A vascular treatment device

Abstract

The present invention relates to a vascular treatment device, comprising a handle, a sleeve mounted on the handle, the handle comprising a driving mechanism, the sleeve comprising a guide wire that can be driven to move by the driving mechanism, a sheath mounted on the guide wire, and an injection mechanism connected to the sheath, and the vascular treatment device also comprises a propulsion mechanism connected to the injection mechanism and capable of controlling the injection dose. The present invention can provide a controllable and accurate injection dose through the propulsion mechanism, so that it is not difficult to operate the injection propulsion when there is too much injection, and the device can slowly inject and control the injection speed, which can reduce the occurrence of accidents.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and in particular relates to a vascular treatment device. Background Art

[0002] Varicose veins of the lower limbs are a common surgical disease that occurs in the general population. According to epidemiological statistics in recent years, the incidence rate is about 15% in men and about 25% in women. Moreover, the patient population is gradually becoming younger. Severe cases will greatly affect the health and life of the patient, causing a burden on the family and society.

[0003] Among the treatments for varicose veins, there are traditional treatments such as simple high ligation and high ligation and stripping. Traditional treatments have a high clinical success rate, but they leave significant incision scars and take a long time to recover. Emerging treatments include laser therapy, intravenous microwave radiofrequency closure, intravenous vascular sclerotherapy, and percutaneous venous bioprosthesis implantation. Emerging treatments are minimally invasive and easy to recover. According to relevant studies, radiofrequency closure has a better therapeutic effect.

[0004] When injecting a needle into a vascular treatment device of Covidien, using the thumb to push the needle directly may reduce the accuracy of the injection; the knob switch is placed at the top, which makes it easy to touch the knob when pushing the syringe. The style of the shell and the connection method of each part need to be improved.

[0005] Patent No. 200780033995.X discloses a vascular treatment device, which also uses the thumb to directly push the syringe during needle injection, which may reduce the accuracy of the injection. Summary of the invention

[0006] The object of the present invention is to provide a vascular treatment device capable of accurately controlling the injection volume of an injection.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] On the one hand, the present invention provides a vascular treatment device, comprising a handle and a box installed on the handle, the handle comprising a driving mechanism, the box comprising a guide wire that can be driven to move by the driving mechanism, a sheath mounted on the guide wire, and an injection mechanism connected to the sheath, the vascular treatment device also comprising a propulsion mechanism connected to the injection mechanism and capable of controlling the injection dose.

[0009] The present invention uses a propulsion mechanism to push the injection mechanism for injection, so that the injection amount of the injection can be accurately controlled, so that it is not difficult to operate the injection mechanism when there is too much injection, and the propulsion mechanism can control the injection mechanism to inject slowly, thereby reducing the occurrence of accidents by controlling the injection speed.

[0010] Preferably, the propulsion mechanism includes a driving member and a transmission assembly connected to the driving member, and the transmission assembly is connected to the injection mechanism. In the present invention, the driving member drives the transmission assembly to move, and the movement of the transmission assembly further drives the injection mechanism to perform injection. The movement of the driving member can be caused by a person applying a force to make it move, or by using electricity or other power to drive the driving member to move. The driving member can have a variety of movement modes, such as rotation, sliding, etc. The transmission assembly is set according to the movement mode of the driving member. The design principle of the transmission assembly is that after the movement of the driving member is converted by the transmission assembly, the push rod of the injection mechanism can be moved to the distal end to achieve the injection of the injection.

[0011] According to one embodiment, the transmission assembly includes a first mating part detachably connected to the injection mechanism, a second mating part fixedly connected to the driving member and capable of moving in coordination with the first mating part, the first mating part is slidably connected to the handle, and the driving member and / or the second mating part is rotatably connected to the handle. This embodiment can realize the movement of the push rod of the injection mechanism by rotating the driving member, thereby making the propulsion mechanism smaller in size and lighter in weight, which is convenient for medical staff to use.

