Ultrasound catheter device

Abstract

The present invention belongs to the technical field of medical devices, and discloses an ultrasonic catheter device, which includes a catheter shell, a sealing seat, a transmission assembly and a sealing assembly. The catheter shell is sequentially connected with a catheter hole, a sealing groove and a transition groove from the first end to the second end. The peripheral side of the catheter shell is provided with a first overflow hole. The sealing seat is arranged in the sealing groove. The sealing seat is provided with a perforation. The first end of the transmission assembly is sequentially penetrated in the transition groove, the perforation and the catheter hole. The second end of the transmission assembly is used to connect a driving device. The sealing assembly is arranged in the sealing groove. The sealing assembly is used to seal the gap between the sealing seat and the sealing groove and the gap between the transmission assembly and the perforation. The ultrasonic catheter device provided by the present invention can effectively prevent the mixed solution from flowing into the transition groove through the sealing assembly. Even if the mixed solution flows into the transition groove, it can flow out from the first overflow hole, thereby effectively preventing the mixed solution from flowing to the driving device and damaging the driving device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an ultrasonic catheter device. Background Art

[0002] The IVUS system stands for intravascular ultrasound imaging system. In it, the IVUS catheter (hereinafter referred to as the "catheter") needs to transmit and receive ultrasound waves under high-speed rotation to achieve imaging. Its rotational motion is generally based on an external and reusable drive device.

[0003] Prior to insertion, a mixed solution of saline and sodium heparin is typically injected into the catheter. This mixture creates a high pressure inside the catheter, effectively displacing air bubbles and ensuring accurate measurements. Currently, the catheter is typically sealed with a single sealing ring to prevent the mixed solution from leaking into the drive mechanism. This sealing method carries a certain risk of leakage, as the mixed solution is highly conductive, and leakage could damage the drive mechanism. Therefore, an ultrasonic catheter device is urgently needed to address this technical issue. Summary of the Invention

[0004] The object of the present invention is to provide an ultrasonic catheter device that effectively prevents a mixed solution from flowing into a driving device.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] An ultrasound catheter device is provided, comprising:

[0007] A conduit shell, wherein the conduit shell is sequentially provided with a conduit hole, a sealing groove, and a transition groove from a first end to a second end, wherein the conduit hole can be injected with a mixed solution, and a first overflow hole in communication with the transition groove is opened on a circumferential side of the conduit shell;

[0008] A sealing seat is disposed in the sealing groove, and the sealing seat is provided with a through hole;

[0009] a transmission assembly, wherein a first end of the transmission assembly is sequentially passed through the transition groove, the through hole, and the conduit hole, and a second end of the transmission assembly is used to connect to a driving device;

[0010] A sealing assembly is disposed in the sealing groove, and is used to seal the gap between the sealing seat and the sealing groove and the gap between the transmission assembly and the through hole.

[0011] Optionally, the sealing seat is provided with a fixing groove communicating with the through hole, and the sealing assembly includes:

[0012] A first sealing ring is disposed in the sealing groove, wherein a first side surface of the first sealing ring abuts against a bottom surface of the sealing groove, and a second side surface of the first sealing ring abuts against an end surface of the sealing seat where the fixing groove is provided;

[0013] The second sealing ring is arranged in the fixing groove, the first side surface of the second sealing ring abuts against the second side surface of the first sealing ring, and the second side surface of the second sealing ring abuts against the bottom surface of the fixing groove.

[0014] Optionally, the second side circumferential edge of the first sealing ring is extended toward the sealing seat with an annular extension edge, and the circumferential edge of one end of the sealing seat where the fixing groove is opened is provided with an annular groove, and the annular extension edge is covered on the sealing seat and placed in the annular groove.

[0015] Optionally, the sealing assembly further comprises a sealing member, which is arranged at one end of the sealing seat facing away from the fixing groove, and the sealing member can seal the gap between the peripheral edge of the end of the sealing seat facing away from the fixing groove and the inner side surface of the sealing groove.

