Ultrasound catheter

Abstract

The utility model provides an ultrasonic catheter which comprises a handle and a catheter body, the handle comprises a handle shell, a rotation control part, a bending control part and a movement control part, two ends of the catheter body are provided with a movable end and a connecting end, the rotation control part is rotatably connected to the handle shell, the connecting end extends into the handle shell, and the bending control part is connected with the movable end. The connecting end is connected with the rotating control part so that the rotating control part can drive the catheter body to rotate, and the bending adjusting control part is rotationally connected to the handle shell and connected with the movable end so that the bending adjusting control part can drive the movable end to bend in four directions. The moving control part is connected to the handle shell and moves on the handle shell in the axial direction of the catheter body, and the moving control part is connected to the connecting end. The catheter body can be rotated, bent and moved, so that the handle can be held by one hand for operation and use, and the use and the operation are simpler and more convenient; and meanwhile, the detection position can be accurately reached.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an ultrasonic catheter. Background Art

[0002] Radiofrequency catheter ablation is one of the important means of treating atrial fibrillation. During the operation, it is a mature technology to rely on X-ray fluoroscopy and three-dimensional electroanatomical mapping system to locate the catheter, build a heart model, confirm the ablation target, etc. However, the above methods cannot provide a completely clear and real-time picture of the internal anatomical structure of the heart, and may cause perioperative complications such as cardiac tamponade and pulmonary vein stenosis. At the same time, X-ray fluoroscopy brings certain radiation damage to patients and operators, especially for pregnant women and adolescents.

[0003] ICE (intracardiac echocardiography) is intracardiac ultrasound technology. Different from traditional extracorporeal ultrasound diagnostic technology, intracardiac ultrasound technology places an 8F-10F ultrasound catheter into the heart cavity through peripheral blood vessels, and uses the ultrasound probe at the catheter tip to accurately obtain the heart's anatomical structure at close range and in real time, and can simultaneously display cardiac hemodynamics, and dynamically evaluate local myocardial and overall heart function in real time.

[0004] Currently common ultrasonic catheters, such as those described in patent CN 219661757 U, are usually controlled by driving a traction wire fixed at the distal end of the catheter head end through a bending control component on a control handle, which can perform bending control. Since it can only perform bending control, the distal end of the catheter cannot meet higher requirements and cannot accurately reach the target position and angle.

[0005] Another example is the catheter drive device described in patent CN 115736992 A to control the shape and direction of the distal end of the catheter. However, this device has a large workbench on which a base, a platform, a motor, a reducer, a guide rail, a locking mechanism, etc. are arranged. The distal end of the catheter is controlled to rotate and move by an external motor, which is very bulky and inconvenient to operate flexibly. In addition, due to the complexity of the system, mechanical or electrical failures may occur, which increases the risk and uncontrollable factors of the operation. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an ultrasonic catheter in order to overcome the problems that the ultrasonic catheter in the prior art cannot accurately reach the target position and angle, the equipment is bulky and complicated, and it is inconvenient for doctors to use.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] An ultrasonic catheter comprises a handle and a catheter body, wherein the handle comprises a handle shell, a rotation control component, a bending control component and a movement control component, wherein both ends of the catheter body have a movable end and a connecting end, wherein the rotation control component is rotatably connected to the handle shell, wherein the connecting end extends into the handle shell, and wherein the connecting end is connected to the rotation control component so that the rotation control component drives the catheter body to rotate, wherein the bending control component is rotatably connected to the handle shell, and wherein the bending control component is connected to the movable end so that the bending control component drives the movable end to bend in four directions, wherein the movement control component is connected to the handle shell and moves on the handle shell along the axial direction of the catheter body, and wherein the movement control component is connected to the connecting end.

[0009] In this solution, the above-mentioned structural form is adopted, and the two ends of the catheter body have movable ends and connecting ends. The handle includes a handle shell, a rotation control component, a bending control component and a movement control component. By rotating the rotation control component, the catheter body is driven to rotate through the connecting end; by rotating the bending control component, the force is applied to the movable end and four-way bending movement is performed as required, that is, it can be bent forward and backward and left and right; the horizontal movement control component is moved along the axial direction of the catheter body, so that the force is applied to the connecting end and the catheter body is moved to the required position. The rotation, bending and movement of the catheter body are respectively realized by the rotation control component, the bending control component and the movement control component, and are all integrated on the handle shell, so that the handle can be held and operated by one hand, and the operation is simpler and more convenient; at the same time, it is ensured that the detection position is accurately reached.