[0012] Furthermore, the first matching member includes a support member located at the proximal end and detachably connected to the injection mechanism, two racks whose proximal ends are respectively connected to the left and right ends of the support member, and the second matching member is a gear that can cooperate with the racks for movement, and the two racks are respectively slidably connected to the left and right sides of the handle. By providing two racks, the first matching member can be more stable when sliding relative to the handle under the drive of the driving member, and is not prone to deviation, so that the injection amount and injection speed of the injection mechanism can be better controlled.

[0013] Furthermore, the support member includes a U-shaped support body with an opening facing downward, a buckle formed at the upper end of the support body, the rack is fixedly connected to the lower end of the support body, and the buckle is detachably connected to the injection mechanism. By adopting a U-shaped support body, the driving member can be set between the two racks, and the thumb can conveniently operate the driving member through the gap of the support body, thereby achieving accurate pushing of the injection speed of the injection mechanism.

[0014] Furthermore, the driving member includes a roller whose diameter is larger than that of the second matching member and whose surface is formed with a concave-convex structure, so that medical staff can operate the roller conveniently.

[0015] Furthermore, the driving member includes connecting parts located on the left and right sides, and the second matching parts include two connecting parts located on the left and right sides, and the second matching parts on each side are respectively fixedly connected to the connecting parts, and a through hole is formed on the handle for the connecting part to pass through and allow the connecting part to rotate around its own axis. By adopting a connecting part with a smooth surface to be rotatably connected to the handle, the friction during rotation can be reduced, thereby facilitating use by medical staff.

[0016] Specifically, the roller is located between the two connecting parts and is fixedly connected to the two connecting parts respectively, thereby forming a stepped structure, so as to transmit the power provided by the thumb pushing the roller to the injection mechanism.

[0017] In the present invention, the coordination of the gear and the rack to accurately control the injection volume of the injection can be controlled by those skilled in the art by designing or selecting the required gear and rack. For example, one rotation of the roller drives the gear to rotate one circle, and one rotation of the gear drives the rack to advance 10 tooth pitches, and the corresponding injection mechanism injects 2 ml of hardener.

[0018] Preferably, the driving mechanism includes a power source disposed above the proximal end of the handle, a controller electrically connected to the power source, a power source electrically connected to the controller, a button mounted on the handle, a trigger electrically connected to the controller and capable of being triggered by the button, and a knob electrically connected to the controller and located below the proximal end of the handle. In this embodiment, by disposing the knob at the bottom of the proximal end of the handle and the driving member of the propulsion mechanism being located above the proximal end of the handle, when the vascular treatment device is in use, the driving member and the knob are respectively located above and below the user's hand, thereby effectively avoiding the risk of accidentally touching the knob when operating the propulsion mechanism or performing other operations.

[0019] The driving mechanism of this embodiment has a motor control program written in the controller, and the knob can achieve stepless speed regulation of the guide wire. During the operation, the guide wire and the sheath are inserted into the blood vessel together. The speed of the guide wire rotation is controlled by adjusting the knob, and the button is pressed to trigger the trigger to start the power source, thereby driving the guide wire to rotate and cause mechanical damage to the inner wall of the blood vessel, thereby causing the blood vessel to spasm.

[0020] Further preferably, the controller is located at the proximal end of the handle, and the power source is a dry cell battery, which is located below the distal end of the handle, thereby making the layout of the drive mechanism on the handle more reasonable and the weight evenly distributed, which facilitates the stability of the vascular treatment device during use and saves effort for the user.

[0021] Further preferably, scale lines are formed on the knob, so that the speed of the guide wire can be controlled and stepless speed regulation can be achieved.

[0022] Preferably, the injection mechanism is mounted on the handle, and the axis of the injection mechanism is parallel to the axis of the handle, so that the propulsion mechanism drives the injection mechanism to perform injection, and single-handed operation can also be achieved.

