Intravascular Ultrasound Imaging System with Isolation Bag

Abstract

The present disclosure provides an intravascular ultrasound imaging system with an isolation bag, characterized in that it includes: an ultrasound catheter having a transmission shaft and an ultrasound probe connected to the transmission shaft; a retraction device having a retraction host and a support portion carrying the retraction host, the retraction host including an assembly portion connected to the ultrasound catheter, the support portion having a substrate carrying the retraction host and a fixing portion located on the side of the retraction host facing the ultrasound probe, the retraction host being mounted on the substrate and slidably moving along the length direction of the substrate; and an isolation bag, which includes a bag body, and a clamping portion and a connecting portion arranged on the bag body, the clamping portion having a base and a clamping head fixed to the base via the bag body, the base being mounted on the fixing portion, the connecting portion having a receiving hole penetrating the bag body, the receiving hole being configured to have a size that can receive a catheter, the connecting portion being mounted on the assembly portion, and the ultrasound catheter being matched with the retraction host via the receiving hole. Thus, the catheter can be clamped separately in the clamping portion.

Description

Technical Field

[0001] The present disclosure relates to an intravascular ultrasound imaging system with an isolation bag. Background Art

[0002] The IVUS system, also known as the intravascular ultrasound imaging system, is mainly composed of an IVUS catheter, an IVUS retraction device, and an IVUS host system. In actual operation, the IVUS catheter is generally pushed to the area of ​​vascular lesions through radial artery or femoral artery puncture. During the retraction process, the catheter core will obtain the cross-sectional structural information of the lumen and wall of the blood vessel through the miniature ultrasonic transducer at the front end of the core, and then image and process the image on the host system, and finally display the cross-section and longitudinal section of the lumen and wall of the blood vessel within a specific range in the form of images. During the retraction process of the catheter, it is required to maintain rapid rotation and the retraction speed must be uniform.

[0003] In the prior art, the retraction device is mainly composed of a rotating motor, a translation motor, a movable platform, a slip ring, a slide rail, and a circuit part. The shaft of the rotating motor is connected to the tube core of the catheter, driving the tube core and the ultrasonic transducer to rotate for imaging. The translation motor controls the movable platform to translate forward and backward along the slide rail through a gear connection. The slip ring is located on the movable platform, and its main function is to couple the signal line located in the tube core and rotating with the tube core with the circuit board signal line fixed on the movable platform and without rotational motion.

[0004] In existing equipment, the catheter and the withdrawal device need to be isolated by an isolation bag. In addition to being connected to the motor in the withdrawal device, the catheter also needs to be clamped with the withdrawal device on the withdrawal path together with the isolation bag, so as to improve the withdrawal stability of the catheter. Therefore, the catheter will generate friction with the withdrawal device at the clamping position during withdrawal, and the isolation bag between the withdrawal device and the catheter is more prone to damage and tearing.

[0005] In addition, the position where the catheter is clamped with the withdrawal device is not fixed, resulting in an inconsistency in the length of the isolation bag between the clamping position and the connection position, which may cause tearing and the like. Summary of the invention

[0006] The present disclosure is made in view of the above-mentioned prior art conditions, and its purpose is to provide an intravascular ultrasound imaging system with an isolation bag that can avoid wear and tear of the isolation bag.

[0007] To this end, the present disclosure provides an intravascular ultrasound imaging system with an isolation bag, characterized in that it includes: an ultrasound catheter having a transmission shaft and an ultrasound probe connected to the transmission shaft; a retraction device having a retraction host and a support portion for carrying the retraction host, the retraction host including an assembly portion connected to the ultrasound catheter, the support portion having a substrate for carrying the retraction host and a fixing portion located on a side of the retraction host facing the ultrasound probe, the retraction host being mounted on the substrate and slidably moving along the length direction of the substrate; and an isolation bag, comprising a bag body, and a clamping portion and a connecting portion arranged on the bag body, the clamping portion having a base and a clamping head fixed to the base via the bag body, the base being mounted on the fixing portion, the connecting portion having a receiving hole passing through the bag body, the receiving hole being configured to have a size that can receive the ultrasound catheter, the connecting portion being mounted on the assembly portion, and the ultrasound catheter cooperating with the retraction host via the receiving hole.