[0010] Preferably, the rotation control component includes a rotation knob and a catheter fixing shaft, the rotation knob is sleeved on the catheter fixing shaft, the connecting end is inserted into the catheter fixing shaft and connected to the catheter fixing shaft, so that the rotation of the rotation knob will drive the catheter fixing shaft and the connecting end to rotate together.

[0011] In the present solution, the above-mentioned structural form is adopted, and the rotating knob and the catheter fixing shaft can be rotatably arranged on the handle shell, the inner circumference of the catheter fixing shaft is connected to the connecting end, and the rotating knob is sleeved and connected to the outer circumference of the catheter fixing shaft. By applying a force on the outer circumference of the rotating knob, the rotation of the rotating knob will drive the catheter fixing shaft and the catheter body to rotate together. The overall structure is simple and very convenient to use.

[0012] Preferably, the rotation control component further comprises a rotation locking knob, which is rotatably connected to the handle housing, and after the rotation knob is rotated to a desired position, the rotation locking knob clamps and locks the rotation knob.

[0013] In the present solution, the above-mentioned structural form is adopted. When the rotating knob is rotated to the desired position, the rotating locking knob is turned so that the rotating locking knob will abut against the force on the rotating knob, thereby jamming and locking the rotating knob to avoid rotation of the rotating knob, ensuring that the catheter body will not be offset or misaligned, and the stability is higher.

[0014] Preferably, the rotation locking knob has at least one first locking bevel on the side facing the rotation locking knob, and the rotation locking knob has at least one second locking bevel on the side facing the rotation locking knob, and the first locking bevel is abutted against the second locking bevel by rotation of the rotation locking knob.

[0015] In the present solution, the above-mentioned structural form is adopted. When the rotary knob needs to be rotated and adjusted, the first locking bevel and the second locking bevel are spaced apart and do not abut against each other, so that the rotary knob can be rotated to the desired position. After the rotary knob is rotated to the desired position, the first locking bevel and the second locking bevel are abutted against each other and generate a force on each other by rotating the rotary locking knob, and the rotary knob is stuck and locked and cannot rotate. When the rotary knob needs to be rotated again, the rotary locking knob is rotated in the opposite direction of the locking, so that the first locking bevel and the second locking bevel are disengaged from each other, so that the rotary knob can be rotated and adjusted again. The overall structure is simple and very convenient to use.

[0016] Preferably, the outer circumferential surface of the handle housing has an end face stopper, the rotation locking knob is located between the end face stopper and the rotation knob, and the side of the rotation locking knob facing away from the rotation knob abuts against the end face stopper.

[0017] In the present solution, the above-mentioned structural form is adopted, and the rotary locking knob is located between the end face stopper and the rotary knob. When the rotary locking knob is stuck and locked, one side of the rotary locking knob having the first locking bevel abuts against the rotary knob through the first locking bevel, and the other side abuts against the end face stopper, thereby further strengthening the abutting force of the rotary locking knob on the rotary knob, making the stuck locking more stable and reliable.

[0018] Preferably, the bending control component includes a front and rear bending knob, a left and right bending knob, a first pull wire, a second pull wire, a third pull wire and a fourth pull wire. The front and rear bending knobs and the left and right bending knobs are both rotatably connected to the handle housing. One end of the first pull wire and the second pull wire are both connected to the front and rear bending knobs, and the other end of the first pull wire and the other end of the second pull wire are respectively wound in opposite directions and connected to the front and rear ends of the movable end. One end of the third pull wire and the fourth pull wire are both connected to the left and right bending knobs, and the other end of the third pull wire and the other end of the fourth pull wire are respectively wound in opposite directions and connected to the left and right ends of the movable end.

[0019] In the present solution, the above-mentioned structural form is adopted, and the bending control component can be bent forward and backward and left and right. The front and rear bending knobs, the first pull wire and the second pull wire are used for front and rear bending. The front and rear bending knobs are connected to the handle housing and can rotate freely. One end of the first pull wire and one end of the second pull wire are respectively connected to the front and rear bending knobs. The other end of the first pull wire and the other end of the second pull wire are respectively wound in opposite directions and then pass through the center of the connecting end to connect to the front and rear ends of the movable end. The left and right bending knobs, the third pull wire and the fourth pull wire are used for left and right bending. The left and right bending knobs are connected to the handle housing and can rotate freely. One end of the third pull wire and one end of the fourth pull wire are respectively connected to the left and right bending knobs. The other end of the third pull wire and the other end of the fourth pull wire are respectively wound in opposite directions and then pass through the center of the connecting end to connect to the left and right ends of the movable end. Turning the front and rear bending knobs can tighten or loosen the first pull wire, and the second pull wire can be loosened or tightened accordingly, so that the movable end can be bent forward and backward; turning the left and right bending knobs can tighten or loosen the third pull wire, and the fourth pull wire can be loosened or tightened accordingly, so that the movable end can be bent left and right.

