Intravascular shock wave catheter with rotatable and movable shock wave emitter

Abstract

The invention relates to an intravascular shock wave catheter with a rotatable and movable shock wave emitter, which comprises a balloon catheter, a shock wave emitter assembly and a transmission case, the balloon catheter comprises a balloon, an inner tube, an outer tube and a Luer seat, and the shock wave emitter assembly is sleeved outside the inner tube and comprises an emitter, a rotating shaft tube and an emitter lead. The transmission case comprises a shell fixing seat, a driving part and a movable transmission assembly, the Luer seat is fixed on the shell fixing seat, and the inner tube is fixedly connected with the guide wire Luer taper; the moving transmission assembly is in sliding connection with the shell fixing seat, a rotating mechanism is arranged on the moving transmission assembly, the rotating shaft pipe is connected with the moving transmission assembly, and the driving piece drives the moving transmission assembly to enable the rotating shaft pipe to rotate and axially slide; and a transmitter wire and a control and power supply wire of the driving piece are connected with the host through plugs. According to the invention, production is more convenient, and the yield is higher; meanwhile, operation is simpler, and the treatment effect can be effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to an intravascular shock wave catheter with a rotatable and movable shock wave emitter. Background Art

[0002] Currently, the main principle of the intravascular shock wave system is that the host transmits high-pressure energy to the shock wave emitter in the balloon at the front end of the intravascular shock wave catheter. The shock wave emitter generates shock wave energy through interaction with the solution medium in the balloon to achieve the purpose of shattering intravascular calcification. However, currently, the energy emission of the shock wave emitter has certain regional characteristics, that is, the energy in the area directly facing the emission hole of the shock wave emitter is stronger, and the energy in the remaining areas gradually weakens. That is, in the circumferential direction of the balloon, the energy in the angular direction directly facing the emission hole is stronger, and the energy in the remaining angles is weak. In the axial direction of the balloon, the energy directly facing the emission hole is stronger, and the energy away from the emission hole is weaker. However, intravascular calcification lesions are relatively complex, and the severity and lesion length of the calcification lesions in the radial and axial directions of the blood vessel are different.

[0003] Currently, when the intravascular shock wave technology solves such problems, it often uses multiple pairs of emitters to deal with relatively complex calcification lesion problems, increases the effective length of the balloon and the number of shock wave emitters in the balloon to deal with axially long calcification lesions, and designs the emission holes of multiple shock wave emitters at different angles to achieve the purpose of treating uneven radial calcification thickness lesions. This will cause many problems in the use and manufacturing processes. For example: Multiple shock wave emitters make the manufacturing process of the intravascular shock wave catheter very complex and the yield rate is low; and even if the intravascular shock wave catheter contains multiple shock wave emitters, it is still very difficult for doctors to place the emitter exactly at the position where the energy is the strongest during use, and multiple adjustments are often required; when dealing with long intravascular calcification lesions, the position of the entire catheter needs to be manually adjusted to adjust the position of the emitter; the operation level requirements for doctors are relatively high, the operation is cumbersome, and the treatment effect is affected. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an intravascular shock wave catheter with a rotatable and movable shock wave emitter, which is more convenient for production, processing, and use operation, and can effectively improve the treatment effect.

[0005] In order to achieve the above invention purpose, the present invention adopts the following technical solutions: An intravascular shock wave catheter with a rotatable and movable shock wave emitter, comprising a balloon catheter and a shock wave emitter assembly. The balloon catheter includes a balloon, an outer tube, and a Luer seat connected in sequence, and an inner tube passing through the Luer seat, the outer tube, and the balloon. The distal end of the inner tube is hermetically and fixedly connected to the distal end of the balloon. The shock wave emitter assembly includes a rotating shaft tube and an emitter fixed on the outer wall of the rotating shaft tube. The rotating shaft tube is sleeved outside the inner tube, and there are gaps for liquid to pass between the rotating shaft tube and the inner tube, the Luer seat, the outer tube, and the balloon. A sealing ring is provided between the Luer seat and the rotating shaft tube, and an inner tube sealing ring is provided between the rotating shaft tube and the inner tube. An emitter wire is also provided between the rotating shaft tube and the inner tube. One end of the emitter wire is connected to the emitter, and the other end penetrates through the inner tube sealing ring. It further includes a transmission box, which includes a housing fixing seat, a driving member, and a moving transmission assembly. The proximal end of the Luer seat is fixed on the housing fixing seat, and a guide wire Luer connector is also provided on the housing fixing seat. The proximal end of the inner tube is fixedly connected to the guide wire Luer connector. The moving transmission assembly is slidably connected to the housing fixing seat. A rotating mechanism is provided on the moving transmission assembly. The proximal end of the rotating shaft tube is connected to the moving transmission assembly. The driving member is fixed on the housing fixing seat and rotates and axially slides the rotating shaft tube by driving the moving transmission assembly. The emitter wire, the control and power supply wires of the driving member are all connected to the main machine through a plug.

