Vascular bridge protection device

By designing a vascular bridge protection device to limit and support the patient's legs, and combining it with a pulsation monitoring component, the problem of vascular bridges being susceptible to external forces after surgery was solved, enabling real-time monitoring and improving comfort, while reducing the risk of flap ischemia.

CN121845828APending Publication Date: 2026-04-14THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
Filing Date
2026-02-24
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

In existing technologies, vascular grafts are susceptible to external pressure, traction, and gravity during postoperative care, leading to lower limb discomfort. Furthermore, the inability to monitor vascular pulsation in real time increases the risk of flap ischemia and necrosis.

Method used

Design a vascular bridge protection device that includes a main protective shield and a secondary protective shield. By limiting and supporting the patient's legs, and combining it with a pulsation monitoring component to achieve real-time monitoring, the device reduces the risk of vascular bridge traction and facilitates the observation of vascular pulsation.

Benefits of technology

It effectively reduces the risk of vascular graft traction and injury, improves patient comfort, enables data-driven and visual monitoring of vascular pulsation, timely detection of abnormalities, and ensures the stability of flap blood supply.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121845828A_ABST
    Figure CN121845828A_ABST
Patent Text Reader

Abstract

The invention discloses a vascular bridge protection device, and particularly relates to the technical field of vascular bridge protection.The vascular bridge protection device comprises a main protection cover and an auxiliary protection cover, the main protection cover comprises an adjustable cover shell, two sets of adjustable supporting legs are arranged at the bottom of the adjustable cover shell and used for supporting and protecting the lower limbs of a patient, and the adjustable cover shell comprises an outer cover shell and an inner cover shell; the outer cover shell and the inner cover shell are connected in a sliding mode so that the width of the main protection cover can be adjusted, an adjustable cover cap convenient to open and close is arranged on the top of the adjustable cover shell so that the interior of the adjustable cover shell can be observed conveniently, and a pulsation monitoring assembly is arranged in the adjustable cover shell and used for monitoring pulsation of the vascular bridge in real time. By covering the two legs of a patient and the outside of the vascular bridge, the device limits and supports the two legs, the traction risk of the vascular bridge is reduced, the discomfort of the patient due to suspension of the lower limbs is relieved, meanwhile, pulsation datamation and visualization of the vascular bridge can be achieved, and medical staff can conveniently judge the flap blood supply condition in time.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of vascular bridge protection technology, and more specifically to a vascular bridge protection device. Background Technology

[0002] For patients with severe lower limb trauma, chronic ulcers, or tissue defects after tumor resection and for whom there are no available anastomotic vessels on the affected side, flap repair is often used. This surgery involves constructing a vascular bridge from the healthy side of the limb, wrapping it with an autologous skin graft, and then connecting it to the transplanted flap across both legs to the affected side of the limb. This provides temporary blood supply support to the flap. Once the flap survives, a vascular bridge closure surgery is performed. This is a key technique for repairing lower limb tissue defects.

[0003] The following problems exist in the postoperative care of vascular grafts: First, as a temporary blood supply channel across both lower limbs, the vascular graft needs to be protected from external pressure, traction, and displacement or twisting caused by gravity during its survival period. However, in clinical practice, only fixation frames are currently used to immobilize both lower limbs. The patient's lower limbs are in a suspended state for a long time, which not only easily causes discomfort such as soreness, numbness, and muscle tension in the lower limbs, but may also lead to unconscious limb movements due to decreased patient tolerance, increasing the risk of traction on the vascular graft. Secondly, the pulsation frequency of the vascular graft is an indicator that reflects the blood supply status of the flap in real time. At the same time, in clinical practice, Vaseline gauze or iodine gauze is often used to cover the vascular graft to keep it moist. Every time medical staff observe the pulsation of the vascular graft, they need to repeatedly remove the covering, which is cumbersome and cannot be monitored in real time. This can easily lead to medical staff not being able to detect abnormal pulsation of the vascular graft in time, thereby increasing the risk of flap ischemia and necrosis. Summary of the Invention

[0004] The purpose of this invention is to provide a vascular bridge protection device that, by covering the patient's legs and the outside of the vascular bridge, limits and supports the legs, reduces the risk of vascular bridge traction, and alleviates the patient's discomfort from the lower limbs being suspended in the air. At the same time, it can realize the data and visualization of vascular bridge pulsation, making it convenient for medical staff to judge the blood supply status of the flap in a timely manner.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vascular bridge protection device, comprising a main protective cover and a secondary protective cover.

