Thrombectomy handle

Abstract

The utility model provides a thrombus extraction handle which comprises an outer shell, a driving component, a transmission component, a thrombus extraction component and a suction control component, the driving component, the transmission component, the thrombus extraction component and the suction control component are contained in the outer shell, the suction control component is integrated in the handle, the driving component comprises a driving output shaft, and the transmission component at least comprises a first gear set and a second gear set which are arranged in the longitudinal direction of the outer shell. The first gear set is connected with the driving output shaft, and the first gear set is engaged with the second gear set all the time; the driving part drives the thrombus taking part to take thrombus through the second gear set, and the first gear set is controlled to establish detachable connection relative to the suction control part, so that the thrombus taking handle can be switched between thrombus breaking and thrombus breaking and thrombus taking synchronization, and switching of working modes is achieved; furthermore, a motor of the driving assembly realizes the conversion of electrodes through a switching knob so as to control the reverse rotation, so that the winding of the thrombus in the catheter is released, and the blockage is removed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a thrombus removal handle. Background Art

[0002] Interventional therapy is an emerging discipline that has developed rapidly in recent years and integrates imaging diagnosis and clinical treatment. It has now become one of the three major clinical pillars alongside traditional internal medicine and surgery. Among them, the peripheral thrombectomy system is mainly used for the aspiration treatment of thrombi. Interventional therapy has the advantages of minimally invasive, simple operation, definite efficacy, and repeatable operation. It is the development direction of the diagnosis and treatment of vascular diseases. As an instrument used in interventional surgery, the peripheral thrombectomy system can quickly reduce the local thrombus load and reduce the need for balloon dilation. Its basic principle is to use spring rotation and suction to rotate and aspirate the thrombus in the blood vessel and transmit it out of the body.

[0003] In actual clinical application, doctors can choose a thrombectomy system according to the patient's peripheral vascular disease conditions. The peripheral thrombectomy system has the advantages of being easy to use, being able to be performed during interventional treatment, and having significant effects on thrombus. However, when delivering the device to the target location, in order to prevent the handle from accidentally touching the thrombus and entangled in the catheter, it is easy for the device to not be turned on in the expected period or affect the doctor's surgical progress. Summary of the invention

[0004] Based on this, it is necessary to provide a thrombus removal handle that can at least solve the problem of thrombus entanglement and blockage in the catheter, and further hope to integrate the function of negative pressure suction to achieve high integration.

[0005] A thrombus removal handle comprises an outer shell and a driving component, a transmission component, a thrombus removal component and a suction control component housed in the outer shell, wherein the suction control component is connected to the thrombus removal component, and the transmission component, driven by the driving component, has a first position for establishing connection with the suction control component and a second position for disconnecting from the suction control component, wherein when the transmission component is in the first position, the suction control component operates under the control of the driving component; and when the transmission component is in the second position, the suction control component stops operating.

[0006] In one embodiment, the thrombus removal component includes a thrombus removal catheter extending toward the distal end along the length direction of the outer shell and exposed from the distal end of the outer shell, and the transmission component includes at least a first gear group and a second gear group arranged along the longitudinal direction of the outer shell, the first gear group is connected to the driving component, and the first gear group is always engaged with the second gear group; the thrombus removal catheter is connected to the suction control component, and a thrombus-breaking guide wire is passed through the thrombus removal catheter, and the proximal end of the thrombus-breaking guide wire is connected to the second gear group; the first gear group can be moved between the first position and the second position along the length direction of the outer shell driven by the driving component.

[0007] In one embodiment, the thrombectomy catheter and the second gear set are located at the same longitudinal position, the suction control component and the first gear set are located at the same longitudinal position, and the output end of the thrombectomy catheter is connected to the suction end of the suction control component through a suction tube.

[0008] In one embodiment, a connecting component is provided at one end of the suction control component close to the first gear group, and an insertion groove is opened in the connecting component. An insert is provided at one end of the first gear group away from the driving component, and the longitudinal cross-sectional shape of the insert is adapted to the longitudinal cross-sectional shape of the insertion groove, and the longitudinal cross-sectional shape of the insert has a non-circular shape.

