Intravascular ultrasound device that adjusts the probe direction to accurately open vascular occlusive lesions

Abstract

The present invention discloses an intravascular ultrasound device for accurately opening vascular occlusive lesions by adjusting the direction of a probe, and relates to the field of medical assistance, including a display mechanism, a connection mechanism is arranged at the front end of the display mechanism, an ultrasound observation device is arranged at one end of the connection mechanism away from the display mechanism, a guide wire integration mechanism is arranged at one end of the ultrasound observation device away from the connection mechanism, the display mechanism includes a display host, a display screen bracket is arranged at the top of the display host, an observation display screen is arranged at one end of the display screen bracket away from the display host, the connection mechanism includes a connection shell, a connection signal transmission mechanism is arranged at the inner side of the connection shell, and a connection signal access mechanism is arranged at the rear end of the connection signal transmission mechanism; at the same time, when the present invention is used, a guide wire guide tube is provided to ensure that the guide wire is in the vascular cavity. It is continuously sent forward and the position of the head end is continuously adjusted to ensure that the guide wire is always in the lumen. The success rate of the operation is improved and the risk of surgical complications is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical assistance, and in particular to an intravascular ultrasound device for accurately opening vascular occlusive lesions by adjusting the direction of a probe. Background Art

[0002] Intravascular ultrasound refers to a medical imaging technology that combines non-invasive ultrasound technology with invasive catheter technology, using a special catheter with an ultrasound probe connected to the end. Intravascular ultrasound is a method of placing a miniaturized ultrasound transducer into the cardiovascular cavity through a cardiac catheter to display the cross-sectional morphology of the cardiovascular system and / or blood flow patterns, mainly including ultrasound imaging technology and Doppler blood flow measurement. This technology allows ultrasound technology, such as piezoelectric conduction or ultrasound sensors, to be used to examine the condition of the inner wall of the blood vessel.

[0003] Chronic occlusive lesions of the coronary arteries (peripheral arteries) have always been a difficult point in clinical interventional treatment due to their low surgical success rate and high incidence of complications. In occlusive lesions, the use of special guide wires with softer tips often makes it difficult to pass through the occluded segment, resulting in a low surgical success rate and easily causing complications such as vascular dissection and vascular rupture; the use of special guide wires with harder tips can puncture the occluded plaque, but since the guide wire tip cannot be guaranteed to always be in the true lumen of the blood vessel during the forward delivery process, the incidence of high-risk complications such as vascular dissection and vascular rupture remains high, ultimately leading to surgical failure. In the prior art, the surgical treatment positions are different according to the different layers of the blood vessels. Failure to accurately locate the problem site will affect the success rate of the operation and there will be a risk of surgical complications. Summary of the invention

[0004] In order to solve the deficiencies mentioned in the above-mentioned background technology, the purpose of the present invention is to provide an intravascular ultrasound device that can adjust the direction of the probe to accurately open vascular occlusive lesions. The present invention aims to accurately locate the problem area through the position of the guide wire tip, thereby improving the success rate of the operation and reducing the risk of surgical complications.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An intravascular ultrasound device for accurately opening vascular occlusive lesions by adjusting the direction of a probe includes a display mechanism, a connecting mechanism is provided at the front end of the display mechanism, an ultrasound observation device is provided at one end of the connecting mechanism away from the display mechanism, and a guidewire integration mechanism is provided at one end of the ultrasound observation device away from the connecting mechanism.

[0007] Furthermore, the display mechanism includes a display host, a display screen bracket is arranged on the top of the display host, an observation display screen is arranged at the end of the display screen bracket away from the display host, a display base is arranged at the bottom of the display host, an observation connecting pipe is arranged at the rear end of the display host, and a control panel is arranged at the top of the display host at the front end of the observation display screen.

[0008] Furthermore, the connection mechanism includes a connection shell, a connection signal transmission mechanism is arranged inside the connection shell, a connection signal access mechanism is arranged at the rear end of the connection signal transmission mechanism, and a signal access transmission connection port is arranged at the rear end of the connection signal access mechanism.

[0009] Furthermore, the ultrasonic observation device includes a single-lumen micro-guidewire access tube, a signal access tube is arranged inside the single-lumen micro-guidewire access tube, a single-lumen micro-catheter is arranged inside the signal access tube, an ultrasonic observation probe is arranged at one end of the single-lumen micro-catheter away from the display mechanism, an ultrasonic emission port is arranged at the top of the ultrasonic observation probe, and a guidewire guiding substrate is arranged at the top of the signal access tube.