[0006] The main protective cover includes an adjustable cover shell, and the bottom of the adjustable cover shell is provided with two sets of adjustable support legs for supporting and protecting the patient's lower limbs.

[0007] The adjustable cover includes an outer cover and an inner cover, which are slidably connected to each other to adjust the width of the main protective cover. The adjustable cover is provided on the top of the adjustable cover for easy opening and closing, making it easy to observe the inside of the adjustable cover.

[0008] The adjustable housing is equipped with a pulsation monitoring component for real-time monitoring of the pulsation of the vascular bridge.

[0009] Preferably, a groove is provided on the side of the outer cover near the inner cover, and the side of the inner cover near the outer cover extends into the groove and is slidably connected to the groove.

[0010] Preferably, the bottom end of the outer cover has two slide grooves two that communicate with the slide groove one. The bottom end of the inner cover near the outer cover has two sliders one. The two sliders one are respectively located inside the slide groove two and extend out of the bottom of the outer cover. The sliders one are slidably connected to the slide groove two. Each slider one is threaded with a locking bolt one for fixing the slider one to the outer cover.

[0011] Preferably, the adjustable cover includes an outer cover plate and an extension cover plate. The outer cover plate has a sliding groove three on the side near the extension cover plate, and the side of the extension cover plate near the outer cover plate extends into the sliding groove three and is slidably connected to the sliding groove three.

[0012] Preferably, the top of the outer cover plate has two slide grooves four that communicate with the slide groove three. The top of the extension cover plate near the outer cover plate has two sliders two. The two sliders two are respectively located inside the slide groove four and extend out of the top of the outer cover plate. The sliders two are slidably connected to the slide groove four. Each slider two is threaded with a locking bolt two for fixing the slider two to the outer cover plate.

[0013] Preferably, the outer cover plate is hinged to the side of the outer shell away from the extension cover plate and the side of the outer cover away from the inner cover plate. A handle is fixed to the other side of the extension cover plate away from the top of the outer cover plate. At least one locking rod is fixed to the bottom of the side of the extension cover plate away from the outer cover plate. At least one locking groove adapted to the locking rod is opened on the top of the side of the inner cover away from the outer cover. When the adjustable cover is closed on the adjustable cover, the locking rod is inserted into the locking groove so that the adjustable cover and the adjustable cover are fixed.

[0014] Preferably, the adjustable support leg includes a base plate, and a telescopic plate is fixed to the top of the base plate. The telescopic plate includes an outer plate and an inner plate disposed within the outer plate. The inner plate is slidably connected to the outer plate, and at least one locking bolt for fixing the outer plate and the inner plate is threaded to the outside of the outer plate. The inner plates of the two sets of adjustable support legs are respectively disposed at the bottom of the outer cover and the inner cover, for supporting the adjustable cover and facilitating the adjustment of the height of the main protective cover.

[0015] Preferably, the pulsation monitoring component includes a pulsation monitoring sensor; a telescopic rod is fixedly mounted on the top of the pulsation monitoring sensor, and a mounting plate is fixedly mounted on the end of the telescopic rod away from the pulsation monitoring sensor. A transverse slide rail is provided on the side of the mounting plate away from the telescopic rod, and at least one set of longitudinal slide rails is provided on the side of the transverse slide rail away from the mounting plate. The side of the longitudinal slide rail away from the transverse slide rail is fixed to the inner wall of the outer casing. Four locking bolts for fixing the mounting plate are threadedly connected to the mounting plate, which facilitates the adjustment of the position of the pulsation monitoring sensor so that the pulsation monitoring sensor contacts the vascular bridge for real-time monitoring of the pulsation of the vascular bridge.

