Medical catheter device for vascular surgery

Abstract

The invention belongs to the technical field of medical catheter devices, and particularly relates to a medical catheter device for vascular surgery, which comprises a catheter body and a guide wire joint, a head sleeve and a forward ultrasonic probe assembly are fixedly mounted between the catheter body and the guide wire joint, and an annular ultrasonic probe structure is fixedly mounted in the head sleeve. The movable probe moves outwards in the arc-shaped open groove, at the moment, the movable probe of the cap can conduct ultrasonic imaging on the forward position facing the guide wire connector, then the structure and form information of the lesion are judged, follow-up treatment is facilitated, the movable probe is ejected outwards, and at the moment, the position of the catheter is fixed; the problem that the movable probe scratches the interior of a blood vessel is avoided, the movable probe which is slightly ejected out can carry out forward ultrasonic imaging and cannot jack the interior of the blood vessel, and after the shape and the structure of a lesion are observed, the movable probe retracts into the arc-shaped open groove, and retraction of the catheter body is not affected.

Description

Technical Field

[0001] The present invention belongs to the field of medical catheter devices, and specifically relates to a medical catheter device for vascular surgery. Background Art

[0002] Intravascular ultrasound in coronary arteries usually requires the use of a medical catheter to provide guidance in coronary intervention, understand the coronary stenosis plaque burden, blood vessel inner diameter, etc. Its general working principle is that first, a guide wire is passed through the lesion site, and then the catheter and the ultrasound probe inside the catheter are sent in for cross-sectional scanning of each layer. Generally, there are two modes. One is annular phased ultrasound real-time imaging, and the other is that a single ultrasound probe rotates for imaging. Information is collected by observing the blood vessel diameter and the structure and shape of the blood vessel lesion for treatment.

[0003] A patent document with the publication number CN110292702B discloses a medical catheter with an adjustable ultrasound probe and a sealing balloon, including a tube body. In the present invention, a primary guiding head is sleeved on the tube body, a sliding cavity is circumferentially opened in the inner circumference of the primary guiding head, and an ultrasound probe installed on a sliding rod by an automatic push rod performs a stable telescopic movement in the sliding cavity, which not only helps to comprehensively observe the blood vessel condition, but also can accommodate the ultrasound probe according to the movement condition, reducing the direct contact between the ultrasound probe and the blood vessel, thereby avoiding unnecessary wear and damage.

[0004] In the traditional technology, annular ultrasound imaging is performed on the blood vessel diameter and the structure and shape of the blood vessel lesion through the ultrasound probe inside the medical catheter, and then lesion information is obtained according to the imaging content. However, this traditional technology requires a prerequisite that the guide wire first passes through the lesion site, and then the ultrasound probe inside the catheter following the guide wire can perform annular imaging for information collection when passing through the lesion site. However, in some cases, it is difficult for the guide wire to pass through the lesion site. At this time, it is difficult for the ultrasound probe inside the catheter to perform annular ultrasound imaging on the lesion site, and it is not easy to judge the nature of the lesion and generally understand the structure and shape of the lesion.

[0005] Therefore, the present invention provides a medical catheter device for vascular surgery. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A medical catheter device for vascular surgery described in the present invention includes a catheter body. A pipe joint is installed on the outer side of one end of the catheter body close to the power supply medical instrument. A guide wire joint is installed at the other end of the catheter body, and the guide wire joint is used to connect with a guide wire. A head sleeve and a forward ultrasonic probe assembly are fixedly installed between the catheter body and the guide wire joint. An annular ultrasonic probe structure is fixedly installed inside the head sleeve. The head sleeve is connected to the catheter body. A movable probe is installed inside the forward ultrasonic probe assembly, and the forward ultrasonic probe assembly is connected to the guide wire joint; The forward ultrasonic probe assembly includes a structural housing and an arc-shaped slot opened on the outer side of the structural housing. A movable probe is movably installed inside the arc-shaped slot. The interior of the structural housing is hollow, and a bending support tube is movably installed inside the catheter body.