[0006] As a preferred solution: The driving member is an electric push rod or a moving control motor. The moving transmission assembly includes a sliding base, which is slidably connected to the housing fixing seat. The electric push rod is connected to the sliding base, or the moving control motor is in transmission cooperation with the sliding base through a gear rack or a worm and worm gear.

[0007] As a preferred solution: The rotating mechanism is a rotation control motor, which is fixed on the sliding base. A rotating transmission gear is fixed on the output shaft of the rotation control motor, and a tail gear is fixed at the proximal end of the rotating shaft tube. The rotation control motor drives the rotating shaft tube to rotate through the meshing of the rotating transmission gear and the tail gear.

[0008] As a preferred solution: One end of the sliding base is also provided with a convex block, and an arc-shaped groove A is provided on the convex block. A rotating limit ring is fixed at the proximal end of the rotating shaft tube, and the rotating limit ring is arranged in the arc-shaped groove A. A cover plate is also fixed on the convex block, and an arc-shaped groove B is also opened in the cover plate. The arc-shaped groove A and the arc-shaped groove B form an annular groove, and the annular groove cooperates with the rotating limit ring to enable the rotating shaft tube to axially move along with the moving transmission assembly and rotate relative to the moving transmission assembly.

[0009] As a preferred solution: A sliding guiding mechanism is also provided at the bottom of the sliding base. There is a moving sliding groove on the housing fixing seat, and the sliding guiding mechanism is inserted into the moving sliding groove so that the moving transmission assembly forms a sliding connection with the housing fixing seat.

[0010] As a preferred solution: The sliding guiding mechanism is a convex strip with a triangular, trapezoidal or circular cross-section. The cross-sectional shape of the moving sliding groove is the same as that of the sliding guiding mechanism, and the sliding guiding mechanism and the moving sliding groove are in clearance fit.

[0011] As a preferred solution: A rack or a worm is fixed on the sliding base. A moving transmission gear or a worm gear is fixed on the output shaft of the moving control motor. The moving transmission gear meshes with the rack for transmission, or the worm gear meshes with the worm for transmission.

[0012] As a preferred solution: The rotating shaft tube includes a flexible rotating shaft tube and a rigid rotating shaft tube which are fixedly connected to each other. The transmitter and the transmitter wire are fixed on the outer wall of the flexible rotating shaft tube, and the transmitter wire penetrates through the connection part of the flexible rotating shaft tube and the rigid rotating shaft tube. The inner tube sealing ring is arranged inside the rigid rotating shaft tube.

[0013] As a preferred solution: One end of the outer shell fixing seat is provided with a fixing notch. The Luer seat is clamped in the fixing notch. One end of the fixing notch close to the moving transmission component is further provided with a moving component limiting rib. A moving limiting ring is also fixed on the rigid rotating shaft tube, and the moving limiting ring is located between the sealing ring and the moving component limiting rib.

[0014] As a preferred solution: The inner tube sealing ring and the rigid rotating shaft tube are fixedly and sealingly connected by in-mold insert injection molding, interference fit or glue. The inner tube sealing ring is provided with a wire groove, and the wire groove and the inner wall of the rigid rotating shaft tube form a wire passing cavity, and the transmitter wire passes through the wire passing cavity and is sealed with glue.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the shock wave emitter assembly is sleeved outside the inner tube of the balloon catheter, and an inner tube sealing ring and a sealing ring are respectively arranged between the shock wave emitter assembly and the inner tube and the Luer seat, ensuring the sealing of the liquid in the balloon catheter. At the same time, the shock wave emitter assembly is driven by a transmission box to rotate and move axially. When the balloon part at the distal end of the catheter is filled and fixed, the shock wave emitter inside it can rotate radially and move axially relative to the balloon. The emission holes on the shock wave emitter will follow the rotation of the shock wave emitter to achieve the emission angle required by the operator, and the emitter moves axially inside the balloon to achieve the purpose of reducing the number of emitters for treating long calcified lesions.