[0016] Preferably, a control screen is fixed to the top of the outer cover plate, the control screen is located between two sliding grooves, and the pulsation monitoring sensor is connected to the control screen so that the monitoring data can be transmitted to the control screen.

[0017] Preferably, both the outer and inner covers have inserts fixed to their front sides, and both the outer and inner covers have slots on their rear sides that are compatible with the inserts. The main protective cover, except for the pulsation monitoring component and the control panel, has the same structure as the secondary protective cover. When the secondary protective cover is spliced ​​with the main protective cover, the inserts are inserted into their adjacent slots, and the two adjacent outer covers and the two adjacent inner covers are connected by snap-fit ​​connections to adjust the length of the main protective cover.

[0018] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. This device can be placed over the patient's legs and the vascular bridge between the legs. On the one hand, it can limit and protect the patient's legs, preventing the vascular bridge from being pulled or twisted due to the patient's unconscious displacement of the legs, and isolating the patient from external pressure, reducing the risk of vascular bridge damage and blood supply interruption, and ensuring the stability of the flap's blood supply. On the other hand, it can solve the problems of soreness, numbness, and muscle tension caused by the patient's lower limbs being suspended, improve the patient's comfort, and indirectly reduce unconscious limb movements caused by discomfort, further reducing the risk of vascular bridge traction. 2. This device monitors the pulsation of the vascular graft in real time through a pulsation monitoring sensor, and then transmits the pulsation data to the control screen for display, realizing the digitization and visualization of the vascular graft pulsation. This allows medical staff to intuitively judge the blood supply of the flap, detect abnormalities in a timely manner, and avoid delaying the intervention time. 3. The length, width, and height of this device are all easily adjustable to meet the protection needs of different patients, making it highly versatile and reducing the cost of clinical application. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the main protective cover and a secondary protective cover in Embodiment 1. Figure 2 This is a diagram of the bottom structure of the main protective cover in Embodiment 1; Figure 3 This is a structural diagram showing the adjustable cover opening of the main protective cover in Embodiment 1; Figure 4 This is a structural diagram of the adjustable cover and adjustable cover of Embodiment 1; Figure 5 for Figure 4 Enlarged view of section A in the middle; Figure 6 for Figure 4 Bottom structure diagram; Figure 7 for Figure 6 Enlarged view of section B in the middle; Figure 8 This is a structural diagram of the adjustable support leg in Example 1; Figure 9 This is a structural diagram of the pulsation monitoring component in Example 1; Figure 10 This is a structural diagram of the main protective cover in Embodiment 2.

[0020] Explanation of reference numerals in the attached figures: 100. Main protective cover; 200. Secondary protective cover; 1. Adjustable cover; 11. Outer cover; 12. Inner cover; 13. Slide groove one; 14. Slide groove two; 15. Slider one; 16. Locking bolt one; 17. Slot; 2. Adjustable cover; 21. Outer cover plate; 22. Extension cover plate; 23. Slide groove three; 24. Slide groove four; 25. Slider two; 26. Locking bolt two; 27. Locking rod; 3. Adjustable support legs; 31. Base plate; 32. Telescopic plate; 321. Outer plate; 322. Inner plate; 323. Locking bolts (three types); 4. Pulse monitoring component; 41. Pulse monitoring sensor; 42. Telescopic rod; 43. Mounting plate; 44. Lateral slide rail; 45. Longitudinal slide rail; 46. Locking bolts (four); 5. Control panel; 6. Insert block; 7. Slot. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] This invention provides, for example Figures 1-9The illustrated vascular bridge protection device includes a main protective cover 100, which includes an adjustable cover 1. The adjustable cover 1 includes an outer cover 11 and an inner cover 12. The outer cover 11 has a groove 13 on the side near the inner cover 12, and the groove 13 extends to both ends of the outer cover 11. The inner cover 12 can slide into the groove 13 on the side near the outer cover 11. Two grooves 14 communicating with the groove 13 are also provided at the bottom of the outer cover 11. Two sliders 15 are fixed at the bottom of the side of the inner cover 12 near the outer cover 11. When the inner cover 12 enters the groove 13, the two sliders 15 are respectively located inside the groove 14 and extend out of the bottom of the outer cover 11. The sliders 15 are slidably connected to the groove 14. Each slider 15 is threaded with a locking bolt 16 for fixing the slider 15 to the outer cover 11.

