CN223585988U - A sealing device - Google Patents

Abstract

This application discloses a sealing device, relating to the field of medical device technology. The sealing device includes a sealing body for extending along the ureter. The sealing body is equipped with a deformable wire made of shape memory alloy. This deformable wire can deform upon heating to form a sealing structure, thereby sealing the stone in the ureter on the side deviating towards the kidney. This sealing device, by using a deformable wire made of shape memory alloy, can automatically deform upon heating to form a sealing structure, effectively solving the problems of complex structure, difficult operation, and easy damage to the ureteral wall in existing sealing devices. It achieves a simple, reliable, and safe sealing effect, improving the safety and efficiency of the procedure.

Description

Plugging device

Technical Field

The application relates to the technical field of medical instruments, in particular to a plugging device.

Background

In urinary lithotripsy, it is often necessary to pass circulating water through an endoscope into the ureter to assist in the evacuation of lithotripsy particles in order to effectively evacuate the lithotripsy particles. However, there are certain limitations to this manner of operation. Due to the complex structure of the ureter, the ureter is bent and may have a narrow part, fine broken stone particles in the broken stone process may enter deep into the renal calyx along with water flow, so that the ureter is difficult to completely remove, and even further damage may be caused to a patient.

Although the existing plugging device can prevent drifting of stones and broken stones to a certain extent, the existing plugging device has obvious defects. For example, the structure of existing occlusion devices is complex, requiring precise control during the procedure, which increases the difficulty and time costs of the procedure. In addition, the complex structural design may cause unsmooth movement of the device in the ureter, especially in the bending and narrow parts of the ureter, and damage to the ureter wall is easy to cause, so that the safety and effectiveness of the operation are affected.

Disclosure of utility model

The application aims to provide a plugging device, which can automatically deform to form a plugging structure when the temperature rises by adopting a deformation wire made of memory alloy, so that the problems of complex structure, high operation difficulty and easiness in damaging the ureter wall of the existing plugging device are effectively solved, a simple, reliable and safe plugging effect is realized, and the safety and the efficiency of an operation are improved.

In order to achieve the above object, the present application provides a plugging device, comprising a plugging main body for extending along a ureter, wherein the plugging main body is provided with a deformation wire made of a memory alloy, and the deformation wire can be deformed to form a plugging structure when the temperature is raised, so that a stone in the ureter is plugged to one side of a kidney.

In some embodiments, the deformation wire is in a straight line shape before temperature rise, and the plugging structure is in a funnel shape after temperature rise.

In some embodiments, the funnel shape has a first end and a second end, the first end having a smaller diameter dimension than the second end, the first end disposed facing the kidney, and the second end disposed facing the stone.

In some embodiments, the occlusion device further comprises an elastic wire wrap wrapped around the occlusion body.

In some embodiments, the occlusion body comprises a first tube and a second tube;

The first pipe fitting, the deformation wire and the second pipe fitting are sequentially connected.

In some embodiments, the elastic wire wrap is wrapped around the first tube member and the second tube member.

In some embodiments, the first tube, the textured yarn, and the second tube are of an integrally molded design.

In some embodiments, the first tube has a first end and a second end, the second end of the first tube is connected to the textured yarn, and the tube diameter of the first tube increases from the first end to the second end;

The second pipe fitting is provided with a first end and a second end, the first end of the second pipe fitting is connected with the deformation wire, and the pipe diameter size of the second pipe fitting is unchanged from the first end to the second end.

In some embodiments, the occluding body is made of nickel titanium memory alloy.

In some embodiments, the occlusion device further comprises an elastic membrane that is wrapped around the textured yarn.

Compared with the background art, the plugging device mainly comprises a plugging main body which is used for extending into along a ureter, wherein the plugging main body is provided with a deformation wire made of memory alloy, and the deformation wire can be deformed to form a plugging structure when the temperature is raised, so that stones in the ureter are plugged to one side of a kidney.

In urological lithotripsy operation, the existing plugging device has a plurality of defects, such as complex structure, high operation difficulty, easy damage to ureter wall and the like. In order to solve the problems, the application provides an innovative plugging device, which is characterized in that a deformation wire made of memory alloy is adopted, and the deformation wire can automatically deform under specific temperature conditions to form an effective plugging structure.

