Integrated balloon basket device for blood vessel thrombus extraction

Abstract

The integrated balloon basket device comprises an outer tube sheath, a shaft hole is formed in the outer tube sheath along the axis, the two ends of the outer tube sheath are arranged in a penetrating mode, a catheter is arranged in the shaft hole of the outer tube sheath in a penetrating mode, a basket is arranged at the top of the catheter, and a handle is arranged at the bottom of the catheter. The handle is used for opening or closing the mesh basket, an air guide cavity is formed in the tube wall of the outer tube sheath, a balloon is arranged on the side, close to the mesh basket, of the outer tube sheath and communicated with the air guide cavity, an air guide tube is arranged on the side, close to the handle, of the outer tube sheath, one end of the air guide tube is communicated with the air guide cavity, and the other end of the air guide tube is communicated with a valve. The thrombus in the blood vessel of a patient can be effectively captured, the air pressure in the balloon can be accurately controlled, the thrombus is effectively extracted, meanwhile, the protection effect on the patient is better, the working steps of medical workers are simplified through the integrated structure, and the operation duration of blood vessel thrombus extraction is shortened.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to an integrated balloon-net-basket device for thrombus removal in blood vessels. Background Art

[0002] Balloon and basket devices are commonly used medical devices for vascular thrombectomy, mainly used to capture and remove blood clots in blood vessels. This device is often used to treat venous thromboembolism (such as deep vein thrombosis or pulmonary embolism) and other vascular obstruction. It usually consists of an inflatable balloon and a metal basket.

[0003] During the operation, the catheter carrying the balloon is first inserted into the vascular lesion area (stenosis area), and then the balloon is inflated to expand the stenosis area, so that the catheter can pass through the stenosis area. Then, the catheter carrying the balloon is withdrawn from the blood vessel, and then the catheter carrying the basket is re-inserted into the vascular lesion area and passes through the expanded stenosis area. Then, the basket is removed from the catheter using a guide wire, and the basket expands after being released. Then, the guide wire drives the basket toward the lesion area to pick up the thrombus. Finally, the basket carrying the thrombus is pulled into the catheter using a guide wire, and the catheter is withdrawn from the blood vessel to complete the thrombus removal.

[0004] However, the above related technologies have the following defects:

[0005] 1. When the balloon is used to expand the diseased area, it is easy for the thrombus to break off and escape. The escape may occur during the replacement of the balloon and the basket. If the escaped thrombus is large, it is easy to cause distal vascular obstruction.

[0006] 2. The thrombectomy in the prior art is usually carried out in two steps. The first step is to first use a catheter carrying a balloon to extend into the narrow area of ​​the blood vessel, expand the narrow area of ​​the blood vessel, so that the catheter can pass through the narrow area, and then withdraw the catheter carrying the balloon from the blood vessel. The second step is to use the catheter carrying the net basket to re-extend into the vascular lesion area and pass through the expanded narrow area. Then, the net basket is removed from the catheter using a guide wire. The net basket expands after being released. Then, the guide wire drives the net basket to move toward the lesion area to pick up the thrombus. That is, placing the balloon and placing the net basket are two steps, one before the other, and the balloon needs to be taken out before placing the net basket, which makes the operation steps of medical staff more complicated. The above two steps need to be performed under image guidance, which brings more discomfort to patients, increases the workload of medical staff, and prolongs the operation time of vascular thrombectomy. Utility Model Content

[0007] In order to solve the above technical problems, the purpose of the present application is to provide an integrated balloon basket device for vascular thrombus removal, comprising an outer sheath, wherein the outer sheath is provided with an axial hole along the axial center line, and the two ends of the outer sheath are penetrated, a catheter is passed through the axial hole of the outer sheath, a basket is provided at the top of the catheter, and a handle is provided at the bottom of the catheter, wherein the handle is used to open or close the basket, an air guide cavity is provided in the tube wall of the outer sheath, a balloon is provided on the side of the outer sheath close to the basket, the balloon is connected to the air guide cavity, and an air guide tube is provided on the side of the outer sheath close to the handle, one end of the air guide tube is connected to the air guide cavity, and the other end is connected to a valve, and the air pressure monitoring box is connected to the air guide tube. The utility model can effectively capture the thrombus in the patient's blood vessel and can accurately control the air pressure in the balloon. While effectively removing the thrombus, the protection effect on the patient is also better. The integrated structure also simplifies the working steps of medical staff and shortens the operation time of vascular thrombus removal.