[0010] Furthermore, the guidewire integration mechanism includes a guidewire support frame, the bottom end of the guidewire support frame is fixedly connected to the top of the guidewire guide substrate, the top of the guidewire support frame is movably connected with a guidewire steering transmission gear, the outer side of the guidewire steering transmission gear is toothed with a driving gear, the rear end of the driving gear is connected with a driving core, the end of the driving core away from the driving gear is fixedly connected with a driving signal core, the bottom end of the driving signal core is fixedly connected to the top of the guidewire guide substrate, the inner side of the guidewire steering transmission gear is fixedly connected with a guidewire guide tube, the end of the guidewire guide tube close to the ultrasonic observation probe is connected to the guidewire control end, the end of the guidewire guide tube away from the guidewire control end is fixedly connected with a guidewire access port, the outer side of the guidewire access port is movably connected with a guidewire access auxiliary mechanism, a section of the guidewire guide tube connected to the guidewire access port passes through a partial connecting hole opened at the top of the single-lumen micro-guidewire access tube, so that the guidewire steering transmission gear can be flipped within a limited range with the cooperation of the toothed section inside the single-lumen micro-guidewire access tube.

[0011] Beneficial effects of the present invention:

[0012] The present invention is provided with a guide wire guide tube to ensure that the guide wire is in the blood vessel cavity, and continuously advances and continuously adjusts the position of the head end to ensure that the guide wire is always in the lumen, thereby improving the success rate of the operation and reducing the risk of surgical complications.

[0013] Extending the original track has the following advantages: 1. The diameter of the catheter is not increased to ensure that the catheter can be used in the coronary artery; 2. It is easy to implement and does not damage the transmission line of the ultrasound catheter. Instead of simply combining the ultrasound catheter with the single-lumen microcatheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a partial structural schematic diagram of the present invention;

[0017] Figure 3 It is a partial structural schematic diagram of the present invention;

[0018] Figure 4 It is a partial structural schematic diagram of the present invention;

[0019] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0020] In the figure: 1. display mechanism; 11. display host; 12. display screen bracket; 13. observation display screen; 14. display base; 15. observation connection tube; 16. control panel; 2. connection mechanism; 21. connection shell; 22. connection signal transmission mechanism; 23. connection signal access mechanism; 24. signal access transmission connection port; 3. ultrasonic observation device; 31. single-lumen micro-guidewire access tube; 32. signal access tube; 33. single-lumen micro-catheter; 34. ultrasonic observation probe; 35. ultrasonic emission port; 36. guidewire guiding substrate; 4. guidewire integration mechanism; 41. guidewire support frame; 42. guidewire steering transmission gear; 43. drive gear; 44. drive core; 45. drive signal core; 46. guidewire guiding tube; 47. guidewire control end; 48. guidewire access port; 49. guidewire access auxiliary mechanism. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] An intravascular ultrasound device that adjusts the probe direction to accurately open vascular occlusive lesions, such as Figure 1 As shown, a connecting mechanism 2 is provided at the front end of the display mechanism 1 , an ultrasonic observation device 3 is provided at one end of the connecting mechanism 2 away from the display mechanism 1 , and a guide wire integration mechanism 4 is provided at one end of the ultrasonic observation device 3 away from the connecting mechanism 2 .

[0024] like Figure 2 and 3As shown, the display mechanism 1 includes a display host 11, a display screen bracket 12 is arranged on the top of the display host 11, an observation display screen 13 is arranged at the end of the display screen bracket 12 away from the display host 11, a display base 14 is arranged at the bottom of the display host 11, an observation connecting tube 15 is arranged at the rear end of the display host 11, and a control panel 16 is arranged at the top of the display host 11 at the front end of the observation display screen 13.

[0025] The connection mechanism 2 comprises a connection shell 21 , inside which a connection signal transmission mechanism 22 is arranged, at the rear end of which a connection signal access mechanism 23 is arranged, and at the rear end of which a signal access transmission connection port 24 is arranged.

[0026] like Figure 4 As shown, the ultrasonic observation device 3 includes a single-lumen micro-guidewire access tube 31, a signal access tube 32 is arranged inside the single-lumen micro-guidewire access tube 31, a single-lumen micro-catheter 33 is arranged inside the signal access tube 32, an ultrasonic observation probe 34 is arranged at one end of the single-lumen micro-catheter 33 away from the display mechanism 1, an ultrasonic emission port 35 is arranged at the top of the ultrasonic observation probe 34, and a guidewire guiding substrate 36 is arranged at the top of the signal access tube 32.