[0008] In the intravascular ultrasound imaging system involved in the present disclosure, the isolation bag connects the clamping part with the fixing part of the support plate, and connects the connecting part with the assembly part of the retraction host. In this case, the catheter can be clamped in the clamping part, and the end of the catheter can be connected to the connecting part. Thus, the catheter can be clamped in the clamping part alone, thereby avoiding the possibility of wear and tear of the isolation bag.

[0009] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, a predetermined spacing is provided between any point on the clamping portion close to one side of the connecting portion and any point on the connecting portion close to one side of the clamping portion. In this case, the isolation bag between the clamping portion and the connecting portion is set to a suitable length, so that during the withdrawal process, the isolation bag between the clamping portion and the connecting portion will not be torn due to insufficient length.

[0010] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the connecting portion is a clip that is detachably fixed to the bag body, and the clip is provided with a protrusion that matches the shape of the assembly portion. Thus, the clip can fix the isolation bag between the clips in a clamping manner and assemble it on the assembly portion.

[0011] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the protrusion of the connecting portion is provided with a notch, and the assembly portion is provided with a positioning column matched with the notch. Thus, the assembly form of the connecting portion and the assembly portion can be defined by the matching relationship between the notch and the positioning column.

[0012] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the clamping portion includes the clamping head disposed on the base toward the outside, and the clamping portion also includes a protrusion disposed on the base toward the inside. In this case, the base can better match the fixing portion, so that the catheter can be stably withdrawn by clamping with the clamping head.

[0013] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the width of the fixing portion gradually decreases from one end close to the supporting portion to one end away from the supporting portion, and the fixing portion has a groove that matches the protrusion of the clamping portion. Thus, the base can be stably fixed to the fixing portion through the inner protrusion.

[0014] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the isolation bag is sleeved on the withdrawal main unit and the support part, and is used to isolate the ultrasound catheter from the withdrawal device, thereby completely isolating the catheter from the withdrawal device.

[0015] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the base further includes a strip arranged on the side where the clamping head is located and arranged along the opposite direction of the clamping head, thereby further limiting the deviation of the base and improving the stability of the base fixed to the fixing part.

[0016] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the clamping head of the clamping part is arranged on the central axis of the base, and the width of the base is smaller than the width of the fixing part, thereby reducing the weight of the fixing part.

[0017] In addition, in the intravascular ultrasound imaging system of the present disclosure, optionally, the clamping portion further includes a boss disposed between the clamping heads, thereby providing a buffer when clamping the catheter.

[0018] According to the present disclosure, an intravascular ultrasound imaging system with an isolation bag can be provided, which can prevent the isolation bag from being worn or torn. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Embodiments of the present disclosure will now be explained in further detail, by way of example only, with reference to the accompanying drawings, in which:

[0020] Figure 1 3 is a schematic diagram showing the use status of the intravascular ultrasound imaging system with an isolation bag involved in an embodiment of the present disclosure.

[0021] Figure 2 is a schematic diagram showing the structure of a retraction device of an intravascular ultrasound imaging system with an isolation bag involved in an embodiment of the present disclosure.

[0022] Figure 3 3 is a schematic diagram showing the separation of the retraction device and the isolation bag of the intravascular ultrasound imaging system with the isolation bag involved in the embodiment of the present disclosure.

[0023] Figure 4 3 is a schematic diagram showing the structure of a clamping portion of an isolation bag of an intravascular ultrasound imaging system with an isolation bag according to an embodiment of the present disclosure.

[0024] Figure 5 3 is a schematic diagram showing the connection structure of an isolation bag of an intravascular ultrasound imaging system with an isolation bag according to an embodiment of the present disclosure.

[0025] Figure 6 3 is a schematic diagram showing the cross-sectional structure of an isolation bag of an intravascular ultrasound imaging system with an isolation bag according to an embodiment of the present disclosure.

