CN115227337B

CN115227337B - Vascular opening device

Info

Publication number: CN115227337B
Application number: CN202210915653.7A
Authority: CN
Inventors: 杜海洋; 夏顺; 黄定国
Original assignee: Shanghai Tendfo Medical Technologies Co Ltd
Current assignee: Shanghai Tendfo Medical Technologies Co Ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2024-01-12
Anticipated expiration: 2042-08-01
Also published as: CN115227337A; WO2024027190A1

Abstract

The invention provides a vascular opening device. It comprises the following steps: a guidewire, a cannula, and a control assembly; the guide wire comprises a spiral torsion section and a support section which are sequentially connected from a distal end to a proximal end; wherein the helically twisted section is radially expandable and contractible; the guide wire is arranged in the sleeve in a penetrating way and can axially move relative to the sleeve and circumferentially rotate; the proximal end of the sleeve is connected with the distal end of the control assembly, the proximal end of the support section is connected with the control assembly, the control assembly can drive the guide wire to axially move relative to the sleeve so that the spiral torsion section extends out of or is contained in the sleeve, and the control assembly can also drive the spiral torsion section extending out of the distal end of the sleeve to axially move. The embodiment of the invention can quickly and effectively remove the intravenous embolism pathological change substances by controlling the spiral torsion guide wire to axially move, and is beneficial to improving the treatment effect.

Description

Vascular opening device

Technical Field

The invention relates to the technical field of medical appliances, in particular to a vascular opening device.

Background

Minimally invasive interventional surgery, an important branch of contemporary minimally invasive surgery, is a product of today's aging population of society. Chronic venous leg disease is a progressive, devastating disease that ultimately leads to venous leg ulcers, thereby compromising the quality of life of the patient.

Over 1.2 million patients with venous disease are worldwide annually, of which only 1.3% receive treatment. Mainly due to the defects of the current treatment technology: thermal ablation therapy is not accurate enough, and either radio frequency ablation or laser therapy can release a large amount of heat, thereby damaging nerves and tissues surrounding the affected area. Sclerotherapy is chemical ablation that, by disrupting the lining of the intravenous cells, can cause the vein to collapse and close over time. Sclerotherapy has a better patient experience than thermal ablation therapy, but has poor therapeutic effects. The thermal ablation effect can reach 90%, but the sclerotherapy effect is only 50-80%, and a plurality of operations are usually needed to eliminate symptoms. Chemotherapy with the novel cyanoacrylate is as effective as thermal ablation, but it remains in the body and may cause allergic reactions in some people, in some cases, there is still a need to remove the affected intravenous lesions.

Minimally invasive interventional therapy does not produce thermal injury, chemical injury and foreign matter residue. However, the current minimally invasive interventional therapy scheme adopts common guide wires and the like, and needs improvement in the aspects of therapeutic effect and therapeutic efficiency.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present application and thus may include information that does not constitute a related art known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the invention aims to provide a vascular opening device which can quickly and effectively remove intravenous embolism pathological changes by controlling the spiral torsion guide wire to axially move, thereby being beneficial to improving the treatment effect.

To solve the above technical problem, an embodiment of the present invention provides a vascular opening device, including: a guidewire, comprising: a spiral torsion section and a support section which are connected in sequence from the distal end to the proximal end; wherein the helically twisted section is radially expandable and contractible;

the guide wire penetrates through the sleeve and can axially move and circumferentially rotate relative to the sleeve; and

the control assembly is connected with the proximal end of the sleeve and the distal end of the control assembly, the proximal end of the supporting section is connected with the control assembly, the control assembly can drive the guide wire to axially move relative to the sleeve so that the spiral torsion section extends out of or is contained in the sleeve, and the control assembly can also drive the spiral torsion section extending out of the distal end of the sleeve to axially move.

As an example, the control assembly is further capable of driving the helically twisted section extending beyond the distal end of the cannula to synchronously rotate and move, or to vibrate radially and synchronously rotate and move, or to move axially and vibrate radially.