[0009] In one embodiment, the slot edge of the insertion slot and the distal edge of the insert are both provided with an arc-shaped transition.

[0010] In one embodiment, the suction control component also includes a rotating extrusion assembly, an extrusion plate and a U-shaped tube, and the connecting assembly is connected to the rotating extrusion assembly at one end away from the first gear set; the extrusion plate at least partially covers the rotating extrusion assembly along the rotation circumference of the rotating extrusion assembly, and there is a circumferential gap between the extrusion plate and the circumference of the rotating extrusion assembly, and the U-shaped tube is at least partially arranged in the circumferential gap.

[0011] In one embodiment, the rotating extrusion assembly has a variable circumferential gap with the extrusion plate when rotating, the maximum value of the circumferential gap is greater than the outer diameter of the U-shaped tube, and the minimum value of the circumferential gap is less than the inner diameter of the U-shaped tube.

[0012] In one embodiment, the driving component includes a motor and a pushing assembly, wherein the pushing assembly is at least partially located outside the outer shell, the distal end of the motor is provided with the driving output shaft, and the proximal end is connected to the portion of the pushing assembly located in the inner cavity of the outer shell; the pushing assembly can move relative to the outer shell in the length direction, pushing the motor to move the first gear set between the first position and the second position.

[0013] In one embodiment, one end of the motor connected to the pushing component is provided with at least one pair of contact pieces symmetrically arranged along the circumferential direction, and the pushing component includes two electrode pieces with opposite polarities that can rotate relative to the motor and a switching knob placed on the outside of the outer shell for controlling the rotation of the contact pieces. A power supply is also provided in the outer shell, and the electrode pieces are respectively connected to the two poles of the power supply. The two electrode pieces can rotate to the contact piece position and are electrically connected to the two contact pieces at the same time.

[0014] In one embodiment, the outer shell further includes a reset trigger, which includes a push plate and a pressing plate vertically connected to each other, a rotating shaft is provided on the side wall of the connection position of the push plate and the pressing plate, a through hole is provided on a side of the outer shell close to the motor where a driving output shaft is provided, the rotating shaft is connected to the hole wall of the through hole, and after the connection, the push plate is located in the inner cavity of the outer shell, and the pressing plate is located on the outside of the outer shell; the pressing plate has a working position away from the surface of the outer shell and a reset position close to the surface of the outer shell, and when the pressing plate rotates from the working position to the reset position, the push plate pushes the motor to move the first gear set from the first position to the second position.

[0015] In one embodiment, the surfaces of the push plate and the pressing plate are respectively provided with a first fixing hole and a second fixing hole, and the inner surface of the outer shell close to the push plate and the outer surface close to the pressing plate are respectively provided with a first fixing column and a second fixing column, when the pressing plate is rotated to the working position, the first fixing hole is connected to the first fixing column; when the pressing plate is rotated to the reset position, the second fixing hole is connected to the second fixing column.

[0016] The utility model is beneficial in that the present application provides a thrombus removal handle, comprising an outer shell and a driving component, a transmission component, a thrombus removal component and a suction control component respectively accommodated in the outer shell, the suction control component being integrated in the handle, the driving component comprising a driving output shaft, the transmission component comprising at least a first gear set and a second gear set arranged along the longitudinal direction of the outer shell, the first gear set being connected to the driving output shaft, and the first gear set being always meshed with the second gear set; the driving component drives the thrombus removal component to remove the thrombus through the second gear set, and establishes a releasable connection with the suction control component by controlling the first gear set, so that the thrombus removal handle can be switched between only thrombus crushing and thrombus crushing and thrombus removal simultaneously, thereby realizing switching of the working mode; further, the motor of the driving component realizes the conversion of the electrode through the switching knob, thereby controlling the reversibility, so that the entanglement of the thrombus in the catheter is untied and the blockage is cleared. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is an internal cross-sectional view of the thrombus removal handle of the utility model;