[0016] The transmission box of the shock wave catheter of the present invention is arranged at the end of the catheter. Compared with the structure of arranging multiple pairs of emitters inside the catheter, the operation space is larger, it is more convenient for production, and the yield rate is higher; at the same time, since the shock wave generator can move, the doctor does not need to move the catheter during use, and the operation is relatively simpler, which can effectively improve the treatment effect. Description of the Drawings

[0017] The accompanying drawings of the specification, which form a part of the present application, are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation to the present application.

[0018] Figure 1 is a schematic cross-sectional structure diagram of the whole of the present invention; Figure 2 is a schematic cross-sectional structure diagram of the balloon catheter of the present invention; Figure 3 is a schematic cross-sectional structure diagram of the shock wave emitter assembly of the present invention; Figure 4 is a schematic diagram of a partially cut-away structure of the shock wave emitter assembly of the present invention; Figure 5 is a schematic structure diagram of the inner tube sealing ring of the present invention; Figure 6 is a schematic structure diagram of the transmission box of the present invention; Figure 7 is a schematic structure diagram of the mobile transmission assembly of the present invention; Figure 8 is a schematic structure diagram of the outer shell fixing seat of the present invention; Figure 9 is a schematic assembly structure diagram of the balloon catheter and the shock wave emitter assembly of the present invention; Figure 10 is a schematic cut-away structure diagram of the whole of the present invention.

[0019] The reference numerals are: 1, balloon catheter; 101, balloon; 102, inner tube; 103, guide wire cavity; 104, outer tube; 105, Luer seat; 106, sealing ring; 107, catheter liquid cavity; 108, liquid inlet channel; 109, rigid connecting tube; 111, wire outlet channel; 112, Luer seat liquid channel; 2, shock wave emitter assembly; 201, emitter; 2011, emitter emission point; 202, flexible rotating shaft tube; 2021, flexible rotating shaft tube inner cavity; 203, rigid rotating shaft tube; 2031, rigid rotating shaft tube inner cavity; 2032, moving limit ring; 2033, tail gear; 2034, rotating limit ring; 204, emitter wire; 205, inner tube sealing ring; 2051, wire passing groove; 206, gap; 207, wire passing cavity; 3, transmission box; 301, outer shell fixing seat; 3011, moving chute; 3012, guide wire Luer joint; 3013, fixing notch; 3014, moving component limit rib; 302, moving control motor; 303, mobile transmission assembly; 304, mobile transmission gear; 3031, rotation control motor; 3032, rotation transmission gear; 3033, sliding base; 3034, cover plate; 30331, rack; 30332, sliding guide mechanism; 4, plug. Detailed embodiments

[0020] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0021] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "plural" is two or more, unless otherwise clearly defined.

[0024] In the present invention, unless otherwise clearly specified and defined, the terms "mount", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: As Figure 1 and Figure 2 shown, an intravascular shock wave catheter with a rotatable and movable shock wave emitter includes a balloon catheter 1, a movable shock wave emitter assembly 2, a transmission box 3 and a plug 4.