[0023] Preferably, the kit further comprises a catheter whose distal end is interference fit with the proximal end of the sheath and can slide in cooperation to retract or extend the guide wire from the sheath, the injection mechanism is connected to the catheter, the guide wire is passed through the sheath and the catheter and the proximal end extends out of the catheter, when in use, the guide wire and the sheath are inserted into the blood vessel together, and then the sheath is moved proximally so that the distal end of the guide wire extends out of the sheath so that the guide wire rotates to cause mechanical damage to the inner wall of the blood vessel, and after use, the sheath is moved distally so that the guide wire is retracted in the sheath to prevent the guide wire from causing damage to the blood vessel when withdrawn from the blood vessel.

[0024] Further preferably, the connection portion between the sheath and the catheter is tapered and the diameter gradually increases from the distal end to the proximal end, thereby ensuring the sealing between the sheath and the catheter, thereby avoiding leakage of the hardener when injecting the hardener.

[0025] Further preferably, the injection mechanism includes a three-way valve, a hose respectively connected to one end of the three-way valve and the catheter, and a syringe connected to the three-way valve, and the push rod of the syringe is detachably connected to the propulsion mechanism.

[0026] More preferably, the three-way valve is fixedly installed above the sleeve box.

[0027] Preferably, the vascular treatment device also includes a connecting mechanism for connecting the driving mechanism and the guide wire, the connecting mechanism includes a first connecting member slidably connected to the sleeve and forming a accommodating portion, a second connecting member fixedly connected to the proximal end of the guide wire, a third connecting member installed on the driving mechanism and capable of being detachably connected to the second connecting member, and an elastic member arranged between the sleeve and the first connecting member; when the sleeve is separated from the handle, the second connecting member is located in the accommodating portion of the first connecting member; when the sleeve is connected to the handle, the second connecting member is separated from the first connecting member, and the second connecting member is connected to the third connecting member.

[0028] Further preferably, a protrusion capable of separating the first connecting member from the second connecting member is formed on the handle.

[0029] Further preferably, the first connecting member includes a connecting body formed with the accommodating portion, and top blocks formed at the upper and lower ends of the connecting body and extending toward the proximal end, and the two ends of the elastic member are respectively abutted against the sleeve and the distal end surface of the connecting body; the protrusion includes two correspondingly arranged with the top block, and when the sleeve is connected to the handle, the protrusion contacts the top block. This embodiment can well drive the second connecting member to separate from the first connecting member when the sleeve is installed on the handle.

[0030] Preferably, the length of the guide wire extending out of the sheath is 5 to 20 mm.

[0031] Preferably, the distal end of the guide wire has a bending portion, and the bending angle of the bending portion is 30 to 60°.

[0032] Further preferably, the bending portion is formed at a distance of 4 to 8 mm from the distal end of the guide wire.

[0033] Preferably, the surface of the sheath has 30 to 50 scale values ​​along the length direction, and the distance between two adjacent scale values ​​is 1 cm.

[0034] Preferably, the sleeve and the handle are fixed by snap connection.

[0035] Preferably, the handle comprises a battery cover which can be blocked at the opening of a battery cavity for accommodating a battery, and a slot is formed on the sleeve for inserting the upper end of the battery cover.

[0036] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0037] The present invention can provide a controllable and accurate injection dose through the propulsion mechanism, so that when the injection is too much, it will not be difficult to operate the propulsion of the injection. In addition, the device can slowly inject and control the injection speed, which can reduce the occurrence of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a vascular treatment device according to an embodiment is shown (the kit is not installed on the handle);

[0039] Figure 2 A longitudinal cross-sectional view of a vascular treatment device according to one embodiment is shown;

[0040] Figure 3 A longitudinal cross-sectional view of a handle of one embodiment is shown;

[0041] Figure 4 A longitudinal cross-sectional view of a kit according to an embodiment is shown (wherein the first connector and the second connector are in a separated state);

[0042] Figure 5 Shows Figure 4 A schematic diagram of the structure of the connection between the sleeve and the injection mechanism shown;