As one embodiment, the control assembly comprises a handle housing and a guidewire drive mechanism coupled to the support section; the guide wire transmission mechanism is arranged in the handle shell and used for driving the guide wire to axially move;

the guide wire transmission mechanism comprises:

the finger wheel is rotatably arranged on the handle shell, and two ends of the finger wheel are exposed out of the handle shell;

the rotating shaft is rotatably arranged on the handle shell and is connected with the finger wheel;

a pinion gear connected to the rotation shaft;

a rack gear engaged with the pinion gear; the proximal end of the guide wire is connected with the distal end of the rack;

the sliding groove is fixedly arranged in the handle shell and axially extends along the handle shell, and the rack is in sliding fit with the sliding groove; when the finger wheel is rotated, the pinion can drive the rack to axially move relative to the chute;

optionally, the rotating shaft and the pinion are connected by a flat key.

As an embodiment, the control assembly further comprises: the ultrasonic vibration mechanism is arranged in the handle shell, is connected with the guide wire and is used for driving the guide wire to vibrate radially;

optionally, the ultrasonic vibration mechanism includes: an ultrasonic motor and a motor connector;

the motor connector includes: a first connection portion and a second connection portion;

the first connecting part is axially arranged in parallel with the handle shell, the second connecting part is obliquely arranged relative to the first connecting part and is connected with the first connecting part, and the other end of the second connecting part is connected with the output end of the ultrasonic motor; the first connecting part is tubular, and the proximal end of the guide wire penetrates through the first connecting part and out of the proximal end of the first connecting part and can axially move relative to the first connecting part;

optionally, a transmission spiral groove is arranged in the first connecting part, and a transmission thread is arranged at the proximal end of the guide wire; the drive screw is adapted to the drive screw groove to convert axial movement of the guide wire proximal to the first connection portion into synchronized rotation and movement of the guide wire distal to the first connection portion.

As an embodiment, the rack and the chute are provided with mutually matched anti-misoperation mechanisms;

optionally, the anti-slip mechanism includes: the anti-skid device comprises a sliding groove, a protrusion and an anti-skid groove, wherein the protrusion is respectively arranged on the sliding groove, the anti-skid groove is arranged on the rack, and the protrusion is matched with the anti-skid groove of the rack.

As one embodiment, the control assembly comprises a handle housing and a rotary motion transmission mechanism arranged in the handle housing; the rotary movement transmission mechanism is used for driving the guide wire to synchronously move and rotate;

optionally, the rotary motion transmission mechanism includes: a finger wheel; the finger wheel is rotatably arranged on the handle shell, and the axial direction of the finger wheel is parallel to the axial direction of the handle shell; the finger wheel center is provided with a transmission thread groove, and the proximal end of the guide wire is provided with a transmission thread matched with the transmission thread groove so as to drive the guide wire to synchronously rotate and move when the finger wheel rotates.

As one embodiment, the ultrasonic vibration mechanism further includes a motor controller and a power supply;

the ultrasonic motor, the motor controller and the power supply are electrically connected in sequence; the motor controller is used for controlling the starting and stopping of the ultrasonic motor and controlling the single working time length of the ultrasonic motor;

optionally, the ultrasonic vibration mechanism further comprises a button; the button is arranged on the handle shell and is connected with the ultrasonic controller.

As one embodiment, the guidewire comprises a core wire and a wire wrap;

the core wire comprises a core wire torsion section and a core wire supporting section which are sequentially connected from a distal end to a proximal end;

the wire winding spiral is wound on the core wire torsion section;

optionally, the diameter of the core wire support section is greater than the diameter of the core wire torsion section.

As one embodiment, the twisted section of the core wire is formed by spirally winding a shape memory wire with an S-shaped plane.

As one embodiment, the filament winding is provided with capillary fibers;

the distal end of the core wire torsion section is provided with a guide head;

optionally, the surface of the twisted section of the core wire and/or the wire winding is provided with a developing layer.