[0026] Description of Figure Numbers:

[0027] 1…an intravascular ultrasound imaging system with an isolation bag, 2…an ultrasound catheter, 10…a retraction device, 11…a retraction main unit, 111…an assembly portion, 12…a base plate, 121…a slide rail, 13…a fixing portion, 131…a fixing end, 20…an isolation bag, 21…a bag body, 22…a clamping portion, 221…a base, 2211…a protrusion, 2212…a strip, 222…a clamping head, 223…a boss, 23…a connecting portion, (231, 232)…a protrusion, 2311…a notch, 233…a receiving hole. DETAILED DESCRIPTION

[0028] The present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the accompanying drawings, the same components or components with the same functions are marked with the same symbols, and repeated descriptions thereof are omitted.

[0029] The withdrawal device 10 involved in this embodiment can be used in an IVUS system (also known as an intravascular ultrasound imaging system), and the IVUS system is mainly composed of an ultrasound catheter, a withdrawal device 10, and an IVUS host system. The catheter is withdrawn through the withdrawal device 10. During the withdrawal process, it is required to maintain rapid rotation and the withdrawal speed must be uniform. However, this embodiment is not limited to this. In some examples, the withdrawal device 10 involved in this embodiment can also be used to measure the catheter withdrawal in the blood flow reserve fraction (FFR, Fractional Flow Reserve), and the FFR measurement system is mainly composed of a pressure measurement catheter, a withdrawal device 10, and an FFR host system. In other examples, the withdrawal device 10 involved in this embodiment can also be used for the catheter withdrawal in optical coherence tomography (OCT, Optical Coherence Tomography), and the OCT system is mainly composed of an optical detection catheter, a withdrawal device 10, and an OCT host system. In addition, in some examples, the retraction device 10 involved in this embodiment can also be used for catheter retraction in phased array intravascular ultrasound imaging. The phased array intravascular ultrasound imaging system is mainly composed of a phased array ultrasound catheter, a retraction device 10 and a phased array ultrasound host system.

[0030] Figure 1 1 is a schematic diagram showing a usage state of the intravascular ultrasound imaging system 1 with the isolation bag 20 according to an embodiment of the present disclosure.

[0031] like Figure 1 As shown, in this embodiment, the intravascular ultrasound imaging system 1 with an isolation bag 20 involved in the present disclosure includes an ultrasound catheter 2 (sometimes also referred to as a "catheter"), a withdrawal device 10 and an isolation bag 20. The ultrasound catheter 2 may have a transmission shaft and an ultrasound probe connected to the transmission shaft. The withdrawal device 10 may have a withdrawal host 11 and a support portion for carrying the withdrawal host 11, wherein the withdrawal host 11 may include an assembly portion 111 connected to the catheter, and the support portion may have a base plate 12 for carrying the withdrawal host 11 and a fixing portion 13 located on the side of the withdrawal host 11 facing the ultrasound probe, and the withdrawal host 11 is mounted on the base plate 12 and can be slidably moved along the length direction of the base plate 12. The isolation bag 20 may include a bag body 21, and a clamping portion 22 and a connecting portion 23 arranged on the bag body 21, wherein the clamping portion 22 has a base 221 and a clamping head 222 fixed to the base 221 via the bag body 21, the base 221 is installed on the fixing portion 13, the connecting portion 23 has a receiving hole 233 that passes through the bag body 21, the receiving hole 233 is configured to have a size that can receive a catheter, the connecting portion 23 is installed on the assembly portion 111, and the ultrasonic catheter 2 cooperates with the retraction host 11 via the receiving hole 233.

[0032] In the intravascular ultrasound imaging system 1 involved in the present disclosure, the isolation bag 20 connects the clamping portion 22 with the fixing portion 13 of the support plate, and connects the connecting portion 23 with the assembly portion 111 of the withdrawal host 11. In this case, the catheter can be clamped in the clamping portion 22, and the end of the catheter can be connected to the connecting portion 23. Thus, the catheter can be clamped in the clamping portion 22 alone, thereby avoiding the possibility of wear and tear of the isolation bag 20.