[0008] Preferably, an inner cavity is penetrated and opened inside the structural housing. The inner cavity is communicated with the arc-shaped slot. The movable probe is movably installed inside the inner cavity and the arc-shaped slot, and the outer end of the movable probe is arc-shaped. The arc-shaped end of the movable probe is consistent with the outer arc of the structural housing.

[0009] Preferably, the movable probe includes a probe housing and a plate-type ultrasonic probe fixedly installed inside the probe housing. The probe housing and the catheter body are made of the same material. A connecting membrane is fixedly installed on the outer side of one end of the probe housing inside the inner cavity. One end of the connecting membrane is connected to the inner bottom of the arc-shaped slot. Through the settings of the connecting membrane and the probe housing, the interior of the inner cavity is in a sealed state. A plurality of micro transducers are installed on the outer side of the outer end of the plate-type ultrasonic probe, and the plurality of micro transducers form an array.

[0010] Preferably, a U-shaped support block is fixedly installed inside the inner cavity, and the U-shaped support block is spaced from the probe housing by a certain distance.

[0011] Preferably, the bending support tube includes a catheter outer shell, an inner tube installed inside the catheter outer shell, and a plurality of in-tube wires. A first metal wire is installed inside the inner tube. One end of the first metal wire penetrates through the annular ultrasonic probe structure, the head sleeve, and the U-shaped support block and is connected to one end of the probe housing inside the inner cavity.

[0012] Preferably, a component groove is opened on the outer side of one end of the catheter body. The component groove is communicated with the inner tube. A second metal wire is installed inside the component groove, and the second metal wire is connected to the first metal wire.

[0013] Preferably, a moving ring is movably installed on the outer side of one end of the catheter body, and one end of the second metal wire is fixedly installed on the outer side of the moving ring.

[0014] Preferably, a connection hole is formed inside the guide wire connector. The connection hole is used to connect with the guide wire. A cavity tube is fixedly installed between the guide wire connector and the forward ultrasonic probe assembly, and the inside of the cavity tube is hollow.

[0015] Preferably, the annular ultrasonic probe structure includes a first fixing block fixedly installed at one end of the head sleeve and a second fixing block fixedly installed at the other end of the head sleeve. A second fixing block and an arc-shaped connecting block are installed between the first fixing block and the second fixing block. The arc-shaped connecting block is located outside the annular ultrasonic probe body. The first metal wire passes through the second fixing block, the annular ultrasonic probe body, the first fixing block, and the U-shaped support block and is connected to one end of the probe housing. A plurality of micro transducer elements are annularly and arrayedly installed on the outside of the annular ultrasonic probe body.

[0016] Preferably, one end of the in-tube wire corresponding to the above-mentioned passes through the second fixing block, the annular ultrasonic probe body, and the first fixing block and is installed inside the U-shaped support block. The plate-type ultrasonic probe is connected to the corresponding in-tube wire through positive and negative wires.

[0017] The beneficial effects of the present invention are as follows: 1. For the medical catheter device for vascular surgery described in the present invention, the mobile probe moves outward in the arc-shaped slot by means of air pushing or power pushing, that is, it is not hidden inside the arc-shaped slot. At this time, the protruding mobile probe can perform ultrasonic imaging on the forward position facing the guide wire connector, thereby judging the structure and morphological information of the lesion, which is beneficial to subsequent treatment. The movement of the mobile probe is to push outwards, and at this time, the position of the catheter is fixed, and there will be no problem that the mobile probe scratches the inside of the blood vessel. The slightly protruding mobile probe can perform forward ultrasonic imaging and will not damage the inside of the blood vessel. After observing the shape and structure of the lesion, the mobile probe retracts into the arc-shaped slot, without affecting the retraction of the catheter body.