In particular, the blocking device mainly comprises a blocking main body which is used for extending along the ureter, and the key innovation point is that a deformation wire is arranged on the blocking main body. These textured wires are made of memory alloys with unique shape memory properties. At low temperature (e.g., room temperature), the textured yarn maintains a straight shape, facilitating smooth insertion of the device into the ureter through a ureteroscope or catheter. When the device reaches a predetermined position, the deformed wire automatically responds and changes shape by changing temperature, including but not limited to body temperature changes, hot water injection, etc., to finally form a round, funnel or other suitable occlusion structure having a larger diameter than the wire diameter of the original deformed wire. The structure can jointly obstruct the circulation of stones together with the inner wall of the ureter, particularly effectively block the circulation of stones which are deflected to one side of the kidney, and prevent stone breaking particles from entering the deep part of the kidney.

The design is ingenious in that the shape memory effect of the memory alloy is utilized, and the defect that the traditional plugging device needs a complex mechanical structure or manual operation to realize plugging is avoided. The automatic deformation capability of the memory alloy not only simplifies the structure of the device, but also reduces the complexity of operation and reduces the damage risk to the ureter wall caused by improper operation. Meanwhile, as the deformation wire can be automatically unfolded at the body temperature, the plugging device can be better adapted to the structural differences of different patient ureters, and the safety and reliability of the operation are improved.

By combining the structure and the process description, the plugging device has the advantages that the plugging device at least has the following beneficial effects that the plugging structure can be formed by automatic deformation when the temperature is raised through the deformation wire made of the memory alloy, the problems that the structure of the existing plugging device is complex, the operation difficulty is high and the damage to the ureter wall is easy to occur are effectively solved, the simple, reliable and safe plugging effect is realized, and the safety and the efficiency of the operation are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of an occlusion device according to an embodiment of the present application;

fig. 2 is a schematic view of a plugging structure according to an embodiment of the present application;

Fig. 3 is a diagram of the location of a stone in a ureter;

FIG. 4 is an effect diagram of endoscope probe lithotripsy;

fig. 5 is a diagram showing the position of an occlusion device in a ureter according to an embodiment of the present application;

FIG. 6 is a schematic illustration of a first tube and elastic wire wrap provided in accordance with an embodiment of the present application;

fig. 7 is a schematic view of a second tube and elastic wire wrap provided in an embodiment of the present application.

Wherein:

A plugging device 100,

A plugging main body 1, a deformation wire 11, a first pipe fitting 12, a second pipe fitting 13, a plugging structure 101,

Elastic wire winding 2, welding point 21,

Ureter 01, stone 02, kidney 03, bladder 04, endoscopic probe 05.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.

Please refer to fig. 1 to 5, wherein fig. 1 is a schematic diagram of an occlusion device provided by an embodiment of the present application, fig. 2 is a schematic diagram of an occlusion structure provided by an embodiment of the present application, fig. 3 is a position diagram of stones in a ureter, fig. 4 is an effect diagram of stones of an endoscope probe, and fig. 5 is a position diagram of an occlusion device provided by an embodiment of the present application in a ureter.

In a first specific embodiment, the plugging device 100 provided by the embodiment of the application mainly comprises a plugging main body 1 for extending along a ureter 01, wherein the plugging main body 1 is provided with a deformation wire 11 made of a memory alloy, and the deformation wire 11 can be deformed to form a plugging structure 101 when the temperature is raised, so that a calculus 02 in the ureter 01 is plugged to one side of a kidney 03.

In urological lithotripsy operation, the existing plugging device has a plurality of defects, such as complex structure, high operation difficulty, easy damage to ureter wall and the like. In view of these problems, the present application provides an innovative plugging device 100, which is characterized in that a deformation wire 11 made of a memory alloy is adopted, and the deformation wire 11 can be automatically deformed under a specific temperature condition to form an effective plugging structure 101.

In particular, the occlusion device 100 mainly comprises an occlusion body 1 for extending along the ureter 01, the key innovation being the presence of a deformation wire 11 arranged on the occlusion body 1. These deformation wires 11 are made of a memory alloy and have unique shape memory characteristics. At low temperature (e.g., room temperature), the deformation wire 11 maintains a straight shape, facilitating smooth insertion of the device into the ureter 01 through a ureteroscope or catheter. When the device reaches a predetermined position, the textured yarn 11 automatically responds and changes shape by changing temperature, including but not limited to body temperature changes, hot water injection, etc., to eventually form a bolus, funnel, or other suitable occlusion 101 having a larger diameter than the original textured yarn 11. The structure can jointly obstruct the circulation of the calculus 02 with the inner wall of the ureter 01, particularly effectively block the circulation of the calculus 02 deviated to one side of the kidney 03 and prevent the lithotripsy particles from entering the deep part of the kidney.