[0008] The purpose of this application is achieved through the following technical solutions:

[0009] An integrated balloon basket device for thrombus removal in blood vessels, characterized in that: it comprises an outer tube sheath, the outer tube sheath is hollow, an axial hole is opened along the axis line of the outer tube sheath, two ends of the outer tube sheath are penetrated, a catheter is passed through the axial hole of the outer tube sheath, a basket is arranged on the top of the catheter, and a handle is arranged at the bottom of the catheter, and the handle is used to open or close the basket; an air guide cavity is opened in the tube wall of the outer tube sheath, a balloon is arranged on the side of the outer tube sheath close to the basket, the balloon is connected to the air guide cavity, an air guide tube is arranged on the side of the outer tube sheath close to the handle, one end of the air guide tube is connected to the air guide cavity, and the other end is connected to a valve; the air guide tube is connected to a branch tube, the branch tube is connected to an air pressure monitoring box, and an air pressure sensor is arranged inside the air pressure monitoring box.

[0010] Furthermore, a guide wire is passed through the catheter, and a net basket and a handle are respectively connected to both ends of the guide wire; the net basket is composed of a plurality of mesh wires, and the net basket is in a grid shape and an inverted umbrella shape.

[0011] Preferably, a support spring is provided between the basket and the guide wire; the air guide cavity is linear, or annular and is opened on the periphery of the axial hole; the balloon is an inflatable balloon, which can expand and stretch when air is inflated into the balloon.

[0012] In some possible embodiments, the inner cavity of the air pressure monitoring box is divided into an upper chamber and a lower chamber. An air pressure sensor is arranged in the upper chamber of the air pressure monitoring box. The lower chamber of the air pressure monitoring box includes a central cavity and an annular cavity arranged on the periphery of the central cavity. The central cavity of the lower chamber is connected to the upper chamber, the top of the annular cavity is closed, and the bottom is open; the air pressure monitoring box and the branch pipe are detachably connected.

[0013] In some possible embodiments, a connecting pipe is fixedly connected to the top of the branch pipe, the connecting pipe is connected to the central cavity and the upper chamber of the air pressure monitoring box, the depth of the annular cavity is adapted to the length of the connecting pipe, an annular sealing gasket is arranged at the top of the annular cavity, and the bottom of the annular sealing gasket is used to abut against the top of the connecting pipe; an internal thread is opened in the annular cavity, and an external thread is opened on the outer wall of the connecting pipe, the external thread on the connecting pipe is adapted to the internal thread of the annular cavity, so that the air pressure monitoring box can be threadedly screwed on the connecting pipe.

[0014] In some possible embodiments, the outer diameter of the connecting pipe is smaller than the outer diameter of the branch pipe, and the inner wall diameter of the annular cavity is smaller than the inner diameter of the tube cavity of the connecting pipe, so that the inner wall of the annular cavity can extend into the tube hole of the connecting pipe; a mounting hole is provided at the bottom of the air pressure monitoring box in a vertical direction, a sliding rod is provided in the mounting hole for sliding in a vertical direction, a limiting hole is provided at the top of the branch pipe, the limiting hole is used for inserting the bottom of the sliding rod, and a driving member is provided on the air pressure monitoring box, and the driving member is used to drive the sliding rod to move in the mounting hole.

[0015] In some possible embodiments, a ball is rolled and embedded in the bottom of the sliding rod, the diameter of the ball is smaller than the diameter of the sliding rod, a retaining ring is provided at the opening of the mounting hole, the top of the retaining ring abuts the bottom of the sliding rod, and the inner diameter of the retaining ring is larger than the diameter of the ball and smaller than the diameter of the sliding rod, and the diameter of the limiting hole is larger than the diameter of the ball.