According to the technical scheme, the invention has at least the following advantages and positive effects:

according to the vascular opening device provided by the embodiment of the invention, the spiral torsion section of the guide wire is driven by the control component to move along the axial direction, so that the pathological change substances in the blood vessel can be rapidly and uniformly cut and scraped, the cleaning effect and the cleaning efficiency are improved, and the blood vessel is rapidly dredged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being understood that the drawings in the following description are only embodiments of the present invention and that other drawings may be obtained according to the drawings provided without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a vascular opening device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a helically twisted section of a guidewire of an vascular opening device according to an embodiment of the present invention in a released state;

FIG. 3 is a schematic view showing a structure in which a helically twisted section of a guidewire of an vascular opening device according to an embodiment of the present invention is received in a cannula;

FIG. 4 is a schematic view of a partially enlarged structure of a helically twisted section of a guidewire of an vascular opening device according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a connection structure between a guide wire and an ultrasonic motor of a vascular opening device according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a motor connector of the vascular opening device according to the embodiment of the present invention;

fig. 7 is a schematic structural view of a guide wire transmission mechanism of a vascular opening device according to an embodiment of the present invention;

fig. 8 is a schematic view of a transmission structure of a guide wire transmission mechanism of a vascular opening device according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a rotary transmission mechanism of a vascular opening device according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a connection structure of an ultrasonic vibration mechanism of a vascular opening device according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a handle housing of a vascular opening device according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present invention. However, the claimed invention may be practiced without these specific details and with various changes and modifications based on the following embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, unless explicitly stated otherwise, the terms "connected," "connected," and the like should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

In the description of the present invention, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; axial refers to a direction parallel to the line connecting the distal center and the proximal center of the medical device in its natural state. The above definitions are for convenience of description only and are not to be construed as limiting the invention.

Referring to fig. 1, the embodiment of the invention provides a vascular opening device which can be used for dredging chronic vein of lower limbs, thereby relieving vascular obstruction, improving the blood circulation system of a human body, and avoiding pain, heaviness, leg swelling, eczema, subsequent rupture, ulcer and the like caused by vascular obstruction. The vascular opening device of the present embodiment mainly includes: a guide wire 1, a cannula 2 and a control assembly 3.

The spiral torsion section at the far end of the guide wire 1 can extend into the blockage position of the vascular lesions, and the blockage of the vascular lesions, especially the atherosclerosis and the like are carried out of the body after being cut and scraped. The sleeve 2 is capable of receiving a helically twisted section of the guidewire 1. The control assembly 3 is connected to the proximal ends of the guide wire 1 and the sleeve 2 and is capable of driving the guide wire 1 to move axially relative to the sleeve 2 so that the helically twisted section of the guide wire 1 extends beyond the distal end of the sleeve, and the control assembly 3 is further capable of driving the helically twisted section to move axially to scrape off endovascular plugs.

Referring to fig. 1 to 4, the guide wire 1 includes a helically twisted section and a support section connected in sequence from a distal end to a proximal end. Wherein the helically twisted section is capable of radial expansion and contraction. After the guide wire 1 reaches a blood vessel blocking position (or a patient position), the control component 3 drives the spiral torsion section of the guide wire 1 to extend out of the far end of the sleeve 2 and extend into a blood vessel blocking object, the spiral torsion section can be attached to and support the inner wall of the blood vessel after being released, then the control component 3 drives the guide wire to axially move, so that the blocking object on the wall of the blood vessel is continuously cut and scraped through the spiral torsion section, and finally the blocking object is brought out of the body through the spiral torsion section.

The guidewire 1 may include a core wire 11, a wire wrap 12, a capillary fiber 13, and a guide head. The core wire 11 may include a core wire torsion section 111 and a core wire support section 112 connected in sequence from a distal end to a proximal end. The core wire support section 112 is located within the sleeve 2. The diameter of the core wire support section 112 may be greater than the diameter of the core wire torsion section 111 so that the core wire torsion section may be better driven in motion. The twisted section 111 of the core wire can be formed by spirally winding a shape memory wire with an S-shaped plane. Specifically, the wire with shape memory capability can be firstly processed into a structure with an S-shaped plane, and then is curled and shaped into a spiral torsion structure along the axial direction. The wire with the S-shaped plane enables the core wire to have certain expansion capability, so that the spiral torsion section can radially and elastically expand and contract, the core wire torsion section 111 can change along with the change of the diameter and the size of the blood vessel, the periphery of the guide wire 1 can be tightly attached to the inner wall of the blood vessel, and meanwhile, supporting force in multiple directions can be provided, and the inner wall of the blood vessel can be supported better. That is, the helical torsion section is elastically supported by the inner wall of the blood vessel by being reduced in length and increased in radial dimension when released, as compared with when housed in the sleeve 2.

