Catheter handle and bending control device

Abstract

The utility model provides a catheter handle and bending control equipment, and relates to the technical field of medical instruments. The catheter handle is used for controlling the bending direction of the interventional catheter and comprises a fixing base, a control piece and a transmission piece, the interventional catheter can be fixed to the fixing base and extend in the direction away from the fixing base, and the control piece comprises a first control part and a second control part. The first control part and the second control part are respectively used for connecting a first drawing wire and a second drawing wire in the interventional catheter on the fixed seat, and the transmission part is simultaneously in transmission connection with the first control part and the second control part and drives the first control part and the second control part to move oppositely in the extension direction of the interventional catheter. Through the arrangement, the first pull wire and the second pull wire can be in a state that one is pulled and the other is relaxed, and the end part, corresponding to the pulled pull wire, of the interventional catheter can be bent, so that the interventional catheter can be matched with the structure of a blood vessel of a human body to adjust the direction in the body.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a catheter handle and a bending control device. Background Art

[0002] Among interventional treatment technologies, vascular interventional treatment is the sub-field with the highest technical requirements and entry barriers, and one of the indispensable and most valuable consumables is the vascular intervention catheter. Since the vascular channels in the human body often have individual differences, an interventional catheter with a single angle cannot match the vascular structure of each person. If the angle of the interventional catheter cannot match the vascular structure of the human body, it will inevitably affect its delivery and positioning effect during surgery, thereby greatly increasing the difficulty of operation and the risk of surgical complications. However, existing equipment for controlling the bending of interventional catheters usually has a more complex fixed point and positioning mechanism, resulting in a longer length, larger volume, and heavier weight of the equipment, which is not conducive to doctors operating for a long time, and is also inconvenient to control bending and locking. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect of the relatively complex structure of the device for controlling the bending of the interventional catheter in the prior art, and to provide a catheter handle and a bending control device.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A catheter handle, used for controlling the bending direction of an interventional catheter, is characterized in that the catheter handle comprises:

[0006] A fixing seat, on which the interventional catheter can be fixed and extend in a direction away from the fixing seat;

[0007] A control member, the control member comprising a first control portion and a second control portion, the first control portion and the second control portion being respectively used on the fixing seat to connect a first drawing wire and a second drawing wire in the interventional catheter;

[0008] A transmission member is connected to the first control part and the second control part at the same time, and drives the first control part and the second control part to perform opposite movements in the extension direction of the interventional catheter.

[0009] In the present scheme, through this setting, the interventional catheter is fixed by a fixing seat, and the fixing seat can be moved so that the extended end of the interventional catheter can enter the patient's body; at the same time, the first control unit and the second control are respectively connected to the first wire and the second wire in the interventional catheter, and the transmission member is used to drive the first control unit and the second control unit to move in opposite directions along the extension direction of the interventional catheter, so that the first wire and the second wire can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter corresponding to the pulled wire will be bent, so that the interventional catheter can adjust its direction inside the body to match the structure of the human blood vessels. At the same time, the transmission member is used to simultaneously adjust the states of the first wire and the second wire, so that the interventional catheter can respond to the bending control faster, and the bending shape and angle control of the end of the interventional catheter will be more precise, and the overall structure is also relatively simple, which is conducive to long-term operation by doctors.

[0010] Furthermore, the transmission member includes a rotating screw, which is arranged on the fixed seat along the extension direction of the interventional catheter. The first control part and the second control part are both arranged on the rotating screw. The rotating screw drives the first control part and the second control part to move by its own rotation.

[0011] In the present solution, through this arrangement, the rotation of the rotating screw can be converted into linear movement of the first control part and the second control part, so that the first wire drawing and the second wire drawing inside the interventional catheter only need to move linearly, thereby improving the reliability of the first wire drawing and the second wire drawing under long-term use; in addition, the rotating screw has a certain self-locking function, which can ensure that the interventional catheter maintains a certain bending angle during use.

[0012] Furthermore, the surface of the rotating screw is provided with a first thread and a second thread connected end to end, and the first thread and the second thread have opposite rotation directions, and the first control part and the second control part are respectively meshed and connected to the first thread and the second thread.

[0013] In the present solution, through this arrangement, when the rotating screw rotates in a fixed direction, since the rotation directions of the first thread and the second thread on the surface of the rotating screw are opposite, the first control part and the second control part can move in opposite directions, so as to further make the first wire drawing and the second wire drawing be in a state where one is pulled and the other is relaxed. At the same time, the structure is simpler, smaller in size and lighter in weight.