[0024] Next, two sets of adjustable support legs 3 are provided at the bottom of the adjustable cover 1 for supporting and protecting the patient's lower limbs. Specifically, the adjustable support leg 3 includes a base plate 31, and a telescopic plate 32 is fixed at the top of the base plate 31. The telescopic plate 32 includes an outer plate 321 and an inner plate 322 located inside the outer plate 321. The inner plate 322 is slidably connected to the outer plate 321, and at least one locking bolt 323 for fixing the outer plate 321 and the inner plate 322 is threaded on the outside of the outer plate 321. The inner plates 322 of the two sets of adjustable support legs 3 are respectively fixed to the bottom of the outer cover 11 and the inner cover 12 for supporting the adjustable cover 1 and facilitating the adjustment of the height of the main protective cover 100.

[0025] The adjustable cover 1 has an adjustable cover 2 on its top. The adjustable cover 2 includes an outer cover plate 21 and an extension cover plate 22. The outer cover plate 21 has a sliding groove 3 23 on the side near the extension cover plate 22. The side of the extension cover plate 22 near the outer cover plate 21 extends into the sliding groove 3 23 and is slidably connected to the sliding groove 3 23.

[0026] The top of the outer cover plate 21 has two grooves 24 that communicate with the grooves 23. Two sliders 25 are fixed to the top of the extension cover plate 22 on the side closest to the outer cover plate 21. The two sliders 25 are respectively located inside the grooves 24 and extend beyond the top of the outer cover plate 21, and are slidably connected to the grooves 24. Each slider 25 is threaded with a locking bolt 26 for fixing the slider 25 to the outer cover plate 21. After sliding the inner plate 322 along the outer plate 321 to a suitable position, tightening the locking bolts 323 fixes the inner plate 322, facilitating adjustment of the length of the telescopic plate 32.

[0027] In use, first connect the extension cover 22 outside the adjustable cover 1 to the top of the inner cover 12. Cover the outer cover 11 and the inner cover 12 on the outside of the patient's legs respectively, and insert the inner cover 12 into the first groove 13 of the outer cover 11. Insert the extension cover 22 into the third groove 23 of the outer cover 21. At the same time, slide the first slider 15 along the second groove 14 and slide the second slider 25 along the fourth groove 24. At this time, the patient's legs and the vascular bridge between the legs are located in the space enclosed by the adjustable cover 1 and the adjustable cover 2. Then tighten the locking bolt 16 to fix the outer cover 11 and the inner cover 12, and tighten the locking bolt 26 to fix the outer cover 21 and the extension cover 22. Then adjust the length of the telescopic plate 32 so that the base plate 31 contacts the bed.

[0028] On the one hand, this invention can limit and protect the patient's legs, avoiding traction and twisting of the vascular graft caused by unconscious displacement of the patient's legs, and isolating the patient from external pressure, reducing the risk of vascular graft damage and blood supply interruption, and ensuring the stability of the flap blood supply. On the other hand, it solves the problems of soreness, numbness and muscle tension caused by the patient's lower limbs being suspended, improves the patient's comfort, indirectly reduces unconscious limb movements caused by discomfort, and further reduces the risk of vascular graft traction.

[0029] Furthermore, since the distance between the outer shell 11 and the inner shell 12 is adjustable, and the height of the adjustable support leg 3 is easy to adjust, the width and height of the device can be easily adjusted to meet the limiting and support needs of different patients, making it highly versatile and reducing the cost of clinical application.

[0030] In addition, during actual clinical use, a soft pad can be placed between the adjustable cover 1 and the patient's legs to further improve patient comfort.

[0031] To facilitate observation of vascular bridges, such as Figure 2 As shown, the side of the outer cover plate 21 away from the extension cover plate 22 is hinged to the side of the outer casing 11 away from the inner casing 12 via a hinge. A handle is fixed to the other side of the extension cover plate 22 away from the top of the outer cover plate 21. At least one locking rod 27 is fixed to the bottom of the side of the extension cover plate 22 away from the outer cover plate 21, and at least one locking groove 17 adapted to the locking rod 27 is opened on the top of the side of the inner casing 12 away from the outer casing 11.