[0016] Optionally, the transmission assembly includes:

[0017] a transmission tube, wherein a first end of the transmission tube passes through the transition groove, the through hole, the first sealing ring, and the second sealing ring in sequence and is placed in the conduit hole, and a second end of the transmission tube is used to connect to the driving device;

[0018] The rotating wire is passed through the catheter hole, and the first end of the rotating wire is passed through the catheter hole. The second end of the rotating wire is plugged into the first end of the transmission tube and fixedly connected to the transmission tube.

[0019] Optionally, the first end of the transmission tube is provided with a chamfer and / or the connection between the transmission tube and the rotating wire is coated with glue, so that the connection between the transmission tube and the rotating wire is sloped.

[0020] Optionally, a switching assembly is further included, wherein the switching assembly is detachably connected to the transmission assembly, and the transmission assembly can be connected to the drive device through the switching assembly.

[0021] Optionally, the adapter assembly includes:

[0022] The adapter seat is provided with a first through hole;

[0023] a fixing seat connected to the adapter seat, the fixing seat being provided with a second through hole coaxial with the first through hole, and a second overflow hole communicating with the second through hole being provided on a peripheral side of the fixing seat;

[0024] a docking shaft, passing through the first through hole and the second through hole, the docking shaft being rotatably connected to the adapter, and the docking shaft being used to connect to the driving device;

[0025] The third sealing ring is arranged in the second through hole and sleeved on the docking shaft.

[0026] Optionally, an annular groove is provided on the outer annular surface of the third sealing ring, and a fourth sealing ring is provided in the annular groove.

[0027] Optionally, a sealing lip is provided on the inner annular surface of the third sealing ring, the lip opening of the sealing lip is arranged facing away from the adapter seat, and an elastomer is provided inside the sealing lip, which can make the inner lip edge of the sealing lip abut against the docking shaft.

[0028] Beneficial effects:

[0029] In the ultrasonic catheter device provided by the present invention, when the driving device drives the transmission component to operate, a mixed solution is injected into the catheter hole. Under the sealing action of the sealing component, the mixed solution can be effectively prevented from flowing from the outer peripheral side of the sealing seat into the transition groove; and the mixed solution can be effectively prevented from flowing from the perforation into the transition groove. In addition, even if the mixed solution flows into the transition groove, it can flow out through the first overflow hole, thereby effectively preventing the mixed solution from flowing to the driving device and damaging the driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a cross-sectional view of a portion of the structure of the ultrasonic catheter device provided in Example 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the internal structure of the catheter housing provided by the first embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of a portion of the structure of the ultrasound catheter device provided in Example 1 of the present invention;

[0033] Figure 4 is a cross-sectional view of another portion of the structure of the ultrasonic catheter device provided in the first embodiment of the present invention;

[0034] Figure 5 This is a schematic structural diagram of the connection between the transmission tube and the rotating wire provided in the first embodiment of the present invention;

[0035] Figure 6 This is a cross-sectional view of another portion of the structure of the ultrasound catheter device provided in the first embodiment of the present invention;

[0036] Figure 7 is a cross-sectional view of the third sealing ring provided in Example 1 of the present invention;

[0037] Figure 8is a schematic structural diagram of a third sealing ring provided in the first embodiment of the present invention;

[0038] Figure 9 It is a partial structural cross-sectional view of the ultrasonic catheter device provided in the second embodiment of the present invention.

[0039] In the picture:

[0040] 100, conduit housing; 110, conduit hole; 120, sealing groove; 130, transition groove; 140, first overflow hole; 150, water injection hole;

[0041] 200, sealing seat; 210, perforation; 220, fixing groove; 230, annular groove;

[0042] 300, seals;

[0043] 410, first sealing ring; 411, annular extension edge; 420, second sealing ring;

[0044] 500, transmission assembly; 510, transmission tube; 520, wire spinning;

[0045] 600, one-way valve;

[0046] 700, adapter assembly; 710, adapter seat; 711, first through hole; 720, fixing seat; 721, second through hole; 722, second overflow hole; 730, docking shaft; 731, sleeve portion; 740, third sealing ring; 741, annular groove; 7411, fourth sealing ring; 742, sealing lip; 7421, elastomer; 7422, inner lip; 74221, lip tip; 750, first bearing; 760, bearing seat; 761, second bearing;