[0027] like Figure 5 As shown, the guidewire integration mechanism 4 includes a guidewire support frame 41, the bottom end of the guidewire support frame 41 is fixedly connected to the top of the guidewire guide substrate 36, the top of the guidewire support frame 41 is movably connected to a guidewire steering transmission gear 42, the outer side of the guidewire steering transmission gear 42 is toothed with a driving gear 43, the rear end of the driving gear 43 is connected to a driving core 44, the end of the driving core 44 away from the driving gear 43 is fixedly connected to a driving signal core 45, the bottom end of the driving signal core 45 is fixedly connected to the top of the guidewire guide substrate 36, and the inner side of the guidewire steering transmission gear 42 is fixedly connected to A guidewire guiding tube 46, one end of the guidewire guiding tube 46 close to the ultrasonic observation probe 34 is connected to a guidewire control end 47, one end of the guidewire guiding tube 46 away from the guidewire control end 47 is fixedly connected to a guidewire access port 48, and a guidewire access auxiliary mechanism 49 is movably connected to the outer side of the guidewire access port 48. A section of the guidewire guiding tube 46 connected to the guidewire access port 48 passes through a partial connecting hole opened at the top of the single-lumen micro-guidewire access tube 31, so that the guidewire steering transmission gear 42 can be flipped within a limited range with the cooperation of the toothed section inside the single-lumen micro-guidewire access tube 31.

[0028] Along the working guidewire, the ultrasound catheter is sent to the lesion through the ultrasound catheter's own track. The working guidewire is withdrawn, and a special guidewire for coronary artery (peripheral artery) occluded lesions with a conical and hard tip is sent along the ultrasound probe track. After the guidewire tip reaches the lesion, the ultrasound probe begins to measure the coronary artery (peripheral artery) vascular lumen diameter in real time, and transmits the lumen diameter data back to the host. The host analyzes the program and locates the point with the most diameter intersections as the lumen midpoint. The site information is transmitted to the ultrasound catheter tip in real time through the data-position conversion program. The ultrasound catheter tip has a 5CM long adjustable tip from the ultrasound probe position to the proximal end. After receiving the site information, the ultrasound probe adjustable tip automatically adjusts its position to the center of the blood vessel to ensure that the ultrasound catheter tip and the guidewire tip are in the center of the blood vessel (i.e., in the true lumen of the blood vessel). By adjusting the ultrasound catheter tip and guidewire position in real time to ensure that the guidewire tip is in the true lumen of the blood vessel, the guidewire is continuously sent forward and the direction is continuously adjusted until the guidewire passes through the occluded segment and reaches the distal true lumen.

[0029] When in use, first install a guide wire inside the ultrasound emission port 35, so that the guide wire can enter the inside of the single-lumen microcatheter 33 to control the movement of the signal access tube 32, provide a signal to the signal access tube 32, and allow the ultrasound probe to collect the blood vessel inner diameter data, and convert the point with the largest inner diameter of the intersecting blood vessel into a position point to guide the direction of the ultrasound catheter head. The position points at different levels of the blood vessel are different, and the catheter head automatically adjusts the direction according to the different position points. To ensure that the catheter always stays in the blood vessel cavity, the internal situation can be directly observed by observing the display screen 13.

[0030] At the top of the guidewire guiding substrate 36, after the driving signal core 45 receives the control signal input from the outside, the driving core 44 drives the driving gear 43 to rotate. The driving gear 43 will be driven to rotate within a limited range inside the single-lumen micro-guidewire access tube 31, thereby controlling the position movement of the guidewire guiding tube 46.

[0031] The tip of the catheter needs to be very hard to ensure that the catheter can follow up at the same time after the guide wire passes through.

[0032] During the process of guidewire entry, the guidewire enters the guidewire guiding tube 46 through the guidewire access port 48, and can be assisted in control by the guidewire access auxiliary mechanism 49. By pushing the guidewire access auxiliary mechanism 49, the guidewire can enter the guidewire guiding tube 46 more easily and the adjustment can be more precise to prevent accidents.

[0033] As a method of use, the ultrasound probe catheter currently used in clinical practice has a guidewire track about 15 cm long at the head end, which helps to deliver the ultrasound probe to the distal end of the coronary artery. The original track of the ultrasound catheter is extended outside the body to serve as the catheter delivery track, the guidewire exchange track, and to provide support for the guidewire head end; compared with the existing IVUS, this solution combines the imaging end and the ultrasound head, eliminating the 30mm imaging segment, making observation more accurate and adjustment more flexible.