[0020] Preferably, the bending control component also includes a winding column frame, which is located between the front and rear bending knobs and the left and right bending knobs, and the first pull wire and the second pull wire respectively bypass the winding column frame and extend into the handle housing and the catheter body, and the third pull wire and the fourth pull wire respectively bypass the winding column frame and extend into the handle housing and the catheter body.

[0021] In this solution, the above-mentioned structural form is adopted, and the first pull wire, the second pull wire, the third pull wire and the fourth pull wire are respectively wound on the winding column frame, so that the pull wires will not get stuck during use, making it more stable during use; at the same time, it is convenient to install and use the pull wires.

[0022] Preferably, the bending control component also includes a bending locking knob, which is rotatably connected to the handle housing, and the bending locking knob acts on the front and rear bending knobs and the left and right bending knobs to achieve the locking of the front and rear bending knobs and the left and right bending knobs.

[0023] In the present solution, the above-mentioned structural form is adopted, and the bending control component also includes a bending locking knob, which is connected to the handle housing and can rotate freely. The front and rear bending knobs and the left and right bending knobs can also be pressed against each other and locked by turning the bending locking knob. This ensures that the catheter body will not be offset or misaligned, and the stability is higher.

[0024] Preferably, one side of the bending locking knob has a third locking inclined surface for abutting against the front-rear bending knob and / or the left-right bending knob.

[0025] In the present scheme, the above-mentioned structural form is adopted, and the bending locking knob is locked by means of a third locking bevel. When the front and rear bending knobs and the left and right bending knobs are rotated to the desired position, the bending locking knob is rotated so that the third locking bevel will abut against the left and right bending knobs. The left and right bending knobs will be squeezed and exert force on the front and rear bending knobs, so that the left and right bending knobs and the front and rear bending knobs are stuck and locked and cannot rotate, thereby ensuring that the catheter body will not be offset or misaligned, and the stability is higher. At the same time, it is very convenient to use and the overall structure is simple.

[0026] Preferably, the movable control component includes a movable push handle and a connecting rod, the movable push handle is exposed from the handle housing and can move axially along the catheter body on the handle housing, the movable push handle is connected to the connecting rod, and the connecting rod is located in the handle housing and connected to the connecting end.

[0027] In the present solution, the above-mentioned structural form is adopted, and the movable push handle is a protrusion exposed from the handle shell. When the catheter body needs to be moved axially, the movable push handle is enabled to move back and forth in the axial direction by applying force on the movable push handle. The movement of the movable push handle will drive the connecting rod and the connecting end to move together, thereby enabling the catheter body to be moved to the desired position, ensuring that the detection position is accurately reached, and the operation is simpler and more convenient.

[0028] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiment of the utility model.

[0029] The positive and progressive effects of the utility model are:

[0030] The ultrasonic catheter of the utility model realizes the rotation, bending and movement of the catheter body respectively through the rotation control component, the bending control component and the movement control component, so that the handle can be held and operated by one hand, and the operation is simpler and more convenient; at the same time, it is guaranteed to accurately reach the detection position. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of an ultrasonic catheter according to an embodiment of the utility model.

[0032] Figure 2 It is a schematic diagram of the structure of the active end of the embodiment of the utility model when in use.

[0033] Figure 3 It is a schematic structural diagram of a rotating knob and a catheter fixing shaft according to an embodiment of the utility model.

[0034] Figure 4 It is a schematic diagram of the exploded structure of the rotation locking knob and the rotation knob according to an embodiment of the utility model.

[0035] Figure 5 It is a partial structural schematic diagram of an ultrasonic catheter according to an embodiment of the utility model.

[0036] Figure 6 This is a schematic diagram of the internal structure of the handle of an embodiment of the utility model.

[0037] Figure 7 This is a partial structural schematic diagram of the bending control component of an embodiment of the utility model.

