Diameter-adjustable covered stent applied to cirrhosis tips interventional therapy
By designing a diameter-adjusted coated stent in the interventional treatment of cirrhosis tips, and using annular airbags, micro pressure sensors and AI algorithms to achieve automatic regulation, the problems of complex and cost of existing balloon fine-tuning stents are solved, and the practicality and operating accuracy of the equipment are improved.
Patent Information
- Application Number
- CN202510235601.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-05-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing balloon fine-tuning stent requires a skilled intervention team to operate during use, which increases the difficulty and cost of monitoring and adjustment during and after surgery, and reduces the practicality of the equipment.
A diameter-adjustable coating stent used in interventional treatment of cirrhosis tips was designed, and a support mechanism including an annular airbag, a fixed ring, an adjustment mechanism, a positioning mechanism and a wireless signal transmitter were used to automatically adjust through a micro pressure sensor and an AI algorithm to reduce operation difficulty and improve accuracy.
Through the automatic control function, the accuracy of the inner diameter of the coating bracket and the convenience of operation are improved, the cost and difficulty of use are reduced, and the practicality of the equipment is enhanced.
Smart Images
Figure CN120022105A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of coated stents, and in particular to a coated stent with adjustable diameter used in the TIPS interventional treatment of liver cirrhosis. Background Art
[0002] There are some intravascular stents with adjustable diameters on the market. These stents are designed for situations where flexible blood flow control is required. They are mainly used for blood flow regulation, reducing the risk of complications, or achieving precise support in special anatomical positions.
[0003] In the process of implementing this application, it was found that the technology has the following problems: the existing balloon fine-tuning stent requires a skilled interventional team to operate during use, and monitoring and adjustments must be performed during and after the operation, which increases the cost and difficulty of using the subsequent balloon fine-tuning stent, thereby reducing the practicality of the device.
[0004] Therefore, we propose the diameter-adjustable covered stent used in interventional treatment of liver cirrhosis. Summary of the invention
[0005] The purpose of the present invention is to solve the problem that the present invention provides a diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis tips.
[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:
[0007] The diameter-adjustable coated stent used in interventional treatment of liver cirrhosis tips includes a coated stent, which is characterized in that: the internal positioning clamp of the coated stent is connected with a supporting mechanism for adjusting the inner diameter of the coated stent, the front of the supporting mechanism is provided with an air hole, the air hole of the supporting mechanism is installed with an adjusting mechanism, and the outer surface of the adjusting mechanism is provided with a positioning mechanism.
[0008] Furthermore, the supporting mechanism includes a fixed ring and an annular airbag, the outer surface of the annular airbag abuts against the inner wall of the coated stent, the fixed ring is installed on the inner wall of the annular airbag, and an air hole is opened on the front side of the annular airbag.
[0009] Furthermore, the material of the annular airbag is polyurethane, and the material of the fixed ring is the same as that of the coated stent, both of which are nickel-titanium alloy.
[0010] Furthermore, the regulating mechanism includes a catheter, which is installed inside the air hole of the annular airbag. A micro pressure sensor is provided on the outer surface of the catheter. A wireless signal transmitter is installed on the front of the micro pressure sensor. The output end of the micro pressure sensor and the access end of the wireless signal transmitter are electrically connected.
[0011] Furthermore, a groove is formed on the inner wall of the fixed ring, a pressure sensor is arranged inside the groove of the fixed ring, and an output end of the pressure sensor is electrically connected to an access end of the wireless signal transmitter.
[0012] Furthermore, the positioning mechanism includes a fixing block, which is slidably connected to the outer surface of the catheter, and a U-shaped clamping block is provided on the back side of the fixing block, and the inner groove of the U-shaped clamping block is clamped on the front outer end of the coated bracket.
[0013] Furthermore, the material of the conduit is a high-density corrugated tube.
[0014] Furthermore, a slot is provided on the front side of the fixed ring, a vascular ultrasound probe is arranged inside the slot of the fixed ring, and an output end of the vascular ultrasound probe is electrically connected to an access end of the wireless signal transmitter.
[0015] The beneficial effects of the present invention are as follows:
[0016] 1. The present invention changes the shape of the annular airbag by inflating and deflating the air inside the annular airbag, and then abuts the outer surface of the annular airbag against the inner wall of the coated stent, so that during the subsequent change of the shape of the annular airbag, the inner diameter of a section of the coated stent is also adjusted and changed, thereby completing the expansion of the blood vessel and regulating the flow rate of blood in the blood vessel, thereby improving the practicality of the device.