[0047] 810. Adapter plug-in; 820. Protective cover. DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0049] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0052] Example 1

[0053] Reference Figures 1 to 4 As shown, this embodiment provides an ultrasonic catheter device, comprising a catheter housing 100, a sealing seat 200, a transmission assembly 500, and a sealing assembly. The catheter housing 100 is provided with a catheter hole 110, a sealing groove 120, and a transition groove 130, sequentially connected from a first end to a second end. A mixed solution can be injected into the catheter hole 110. A first overflow hole 140 communicating with the transition groove 130 is defined on the circumference of the catheter housing 100. The sealing seat 200 is disposed within the sealing groove 120 and has a through-hole 210. A first end of the transmission assembly 500 is sequentially passed through the transition groove 130, the through-hole 210, and the catheter hole 110. The second end of the transmission assembly 500 is configured to connect to a drive device. The sealing assembly is disposed within the sealing groove 120 and is configured to seal the gap between the sealing seat 200 and the sealing groove 120, as well as the gap between the transmission assembly 500 and the through-hole 210.

[0054] In this embodiment, when the driving device drives the transmission component 500 to operate, a mixed solution is injected into the conduit hole 110. Under the sealing action of the sealing component, the mixed solution can be effectively prevented from flowing from the outer peripheral side of the sealing seat 200 to the transition groove 130; and the mixed solution can be effectively prevented from flowing from the through hole 210 to the transition groove 130. In addition, even if the mixed solution flows into the transition groove 130, it can flow out from the first overflow hole 140, providing multiple waterproof protections, thereby effectively preventing the mixed solution from flowing to the driving device and damaging the driving device, and having high reliability.

[0055] In this embodiment, continue to refer to Figures 1 to 4 As shown, the sealing seat 200 defines a fixing groove 220 that communicates with the through-hole 210. The sealing assembly includes a first sealing ring 410 and a second sealing ring 420. The first sealing ring 410 is disposed within the sealing groove 120, with a first side surface of the first sealing ring 410 abutting the bottom surface of the sealing groove 120, and a second side surface of the first sealing ring 410 abutting the end surface of the sealing seat 200 having the fixing groove 220. The second sealing ring 420 is disposed within the fixing groove 220, with a first side surface of the second sealing ring 420 abutting the second side surface of the first sealing ring 410, and a second side surface of the second sealing ring 420 abutting the bottom surface of the fixing groove 220. Furthermore, the transmission assembly 500 is penetrated by the first sealing ring 410 and the second sealing ring 420. In this embodiment, under the sealing action of the first sealing ring 410, the mixed solution can be effectively prevented from flowing from the outer peripheral side of the sealing seat 200 to the transition groove 130; and under the action of the first sealing ring 410 and the second sealing ring 420, the mixed solution can be effectively prevented from flowing from the through hole 210 to the transition groove 130, with high reliability.

[0056] Preferably, the first sealing ring 410 and the second sealing ring 420 are herringbone sealing rings. The herringbone sealing rings can reduce the contact area with the transmission assembly 500, thereby reducing resistance and heat during rotation.

[0057] Furthermore, the sealing assembly includes a sealing member 300, which is disposed at the end of the sealing seat 200 facing away from the fixing groove 220. The sealing member 300 is capable of sealing the gap between the peripheral edge of the end of the sealing seat 200 facing away from the fixing groove 220 and the inner side surface of the sealing groove 120. In this embodiment, the sealing member 300 cooperates with the first sealing ring 410 to better seal the gap between the sealing seat 200 and the sealing groove 120.