[0014] Furthermore, the transmission member also includes a first gear and a second gear, the first gear is fixed on the rotating screw, the second gear is meshedly connected to the first gear, and drives the first gear to rotate by its own rotation.

[0015] In the present embodiment, through this setting, the number of teeth of the first gear and the second gear can be adjusted as needed, thereby adjusting the rotation speed of the first gear to prevent the first gear from being rotated too fast directly, causing the first wire and the second wire to be pulled or relaxed too much, thereby causing the end of the interventional catheter to bend too much.

[0016] Furthermore, the number of the rotating screws is two, and the first control unit and the second control unit are each arranged on one of the rotating screws;

[0017] The transmission member includes two first gears and a second gear. The two first gears are respectively fixed on the two rotating screws. The second gear drives the two first gears to rotate simultaneously by rotating itself.

[0018] In the present solution, through this arrangement, the first control part and the second control part are both separately arranged on the rotating screw, which can shorten the length of the rotating screw under the same stroke, and further shorten the length of the entire catheter handle; at the same time, each rotating screw is provided with a first gear, and the rotating screw only needs to be provided with a thread rotating in a fixed direction, which makes the processing and manufacturing of the rotating screw more convenient.

[0019] Furthermore, the second gear is meshed and connected to the two first gears at the same time, and the threads on the surfaces of the two rotating screws have opposite rotation directions;

[0020] Alternatively, the second gear is meshedly connected to one of the first gears, and the two first gears are meshedly connected to each other, and the rotation directions of the threads on the surfaces of the two rotating screws are the same.

[0021] In this solution, when the second gear rotates along a fixed direction, the second gear is meshed and connected to the two first gears at the same time, so that the rotation directions of the two first gears are the same. At this time, the rotation directions of the threads on the two rotating screw surfaces are opposite, so that the first control part and the second control part can move in opposite directions; or, when the second gear rotates along a fixed direction, the second gear is meshed and connected to one of the first gears, and the two first gears are meshed and connected to each other, so that the rotation directions of the two first gears are opposite. At this time, the rotation directions of the threads on the two rotating screw surfaces are the same, so that the first control part and the second control part can also move in opposite directions.

[0022] Furthermore, the transmission member also includes a rotating knob, and the rotating knob and the second gear are respectively arranged outside and inside the fixing base, and the rotating shaft of the rotating knob passes through the fixing base and is transmission-connected to the second gear.

[0023] In the present solution, through this arrangement, the rotating knob can be directly operated outside the fixing seat, thereby driving the second gear to rotate, and the rotation of the second gear can in turn drive the first gear to rotate, so as to make it more convenient for the doctor to operate the catheter handle and control the bending of the end of the catheter handle.

[0024] Furthermore, the catheter handle further comprises a catheter fixing piece, the catheter fixing piece is arranged on the fixing seat along the extension direction of the interventional catheter, and a through hole is opened on the catheter fixing piece along its radial direction;

[0025] The interventional catheter is fixed on the fixing seat by the catheter fixing member, and the first drawwire and the second drawwire in the interventional catheter are passed through the through hole and connected to the first control part and the second control part.

[0026] In the present scheme, through this arrangement, the interventional catheter can be fixed on the fixing seat using the catheter fixing piece, and a through hole is opened on the catheter fixing piece for the first drawing wire and the second drawing wire to pass through, further limiting the pulling path of the first drawing wire and the second drawing wire, and also being more conducive to the resetting of the first drawing wire and the second drawing wire.

[0027] Further, the first control part is used to connect the first wire drawing part, and the second control part is used to connect the second wire drawing part, which are respectively located on both sides of the through hole;

[0028] And / or, the through hole is in the shape of a waist-shaped hole, and the length direction of the waist-shaped hole is consistent with the extension direction of the interventional catheter.

[0029] In the present solution, through this arrangement, the first drawing wire and the second drawing wire are pulled or relaxed respectively on both sides of the catheter fixing part to avoid interference between the two. At the same time, the first control part and the second control part are moved on both sides of the catheter fixing part along the extension direction of the interventional catheter, and the overall structure is more symmetrical and reasonable.