[0033] In this embodiment, the ultrasound catheter 2 may have a transmission shaft and an ultrasound probe connected to the transmission shaft.

[0034] In some examples, the intravascular ultrasound imaging system 1 can be used to image the diseased area in a human blood vessel, for example. Doctors can send the ultrasound catheter 2 of the intravascular ultrasound imaging system 1 to the diseased area (e.g., a stenosis) of a human blood vessel, and perform ultrasound imaging on the diseased area while withdrawing it, thereby obtaining an intravascular ultrasound image of the area.

[0035] In some examples, the ultrasound probe of the intravascular ultrasound imaging system 1 and the retraction device 10 may be connected via a transmission shaft.

[0036] Figure 2 Schematic diagram showing the structure of a retraction device 10 of an intravascular ultrasound imaging system 1 with an isolation bag 20 according to an embodiment of the present disclosure.

[0037] like Figure 2 As shown, in this embodiment, the withdrawal device 10 may include a withdrawal main unit 11 and a support portion that supports the withdrawal main unit 11. The withdrawal main unit 11 includes an assembly portion 111 connected to the catheter (see Figure 3 ), the support portion comprises a substrate 12 for carrying the retractable main unit 11 and a fixing portion 13 located on a side of the retractable main unit 11 facing the ultrasonic probe, and the retractable main unit 11 is mounted on the substrate 12 and can be slidably moved along the length direction of the substrate 12.

[0038] In some examples, the base plate 12 may be in the shape of a flat plate. In some examples, the base plate 12 may have a slide rail 121 that allows the retracting host 11 to move along the length direction of the base plate 12. In some examples, the slide rail 121 may be two parallel rails. In other examples, the length of the slide rail 121 may be the maximum length that the retracting host 11 can be retracted.

[0039] In some examples, the withdrawal host 11 may include a translation motor that drives the withdrawal host 11 to translate and a rotation motor that drives the transmission shaft to rotate. Thus, the translation and rotation of the transmission shaft can be controlled by the withdrawal host 11. In other examples, the withdrawal host 11 may only include a translation motor that drives the withdrawal host 11 to translate. Thus, it can be applicable to situations where rotation is not required. Specifically, situations where rotation is not required may include when the withdrawal device 10 is used to measure catheter withdrawal in blood flow reserve fraction or catheter withdrawal in phased array intravascular ultrasound imaging.

[0040] In some examples, the width of the fixing portion 13 may be gradually reduced from one end close to the supporting portion to the end away from the supporting portion, and the fixing portion 13 has a protrusion 2211 (see FIG. 2 ) that is aligned with the clamping portion 22 (described later). Figure 4 ) is provided with a groove that matches the fixing end 131. Thus, the base 221 (described later) can be stably fixed to the fixing portion 13 through the inner protrusion 2211. In other examples, the groove can be provided at the fixing end 131 (see Figure 3 ). Thus, the fixing of the clamping portion 22 can be better matched.

[0041] In some examples, the fixing portion 13 may be detachably mounted on the substrate 12. Specifically, the fixing portion 13 and the substrate 12 may be connected by means of snapping, coupling or bonding. Thus, the fixing portion 13 can be easily replaced. In other examples, the fixing portion 13 may be integrally formed with the clamping portion 22. Thus, the stability between the clamping portion 22 and the fixing portion 13 can be improved. In addition, in some examples, the fixing portion 13 may have a clamping head provided at the fixing end 131. In this case, the withdrawal device 10 may not have the clamping portion 22, and the fixing portion 13 is directly combined with the bag body 21, thereby improving the overall stability of the withdrawal device 10.

[0042] Figure 3 1 is a schematic diagram showing the separation of the withdrawal device 10 and the isolation bag 20 of the intravascular ultrasound imaging system 1 with the isolation bag 20 according to the embodiment of the present disclosure.