[0058] In this embodiment, referring to Figure 1 and Figure 5 As shown, the transmission assembly 500 includes a transmission tube 510 and a rotating wire 520. The first end of the transmission tube 510 sequentially passes through the transition groove 130, the through-hole 210, the first sealing ring 410, and the second sealing ring 420, and is positioned within the catheter hole 110. The second end of the transmission tube 510 is used to connect to the drive device. The rotating wire 520 is positioned within the catheter hole 110, with the first end of the rotating wire 520 extending out of the catheter hole 110. The second end of the rotating wire 520 is plugged into the first end of the transmission tube 510 and fixedly connected to the transmission tube 510. In this embodiment, the transmission tube 510 is a rigid tube, and the rotating wire 520 is a rotating wire. The transmission tube 510 effectively ensures the sealing between the transmission assembly 500 and the first and second sealing rings 410, 420, while effectively reducing the wear of the transmission tube 510 on the first and second sealing rings 410, 420.

[0059] Preferably, the transmission tube 510 is made of steel.

[0060] Specifically, the first end of the transmission tube 510 is provided with a chamfer and / or the connection between the transmission tube 510 and the rotating wire 520 is coated with glue, so that the connection between the transmission tube 510 and the rotating wire 520 is sloped, thereby making the connection between the transmission tube 510 and the rotating wire 520 have a smooth transition. When the first sealing ring 410 and the second sealing ring 420 are passed through the transmission assembly 500, the connection between the transmission tube 510 and the rotating wire 520 is effectively prevented from damaging the first sealing ring 410 and the second sealing ring 420, while ensuring the sealing of the first sealing ring 410 and the second sealing ring 420, it is avoided that the cutting caused by the damage of the first sealing ring 410 and the second sealing ring 420 enters the human body with the water flow and causes harm.

[0061] Preferably, the sealing member 300 is a solidified glue. To ensure that the outer annular surface of the first sealing ring 410 is in close contact with the inner side surface of the sealing groove 120, when assembling the ultrasonic catheter device, the first sealing ring 410 is first installed in the sealing groove 120, the second sealing ring 420 is installed in the fixing groove 220, and the transmission tube 510 is passed through the through hole 210 and the second sealing ring 420; then the sealing seat 200 is connected to the second sealing ring 420, and the transmission tube 510 is installed in the catheter housing 100, and the transmission tube 510 can be used to ensure that the sealing member 300 is in close contact with the inner side surface of the sealing groove 120. The through-hole 210, the first sealing ring 410, the second sealing ring 420, and the catheter hole 110 are coaxial. Finally, a weight or other heavy object is placed on the transmission tube 510 as a counterweight to press the sealing seat 200 tightly into the sealing groove 120. Glue is then applied to secure the sealing seat 200 to the catheter housing 100. The counterweight applies pressure to expand the first sealing ring 410, and the second sealing ring 420 helps the first sealing ring 410 better control its deformation, thereby ensuring that the outer annular surface of the first sealing ring 410 is in close contact with the inner surface of the sealing groove 120. The size of the counterweight depends on the hardness of the first sealing ring 410 and the required deformation amount.

[0062] Furthermore, the shape of the sealing seat 200 is a cone, and the shape of the sealing groove 120 matches the shape of the sealing seat 200. The counterweight pressure can make the first sealing ring 410 deform and extend better, thereby making the first sealing ring 410 better form a seal between the sealing groove 120 and the sealing seat 200.

[0063] In this embodiment, referring to Figure 2As shown, a water injection hole 150 is provided around the first end of the conduit housing 100, communicating with the conduit hole 110. A one-way valve 600 is connected to the water injection hole 150. In this embodiment, a water injection device is connected to the one-way valve 600, and a mixed solution is injected into the conduit hole 110 through the water injection hole 150. The design of the one-way valve 600 prevents the mixed solution from flowing back, effectively maintaining the water pressure within the conduit hole 110, and thereby discharging air bubbles within the conduit hole 110.

[0064] In this embodiment, referring to Figure 6 As shown, the ultrasonic catheter device also includes an adapter assembly 700, which is detachably connected to the transmission assembly 500. The transmission assembly 500 can be connected to the drive device through the adapter assembly 700. The design of the adapter assembly 700 facilitates the connection between the transmission assembly 500 and the drive device and further prevents the mixed solution from flowing to the drive device.