[0027] The balloon catheter 1 includes a balloon 101, an inner tube 102, an outer tube 104, a Luer seat 105, a sealing ring 106 and a rigid connecting tube 109. There is a liquid inlet channel 108, a wire outlet channel 111 and a Luer seat liquid channel 112 inside the Luer seat 105. The sealing ring 106 is assembled in the wire outlet channel 111, and a fixed sealing connection is formed between the outer wall of the sealing ring 106 and the inner wall of the wire outlet channel 111. This fixed sealing connection can be assembled and made by means such as glue bonding, secondary injection molding, interference fit, etc. The distal end of the balloon 101 is hermetically and fixedly connected to the distal end of the inner tube 102 by hot melting or laser welding. The proximal end of the balloon 101 is hermetically and fixedly connected to the distal end of the outer tube 104 by hot melting or laser welding. The proximal end of the outer tube 104 and the Luer seat liquid channel 112 are hermetically and fixedly connected by glue bonding. The proximal end of the inner tube 102 and the distal end of the rigid connecting tube 109 are hermetically and fixedly connected by glue. The inner cavity of the inner tube 102 and the inner cavity of the rigid connecting tube 109 form a guide wire cavity 103. The inner walls of the balloon 101 and the outer tube 104 and the outer wall of the inner tube form a catheter liquid cavity 107. (As shown, the lower end of the illustrated component is the distal end, and the upper end is the proximal end. The above-mentioned hermetic and fixed connection refers to a sealing connection that restricts all relative degrees of freedom between each other and does not generate relative movement and can withstand the required hydraulic pressure).

[0028] As Figures 3 to 5As shown, the movable shock wave emitter assembly 2 includes an emitter 201, a flexible rotating shaft tube 202, a rigid rotating shaft tube 203, emitter wires 204, and an inner tube sealing ring 205. The emission point 2011 of the emitter is located on the emitter 201. The emitter 201 and the emitter wires 204 are fixed to the outer wall of the flexible rotating shaft tube 202. There is a cavity, namely the inner cavity 2031 of the rigid rotating shaft tube, inside the rigid rotating shaft tube 203. The flexible rotating shaft tube 202 penetrates into the inner cavity 2031 of the rigid rotating shaft tube, and a gap 206 is formed between its outer wall and the inner wall of the inner cavity 2031 of the rigid rotating shaft tube, allowing the emitter wires 204 to pass through. Glue is filled in the gap 206 so that the flexible rotating shaft tube 202, the emitter wires 204, and the rigid rotating shaft tube 203 form a fixed and sealed connection. The inner tube sealing ring 205 is installed in the inner cavity 2031 of the rigid rotating shaft tube, and the two form a fixed and sealed connection through in-mold insert injection molding, glue, or other means. There is a wire groove 2051 on the inner tube sealing ring 205. The wire groove 2051 and the inner wall of the inner cavity 2031 of the rigid rotating shaft tube form a wire passing cavity 207 that allows the emitter wires 204 to pass through. After the emitter wires 204 pass through, the wire passing cavity 207 is sealed with glue. In summary, all the parts form an integrated movable shock wave emitter assembly 2 through fixed connections.

[0029] As Figures 6 to 8 shown, the transmission box 3 includes a housing fixed seat 301, a driving member, and a moving transmission assembly 303. The moving transmission assembly 303 is slidably connected to the housing fixed seat 301. The driving member is fixed on the housing fixed seat 301 and drives the moving transmission assembly 303 to move. The specific sliding structure in this embodiment is as follows: A sliding guiding mechanism 30332 is further provided at the bottom of the sliding base 3033. There is a moving sliding groove 3011 on the housing fixed seat 301. The sliding guiding mechanism 30332 is inserted into the moving sliding groove 3011 so that the moving transmission assembly 303 forms a sliding connection with the housing fixed seat 301.

[0030] As a further preferred solution, both the sliding guiding mechanism 30332 and the moving sliding groove 3011 are designed to have a structure with a smaller upper opening and a larger lower opening, so that the moving transmission assembly 303 and the housing fixed seat 301 can only slide back and forth along the length direction of the two, and the remaining degrees of freedom are restricted. Specifically, the sliding guiding mechanism 30332 is a convex strip with a triangular, trapezoidal, or circular cross-section. The cross-sectional shape of the moving sliding groove 3011 is the same as that of the sliding guiding mechanism 30332, and the sliding guiding mechanism 30332 and the moving sliding groove 3011 are in clearance fit.

[0031] The driving member is an electric push rod or a movement control motor 302. The movement transmission assembly 303 includes a sliding base 3033, and the sliding base 3033 is slidably connected to the housing fixing base 301. The electric push rod is connected to the sliding base 3033, or the movement control motor 302 and the sliding base 3033 are in transmission cooperation through a gear rack 30331 or a worm and worm gear.