[0030] A bending control device, characterized in that the bending control device comprises:

[0031] a catheter handle as described above;

[0032] An interventional catheter, wherein a first drawing wire and a second drawing wire are arranged inside the interventional catheter, and the first drawing wire and the second drawing wire are respectively used to control a first bending control point and a second bending control point located opposite to each other at the ends of the interventional catheter.

[0033] In the present scheme, through this setting, the catheter handle is used to control the first draw wire and the second draw wire inside the interventional catheter, so that one of the draw wires is pulled and the other draw wire is relaxed, and the bending control point corresponding to the pulled draw wire is subjected to force and will bend; in addition, the first bending control point and the second bending control point controlled by the first draw wire and the second draw wire are relatively arranged, and the two can cooperate with each other to further make the interventional catheter respond to the bending control faster, and the bending shape and angle control of the end of the interventional catheter will be more precise.

[0034] Furthermore, the first drawing wire and the second drawing wire are arranged in parallel inside the interventional catheter, and along the radial direction of the interventional catheter, the first drawing wire and the second drawing wire are arranged opposite to each other.

[0035] In this solution, through this arrangement, the first drawing wire and the second drawing wire can directly correspond to the first control bending point and the second control bending point inside the interventional catheter, avoiding interference and crossing between the two drawing wires, thereby affecting the control of the corresponding control bending points.

[0036] The positive and progressive effects of the utility model are:

[0037] The interventional catheter is fixed by a fixing seat, and the fixing seat can be moved so that the extended end of the interventional catheter can enter the patient's body; at the same time, the first control unit and the second control unit are respectively connected to the first wire and the second wire in the interventional catheter, and the transmission member is used to drive the first control unit and the second control unit to perform opposite movements along the extension direction of the interventional catheter, so that the first wire and the second wire can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter corresponding to the pulled wire will be bent, so that the interventional catheter can adjust its direction inside the body to match the structure of human blood vessels. At the same time, the transmission member is used to simultaneously adjust the states of the first wire and the second wire, so that the interventional catheter can respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter can be more precise, and the overall structure is also relatively simple, which is conducive to doctors operating for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall appearance of the bending control device in Example 1 of the utility model.

[0039] Figure 2 This is a schematic diagram of the overall structure of the bending control device in Example 1 of the utility model, wherein the outer shell of the catheter handle is hidden.

[0040] Figure 3 This is a schematic diagram of the assembly structure of the transmission component and the control component in Example 1 of the utility model, wherein the rotating knob is hidden.

[0041] Figure 4It is a cross-sectional schematic diagram of the interventional catheter in Example 1 of the utility model.

[0042] Figure 5 This is a schematic diagram of the overall structure of the bending control device in Example 2 of the utility model, wherein the outer shell of the catheter handle is hidden.

[0043] Figure 6 This is a schematic diagram of the assembly structure of the first control unit, the second control unit and the rotating screw in Example 2 of the utility model.

[0044] Description of reference numerals:

[0045] Bending equipment1

[0046] Catheter handle 10

[0047] Interventional Catheter 20

[0048] First wire drawing 210

[0049] Second wire drawing 220

[0050] Base 111

[0051] Side wall 112

[0052] The first control unit 121

[0053] The second control unit 122

[0054] Rotating screw 131

[0055] First gear 132

[0056] Second gear 133

[0057] Turn the knob 134

[0058] Catheter fixing 140

[0059] Through hole 141

[0060] Catheter Stabilizer 150

[0061] Extension direction of interventional catheter L DETAILED DESCRIPTION

[0062] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] Example 1

[0066] This embodiment provides a bending control device 1, such as Figure 1 and Figure 4 As shown, the bending control device 1 mainly includes a catheter handle 10 and an interventional catheter 20. The first end of the interventional catheter 20 is fixed on the catheter handle 10, and the second end of the interventional catheter 20 extends in a direction away from the catheter handle 10. The interior of the interventional catheter 20 is provided with a first drawing wire 210 and a second drawing wire 220. The catheter handle 10 stretches the first drawing wire 210 and the second drawing wire 220 of the interventional catheter 20 to achieve bending control on the second end of the interventional catheter 20.