[0065] Specifically, the adapter assembly 700 includes an adapter seat 710, a fixed seat 720, a docking shaft 730, and a third sealing ring 740. The adapter seat 710 is provided with a first through hole 711. The fixed seat 720 is connected to the adapter seat 710 and is provided with a second through hole 721 coaxial with the first through hole 711. A second overflow hole 722 communicating with the second through hole 721 is provided on the circumference of the fixed seat 720. The docking shaft 730 is used to connect to the drive device and is provided through the first through hole 711 and the second through hole 721, and is rotatably connected to the adapter seat 710. The third sealing ring 740 is provided in the second through hole 721 and sleeved on the docking shaft 730. The second overflow hole 722 is provided on the side of the sealing ring facing away from the adapter seat 710. In this embodiment, if the first and second sealing rings 410 and 420 become insufficiently sealed or improperly cleaned due to factors such as manufacturing, aging, or infiltration, the mixed solution may flow into the second through-hole 721. The mixed solution flowing into the second through-hole 721 can then flow out through the second overflow hole 722. The design of the third sealing ring 740 effectively prevents the mixed solution from flowing into the first through-hole 711 through the inner side of the second through-hole 721 and the peripheral side of the docking shaft 730, thereby further effectively preventing the mixed solution from flowing into the drive device and damaging the drive device. Furthermore, the split design of the adapter 710 and the fixing base 720 facilitates assembly of the docking shaft 730 and the third sealing ring 740, provides high reliability, and has a simple and compact structure.

[0066] Specifically, a first bearing 750 is provided at one end of the adapter seat 710 facing the fixed seat 720, and a bearing seat 760 is provided at one end of the adapter seat 710 facing away from the fixed seat 720. A second bearing 761 is provided in the bearing seat 760. The docking shaft 730 is passed through the first bearing 750 and the second bearing 761 and is rotatably connected to the adapter seat 710 through the first bearing 750 and the second bearing 761, which is convenient for disassembly and assembly, and the outward beam design has a compact structure and high stability.

[0067] Furthermore, the first through hole 711 is a stepped hole, and the large end of the first through hole 711 faces the fixing seat 720 , which can effectively prevent the mixed solution from flowing to the driving device.

[0068] Specifically, the second through hole 721 is a stepped hole, and the large end hole of the second through hole 721 is arranged toward the adapter seat 710. The third sealing ring 740 is arranged in the large end hole of the second through hole 721, and the side of the third sealing ring 740 facing away from the adapter seat 710 is pressed against the stepped surface of the second through hole 721. An annular protrusion is provided at one end of the adapter seat 710 facing the fixed seat 720, and the annular protrusion is pressed against the side of the third sealing ring 740 facing the adapter seat 710, thereby realizing axial positioning of the third sealing ring 740 and realizing sealing between the third sealing ring 740 and the fixed seat 720.

[0069] Preferably, the first sealing ring 410 , the second sealing ring 420 and the third sealing ring 740 are made of materials with good elasticity, wear resistance and high temperature resistance, such as polytetrafluoroethylene, polyurethane and the like.

[0070] It is worth mentioning that the second overflow hole 722 is arranged at an angle to increase the opening area at the connection with the second through hole 721 , thereby accelerating the outflow of the mixed solution.

[0071] In this embodiment, referring to Figures 7 and 8 As shown, the outer annular surface of the third sealing ring 740 is provided with an annular groove 741, within which a fourth sealing ring 7411 is disposed. In this embodiment, an interference fit is formed between the fourth sealing ring 7411 and the inner surface of the second through-hole 721. The radial deformation of the fourth sealing ring 7411 prevents the mixed solution from passing through, thereby achieving a better static seal. The interference fit is determined based on factors such as the required sealing pressure, rotational friction torque, and temperature, and is preferably greater than 0.1 mm.

[0072] Preferably, the fourth sealing ring 7411 is made of a material with good elasticity and weather resistance, such as fluororubber, silicone, etc.

[0073] Preferably, the fourth sealing ring 7411 is an O-ring.