[0018] 2. For the medical catheter device for vascular surgery described in the present invention, by acting on one end of the first metal wire extending to the outside of the catheter body, one end of the first metal wire inside the inner cavity is no longer taut. Because the air pressure inside the inner cavity is greater than the blood vessel internal pressure, at this time, under the action of the air pressure inside the inner cavity, the mobile probe is pushed to move outward from its initial position inside the arc-shaped slot. At this time, the connecting membrane deforms to maintain the sealed environment of the inner cavity. When it is necessary to let the mobile probe return to its initial position, by pulling one end of the first metal wire extending to the outside of the catheter body, the first metal wire inside the inner cavity is tightened, and at this time, the mobile probe returns to its initial position, without affecting the normal use of the catheter body.

[0019] 3. The medical catheter device for vascular surgery according to the present invention drives the first wire to move by acting on the second wire, thereby changing the straightening state of the first wire inside the inner cavity. A moving ring is movably arranged on the outer side of the catheter body. The catheter body is close to the medical instrument, and the part of the catheter body inside the moving ring is a rigid material structure. At this time, by precisely moving the moving ring on the outer side of this part, the second wire and the first wire are controlled, so as to achieve the purpose of controlling the forward ultrasonic imaging of the mobile probe. The structure for controlling imaging is arranged outside the human body, which is convenient for control and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the three-dimensional schematic diagram of the head sleeve and the annular ultrasonic probe structure in the present invention; Figure 3 is the three-dimensional schematic diagram of the forward ultrasonic probe assembly in the present invention; Figure 4 is the three-dimensional schematic diagram of the bending support tube in the present invention; Figure 5 is the disassembled three-dimensional schematic diagram of the forward ultrasonic probe assembly in the present invention; Figure 6 is the three-dimensional schematic diagram of the annular ultrasonic probe structure in the present invention; Figure 7 is the cross-sectional schematic diagram of the bending support tube in the present invention; Figure 8 is the three-dimensional schematic diagram of the moving ring in the present invention.

[0022] In the figure: 1. Catheter body; 11. Component groove; 12. Second wire; 13. Moving ring; 2. Tube joint; 3. Guide wire joint; 31. Connecting hole; 32. Cavity tube; 4. Head sleeve; 5. Annular ultrasonic probe structure; 51. Annular ultrasonic probe body; 52. First fixing block; 53. Second fixing block; 54. Arc connecting block; 6. Bending support tube; 61. Catheter outer shell; 62. Inner tube; 63. First wire; 64. Inner tube wire; 7. Forward ultrasonic probe assembly; 71. Arc-shaped slot; 72. Mobile probe; 721. Probe outer shell; 722. Plate-type ultrasonic probe; 73. Inner cavity; 731. Connecting membrane; 74. U-shaped support block; 75. Structure outer shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0024] Example 1: AsFigures 1-5 As shown in the figure, a medical catheter device for vascular surgery according to an embodiment of the present invention includes a catheter body 1. A catheter joint 2 is installed on the outer side of one end of the catheter body 1 close to the power supply medical instrument. A guide wire joint 3 is installed at the other end of the catheter body 1. The guide wire joint 3 is used to connect with a guide wire. A head sleeve 4 and a forward ultrasonic probe assembly 7 are fixedly installed between the catheter body 1 and the guide wire joint 3. An annular ultrasonic probe structure 5 is fixedly installed inside the head sleeve 4. The head sleeve 4 is connected to the catheter body 1. A movable probe 72 is installed inside the forward ultrasonic probe assembly 7. The forward ultrasonic probe assembly 7 is connected to the guide wire joint 3; The forward ultrasonic probe assembly 7 includes a structural housing 75 and an arc-shaped slot 71 opened on the outer side of the structural housing 75. The movable probe 72 is movably installed inside the arc-shaped slot 71. The inside of the structural housing 75 is hollow. A bending support tube 6 is movably installed inside the catheter body 1.