[0067] Specifically, Figure 2 , Figure 3 and Figure 4As shown, the catheter handle 10 mainly includes a shell, a fixing seat, a control member and a transmission member. The shell and the fixing seat are connected to each other to achieve the sealing of the entire catheter handle 10. The fixing seat includes a base 111 and two side walls 112. The two side walls 112 are arranged at both ends of the base 111 along the extension direction L of the interventional catheter, and the two side walls 112 are arranged oppositely. The first end of the interventional catheter 20 can be fixed on one of the side walls 112, and the second end of the interventional catheter 20 extends in a direction away from the fixing seat. The control member of the catheter handle 10 includes a first control part 121 and a second control part 122. The first control part 121 and the second control part 122 are both arranged on the base 111 of the fixing seat. The first control part 121 and the second control part 122 are used to connect the first wire 210 and the second wire 220 in the interventional catheter 20 respectively.

[0068] It should be noted that the first wire drawing 210 and the second wire drawing 220 in the interventional catheter 20 both have a fixed end and a control end. The fixed ends of the first wire drawing 210 and the second wire drawing 220 are both fixed at the second end position of the interventional catheter 20. The control ends of the first wire drawing 210 and the second wire drawing 220 are both extended from the first end of the interventional catheter 20. The first control part 121 and the second control part 122 are respectively connected to the control ends of the first wire drawing 210 and the second wire drawing 220. At the same time, the transmission member of the catheter handle 10 includes a rotating screw 131, a first gear 132, a second gear 133 and a rotating knob 134. The transmission member is simultaneously connected to the first control part 121 and the second control part 122 in transmission, and drives the first control part 121 and the second control part 122 to perform opposite movements on the base 111 of the fixed seat in the extension direction L of the interventional catheter, thereby adjusting the bending direction of the second end of the interventional catheter 20. For example, when the first control unit 121 drives the control end of the first pull wire 210 to move, the fixed end of the first pull wire 210 will be pulled or loosened. By adjusting the position of the first pull wire 210 in the interventional catheter 20 and the movement of the first control unit 121, the bending direction and bending amplitude of the second end of the interventional catheter 20 can be adjusted as needed.

[0069] Through the above-mentioned settings, the interventional catheter 20 is fixed by using a fixing seat, and the fixing seat can be moved so that the second end of the interventional catheter 20 can enter the patient's body; at the same time, the first control part 121 and the second control part 122 are respectively connected to the first drawwire 210 and the second drawwire 220 in the interventional catheter 20, and the first control part 121 and the second control part 122 are driven by a transmission member to perform opposite movements along the extension direction L of the interventional catheter, so that the first drawwire 210 and the second drawwire 220 can be in a state where one is pulled and the other is relaxed, and the end of the interventional catheter 20 corresponding to the pulled drawwire will be bent, so that the interventional catheter 20 can adjust its direction inside the body to match the structure of the human blood vessels. At the same time, the transmission member is used to simultaneously adjust the states of the first drawwire 210 and the second drawwire 220, so that the interventional catheter 20 can respond to the bending control faster, and the bending shape and angle control of the end of the interventional catheter 20 will be more precise, and the overall structure is also relatively simple, which is conducive to long-term operation by doctors.

[0070] like Figure 2 , Figure 3 and Figure 4 As shown, the transmission member of the catheter handle 10 specifically includes a rotating screw 131, which has a rotating thread. The rotating screw 131 is arranged on a fixed seat along the extension direction L of the interventional catheter and can rotate around its own central axis. The first control part 121 and the second control part 122 are both arranged on the rotating screw 131. When the rotating screw 131 rotates itself, it can drive the first control part 121 and the second control part 122 to move. Through this arrangement, the rotational movement of the rotating screw 131 can be converted into the linear movement of the first control part 121 and the second control part 122, so that the first wire drawing 210 and the second wire drawing 220 inside the interventional catheter 20 only need to move linearly, thereby improving the reliability of the first wire drawing 210 and the second wire drawing 220 under long-term use; in addition, the rotating screw 131 has a certain self-locking function, which can ensure that the interventional catheter 20 maintains a certain bending angle during use. It should be noted that in other embodiments, other transmission parts existing in the prior art can also be used to control the movement of the first control part 121 and the second control part 122. For example, a movable cylinder is provided on the fixed base to drive the movement of the first control part 121 and the second control part 122 on the fixed base.