[0038] Figure 8 It is a schematic diagram of a part of the internal structure of the handle of an embodiment of the utility model.

[0039] Description of reference numerals:

[0040] Handle 10

[0041] Handle housing 11

[0042] End stopper 111

[0043] Rotation control component 12

[0044] Rotate the knob 121

[0045] The second locking slope 1211

[0046] Catheter fixed shaft 122

[0047] Rotation lock knob 123

[0048] First locking slope 1231

[0049] Bending control components 13

[0050] Front and rear adjustment knob 131

[0051] Left and right adjustment knob 132

[0052] First pull line 133

[0053] Second pull line 134

[0054] The third pull line 135

[0055] Fourth pull line 136

[0056] Winding column frame 137

[0057] Adjust the inner block 138

[0058] Adjustment lock knob 139

[0059] The third locking slope 1391

[0060] Mobile control unit 14

[0061] Move push handle 141

[0062] Connecting rod 142

[0063] Catheter body 20

[0064] Activity terminal 21

[0065] Connection terminal 22

[0066] Tail line 30 DETAILED DESCRIPTION

[0067] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the following embodiments.

[0068] like Figures 1 to 8 As shown, the present embodiment discloses an ultrasonic catheter, which includes a handle 10 and a catheter body 20, the handle 10 includes a handle shell 11, a rotation control component 12, a bending control component 13 and a movable control component 14, the two ends of the catheter body 20 have a movable end 21 and a connecting end 22, the rotation control component 12 is rotatably connected to the handle shell 11, the connecting end 22 extends into the handle shell 11, and the connecting end 22 is connected to the rotation control component 12, so that the rotation control component 12 drives the catheter body 20 to rotate, the bending control component 13 is rotatably connected to the handle shell 11, and the bending control component 13 is connected to the movable end 21, so that the bending control component 13 drives the movable end 21 to bend in four directions, the movable control component 14 is connected to the handle shell 11 and moves on the handle shell 11 along the axial direction of the catheter body 20, and the movable control component 14 is connected to the connecting end 22.

[0069] The catheter body 20 has a movable end 21 and a connecting end 22 at both ends. The handle 10 includes a handle housing 11, a rotation control component 12, a bending control component 13 and a movement control component 14. Figure 1 As shown, from left to right are the rotation control component 12, the bending control component 13 and the movement control component 14. Each control component is connected to the handle housing 11 and can move freely. The handle 10 is a hollow structure, and the connection end 22 of the catheter body 20 extends into the handle housing 11. By rotating the rotation control component 12, the catheter body 20 is driven to rotate through the connection end 22; by rotating the bending control component 13, the force is applied to the movable end 21 and four-way bending movement is performed as required, that is, it can be bent forward and backward and left and right; the horizontal movement control component 14 is moved along the axial direction of the catheter body 20, so that the force is applied to the connection end 22 and the catheter body 20 is moved to the required position. The rotation, bending and movement of the catheter body 20 are respectively realized by the rotation control component 12, the bending control component 13 and the movement control component 14 and are integrated on the handle housing 11, so that the handle 10 can be held and operated by one hand, and the operation is simpler and more convenient; at the same time, it is ensured that the detection position is accurately reached.

[0070] The number of the active end 21 in the catheter body 20 is one. Figure 1 and Figure 2 The multiple movable ends 21 shown in the figure only show more clearly that four-way bending can be achieved through the bending control component 13. This design integrates all these functions into the catheter handle 10, and has the functions of pushing and rotating the catheter body 20 on the basis of bending, and adopts a design of large bends and then small bends and a unique bending directional function. The catheter body 20 meets higher requirements. It meets better pushing efficiency, better ability to reach the target detection position and catheter anti-bending properties. Moreover, this rotation and pushing is carried out in a way that ensures that the handle shell 11 does not move and the distal end of the sheath moves, which makes the operation simpler and more convenient, thereby providing better pushing and distal controllability to ensure that the detection position can be accurately reached in tortuous blood vessels and heart cavities. It not only enhances the control freedom of the distal end of the catheter during the operation, ensures that the ultrasonic catheter can smoothly reach the expected position and can perform real-time ultrasonic detection, but also facilitates the doctor's operation and control.