[0018] Figure 2 It is a schematic diagram of the transmission component structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the thrombus removal component of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the suction control component and the transmission component of the utility model;

[0021] Figure 5 The insertion slot of the connection assembly of the utility model is a schematic diagram of a polygonal structure;

[0022] Figure 6 This is a schematic diagram of the structure of a spline groove in which the insertion groove of the connection assembly of the utility model is a spline groove;

[0023] Figure 7 It is a schematic diagram of the circumferential gap structure between the rotating extrusion assembly and the extrusion plate of the utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the driving component of the utility model;

[0025] Fig. 9 This is a schematic diagram of the motor structure of the utility model;

[0026] Fig.10 This is a schematic diagram of the structure of the driving component of the utility model;

[0027] Fig.11 This is a schematic diagram of the structure of a handle with a reset trigger of the utility model;

[0028] Fig.12 For the utility model Fig.10 A partial enlarged view of position A in the middle;

[0029] Fig.13 This is a schematic diagram of the reset trigger structure of the utility model;

[0030] Fig.14 This is a schematic diagram of the internal structure of the outer shell of the utility model;

[0031] Fig.15 For the utility model Fig.13 A partial enlarged view of position B in the middle. DETAILED DESCRIPTION

[0032] To better understand the concept of the present application, the implementation methods of the present application are specifically described below in conjunction with the accompanying drawings. The following specific embodiments are only partial embodiments of the present application and are not limitations of the present application.

[0033] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0034] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0035] In order to more clearly describe the structure of the present application, the terms "proximal end" and "distal end" are defined as commonly used terms in the field of interventional medicine. Specifically, "distal end" refers to the end away from the operator, and "proximal end" refers to the end close to the operator; "axial" refers to its length direction, and "radial" refers to the direction perpendicular to the "axial" direction.

[0036] See also Figure 1 and Figure 2In one embodiment, the present application provides a thrombus removal handle 100 including an outer shell 1, a driving component 2, a transmission component 3, a thrombus removal component 5 and a suction control component 4. The driving component 2 is used to provide a driving force to be transmitted to the thrombus removal component 5 and the suction control component 4 through the transmission component 3. The proximal end of the thrombus removal component 5 is arranged in the outer shell 1, and the distal end is exposed from the outer shell 1, and is used to extend to the embolism position in the human blood vessel to remove and break the thrombus. Among them, each of the driving component 2, the transmission component 3, and the suction control component 4 is at least partially arranged in the outer shell 1, and the suction control component 4 is connected to the thrombus removal component 5. The transmission component 3 has a first position in which it can establish a connection with the suction control component 4 and a second position in which it can disconnect from the suction control component 4 under the drive of the driving component 2. When the transmission component 3 is in the first position, the suction control component works under the control of the driving component 2; when the transmission component 3 is in the second position, the suction control component 4 stops working.

[0037] Please continue reading Figure 2 , wherein the transmission component 3 at least includes a first gear set 31 and a second gear set 32 ​​arranged along the longitudinal direction of the outer shell 1, the first gear set 31 is connected to the driving component 2, and the first gear set 31 is always directly or indirectly meshed with the second gear set 32; the first gear set 31 directly drives the driving component 2 to rotate; the first gear set 31 and the second gear set 32 ​​are arranged from top to bottom along the longitudinal direction of the outer shell 1, and the second gear set 32 ​​is directly meshed with the first gear set 31 below the first gear set 31 to obtain transmission force. In some other embodiments, an intermediate gear set 33 is also meshed between the first gear set 31 and the second gear set 32. The intermediate gear set 33 can be set to different sizes to adjust the speed output by the driving component 2 and then output it to the second gear set 32, wherein the intermediate gear set 33 can also be set to the same size to play a transmission role.