The design is ingenious in that the shape memory effect of the memory alloy is utilized, and the defect that the traditional plugging device needs a complex mechanical structure or manual operation to realize plugging is avoided. The automatic deformation capability of the memory alloy not only simplifies the structure of the device, but also reduces the complexity of operation and reduces the damage risk to the wall of the ureter 01 caused by improper operation. Meanwhile, as the deformation wire 11 can be automatically unfolded at the body temperature, the plugging device 100 can be better suitable for the structural differences of different patient ureters 01, and the safety and reliability of the operation are improved.

By combining the structure and the process description, the plugging device 100 has the advantages that the plugging device 100 at least has the following beneficial effects that the plugging structure 101 can be formed by automatic deformation when the temperature rises through the deformation wire 11 made of the memory alloy, the problems that the existing plugging device is complex in structure, high in operation difficulty and easy to damage the wall of the ureter 01 are effectively solved, the simple, reliable and safe plugging effect is realized, and the safety and the efficiency of an operation are improved.

It should be noted that the change of the deformation wire 11 to the plugging structure 101 is an assembly in which the wire-shaped deformation wire 11 is integrally deformed. The purpose of this variation is to create an effective occlusion structure 101 within the ureter 01 to block the flow of stones 02, and in particular to prevent the flow of stones 02 to the side of the kidneys 03. The specific shape of the deformed wire 11 is not limited in this embodiment, and is within the allowable range of this embodiment as long as the overall structure is changed from the original wire structure and the plugging function can be achieved. Therefore, the application is not limited by the shape of a ball, a sphere, an umbrella or any other shape capable of realizing the plugging function.

In some embodiments, the deformation wire 11 is in a straight shape before temperature rise, and the plugging structure 101 is in a funnel shape after temperature rise.

In this embodiment, the design of the textured yarn 11 has a unique temperature response characteristic, and the shape change under different temperature conditions is a key mechanism for realizing the plugging function. In particular, the shape-changing wire 11 maintains a straight shape at a low temperature (e.g., room temperature), and this design facilitates smooth insertion of the occluding device 100 into the ureter 01 through a ureteroscope or catheter, ensuring ease and flexibility of operation of the device during implantation. The linear deformation wire 11 has higher stability and flexibility at low temperature, can adapt to the structure of the ureter 01, and reduces the damage risk to the ureter wall.

When the occluding device 100 reaches a predetermined position, the shape of the textured yarn 11 begins to change as the temperature increases (e.g., by body temperature or injection of hot water, etc.). Eventually, the textured yarn 11 will form a funnel-shaped occluding structure 101. The funnel-shaped design has important functional significance. The funnel-shaped blocking structure 101 can be tightly attached to the inner wall of the ureter 01 to form an effective blocking barrier, thereby blocking the circulation of the calculus 02, and particularly preventing the circulation of the calculus 02 towards the kidney 03 side. Such a change in shape not only improves the reliability of the occlusion effect, but also better accommodates the structural differences of the different patient ureters 01, enhancing the versatility and applicability of the occlusion device 100.

As shown in fig. 2, the occluding structure 101 is formed by deforming a textured yarn 11 by spiraling. The deformation wire 11 is made of memory alloy, has unique shape memory property and can automatically change shape under specific temperature conditions. In a low temperature state, the deformation wire 11 maintains a straight shape, so that the plugging device 100 can be easily inserted into the ureter 01. When the temperature increases, the textured yarn 11 gradually spirals and winds according to a preset shape memory program, and finally forms the plugging structure 101 with a certain shape and structure.

This process of coil formation is one manifestation of the memory alloy properties. During the heating up of the textured yarn 11, the microstructure inside it changes, resulting in a macroscopic shape change. Specifically, the textured yarn 11 is gradually curved from a straight state and spirals to form a similar shape as a cluster, umbrella, or other suitable shape. These shape changes enable the deformation wire 11 to closely fit the inner wall of the ureter 01, thereby achieving an effective occlusion function. The process of forming the occluding structure 101 is continuous and controllable, ensuring the reliability and safety of the occluding device 100 during surgery.