[0025] Specifically, when the guide wire is connected to the guide wire joint 3, the guide wire is first introduced into the patient's blood vessel. The guide wire can move inside the blood vessel until it moves to a more blocked lesion site. At this time, the catheter body 1 can move inside the blood vessel according to the guidance of the guide wire. At this time, the annular ultrasonic probe structure 5 performs a circular 360° cross-sectional morphology and ultrasonic imaging of each tomographic section of the passing blood vessel. When the guide wire passes through the lesion site, more parts of the catheter body 1 enter and move inside the blood vessel following the guiding position of the guide wire until it passes through the lesion site. At this time, the annular ultrasonic probe structure 5 performs circular ultrasonic imaging of the lesion site to complete information collection and lesion judgment. When the guide wire cannot pass through the lesion site, the catheter cannot follow the guide wire through the lesion site, that is, it cannot perform circular imaging of the lesion structure, which increases the treatment difficulty. Moreover, the annular ultrasonic probe structure 5 cannot perform forward ultrasonic imaging, so that the entry of this catheter cannot obtain the structural and morphological information of the lesion site, which is not conducive to treatment. At this time, due to the presence of the forward ultrasonic probe assembly 7, the movable probe 72 can be moved outwards in the arc-shaped slot 71 by air pushing or power pushing, that is, it is not hidden inside the arc-shaped slot 71. At this time, the protruding movable probe 72 can perform ultrasonic imaging on the forward position facing the guide wire joint 3, thereby judging the structural and morphological information of the lesion, which is beneficial to subsequent treatment. The movement of the movable probe 72 is to push outwards, and at this time, the position of the catheter is fixed, and there will be no problem that the movable probe 72 scratches the inside of the blood vessel. The slightly protruding movable probe 72 can perform forward ultrasonic imaging and will not damage the inside of the blood vessel. After observing the shape and structure of the lesion, the movable probe 72 retracts into the arc-shaped slot 71 without affecting the retraction of the catheter body 1.

[0026] Such as Figures 3-5 and Figure 7As shown, an inner cavity 73 is formed through the interior of the structural housing 75. The inner cavity 73 communicates with the arc-shaped slot 71. The mobile probe 72 is movably installed inside the inner cavity 73 and the arc-shaped slot 71. The outer end of the mobile probe 72 is arc-shaped, and the arc-shaped end of the mobile probe 72 is consistent with the outer arc of the structural housing 75.

[0027] The mobile probe 72 includes a probe housing 721 and a plate-type ultrasonic probe 722 fixedly installed inside the probe housing 721. The probe housing 721 is made of the same material as the catheter body 1. A connecting film 731 is fixedly installed on the outer side of one end of the probe housing 721 inside the inner cavity 73. One end of the connecting film 731 is connected to the inner bottom of the arc-shaped slot 71. Through the arrangement of the connecting film 731 and the probe housing 721, the interior of the inner cavity 73 is in a sealed state. A plurality of micro transducers are installed on the outer side of the outer end of the plate-type ultrasonic probe 722, and the plurality of micro transducers form an array.

[0028] A U-shaped support block 74 is fixedly installed inside the inner cavity 73, and the U-shaped support block 74 is spaced from the probe housing 721 by a certain distance.

[0029] The bending support tube 6 includes a catheter outer shell 61, an inner tube 62 installed inside the catheter outer shell 61, and a plurality of in-tube wires 64. A first metal wire 63 is installed inside the inner tube 62. One end of the first metal wire 63 passes through the annular ultrasonic probe structure 5, the head sleeve 4, and the U-shaped support block 74 and is connected to one end of the probe housing 721 inside the inner cavity 73.