[0032] In this embodiment, the specific driving structure of the sliding base 3033 is as follows. A rack 30331 is fixed on the sliding base 3033, and a movement transmission gear 304 is fixed on the output shaft of the movement control motor 302. The movement transmission gear 304 is in meshing transmission with the rack 30331.

[0033] The movement transmission assembly 303 further includes a rotation control motor 3031. The rotation control motor 3031 is fixed on the sliding base 3033. A rotation transmission gear 3032 is fixed on the output shaft of the rotation control motor 3031. A tail gear 2033 is fixed to the proximal end of the rigid rotating shaft tube 203. The rotation control motor 3031 drives the rigid rotating shaft tube 203 to rotate through the meshing of the rotation transmission gear 3032 and the tail gear 2033.

[0034] In the present invention, the transmitter wire 204, the motor control and power supply wire are connected to the plug 4, and the plug 4 is connected to the host control for energy and control signal transmission.

[0035] In the present invention, the movable shock wave emitter assembly 2 penetrates into the balloon catheter 1 along the tail of the balloon catheter 1, and is assembled between the inner tube 102 and the inner cavity of the balloon catheter 1 with a gap between the inner wall of the balloon catheter 1 and the outer wall of the inner tube 102 to allow liquid to pass through. The movable shock wave emitter assembly 2 can rotate or slide relative to the balloon catheter 1. The inner cavity of the sealing ring 106 tightly wraps the outer wall of the rigid rotating shaft tube 203, so that the liquid in all liquid channels cannot overflow between the inner cavity of the sealing ring 106 and the outer wall of the rigid rotating shaft tube 203, and can withstand a certain hydraulic pressure. The sealing ring 106 is made of an elastic material with sealing performance and good self-lubricity. It not only has sealing performance but also allows the rigid rotating shaft tube 203 to rotate and slide relative to the sealing ring 106, achieving dynamic sealing. Similarly, the inner cavity of the inner tube sealing ring 205 tightly wraps the outer wall of the rigid connecting tube 109, so that the liquid in all liquid channels cannot overflow between the inner cavity of the inner tube sealing ring 205 and the outer wall of the rigid connecting tube 109, and can withstand a certain hydraulic pressure. The inner tube sealing ring 205 is made of an elastic material with sealing performance and good self-lubricity. It not only has sealing performance but also allows the outer wall of the rigid connecting tube 109 to rotate and slide relative to the inner tube sealing ring 205, achieving dynamic sealing. At this time, since all components of the balloon catheter 1 are sealedly connected, and the two connections between the balloon catheter 1 and the movable shock wave emitter assembly 2 are both dynamically sealed connections, the liquid can maintain a certain pressure after entering the internal cavity of the balloon catheter 1 from the liquid inlet channel 108.

[0036] The proximal end of the Luer seat 105 on the balloon catheter 1 is fixed to the housing fixing seat 301 of the transmission box 3. The specific structure is as follows: One end of the housing fixing seat 301 is provided with a fixing notch 3013, the Luer seat 105 is clamped in the fixing notch 3013, and a moving component limiting rib 3014 is further provided at one end of the fixing notch 3013 close to the moving transmission component 303. A moving limiting ring 2032 is also fixed on the rigid rotating shaft tube 203, and the moving limiting ring 2032 is located between the sealing ring 106 and the moving component limiting rib 3014. A guide wire Luer connector 3012 is also provided on the housing fixing seat 301, and the proximal end of the rigid connecting tube 109 is fixedly connected to the guide wire Luer connector 3012; the proximal end of the rigid rotating shaft tube 203 is connected to the moving transmission component 303, and the moving transmission component 303 drives the rigid rotating shaft tube 203 to rotate.

[0037] One end of the sliding base 3033 is further provided with a convex block, on which an arc-shaped groove A is provided. A rotation limiting ring 2034 is fixed to the proximal end of the rigid rotating shaft tube 203. The rotation limiting ring 2034 is arranged in the arc-shaped groove A. A cover plate 3034 is also fixed to the convex block, and an arc-shaped groove B is also formed in the cover plate 3034. The arc-shaped groove A and the arc-shaped groove B form an annular groove, and the annular groove cooperates with the rotation limiting ring 2034, so that the rigid rotating shaft tube 203 can axially move along with the moving transmission assembly 303 and rotate relative to the moving transmission assembly 303.