By the spiral deformation of the deformation wire 11, the blocking structure 101 not only can effectively block the calculus 02 in the ureter 01, but also can adapt to anatomical structure differences of different patient ureters 01. The design fully utilizes the shape memory effect of the memory alloy, avoids the defect that the traditional plugging device needs a complex mechanical structure or manual operation to realize plugging, simplifies the operation flow, reduces the operation risk and improves the safety and efficiency of the operation.

In some embodiments, the funnel shape has a first end and a second end, the first end having a smaller diameter dimension than the second end, the first end being disposed facing the kidney 03 and the second end being disposed facing the stone 02.

In this embodiment, the funnel shape formed by the plugging structure 101 has well-defined structural features and functional layouts. The funnel-shaped occluding structure 101 has two ends, a first end and a second end. Wherein the first end has a smaller diameter dimension and the second end has a larger diameter dimension. The design is such that the funnel-shaped open end (second end) faces the stone 02, while the narrower end (first end) faces the kidney 03.

This structural arrangement has important functional significance. The larger diameter of the second end can effectively cover the area where the stone 02 is located, forming a wide blocking surface, thereby preventing the stone particles from flowing to the kidney 03 side during the stone breaking operation. Due to the fact that the diameter of the second end portion is larger, the inner wall shape of the ureter 01 can be well adapted to, close fitting between the blocking structure 101 and the ureter wall is guaranteed, and therefore reliability and stability of blocking effect are improved.

At the same time, the smaller diameter of the first end is facing the kidney 03, which design helps to reduce pressure and damage to the inner wall of the ureter 01. Through the ingenious structural design, the plugging device 100 can effectively prevent stone 02 fragments from entering the kidney 03, reduce the risk of damage to the wall of the ureter 01 to the maximum extent, and improve the safety and efficiency of the operation.

Referring to fig. 6 and 7, fig. 6 is a schematic view of a first tube and an elastic filament according to an embodiment of the present application, and fig. 7 is a schematic view of a second tube and an elastic filament according to an embodiment of the present application.

In some embodiments, the occluding device 100 further comprises an elastic wire wrap 2, the elastic wire wrap 2 being wrapped around the occluding body 1.

In this embodiment, the design of the occluding device 100 includes not only the textured yarn 11 made of memory alloy, but also the introduction of the elastic wrap yarn 2. The elastic wire wrap 2 is wrapped around the occluding body 1 and serves primarily to increase the overall strength and stability of the occluding device 100. By winding the elastic wire 2 around the occluding body 1, the durability and reliability of the device during surgery can be effectively improved, ensuring that the occluding structure 101 can withstand certain pressures and tensions during formation and use.

The location of the elastic wire wrap 2 is not particularly limited in this embodiment, meaning that it can be flexibly wrapped around any portion of the occluding body 1 to meet different design and functional requirements. This flexibility of design provides more possibilities for optimization of the occluding device 100 while also enabling the device to better accommodate different surgical scenarios and patient anatomy differences. By adding the elastic wire wrap 2, the occluding device 100 further improves its stability and safety under complex surgical conditions while achieving an effective occlusion function.

Alternatively, the elastic wire 2 is made of stainless steel and wound around the outside of the occluding body 1 in a spring-like structure.

In some cases, a weld 21 is provided at the end of the elastic wire 2, and the elastic wire 2 is fixed to the occluding body 1 in a welded manner. More specifically, weld 21 is located at a first end of first tube 12.

In some embodiments, the occluding body 1 comprises a first tube member 12 and a second tube member 13, wherein the first tube member 12, the textured yarn 11 and the second tube member 13 are connected in sequence.

In this embodiment, the plugging main body 1 is formed by sequentially connecting a first pipe fitting 12, a deformation wire 11 and a second pipe fitting 13, so as to form an integral structure. The first pipe 12 may be regarded as an upper section of the plugging body 1, the deformation wire 11 is a middle section, and the second pipe 13 is a lower section. This segmented design allows the occluding device 100 to better accommodate the needs of a surgical procedure during use.