[0030] Specifically, the diameter of the bent support tube 6 is the same as the inner diameter of the catheter body 1. The bent support tube 6 is bendable, enabling the catheter body 1 to bend and move inside the blood vessel. Both the annular ultrasonic probe structure 5 and the plate-type ultrasonic probe 722 are electrically connected to external medical instruments through corresponding multiple in-tube wires 64, and the imaging functions of the annular ultrasonic probe structure 5 or the plate-type ultrasonic probe 722 can be controlled independently. The inner cavity 73 is filled with gas, and due to the connection film 731 and the probe housing 721, the inner cavity 73 forms a sealed space. When the wire 63 is straightened, the internal air pressure in the inner cavity 73 will not drive the mobile probe 72 to move. When the guide wire cannot pass through the diseased area, that is, when the annular ultrasonic probe structure 5 cannot perform annular imaging on the shape and structure of the lesion, by acting on one end of the wire 63 extending outside the catheter body 1, one end of the wire 63 inside the inner cavity 73 is no longer taut. Since the internal air pressure in the inner cavity 73 is greater than the blood vessel internal pressure, at this time, under the action of the internal air pressure in the inner cavity 73, the mobile probe 72 is pushed to move outward from its initial position inside the arc-shaped slot 71. At this time, the connection film 731 deforms to maintain the sealed environment of the inner cavity 73. When it is necessary to restore the mobile probe 72 to its initial position, by pulling one end of the wire 63 extending outside the catheter body 1, the wire 63 inside the inner cavity 73 is tightened, and at this time, the mobile probe 72 returns to its initial position without affecting the normal use of the catheter body 1.

[0031] As Figure 8 shown, a component groove 11 is provided on the outer side of one end of the catheter body 1. The component groove 11 communicates with the inner tube 62. A wire 12 is installed inside the component groove 11. The wire 12 is connected to the wire 63. A moving ring 13 is movably installed on the outer side of one end of the catheter body 1. One end of the wire 12 is fixedly installed on the outer side of the moving ring 13.

[0032] Specifically, when it is necessary to change the position of the mobile probe 72, the wire 63 can be driven to move by acting on the wire 12, thereby changing the straightening state of the wire 63 inside the inner cavity 73. A moving ring 13 is movably provided on the outer side of the catheter body 1. The catheter body 1 is close to the medical instrument, and the part of the catheter body 1 inside the moving ring 13 is of a rigid material structure. At this time, by precisely moving the moving ring 13 on the outer side of this part, the wire 12 and the wire 63 can be controlled, thereby achieving the purpose of controlling the forward ultrasonic imaging of the mobile probe 72. The structure for controlling imaging is arranged outside the human body, which is convenient for control and adjustment.

[0033] As Figure 2As shown, a connection hole 31 is provided inside the guide wire connector 3. The connection hole 31 is used to connect with the guide wire. A cavity tube 32 is fixedly installed between the guide wire connector 3 and the forward ultrasonic probe assembly 7, and the cavity tube 32 is hollow inside.

[0034] Specifically, the hollow setting of the cavity tube 32 can prevent interference with ultrasonic signals and affect the imaging quality. It can also reduce the absorption and scattering of ultrasonic signals by the guide wire, thereby improving the clarity and accuracy of imaging.

[0035] As Figures 6-7 shown, the annular ultrasonic probe structure 5 includes a first fixing block 52 fixedly installed at one end of the head sleeve 4 and a second fixing block 53 fixedly installed at the other end of the head sleeve 4. A second fixing block 53 and an arc-shaped connecting block 54 are installed between the first fixing block 52 and the second fixing block 53. The arc-shaped connecting block 54 is located outside the annular ultrasonic probe body 51. A first metal wire 63 passes through the second fixing block 53, the annular ultrasonic probe body 51, the first fixing block 52, and the U-shaped support block 74 and is connected to one end of the probe housing 721. A plurality of micro transducer elements are annularly and arrayedly installed on the outside of the annular ultrasonic probe body 51.

[0036] One end of the corresponding in-tube wire 64 passes through the second fixing block 53, the annular ultrasonic probe body 51, and the first fixing block 52 and is installed inside the U-shaped support block 74. The plate-type ultrasonic probe 722 is connected to the corresponding in-tube wire 64 through positive and negative wires.