[0034] The lumen of the coronary artery (peripheral artery) is quasi-circular, so it cannot be guaranteed that all diameters intersect at a central point. Similarly, countless diameters can be measured for a quasi-circular shape. As long as the point where 70-80% of the diameters intersect is calculated, this point can be regarded as the midpoint of the lumen, and this point must be in the true lumen of the lumen. As long as the guide wire is ensured to move forward through the occluded section in the true lumen of the lumen, the success of the operation can be guaranteed and the complications of the operation can be reduced. The ultrasound probe is used to collect the information on the diameter of the cross-section of the blood vessel. These diameters must have 70-80% intersecting at a point. This intersection point is converted into a position signal and transmitted to the catheter tip, so as to achieve the purpose of automatic adjustment of the tip to ensure that the guide wire is always in the true lumen of the blood vessel.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An intravascular ultrasound device for accurately opening vascular occlusive lesions by adjusting the direction of a probe, comprising a display mechanism (1), characterized in that: The front end of the display mechanism (1) is provided with a connection mechanism (2), an end of the connection mechanism (2) away from the display mechanism (1) is provided with an ultrasonic observation device (3), and an end of the ultrasonic observation device (3) away from the connection mechanism (2) is provided with a guide wire integration mechanism (4); The ultrasonic observation device (3) comprises a single-lumen micro-guidewire access tube (31), a signal access tube (32) is arranged inside the single-lumen micro-guidewire access tube (31), a single-lumen micro-catheter (33) is arranged inside the signal access tube (32), an ultrasonic observation probe (34) is arranged at one end of the single-lumen micro-catheter (33) away from the display mechanism (1), an ultrasonic emission port (35) is arranged at the top of the ultrasonic observation probe (34), and a guidewire guide substrate (36) is arranged at the top of the signal access tube (32); The guidewire integration mechanism (4) comprises a guidewire support frame (41), the bottom end of the guidewire support frame (41) is fixedly connected to the top end of the guidewire guide substrate (36), the top end of the guidewire support frame (41) is movably connected to a guidewire steering transmission gear (42), the outer side of the guidewire steering transmission gear (42) is toothed with a driving gear (43), the rear end of the driving gear (43) is connected to a driving core (44), the end of the driving core (44) away from the driving gear (43) is fixedly connected to a driving signal core (45), the bottom end of the driving signal core (45) is fixedly connected to the top end of the guidewire guide substrate (36), the inner side of the guidewire steering transmission gear (42) is fixedly connected to the driving signal core (45), and the lower end of the driving signal core (45) is fixedly connected to the top end of the guidewire guide substrate (36). A guide wire guide tube (46) is connected, one end of the guide wire guide tube (46) close to the ultrasonic observation probe (34) is connected to a guide wire control end (47), one end of the guide wire guide tube (46) away from the guide wire control end (47) is fixedly connected to a guide wire access port (48), and the outer side of the guide wire access port (48) is movably connected to a guide wire access auxiliary mechanism (49), and a section of the guide wire guide tube (46) connected to the guide wire access port (48) passes through a partial connection hole opened at the top end of the single-lumen micro-guide wire access tube (31), so that the guide wire steering transmission gear (42) can be turned over within a limited range with the cooperation of the toothed section inside the single-lumen micro-guide wire access tube (31).

2. The intravascular ultrasound device for adjusting the probe direction to accurately open vascular occlusive lesions according to claim 1, characterized in that: The display mechanism (1) comprises a display host (11), a display screen bracket (12) is arranged at the top of the display host (11), an observation display screen (13) is arranged at one end of the display screen bracket (12) away from the display host (11), a display base (14) is arranged at the bottom of the display host (11), an observation connecting pipe (15) is arranged at the rear end of the display host (11), and a control panel (16) is arranged at the top of the display host (11) at the front end of the observation display screen (13).

3. The intravascular ultrasound device for adjusting the probe direction to accurately open vascular occlusive lesions according to claim 2, characterized in that: The connection mechanism (2) comprises a connection housing (21), a connection signal transmission mechanism (22) is arranged inside the connection housing (21), a connection signal access mechanism (23) is arranged at the rear end of the connection signal transmission mechanism (22), and a signal access transmission connection port (24) is arranged at the rear end of the connection signal access mechanism (23).

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