[0071] like Figures 3 to 6As shown, the rotation control component 12 includes a rotation knob 121 and a catheter fixed shaft 122. The rotation knob 121 is sleeved on the catheter fixed shaft 122. The connecting end 22 is inserted into the catheter fixed shaft 122 and connected to the catheter fixed shaft 122, so that the rotation of the rotation knob 121 will drive the catheter fixed shaft 122 and the connecting end 22 to rotate together. The rotation knob 121 and the catheter fixed shaft 122 can be rotatably arranged on the handle housing 11. The inner circumference of the catheter fixed shaft 122 is connected to the connecting end 22. The rotation knob 121 is sleeved and connected to the outer circumference of the catheter fixed shaft 122. By applying a force on the outer circumference of the rotation knob 121, the rotation of the rotation knob 121 will drive the catheter fixed shaft 122 and the catheter body 20 to rotate together. The overall structure is simple and very convenient to use.

[0072] Specifically, the outer circumference of the connection end 22 has a convex rib extending along its axial direction, and the inner wall surface of the catheter fixing shaft 122 has a slot. The convex rib moves along the axial direction and is inserted into the slot, so that the rotation of the catheter fixing shaft 122 drives the connection end 22 to rotate together, and at the same time, it is very convenient to insert and remove along the axial direction. Similarly, the outer circumference of the catheter fixing shaft 122 has a plurality of plug-in plates, and the inner wall surface of the rotating knob 121 has a plurality of plug-in plate slots. The catheter fixing shaft 122 moves along the axial direction so that the plurality of plug-in plates are respectively inserted into the plurality of plug-in plate slots, so that the rotation of the rotating knob 121 drives the catheter fixing shaft 122 to rotate together, and at the same time, it is very convenient to insert and remove along the axial direction. Among them, the outer surface of the rotating knob 121 has anti-slip grooves.

[0073] In this embodiment, the rotation of the rotary knob 121 is manually driven to rotate to realize the rotation of the catheter body 20. Of course, in other embodiments, the rotation of the catheter body 20 can also be driven by a rotary electric method, for example, an electric mechanism can be installed in the tail end of the handle 10, and the rotary electric mechanism can be directly connected to the catheter body 20, and can also be connected to the catheter fixed shaft 122 to realize the rotation of the catheter body 20.

[0074] like Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the rotation control component 12 further includes a rotation locking knob 123, which is rotatably connected to the handle housing 11. After the rotation knob 121 is rotated to a desired position, the rotation locking knob 123 locks the rotation knob 121. When the rotation knob 121 is rotated to a desired position, the rotation locking knob 123 is rotated so that the rotation locking knob 123 exerts a force on the rotation knob 121, thereby locking and locking the rotation knob 121 to prevent the rotation of the rotation knob 121, thereby ensuring that the catheter body 20 will not be offset and misaligned, and the stability is higher.

[0075] The rotation locking knob 123 has at least one first locking bevel 1231 on one side facing the rotation knob 121, and the rotation knob 121 has at least one second locking bevel 1211 on one side facing the rotation locking knob 123. The first locking bevel 1231 is pressed against the second locking bevel 1211 by rotating the rotation locking knob 123. The present invention adopts locking bevels to realize rotation locking. When the rotation knob 121 needs to be rotated and adjusted, the first locking bevel 1231 and the second locking bevel 1211 are spaced apart and do not press against each other, so that the rotation knob 121 can be rotated to a desired position. After the rotation knob 121 is rotated to a desired position, the first locking bevel 1231 and the second locking bevel 1211 are pressed against each other and generate a force, so that the rotation knob 121 is stuck and locked and cannot rotate. When the rotary knob 121 needs to be rotated again, the rotary locking knob 123 is rotated in the opposite direction of the locking, so that the first locking bevel 1231 and the second locking bevel 1211 are separated from each other, so that the rotary knob 121 can be rotated and adjusted again. The overall structure is simple and very convenient to use.

[0076] In this embodiment, the number of the first locking bevel 1231 and the number of the second locking bevel 1211 are both three, and the three first locking bevels 1231 are circumferentially arranged on the side of the rotation locking knob 123, so that the locking stability is higher.