[0038] Specifically, the driving component 2 is connected to the first gear group 31 via the driving output shaft 23, and the driving output shaft 23 drives the first gear group 31 to rotate, thereby driving the second gear group 32 to rotate, and when the first gear group 31 establishes a connection with the suction control component 4, it drives the suction control component 4 to work, thereby extracting the broken thrombus from the thrombectomy catheter 51.

[0039] In this embodiment, please refer to Figure 2 and Figure 3, please refer to the figure, the thrombus removal component 5 includes a thrombus removal catheter 51 extending in the distal direction of the length direction of the outer shell 1, the distal end of the thrombus removal catheter 51 is used to pass through the blood vessel pathway of the human body to reach the thrombus formation location, the proximal end of the thrombus removal catheter 51 is connected to the Y-shaped valve 53, and is connected to the suction control component 4 through the - bifurcation tube of the Y-shaped valve 53, and the thrombus is extracted through the suction control component 4, wherein a thrombus-breaking guide wire 52 is inserted into the thrombus removal catheter 51, and at least the distal part of the embolism guide wire is provided with a thrombus-breaking structure, which is a blade head with a cutting blade, and the blade head breaks up the thrombus by cutting; it can also be a spring tube with a curved structure, which breaks up the thrombus by stirring in the thrombus removal catheter 51; the proximal end of the thrombus-breaking guide wire 52 is connected to the second gear set 32, and the thrombus-breaking is rotated by obtaining the rotational power of the second gear set 32;

[0040] In this example, see Figure 2 and Figure 4 The suction control component 4 is integrated into the outer shell 1 of the handle, and obtains power by sharing the driving component 2 with the thrombus removal component 5 to perform the thrombus suction work after the thrombus is broken. During the operation using the thrombus removal handle 100 of the present application, the work of sucking thrombus does not need to be accompanied by the thrombus crushing all the time. Therefore, in order to enable the suction control component 4 to switch between working with the thrombus removal component 5 and working alone, the first gear set 31 is set to be movable along the length direction of the outer shell 1, and the first gear set 31 has a first position for establishing a connection with the suction control component 4 and a second position for disconnecting the connection with the suction control component 4. Here, when the first gear set 31 is in the first position, it is connected to the suction control component 4. The connection between the suction control component 4 and the first gear is to obtain the power of the driving component 2, so that the suction control component 4 works to suck the thrombus; when the first gear is in the second position, the connection with the suction control component 4 is disconnected. At this time, the suction control component 4 is independent of the driving component 2 and the transmission component 3, cannot obtain power and cannot work, and the first gear is always engaged with the second gear, thereby ensuring the operation of the thrombus removal component 5.

[0041] Among them, the thrombectomy catheter 51 and the second gear group 32 are located at the same longitudinal position, the suction control component 4 and the first gear group 31 are located at the same longitudinal position, and the output end of the thrombectomy catheter 51 is connected to the suction end of the suction control component 4 through the suction tube 7; the rotation speeds required by the suction control component 4 and the thrombectomy guide wire 52 of the thrombectomy catheter 51 are different, so different rotation speeds can be obtained by setting them respectively relative to the first gear group 31 and the second gear group 32, and the position setting directly relative to the first gear group 31 and the second gear group 32 can minimize the number of transmission components 3, improve the utilization rate of the internal space of the outer shell 1, and be more conducive to integrating the suction control component 4 into the outer shell 1 of the handle without causing the handle to be too large; further, the suction tube 7 can pass from the outside of the outer shell 1 to establish a connection between the suction control component 4 and the thrombectomy catheter 51.

