Lower limb varicose vein closing system

Abstract

The invention discloses a lower limb varicose vein closure system, which belongs to the field of medical instruments and comprises a first tube body, the first tube body is divided into an imbedding section and a glue injection section, the end part of the imbedding section of the first tube body is closed, and a glue outlet hole penetrating through the inner and outer side wall surfaces of the imbedding section is formed in the side wall surface of the imbedding section; the second pipe body is used for containing a guide wire, the third pipe body is provided with a metal mark, and the glue injection equipment is correspondingly arranged; the periphery of the pipe body is sleeved with two bag bodies which are arranged at intervals in the axial direction of the pipe body, and the glue outlet hole is located between the two bag bodies in the axial direction. According to the invention, the glue outlet hole is aligned with the affected part, and the blood flow of the affected part is blocked through the expansion of the two bag bodies, so that the closure glue is only subjected to coagulation reaction at the affected part and does not flow to other places along with the blood, and the ultrasonic monitor is configured to position the affected part, monitor the blood flow condition and monitor the closure condition of varicose veins, so that the operation is simple and convenient. The safety is ensured and the treatment efficiency is also improved.

Description

Technical Field

[0001] The invention belongs to the field of medical devices for varicose veins of lower limbs, and in particular relates to a varicose vein closure system for lower limbs. Background Art

[0002] Varicose veins of the lower extremities are one of the most common surgical diseases. The main treatments for varicose veins of the lower extremities include lifestyle changes, wearing elastic stockings, drug therapy, and surgical treatment. Among them, surgical treatment, as the most important treatment method at present, mainly includes high ligation and stripping. Traditional surgery can treat the diseased saphenous vein trunk, but the surgery causes large damage, scars, affects the appearance, and has a high recurrence rate. In other methods, such as foam sclerotherapy, repeated injections are sometimes required for treatment. At the same time, it has poor efficacy for thick varicose veins, high recurrence rate, and often secondary thrombophlebitis, causing local pain in patients; and heat treatment methods such as intracavitary laser therapy and radiofrequency therapy require expensive special equipment, which needs to be performed under general anesthesia during treatment, and heat energy can easily cause damage to the skin and saphenous nerve. Before treatment, puncture and placement of blood vessels require a straight venous vascular access, which has poor treatment effects on thinner or tortuous varicose veins.

[0003] Therefore, a new treatment method that uses biological glue or tissue glue to close varicose veins in the lower extremities has been proposed. The adhesive bonding treatment method does not require general anesthesia and will not produce heat energy to damage normal tissues. It can achieve the same therapeutic effect as intracavitary laser therapy and radiofrequency therapy, and reduce thermal damage to surrounding normal tissues. In the prior art, the sealing glue is used as a fluid, and the current devices are basically able to deliver the sealing glue to the designated position in a simple, continuous, uniform and stable manner. However, how to control the sealing glue to maintain its effect on the local diseased veins and prevent the glue from drifting with the venous blood flow to other normal veins or even deep veins to cause adverse reactions is a problem that needs to be studied by the varicose vein sealing instruments that use sealing glue. At present, in treatment, the operator often manually squeezes the ultrasonic probe and then quantitatively pushes the sealing glue, that is, a certain amount of glue is pushed into the diseased blood vessel through a rubber tube, and the ultrasonic probe is used for manual squeezing to keep the sealing glue reacting with the local diseased blood vessel to seal the blood vessel. This method relies on the force generated by the surgeon's hand pressing the probe to locally seal the diseased blood vessel, and lacks a controllable device to complete the local blood vessel sealing and evaluate the effect. When the force of the pressure probe is not appropriate, the sealing glue may not be confined, causing the sealing glue to flow with the blood to the distant normal veins or even the deep veins of the lower limbs and react with the normal vascular endothelium, potentially causing complications such as deep vein thrombosis.