The wire 12 is helically wound around the core wire torsion 111, it being understood that the wire 12 may also be wound from the distal end of the core wire to the proximal end of the core wire, without limitation. The support of the guide wire 1 against the inner wall of the vessel can be further enhanced by the wire winding 12. Further, the filament winding 12 may be provided with capillary fibers 13. The capillary fibers 13 may be arranged at intervals on the wire 12 wound around the twisted core wire section 111, or the capillary fibers 13 may be arranged continuously. The twisted section of the core wire around which the winding wire 12 is provided forms a helically twisted section of the guide wire 1. The capillary fiber 13 can disperse the supporting force of the guide wire on the vascular wall, the bending moment at each part is mutually and effectively supported when the guide wire is pushed, and the guide wire can be rotationally recovered into the sleeve 2 when the guide wire is withdrawn. The capillary fibers 13 can also adsorb the guide wire to remove the dropped tiny plugs to carry them out of the body. The capillary fibers 13 can also be coated with a drug, and can perform drug treatment more accurately. The spiral torsion section of the guide wire 1 can be unfolded and cleaned after being used and reused.

The guide head 14 is disposed at the distal end of the twisted core wire section 111, and the proximal end of the guide head 14 can be welded to the distal end of the twisted core wire section 111. The distal end of the guide head 14 may have a spherical guide surface to facilitate advancement of the guidewire through the vessel to the lesion.

The surface of the twisted section 111 and/or the surface of the wound wire may be provided with a developing layer, which may be made of a radiopaque material, such as a platinum-tungsten material, so that the guide wire may have better visibility in an X-ray environment, and the position of the helically twisted section may be easily observed and adjusted during surgery. It will be appreciated that other visualization structures may be employed with the vascular opening device, as long as the guidewire is capable of providing a degree of visualization, and no particular limitation is placed herein.

Referring to fig. 7 and 8, the control assembly 3 includes a handle housing 31 and a guide wire drive mechanism 5 coupled to the support section. The guide wire transmission mechanism 5 is provided in the handle housing 31 and serves to drive the guide wire 1 to move axially. The guide wire drive mechanism 5 may include: finger wheel 51, chute 52, rack 53, pinion 54, and rotation shaft 55. Wherein the finger wheel 51 is rotatably provided on the handle housing 31 with both ends thereof exposed out of the handle housing 31, so that the finger wheel 51 can be operated by both sides of the handle. The rotation shaft 55 is rotatably provided to the handle housing 31 and connected to the finger wheel 51. Both ends of the rotation shaft 55 may be connected to the handle housing 31 through bearings 57. The thumbwheel 51 may have a central aperture and the rotation shaft 55 may pass through the central aperture of the thumbwheel 51 and be fixedly coupled to the thumbwheel 51. Pinion 54 is connected to a rotation shaft 55. Specifically, the pinion 54 is sleeved on the rotation shaft 55, the rotation shaft 55 and the pinion 54 may be fixedly connected through the flat key 56, or the rotation shaft 55 may be bonded and fixed with the pinion 54 through glue, and the connection mode of the rotation shaft 55 and the pinion 54 is not particularly limited in this embodiment. The chute 52 is fixedly arranged in the handle housing 31 and extends along the axial direction of the handle housing 31, and the rack 53 is in sliding fit with the chute 52. The rack 53 is also meshed with a pinion 54. The tail end of the guide wire 1 passes through the first connecting portion 421 and is connected to the distal end of the rack 53, so that the rack 53 can drive the guide wire 1 to move axially.

When the thumbwheel 51 is turned, the pinion 54 can drive the rack 53 to move axially relative to the runner 52, thereby driving the guide wire 1 in motion. When the finger wheel 51 rotates, the pinion 54 is driven to rotate, the pinion drives the rack 53 to move back and forth along the chute 52, and the range of the back and forth movement of the rack 53 is the treatment range. For example, the length of the chute 52 may be 150-250 mm, the length of the rack may be 80-130 mm, and the treatment range is a range in which the rack 53 can move along the chute 52, and may be specifically set according to the required range of treatment, and the value of the rack is not specifically limited.