[0038] The working principle of the present invention is as follows: The liquid medium required for shock wave generation is injected into the inner cavity of the balloon catheter 1 from the liquid inlet cavity 108. Since all parts in the inner cavity of the balloon catheter 1 are hermetically connected and dynamic sealing treatments are performed at the two possible leakage joints with the movable shock wave emitter assembly 2, the inner cavity of the balloon catheter 1 can withstand the required hydraulic pressure. When the required hydraulic pressure is reached, the plug 4 is connected to the host computer, and the host computer transmits energy to the emitter wire 204 through the plug 4, and then transmits it to the emitter 201. The emitter emission point 2011 on the emitter 201 interacts with the liquid medium to generate shock wave energy.

[0039] When the rotation control motor 3031 rotates, the torque is transmitted to the tail gear 2033 through the rotation transmission gear 3032 to drive its rotation. The tail gear 2033 is fixedly connected to the movable shock wave emitter assembly 2, so as to drive the entire movable shock wave emitter assembly 2 to rotate. The emitter emission point 2011 on the emitter 201 at its front end also rotates accordingly, so that the shock wave is emitted in the 360-degree circumferential direction. When the movement control motor 302 rotates, the movement transmission gear 304 transmits the torque to the rack 30331, and the rack converts the rotational movement into a linear movement back and forth, so as to drive the entire moving transmission assembly 303 to move back and forth. Since the movable shock wave emitter assembly 2 can only rotate relative to the moving transmission assembly 303 and other degrees of freedom are restricted, when the moving transmission assembly 303 moves back and forth, it also drives the movable shock wave emitter assembly 2 to move, so that the emitter emission point 2011 on the emitter 201 at its front also moves back and forth in the balloon 101, so that the shock wave energy can move and propagate in the balloon; since the movement range of the emitter emission point 2011 cannot exceed the effective length range of the balloon, the movement limiting ring 2032 on the rigid rotating shaft tube 203 is located between the sealing ring 106 and the movement component limiting rib 3014. Since both the sealing ring 106 and the movement component limiting rib 3014 are fixed, the rigid rotating shaft tube 203 can only move within the length range of the two.

[0040] The above can achieve the purpose that the operator can move or rotate the angle and position of shock wave generation as needed during use.

[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An intravascular shock wave catheter with a rotatable and movable shock wave emitter, comprising a balloon catheter (1) and a shock wave emitter assembly (2). The balloon catheter (1) includes a balloon (101), an outer tube (104), and a Luer seat (105) connected in sequence, and an inner tube (102) passing through the Luer seat (105), the outer tube (104), and the balloon (101). The distal end of the inner tube (102) is hermetically and fixedly connected to the distal end of the balloon (101). It is characterized in that: The shock wave emitter assembly (2) includes a rotating shaft tube and an emitter (201) fixed on the outer wall of the rotating shaft tube. The rotating shaft tube is sleeved outside the inner tube (102), and there is a gap for liquid to pass between the rotating shaft tube and the inner tube (102), as well as the Luer seat (105), the outer tube (104), and the balloon (101). A sealing ring (106) is provided between the Luer seat (105) and the rotating shaft tube, and an inner tube sealing ring (205) is provided between the rotating shaft tube and the inner tube (102); an emitter wire (204) is also provided between the rotating shaft tube and the inner tube (102). One end of the emitter wire (204) is connected to the emitter (201), and the other end passes through the inner tube sealing ring (205); It further includes a transmission box (3). The transmission box (3) includes a housing fixed seat (301), a driving member, and a moving transmission component (303). The proximal end of the Luer seat (105) is fixed on the housing fixed seat (301), and a guide wire Luer connector (3012) is also provided on the housing fixed seat (301). The proximal end of the inner tube (102) is fixedly connected to the guide wire Luer connector (3012); the moving transmission component (303) is slidably connected to the housing fixed seat (301). A rotating mechanism is provided on the moving transmission component (303). The proximal end of the rotating shaft tube is connected to the moving transmission component (303). The driving member is fixed on the housing fixed seat (301), and the rotating shaft tube is rotated and axially slid by driving the moving transmission component (303); The emitter wire (204), the control and power supply wires of the driving member are all connected to the host through a plug (4).