[0004] Therefore, there is an urgent need for a closure device that can accurately and stably deliver the closure glue to a designated location and confine it to the location to close the varicose vein. Summary of the invention

[0005] In response to one or more of the above-mentioned defects or improvement needs in the prior art, the present invention provides a varicose vein closure system for lower limbs, in which the venous blood vessels are blocked so that the blood flow in the affected area is no longer circulated, so that the closing glue released there will not flow to other places with the blood, but will stably coagulate at the affected area to achieve varicose vein closure.

[0006] To achieve the above-mentioned object, the present invention provides a closure system for varicose veins of lower extremities, which comprises an injection device and a blocking device. The injection device comprises a first tube body and a glue injection device, wherein the first tube body comprises an insertion section and a glue injection section, the end of the insertion section of the first tube body is closed, a glue outlet hole penetrating the inner and outer wall surfaces of the insertion section is provided on the side wall surface, and the end of the glue injection end is connected to the glue injection device, so that the glue enters the first tube body from the glue injection device and is then released into the blood vessel from the glue outlet hole; The blocking device comprises two capsules spaced apart along the axial direction of the first tube, two controllers and two conduits for connecting the capsules and the controllers are respectively arranged corresponding to the two capsules. One end of the catheter is connected to the controller, and the other end is connected to the interface of the balloon. The controller can inject an expansion medium into the balloon, or extract the expansion medium from the balloon, to control the expansion or contraction of the balloon, so that the balloon fits with the inner wall of the blood vessel in the expanded state to form a closed space in the blood vessel. The two capsules are respectively sleeved on the outer circumference of the insertion section of the first tube body, and the glue outlet hole is axially located between the first capsule and the second capsule, so that the glue enters the closed space in the blood vessel from the glue outlet hole.

[0007] As a further improvement of the present invention, it further comprises a second tube body, wherein the axis of the second tube body is parallel to the axis of the first tube body. The outer wall surface of the second tube body is in close contact with the outer wall surface of the first tube body, and the first tube body is fixedly connected to the second tube body. The second tube body contains a guide wire, and one end of the second tube body close to the glue injection end of the first tube body is connected to a return blood vessel; The first capsule and the second capsule are sleeved on the outer circumference of the first tube and the second tube.

[0008] As a further improvement of the present invention, it further comprises a third tube body, the third tube body is sleeved on the periphery of the first tube body and the second tube body, and the axis of the third tube body is parallel to the axis of the first tube body. A through hole corresponding to the glue outlet hole is formed on the side wall surface of the third tube body. The first capsule and the second capsule are sleeved on the outer circumference of the third tube.

[0009] As a further improvement of the present invention, a mark is provided on the tube wall of the third tube body, and the mark is a plurality of marks which are arranged at equal distances along the axial direction of the third tube body.

[0010] As a further improvement of the present invention, the first tube body, the second tube body and the third tube body are integrally formed.

[0011] As a further improvement of the present invention, the two catheters are arranged on the outside of the third tube body, and the interface is opened on the end surface of the sac body close to the injection section; or, the two catheters are accommodated in the third tube body, and the interface is opened on the inner wall surface of the sac body adjacent to the third tube body. As a further improvement of the present invention, the balloon is a cylindrical structure; and / or the expansion medium is physiological saline.

[0012] As a further improvement of the present invention, the glue injection device comprises a gun body and a containing unit and a driving unit arranged in the gun body; The accommodating unit includes a container for accommodating glue liquid, an injection port is provided at one end of the container close to the first tube body, the injection port is connected to the end of the glue injection section of the first tube body, a movable part is provided at the end of the container away from the injection port, the movable part can move closer to or away from the injection port to adjust the accommodating space of the container, an opening is provided at the end of the container away from the injection port, so that the side of the movable part away from the injection port is connected to the movable part of the driving unit to adjust the accommodating space of the accommodating unit so that the glue liquid enters the first tube body.