Wherein, the distal end of the rack 53 can be provided with a connecting hole, and the proximal end of the guide wire 1 is connected with the connecting hole. The chute 52 can be provided with two limit grooves extending along the axial direction of the chute, and correspondingly, the two ends of one side of the rack 53 facing the chute are provided with convex ribs matched with the limit grooves, and the convex ribs can slide in the limit grooves of the chute 52 to ensure the movement precision of the guide wire 1.

It should be noted that the pinion 54 may be a small-module pinion, which may effectively improve the accuracy of position control during movement of the guide wire.

The rack 53 and the chute 52 are provided with mutually matched anti-slip mechanisms. Specifically, the anti-slip mechanism may include: the protrusion of the sliding groove 52 is matched with the anti-skid groove of the rack 53, so that the rack can be prevented from sliding randomly, and the rack can be moved only by applying enough force.

It is worth mentioning that the control assembly 3 is also able to drive the radial vibrations of the helically twisted section extending out of the distal end of the cannula 2. Accordingly, the control assembly 3 may also include an ultrasonic vibration mechanism 4 disposed within the handle housing 31. Wherein, ultrasonic vibration mechanism 4 links to each other with seal wire 1, is used for driving seal wire 1 radial vibration, reaches the effect of deep removal jam.

The ultrasonic vibration mechanism 4 may include: an ultrasonic motor 41, a motor connector 42, a motor controller 43, a power supply 44, and a button 45.

The ultrasonic motor 41 is connected to the proximal end of the guide wire by a motor connection 42 and is used to drive the radial vibration of the support section of the guide wire 1, thereby driving the radial vibration of the helically twisted section of the guide wire 1. The ultrasonic motor 41 is an ultrasonic generator, and the output end of the ultrasonic motor 41 may be a shaft capable of outputting radial vibration. The motor connector 42 connects the output shaft of the ultrasonic motor 41 with the guide wire 1. The ultrasonic motor 41 can output vibration with a certain frequency, so that the spiral torsion section of the guide wire 1 is driven to vibrate radially according to the certain frequency, and the blockage can be removed more effectively by the spiral torsion section.

Referring to fig. 5 and 6, the motor connector 42 may include: the first connection portion 421 and the second connection portion 422. The first connection portion 421 is disposed parallel to the axial direction of the handle housing 31, and the second connection portion 422 is disposed obliquely with respect to the first connection portion 421 and is connected to the first connection portion 421. The other end of the second connection part 422 is connected to the output terminal of the ultrasonic motor 41. The first connection portion 421 is tubular, and the distal end of the first connection portion 421 may be connected to the proximal end of the cannula 2, or the proximal end of the cannula 2 may be connected to the distal end of the handle housing 31. The proximal end of the guide wire 1 is inserted through the first connecting portion 421 and extends out of the proximal end of the first connecting portion 421. The guide wire 1 can be tightly contacted with the inner wall of the first connecting part 421, when the ultrasonic motor 41 outputs vibration, the vibration is transmitted to the first connecting part 421 through the second connecting part, and then the first connecting part 421 drives the guide wire to vibrate radially. The guide wire 1 is axially movable relative to the first connection.

The control assembly 3 in the previous embodiment is capable of driving the guide wire to vibrate radially and move axially. Further, in some examples, the control assembly 3 is also capable of driving the helically twisted section of the guidewire to rotate and move synchronously, and at the same time is also capable of driving the helically twisted section to vibrate radially. Specifically, the first connecting portion 421 is further provided with a transmission spiral groove 4211, and the proximal end of the guide wire 1 is provided with a transmission thread. The drive threads are adapted to drive the helical groove 4211 to translate axial movement of the guidewire proximal of the first connection 421 into synchronous rotation and movement of the guidewire distal of the first connection 421. Namely, the transmission spiral groove 4211 in the first connecting part 421 and the transmission thread 1121 on the guide wire form a rotary motion control mechanism of the guide wire, and the rotary motion control mechanism and the guide wire transmission mechanism 5 cooperate to drive the spiral torsion section of the guide wire 1 to synchronously rotate and move, and can also drive the guide wire to vibrate radially through the ultrasonic vibration mechanism 4. The spiral torsion section can apply acting force to the blockage from a plurality of directions when in rotary movement, so that the blockage in the blood vessel can be removed more uniformly and efficiently. It can be appreciated that when the inner wall of the first connecting portion 421 is not provided with the transmission thread groove, the guide wire transmission mechanism 5 can drive the spiral torsion section to axially move, and does not perform rotational movement any more, so that the blockage in the blood vessel can be well removed.