Specifically, the first tube 12 is a portion to be inserted into the ureter 01 first as the upper section of the occlusion body 1. Its design and dimensions allow the occlusion device 100 to smoothly enter the ureter 01 and guide the subsequent deformation wire 11 and the second tube 13 into a predetermined position. The front end of the first tube member 12 is typically of a smaller diameter to facilitate smooth insertion into the ureter 01 via a ureteroscope or catheter, reducing trauma to the ureteral wall.

The textured yarn 11 serves as a central portion of the occluding body 1 and is a core portion of the occluding device 100. It is made of memory alloy, and can be automatically deformed when the temperature is raised to form the plugging structure 101. The shape memory of the deformation wire 11 keeps a straight line shape in a low temperature state, so that the deformation wire is convenient to be inserted into the ureter 01, and the deformation wire is automatically unfolded at the body temperature or other preset temperature, so that an effective blocking structure is formed.

The second pipe fitting 13 serves as a lower section of the plugging main body 1, and serves to connect external equipment and control the entry of the plugging main body 1. It is typically associated with a ureteroscope or other surgical instrument, providing an interface for the physician to operate. The second tube member 13 is designed and dimensioned to be able to stably connect to external equipment and provide the necessary support and control functions during surgery. By means of the second tube member 13, the physician can precisely control the insertion depth and position of the occluding device 100, ensuring that the occluding structure 101 can be accurately deployed at a predetermined position.

This segmented design not only enhances the flexibility and adaptability of the occluding device 100, but also enhances its ease and reliability of operation during surgery. By the sequential connection of the first tube member 12, the deformation wire 11 and the second tube member 13, the occlusion device 100 is better able to adapt to ureteral anatomy of different patients while ensuring the safety and effectiveness of the procedure.

In some embodiments, the elastic wire wrap 2 is wrapped around the first tube member 12 and the second tube member 13.

In the present embodiment, the purpose of this design is to further enhance the overall structural strength and stability of the occluding body 1, ensuring reliability and durability of the occluding device 100 during surgical procedures.

Specifically, the elastic wire 2 is tightly combined with the first tube member 12 and the second tube member 13 by winding. The winding structure not only can provide additional mechanical support, but also can enhance the deformation resistance of the plugging main body 1 under the stress. Since the first tube member 12 and the second tube member 13 serve as the upper and lower sections of the occluding body 1, respectively, they are subjected to various forces during the operation, including frictional force at the time of insertion and tensile force at the time of operation. The winding of the elastic wire 2 can uniformly disperse these forces, preventing damage caused by local stress concentration.

In addition, the elastic properties of the elastic wire winding 2 also provide a certain flexibility, so that the occluding body 1 can better adapt to the anatomy of the ureter 01 during operation. This flexibility helps to reduce damage to the ureteral wall while ensuring flexibility and ease of operation of the occluding device 100 during surgery.

In some embodiments, the first tube 12, the textured yarn 11, and the second tube 13 are of an integrally formed design.

In this embodiment, the first tube member 12, the deformation wire 11 and the second tube member 13 are integrally formed, that is, are integrally made of a memory alloy. This design not only ensures uniformity in the material properties of the occluding device 100, but also improves the strength and reliability of the overall structure by eliminating the connection points between the different components. The integrated structure enables the plugging main body 1 to better adapt to the anatomical structure of the ureter in the operation process, reduces the damage risk possibly caused by stress concentration at the joint, and improves the safety and efficiency of the operation.

Although the first pipe fitting 12, the deformation wire 11 and the second pipe fitting 13 are made of memory alloy materials, the deformation wire 11 is specially treated and has the capability of automatically deforming under the specific temperature condition. This feature allows the deformation wire 11 to be deformed from a straight shape to a blocking structure 101, such as a funnel or other suitable shape, at body temperature or other preset temperature to effect blocking of stones in the ureter. The first tube member 12 and the second tube member 13 mainly play a role in supporting and connecting, so as to ensure the stability and the operation convenience of the plugging device 100 in the operation process. The first tube 12 serves as an upper section of the occlusion body 1 for smooth insertion of the guide device into the ureter, and the second tube 13 serves as a lower section for connection with external devices and for providing an operation interface, so that a doctor can precisely control the insertion depth and position of the occlusion device 100.