[0043] Figure 6 A schematic structural diagram of a propulsion mechanism according to an embodiment is shown;

[0044] Figure 7 An assembly implementation of a handle housing of one embodiment is shown;

[0045] Figure 8 An assembly implementation scheme of a kit housing is shown;

[0046] Fig. 9 A right side view of a kit of one embodiment is shown;

[0047] Fig.10 A right side view of a handle of one embodiment is shown;

[0048] Fig.11 The scale values ​​on the surface of the sheath body are shown;

[0049] Fig.12 A schematic diagram of the structure of a sheath and a catheter according to an embodiment is shown;

[0050] Figures 13 to 30 Shown are schematic structural diagrams of guidewire heads of various embodiments;

[0051] In the above attached figure:

[0052] 1. Kit; 2. Syringe; 3. Propelling mechanism; 4. Handle; 5. Through hole; 6. Power source slot; 7. Power source; 8 / 21. Screw hole; 9. Third connecting piece; 10. Battery cover; 11. Power source; 13. Button; 14. Trigger; 12 / 15 / 16 / 19. Wire; 17. Controller; 18. Knob; 20. Sheath; 22. Hose; 23. Three-way valve; 24. Top block; 25. Second connecting piece Connector; 26, first connecting member; 27, elastic member; 28, guide wire; 30, cylinder; 31, push rod; 32, buckle; 33, supporting body; 34, roller; 35, gear; 36, rack; 29 / 37 / 38, slot; 39, catheter; 40, box shell; 41, handle shell; 42, slide groove; 43, accommodating part; 44, connecting body; 45, bump; 46, boss; 47, connecting part. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0054] like Figures 1 to 3 as well as Figure 7 The vascular treatment device shown in the figure comprises a handle 4, which comprises a handle housing 41, a driving mechanism, etc. Figure 7 As shown, the handle housing 41 is a two-part, separate halves that are connected and fixed by self-tapping, for example, Figure 3 The screw holes 8 shown in the figure realize the fixed connection of the handle housing 41. Figure 2 and Figure 3 As shown, the driving mechanism includes a power source 7, a controller 17, a power source 11, a button 13, a trigger 14, a knob 18, and the like.

[0055] like Figure 3As shown, a power source slot 6 is formed at the upper position of the proximal end of the handle housing 41. The power source slot 6 can make the power source 7 fit tightly and be fixed in the handle housing 41, so that the power source 7 can be well fixed, and then the power source 7 can run stably and reduce noise. In this embodiment, the power source 7 is an electric motor. The controller 17 is installed at the lower proximal end of the handle housing 41, approximately located at the gripping part of the handle 4, and the controller 17 is connected to the power source 7 through a wire 15; in this embodiment, the controller 17 includes a PCB board, on which a single-chip microcomputer is installed, and the program burned inside the single-chip microcomputer can control the speed of the motor and the reset program of the motor in the power-on state. The power supply 11 is installed at the lower distal end of the handle housing 41. In this embodiment, the power supply 11 is a dry battery, and the power supply 11 is connected to the controller 17 through a wire 12. In this embodiment, two dry batteries are required to power the motor. The trigger member 14 is installed at the proximal end of the handle housing 41, and the trigger member 14 is connected to the controller 17 through a wire 16. The button 13 is mounted on the handle housing 41 and partially extends out of the handle housing 41. The position of the button 13 corresponds to the position of the trigger member 14. By pressing the button 13, the trigger member 14 can be triggered to switch the power source 7 between the energized and non-energized states. When the power source 7 is energized, that is, the power source 7 is electrically connected to the battery and can be powered by the battery. When the power source 7 is not energized, that is, the power source 7 is disconnected from the battery. The knob 18 is mounted on the proximal bottom of the handle housing 41, that is, the bottom of the grip portion and partially extends out of the handle housing 41 for easy operation. The knob 18 is connected to the controller 17 through an electric wire 19. The knob 18 can be steplessly adjusted to control the motor speed. It also has a switch function to prevent misoperation. A scale line is formed on the knob 18, so that the motor speed can be more accurately controlled, thereby controlling the speed of the guide wire 28.