[0071] like Figure 2 and Figure 3As shown, there are two rotating screws 131, which are arranged in parallel on the fixed seat, one end of each rotating screw 131 is arranged on the side wall 112 of the fixed seat, and the other end of each rotating screw 131 is arranged on the base 111 of the fixed seat, and each rotating screw 131 is arranged perpendicular to the side wall 112 of the fixed seat, and the first control part 121 and the second control part 122 are respectively arranged on one of the rotating screws 131. In addition, the first gear 132 is sleeved and fixed at one end of the two rotating screws 131 arranged on the side wall 112, that is, there are two first gears 132, and the two first gears 132 are also meshed with the second gear 133 at the same time, and the rotation of the second gear 133 drives the two first gears 132 to rotate simultaneously. Through this arrangement, the first control part 121 and the second control part 122 are both separately arranged on the rotating screw 131. Under the condition of the same stroke, the length of the rotating screw 131 can be shortened, and the length of the entire catheter handle 10 can be further shortened; at the same time, each rotating screw 131 is provided with a first gear 132, and the rotating screw 131 only needs to be provided with a thread rotating in a fixed direction, which makes the processing and manufacturing of the rotating screw 131 more convenient.

[0072] Furthermore, when the second gear 133 is meshed and connected to the two first gears 132 at the same time, the rotation directions of the threads on the surfaces of the two rotating screws 131 are opposite. With this arrangement, when the second gear 133 rotates in a fixed direction, the second gear 133 is meshed and connected to the two first gears 132 at the same time, so that the rotation directions of the two first gears 132 are the same, and at this time, the rotation directions of the threads on the surfaces of the two rotating screws 131 are opposite, so that the first control unit 121 and the second control unit 122 can move in opposite directions, thereby satisfying that the first wire drawing 210 and the second wire drawing 220 in the interventional catheter 20 can be in a state where one is pulled and the other is relaxed.

[0073] However, in other embodiments, when the second gear 133 is only meshed with one of the first gears 132, and the two first gears 132 are meshed with each other, the rotation direction of the threads on the surfaces of the two rotating screws 131 is the same. In this configuration, when the second gear 133 rotates in a fixed direction, the second gear 133 is meshed with one of the first gears 132, and the two first gears 132 are meshed with each other, so that the rotation directions of the two first gears 132 are opposite. At this time, the rotation direction of the threads on the surfaces of the two rotating screws 131 is the same, and the first control unit 121 and the second control unit 122 can also move in opposite directions, thereby satisfying that the first wire drawing 210 and the second wire drawing 220 in the interventional catheter 20 can be in a state where one is pulled and the other is relaxed.

[0074] like Figure 2As shown, the transmission member of the catheter handle 10 also includes a rotating knob 134, which is arranged corresponding to the second gear 133, and when the fixed seat and the shell cooperate with each other so that the entire catheter handle 10 is in a closed state, the first gear 132 and the second gear 133 are both located inside the catheter handle 10, and the rotating knob 134 is located outside the catheter handle 10, and the second gear 133 and the rotating knob 134 are separated by the side wall 112 of the fixed seat. Among them, the rotating shaft of the rotating knob 134 can pass through the side wall 112 of the fixed seat and be connected to the second gear 133. Through this arrangement, the rotating knob 134 can be directly operated outside the fixed seat, thereby driving the second gear 133 to rotate, and the rotation of the second gear 133 can then drive the first gear 132 to rotate, so that it is more convenient for doctors to operate the catheter handle 10 and control the bending of the end of the catheter handle 10.

[0075] like Figure 2 As shown, the catheter handle 10 also includes a catheter fixing member 140 and a catheter stabilizing member 150. Similarly, when the fixing seat and the housing cooperate with each other so that the entire catheter handle 10 is in a closed state, the catheter fixing member 140 is located inside the catheter handle 10, and the catheter stabilizing member 150 is located outside the catheter handle 10. The catheter fixing member 140 and the catheter stabilizing member 150 are both arranged on the fixing seat along the extension direction L of the interventional catheter. The catheter stabilizing member 150 is in a conical shape and is fixed to one of the side walls 112 of the fixing seat. The two ends of the catheter fixing member 140 are fixed to the two side walls 112 of the fixing seat, and the catheter fixing member 140 is provided with a through hole 141 in its radial direction. The interventional catheter 20 can be sequentially inserted into the catheter stabilizer 150 and the catheter fixing member 140, and fixed to the fixing seat through the catheter stabilizer 150 and the catheter fixing member 140. The first drawwire 210 and the second drawwire 220 in the interventional catheter 20 can be inserted through the through hole 141 of the catheter stabilizer 150, and connected to the first control unit 121 and the second control unit 122. Through this arrangement, the interventional catheter 20 can be fixed to the fixing seat by using the catheter fixing member 140 and the catheter stabilizer 150, so as to ensure the stability of the interventional catheter 20, and the through hole 141 for the first drawwire 210 and the second drawwire 220 to be inserted is provided on the catheter fixing member 140, so as to further limit the pulling path of the first drawwire 210 and the second drawwire 220, and also facilitate the resetting of the first drawwire 210 and the second drawwire 220.