[0042] In one embodiment, see Figure 5-Figure 7 Specifically, the suction control component 4 includes a connecting component 41, through which a releasable connection is established with the driving component 2. Here, the suction control component 4 realizes negative pressure suction by a rotational driving mode. The connecting component 41 is arranged at one end of the suction control component 4 close to the first gear set 31 for establishing a connection with the first gear set 31. An insertion groove 411 is arranged on a side of the connecting component 41 opposite to the first gear set 31. An insert 34 is arranged at a position opposite to the insertion groove 411 at one end of the first gear set 31 away from the driving component 2. In order to enable the insert 34 to be inserted into the insertion groove 411, The insert 34 is adapted to be connected by insertion, and the longitudinal cross-sectional shape of the insert 34 is adapted to the longitudinal cross-sectional shape of the insertion slot 411. Here, adaptation refers to having substantially the same radial contour line, thereby ensuring that there is no obstruction during insertion; further, in order to enable the connection assembly 41 to rotate with the rotation of the insert 34 after insertion, the longitudinal cross-sectional shapes of the insert 34 and the insertion slot 411 have a non-circular shape, so that at least when rotating, the insert 34 and the insertion slot 411 abut against each other in a non-circular position to limit the insertion, and the insert 34 drives the rotation of the insertion slot 411, thereby driving the rotation of the connection assembly 41;

[0043] In one embodiment, please refer to Figure 5 The longitudinal cross-section of the insert 34 can be set to a shape with a central symmetrical structure. Specifically, it can be set to a regular polygonal shape, so that the insertion groove 411 also has a regular polygonal shape. Here, it is set to a regular polygon, which is convenient for the insert 34 to be inserted. Even if the insertion groove 411 is not aligned accurately, it can ensure that the insertion can be completed by turning one side. The more sides of the polygon are set, the more conducive it is to the alignment of the insert 34 and the insertion groove 411.

[0044] In another embodiment, please refer to Figure 4 and Figure 6 The insert 34 may be a spline rod, and the insertion groove 411 is a spline groove adapted to the cross-sectional shape of the spline rod. Here, the spline method is more conducive to the stability of the insert 34 after being connected to the insertion groove 411, and can effectively prevent the insert 34 and the insertion groove 411 from slipping during high-speed rotation; and in order to further reduce the insertion difficulty of the insert 34 when the insertion groove 411 is not aligned accurately, the notch edge of the insertion groove 411 and the distal edge of the insert 34 are both set to an arc transition 412, so that during insertion, even if the alignment is not accurate, the smooth surface of the arc transition 412 can guide the corresponding position of the insert 34 to the insertion groove 411, thereby facilitating the insert 34 to be inserted into the insertion groove 411 more simply and quickly.

[0045] In this example, see Figure 7 The suction control component 4 also includes at least a rotating extrusion component 42, an extrusion plate 44 and a U-shaped tube 43. The end of the connecting component 41 away from the first gear set 31 is connected to the rotating extrusion component 42; the extrusion plate 44 at least partially covers the rotating extrusion component 42 along the rotation circumference of the rotating extrusion component 42, and there is a circumferential gap 45 between the extrusion plate 44 and the circumference of the rotating extrusion component 42, and the U-shaped tube 43 is at least partially arranged in the circumferential gap 45; the extrusion plate 44 is arranged above the thrombectomy catheter 51 in the longitudinal direction in the outer shell 1, and the extrusion plate 44 is provided with a semi-enclosed structure at least on one side close to the thrombectomy catheter 51, along the rotating extrusion component The rotation of 42 circumferentially covers the rotating extrusion component 42, so that the extrusion plate 44 can not only form an extrusion structure for the U-shaped tube 43 with the rotating extrusion component 42, but also isolate the suction control component 4 and the thrombus removal component 5 to avoid interference with each other, wherein the extrusion plate 44 is provided with two outlet holes for the U-shaped catheter to pass through at a position away from the thrombus removal catheter 51, and the outer shell 1 is provided with a mutual hole for the U-shaped tube 43 to pass through at a position opposite to the outlet holes; the U-shaped tube 43 is arranged in the circumferential gap 45, and negative pressure is generated by the extrusion of the circumferential extrusion component, so that after the blood suction tube is connected to the thrombus removal catheter 51, the broken thrombus is suctioned.