[0056] like Figure 1 , 2 As shown in , 4, 5 and 8, the kit 1 includes a guide wire 28, a sheath 20, a catheter 39, an injection mechanism, etc. Figure 8 As shown, the kit 1 includes a kit housing 40, which is composed of two separate halves connected and fixed by self-tapping, for example, Figure 4 The screw holes 21 shown in the figure realize the fixed connection of the box housing 40. Figure 2 and Figure 4As shown, the guide wire 28 and the power source 7 are detachably connected through a connecting mechanism; the connecting mechanism includes a first connecting member 26, a second connecting member 25, a third connecting member 9 and an elastic member 27. A slide groove 42 is formed at the upper and lower sides of the proximal end of the sleeve housing 40, and the first connecting member 26 is slidably arranged in the slide groove 42 so as to be slidably connected with the sleeve 1. The first connecting member 26 includes a connecting body 44 formed with a receiving portion 43, and a top block 24 formed at the upper and lower ends of the connecting body 44 and extending toward the proximal end, and the top block 24 is arranged in the slide groove 42. An elastic member 27 is arranged in each slide groove 42. In this embodiment, the elastic member 27 is a spring, and the two ends of the elastic member 27 are respectively set against the distal end surface of the slide groove 42 of the sleeve 1 and the distal end surface of the connecting body 44. Two protrusions 45 corresponding to the two top blocks 24 are formed on the handle housing 41. When the sleeve 1 is connected to the handle 4, the protrusions 45 contact the top blocks 24 to push the first connecting member 26 to slide toward the distal end, so that the second connecting member 25 is disengaged from the accommodating portion 43 of the first connecting member 26.

[0057] The distal end of the second connecting member 25 is fixedly connected to the proximal end of the guide wire 28, and the third connecting member 9 is fixedly mounted on the output shaft of the motor. The second connecting member 25 and the third connecting member 9 are detachably connected. When the sleeve 1 is mounted on the handle 4, the second connecting member 25 is separated from the first connecting member 26 and is fixedly connected to the third connecting member 9, wherein the second connecting member 25 and the third connecting member 9 are fixedly connected by snapping, so that the guide wire 28 can be driven to rotate around its own axis when the motor is started; when the sleeve 1 is separated from the handle 4, the second connecting member 25 is located in the accommodating portion 43 of the first connecting member 26, so that the guide wire 28 can be limited and fixed before it cooperates with the handle 4, so that the guide wire 28 cannot rotate.

[0058] like Figure 4 As shown, the catheter 39 is fixedly connected to the housing 40, the proximal end of the sheath 20 and the distal end of the catheter 39 are interference fit and can slide relative to each other so that the guide wire 28 is retracted or extended from the sheath 20; the connecting portion 47 of the sheath 20 and the catheter 39 is tapered and the diameter gradually increases from the distal end to the proximal end, as shown in FIG. Fig.12As shown, the sealing between the sheath 20 and the catheter 39 can be ensured. Before the operation, the guide wire 28 is retracted in the sheath 20, that is, the distal end of the guide wire 28 does not extend out of the sheath 20, so that when the sheath 20 is inserted into the blood vessel, the guide wire 28 will not cause damage to the blood vessel; when the sheath 20 is inserted into the desired position, the sheath 20 is moved proximally to make the guide wire 28 extend from the blood vessel. At this time, the knob 18 is adjusted to the desired speed, and the button 13 is pressed to trigger the trigger member 14 so that the battery supplies power to the motor. The motor rotates at the speed set by the knob 18 under the control of the controller 17 to drive the guide wire 28 to rotate, so as to cause mechanical damage to the inner wall of the blood vessel, thereby causing spasm of the blood vessel. In this embodiment, the maximum speed of the motor can reach 6000r / min.