[0032] Rotating the adjustable cover 2 opens it, allowing medical personnel to observe and operate the vascular bridge inside the adjustable cover 1. Reverse rotation of the adjustable cover 2 closes it onto the adjustable cover 1, simultaneously inserting the locking lever 27 of the adjustable cover 2 into the locking groove 17 of the adjustable cover 1, thus securing the adjustable cover 2 to the adjustable cover 1. In actual use, a rubber sleeve can be wrapped around the locking lever 27 to increase the friction between the locking lever 27 and the locking groove 17, thereby improving the stability of the adjustable cover 2 and the adjustable cover 1.

[0033] like Figure 3 and Figure 9 As shown, the adjustable housing 1 is equipped with a pulsation monitoring component 4. The pulsation monitoring component 4 includes a pulsation monitoring sensor 41. A telescopic rod 42 is fixedly mounted on the top of the pulsation monitoring sensor 41. A mounting plate 43 is fixed to the end of the telescopic rod 42 away from the pulsation monitoring sensor 41. A transverse slide rail 44 is provided on the side of the mounting plate 43 away from the telescopic rod 42. At least one set of longitudinal slide rails 45 is provided on the side of the transverse slide rail 44 away from the mounting plate 43. The side of the longitudinal slide rails 45 away from the transverse slide rails 44 is fixed to the inner wall of the outer housing 11. Locking bolts 46 for fixing the mounting plate 43 are threadedly connected to the mounting plate 43.

[0034] The design of the telescopic rod 42 facilitates the adjustment of the position of the pulsation monitoring sensor 41 in the X direction, the design of the transverse slide rail 44 facilitates the adjustment of the position of the pulsation monitoring sensor 41 in the Y direction, and the design of the longitudinal slide rail 45 facilitates the adjustment of the position of the pulsation monitoring sensor 41 in the Z direction. This facilitates the adjustment of the three-dimensional position of the pulsation monitoring sensor 41. After adjustment, tightening the locking bolts 46 on the mounting plate 43 to press against the inner wall of the outer cover 11 can fix the pulsation monitoring sensor 41 so that the pulsation monitoring sensor 41 contacts the surface of the vascular bridge for real-time monitoring of the pulsation of the vascular bridge.

[0035] The pulsation monitoring sensor 41 can be an optical pulse wave sensor BH1792GLC. Its working principle mainly relies on the changes in light emitted by LEDs. These lights fluctuate with the fluctuation of blood vessel volume, which in turn causes changes in the amount of light absorbed, thereby capturing the pulse wave. Moreover, the present invention has a control screen 5 fixed at the top of the outer cover plate 21. The control screen 5 is located between two sliding grooves 24. The pulsation monitoring sensor 41 is connected to the control screen 5 so that the monitoring data can be transmitted to the control screen 5. When the number of pulsations is abnormal (lower than the normal number of heartbeats), an alarm is triggered, realizing the digitization and visualization of vascular graft pulsation. This allows medical staff to intuitively judge the blood supply of the flap, detect abnormalities in a timely manner, and avoid delaying the intervention.

[0036] In clinical practice, Vaseline gauze or iodine gauze needs to be covered on the patient's legs to keep the vascular bridge moist. At the same time, the gauze also covers the pulsation monitoring sensor 41. In order to avoid affecting the use of the pulsation monitoring sensor 41, the sensor can be processed, including but not limited to the following methods: the sensor body is flexibly encapsulated with medical liquid silicone rubber, exposing only the optical window to prevent the intrusion of iodine or Vaseline. The surface of the optical window is sprayed with a nano anti-stick coating, such as a perfluoropolyether coating with a thickness ≤5μm, to reduce the adhesion of Vaseline or iodine without affecting the light transmittance, making it easier to clean.