[0046] Please refer to Figure 7In order to make the rotating extrusion component 42 continuously produce the effect of squeezing and pushing the U-shaped tube 43 when rotating, the rotating extrusion component 42 has a variable circumferential gap 45 with the extrusion plate 44 when rotating, and the maximum value H2 of the circumferential gap 45 is greater than the outer tube diameter of the U-shaped tube 43, and the minimum value H1 of the circumferential gap 45 is less than the inner tube diameter of the U-shaped tube 43. Specifically, the rotating extrusion component 42 has an extrusion position and an avoidance position in the circumferential direction, wherein the width of the extrusion position from the axis is greater than the position of the avoidance position from the axis, thereby forming a minimum circumferential gap 45 between the extrusion position and the extrusion plate 44, and forming a maximum circumferential gap 45 at the avoidance position. The extrusion position can squeeze the thrombus entering from the entrance end of the U-shaped tube 43 and push it to the output end as it rotates, while the avoidance position forms a non-extrusion position, and the U-shaped tube 43 at the non-extrusion position is used for the entry of thrombus and for the extrusion position to squeeze and push, thereby continuously extracting the thrombus in the thrombectomy catheter 51 as the rotating extrusion component 42 rotates.

[0047] In one embodiment, see Figure 8-Figure 10 The driving component 2 includes a motor 21 and a pushing component 22. The motor 21 is used to provide a rotational driving force when connected to the power supply 6. The pushing component 22 is at least partially located outside the outer shell 1. The distal end of the motor 21 is provided with a driving output shaft 23, and the proximal end is connected to the part of the pushing component 22 located in the inner cavity of the outer shell 1; the pushing component 22 can move relative to the outer shell 1 along the length direction, and push the motor 21 to move the first gear set 31 between the first position and the second position; here, the motor 21 realizes the displacement in the length direction by pushing the pushing component 22 along the length direction, thereby driving the first gear set 31 to change the first position and the second position in the length direction; further, in order to enable the pushing component 22 to push the motor 21 to achieve connection and separation with the suction control component 4, it can also control the motor 21 to achieve forward and reverse rotation, Specifically, one end of the motor 21 connected to the pushing component 22 is provided with at least one pair of contact pieces 211 symmetrically arranged along the circumferential direction, the pushing component 22 includes two electrode pieces 222 that can rotate relative to the motor 21 and have opposite polarities and a switching knob 221 placed on the outside of the outer shell 1 for controlling the rotation of the contact piece 211, and a power supply 6 is also provided in the outer shell 1, and the electrode pieces 222 are respectively connected to the two poles of the power supply 6, and the two electrode pieces 222 can be rotated to the position of the contact piece 211 and are electrically connected to the two contact pieces 211 at the same time; wherein, the power supply 6 can be connected to a switch component 9, the switch component 9 is connected to the two electrode pieces 222 through an electrical connecting line, and the switch component 9 is used to control the establishment and release of the electrical connection between the power supply 6 and the electrode pieces 222, and the switch component 9 is exposed to the outer shell 1 for the operator to control the switch of the power supply 6.

[0048] Please refer to the following for further information: Fig. 9 and Fig.10The two contact pieces 211 of the motor 21 for connecting to the power supply 6 protrude from the proximal end of the motor 21, and the end of the pushing component 22 connected to the motor 21 is set as a rotatable structure, and the two electrode pieces 222 connected to the two poles of the power supply 6 are respectively arranged symmetrically along the axial direction, and the side walls of the two electrode pieces 222 are provided with raised metal contacts 223. When the two electrode pieces 222 rotate to the same circumferential position as the contact pieces 211 of the motor 21, the two electrode pieces 222 form an electrical contact connection with the two contact pieces 211 through the metal contacts 223, so as to provide the motor 21 with a stable state. Power is supplied to make it start rotating; here, except for the same circumferential position, all other positions are the stop positions of the motor 21, and when the two pole pieces are rotated 180 degrees, the two poles of the power supply 6 are reversed, so that the motor 21 can be reversed. At this time, the reverse rotation of the motor 21 will be transmitted to the thrombus-breaking guide wire 52 to cause it to reverse, so that the strip thrombus wrapped around the thrombus-breaking guide wire 52 is pushed out in the reverse direction due to the reversal and unwound. At this time, the electrodes are reversed again to make the motor 21 rotate forward, so that the originally entangled thrombus will no longer be entangled, and it can be discharged normally to avoid blockage.