[0037] Working principle: The guide wire is connected to the guide wire connector 3. First, the guide wire is inserted into the patient's blood vessel. The guide wire can move inside the blood vessel until it reaches a more blocked lesion site. At this time, the catheter body 1 can move inside the blood vessel according to the guidance of the guide wire. At this time, the annular ultrasonic probe structure 5 performs annular 360° cross-sectional morphology and each tomographic cross-section scanning on the passing blood vessel for ultrasonic imaging. When the guide wire passes through the lesion site, more parts of the catheter body 1 enter and move inside the blood vessel following the guiding position of the guide wire until it passes through the lesion site. At this time, the annular ultrasonic probe structure 5 performs annular ultrasonic imaging on the lesion site to complete information collection and lesion judgment. When the guide wire cannot pass through the lesion site, the catheter cannot follow the guide wire through the lesion site, that is, it cannot perform annular imaging on the lesion structure, which increases the treatment difficulty. Moreover, the annular ultrasonic probe structure 5 cannot perform forward ultrasonic imaging, so the entry of this catheter cannot obtain the information on the structure and morphology of the lesion site, which is not conducive to treatment. At this time, due to the existence of the forward ultrasonic probe assembly 7, the mobile probe 72 can move outwards in the arc-shaped slot 71 by means of air pushing or power pushing, that is, it is not hidden inside the arc-shaped slot 71. At this time, the protruding mobile probe 72 can perform ultrasonic imaging on the forward position facing the guide wire connector 3, thereby judging the structure and morphology information of the lesion, which is beneficial to subsequent treatment. The movement of the mobile probe 72 is to eject outwards, and at this time, the position of the catheter is fixed, and there will be no problem of the mobile probe 72 scratching the inside of the blood vessel. The slightly ejected mobile probe 72 can perform forward ultrasonic imaging and will not damage the inside of the blood vessel. After observing the shape and structure of the lesion, the mobile probe 72 retracts into the arc-shaped slot 71 without affecting the retraction of the catheter body 1.

[0038] The diameter of the bent support tube 6 is consistent with the inner diameter of the catheter body 1. The bent support tube 6 is bendable, enabling the catheter body 1 to bend and move inside the blood vessel. The annular ultrasonic probe structure 5 and the plate ultrasonic probe 722 are both electrically connected to external medical instruments through corresponding multiple in-tube wires 64, and the imaging functions of the annular ultrasonic probe structure 5 or the plate ultrasonic probe 722 are controlled separately. The inner cavity 73 is filled with gas, and the inner cavity 73 is a sealed space due to the connection film 731 and the probe housing 721. When the first metal wire 63 is straightened, the internal air pressure in the inner cavity 73 will not drive the movable probe 72 to move. When the guide wire cannot pass through the diseased area, that is, when the annular ultrasonic probe structure 5 cannot perform annular imaging on the shape and structure of the lesion, by acting on one end of the first metal wire 63 extending outside the catheter body 1, the end of the first metal wire 63 inside the inner cavity 73 is no longer taut. Since the internal air pressure in the inner cavity 73 is greater than the blood vessel internal pressure, at this time, under the action of the internal air pressure in the inner cavity 73, the movable probe 72 is pushed to move outward from the initial position inside the arc-shaped slot 71. At this time, the connection film 731 deforms to maintain the sealed environment of the inner cavity 73. When it is necessary to let the movable probe 72 return to the initial position, by pulling one end of the first metal wire 63 extending outside the catheter body 1, the first metal wire 63 inside the inner cavity 73 is tightened, and at this time, the movable probe 72 returns to the initial position, without affecting the normal use of the catheter body 1.

[0039] 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical catheter device for vascular surgery, comprising a catheter body (1), a tube connector (2) is installed on the outer side of one end of the catheter body (1) close to a power supply medical instrument, a guide wire connector (3) is installed at the other end of the catheter body (1), and the guide wire connector (3) is used for connecting with a guide wire, characterized in that: A head sleeve (4) and a forward ultrasonic probe assembly (7) are fixedly installed between the catheter body (1) and the guide wire connector (3). An annular ultrasonic probe structure (5) is fixedly installed inside the head sleeve (4). The head sleeve (4) is connected to the catheter body (1). A movable probe (72) is installed inside the forward ultrasonic probe assembly (7). The forward ultrasonic probe assembly (7) is connected to the guide wire connector (3). The forward ultrasonic probe assembly (7) includes a structural housing (75) and an arc-shaped slot (71) opened on the outer side of the structural housing (75). The movable probe (72) is movably installed inside the arc-shaped slot (71). The interior of the structural housing (75) is hollow. A bending support tube (6) is movably installed inside the catheter body (1).

