Controller for interventional catheter and intravascular ultrasonic imaging equipment

Abstract

The controller comprises a rotating mechanism and a withdrawing mechanism, the rotating mechanism comprises a rotating driving part, a transmission shaft and a catheter connecting part, the power output end of the rotating driving part is connected with the catheter connecting part through the transmission shaft, and the rotating driving part is used for driving the catheter connecting part to rotate; the rotating driving part, the transmission shaft and the guide pipe connecting part are coaxially arranged, the withdrawing mechanism comprises a withdrawing driving part, a lead screw in transmission connection with the withdrawing driving part and a lead screw nut matched with the lead screw, and the lead screw nut is connected with the rotating mechanism. The rotating mechanism is arranged, the rotating driving part drives the guide pipe connecting part to rotate through the transmission shaft, the driving force loss between the rotating driving part and the guide pipe connecting part is reduced, the overall structure is simple, the transmission control precision is high, the withdrawing mechanism and the withdrawing driving part can drive the lead screw to rotate, and therefore the lead screw nut is driven to move linearly; the rotating mechanism can be driven to move, so that the interventional catheter is driven to withdraw.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a controller for an interventional catheter and an intravascular ultrasonic imaging device. Background Art

[0002] Intravascular ultrasound imaging equipment (IVUS) is a device suitable for various interventional disciplines to scan and image blood vessels. It plays an important auxiliary role in percutaneous coronary intervention surgery, including preoperative evaluation and postoperative optimization. The intravascular ultrasound device includes a host, a controller, and an interventional catheter. Among them, the controller is used to control the movement of the interventional catheter, including rotation and withdrawal. The interventional catheter is equipped with an ultrasonic transducer. The ultrasonic transducer emits ultrasonic waves, which are reflected by the tissue structure at all levels of the blood vessels to form echoes. The ultrasonic system processes the generated echoes to obtain ultrasonic signal images. Throughout the process, the movement of the interventional catheter plays a vital role in the imaging effect.

[0003] In the related art, the overall structure of the rotating mechanism and the retraction mechanism is relatively complex, and the transmission structure in the retraction mechanism includes but is not limited to synchronous belt transmission, screw transmission, gear rack transmission, etc. The overall transmission is relatively complex, which easily leads to low retraction accuracy. Summary of the invention

[0004] Based on this, it is necessary to provide an interventional catheter controller and an intravascular ultrasonic imaging device that have a simple and compact overall structure and can improve the retraction accuracy.

[0005] A controller for an interventional catheter, comprising:

[0006] A rotating mechanism, the rotating mechanism comprising a rotating driving part, a transmission shaft and a catheter connecting part, the catheter connecting part is used to be connected to the interventional catheter, the power output end of the rotating driving part is connected to the catheter connecting part through the transmission shaft, the rotating driving part is used to drive the catheter connecting part to rotate, and the rotating driving part, the transmission shaft and the catheter connecting part are coaxially arranged;

[0007] The retraction mechanism comprises a retraction driving part, a screw rod transmission-connected to the retraction driving part, and a screw rod nut matched with the screw rod, wherein the screw rod nut is connected to the rotating mechanism.

[0008] In one embodiment, the rotating mechanism further includes a coupling, and the coupling is connected between the power output end of the rotating drive unit and the transmission shaft.

[0009] In one embodiment, the rotating mechanism further includes a rotating mounting seat, the transmission shaft is connected to the rotating mounting seat via a connecting bearing; and the rotating driving unit is mounted on the rotating mounting seat.

[0010] In one embodiment, the rotary drive unit, the transmission shaft, the coupling and the connecting bearing are all coaxially arranged.

[0011] In one embodiment, the rotating mechanism further comprises a wave spring, wherein the wave spring is disposed between the rotating mounting seat and the connecting bearing, and abuts against the rotating mounting seat and the connecting bearing;

[0012] And / or, the rotating mechanism further includes a slip ring, the slip ring is sleeved on the transmission shaft, and the slip ring is used to be connected to the interventional catheter.

[0013] In one embodiment, the retraction drive unit is connected to the screw rod through a transmission structure; the transmission structure includes a transmission belt and a transmission pulley, the transmission belt is connected to the retraction drive unit, and the transmission pulley is connected to the screw rod and the transmission belt; and / or,

[0014] The lead screw adopts a trapezoidal lead screw.

[0015] In one embodiment, the rotation center axis of the retraction mechanism and the rotation center axis of the rotation mechanism are parallel to each other.

[0016] In one embodiment, the interventional catheter controller further includes a mounting base, the retraction drive unit and the screw rod are both fixedly connected to the mounting base, and the screw rod nut is slidably connected to the mounting base via a sliding assembly.

[0017] In one embodiment, the interventional catheter controller further includes a position detection module, and the position detection module is disposed on the mounting base, and the position detection module is disposed close to the rotating mechanism.