[0077] The outer circumference of the handle housing 11 has an end face stopper 111, and the rotation locking knob 123 is located between the end face stopper 111 and the rotation knob 121, and the side of the rotation locking knob 123 facing away from the rotation knob 121 abuts against the end face stopper 111. The outer circumference of the handle housing 11 near the movable end 21 has an end face stopper 111, and the rotation locking knob 123 is located between the end face stopper 111 and the rotation knob 121, and the rotation knob 121, the rotation locking knob 123 and the end face stopper 111 are abutted in sequence, and the connection end 22 passes through the end face stopper 111 and the rotation locking knob 123 and is connected to the rotation knob 121. When the handle is locked, one side of the rotation locking knob 123 having the first locking bevel 1231 abuts against the rotation knob 121 through the first locking bevel 1231, and the other side abuts against the end face stopper 111, thereby further strengthening the abutting force of the rotation locking knob 123 on the rotation knob 121, and achieving a more stable and reliable locking. In this embodiment, the end face stopper 111 is annular and protrudes outward. The end face stopper 111 is threadedly connected to the outer peripheral surface of the handle housing 11.

[0078] like Figure 1 , Figures 3 to 8As shown, the bending control component 13 includes a front and rear bending knob 131, a left and right bending knob 132, a first pull wire 133, a second pull wire 134, a third pull wire 135 and a fourth pull wire 136. The front and rear bending knob 131 and the left and right bending knob 132 are both rotatably connected to the handle housing 11, one end of the first pull wire 133 and the second pull wire 134 are both connected to the front and rear bending knob 131, the other end of the first pull wire 133 and the other end of the second pull wire 134 are respectively wound in opposite directions and connected to the front and rear ends of the movable end 21, one end of the third pull wire 135 and the fourth pull wire 136 are both connected to the left and right bending knob 132, the other end of the third pull wire 135 and the other end of the fourth pull wire 136 are respectively wound in opposite directions and connected to the left and right ends of the movable end 21.

[0079] The bending control component 13 can be bent forward and backward and left and right. The forward and backward bending knob 131, the first pull wire 133 and the second pull wire 134 can be bent forward and backward. The forward and backward bending knob 131 is connected to the handle housing 11 and can rotate freely. One end of the first pull wire 133 and one end of the second pull wire 134 are respectively connected to the forward and backward bending knob 131. The other end of the first pull wire 133 and the other end of the second pull wire 134 are respectively wound in opposite directions and then pass through the center of the connecting end 22 to be connected to the front and rear ends of the movable end 21. By rotating the forward and backward bending knob 131, one of the first pull wire 133 and the second pull wire 134 is tightened and the other is loosened, thereby realizing forward bending or backward bending.

[0080] The left and right bending knob 132, the third pull wire 135 and the fourth pull wire 136 are used for left and right bending. The left and right bending knob 132 is connected to the handle housing 11 and can rotate freely. One end of the third pull wire 135 and one end of the fourth pull wire 136 are respectively connected to the left and right bending knob 132. The other end of the third pull wire 135 and the other end of the fourth pull wire 136 are respectively wound in opposite directions and then pass through the center of the connecting end 22 to be connected to the left and right ends of the movable end 21. By rotating the left and right bending knob 132, one of the third pull wire 135 and the fourth pull wire 136 is tightened and the other is loosened, thereby realizing left bending or right bending.

[0081] Specifically, in the present embodiment, one end of the first pull wire 133, the second pull wire 134, the third pull wire 135 and the fourth pull wire 136 are connected to the bending knob, and the other end is inserted into the catheter body 20 after extending into the tail end of the handle housing 11, and then passes through the catheter body 20 and is connected to the front and back, left and right ends of the movable end 21. The distal bending end of the catheter body 20 adopts an asymmetric design, a directional bending design of the bending section, and the bending section of the distal end of the catheter body 20 adopts a large bend and a small bend design. The distal ends of the bending wires are respectively fixed at different axial positions of the distal end of the catheter body 20 to achieve re-bending based on the large bend. The directional bending design of the bending section is to achieve a directional bending effect by cutting grooves at different surface positions of the metal pipe by laser. The ultrasonic catheter of this embodiment has the functions of pushing and rotating the catheter body 20 on the basis of bending adjustment, and the bending control component 13 adopts a large bend and then a small bend design and a unique bending directional function, so that the catheter body 20 meets higher requirements and satisfies better pushing efficiency, better ability to reach the target detection position and catheter anti-bending properties.

[0082] The bending control component 13 also includes a winding column frame 137, which is located between the front and rear bending knobs 131 and the left and right bending knobs 132. The first pull wire 133 and the second pull wire 134 respectively bypass the winding column frame 137 and extend into the handle housing 11 and the catheter body 20, and the third pull wire 135 and the fourth pull wire 136 respectively bypass the winding column frame 137 and extend into the handle housing 11 and the catheter body 20. The first pull wire 133 and the second pull wire 134, the third pull wire 135 and the fourth pull wire 136 are respectively wound on the winding column frame 137, so that the pull wires will not be stuck when in use, so that the stability is higher during use; at the same time, it is convenient to install and use the pull wires.