[0017] 2. The present invention activates a micro pressure sensor to monitor the pressure during the inflation and deflation process of the catheter, so that subsequent medical personnel can accurately control the width of the annular airbag, thereby improving the accuracy of subsequent medical personnel in adjusting the inner diameter of the stent by inflating and deflation of the annular airbag; the micro pressure sensor monitoring data is transmitted to the remote control terminal through a wireless signal transmitter, so that the subsequent adjustment mechanism combines the AI algorithm and blood flow feedback data to automatically control the inflation and deflation of the annular airbag to achieve the ideal inner diameter of the stent, thereby reducing the difficulty of operating the device and increasing the accuracy of the device to a certain extent, thereby improving the practicability of the device.
[0018] 3. The present invention starts the pressure sensor to perform real-time detection of the blood flow rate inside the coated stent. When the subsequent monitoring values change, the pressure sensor transmits the data to the remote control terminal through a wireless signal transmitter, and then remotely controls the catheter to release or fill and release gas into the annular airbag to adjust the inner diameter of the retracted or expanded coated stent, so that blood flow changes or stent deformation can be adjusted in time, thereby preventing damage to the blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the front structure of the present invention;
[0020] Figure 2 It is a schematic diagram of the side structure of the present invention;
[0021] Figure 3 It is a schematic diagram of the back structure of the fixed ring of the present invention;
[0022] Figure 4 is a flow chart of adjusting the inner diameter of the stent graft of the present invention;
[0023] Figure 5 This is a flow chart of the use of the vascular ultrasound probe of the present invention.
[0024] Figure numerals: 1. coated stent; 2. supporting mechanism; 201. fixing ring; 202. annular airbag; 3. adjusting mechanism; 301. catheter; 302. micro pressure sensor; 4. positioning mechanism; 401. fixing block; 402. U-shaped block; 5. wireless signal transmitter; 6. vascular ultrasound probe; 7. pressure sensor. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0028] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0029] like Figures 1 to 5 As shown, the diameter-adjustable coated stent used in interventional treatment of liver cirrhosis tips comprises a coated stent 1, an internal positioning card of the coated stent 1 is connected with a support mechanism 2 for adjusting the inner diameter of the coated stent 1, an air hole is opened on the front of the support mechanism 2, an adjustment mechanism 3 is installed inside the air hole of the support mechanism 2, and a positioning mechanism 4 is arranged on the outer surface of the adjustment mechanism 3; specifically, the inner diameter of the coated stent 1 is driven to expand and contract by manipulating the support mechanism 2 to adjust the outer contour of the mobile support mechanism 2, so that the subsequent support mechanism 2 drives the inner diameter of the blood vessel to change synchronously during the adjustment and movement process, thereby completing the expansion of the blood vessel and adjusting the flow rate of the blood volume in the blood vessel; the adjustment mechanism 3 is combined with the AI algorithm and the blood flow feedback data to automatically control the inflation and deflation of the support mechanism 2 to achieve the ideal inner diameter of the coated stent 1, thereby reducing the difficulty of operating the device and increasing the accuracy of the device to a certain extent, thereby improving the practicality of the device.
[0030] like Figures 1 to 3 As shown, the supporting mechanism 2 includes a fixed ring 201 and an annular airbag 202, the outer surface of the annular airbag 202 abuts against the inner wall of the coated stent 1, the fixed ring 201 is installed on the inner wall of the annular airbag 202, and an air hole is opened on the front of the annular airbag 202; specifically, the shape of the annular airbag 202 is changed by inflating and deflating the air inside the annular airbag 202, and then the outer surface of the annular airbag 202 abuts against the inner wall of the coated stent 1, so that in the process of the subsequent change of the shape of the annular airbag 202, a section of the inner diameter of the coated stent 1 is simultaneously driven to change, thereby completing the expansion of the blood vessel and adjusting the flow rate of blood in the blood vessel, thereby improving the practicality of the device.
[0031] like Figures 1 to 3 As shown, the material of the annular airbag 202 is polyurethane, and the material of the fixed ring 201 is the same as that of the coated stent 1, both of which are nickel-titanium alloy; specifically, the polyurethane is a biocompatible material with pressure-resistant properties, so that the subsequent annular airbag 202 can withstand multiple inflation and deflation operations without affecting its durability, thereby improving the safety of the annular airbag 202 during use; the material of the fixed ring 201 is nickel-titanium alloy to ensure the basic strength, elasticity and biocompatibility of the fixed ring 201 during use, so that the subsequent fixed ring 201 can maintain good support and flexibility during use.