[0076] like Figure 2 and Figure 3As shown, the shape of the first control part 121 and the second control part 122 is an L-shaped shape with uniform thickness, and the rotating screw 131 is arranged in the first control part 121 and the second control part 122 along the extension direction L of the interventional catheter. One end of the first control part 121 and the second control part 122 extends upward in the vertical direction, and the extended end is used to connect the first wire drawing 210 and the second wire drawing 220 of the interventional catheter 20. Among them, the part of the first control part 121 used to connect the first wire drawing 210, and the part of the second control part 122 used to connect the second wire drawing 220 are respectively located on both sides of the through hole 141 on the catheter fixing member 140. And a preferred setting is that the through hole 141 on the catheter fixing member 140 is in the shape of a waist-shaped hole, and the length direction of the waist-shaped hole is consistent with the extension direction L of the interventional catheter. Through this arrangement, the first wire drawing 210 and the second wire drawing 220 are pulled or relaxed respectively on both sides of the catheter fixing part to avoid interference between the two. At the same time, the first control part 121 and the second control part 122 are moved on both sides of the catheter fixing part along the extension direction L of the interventional catheter, and the overall structure is more symmetrical and reasonable.

[0077] As described above, the interventional catheter 20 is provided with a first wire drawing 210 and a second wire drawing 220 inside, and the first wire drawing 210 and the second wire drawing 220 both have a fixed end and a control end, and the fixed ends of the first wire drawing 210 and the second wire drawing 220 are both fixed at the second end position of the interventional catheter 20, and the control ends of the first wire drawing 210 and the second wire drawing 220 are both extended from the first end of the interventional catheter 20, and after passing through the through hole 141 of the catheter fixing member 140, they are respectively connected to the first control unit 121 and the second control unit 122. Among them, at the second end position of the interventional catheter 20, there are a first control bending point and a second control bending point that are relatively arranged, and the fixed ends of the first wire drawing 210 and the second wire drawing 220 are respectively connected to the first control bending point and the second control bending point. Through this arrangement, the catheter handle 10 is used to control the first draw wire 210 and the second draw wire 220 inside the interventional catheter 20, so that one of the draw wires is pulled and the other draw wire is relaxed, and the bending control points corresponding to the pulled draw wires are subjected to force and will bend; in addition, the first bending control points and the second bending control points controlled by the first draw wires 210 and the second bending control points 220 are relatively arranged, and the two can cooperate with each other to further make the interventional catheter 20 respond faster to the bending control, and the bending shape and angle control of the end of the interventional catheter 20 will be more precise.

[0078] Further, such as Figure 4As shown, the first drawing wire 210 and the second drawing wire 220 are arranged in parallel inside the interventional catheter 20, and the first drawing wire 210 and the second drawing wire 220 are also arranged relatively along the radial direction of the interventional catheter 20. Through this arrangement, the first drawing wire 210 and the second drawing wire 220 can directly correspond to the first bending control point and the second bending control point inside the interventional catheter 20, avoiding interference and crossing between the two drawing wires, thereby affecting the control of the corresponding bending control points.

[0079] Example 2

[0080] This embodiment also discloses a bending control device, which also includes a catheter handle and an interventional catheter 20. However, in the bending control device of this embodiment, the transmission component of the catheter handle is different from the transmission component in Example 1. Only the differences from Example 1 are specifically described below.

[0081] like Figure 5 and Figure 6 As shown, in this embodiment, there is only one rotating screw 131 in the transmission member, and a first thread and a second thread connected end to end are arranged on the surface of the rotating screw 131, and the rotation directions of the first thread and the second thread are opposite, and the first control part 121 and the second control part 122 of the control member are respectively meshed and connected to the first thread and the second thread. Through this arrangement, when the rotating screw 131 rotates in a fixed direction, since the rotation directions of the first thread and the second thread on the surface of the rotating screw 131 are opposite, the first control part 121 and the second control part 122 can move in opposite directions, so as to further make the first wire drawing and the second wire drawing be in a state where one is pulled and the other is relaxed. At the same time, compared with setting two rotating screws 131 or other settings, this arrangement is simpler in structure, smaller in size and lighter in weight.

