolation membrane 2, a sliding sleeve 3, a guide post 4, a compression spring 5, and a bent component 6. The cylinder 1 is a hollow, thin-walled circular cylinder used to contain the liquid medium. The sliding sleeve 3 is fitted onto the outside of the cylinder 1 and can move up and down axially. An outwardly extending annular boss 11 is provided on the outer side of the lower end of the cylinder 1, and an annular groove 12 is provided on the outer wall of the annular boss 11. The edge of the watertight isolation membrane 2 has a mating edge portion 21 that matches the shape of the annular groove 12. The cross-sectional shape of the annular groove 12 is a right trapezoid, including a vertical sidewall and an inclined sidewall, with the vertical sidewall located on one side of the sliding sleeve 3. Correspondingly, the mating edge portion 21 of the watertight isolation membrane 2 also has a trapezoidal flange structure. When the assembly is in a watertight state, its mating edge portion 21 is embedded in the groove 12, achieving initial positioning through structural fit. At this point, the sliding sleeve 3 is in the bottom position, making direct contact with the vertical sidewall of the mating edge 21 of the watertight isolation membrane 2, thereby stably fitting the mating edge 21 of the watertight isolation membrane 2 into the slot 12. Furthermore, the sliding sleeve 3 has a first protrusion 31 on the side near the cylinder. When the sliding sleeve moves to the bottom position, this protrusion directly abuts against the annular boss 11, forming an axial limiting fit, restricting the sliding sleeve from continuing to slide downwards and maintaining a watertight state.

[0020] The sliding sleeve 3 and the cylinder 1 are connected and guided by a guide post 4. The guide post 4 passes through the bend 6 on the outer wall of the cylinder 1, and a reserved length is left in the bend 6 so that the end of the guide post 4 away from the sliding sleeve 3 is limited to the left and right within the bend. At the same time, its axial extension section is used to bear the force during the movement of the sliding sleeve, so as to achieve both structural stability and guidance. A compression spring 5 is installed between the sliding sleeve 3 and the guide post 4. In the watertight state, the compression spring 5 is in a free state.

[0021] In another embodiment of this patent, the outer surface of the cylinder 1 may be provided with a guide strip extending along the axial direction, and the inner wall of the sleeve 3 is provided with a limiting groove that cooperates with the guide strip. The guide strip and the groove constitute an auxiliary sliding structure, which is used to further limit the radial sway of the sleeve during the sliding process and improve the reliability and life of the overall structure under repeated operation.

[0022] When it is necessary to replace the watertight isolation membrane 2, such as Figure 2As shown, under the action of external force, the sliding sleeve 3 moves upward along the guide post 4, the compression spring 5 is compressed and stores energy, the first protrusion 31 disengages from the position of the annular boss 11, and finally aligns with the second protrusion 13 on the outer wall of the cylinder. At this time, a sufficient gap is left between the sliding sleeve and the annular groove 12, which makes it easy for the operator to remove the old membrane and insert the mating edge 21 of the new membrane into the groove 12. After the replacement is completed, the sliding sleeve 3 is released, the compression spring 5 is released elastically and drives the sliding sleeve to fall back, the first protrusion 31 abuts against the annular boss 11 again, realizing the automatic pressing and fixing of the watertight isolation membrane.

[0023] It should be noted that, in this document, the relational terms of the first protrusion and the second protrusion are used only to distinguish one entity from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A structure for quickly replacing a watertight membrane, comprising a cylinder for containing a water medium and a watertight membrane, characterized in that: The cylinder is a hollow, thin-walled circular cylinder. An outwardly extending annular boss is provided on the outer side of the lower end of the cylinder. An annular groove is provided on the outer wall of the annular boss. The edge of the watertight isolation membrane is provided with a mating edge for embedding into the annular groove. A sliding sleeve is fitted on the outside of the cylinder. The sliding sleeve can slide along the axial direction of the cylinder. A guide post is inserted into the sliding sleeve. A compression spring is provided on the guide post.

2. The structure for quickly replacing a watertight membrane according to claim 1, characterized in that: The sliding sleeve has a first protrusion on the side near the cylinder, and the outer wall of the cylinder has a second protrusion corresponding to the first protrusion. When the sliding sleeve moves to the bottom, the first protrusion abuts against the annular boss to form a limiting fit. When the sliding sleeve moves to the top, the first protrusion contacts and aligns with the second protrusion.

3. The structure for quickly replacing a watertight membrane according to claim 1, characterized in that: The outer wall of the cylinder is welded with a bend, and the end of the guide post away from the sliding sleeve passes through the bend and extends out of the bend in the axial direction.

4. The structure for quickly replacing a watertight membrane according to claim 1, characterized in that: The cross-section of the annular groove is trapezoidal, and the trapezoidal structure includes a vertical sidewall and an inclined sidewall. The vertical sidewall is located on one side of the sliding sleeve, and the mating edge is a trapezoidal flange structure that matches the trapezoidal structure.

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