[0013] As a further improvement of the present invention, the accommodating unit and the gun body are detachably connected. The gun body has an end near the first tube body with a mounting hole, the accommodating unit is mounted in the mounting hole, the movable member is arranged at an end of the container near the bottom of the mounting hole, a connecting hole is correspondingly provided at the bottom of the mounting hole, the movable part of the driving unit is passed through the connecting hole, and the movable part is connected to the movable member. The communicating hole is coaxially arranged with the mounting hole, so that when the movable part reciprocates along the axial direction, it drives the movable member to reciprocate.

[0014] As a further improvement of the present invention, an ultrasonic monitor is also included for locating the affected part of varicose veins, monitoring the blood flow and monitoring the closure of varicose veins. The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0015] In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: (1) The lower extremity varicose vein closure system of the present invention has a glue outlet hole on the side wall of the first tube body to release the sealing glue liquid on the side wall of the first tube body. The first tube body is also provided with two capsules spaced apart along its axial direction, and the two capsules are arranged on both sides of the axial direction of the glue outlet hole. The two capsules can expand and contract respectively. When the glue outlet hole moves to the patient's site, the two capsules can expand to block the blood flow in the patient's site, so that the sealing glue only coagulates at the patient's site and does not flow to other places with the blood, thereby ensuring safety and improving treatment efficiency. (2) The lower extremity varicose vein closure system of the present invention has a mark on the third tube body, which is a metal mark that can be detected by an ultrasonic monitor. The metal mark is arranged near the glue outlet hole, so that when the metal mark is detected by the ultrasonic monitor, the position information of the glue outlet hole can be obtained, thereby accurately moving the glue outlet hole to the patient's site; (3) The lower extremity varicose vein closure system of the present invention, by configuring the glue injection device as a glue dispensing gun, can accurately control the amount and rate of release of the sealing glue through a driving unit, thereby improving the closure efficiency of the varicose veins, and the gun body in the glue dispensing gun and the accommodating unit for accommodating the sealing glue are detachably connected, so that the accommodating unit can be directly replaced during use, making the operation process more efficient and quick; (4) The lower extremity varicose vein closure system of the present invention is provided with a controller corresponding to the capsule, and the controller is preferably an injection mechanism, and can inject physiological saline into the capsule to control the expansion or contraction of the capsule. The expansion of the capsule can be stably controlled by injecting a quantitative liquid, and the use of physiological saline can also avoid the adverse consequences that may be caused by the rupture of the capsule; (5) The lower extremity varicose vein closure system of the present invention proposes a lower extremity varicose vein closure method, which also includes an ultrasonic monitor. By working in coordination with the ultrasonic monitor, the glue outlet and the capsule can be stably and accurately moved to the patient's site to perform varicose vein closure. The correspondingly configured ultrasonic monitor can also monitor the blood flow and varicose vein closure in real time to improve the accuracy and efficiency of varicose vein closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of the varicose vein closure system for lower extremities in an embodiment of the present invention; Figure 2 is a schematic structural diagram of an injection device and a blocking device in an embodiment of the present invention; Figure 3 is a schematic structural diagram of the plugging device in an expanded state according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a glue dispensing gun in an embodiment of the present invention; In all the drawings, the same figure marks represent the same technical features, specifically: 1. injection device; 101. third tube body; 102. glue outlet hole; 103. mark; 104. second through hole; 105. return blood vessel; 2. blocking device; 201. first capsule; 202. first catheter; 203. second capsule; 204. second catheter; 205. first controller; 206. second controller; 3. glue gun; 301. gun body; 302. syringe; 303. mounting hole; 304. drive unit; 305. gun handle; 306. button; 307. gun head cap. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] Example: See also Figures 1 to 4 The varicose vein closure system for lower extremities in the preferred embodiment of the present invention includes an injection device and a blocking device. The blocking device is used to block the local venous blood vessels where the affected area exists to block the blood flow, and then the sealing glue is released through the injection device so that the sealing glue can act on the affected area to prevent the sealing glue from flowing to other places with the blood.