As an alternative to the above-described rotation transmission mechanism, in some examples, referring to fig. 9, the rotation transmission mechanism may include: finger wheel 51, finger wheel 51 is rotatably disposed on handle housing 31, and finger wheel 61 is axially disposed parallel to handle housing 31. The center of the finger wheel 51 is provided with a transmission spiral groove, and the proximal end of the guide wire 1 is provided with transmission threads 1121 matched with the transmission spiral groove so as to drive the guide wire to synchronously rotate and move when the finger wheel 51 rotates. When the control assembly further comprises the aforementioned ultrasonic vibration mechanism 4, a smooth inner wall may be employed in the first connecting portion 41 at this time, and no transmission thread groove is required, so that the guide wire 1 can be synchronously moved and rotated in the first connecting portion 41. The transmission thread 1121 at the proximal end of the guide wire 1 may be directly formed at the proximal end of the supporting section of the guide wire, or a thread sleeve with transmission thread may be fixedly sleeved at the proximal end of the supporting section of the guide wire 1. When the finger wheel 51 is laterally moved, a helical driving force acts on the guide wire to drive the guide wire to move and rotate synchronously. When the doctor rotates the finger wheel 51 transversely, the doctor can directly feel feedback of the retracting force and the rotating force led in by the guide wire 1, so that the doctor can finish the operation better. The length of the drive thread section of the support section 112 of the guide wire 1 with the drive thread can be determined according to the treatment scope.

Referring to fig. 10 and 11, a motor controller 43 is electrically connected to a power source 44, and the motor controller 43 is electrically connected to the ultrasonic motor 41. The motor controller 43 is used for controlling the start and stop of the ultrasonic motor 41 and the single operation time period. A button 45 is provided on the handle housing 31, the button 45 being connected to the motor controller 43. The motor controller 43 has a timer function, and when the button 45 is pressed, the motor controller 43 controls the ultrasonic motor 41 to start working and continuously outputs radial vibration until a preset single working time is reached, the motor controller 43 controls the ultrasonic motor 41 to stop working, or when the button 45 is pressed again in working, the motor controller 43 controls the ultrasonic motor 41 to stop working. The button 45 can be arranged in the middle of the side surface of the handle shell 31, so that a doctor can operate the button conveniently, the ultrasonic motor 41 can be started after clicking the button 45 once, and the ultrasonic motor 41 stops after clicking the button 45 again, so that the guide wire 1 can be controlled to advance or retreat manually.

The handle shell 31 is used for grasping by a doctor, the handle shell 31 is integrally of a straight handle slight inclined structure, and an ultrasonic motor 41 is arranged in the front end triangular slight inclined structure. The finger wheels can be adjusted on both sides of the front end of the handle, and the operation is convenient. The handle shell can be made of high polymer ABS, PC and other materials, and has the advantages of light weight and convenience in sterilization.

In the vascular opening device of the embodiment, other parts except the standard parts can be made of materials such as high polymer materials, PC, ABS and the like, and stainless steel can be used for improving strength of pinions, racks and the like. The sleeve 2 may be made of Pebax or the like, and may have a hydrophilic coating on its outer surface.

The vascular opening device of this embodiment is used as follows:

inserting the guide wire into the affected part of vascular diseases through skin during interventional operation, pushing the guide wire out of the sleeve until the end of the guide wire completely exceeds the affected part, fully contacting capillary fibers of the guide wire with the affected part of the vascular after the spiral torsion section of the guide wire is completely released, starting ultrasonic vibration, pushing the finger wheel to reciprocate, removing tiny plugs in the vascular by spiral torsion, adsorbing by the capillary fibers, pulling the tiny plugs into the sleeve, and pulling out of the body. After the guide wire is cleaned, the vascular opening device can be reused to continuously remove the blockage. If the obstruction is effectively cleared, the handle can be dragged to wholly withdraw the vascular opening device.