[0043] In this embodiment, the isolation bag 20 may include a bag body 21, and a clamping portion 22 and a connecting portion 23 disposed on the bag body 21. In some examples, the clamping portion 22 and the connecting portion 23 may be disposed inside the isolation bag 20. In other examples, the clamping portion 22 and the connecting portion 23 may be embedded in the isolation bag 20.

[0044] In some examples, the bag body 21 can be combined with the clamping portion 22 and the connecting portion 23 by thermoplastic means. In other examples, the bag body 21 can be embedded between the clamping portion 22 and the connecting portion 23 by snapping.

[0045] In some examples, a predetermined spacing may be provided between any point on the clamping portion 22 close to the connecting portion 23 and any point on the connecting portion 23 close to the clamping portion 22. Specifically, the predetermined spacing may be the length of the bag body 21 between the clamping portion 22 and the connecting portion 23. Further, the length of the isolation bag 20 between the clamping portion 22 and the connecting portion 23 may be greater than or equal to the distance between the main body 11 and the fixing portion 13 after the main body 11 reaches the maximum retraction distance. In this case, the isolation bag 20 between the clamping portion 22 and the connecting portion 23 is set to a suitable length, so that during the retraction process, the isolation bag 20 between the clamping portion 22 and the connecting portion 23 will not be torn due to insufficient length.

[0046] Figure 4 1 is a schematic structural diagram of a clamping portion 22 of an isolation bag 20 of an intravascular ultrasound imaging system 1 with an isolation bag 20 according to an embodiment of the present disclosure.

[0047] In this embodiment, the clamping portion 22 has a base 221 and a clamping head 222 fixed to the base 221 via the bag body 21, and the base 221 can be mounted on the fixing portion 13. In some examples, the clamping head 222 can be integrally formed on the base 221. In other examples, the clamping head 222 can be detachably mounted on the base 221.

[0048] In some examples, the clamping portion 22 may be mounted on a fixing end 131 of the fixing portion 13 , and the fixing end 131 is located at one end side of the fixing portion 13 .

[0049] In some examples, the clamping portion 22 may include a clamping head 222 disposed on the base 221 toward the outside, and the clamping portion 22 may also include a protrusion 2211 disposed on the base 221 toward the inside. Specifically, the clamping head 222 may be disposed perpendicular to the base 221. In this case, the base 221 can better match the fixing portion 13, so that the catheter can be stably retracted by clamping with the clamping head 222.

[0050] In some examples, the base 221 may be L-shaped. In other examples, when the base 221 is L-shaped, the clamping head 222 and the protrusion 2211 may be respectively arranged on different sides. In other examples, the clamping head 222 and the protrusion 2211 may also be arranged on the same side. In addition, in some examples, the base 221 may be straight, U-shaped or other irregular shapes.

[0051] In other examples, the clamping head 222 may have a plurality of clamping feet, such as two clamping feet. Specifically, the two clamping feet may be arranged opposite to each other and have a certain curvature toward the inside. Thus, the clamping feet may have pressure toward the inside. In some examples, the clamping feet may be in the form of a flat and long sheet. Thus, the clamping feet may be bent and shaped arbitrarily.

[0052] In addition, in some examples, the clamping head 222 can be made of a spring sheet, thereby improving the elasticity of the clamping head 222. In other examples, the clamping head 222 can also be configured as a movable mechanical device with a spring, thereby improving the adaptability and reliability of the clamping head 222.

[0053] In some other examples, the protrusion 2211 may be a cylindrical protrusion 2211. However, the present embodiment is not limited thereto, and the protrusion 2211 may also be formed in a prism, sphere, cone, or other irregular shapes. Thus, different protrusions 2211 may be designed as needed.

[0054] In some examples, when the base 221 is L-shaped, it may include a strip 2212 disposed on the side where the clamping head 222 is located and disposed in the opposite direction to the clamping head 222. Specifically, the protruding direction of the strip 2212 is perpendicular to the side where the clamping head 222 is located in the L-shaped base 221, and the protruding direction of the strip 2212 is parallel to the other side of the base 221 where the clamping head 222 is not disposed. In this way, the deviation of the L-shaped base 221 can be further limited, and the stability of the L-shaped base 221 fixed to the fixing portion 13 can be improved.