[0023] Specifically, the injection device 1 includes a first tube body, one end of which is closed, so that a first chamber for accommodating a closed glue liquid is formed inside the first tube body, and the other end is connected to a glue injection device, so that the glue liquid in the glue injection device enters the first chamber, and the glue outlet hole 102 is arranged on the side wall of the first tube body, and the glue outlet hole 102 is a first through hole that penetrates the inner and outer walls thereof, so that the closed glue in the first chamber can flow out from the glue outlet hole 102 and enter the vein. Further, in actual application, part of the structure in the first tube body will be inserted into the blood vessel, and correspondingly, the part of the first tube body inserted into the blood vessel is the insertion section, and the end of the first tube body located in this section is the closed end, and the other end of the first tube body is the glue injection end, and the part of the first tube body not inserted into the blood vessel corresponds to the glue injection section.

[0024] Furthermore, the blocking device 2 includes two balloons arranged at intervals along the axial direction of the first tube body, namely a first balloon 201 and a second balloon 203. The first balloon 201 and the second balloon 203 are sleeved on the outer periphery of the insertion section of the first tube body, and the two balloons can expand and contract respectively. After the balloons expand, they can fit with the wall of the blood vessel, thereby blocking the circulation of the blood vessel. After the balloons contract, the surface of the balloons is no longer in contact with the wall of the blood vessel, so that the first tube body can move in the blood vessel. The first balloon 201 is arranged away from the injection end, and the glue outlet hole 102 is located between the two balloons in the axial direction of the first tube body. When the first balloon 201 and the second balloon 203 expand, the blood vessel position where the affected part is located can be blocked, so that the blood in the local position of the blood vessel no longer flows, so that when the closing glue is released from the glue outlet hole 102, the closing glue is maintained in the local area, thereby ensuring the sealing effect.

[0025] Furthermore, a second tube body is also provided corresponding to the first tube body, the axis of the second tube body is arranged parallel to the axial direction of the first tube body, the second tube body is arranged parallel to and close to the first tube body, and the second tube body is fixedly connected to the first tube body, and the second tube body is provided with a second through hole 104 that runs through both end faces thereof, and the second through hole 104 accommodates a guide wire, and the end of the second tube body close to the closed end of the first tube body is a guide end, so that the second tube body and the first tube body can enter the blood vessel and move in the blood vessel under the guidance of the guide wire. Further preferably, the end of the second tube body away from the guide end is connected to the return blood vessel 105, so that the return blood vessel 105 is connected to the second through hole 104, and then after the second tube body enters the blood vessel, the air in the second tube body is extracted through the return blood vessel 105, and at the same time, during the air extraction process, the blood in the blood vessel enters the return blood vessel 105, and it can also be confirmed that the two tubes are located in the blood vessel. In addition, the two capsules are respectively sleeved on the periphery of the first tube body and the second tube body.

[0026] Furthermore, the injection device 1 further includes a third tube body 101, which is sleeved on the outer circumference of the first tube body and the second tube body to cover the first tube body and the second tube body, so that the first tube body and the second tube body are accommodated in the third tube body 101, and a third through hole matching the glue outlet hole 102 is correspondingly opened on the side wall surface of the third tube body 101, so that the closed glue in the first tube body can overflow from the third through hole. Further preferably, a mark 103 is set in the side wall of the third tube body 101, and the mark 103 is arranged in a plurality of intervals along the axial direction of the third tube body 101. At the same time, the first capsule 201 and the second capsule 203 are also sleeved on the outer circumference of the third tube body 101.

[0027] In a preferred embodiment, the mark 103 is a metal mark, which is embedded on the outer wall of the third tube 101, or embedded in the tube structure, so that medical staff can identify it through ultrasonic instruments. The material of the metal mark is preferably one of platinum tungsten alloy or iridium tungsten alloy. Further, in the axial direction of the third tube 101, at least two marks 103 are arranged between the end close to the closed end of the first tube and the third through hole, and the two marks 103 are arranged close to the third through hole, so that when the third tube 101 moves in the blood vessel, the position of the third through hole (including the glue outlet hole 102) can be determined. Further preferably, the spacing between two adjacent marks 103 in the axial direction is 3 cm.