In some embodiments, the first tube member 12 has a first end and a second end, the second end of the first tube member 12 is connected to the deformation wire 11, the tube diameter of the first tube member 12 increases from the first end to the second end, the second tube member 13 has a first end and a second end, the first end of the second tube member 13 is connected to the deformation wire 11, and the tube diameter of the second tube member 13 does not change from the first end to the second end.

In this embodiment, the first tube member 12 and the second tube member 13 are designed with unique structural features to meet different requirements of the occluding device 100 during a surgical procedure. Specifically, the first pipe member 12 has a first end portion and a second end portion, and the pipe diameter thereof gradually increases in size from the first end portion to the second end portion. The diameter-changing design ensures that the front end of the first pipe fitting 12 has a smaller diameter, so that the device can smoothly enter the ureter 01, and friction and damage to the wall of the ureter are reduced. With the gradual increase of the pipe diameter, the second end of the first pipe fitting 12 is connected with the deformation wire 11, and the design not only provides enough supporting force, but also ensures that the deformation wire 11 can be smoothly unfolded when the temperature rises, so that an effective plugging structure 101 is formed.

At the same time, the second tube member 13 also has a first end and a second end, the tube diameter dimension of which remains unchanged from the first end to the second end. This constant diameter design provides the second tube member 13 with high structural strength and stability and is capable of withstanding various forces that may be generated during surgery, including frictional forces during insertion and tensile forces during operation. The first end of the second tube member 13 is connected to the deformation wire 11 in such a way that not only the integrity of the occlusion device 100 is ensured, but also the second tube member 13 is able to effectively transmit the operation instructions of the external device, ensuring an accurate control of the occlusion device 100 during the operation.

The design is ingenious in that the first pipe fitting 12 at the upper section adopts a variable diameter structure, so that the device can smoothly enter the ureter 01, and the second pipe fitting 13 at the lower section adopts an equal diameter structure, so that the strength and the stability of the device in the operation process are ensured. By such a segmented design, the occluding device 100 is not only better able to adapt to the anatomy of the ureter 01, but also provides reliable support and control during the procedure, thereby improving the safety and efficiency of the procedure. This structural design not only optimizes the performance of the occluding device 100, but also provides greater convenience and reliability for the surgical procedure.

In some embodiments, the occluding body 1 is made of nickel titanium memory alloy.

In this embodiment, the nickel-titanium memory alloy is a material with unique shape memory properties that automatically returns to a predetermined shape under specific temperature conditions. This choice of material provides a critical functional basis for the occluding device 100 to be able to perform an effective occluding function during surgery.

Specifically, the shape memory effect of the nitinol alloy enables the deformation wire 11 to automatically deform upon heating up, forming the occluding structure 101. This feature not only simplifies the operation of the occluding device 100, but also improves the safety and efficiency of the procedure. The automatic deformability of the nickel-titanium memory alloy reduces the dependence on manual operation and reduces the risk of damage to the ureter wall caused by improper operation.

In addition, the nickel-titanium memory alloy also has good biocompatibility and durability. Such materials are widely used in the medical field and ensure the safety and reliability of the occluding device 100 within the human body. The high strength and superelastic properties of the nitinol allow the occluding body 1 to withstand certain compressive and tensile forces during surgery, ensuring stability and effectiveness of the occluding structure 101.

The plugging main body 1 made of the nickel-titanium memory alloy not only has the shape memory effect, but also provides powerful guarantee for the overall performance of the plugging device 100 through the biocompatibility and mechanical properties of materials. This choice of material allows the occluding device 100 to better accommodate surgical needs, ensure safety and effectiveness of the procedure, and provide a more reliable treatment regimen for the patient.

In some embodiments, the occluding device 100 further comprises an elastic membrane that is wrapped around the textured yarn 11.

In this embodiment, the introduction of the elastic membrane provides the occluding device 100 with additional functional characteristics, particularly the elastic membrane is capable of maintaining a stable state before and after deformation of the deformation filaments 11, ensuring reliability of the occluding structure 101 during formation and use.

Specifically, the elastic properties of the elastic membrane enable it to closely conform to the surface of the textured yarn 11 during the process of deforming the textured yarn 11 from a straight shape to the occluding structure 101. This close fit not only ensures the integrity of the occluding structure 101, but also provides a layer of protection to the surface of the occluding structure 101. The protective surface can effectively reduce friction between the blocking structure 101 and the ureter wall, reduce the risk of injury to the ureter wall, and simultaneously is favorable for the blocking structure 101 to better adapt to the anatomical structure of the ureter.