[0074] Furthermore, the inner annular surface of the third sealing ring 740 is provided with a sealing lip 742, with the lip opening of the sealing lip 742 facing away from the adapter 710. An elastomer 7421 is disposed within the sealing lip 742. The elastomer 7421 enables the inner lip edge 7422 of the sealing lip 742 to abut against the docking shaft 730, thereby achieving a seal. In this embodiment, the design of the elastomer 7421 enables the sealing lip 742 to form a good seal with the docking shaft 730. The inner lip edge 7422 of the sealing lip 742 has a lip tip 74221, which abuts against the docking shaft 730 and forms an interference fit with the docking shaft 730, achieving a rotary seal. By utilizing the elastic deformation of the material, the sealing lip 742 and the docking shaft 730 always maintain line contact or slight surface contact, thereby reducing frictional resistance and frictional heat generation. When an excess of mixed solution exists within second through-hole 721, it flows into sealing lip 742, generating additional radial pressure on the inner lip edge 7422 of sealing lip 742. This in turn increases the contact pressure between lip tip 74221 and docking shaft 730, further enhancing sealing performance and preventing liquid from entering the catheter drive mechanism through the sealing ring. During assembly, third sealing ring 740 is first mounted on mounting base 720. When docking shaft 730 is inserted into third sealing ring 740, tooling is required to provide axial guidance and radial movement control to prevent excessive deformation of sealing lip 742. The axial guidance angle is set between 10° and 30°, and the coaxiality between docking shaft 730 and third sealing ring 740 is within 0.2mm.

[0075] Preferably, the cross-sectional shape of the elastic body 7421 can be V-shaped, O-shaped or other shapes.

[0076] In this embodiment, referring to Figure 1 and Figure 6 As shown, the ultrasound catheter device also includes an adapter plug 810 connected to the transmission assembly 500. Adapter plug 810 is detachably connected to the docking shaft 730. Specifically, the docking shaft 730 has a sleeve portion 731 at the end facing the adapter plug 810, into which the plug assembly is inserted. Adapter plug 810 is conventional and will not be described in detail here.

[0077] Furthermore, the ultrasonic catheter device further includes a protective cover 820 sleeved on the adapter plug 810 , and the protective cover 820 is connected to the second end of the catheter housing 100 to provide protection.

[0078] Example 2

[0079] The first sealing ring in the ultrasonic catheter device provided in this embodiment is different from that in the first embodiment. Figure 9As shown, the second side circumferential edge of the first sealing ring 410 extends toward the sealing seat 200 and is provided with an annular extension edge 411. The sealing seat 200 is provided with an annular groove 230 at one end circumferential edge of the fixing groove 220. The annular extension edge 411 is covered on the sealing seat 200 and is placed in the annular groove 230. The first sealing ring 410 increases the contact area between the first sealing ring 410 and the inner side of the sealing groove 120 through the annular extension edge 411 to improve the sealing effect.

[0080] Furthermore, the circumferential side surface of the annular groove 230 of the sealing seat 200 is inclined inward from the bottom of the groove to the top of the groove, and the shape of the sealing groove 120 matches the shape of the sealing seat 200. When the counterweight is used to pressurize the first sealing ring 410 to extend, the annular extension edge 411 can better form a seal between the sealing groove 120 and the sealing seat 200.

[0081] The other structures of the ultrasonic catheter device provided in this embodiment are the same as those in the first embodiment and will not be described in detail here.