[0028] Furthermore, if Figures 1 to 3 As shown in the figure, the first tube body, the second tube body and the third tube body 101 are integrally formed, and the three tube bodies form one tube body, that is, it can be regarded as that the third tube body 101 has two through holes inside, one of which is closed at one end to form a first chamber, and a glue outlet hole 102 is provided corresponding to the first chamber, so that the third tube body 101 can release the closed glue through the glue outlet hole 102, and a second through hole 104 is also provided on the third tube body 101, so that the guide wire can be passed through the second through hole 104, and the second through hole 104 is arranged side by side with the first chamber, and the axes of the two are parallel to each other, and a mark 103 is also provided on the outer wall of the third tube body 101 accordingly.

[0029] Furthermore, the first capsule 201 and the second capsule 203 are also provided with a first controller 205 and a second controller 206 to control the expansion and contraction of the capsule, and two catheters are provided between the two capsules and the two controllers, namely the first catheter 202 and the second catheter 204, to respectively realize the communication between the two capsules and the two controllers. The first capsule 201, the first catheter 202 and the first controller 205 constitute a first blocking mechanism, while the second capsule 203, the second catheter 204 and the second controller 206 constitute a second blocking mechanism. The two blocking mechanisms operate independently to respectively block the axial ends of the blood vessel at the diseased site, thereby realizing blood flow blocking. Further preferably, an interface is provided on the capsule for connecting with one end of the catheter, and the other end of the catheter is connected to the medium inlet and outlet of the controller, so that the controller can inject the expansion medium into the capsule through the catheter, or extract the expansion medium from the capsule, to control the expansion and contraction of the capsule.

[0030] Further, the controller is an injection mechanism, in which physiological saline is contained, and the expansion or contraction of the sac is achieved by injecting the physiological saline in the injection mechanism into the sac or extracting the physiological saline from the sac. Preferably, the corresponding controller is equipped with an electric control device to achieve precise control. Further preferably, the catheter is connected to the injection mechanism through a Luer connector.

[0031] Further, the first conduit 202 and the second conduit 204 are arranged outside the third tube body 101, and the first conduit 202 and the second conduit 204 are respectively in close contact with the outer peripheral wall surface of the third tube body 101, and the axis of the segment of each conduit in contact with the third tube body 101 is parallel to the axis of the third tube body 101, so that the conduit is parallel to the third tube body 101. Further preferably, the two conduits are arranged outside the third tube body, and the interface is opened on the end surface of the capsule close to the injection section, so that the conduit is connected to the interface.

[0032] Furthermore, the catheter can also be arranged inside the third tube body 101, so that the third tube body 101 can cover the two catheters, thereby protecting the catheters, and correspondingly, the interface is opened on the inner wall surface adjacent to the bladder body and the third tube body. Furthermore, the first tube body, the second tube body and the third tube body 101 are integrally formed, and two channels are correspondingly opened in the third tube body 101, which can be used to connect the two bladder bodies sleeved on the outer periphery of the third tube body 101.

[0033] Further, the first capsule 201 and the second capsule 203 are cylindrical structures, and the length direction of the capsule is the same as the length direction of the third tube 101, and the first capsule 201 is arranged close to the end of the third tube 101. Further preferably, the inner wall surface of the capsule is tightly fitted with the outer wall surface of the third tube. Further explained, the implantation section structure of the first tube, the second tube, and the third tube 101 and the first capsule 201 and the second capsule 203 arranged on the periphery thereof will all be implanted in the blood vessel, which are collectively referred to as the implantation portion.

[0034] In a preferred embodiment, the third tube body 101 has a total length of 60 cm and a diameter of 7F (2.33 cm). The material of the capsule is polyethylene, and its outer layer is a hydrophilic coating. The thickness of the capsule is about 30 μm and the length is 5 cm. The main component of the closing glue is n-butyl cyanoacrylate, n-butyl cyanoacrylate or octyl cyanoacrylate.