[0016] In some possible embodiments, an elastic member is provided in the mounting hole, one end of the elastic member abuts against the top wall of the mounting hole, and the other end abuts against or is fixedly connected to the top of the sliding rod, and the elastic member is used to drive the sliding rod to move downward.

[0017] In some possible embodiments, the driving member includes a paddle and a connecting plate. A strip groove is opened on the side wall of the air pressure monitoring box in the vertical direction. The strip groove is connected to the mounting hole. A connecting plate is slidably arranged in the strip groove. One end of the connecting plate is fixedly connected to the paddle, and the other end is fixedly connected to the sliding rod.

[0018] In some possible embodiments, a plurality of limiting holes are opened on the top of the branch pipe; and anti-slip grooves are provided on the paddle.

[0019] In summary, the technical solution of the embodiment of the present application has at least the following advantages and beneficial effects:

[0020] 1. In actual use, since the balloon and the basket are integrated, the two-step operation of dilating the blood vessel and capturing the thrombus can be achieved through one entry, which simplifies the working steps of medical staff and shortens the operation time of vascular thrombus removal.

[0021] 2. The air pressure sensor in the air pressure monitoring box can monitor the air pressure in the airbag in real time, so that medical staff can have good and accurate control of the air pressure in the airbag. On the premise of good expansion of the blood vessels, it can avoid unnecessary compression of the patient's blood vessels caused by excessive air pressure in the airbag, and better protect the patient while effectively removing the thrombus.

[0022] 3. As the use time increases, the air pressure monitoring box is disassembled, and the air pressure sensor is inspected and maintained to ensure the accuracy and sensitivity of the air pressure sensor. After the inspection is completed, the air pressure monitoring box needs to be reinstalled. At this time, the position of the air pressure monitoring box on the branch pipe can be limited by the ball bearing, thereby effectively improving the structural stability of the air pressure monitoring box after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0024] Figure 2 A cross-sectional view of an outer tube sheath according to an embodiment of the present application;

[0025] Figure 3 A cross-sectional view of an air pressure monitoring box according to an embodiment of the present application;

[0026] Figure 4 Schematic diagram of the structure of the sliding rod according to an embodiment of the present application.

[0027] Icons: 1. Outer sheath; 10. Balloon; 11. Air guide cavity; 12. Air guide tube; 13. Valve; 2. Catheter; 21. Basket; 22. Handle; 3. Branch tube; 31. Air pressure monitoring box; 32. Air pressure sensor; 4. Connecting tube; 41. Annular cavity; 42. Central cavity; 5. Mounting hole; 51. Sliding rod; 52. Limiting hole; 53. Ball; 54. Retaining ring; 55. Elastic part; 6. Driving part; 61. Strip groove; 62. Connecting plate; 63. Anti-slip pattern; 7. Development mark. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] The following reference Figures 1 to 4 This application is described in further detail.

[0030] Reference Figure 1An integrated balloon basket device for thrombus removal from a blood vessel comprises an outer sheath 1, which is hollow and tubular, and has an axial hole along the axis. Both ends of the outer sheath 1 are penetrated, and a catheter 2 is inserted into the axial hole of the outer sheath 1. A basket 21 is arranged at the top of the catheter 2, and a handle 22 is arranged at the bottom of the catheter 2. The handle 22 is used to open or close the basket 21. Specifically, a guide wire is inserted into the catheter 2, and the basket 21 and the handle are respectively connected to the two ends of the guide wire, and the basket 21 is in an inverted umbrella shape. When the handle 22 is pushed forward, the handle 22 can push the basket 21 forward through the guide wire, so that the basket 21 can be stretched outward to capture the thrombus in the blood vessel. When the handle 22 is pulled backward, the handle 22 can retract the basket 21 into the catheter 2 through the guide wire, so that the basket 21 can be closed. An air guide cavity 11 is opened in the tube wall of the outer sheath 1, and a balloon 10 is arranged on the side of the outer sheath 1 close to the basket 21. The balloon 10 is an inflatable balloon. When air is inflated into the balloon 10, the balloon 10 can expand to open the narrow part of the blood vessel. The balloon 10 is connected to the air guide cavity 11, and an air guide tube 12 is arranged on the side of the outer sheath 1 close to the handle 22. One end of the air guide tube 12 is connected to the air guide cavity 11, and the other end of the air guide tube 12 is connected to the valve 13.