[0059] When the sheath 20 moves proximally to the maximum distance, the length of the guide wire 28 extending out of the sheath 20 is 5 to 20 mm, preferably slightly longer than 10 mm.

[0060] In order to enable the guide wire 28 to better damage the inner wall of the blood vessel, the distal end of the guide wire 28 has a bending portion, the bending angle of the bending portion is 30 to 60 degrees, and the bending portion is formed 4 to 8 mm away from the distal end of the guide wire 28. In this embodiment, the shape of the head of the guide wire 28 can be designed into a variety of different shapes as needed, for example, Figures 13 to 16 The guide wire 28 shown has a head that is in the form of a wire with a bending angle; Figures 17 to 19 The guide wire 28 shown has a head in the form of at least one semicircular wire. Figures 20 to 22 The guide wire 28 shown has at least one rhombus-shaped head. When there are multiple rhombus-shaped heads, the multiple rhombus-shaped heads are connected in series. Figures 23 to 25 The guide wire 28 shown in the figure has at least one circular head. When there are multiple circular heads, the multiple circular heads are connected in series. Alternatively, Fig.26 and 27 The arc-shaped wire shown, such as Fig.28 The oval shape shown, Fig.29 The shuttle shape shown, such as Fig.30 The spiral shape shown, etc.

[0061] In order to facilitate medical personnel to intuitively understand the depth of the sheath 20 inserted into the blood vessel, the surface of the sheath 20 has 30 to 50 scale values ​​along the length direction. In this embodiment, there are 25 scale values ​​in total, and the distance between two adjacent scale values ​​is 1 cm. Fig.11 shown.

[0062] like Figure 5As shown, the injection mechanism includes a three-way valve 23 fixedly connected to the upper part of the cartridge housing 40, a hose 22 respectively connected to the distal end of the three-way valve 23 and the catheter 39, and a syringe 2 connected to the proximal end of the three-way valve 23, the hose 22 is a soft tube, the push rod 31 of the syringe 2 is detachably connected to the propulsion mechanism 3, the barrel 30 of the syringe 2 is snap-fitted to the handle housing 41, and the axis of the syringe 2 is parallel to the axis of the handle 4. The guide wire 28 is inserted into the sheath 20 and the catheter 39 and the proximal end thereof protrudes out of the catheter 39. When in use, the guide wire 28 and the sheath 20 are inserted into the blood vessel together, and then the sheath 20 is moved proximally so that the distal end of the guide wire 28 protrudes out of the sheath 20 so that the guide wire 28 can rotate to cause mechanical damage to the inner wall of the blood vessel, and then the sheath 20 is moved distally so that the guide wire 28 is retracted in the sheath 20. While withdrawing the sheath 20, the push rod 31 of the syringe 2 is controlled to move distally by the propulsion mechanism 3, so that the hardener flows into the blood vessel through the three-way valve 23, the hose 22, the catheter 39, and the sheath 20.

[0063] like Figure 1 and Figure 6 As shown, the propulsion mechanism 3 includes a driving member and a transmission assembly connected to the driving member, and the transmission assembly is detachably connected to the injection mechanism. The transmission assembly includes a first mating member and a second mating member, and the first mating member includes an integrated support member and two racks 36; the support member includes a U-shaped support body 33 with an opening facing downward, and a buckle 32 formed at the upper end of the support body 33, and the buckle 32 and the push rod 31 of the syringe 2 are fixed by snapping; the proximal end of the rack 36 is fixedly connected to the bottom of the left and right ends of the support body 33; the left and right sides of the handle housing 41 are respectively formed with bosses 46 of the internal channel, and the two racks 36 are respectively slidably inserted in the bosses 46.

[0064] The second mating part is a gear 35 that can move in coordination with the rack 36. There are two gears 35. One gear 35 is meshed with one rack 36 so that the rack 36 is driven to slide by the rotation of the gear 35. The sliding of the rack 36 drives the push rod 31 of the syringe 2 to move to achieve the injection of the hardener and the control of the injection volume and injection speed.