[0035] Furthermore, the glue injection device is a glue dispensing gun 3, which includes a gun body 301 and a accommodating unit and a driving unit 304 arranged in the gun body 301. The accommodating unit includes an accommodating space opened in the gun body 301 and an opening connected to the glue injection end in the first tube body, which can be used to accommodate the closing glue and inject the closing glue into the first chamber, and the driving unit 304 can adjust the size of the accommodating space to squeeze the closing glue into the first chamber.

[0036] In a preferred embodiment, a second chamber is provided inside the gun body 301. The second chamber is a container in the accommodating unit for loading the sealing glue. A fourth through hole (i.e., the injection port) is provided at one end of the gun body 301 close to the first tube body, which penetrates the inner and outer walls thereof, so as to connect the second chamber with the outside, so that the sealing glue in the second chamber flows out from the fourth through hole. A movable part is provided at the end of the second chamber away from the injection port. The movable part is a plate structure, and its edge is in contact with the inner wall of the second chamber. When the movable part moves toward or away from the injection port, the volume of the accommodating space of the second chamber also decreases or increases. Furthermore, the gun body 301 is also provided with a third chamber for accommodating the driving unit 304. A connecting hole is provided between the second chamber and the third chamber. The movable part in the driving unit 304 is provided in the connecting hole and connected to the end of the movable part away from the injection port, so that the movable part can drive the movable part to move.

[0037] In another preferred embodiment, it is not convenient to clean the closing glue directly in the accommodating space of the gun body 301. Correspondingly, the accommodating unit and the gun body 301 are detachably connected. The accommodating unit is a syringe 302. A mounting hole 303 is provided on one end face of the gun body 301 close to the first tube body. The mounting hole 303 matches the tube body of the syringe 302, so that the syringe 302 can be directly installed in the mounting hole 303. A connecting hole connecting the mounting hole and the third chamber is provided at the bottom of the mounting hole 303. The movable part of the driving unit 304 is connected to the push rod (i.e., the movable part) of the syringe 302. The mounting hole and the connecting hole are coaxially arranged, so that the movable part can drive the push rod to perform axial reciprocating motion to adjust the accommodating space inside the syringe 302. Further preferably, a gun tip cap 307 is provided at one end of the gun body 301 with a mounting hole 303 for fixing the syringe 302. An external thread is provided at the end of the gun body 301 close to the first tube body, and the gun tip cap 307 is provided with an internal thread matching the internal thread, so that the gun tip cap 307 is fixedly connected to the gun body 301.

[0038] Furthermore, the gun body 301 is also provided with a gun handle 305, and a button 306 is provided on the gun handle 305, and the driving unit 304 is activated by the button 306, so that it drives the movable plate to move. Further preferably, the driving unit 304 is built with a power supply and a relay to enable it to move.

[0039] Furthermore, the driving unit 304 can realize precise control of the movement rate and advancement degree of the push rod, thereby realizing precise control of the release rate and release amount of the sealing glue. Further preferably, the button 306 can be replaced by a control panel to input the relevant values ​​of the release rate and release amount to realize quantitative control, so as to improve the closure efficiency of varicose veins.

[0040] Furthermore, a pressure wheel group is configured corresponding to the first tube body, and the glue dispensing gun 3 can first press a part of the closing glue into the first chamber. In actual application, the first tube body can be squeezed by the pressure wheel group to make a small amount of closing glue overflow, thereby releasing the closing glue.

[0041] Furthermore, the lower extremity varicose vein closure system also includes an ultrasonic monitor, which determines whether the capsule has expanded and filled the diseased blood vessel by monitoring whether there is a blood flow signal passing through the gap between the capsule and the blood vessel wall, so as to achieve occlusion of the key position. Further preferably, the corresponding controller is equipped with an electric control device. When the ultrasonic monitor detects that the blood flow signal no longer passes through the gap between the capsule and the blood vessel wall, the signal can be sent to the electric control device, which immediately controls the controller to maintain the expansion state of the capsule. When the ultrasonic monitor detects that the varicose vein is closed, it immediately sends a signal to the electric control device, so that the controller controls the capsule to shrink.