[0031] In this embodiment, the air guiding cavity 11 is annular and is opened on the outer periphery of the axial hole. In other embodiments, the air guiding cavity may also be linear as long as it can be connected with the balloon 10.

[0032] Before use, the basket 21 is retracted in the catheter 2, and the balloon 10 is in an uninflated state and attached to the wall of the outer sheath 1. During the thrombectomy, the end of the outer sheath 1 away from the handle 22 is inserted into the patient's blood vessel from the opening of the blood vessel, and the basket 21, the balloon 10 and the part of the outer sheath 1 away from the handle 22 are all extended into the patient's blood vessel, and the balloon 10 is allowed to enter the vicinity of the narrow area in the patient's blood vessel, with the direction of blood flow as the front, so that the balloon 10 is located in the narrow area of ​​the blood vessel or immediately behind the narrow area; the handle 22, the airway 12 and the part of the outer sheath 1 away from the balloon 10 are all placed outside the human body. Then, the basket 21 is pushed out of the catheter 2 through the handle 22. The basket 21 is located in front of the balloon 10. After the balloon 10 is in place, the valve 13 located outside the body is opened to allow the external air source to inflate the balloon 10 through the airway 12, so that the balloon 10 expands to dilate the blood vessel. In the process of using the balloon 10 to dilate the stenotic area of ​​the blood vessel, the stenotic area of ​​the blood vessel may be expanded due to the force and some thrombi may be detached from the blood vessel wall of the stenotic area. These detached thrombi and other thrombi in the patient's blood vessels can be captured by the basket 21 and sent into the catheter 2 by controlling the guide wire and the basket 21 through the handle 22.

[0033] In order to facilitate the manipulation of the basket 21, a support spring (not shown in the figure) is also arranged between the basket 21 and the guide wire, and the support spring enables the basket 21 to perform adaptive activities under the rigid restraint of the distal end of the guide wire to adapt to the tortuous structure of the blood vessel. The rear ends of the balloon 10 and the basket 21 are respectively provided with a developing mark 7 to display the position of the basket 21 and the balloon 10 in the blood vessel, so that the operator can clearly know whether the balloon 10 and the basket 21 have entered the predetermined position in the blood vessel.

[0034] As an embodiment of the present application, the mesh basket 21 is composed of a plurality of mesh wires, and the mesh wire material can be made of nickel-titanium alloy wire, nickel-titanium-platinum alloy wire, cobalt-chromium-nickel alloy wire, platinum-tungsten alloy wire, etc., and can be processed into the mesh basket 21 through multiple processes such as heat treatment, pickling and polishing. Figure 1 As shown, the mesh basket 21 is in a grid shape and an inverted umbrella shape. The mesh basket 21 has a certain elasticity and plasticity and can be opened outwards or folded inwards like an umbrella.

[0035] Reference Figure 1 , 2 The air guide tube 12 is connected with the branch tube 3, and the branch tube 3 is connected with the air pressure monitoring box 31. The inner cavity of the air pressure monitoring box 31 is divided into an upper chamber and a lower chamber. The air pressure sensor 32 is arranged in the upper chamber of the air pressure monitoring box 31. The lower chamber of the air pressure monitoring box 31 includes a central chamber 42 and an annular chamber 41 arranged on the periphery of the central chamber 42. The central chamber 42 of the lower chamber is connected with the upper chamber. The top of the annular chamber 41 is closed and the bottom is open. The air pressure monitoring box 31 is detachably connected to the branch tube 3 through the annular chamber 41.

[0036] As an implementation of the present application, the air pressure sensor 32 is configured as a small wireless device, and the specific model may be BMP280, BME280, MPL3115A2 or SGP40.