[0083] In this embodiment, the bending control component 13 also includes two bending inner blocks 138, which are respectively located at the two ends of the winding column frame 137, the first pull wire 133 and the second pull wire 134 are connected to one of the bending inner blocks 138, the third pull wire 135 and the fourth pull wire 136 are connected to the other bending inner block 138, the front and rear bending knobs 131 and the left and right bending knobs 132 are respectively mounted and connected to the two bending inner blocks 138, and the outer peripheral surfaces of the front and rear bending knobs 131 and the left and right bending knobs 132 have anti-slip patterns. By rotating the front and rear bending knobs 131 or the left and right bending knobs 132, the bending inner blocks 138 will be driven to rotate together, thereby realizing four-way bending adjustment. The specific structure of the winding column frame 137 includes two rings and multiple connecting columns, and the multiple connecting columns are all located between the two rings and connected to the two rings at both ends, and the pull wire will be wound around the connecting columns. The winding column frame 137 is fixed in the handle housing 11.

[0084] The bending control component 13 also includes a bending locking knob 139, which is rotatably connected to the handle housing 11, and the bending locking knob 139 acts on the front and rear bending knobs 131 and the left and right bending knobs 132 to achieve the locking of the front and rear bending knobs 131 and the left and right bending knobs 132. The bending control component 13 also includes a bending locking knob 139, which is connected to the handle housing 11 and can rotate freely. Similarly, by rotating the bending locking knob 139, the front and rear bending knobs 131 and the left and right bending knobs 132 can be pressed against each other and locked so that they cannot rotate, thereby ensuring that the catheter body 20 will not be offset or misaligned, and having higher stability.

[0085] One side of the bending locking knob 139 has a third locking inclined surface 1391 for abutting against the front and rear bending knobs 131 and / or the left and right bending knobs 132. In this embodiment, there is only one bending locking knob 139, and the front and rear bending knobs 131, the left and right bending knobs 132 and the bending locking knob 139 are sequentially sleeved on the handle housing 11 and can rotate on the handle housing 11. The bending locking knob 139 is also locked by means of a locking bevel. When the front and rear bending knobs 131 and the left and right bending knobs 132 are rotated to the desired positions, the bending locking knob 139 is rotated so that the third locking bevel 1391 will abut against the left and right bending knobs 132. The left and right bending knobs 132 will be squeezed and exert force on the front and rear bending knobs 131, so that the left and right bending knobs 132 and the front and rear bending knobs 131 are stuck and locked and cannot rotate, thereby ensuring that the catheter body 20 will not be offset or misaligned, and the stability is higher. At the same time, it is very convenient to use and the overall structure is simple.

[0086] The side of the left and right bending knobs 132 facing the bending locking knobs 139 may also be provided with a locking inclined surface. The number of the bending locking knobs 139 may also be two, and the two bending locking knobs 139 are used to lock the front and rear bending knobs 131 and the left and right bending knobs 132 respectively.

[0087] like Figure 1 , Figure 6 and Figure 8As shown, the mobile control component 14 includes a mobile push handle 141 and a connecting rod 142. The mobile push handle 141 is exposed from the handle housing 11 and can move along the axial direction of the catheter body 20 on the handle housing 11. The mobile push handle 141 is connected to the connecting rod 142. The connecting rod 142 is located in the handle housing 11 and connected to the connecting end 22. The connecting rod 142 is fixed to the catheter body 20. The mobile push handle 141 is a protrusion exposed from the handle housing 11. When the catheter body 20 needs to be moved axially, the mobile push handle 141 is moved back and forth in the axial direction by applying force on the mobile push handle 141. The movement of the mobile push handle 141 will drive the connecting rod 142 and the connecting end 22 to move together, so that the catheter body 20 can be moved to the desired position, ensuring that the detection position is accurately reached, and the use operation is simpler and more convenient. Among them, the handle housing 11 can be provided with a limiting structure, and the limiting structure is used to interact with the mobile control component 14 to realize the movement of the mobile control component 14 into position, and the stability is high.

[0088] The ultrasonic catheter further includes a tail wire 30, which is connected to an end of the handle 10 away from the active end 21. The circuit will extend into the handle 10 through the tail wire 30.