[0042] For further explanation, a method for closing varicose veins of lower extremities is proposed, which is implemented by using a varicose vein closing system of lower extremities, and includes the following steps: S1, moving the first tube to a designated position in the vein of the lower limb so that the affected area is located between the two sacs; S2, controlling the expansion of the two balloons so that the balloon surfaces fit the inner wall of the blood vessel to block the blood flow in the local blood vessel; S3, injecting the sealing glue into the first tube body, and allowing the sealing glue to enter the vein from the glue outlet hole 102; S4, maintaining the current state until the sealing glue solidifies in the local blood vessels to complete the closure of the varicose vein; S5 , controlling the two balloons to contract, and moving the first tube to the next treatment site or removing the first catheter 202 .

[0043] It should be further explained that before step S1, the varicose vein closure system for lower extremities needs to be assembled, which includes the following steps: S01, inserting the syringe 302 containing the sealing glue into the mounting hole 303 of the gun body 301, and rotating the syringe 302 so that its core rod is fixed in the mounting hole 303; S02, rotating and installing the gun head cap 307 on the gun body 301 to complete the assembly of the dispensing gun 3; S03, connecting the injection end of the first tube to the head of the syringe 302 through a Luer connector, so that the syringe 302 is connected to the first chamber; S04. Connect the two catheters and the two controllers respectively through the Luer connector, and connect one end of the second tube to the return blood vessel 105 through the Luer connector to complete the assembly of the lower extremity varicose vein closure system.

[0044] It should be further explained that in step S1, after puncture, a guide wire is first inserted into the blood vessel, and the second tube body is connected to the guide wire, so that the insertion part can smoothly enter the blood vessel under the support and guidance of the guide wire. Furthermore, the air brought into the blood vessel when the catheter is inserted can be extracted through the return blood vessel 105, and the presence of blood in the return blood vessel 105 can be observed to determine that the insertion part has entered the blood vessel. Furthermore, an ultrasonic monitoring method is configured corresponding to the varicose vein closure method of the lower limbs. In step S1, the position of the metal mark 103 is obtained by an ultrasonic monitor, and then the position of the glue hole 102 is identified. At the same time, the position of varicose veins is identified by the ultrasonic monitor, which facilitates medical staff to quickly move the insertion part to the designated position so that the glue hole 102 is aligned with the affected area.

[0045] In steps S2 to S4, the size of the balloon is expanded by controlling the control device to achieve blood vessel occlusion, and an ultrasonic monitoring method is also configured to determine whether the balloon has expanded to fill the diseased blood vessel by monitoring whether there is a blood flow signal passing through the gap between the balloon and the blood vessel wall to achieve occlusion of the key position. Further preferably, the corresponding controller is configured with an electric control device, and when the ultrasonic monitor collects that the blood flow signal no longer passes through the gap between the balloon and the blood vessel wall, the signal can be sent to the electric control device, which immediately controls the controller to maintain the expansion state of the balloon.

[0046] At the same time, the ultrasonic monitor can also monitor the closure of the varicose veins. In step S4, when it is detected that the closure of the varicose veins is complete, the medical staff can shrink the capsule to proceed to the next step.

[0047] Furthermore, in step S3, the sealing glue is released into the blood vessel by pressing the button 306 of the glue dispensing gun 3 or starting the pressure wheel assembly.