[0037] Reference Figure 2 , 3 A connecting pipe 4 is fixedly connected to the top of the branch pipe 3. The connecting pipe 4 is connected to the central cavity 42 and the upper chamber of the air pressure monitoring box 31. The depth of the annular cavity 41 is adapted to the length of the connecting pipe 4. An internal thread is provided in the annular cavity 41, and an external thread is provided on the outer wall of the connecting pipe 4. The external thread on the connecting pipe 4 is adapted to the internal thread of the annular cavity 41, so that the air pressure monitoring box 31 can be screwed on the connecting pipe 4.

[0038] When the air pressure sensor 32 needs to be repaired or replaced, the air pressure monitoring box 31 can be removed from the connecting pipe 44 by rotating the air pressure monitoring box 31. The operation is simple and convenient, and has good practicality.

[0039] As an optional embodiment of the present application, an annular sealing gasket (not shown in the figure) is arranged at the top of the annular cavity 41, and the bottom of the annular sealing gasket is used to abut against the top of the connecting pipe 4. The annular sealing gasket is used to seal the gap between the top of the connecting pipe 4 and the top of the annular cavity 41, which can effectively improve the sealing effect of the air pressure monitoring box 31.

[0040] Reference Figure 3 , 4 The outer diameter of the connecting pipe 4 is smaller than the outer diameter of the branch pipe 3, and the inner wall diameter of the annular cavity 41 is smaller than the inner diameter of the tube cavity of the connecting pipe 4, so that the inner wall of the annular cavity 41 can extend into the tube hole of the connecting pipe 4. A mounting hole 5 is provided on the bottom outer wall of the air pressure monitoring box 31 along the vertical direction, and a sliding rod 51 is slidably provided in the mounting hole 5 along the vertical direction. A limiting hole 52 is provided on the top of the branch pipe 3, and the limiting hole 52 is used for inserting the bottom of the sliding rod 51. A driving member 6 is provided on the air pressure monitoring box 31, and the driving member 6 is used to drive the sliding rod 51 to move up and down in the mounting hole 5.

[0041] Among them, refer to Figure 4 A ball 53 is rollingly embedded at the bottom of the sliding rod 51, and the diameter of the ball 53 is smaller than the diameter of the sliding rod 51. A retaining ring 54 is arranged at the opening of the mounting hole 5, and the top of the retaining ring 54 is used to abut the bottom of the sliding rod 51 to prevent the sliding rod 51 from extending out of the mounting hole 5, and the inner diameter of the retaining ring 54 is larger than the diameter of the ball 53 and smaller than the diameter of the sliding rod 51, that is, the ball 53 can extend out of the inner hole of the retaining ring 54, but the sliding rod 51 cannot extend out of the inner hole of the retaining ring 54, and the diameter of the limiting hole 52 is larger than the diameter of the ball 53, that is, the ball 53 extending out of the retaining ring 54 can enter the limiting hole 52.

[0042] Reference Figure 4 An elastic member 55 is provided in the mounting hole 5, and the elastic member 55 is used to drive the sliding rod 51 to move downward. As an embodiment of the present application, the elastic member 55 is configured as a compression spring, one end of the elastic member 55 abuts against the top wall of the mounting hole 5, and the other end abuts against or is fixedly connected to the top of the sliding rod 51.

[0043] After the installation of the air pressure monitoring box 31 is completed, the ball 53 extends out of the mounting hole 5 under the action of the elastic member 55. When the mounting hole 5 coincides with the limiting hole 52, the ball 53 is sunk into the limiting hole 52. At this time, the deflection of the air pressure monitoring box 31 can be limited to a certain extent. Only when the medical staff twists it hard can the ball 53 be driven out of the limiting hole 52. At this time, the air pressure monitoring box 31 can be deflected, thereby locking the position of the air pressure monitoring box 31 and the branch pipe 3, preventing the air pressure monitoring box 3 from being loosened due to accidental contact, thereby further ensuring the air sealing performance of the air pressure monitoring box 3 relative to the connecting pipe 4, and to a certain extent improving the overall practicality of the device.

[0044] Reference Figure 4 As an embodiment of the present application, the driving member 6 includes a paddle and a connecting piece 62. A strip groove 61 is opened on the side wall of the air pressure monitoring box 31 in the vertical direction. The strip groove 61 is connected to the mounting hole 5. A connecting piece 62 is slidably arranged in the strip groove 61. One end of the connecting piece 62 is fixedly connected to the paddle, and the other end is fixedly connected to the sliding rod 51.