[0082] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An ultrasonic catheter device, characterized in that include: A catheter shell (100), wherein the catheter shell (100) is provided with a catheter hole (110), a sealing groove (120) and a transition groove (130) in sequence from a first end to a second end, a mixed solution can be injected into the catheter hole (110), and a first overflow hole (140) in communication with the transition groove (130) is provided on a peripheral side of the catheter shell (100); A sealing seat (200) is disposed in the sealing groove (120), the sealing seat (200) is provided with a through hole (210) and a fixing groove (220) connected to the through hole (210), and the sealing seat (200) is in the shape of a frustum; A transmission assembly (500), wherein a first end of the transmission assembly (500) is sequentially inserted into the transition groove (130), the through hole (210), and the catheter hole (110), and a second end of the transmission assembly (500) is used for connecting to a driving device; a sealing component, disposed in the sealing groove (120), the sealing component being used to seal a gap between the sealing seat (200) and the sealing groove (120) and a gap between the transmission component (500) and the through hole (210); Wherein, the sealing assembly comprises a first sealing ring (410) and a second sealing ring (420); A first sealing ring (410) is disposed in the sealing groove (120), and a first side surface of the first sealing ring (410) abuts against a groove bottom surface of the sealing groove (120), and a second side surface of the first sealing ring (410) abuts against an end surface of the sealing seat (200) provided with the fixing groove (220); The second sealing ring (420) is arranged in the fixing groove (220), the first side surface of the second sealing ring (420) abuts against the second side surface of the first sealing ring (410), and the second side surface of the second sealing ring (420) abuts against the bottom surface of the fixing groove (220).

2. The ultrasonic catheter device according to claim 1, characterized in that: An annular extension edge (411) is provided on the circumferential edge of the second side surface of the first sealing ring (410) extending toward the sealing seat (200); an annular groove (230) is provided on the circumferential edge of one end of the sealing seat (200) where the fixing groove (220) is opened; the annular extension edge (411) covers the sealing seat (200) and is placed in the annular groove (230).

3. The ultrasonic catheter device according to claim 1, characterized in that: The sealing assembly further comprises a sealing member (300), wherein the sealing member (300) is arranged at one end of the sealing seat (200) facing away from the fixing groove (220), and the sealing member (300) is capable of sealing a gap between a peripheral edge of one end of the sealing seat (200) facing away from the fixing groove (220) and an inner side surface of the sealing groove (120).

4. The ultrasonic catheter device according to claim 1, characterized in that: The transmission assembly (500) comprises: a transmission tube (510), wherein a first end of the transmission tube (510) is sequentially penetrated through the transition groove (130), the through hole (210), the first sealing ring (410), and the second sealing ring (420) and is placed in the catheter hole (110), and a second end of the transmission tube (510) is used for connecting to the driving device; The rotating wire (520) is inserted into the catheter hole (110), and the first end of the rotating wire (520) is inserted into the first end of the transmission tube (510) and fixedly connected to the transmission tube (510).

5. The ultrasonic catheter device according to claim 4, characterized in that: The first end of the transmission tube (510) is provided with a chamfer and / or the connection between the transmission tube (510) and the rotating wire (520) is coated with glue, so that the connection between the transmission tube (510) and the rotating wire (520) is in a slope shape.

6. The ultrasonic catheter device according to any one of claims 1 to 5, characterized in that: It also comprises a switching assembly (700), wherein the switching assembly (700) is detachably connected to the transmission assembly (500), and the transmission assembly (500) can be connected to the driving device via the switching assembly (700).

7. The ultrasonic catheter device according to claim 6, characterized in that: The adapter component (700) comprises: The adapter seat (710) is provided with a first through hole (711); A fixing seat (720) connected to the adapter seat (710), the fixing seat (720) being provided with a second through hole (721) coaxial with the first through hole (711), and a second overflow hole (722) communicating with the second through hole (721) being provided on a peripheral side of the fixing seat (720); a docking shaft (730), which is inserted through the first through hole (711) and the second through hole (721), and the docking shaft (730) is rotatably connected to the adapter seat (710), and the docking shaft (730) is used to be connected to the driving device; A third sealing ring (740) is disposed in the second through hole (721) and sleeved on the docking shaft (730).

8. The ultrasonic catheter device according to claim 7, characterized in that: An annular groove (741) is provided on the outer annular surface of the third sealing ring (740), and a fourth sealing ring (7411) is provided in the annular groove (741).

9. The ultrasonic catheter device according to claim 7, characterized in that: The inner annular surface of the third sealing ring (740) is provided with a sealing lip (742), the lip opening of the sealing lip (742) is arranged to face away from the adapter seat (710), and an elastomer (7421) is arranged inside the sealing lip (742), and the elastomer (7421) can make the inner lip edge (7422) of the sealing lip (742) abut against the docking shaft (730).

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