[0048] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A varicose vein closure system for lower extremities, characterized in that: Including injection device and blocking device, The injection device comprises a first tube body and a glue injection device, wherein the first tube body comprises an insertion section and a glue injection section, the end of the insertion section of the first tube body is closed, a glue outlet hole penetrating the inner and outer wall surfaces of the insertion section is provided on the side wall surface, and the end of the glue injection section is connected to the glue injection device, so that the glue enters the first tube body from the glue injection device and is then released into the blood vessel from the glue outlet hole; The blocking device comprises two capsules spaced apart along the axial direction of the first tube, two controllers and two conduits for connecting the capsules and the controllers are respectively arranged corresponding to the two capsules. One end of the catheter is connected to the controller, and the other end is connected to the interface of the balloon. The controller can inject an expansion medium into the balloon, or extract the expansion medium from the balloon, to control the expansion or contraction of the balloon, so that the balloon fits with the inner wall of the blood vessel in the expanded state to form a closed space in the blood vessel. The two capsules are respectively sleeved on the outer circumference of the insertion section of the first tube, and the glue outlet hole is axially located between the two capsules, so that the glue enters the closed space in the blood vessel from the glue outlet hole.

2. The varicose vein closure system for lower extremities according to claim 1, wherein: It also includes a second tube body, the axis of the second tube body is parallel to the axis of the first tube body, The outer wall surface of the second tube body is in close contact with the outer wall surface of the first tube body, and the first tube body is fixedly connected to the second tube body. The second tube body contains a guide wire, and one end of the second tube body close to the glue injection end of the first tube body is connected to a return blood vessel; The two capsules are sleeved on the outer circumferences of the first tube and the second tube.

3. The varicose vein closure system for lower extremities according to claim 2, wherein: It also includes a third tube body, which is sleeved on the periphery of the first tube body and the second tube body, and the axis of the third tube body is parallel to the axis of the first tube body. A through hole corresponding to the glue outlet hole is formed on the side wall surface of the third tube body. The two capsules are sleeved on the outer circumferences of the first tube and the second tube.

4. The varicose vein closure system for lower extremities according to claim 3, wherein: The tube wall of the third tube body is provided with a plurality of marks, and the marks are arranged at equal intervals along the axial direction of the third tube body.

5. The varicose vein closure system for lower extremities according to claim 3, wherein: The first tube body, the second tube body and the third tube body are integrally formed.

6. The varicose vein closure system for lower extremities according to any one of claims 3 to 5, wherein: The two conduits are arranged outside the third tube body, and the interface is opened on the end surface of the sac body close to the injection section; or, the two conduits are accommodated in the third tube body, and the interface is opened on the inner wall surface of the sac body adjacent to the third tube body.

7. The varicose vein closure system for lower extremities according to any one of claims 1 to 5, wherein: The balloon is a cylindrical structure; and / or the expansion medium is physiological saline.

8. The varicose vein closure system for lower extremities according to any one of claims 1 to 5, wherein: The glue injection device comprises a gun body, and a containing unit and a driving unit arranged in the gun body; The accommodating unit includes a container for accommodating glue liquid, an injection port is provided at one end of the container close to the first tube body, the injection port is connected to the end of the glue injection section of the first tube body, a movable part is provided at the end of the container away from the injection port, the movable part can move closer to or away from the injection port to adjust the accommodating space of the container, an opening is provided at the end of the container away from the injection port, so that the side of the movable part away from the injection port is connected to the movable part of the driving unit to adjust the accommodating space of the accommodating unit so that the glue liquid enters the first tube body.

9. The varicose vein closure system for lower extremities according to claim 8, wherein: The accommodating unit and the gun body are detachably connected. The gun body has an end near the first tube body with a mounting hole, the accommodating unit is mounted in the mounting hole, the movable member is arranged at an end of the container near the bottom of the mounting hole, a connecting hole is correspondingly provided at the bottom of the mounting hole, the movable part of the driving unit is passed through the connecting hole, and the movable part is connected to the movable member. The communicating hole is coaxially arranged with the mounting hole, so that when the movable part reciprocates along the axial direction, it drives the movable member to reciprocate.

10. The varicose vein closure system for lower extremities according to any one of claims 1 to 5, wherein: It also includes an ultrasound monitor that is used to locate varicose veins, monitor blood flow, and monitor the closure of varicose veins.

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