[0032] like Figure 1 , Figure 2 and Figure 4As shown, the adjustment mechanism 3 includes a catheter 301, which is installed inside the air hole of the annular airbag 202. A micro pressure sensor 302 is arranged on the outer surface of the catheter 301. A wireless signal transmitter 5 is installed on the front of the micro pressure sensor 302. The output end of the micro pressure sensor 302 and the access end of the wireless signal transmitter 5 are electrically connected. Specifically, by starting the micro pressure sensor 302 to monitor the pressure of the catheter 301 during the inflation and deflation process, the subsequent medical staff can accurately control the width of the annular airbag 202, thereby improving the accuracy of the subsequent medical staff in inflating and deflation of the annular airbag 202 to adjust the inner diameter of the coated stent 1; the monitoring data of the micro pressure sensor 302 is transmitted to the remote control terminal through the wireless signal transmitter 5, so that the subsequent adjustment mechanism 3 combines the AI algorithm and the blood flow feedback data to automatically adjust the inflation and deflation of the annular airbag 202 to achieve the ideal inner diameter of the coated stent 1, thereby reducing the difficulty of operating the device and increasing the accuracy of the device to a certain extent, thereby improving the practicality of the device.
[0033] like Figure 1 and Figure 4 As shown, a groove is provided on the inner wall of the fixed ring 201, and a pressure sensor 7 is arranged inside the groove of the fixed ring 201. The output end of the pressure sensor 7 and the access end of the wireless signal transmitter 5 are electrically connected; specifically, the blood flow rate inside the coated stent 1 is detected in real time by starting the pressure sensor 7. When the subsequent monitoring values change, the pressure sensor 7 transmits the data to the remote control terminal through the wireless signal transmitter 5, and then the catheter 301 is remotely controlled to release or fill and release gas into the annular airbag 202 to adjust the inner diameter of the retracted coated stent 1, so that the blood flow changes or the deformation of the stent can be adjusted in time, thereby preventing damage to the blood vessels.
[0034] like Figure 1 and Figure 2 As shown, the positioning mechanism 4 includes a fixed block 401, which is slidably connected to the outer surface of the catheter 301, and a U-shaped block 402 is arranged on the back of the fixed block 401, and the inner groove of the U-shaped block 402 is clamped in the front outer end of the coated bracket 1; specifically, when the position of the catheter 301 is adjusted and moved, the U-shaped block 402 is driven to move by pushing the fixed block 401, and the U-shaped block 402 is clamped and positioned to the front outer end of the coated bracket 1, so that the subsequent positioning mechanism 4 limits the position and length of the catheter 301 inside the coated bracket 1, thereby avoiding as much as possible that the catheter 301 pulls the supporting mechanism 2 to move during the subsequent use of the coated bracket 1, thereby improving the stability of the subsequent adjustment mechanism 3 during use.
[0035] like Figure 1 and Figure 2As shown, the material of the catheter 301 is a high-density corrugated tube; specifically, the high-density corrugated tube has the characteristic of bending but not twisting, so that the subsequent catheter 301 is not easy to swing when pushing the support mechanism 2 to move inside the coated stent 1, thereby ensuring the stability of the subsequent staff when pushing the catheter 301 to move inside the coated stent 1.
[0036] like Figure 3 and Figure 5 As shown, a slot is provided on the front of the fixed ring 201, and a vascular ultrasound probe 6 is arranged inside the slot of the fixed ring 201, and an output end of the vascular ultrasound probe 6 and an access end of the wireless signal transmitter 5 are electrically connected; specifically, the vascular ultrasound probe 6 is started to detect the interior of the blood vessel at the outer end of the coated stent 1 in real time, and then the output end of the vascular ultrasound probe 6 and the access end of the wireless signal transmitter 5 are electrically connected, so that the subsequent vascular ultrasound probe 6 transmits the real-time image of the interior of the blood vessel to the remote control terminal through the wireless signal transmitter 5, and then the subsequent remote control terminal calculates the moving path of the coated stent 1 inside the blood vessel, thereby shortening the time spent by subsequent medical personnel in adjusting the position of the mobile coated stent 1, and improving the safety of subsequent staff in the process of pushing the coated stent 1 to move inside the blood vessel.