[0065] The driving member includes a roller 34 having a diameter greater than that of the second matching member and having a concave-convex structure formed on the surface, and two connecting parts 47 respectively fixedly connected to the left and right end surfaces of the roller 34. The connecting part 47 is fixedly connected to the second matching member. A through hole 5 is formed on the handle housing 41. The connecting part 47 is rotatably arranged in the through hole 5 and can rotate around its own axis. The roller 34 and the connecting part 47 form a stepped structure so that the power provided by the thumb pushing the roller 34 is transmitted to the injection mechanism.

[0066] In the present invention, the gear 35 and the rack 36 cooperate to accurately control the injection amount of the injection, which can be controlled by those skilled in the art by designing or selecting the required gear 35 and rack 36. For example, the roller 34 rotates one circle to drive the gear 35 to rotate one circle, and the gear 35 rotates one circle to drive the rack 36 to advance 10 tooth pitches, and the corresponding injection mechanism injects 2ml of hardener. The speed at which the syringe 2 pushes the injection drug is related to the speed at which the push rod 31 advances, that is, the rotation speed of the roller 34, the transmission ratio of the gear 35 and the rack 36, and the modulus. By setting the required modulus of the gear 35 rack 36, the modulus of the rack 36 that passes through one circle can be accurately controlled to control the amount of the syringe 2 to be pushed, so that the drug infusion is more accurate.

[0067] like Figures 1 to 4 , Fig. 9 and Fig.10 As shown, the sleeve 1 and the handle 4 are fixed by snap connection, and the specific structure is as follows: a receiving portion for receiving the sleeve 1 is formed at the upper distal end of the handle shell 41, and the two side walls of the receiving portion of the handle shell 41 and the outer side of the sleeve shell 40 are respectively formed with snap-fitting slots 37 and 38. In order to make the connection between the handle 4 and the sleeve 1 more stable and not easy to fall off, a battery cover 10 that can be blocked at the opening of the battery cavity for receiving the battery is provided at the distal end of the handle shell 41, and the upper end of the battery cover 10 extends to the receiving portion 43 of the handle shell 41. When the sleeve 1 and the handle 4 are connected, the upper end of the battery cover 10 is deeply formed in the snap-fitting slot 29 at the lower part of the sleeve shell 40.

[0068] The method of using the present invention:

[0069] The kit 1 is mounted on the handle 4, the sheath 20 and the guide wire 28 are inserted into the blood vessel together, the sheath 20 is moved proximally to make the guide wire 28 extend distally out of the sheath 20, the knob 18 is adjusted, the button 13 is pressed to trigger the trigger 14, the battery supplies power to the motor, the motor rotates to drive the guide wire 28 to rotate so that the guide wire 28 causes mechanical damage to the inner wall of the blood vessel, thereby causing the blood vessel to spasm, the device as a whole is moved proximally while the driving member is operated to make the syringe 2 push the hardener into the blood vessel to play a role in curing the blood vessel wall, after the guide wire 28 is stopped from rotating and the hardener is injected, the sheath 20 is moved distally to make the guide wire 28 retract into the sheath 20 while the sheath 20 is withdrawn. The device can play a good role in treating patients with varicose veins of the lower limbs.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A vascular treatment device, comprising a handle (4), a sleeve (1) mounted on the handle (4), the handle (4) comprising a driving mechanism, the sleeve (1) comprising a guide wire (28) that can be driven by the driving mechanism, a sheath (20) sleeved on the guide wire (28), and an injection mechanism connected to the sheath (20), characterized in that: The vascular treatment device further comprises a propulsion mechanism (3) connected to the injection mechanism and capable of controlling the injection dose; The propulsion mechanism (3) comprises a driving member and a transmission assembly connected to the driving member, wherein the transmission assembly is connected to the injection mechanism; The transmission assembly comprises a first matching member detachably connected to the injection mechanism, and a second matching member fixedly connected to the driving member and capable of moving in coordination with the first matching member, wherein the first matching member is slidably connected to the handle (4), and the driving member and / or the second matching member are rotatably connected to the handle (4); The first matching member comprises a support member located at the proximal end and detachably connected to the injection mechanism, and two racks (36) respectively connected to the left and right ends of the support member at the proximal end; the second matching member is a gear (35) capable of cooperating with the racks (36) for movement; the two racks (36) are respectively slidably connected to the left and right sides of the handle (4); The support member comprises a U-shaped support body (33) with an opening facing downward, a buckle (32) formed at the upper end of the support body (33), the rack (36) is fixedly connected to the lower end of the support body (33), and the buckle (32) is detachably connected to the injection mechanism; The driving member comprises a roller (34) having a diameter greater than that of the second matching member and a concave-convex structure formed on the surface; The driving member comprises connecting parts (47) located on the left and right sides, the second matching parts comprise two connecting parts located on the left and right sides, the second matching parts on each side are respectively fixedly connected to the connecting parts (47), and the handle (4) is formed with a through hole (5) for the connecting part (47) to pass through and allowing the connecting part (47) to rotate around its own axis. The driving mechanism comprises a power source (7) arranged above the proximal end of the handle (4), a controller (17) electrically connected to the power source (7), a power source (11) electrically connected to the controller (17), a button (13) mounted on the handle (4), a trigger member (14) electrically connected to the controller (17) and capable of being triggered by the button (13), and a knob (18) electrically connected to the controller (17) and located below the proximal end of the handle (4).

2. The vascular treatment device according to claim 1, characterized in that: The controller (17) is located at the proximal end of the handle (4), the power source (11) is a dry cell, and the power source (11) is located below the distal end of the handle (4).

3. The vascular treatment device according to claim 1, characterized in that: The injection mechanism is mounted on the handle (4), and the axis of the injection mechanism is parallel to the axis of the handle (4).

4. The vascular treatment device according to claim 1, characterized in that: The kit (1) further comprises a catheter (39) whose distal end is interference-fitted with the proximal end of the sheath (20) and can slide in cooperation with each other so that the guide wire (28) can be retracted or extended out of the sheath (20); the injection mechanism is connected to the catheter (39); the guide wire (28) is inserted into the sheath (20) and the catheter (39) and the proximal end extends out of the catheter (39).

5. The vascular treatment device according to claim 4, characterized in that: The connecting portion (47) between the sheath (20) and the catheter (39) is tapered and its diameter gradually increases from the distal end to the proximal end.

6. The vascular treatment device according to claim 4, characterized in that: The injection mechanism comprises a three-way valve (23), a hose (22) respectively connected to one end of the three-way valve (23) and the catheter (39), and a syringe (2) connected to the three-way valve (23); a push rod (31) of the syringe (2) is detachably connected to the propulsion mechanism (3).

7. The vascular treatment device according to claim 1, characterized in that: The vascular treatment device further comprises a connecting mechanism for connecting the driving mechanism and the guide wire (28), wherein the connecting mechanism comprises a first connecting member (26) slidably connected to the sleeve (1) and having a receiving portion (43), a second connecting member (25) fixedly connected to the proximal end of the guide wire (28), a third connecting member (9) mounted on the driving mechanism and capable of being detachably connected to the second connecting member (25), and an elastic member (27) arranged between the sleeve (1) and the first connecting member (26); when the sleeve (1) is separated from the handle (4), the second connecting member (25) is located in the receiving portion (43) of the first connecting member (26); when the sleeve (1) is connected to the handle (4), the second connecting member (25) is separated from the first connecting member (26), and the second connecting member (25) is connected to the third connecting member (9).

8. The vascular treatment device according to claim 7, characterized in that: The handle (4) is provided with a protrusion (45) capable of separating the first connecting member (26) from the second connecting member (25).

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