2. The medical catheter device for vascular surgery according to claim 1, wherein: An inner cavity (73) is penetrated and opened inside the structural housing (75). The inner cavity (73) communicates with the arc-shaped slot (71). The movable probe (72) is movably installed inside the inner cavity (73) and the arc-shaped slot (71). The outer end of the movable probe (72) is arc-shaped. The arc-shaped end of the movable probe (72) is consistent with the outer arc of the structural housing (75).

3. The medical catheter device for vascular surgery according to claim 2, wherein: The movable probe (72) includes a probe housing (721) and a plate-type ultrasonic probe (722) fixedly installed inside the probe housing (721). The probe housing (721) and the catheter body (1) are made of the same material. A connecting membrane (731) is fixedly installed on the outer side of one end of the probe housing (721) inside the inner cavity (73). One end of the connecting membrane (731) is connected to the inner bottom of the arc-shaped slot (71). Through the settings of the connecting membrane (731) and the probe housing (721), the interior of the inner cavity (73) is in a sealed state. A plurality of micro transducers are installed on the outer side of the outer end of the plate-type ultrasonic probe (722), and the plurality of micro transducers form an array.

4. The medical catheter device for vascular surgery according to claim 3, wherein: A U-shaped support block (74) is fixedly installed inside the inner cavity (73). The U-shaped support block (74) is spaced from the probe housing (721) by a certain distance.

5. The medical catheter device for vascular surgery according to claim 4, wherein: The bending support tube (6) includes a catheter outer shell (61), an inner tube (62) installed inside the catheter outer shell (61), and a plurality of in-tube wires (64). A first metal wire (63) is installed inside the inner tube (62). One end of the first metal wire (63) penetrates through the annular ultrasonic probe structure (5), the head sleeve (4), and the U-shaped support block (74) and is connected to one end of the probe housing (721) inside the inner cavity (73).

6. The medical catheter device for vascular surgery according to claim 5, characterized in that: A component groove (11) is opened on the outer side of one end of the catheter body (1). The component groove (11) communicates with the inner tube (62). A second metal wire (12) is installed inside the component groove (11). The second metal wire (12) is connected to the first metal wire (63).

7. The medical catheter device for vascular surgery according to claim 6, characterized in that: A moving ring (13) is movably installed on the outer side of one end of the catheter body (1). One end of the second metal wire (12) is fixedly installed on the outer side of the moving ring (13).

8. The medical catheter device for vascular surgery according to claim 1, characterized in that: The inside of the guide wire connector (3) is provided with a connection hole (31) for connecting with the guide wire. A cavity tube (32) is fixedly installed between the guide wire connector (3) and the forward ultrasonic probe assembly (7), and the inside of the cavity tube (32) is hollow.

9. The medical catheter device for vascular surgery according to claim 5, characterized in that: The annular ultrasonic probe structure (5) includes a first fixing block (52) fixedly installed at one end of the head sleeve (4) and a second fixing block (53) fixedly installed at the other end of the head sleeve (4). A second fixing block (53) and an arc-shaped connecting block (54) are installed between the first fixing block (52) and the second fixing block (53). The arc-shaped connecting block (54) is located outside the annular ultrasonic probe body (51). The first metal wire (63) passes through the second fixing block (53), the annular ultrasonic probe body (51), the first fixing block (52), and the U-shaped support block (74) to be connected to one end of the probe housing (721). A plurality of micro transducer elements are annularly and arrayedly installed on the outside of the annular ultrasonic probe body (51).

10. The medical catheter device for vascular surgery according to claim 9, characterized in that: One end of the corresponding in-tube wire (64) passes through the second fixing block (53), the annular ultrasonic probe body (51), and the first fixing block (52) and is installed inside the U-shaped support block (74). The plate-type ultrasonic probe (722) is connected to the corresponding in-tube wire (64) through positive and negative wires.

Images