[0089] In this embodiment, the rotating knob 121, the catheter fixed shaft 122, the front and rear bending knob 131, the left and right bending knob 132, the movable push handle 141, the connecting end 22 in the catheter body 20 and other components can be made of materials with low friction coefficients, such as PTFE, FEP and other fluoroplastics, POM, self-lubricating plastics, etc.; or they are made of lubricating and or wear-resistant coatings, such as PTFE, Parylene, silicon carbide, silicon nitride, etc. The active end 21 in the catheter body 20, that is, the distal bending section of the catheter, can be set with high elastic materials, and the bending section material is 70A-60D high elastic polyurethane material, nickel titanium wire braiding, nickel titanium tube cutting and other designs.

[0090] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An ultrasonic catheter, characterized in that: It includes a handle and a catheter body, the handle includes a handle shell, a rotation control component, a bending control component and a movement control component, the two ends of the catheter body have a movable end and a connecting end, the rotation control component is rotatably connected to the handle shell, the connecting end extends into the handle shell, and the connecting end is connected to the rotation control component, so that the rotation control component drives the catheter body to rotate, the bending control component is rotatably connected to the handle shell, and the bending control component is connected to the movable end, so that the bending control component drives the movable end to bend in four directions, the movement control component is connected to the handle shell and moves on the handle shell along the axial direction of the catheter body, and the movement control component is connected to the connecting end.

2. The ultrasonic catheter according to claim 1, characterized in that The rotation control component includes a rotation knob and a catheter fixing shaft, the rotation knob is sleeved on the catheter fixing shaft, the connecting end is inserted into the catheter fixing shaft and connected to the catheter fixing shaft, so that the rotation of the rotation knob will drive the catheter fixing shaft and the connecting end to rotate together.

3. The ultrasonic catheter according to claim 2, characterized in that: The rotation control component also includes a rotation locking knob, which is rotatably connected to the handle housing. After the rotation knob is rotated to a desired position, the rotation locking knob clamps and locks the rotation knob.

4. The ultrasonic catheter according to claim 3, characterized in that: The rotation locking knob has at least one first locking bevel on one side facing the rotation locking knob, and the rotation locking knob has at least one second locking bevel on one side facing the rotation locking knob. The first locking bevel abuts against the second locking bevel by rotating the rotation locking knob.

5. The ultrasonic catheter according to claim 3, characterized in that: The outer peripheral surface of the handle housing is provided with an end face stopper, the rotation locking knob is located between the end face stopper and the rotation knob, and the side of the rotation locking knob facing away from the rotation knob abuts against the end face stopper.

6. The ultrasonic catheter according to claim 1, characterized in that: The bending control component includes a front and rear bending knob, a left and right bending knob, a first pull wire, a second pull wire, a third pull wire and a fourth pull wire. The front and rear bending knobs and the left and right bending knobs are both rotatably connected to the handle housing. One end of the first pull wire and the second pull wire are both connected to the front and rear bending knobs, and the other end of the first pull wire and the other end of the second pull wire are respectively wound in opposite directions and connected to the front and rear ends of the movable end. One end of the third pull wire and the fourth pull wire are both connected to the left and right bending knobs, and the other end of the third pull wire and the other end of the fourth pull wire are respectively wound in opposite directions and connected to the left and right ends of the movable end.

7. The ultrasonic catheter according to claim 6, characterized in that: The bending control component also includes a winding column frame, which is located between the front and rear bending knobs and the left and right bending knobs. The first pull wire and the second pull wire respectively bypass the winding column frame and extend into the handle housing and the catheter body. The third pull wire and the fourth pull wire respectively bypass the winding column frame and extend into the handle housing and the catheter body.

8. The ultrasonic catheter according to claim 6, characterized in that: The bending control component also includes a bending locking knob, which is rotatably connected to the handle housing. The bending locking knob acts on the front and rear bending knobs and the left and right bending knobs to achieve the locking of the front and rear bending knobs and the left and right bending knobs.

9. The ultrasonic catheter according to claim 8, characterized in that One side of the bending locking knob has a third locking inclined surface for abutting against the front-rear bending knob and / or the left-right bending knob.

10. The ultrasonic catheter according to claim 1, characterized in that: The movable control component includes a movable push handle and a connecting rod. The movable push handle is exposed from the handle housing and can move along the axial direction of the catheter body on the handle housing. The movable push handle is connected to the connecting rod. The connecting rod is located in the handle housing and connected to the connecting end.

Images