[0055] In some examples, the width of the strip 2212 may be less than the width of the base 221. In other examples, the width of the strip 2212 may be equal to the width of the base 221. In addition, in some examples, the height of the protrusion of the strip 2212 may be less than or equal to the height of the other side of the base 221 where the clamping head 222 is not provided. Thus, the other side can be better matched, so that the base 221 is fixed to the fixing portion 13.

[0056] In some examples, the clamping head 222 of the clamping portion 22 may be disposed on the central axis of the base 221, and the width of the base 221 may be smaller than the width of the fixing portion 13. In other examples, the minimum width of the fixing portion 13 may be slightly larger than the width of the base 221. Thus, the weight of the fixing portion 13 may be reduced.

[0057] In some examples, the clamping portion 22 may include a boss 223 disposed between the clamping heads 222. Thus, a buffer can be provided when the catheter is clamped. In some examples, the height of the boss 223 can be less than the height of the clamping head 222. Further, the height of the boss 223 can be less than the height of the force application point of the clamping head 222. In other examples, the length of the boss 223 can be less than the length of the clamping foot of the clamping head 222. In addition, in some examples, the boss 223 can have a contact surface that matches the tube body of the catheter. Thus, the catheter can be supported more stably.

[0058] Figure 5 1 is a schematic structural diagram of a connection portion 23 of an isolation bag 20 of an intravascular ultrasound imaging system 1 with an isolation bag 20 according to an embodiment of the present disclosure. Figure 6 1 is a schematic diagram showing a cross-sectional structure of an isolation bag 20 of an intravascular ultrasound imaging system 1 with an isolation bag 20 according to an embodiment of the present disclosure.

[0059] In this embodiment, the connection part 23 may have a receiving hole 233 that passes through the bag body 21, and the receiving hole 233 is configured to have a size that can receive a catheter. The connection part 23 is installed on the assembly part 111, and the ultrasound catheter 2 cooperates with the withdrawal host 11 via the receiving hole 233. In addition, in some examples, the withdrawal host 11 can also cooperate with a pressure measurement catheter in an FFR measurement system or an optical detection catheter in optical coherence tomography through the receiving hole 233. Therefore, the withdrawal device 10 can be used in a variety of application scenarios.

[0060] In some examples, the connection portion 23 may be a clip that is detachably fixed to the bag body 21, and the clip is provided with protrusions (231, 232) that match the shape of the assembly portion 111. In some examples, the clip includes an inner clip and an outer clip. Specifically, the protrusions (231, 232) may be provided on the inner clip. In other examples, the protrusions (231, 232) may be provided on the outer clip, so as to pass through the inner clip and cooperate with the assembly portion 111. Thus, the clip can fix the isolation bag 20 between the clips in a clamping manner and assemble it on the assembly portion 111.

[0061] In some examples, the protrusions ( 231 , 232 ) of the connection portion 23 may partially present an annular protrusion 231 . Thus, the annular protrusion 231 may be disposed around the receiving hole 233 .

[0062] In some examples, the protrusions (231, 232) of the connection portion 23 may be provided with notches 2311, and the assembly portion 111 may be provided with positioning posts that match the notches 2311. Specifically, the notches 2311 may be provided on the portion of the annular protrusion 231. Thus, the assembly form of the connection portion 23 and the assembly portion 111 can be defined by the matching relationship between the notches 2311 and the positioning posts.

[0063] In some examples, the isolation bag 20 can be sleeved on the withdrawal main unit 11 and the support part, and used to isolate the ultrasound catheter 2 and the withdrawal device 10. In this way, the catheter and the withdrawal device 10 can be completely isolated. In other examples, the isolation bag 20 can be completely covered on the withdrawal main unit 11 and the support part, and has an opening for passing the signal line. In this case, the ultrasound catheter 2 and the withdrawal device 10 can be better isolated.