[0049] For further information, see Figure 11-13 In order to facilitate the motor 21 to reset when suction is not needed after the motor 21 moves from the second position to the first position, the outer shell 1 also includes a reset trigger 8, which includes a push piece 82 and a pressing piece 81 vertically connected to each other, and a rotating shaft 85 is provided on the side wall of the connection position of the push piece 82 and the pressing piece 81. A through hole 11 is opened on a side of the outer shell 1 close to the motor 21 where the drive output shaft 23 is provided, and the rotating shaft 85 is connected to the hole wall of the through hole 11. After the connection, the push piece 82 is located in the inner cavity of the outer shell 1, and the pressing piece 81 is located outside the outer shell 1; here, the push piece 82 is on the outside The inner cavity of the shell 1 is used to push the motor 21, and the pressing piece 81 is used for the operator to pull the pushing piece 82 located in the inner cavity to push the motor 21 on the outer side of the outer shell 1; further, the pressing piece 81 has a working position away from the surface of the outer shell 1 and a reset position close to the surface of the outer shell 1. When the pressing piece 81 rotates from the working position to the reset position, the pushing piece 82 pushes the motor 21 to move the first gear set 31 from the first position to the second position; when it is in the working position, the pressing piece 81 is away from the side wall of the outer shell 1, and it is easy for the operator to pull the pressing piece 81 to reset the motor 21.

[0050] In some other embodiments, please refer to Figure 13-Figure 15In order to prevent the reset trigger 8 from affecting the transmission component 3 and the motor 21 when it is not working, the surfaces of the push piece 82 and the pressing piece 81 on the reset trigger 8 can be respectively provided with a first fixing hole 83 and a second fixing hole 84, and the inner surface of the outer shell 1 close to the push piece 82 and the outer surface close to the pressing piece 81 are respectively provided with a first fixing column 13 and a second fixing column 12, and the first fixing hole 83 and the second fixing hole 84 are respectively used to connect with the first fixing column 13 and the second fixing column 12, so as to form a rotation restriction on the reset trigger 8 after connection, thereby preventing the reset trigger 8 from rotating. Specifically, when the pressing piece 81 rotates to the working position, the first fixing hole 83 is connected to the first fixing column 13; when the pressing piece 81 rotates to the reset position, the second fixing hole 84 is connected to the second fixing column 12; in order to further stabilize the connection structure, the first fixing column 13 and the second fixing column 12 are provided with spherical heads, and the spherical heads are interference fit with the first fixing hole 83 and the second fixing hole 84, thereby preventing the connection structure from being easily released, thereby ensuring the stability of the connection structure.

[0051] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A thrombus removal handle, characterized in that: The invention comprises an outer shell, a thrombus removal component, a driving component, a transmission component and a suction control component, wherein the proximal end of the thrombus removal component is arranged in the outer shell, and the distal end is exposed from the outer shell, and each of the driving component, the transmission component and the suction control component is at least partially arranged in the outer shell; the suction control component is connected with the thrombus removal component, and the transmission component, driven by the driving component, has a first position for establishing connection with the suction control component and a second position for disconnecting from the suction control component; when the transmission component is in the first position, the suction control component works under the control of the driving component; when the transmission component is in the second position, the suction control component stops working.

2. The thrombus removal handle according to claim 1, characterized in that: The thrombus removal component includes a thrombus removal catheter extending toward the distal end along the length direction of the outer shell and exposed from the distal end of the outer shell, and the transmission component includes at least a first gear group and a second gear group arranged along the longitudinal direction of the outer shell, the first gear group is connected to the driving component, and the first gear group is always engaged with the second gear group; the thrombus removal catheter is connected to the suction control component, and a thrombus-breaking guide wire is passed through the thrombus removal catheter, and the proximal end of the thrombus-breaking guide wire is connected to the second gear group; the first gear group can be moved between the first position and the second position along the length direction of the outer shell driven by the driving component.