[0018] The present application also provides an intravascular ultrasound imaging device, including a host, an interventional catheter, and a controller for the interventional catheter as described above.

[0019] In the above scheme, by setting a rotating mechanism, the rotating drive unit drives the catheter connecting part to rotate through the transmission shaft, thereby driving the interventional catheter to rotate, reducing the driving force loss between the rotating drive unit and the catheter connecting part, making the overall structure simple, and the rotating drive unit, the transmission shaft and the catheter connecting part are coaxially arranged. The coaxial design can improve the efficiency of power transmission and reduce force loss. At the same time, the coaxiality can improve the stability of the interventional catheter connection and reduce vibration. By setting a retraction mechanism, the retraction drive unit can drive the screw to rotate, thereby driving the screw nut to move in a straight line. When moving, the rotating mechanism moves with the movement of the screw nut, thereby driving the interventional catheter to retract. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] FIG. 1 is a schematic structural diagram of a controller for an interventional catheter shown in an embodiment of the present application.

[0023] FIG. 2 is a schematic diagram of a partial structure of a controller for an interventional catheter shown in an embodiment of the present application.

[0024] FIG. 3 is a cross-sectional view of the structure of a rotating mechanism shown in an embodiment of the present application.

[0025] Description of Reference Numerals

[0026] 10. Controller for interventional catheter; 100. Rotation mechanism; 110. Rotation drive unit; 120. Catheter connection unit; 130. Transmission shaft; 140. Coupling; 150. Rotation mounting seat; 160. Connecting bearing; 170. Wave spring; 180. Slip ring; 200. Retraction mechanism; 210. Retraction drive unit; 220. Screw; 230. Screw nut; 240. Transmission structure; 241. Transmission belt; 242. Transmission pulley; 300. Mounting base; 400. Sliding assembly; 410. Guide rail; 420. Slider. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0033] Referring to FIG. 1 and FIG. 2 , the embodiment of the present application relates to an interventional catheter controller 10, including a rotation mechanism 100 and a retraction mechanism 200. The rotation mechanism 100 is used to connect with the interventional catheter and can drive the interventional catheter to rotate. The retraction mechanism 200 is connected to the rotation mechanism 100 and is used to drive the interventional catheter to retract.

[0034] Referring to FIG. 1 and FIG. 2 , the rotating mechanism 100 includes a rotating driving unit 110, a transmission shaft 130, and a catheter connecting unit 120. The catheter connecting unit 120 is used to connect with the interventional catheter. The power output end of the rotating driving unit 110 is connected to the catheter connecting unit 120 through the transmission shaft 130. The rotating driving unit 110 is used to drive the catheter connecting unit 120 to rotate. The rotating driving unit 110, the transmission shaft 130, and the catheter connecting unit 120 are coaxially arranged. Specifically, the rotating driving unit 110 uses a driving motor.

[0035] The rotation drive unit 110 drives the catheter connection unit 120 to rotate, thereby driving the interventional catheter to rotate. The power output by the rotation drive unit 110 is directly transmitted to the catheter connection unit 120 through the transmission shaft 130, reducing the driving force loss between the rotation drive unit 110 and the catheter connection unit 120. The rotation drive unit 110, the transmission shaft 130 and the catheter connection unit 120 are coaxially arranged. The coaxial design can improve the efficiency of power transmission and reduce the loss of force. At the same time, the coaxial design can improve the stability of the interventional catheter connection and reduce vibration, thereby ensuring the rotation accuracy of the interventional catheter. The rotation mechanism 100 is arranged above the withdrawal mechanism 200. The rotation mechanism 100 and the withdrawal mechanism 200 are overlapped in the axial direction of the transmission shaft 130, which can reduce the overall width.

[0036] 1, 2 and 3, the retraction mechanism 200 includes a retraction drive unit 210, a screw rod 220 connected to the retraction drive unit 210, and a screw nut 230 matched with the screw rod 220, and the screw nut 230 is connected to the rotating mechanism 100. The retraction drive unit 210 is used to drive the screw rod 220 to rotate, so as to drive the screw nut 230 to move, thereby driving the rotating mechanism 100 to move. Specifically, the retraction drive unit 210 adopts a driving motor.

[0037] The retraction drive unit 210 can drive the screw 220 to rotate, thereby driving the screw nut 230 to move linearly. During the movement, the rotating mechanism 100 moves along with the movement of the screw nut 230, thereby driving the interventional catheter to retract. The interventional catheter and the interventional catheter controller 10 need to be isolated by a sterile bag. In this application, only the sterile bag is a consumable, and the controller of this application can be recycled multiple times, which can effectively reduce the cost of use.