[0037] In practice, the length of the vascular graft varies among different patients. Therefore, this invention has insert blocks 6 fixed on the front sides of both the outer casing 11 and the inner casing 12, and slots 7 adapted to the insert blocks 6 are provided on the rear sides of both the outer casing 11 and the inner casing 12. A secondary protective cover 200 is also designed. The secondary protective cover 200 does not have the pulsation monitoring component 4 and the control panel 5. Apart from this, the structure of the secondary protective cover 200 is the same as that of the main protective cover 100.

[0038] When a suitable number of secondary protective covers 200 are spliced ​​with the main protective cover 100, the insert block 6 is inserted into its adjacent slot 7, and then the two adjacent outer covers 11 and the two adjacent inner covers 12 are connected by snaps to adjust the length of the device, so as to provide comprehensive protection for vascular bridges of different patients and have a wide range of applications.

[0039] Example 2

[0040] Unlike Example 1, as Figure 10 As shown, in this embodiment, the vertical part and the horizontal part of the L-shaped outer shell 11 are detachably connected by fasteners such as bolts, and two insertion ports are opened at the bottom of the horizontal part of the outer shell 11. The top of the inner plate 322 of the adjustable support leg 3 on the outer shell 11 can be inserted into the insertion port.

[0041] The vertical and horizontal parts of the L-shaped inner cover 12 are detachably connected by fasteners such as bolts. Two slots are provided at the bottom of the horizontal part of the inner cover 12, and the top of the inner plate 322 of the adjustable support leg 3 on the inner cover 12 can be inserted into the slots.

[0042] When the patient's leg flap is located at the bottom of the leg, to avoid the horizontal portions of the outer shell 11 and inner shell 12 compressing the flap, the corresponding horizontal portions of the shell can be removed: If the flap is located at the bottom of the patient's left leg, the horizontal part of the outer shell 11 is removed so that there is no external pressure on the bottom of the left leg. The right leg is supported by the inner shell 12. Adjustable support legs 3 are installed in the two insertion ports at the bottom of the inner shell 12 to stably support the inner shell 12 and ensure the protective effect of the device on the vascular bridge. If the flap is located at the bottom of the patient's right leg, the horizontal part of the inner cover 12 is removed so that there is no external pressure on the bottom of the right leg. The left leg is supported by the outer cover 11. Adjustable support legs 3 are installed in the two ports at the bottom of the outer cover 11 to provide stable support for the outer cover 11 and ensure the protective effect of the device on the vascular bridge.

[0043] This embodiment uses a detachable cover structure to enable the device to adapt to the nursing needs of flaps in different locations, improve the applicability of the device, avoid abnormal blood supply to the flaps due to cover pressure, and ensure the treatment effect.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vascular bridge protection device, characterized in that: Includes a main protective cover (100) and a secondary protective cover (200); The main protective cover (100) includes an adjustable cover (1), and the bottom of the adjustable cover (1) is provided with two sets of adjustable support legs (3) for supporting and protecting the patient's lower limbs; The adjustable cover (1) includes an outer cover (11) and an inner cover (12), which are slidably connected to each other to adjust the width of the main protective cover (100); The adjustable cover (1) is provided with an adjustable cover (2) on the top for easy opening and closing, so as to facilitate observation of the inside of the adjustable cover (1); The adjustable housing (1) is equipped with a pulsation monitoring component (4) for real-time monitoring of the pulsation of the vascular bridge.

2. The vascular bridge protection device according to claim 1, characterized in that: The outer cover (11) has a groove (13) on the side near the inner cover (12), and the inner cover (12) extends into the groove (13) on the side near the outer cover (11) and is slidably connected to the groove (13).

3. The vascular bridge protection device according to claim 2, characterized in that: The bottom of the outer shell (11) has two slide grooves (14) that communicate with the slide groove (13). The bottom of the inner shell (12) near the outer shell (11) has two sliders (15). The two sliders (15) are respectively located inside the slide grooves (14) and extend out of the bottom of the outer shell (11). The sliders (15) are slidably connected to the slide grooves (14). Each slider (15) is threaded with a locking bolt (16) for fixing the slider (15) to the outer shell (11).