[0037] In summary: the shape of the annular airbag 202 is changed by inflating and deflating the annular airbag 202, and the outer surface of the annular airbag 202 is abutted against the inner wall of the coated stent 1, so that the inner diameter of a section of the coated stent 1 is adjusted and changed synchronously during the subsequent change of the shape of the annular airbag 202, thereby completing the expansion of the blood vessel and adjusting the flow rate of blood in the blood vessel; by starting the micro pressure sensor 302 to monitor the pressure of the catheter 301 during the inflation and deflation process, the subsequent medical personnel can accurately control the width of the annular airbag 202, thereby improving the accuracy of the subsequent medical personnel in inflating and deflating the annular airbag 202 to adjust the inner diameter of the coated stent 1; the monitoring data of the micro pressure sensor 302 is transmitted to the remote control terminal through the wireless signal transmitter 5, so that the subsequent adjustment mechanism 3 combines the AI algorithm and the blood flow feedback data to automatically adjust the inflation and deflation of the annular airbag 202 to achieve the ideal inner diameter of the coated stent 1, thereby reducing the difficulty of operating the device and increasing the accuracy of the device to a certain extent.
[0038] At the same time, by starting the pressure sensor 7, the blood flow rate inside the coated stent 1 is detected in real time. When the subsequent monitoring value changes, the pressure sensor 7 transmits the data to the remote control terminal through the wireless signal transmitter 5, and then remotely controls the catheter 301 to release or fill and release gas into the annular airbag 202 to adjust the inner diameter of the coated stent 1, so that blood flow changes or stent deformation can be adjusted in time to prevent damage to the blood vessel; by pushing the fixed block 401 to drive the U-shaped block 402 to move, the U-shaped block 402 is clamped and positioned to the front outer end of the coated stent 1, so that the subsequent positioning mechanism 4 limits the position and length of the catheter 301 inside the coated stent 1, thereby minimizing the inner diameter of the coated stent 1 caused by the catheter 301 pulling the supporting mechanism 2 to move during the subsequent use of the coated stent 1.
[0039] In addition, by starting the vascular ultrasound probe 6 to perform real-time detection on the interior of the blood vessel at the outer end of the coated stent 1, and then electrically connecting the output end of the vascular ultrasound probe 6 and the access end of the wireless signal transmitter 5, the vascular ultrasound probe 6 can subsequently transmit the real-time image of the interior of the blood vessel to the remote control terminal through the wireless signal transmitter 5, and then the subsequent remote control terminal can calculate the moving path of the coated stent 1 inside the blood vessel, thereby shortening the time spent by subsequent medical personnel in adjusting the position of the mobile coated stent 1.
[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A diameter-adjustable covered stent for use in interventional treatment of liver cirrhosis, comprising a covered stent (1), characterized in that: The internal positioning clamp of the coated stent (1) is connected with a support mechanism (2) for adjusting the inner diameter of the coated stent (1), the front of the support mechanism (2) is provided with an air hole, an adjustment mechanism (3) is installed inside the air hole of the support mechanism (2), and the outer surface of the adjustment mechanism (3) is provided with a positioning mechanism (4).
2. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 1, characterized in that: The supporting mechanism (2) comprises a fixed ring (201) and an annular airbag (202), the outer surface of the annular airbag (202) abuts against the inner wall of the coated support (1), the fixed ring (201) is installed on the inner wall of the annular airbag (202), and an air hole is opened on the front side of the annular airbag (202).
3. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 2, characterized in that: The material of the annular airbag (202) is polyurethane, and the material of the fixing ring (201) is the same as that of the stent graft (1), both being nickel-titanium alloy.
4. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 2, characterized in that: The regulating mechanism (3) comprises a catheter (301), the catheter (301) being installed inside the air hole of the annular airbag (202), a micro pressure sensor (302) being provided on the outer surface of the catheter (301), a wireless signal transmitter (5) being installed on the front of the micro pressure sensor (302), and an output end of the micro pressure sensor (302) and an access end of the wireless signal transmitter (5) being electrically connected.
5. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 4, characterized in that: The inner wall of the fixed circular ring (201) is provided with a groove, a pressure sensor (7) is arranged inside the groove of the fixed circular ring (201), and an output end of the pressure sensor (7) and an access end of the wireless signal transmitter (5) are electrically connected.
6. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 4, characterized in that: The positioning mechanism (4) comprises a fixing block (401), wherein the fixing block (401) is slidably connected to the outer surface of the catheter (301), and a U-shaped clamping block (402) is arranged on the back side of the fixing block (401), and the inner groove of the U-shaped clamping block (402) is clamped on the front outer end of the coated support (1).
7. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 4, characterized in that: The material of the conduit (301) is a high-density corrugated tube.
8. The diameter-adjustable covered stent used in the interventional treatment of liver cirrhosis according to claim 4, characterized in that: A slot is provided on the front of the fixed circular ring (201), a vascular ultrasound probe (6) is arranged inside the slot of the fixed circular ring (201), and an output end of the vascular ultrasound probe (6) and an access end of the wireless signal transmitter (5) are electrically connected.