[0082] Furthermore, since there is only one rotating screw 131, there is only one first gear 132 correspondingly sleeved on the rotating screw 131, and the second gear 133 is meshed and connected to the first gear 132, and the first gear 132 is driven to rotate by the rotation of the second gear 133. Through this arrangement, the number of teeth of the first gear 132 and the second gear 133 can be adjusted as needed, and then the rotation speed of the first gear 132 can be adjusted to prevent the first gear 132 from being rotated too fast directly, resulting in the first wire and the second wire being pulled or relaxed too much, and then causing the end of the interventional catheter 20 to be bent too much.

[0083] 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. A catheter handle for controlling the bending direction of an interventional catheter, characterized in that: The catheter handle comprises: A fixing seat, on which the interventional catheter can be fixed and extend in a direction away from the fixing seat; A control member, the control member comprising a first control portion and a second control portion, the first control portion and the second control portion being respectively used on the fixing seat to connect a first drawing wire and a second drawing wire in the interventional catheter; A transmission member is connected to the first control part and the second control part at the same time, and drives the first control part and the second control part to perform opposite movements in the extension direction of the interventional catheter.

2. The catheter handle according to claim 1, characterized in that: The transmission member includes a rotating screw, which is arranged on the fixing seat along the extension direction of the interventional catheter. The first control part and the second control part are both arranged on the rotating screw. The rotating screw drives the first control part and the second control part to move by rotating itself.

3. The catheter handle according to claim 2, characterized in that: The surface of the rotating screw is provided with a first thread and a second thread connected end to end, and the first thread and the second thread have opposite rotation directions, and the first control part and the second control part are respectively meshed and connected to the first thread and the second thread.

4. The catheter handle according to claim 3, characterized in that: The transmission member further includes a first gear and a second gear. The first gear is fixed on the rotating screw. The second gear is meshedly connected to the first gear and drives the first gear to rotate by rotating itself.

5. The catheter handle according to claim 2, characterized in that: The number of the rotating screws is two, and the first control part and the second control part are each arranged on one of the rotating screws; The transmission member includes two first gears and a second gear. The two first gears are respectively fixed on the two rotating screws. The second gear drives the two first gears to rotate simultaneously by rotating itself.

6. The catheter handle according to claim 5, characterized in that: The second gear is meshed and connected to the two first gears at the same time, and the threads on the two rotating screw surfaces have opposite rotation directions; Alternatively, the second gear is meshedly connected to one of the first gears, and the two first gears are meshedly connected to each other, and the rotation directions of the threads on the surfaces of the two rotating screws are the same.

7. The catheter handle according to claim 4 or 6, characterized in that: The transmission member further comprises a rotating knob, wherein the rotating knob and the second gear are respectively arranged outside and inside the fixing seat, and a rotating shaft of the rotating knob passes through the fixing seat and is transmission-connected to the second gear.

8. The catheter handle according to any one of claims 1 to 6, characterized in that: The catheter handle further comprises a catheter fixing piece, which is arranged on the fixing seat along the extending direction of the interventional catheter, and a through hole is formed on the catheter fixing piece along its radial direction; The interventional catheter is fixed on the fixing seat by the catheter fixing member, and the first drawwire and the second drawwire in the interventional catheter are passed through the through hole and connected to the first control part and the second control part.

9. The catheter handle according to claim 8, characterized in that: The first control unit is used to connect the first wire drawing portion, and the second control unit is used to connect the second wire drawing portion, which are respectively located on both sides of the through hole; and / or the through hole is shaped as a waist-shaped hole, and the length direction of the waist-shaped hole is consistent with the extension direction of the interventional catheter.

10. A bending control device, characterized in that: The bending control device comprises: The catheter handle according to any one of claims 1 to 9; An interventional catheter, wherein a first drawing wire and a second drawing wire are arranged inside the interventional catheter, and the first drawing wire and the second drawing wire are respectively used to control a first bending control point and a second bending control point located opposite to each other at the ends of the interventional catheter.

11. The bending control device according to claim 10, characterized in that: The first drawwire and the second drawwire are arranged in parallel inside the interventional catheter, and along the radial direction of the interventional catheter, the first drawwire and the second drawwire are arranged opposite to each other.

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