4. The vascular bridge protection device according to claim 1, characterized in that: The adjustable cover (2) includes an outer cover plate (21) and an extension cover plate (22). The outer cover plate (21) has a sliding groove three (23) on the side near the extension cover plate (22). The extension cover plate (22) extends into the sliding groove three (23) on the side near the outer cover plate (21) and is slidably connected to the sliding groove three (23).

5. A vascular bridge protection device according to claim 4, characterized in that: The top of the outer cover plate (21) has two slide grooves (24) that communicate with the slide groove three (23). The top of the extension cover plate (22) near the outer cover plate (21) has two sliders (25). The two sliders (25) are respectively located inside the slide groove four (24) and extend out of the top of the outer cover plate (21). The sliders (25) are slidably connected to the slide groove four (24). Each slider (25) is threaded with a locking bolt (26) for fixing the slider (25) and the outer cover plate (21).

6. A vascular bridge protection device according to claim 4, characterized in that: The outer cover plate (21) is hinged to the side of the outer casing (11) away from the inner casing (12) on the side away from the extension cover plate (22), and a handle is fixed to the other side of the extension cover plate (22) away from the top of the outer cover plate (21). At least one locking rod (27) is fixed at the bottom of the side of the extension cover (22) away from the outer cover (21). At least one slot (17) adapted to the locking rod (27) is opened at the top of the side of the inner cover (12) away from the outer cover (11). When the adjustable cover (2) is closed on the adjustable cover (1), the locking rod (27) is inserted into the slot (17) so that the adjustable cover (2) and the adjustable cover (1) are fixed.

7. The vascular bridge protection device according to claim 1, characterized in that: The adjustable support leg (3) includes a base plate (31), and a telescopic plate (32) is fixed at the top of the base plate (31). The telescopic plate (32) includes an outer plate (321) and an inner plate (322) disposed inside the outer plate (321). The inner plate (322) is slidably connected to the outer plate (321), and at least one locking bolt (323) for fixing the outer plate (321) and the inner plate (322) is threaded on the outside of the outer plate (321). The inner plates (322) of the two sets of adjustable support legs (3) are respectively located at the bottom of the outer shell (11) and the inner shell (12) to support the adjustable shell (1) and facilitate the adjustment of the height of the main protective cover (100).

8. A vascular bridge protection device according to claim 5, characterized in that: The pulsation monitoring component (4) includes a pulsation monitoring sensor (41), a telescopic rod (42) is fixedly provided on the top of the pulsation monitoring sensor (41), and a mounting plate (43) is fixed at the end of the telescopic rod (42) away from the pulsation monitoring sensor (41). The mounting plate (43) is provided with a transverse slide rail (44) on the side away from the telescopic rod (42), and the transverse slide rail (44) is provided with at least one set of longitudinal slide rails (45) on the side away from the mounting plate (43). The side of the longitudinal slide rail (45) away from the transverse slide rail (44) is fixed to the inner wall of the outer cover (11). The mounting plate (43) is threaded with four locking bolts (46) for fixing the mounting plate (43), which facilitates the adjustment of the position of the pulsation monitoring sensor (41) so that the pulsation monitoring sensor (41) contacts the vascular bridge for real-time monitoring of the pulsation of the vascular bridge.

9. A vascular bridge protection device according to claim 8, characterized in that: The top of the outer cover plate (21) is fixed with a control screen (5), which is located between two sliding grooves (24). The pulsation monitoring sensor (41) is connected to the control screen (5) so that the monitoring data can be transmitted to the control screen (5).

10. A vascular bridge protection device according to claim 9, characterized in that: Both the outer casing (11) and the inner casing (12) are fixed with inserts (6) on the front side, and both the outer casing (11) and the inner casing (12) are provided with slots (7) that are compatible with the inserts (6) on the rear side. The main protective cover (100) has the same structure as the secondary protective cover (200) except for the pulsation monitoring component (4) and the control panel (5). When the secondary protective cover (200) is spliced ​​with the main protective cover (100), the insert (6) is inserted into its adjacent slot (7), and the two adjacent outer shells (11) and the two adjacent inner shells (12) are connected by snap fasteners to adjust the length of the main protective cover (100).