[0038] In this embodiment, the lead screw adopts a trapezoidal lead screw. By providing the trapezoidal lead screw and the lead screw nut 230, the trapezoidal lead screw has a self-locking property, and no additional self-locking structure is required, so that the overall structure is compact and the retraction accuracy can be improved.

[0039] Please refer to FIG. 1 , FIG. 2 and FIG. 3 . According to some embodiments of the present application, optionally, the rotating mechanism 100 further includes a coupling 140 . The coupling 140 is disposed between the power output end of the rotating driving unit 110 and the transmission shaft 130 .

[0040] 1 , 2 and 3 , according to some embodiments of the present application, optionally, the rotating mechanism 100 further includes a rotating mounting seat 150 connected to the screw nut 230 , and the transmission shaft 130 is connected to the rotating mounting seat 150 via a connecting bearing 160 . The rotating driving unit 110 is mounted on the rotating mounting seat 150 .

[0041] The rotary drive unit 110, the transmission shaft 130, the coupling 140 and the connecting bearing 160 are all coaxially arranged. The coaxial design can improve the efficiency of power transmission and reduce the loss of force. At the same time, the coaxial design can improve the stability of the connection of the interventional catheter and reduce vibration. Specifically, the rotary mounting seat 150 is detachably connected to the screw nut 230, which can facilitate the maintenance and replacement of the rotating mechanism 100. The connecting bearing 160 is arranged at the end of the transmission shaft 130 away from the rotary drive unit 110 to provide support for the end of the transmission shaft 130 away from the rotary drive unit 110.

[0042] Referring to FIG. 1 , FIG. 2 and FIG. 3 , according to some embodiments of the present application, optionally, the rotating mechanism further includes a wave spring 170, which is disposed between the rotating mounting seat 150 and the connecting bearing 160 and abuts against the rotating mounting seat 150 and the connecting bearing 160. The wave spring 170 can eliminate the axial clearance of the connecting bearing 160.

[0043] Referring to FIG. 1 , FIG. 2 and FIG. 3 , according to some embodiments of the present application, optionally, the rotating mechanism 100 further includes a slip ring 180, which is sleeved on the transmission shaft 130. The slip ring 180 is used to connect with the interventional catheter. Specifically, the slip ring 180 is connected with the interventional catheter and the hardware circuit board, thereby realizing the transmission of electrical energy and signals.

[0044] Slip ring 180, also known as rotating electrical connector or collector ring, is an electrical component used to transmit power, signals and data in rotating mechanism 100. It is usually made of conductive material and adopts a special structural design to continuously transmit power and signals during rotation without twisting the wires. The basic structure of slip ring 180 consists of two parts: a fixed part and a rotating part. The fixed part is installed in a fixed position of rotating mechanism 100, while the rotating part rotates with the rotation of rotating mechanism 100. The two parts realize the transmission of power and signals through sliding contact between the contact surfaces.

[0045] Please refer to Figures 1, 2 and 3. According to some embodiments of the present application, optionally, the retraction drive unit 210 is connected to the screw rod 220 through a transmission structure 240. Specifically, the transmission structure 240 includes a transmission belt 241 and a transmission pulley 242. The transmission belt 241 is connected to the retraction drive unit 210, and the transmission pulley 242 is connected to the screw rod 220 and the transmission belt 241. By using the transmission belt 241, the transmission pulley 242, the screw rod 220 and the screw nut 230, the retraction accuracy of the present application is high and the operation is relatively stable.

[0046] Please refer to FIG. 1 , FIG. 2 and FIG. 3 . According to some embodiments of the present application, optionally, the central axis of rotation of the retracting mechanism 200 and the central axis of rotation of the rotating mechanism 100 are parallel to each other.

[0047] Referring to Fig. 1, Fig. 2 and Fig. 3, according to some embodiments of the present application, optionally, the interventional catheter controller 10 further includes a mounting base 300, the withdrawal drive unit 210 and the screw rod 220 are both fixedly connected to the mounting base 300, and the screw rod nut 230 is slidably connected to the mounting base 300 through a sliding assembly 400. Specifically, the sliding assembly 400 includes a guide rail 410 disposed on the mounting base 300 and a slider 420 matched with the guide rail 410, and the slider 420 is connected to the screw rod nut 230.

[0048] The extension direction of the guide rail 410 is parallel to the extension direction of the screw rod 220. By setting the guide rail 410 and the slider 420, a guiding function can be played to prevent the rotation mechanism 100 from being offset during movement, thereby ensuring the retraction accuracy and stability of the interventional catheter.