2. The intravascular shock wave catheter with a rotatable and movable shock wave transmitter according to claim 1, characterized in that: The driving member is an electric push rod or a moving control motor (302). The moving transmission component (303) includes a sliding base (3033). The sliding base (3033) is slidably connected to the housing fixed seat (301). The electric push rod is connected to the sliding base (3033), or the moving control motor (302) is in transmission cooperation with the sliding base (3033) through a gear rack (30331) or a worm and gear.

3. The intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 2, characterized in that: The rotating mechanism is a rotation control motor (3031). The rotation control motor (3031) is fixed on the sliding base (3033). A rotation transmission gear (3032) is fixed on the output shaft of the rotation control motor (3031). A tail gear (2033) is fixed at the proximal end of the rotating shaft tube. The rotation control motor (3031) drives the rotating shaft tube to rotate through the meshing of the rotation transmission gear (3032) and the tail gear (2033).

4. The intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 3, characterized in that: One end of the sliding base (3033) is further provided with a convex block, on which an arc-shaped groove A is provided. A rotation limiting ring (2034) is fixed to the proximal end of the rotating shaft tube, and the rotation limiting ring (2034) is arranged in the arc-shaped groove A. A cover plate (3034) is also fixed to the convex block, and an arc-shaped groove B is also formed in the cover plate (3034). The arc-shaped groove A and the arc-shaped groove B form an annular groove, and the annular groove cooperates with the rotation limiting ring (2034), so that the rotating shaft tube can move axially along with the moving transmission assembly (303) and rotate relative to the moving transmission assembly (303).

5. The intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 2, characterized in that: A sliding guiding mechanism (30332) is further provided at the bottom of the sliding base (3033). There is a moving sliding groove (3011) on the housing fixing seat (301). The sliding guiding mechanism (30332) is inserted into the moving sliding groove (3011) so that the moving transmission assembly (303) forms a sliding connection with the housing fixing seat (301).

6. The intravascular shock wave catheter with a rotatable and movable shock wave transmitter according to claim 5, characterized in that: The sliding guiding mechanism (30332) is a convex strip with a triangular, trapezoidal or circular cross-section. The cross-sectional shape of the moving sliding groove (3011) is the same as that of the sliding guiding mechanism (30332), and the sliding guiding mechanism (30332) and the moving sliding groove (3011) are in clearance fit.

7. The intravascular shock wave catheter with a rotatable and movable shock wave transmitter according to claim 2, characterized in that: A rack (30331) or a worm is fixed on the sliding base (3033). A moving transmission gear (304) or a worm gear is fixed on the output shaft of the moving control motor (302). The moving transmission gear (304) meshes with the rack (30331) for transmission, or the worm gear meshes with the worm for transmission.

8. The intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 1, characterized in that: The rotating shaft tube includes a flexible rotating shaft tube (202) and a rigid rotating shaft tube (203) which are fixedly connected to each other. The transmitter (201) and the transmitter wire (204) are fixed on the outer wall of the flexible rotating shaft tube (202), and the transmitter wire (204) penetrates through the connection part of the flexible rotating shaft tube (202) and the rigid rotating shaft tube (203). The inner tube sealing ring (205) is arranged in the rigid rotating shaft tube (203).

9. The intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 8, characterized in that: One end of the housing fixing seat (301) is provided with a fixing notch (3013), and the Luer seat (105) is clamped in the fixing notch (3013). A moving component limiting rib (3014) is further provided at one end of the fixing notch (3013) close to the moving transmission assembly (303). A moving limiting ring (2032) is also fixed on the rigid rotating shaft tube (203), and the moving limiting ring (2032) is located between the sealing ring (106) and the moving component limiting rib (3014).

10. An intravascular shock wave catheter with a rotatable and movable shock wave emitter according to claim 8, characterized in that: The inner tube sealing ring (205) and the rigid rotating shaft tube (203) are fixedly sealed and connected by in-mold insert injection molding, interference fit or glue. There is a wire groove (2051) on the inner tube sealing ring (205). The wire groove (2051) and the inner wall of the rigid rotating shaft tube (203) form a wire passing cavity (207), and the transmitter wire (204) passes through the wire passing cavity (207) and is sealed with glue.

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