Based on the technical scheme, the invention has at least the following advantages and positive effects:

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A vascular opening device, comprising:

a guidewire, comprising: a spiral torsion section and a support section which are connected in sequence from the distal end to the proximal end; wherein the helically twisted section is radially expandable and contractible;

wherein the guide wire comprises a core wire and a winding wire;

the wire winding spiral is wound on the core wire torsion section; the guide wire penetrates through the sleeve and can axially move and circumferentially rotate relative to the sleeve; and

the proximal end of the sleeve is connected with the distal end of the control assembly, the proximal end of the support section is connected with the control assembly, the control assembly can drive the guide wire to axially move relative to the sleeve so as to enable the spiral torsion section to extend out of or be contained in the sleeve, and the control assembly can also drive the spiral torsion section extending out of the distal end of the sleeve to axially move;

the control assembly includes: the ultrasonic vibration mechanism is connected with the guide wire and is used for driving the guide wire to vibrate radially;

the ultrasonic vibration mechanism includes: an ultrasonic motor and a motor connector;

the first connecting part is axially arranged in parallel with the handle shell, the second connecting part is obliquely arranged relative to the first connecting part and is connected with the first connecting part, and the other end of the second connecting part is connected with the output end of the ultrasonic motor; the first connecting portion is tubular, and the proximal end of the guide wire penetrates through the first connecting portion and out of the proximal end of the first connecting portion and can axially move relative to the first connecting portion.

2. The vascular opening device of claim 1, wherein the control assembly further comprises a guidewire drive mechanism coupled to the support segment; the guide wire transmission mechanism is arranged in the handle shell and used for driving the guide wire to axially move;

the guide wire transmission mechanism comprises:

a pinion gear connected to the rotation shaft;

the sliding groove is fixedly arranged in the handle shell and axially extends along the handle shell, and the rack is in sliding fit with the sliding groove; when the finger wheel is rotated, the pinion can drive the rack to axially move relative to the chute.

3. The vascular opening device according to claim 2, wherein the rotation shaft and the pinion gear are connected by a flat key.

4. The vascular opening device according to claim 2, wherein a transmission spiral groove is arranged in the first connecting part, and a transmission thread is arranged at the proximal end of the guide wire; the drive screw is adapted to the drive screw groove to convert axial movement of the guide wire proximal to the first connection portion into synchronized rotation and movement of the guide wire distal to the first connection portion.

5. The vascular opening device according to claim 2, wherein the rack and the chute are provided with mutually matched anti-slip mechanisms.

6. The vascular opening device according to claim 5, wherein the anti-slip mechanism comprises: the anti-skid device comprises a sliding groove, a protrusion and an anti-skid groove, wherein the protrusion is respectively arranged on the sliding groove, the anti-skid groove is arranged on the rack, and the protrusion is matched with the anti-skid groove of the rack.

7. The vascular opening device of claim 1, wherein the control assembly further comprises a rotational movement transmission mechanism disposed within the handle housing; the rotary movement transmission mechanism is used for driving the guide wire to synchronously move and rotate.

8. The vascular opening device of claim 7, wherein the rotational movement transmission mechanism comprises: a finger wheel; the finger wheel is rotatably arranged on the handle shell, and the axial direction of the finger wheel is parallel to the axial direction of the handle shell; the finger wheel center is provided with a transmission thread groove, and the proximal end of the guide wire is provided with a transmission thread matched with the transmission thread groove so as to drive the guide wire to synchronously rotate and move when the finger wheel rotates.

9. The vascular opening device of claim 1, wherein the ultrasonic vibration mechanism further comprises a motor controller and a power source;

the ultrasonic motor, the motor controller and the power supply are electrically connected in sequence; the motor controller is used for controlling the starting and stopping of the ultrasonic motor and controlling the single working time length of the ultrasonic motor.

10. The vascular opening device according to claim 9, wherein the ultrasonic vibration mechanism further comprises a button; the button is arranged on the handle shell and is connected with the motor controller.

11. The vascular opening device of claim 1, wherein the diameter of the core wire support section is greater than the diameter of the core wire twist section.

12. The vascular opening device according to claim 1, wherein the twisted section of the core wire is formed by spirally winding a shape memory wire having an S-shaped plane.

13. The vascular opening device according to claim 1 or 11, wherein capillary fibers are provided on the wire wrap;

the distal end of the core wire torsion section is provided with a guide head.

14. The vascular opening device according to claim 1, wherein the surface of the twisted section of core wire and/or the wire winding is provided with a developing layer.