In addition, the elastic film may further provide hydrophilic surface characteristics. The hydrophilic surface can spread liquid (e.g., body fluid, physiological saline) on the surface of the occluding structure 101, further reducing friction between the occluding structure 101 and the ureter wall, and also enhancing the biocompatibility of the occluding structure 101. This hydrophilic nature not only aids in the smooth operation of the occluding device 100 during surgery, but also reduces patient discomfort due to foreign body sensation.

By virtue of the protective and hydrophilic nature of the elastic membrane, the occluding device 100 is capable of more safely and effectively performing an occluding function during a surgical procedure. The introduction of the elastic membrane not only improves the reliability of the occluding device 100, but also enhances its ease of handling and patient comfort during surgery. The design ensures that the plugging device 100 can realize effective plugging, simultaneously reduces the damage to the ureter wall to the greatest extent and improves the safety and the efficiency of the operation.

As shown in fig. 3, stones 02 in ureter 01 tend to be located in the stenosed region of ureter 01.

As shown in fig. 4, in clinic, laser fibers loaded on an endoscope probe 05 are often used for lithotripsy, normal saline is continuously introduced to impact the lithotripsy, and the lithotripsy possibly impacts the kidney 03 along with water flow.

As shown in fig. 5, the present application provides a plugging device 100 for plugging the lithotripsy device 100 over the stone 02 in advance of laser lithotripsy to ensure that smaller lithotripsy does not flow into the kidney 03, in response to the problem that the lithotripsy may impact the kidney 03 with water flow.

Illustratively, the plugging device 100 in the state of fig. 1 is placed above the calculus 02 under the guidance of ultrasound at normal temperature, hot water of 45+/-5 ℃ is injected before the calculus is broken, the temperature of 40 ℃ is the temperature at which the memory alloy starts to deform, the temperature of 50 ℃ is the temperature at which the deformation is finished, and after about 2mL of hot water is introduced, the plugging device 100 can be deformed in 2 seconds to form a compact plugging structure 101 as shown in fig. 2, so that the calculus 02 is prevented from entering deep into the renal calyx. When the crushed stone is taken out, cold water at about 5 ℃ can be introduced, so that the compression force after deformation is reduced, and the crushed stone can be taken out of the body under the pulling of the foreign matter forceps.

It should be noted that many of the components mentioned in the present application are common standard components or components known to those skilled in the art, and the structure and principle thereof can be known by those skilled in the art through technical manuals or through routine experimental methods.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The plugging device provided by the application is described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims (10)

1. A blocking device, characterized in that it includes a blocking body for extending along the ureter, the blocking body having a deformable wire made of shape memory alloy, the deformable wire being able to deform into a blocking structure when heated, thereby blocking the stone in the ureter on the side deviating towards the kidney. 2. The sealing device according to claim 1, wherein the deformable wire is in a straight shape before heating, and the sealing structure is in a funnel shape after heating. 3. The occlusion device according to claim 2, characterized in that the funnel shape has a first end and a second end, the diameter of the first end is smaller than the diameter of the second end, the first end faces the kidney, and the second end faces the stone. 4. The sealing device according to claim 1, characterized in that it further includes an elastic winding wire, the elastic winding wire being wound around the sealing body. 5. The sealing device according to claim 4, wherein the sealing body comprises a first pipe fitting and a second pipe fitting; The first pipe fitting, the deformable wire, and the second pipe fitting are connected in sequence. 6. The sealing device according to claim 5, wherein the elastic wire is wound around the first pipe and the second pipe. 7. The sealing device according to claim 5, wherein the first tube, the deformable wire and the second tube are integrally molded. 8. The sealing device according to claim 5, characterized in that the first pipe has a first end and a second end, the second end of the first pipe is connected to the deformable wire, and the pipe diameter of the first pipe increases from the first end to the second end; The second pipe fitting has a first end and a second end. The first end of the second pipe fitting is connected to the deformable wire. The pipe diameter of the second pipe fitting remains unchanged from the first end to the second end. 9. The sealing device according to claim 7, wherein the sealing body is made of nickel-titanium shape memory alloy. 10. The sealing device according to claim 1, characterized in that it further comprises an elastic membrane, the elastic membrane covering the deformable filament.