3. The thrombus removal handle according to claim 2, characterized in that: The thrombectomy catheter and the second gear set are located at the same longitudinal position, the suction control component and the first gear set are located at the same longitudinal position, and the output end of the thrombectomy catheter is connected to the suction end of the suction control component through a suction tube.

4. The thrombus removal handle according to claim 2, characterized in that: A connecting component is provided at one end of the suction control component close to the first gear group, and an insertion groove is opened in the connecting component. An insert is provided at one end of the first gear group away from the driving component, and the longitudinal cross-sectional shape of the insert is adapted to the longitudinal cross-sectional shape of the insertion groove, and the longitudinal cross-sectional shape of the insert has a non-circular shape.

5. The thrombus removal handle according to claim 4, characterized in that: The slot edge of the insert slot and the distal edge of the insert piece are both provided with arc-shaped transitions.

6. The thrombus removal handle according to claim 4, characterized in that: The suction control component also includes a rotating extrusion assembly, an extrusion plate and a U-shaped tube. The end of the connecting assembly away from the first gear set is connected to the rotating extrusion assembly; the extrusion plate at least partially covers the rotating extrusion assembly along the rotation circumference of the rotating extrusion assembly, and a circumferential gap is provided between the extrusion plate and the circumference of the rotating extrusion assembly, and the U-shaped tube is at least partially arranged in the circumferential gap.

7. The thrombus removal handle according to claim 6, characterized in that: When the rotating extrusion assembly rotates, there is a variable circumferential gap between it and the extrusion plate, the maximum value of the circumferential gap is greater than the outer diameter of the U-shaped tube, and the minimum value of the circumferential gap is less than the inner diameter of the U-shaped tube.

8. The thrombus removal handle according to claim 2, characterized in that: The driving component includes a motor and a pushing component, wherein the pushing component is at least partially located outside the outer shell, and the distal end of the motor is provided with a driving output shaft, and the proximal end is connected to the portion of the pushing component located in the inner cavity of the outer shell; the pushing component can move relative to the outer shell along the length direction, pushing the motor to move the first gear set between the first position and the second position.

9. The thrombus removal handle according to claim 8, characterized in that: One end of the motor connected to the pushing component is provided with at least one pair of contact pieces symmetrically arranged along the circumferential direction, and the pushing component includes two electrode pieces with opposite polarities that can rotate relative to the motor and a switching knob placed on the outside of the outer shell for controlling the rotation of the contact pieces. A power supply is also provided in the outer shell, and the electrode pieces are respectively connected to the two poles of the power supply. The two electrode pieces can rotate to the contact piece position and are electrically connected to the two contact pieces at the same time.

10. The thrombus removal handle according to claim 8, characterized in that: The outer shell also includes a reset trigger, which includes a push plate and a pressing plate connected vertically to each other, a rotating shaft is provided on the side wall of the connection position of the push plate and the pressing plate, a through hole is opened on a side of the outer shell close to the motor where the drive output shaft is provided, the rotating shaft is connected to the hole wall of the through hole, and after the connection, the push plate is located in the inner cavity of the outer shell, and the pressing plate is located outside the outer shell; the pressing plate has a working position away from the surface of the outer shell and a reset position close to the surface of the outer shell, and when the pressing plate rotates from the working position to the reset position, the push plate pushes the motor to move the first gear set from the first position to the second position.

11. The thrombus removal handle according to claim 10, characterized in that: The surfaces of the push piece and the pressing piece are respectively provided with a first fixing hole and a second fixing hole, and the inner surface of the outer shell close to the push piece and the outer surface close to the pressing piece are respectively provided with a first fixing column and a second fixing column, when the pressing piece is rotated to the working position, the first fixing hole is connected to the first fixing column; when the pressing piece is rotated to the reset position, the second fixing hole is connected to the second fixing column.

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