[0064] In other examples, the bag body 21 may be independent of the clamping portion 22 and the connecting portion 23. In this case, the bag body 21 may be wrapped around the retracting mainframe 11, whereby the clamping portion 22, the fixing portion 13 and the base plate 12 may be replaced as consumable equipment independent of the retracting mainframe 11, thereby improving the safety and reliability of the retracting device. In addition, in some examples, the isolation bag 20 may not have the connecting portion 23. In this case, the isolation bag 20 may directly receive the ultrasound catheter 2 through the receiving hole 233 that runs through the bag body 21.

[0065] In some examples, the bag body 21 may be combined with the clamping portion 22 and the connecting portion 23 only when in use. In other examples, the bag body 21 may have a mark for locating the combined position of the clamping portion 22 and the connecting portion 23. Thus, it is convenient for medical staff to combine the bag body 21 with the clamping portion 22 and the connecting portion 23 when in use.

[0066] Although the present disclosure is specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the present disclosure in any form. Those skilled in the art may modify and change the present disclosure as needed without departing from the essential spirit and scope of the present disclosure, and these modifications and changes all fall within the scope of the present invention.

Claims

1. An intravascular ultrasound imaging system with an isolation bag, characterized in that: include: An ultrasonic catheter having a transmission shaft and an ultrasonic probe connected to the transmission shaft; A retraction device, comprising a retraction main unit and a support portion carrying the retraction main unit, wherein the retraction main unit comprises an assembly portion connected to the ultrasound catheter, the support portion comprises a base plate carrying the retraction main unit and a fixing portion located on a side of the retraction main unit facing the ultrasound probe, the retraction main unit is mounted on the base plate and can slidably move along the length direction of the base plate, and the base plate is in the shape of an elongated plate; and An isolation bag comprises a bag body, and a clamping portion and a connecting portion arranged on the bag body, wherein the clamping portion has a base and a clamping head fixed to the base via the bag body, the base is mounted on the fixing portion, and the connecting portion has a receiving hole passing through the bag body, the receiving hole is configured to have a size that can receive the ultrasonic catheter, the connecting portion is mounted on the assembly portion, and the ultrasonic catheter cooperates with the withdrawal host via the receiving hole.

2. The intravascular ultrasound imaging system according to claim 1, characterized in that: A predetermined distance is provided between any point on the clamping portion close to one side of the connecting portion and any point on the connecting portion close to one side of the clamping portion.

3. The intravascular ultrasound imaging system according to claim 1, characterized in that: The connecting portion is a clip that is detachably fixed to the bag body, and the clip is provided with a protrusion that matches the shape of the assembly portion.

4. The intravascular ultrasound imaging system according to claim 3, characterized in that: The protrusion of the connecting portion is provided with a notch, and the assembling portion is provided with a positioning column matched with the notch.

5. The intravascular ultrasound imaging system according to claim 1, characterized in that: The clamping portion includes the clamping head disposed on the base toward the outside, and the clamping portion also includes a protrusion disposed on the base toward the inside.

6. The intravascular ultrasound imaging system according to claim 5, characterized in that: The width of the fixing portion gradually decreases from one end close to the supporting portion to one end far away from the supporting portion, and the fixing portion has a groove matched with the protrusion of the clamping portion.

7. The intravascular ultrasound imaging system according to claim 1, characterized in that: The isolation bag is sleeved on the withdrawal main unit and the support portion, and is used to isolate the ultrasonic catheter from the withdrawal device.

8. The intravascular ultrasound imaging system according to claim 1, characterized in that: The base also includes a strip arranged at the side where the clamping head is located and arranged along the opposite direction to which the clamping head is facing.

9. The intravascular ultrasound imaging system according to claim 1, characterized in that: The clamping head of the clamping portion is arranged on the central axis of the base, and the width of the base is smaller than the width of the fixing portion.

10. The intravascular ultrasound imaging system according to claim 1, characterized in that: The clamping portion further includes a boss disposed between the clamping heads.

Images