[0049] Please refer to Fig. 1, Fig. 2 and Fig. 3. According to some embodiments of the present application, optionally, the mounting base 300 has a first side and a second side that are arranged opposite to each other, the retraction drive unit 210 is arranged on the first side of the mounting base 300, and the screw 220 and the screw nut 230 are arranged on the second side of the mounting base 300. Specifically, the transmission pulley 242 is located on the second side of the mounting base 300, the power output end of the retraction drive unit 210 is located on the first side of the mounting base 300, and the transmission pulley 242 and the power output end of the retraction drive unit 210 are symmetrically arranged with respect to the mounting base 300, and the transmission belt 241 is connected to the transmission pulley 242 and the power output end of the retraction drive unit 210, which can play a role in transmitting power.

[0050] By arranging the retraction drive unit 210 on the first side of the mounting base 300, and arranging the screw rod 220 and the screw rod nut 230 on the second side of the mounting base 300, the overall space occupied is small and the structure is more compact. A hardware circuit board is also arranged on the first side of the mounting base 300, and the above structure can make the operation of the present application more stable.

[0051] Referring to FIG. 1 , FIG. 2 and FIG. 3 , according to some embodiments of the present application, optionally, the interventional catheter controller 10 further includes a position detection module, which is disposed on the mounting base 300 and is disposed near the rotating mechanism 100. The position detection module is used to detect whether the rotating mechanism 100 is in the initial position. Specifically, the position detection module is communicatively connected to the hardware circuit board, and the hardware circuit board is connected to control the withdrawal drive unit 210.

[0052] The position detection module detects whether the rotating mechanism 100 is in the initial position and transmits a signal to the hardware circuit board, and the hardware circuit board controls the operation of the retraction drive unit 210 according to the transmitted signal. When the position detection module detects that the rotating mechanism 100 is not in the initial position, the retraction drive unit 210 operates to move the rotating mechanism 100 to the initial position.

[0053] 1, 2 and 3, according to some embodiments of the present application, optionally, the catheter connection part 120 is used to clamp the interventional catheter or clamp the interventional catheter. In this embodiment, the catheter connection part 120 has a mounting groove, and the interventional catheter is clamped and connected in the mounting groove.

[0054] The present application also provides an intravascular ultrasound imaging device, comprising a host, an interventional catheter, and the interventional catheter controller 10 as described above. Specifically, the host is connected to the interventional catheter controller 10.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A controller for an interventional catheter, characterized in that: include: A rotating mechanism, the rotating mechanism comprising a rotating driving part, a transmission shaft and a catheter connecting part, the catheter connecting part is used to be connected to the interventional catheter, the power output end of the rotating driving part is connected to the catheter connecting part through the transmission shaft, the rotating driving part is used to drive the catheter connecting part to rotate, and the rotating driving part, the transmission shaft and the catheter connecting part are coaxially arranged; The retraction mechanism comprises a retraction driving part, a screw rod transmission-connected to the retraction driving part, and a screw rod nut matched with the screw rod, wherein the screw rod nut is connected to the rotating mechanism.

2. The interventional catheter controller according to claim 1, characterized in that: The rotating mechanism further includes a coupling, which is connected between the power output end of the rotating drive unit and the transmission shaft.

3. The interventional catheter controller according to claim 2, characterized in that: The rotating mechanism further comprises a rotating mounting seat, the transmission shaft is connected to the rotating mounting seat via a connecting bearing; and the rotating driving part is mounted on the rotating mounting seat.

4. The interventional catheter controller according to claim 3, characterized in that: The rotary drive unit, the transmission shaft, the coupling and the connecting bearing are all coaxially arranged.

5. The interventional catheter controller according to claim 3, characterized in that: The rotating mechanism further includes a wave spring, which is disposed between the rotating mounting seat and the connecting bearing and abuts against the rotating mounting seat and the connecting bearing; And / or, the rotating mechanism further includes a slip ring, the slip ring is sleeved on the transmission shaft, and the slip ring is used to be connected to the interventional catheter.

6. The interventional catheter controller according to claim 1, characterized in that: The retraction drive unit is connected to the screw rod through a transmission structure; the transmission structure includes a transmission belt and a transmission pulley, the transmission belt is connected to the retraction drive unit, and the transmission pulley is connected to the screw rod and the transmission belt; and / or, The lead screw adopts a trapezoidal lead screw.

7. The interventional catheter controller according to claim 1, characterized in that: The rotation center axis of the retracting mechanism and the rotation center axis of the rotating mechanism are parallel to each other.

8. The interventional catheter controller according to claim 1, characterized in that: It also includes a mounting base, the retraction drive part and the screw rod are fixedly connected to the mounting base, and the screw rod nut is slidably connected to the mounting base through a sliding assembly.

9. The interventional catheter controller according to claim 8, characterized in that: It also includes a position detection module, which is arranged on the mounting base and is close to the rotating mechanism.

10. An intravascular ultrasound imaging device, characterized in that: The invention comprises a host, an interventional catheter and a controller for the interventional catheter as claimed in any one of claims 1 to 9.

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