[0045] When the ball 53 is deeply sunken into the limiting hole 52, it is difficult for medical staff to drive the ball 53 out of the limiting hole 52 by simple rotation. By pushing the paddle upward, the sliding rod 51 can be driven to move upward, thereby moving the ball 53 away from the limiting hole 52. In addition, before the air pressure monitoring box 31 is screwed on the connecting tube 4 to an effective sealing state, in order to prevent the ball 53 from falling into the limiting hole 52 in advance and affecting the continued screwing of the air pressure monitoring box 31, the paddle should also be pushed upward to prevent the ball 53 from falling into the limiting hole 52 in advance. When the air pressure monitoring box 31 is screwed into place, the pulling of the paddle is released.

[0046] Preferably, a plurality of limiting holes 52 are provided on the top of the branch pipe 3, for example, two or four limiting holes 52 are symmetrically provided, so that when the air pressure monitoring box 31 is screwed to the most suitable position, there are corresponding limiting holes 52 nearby.

[0047] Among them, refer to Figure 3 , 4 The paddle is provided with anti-skid patterns 63, which can improve the friction between the medical staff's hand and the paddle, making it convenient for the staff to drive the paddle to move.

[0048] The implementation principle of an integrated balloon basket device for thrombus removal proposed in the embodiment of the present application is:

[0049] In actual use, since the balloon 10 and the outer sheath 1 are integrated, and the basket 21 is connected to the outer sheath 1 through the catheter 2, the balloon 10 and the basket 21 can be simultaneously entered into the patient's body once. Specifically, before use, the basket 21 is contracted in the catheter 2, and the balloon 10 is in an uninflated state and attached to the wall of the outer sheath 1. When performing a thrombectomy, the end of the outer sheath 1 away from the handle 22 is inserted into the patient's blood vessel from the opening of the patient's blood vessel, and the basket 21, the balloon 10, and the part of the outer sheath 1 away from the handle 22 are all extended into the patient's blood vessel, and the balloon 10 is allowed to enter the vicinity of the narrow area in the patient's blood vessel, with the direction of blood flow as the front, so that the balloon 10 is located in the narrow area of ​​the blood vessel or immediately behind the narrow area; the handle 22, the airway 12, and the part of the outer sheath 1 away from the balloon 10 are all placed outside the human body. Then, the basket 21 is pushed out of the catheter 2 through the handle 22. The basket 21 is located in front of the balloon 10. After the balloon 10 is in place, the valve 13 located outside the body is opened to allow the external air source to inflate the balloon 10 through the airway 12, so that the balloon 10 expands to dilate the blood vessels. After the air pressure reaches the set value, the inflation is stopped and the valve 13 is closed. In the process of using the balloon 10 to dilate the stenotic area of ​​the blood vessel, the stenotic area of ​​the blood vessel may detach from the blood vessel wall of the stenotic area due to the force expansion. The guide wire and the basket 21 are controlled by the handle 22 to capture the thrombus detached from the blood vessel wall and other thrombi originally existing in the blood vessel. In this process, the air pressure of the balloon 10 is monitored by the air pressure sensor 32, so as to improve the protection effect on the patient. After the thrombus is captured, the valve 13 located outside the body can be opened to extract the air in the balloon 10 to shrink the balloon 10, and the basket 21 captured by the handle 22 is controlled to retract the basket 21 into the catheter 2, and then the balloon 10 and the basket 21 are taken away from the patient's body. The utility model can effectively capture the thrombus in the patient's blood vessel and can accurately control the air pressure in the balloon 10. While effectively removing the thrombus, the protection effect on the patient is also better. The integrated structure also simplifies the working steps of medical staff and shortens the operation time of thrombus removal.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated balloon basket device for thrombus removal, characterized in that: It includes an outer tube sheath, which is hollow and has an axial hole along the axis. Both ends of the outer tube sheath are penetrated, a catheter is passed through the axial hole of the outer tube sheath, a net basket is arranged on the top of the catheter, and a handle is arranged at the bottom of the catheter, and the handle is used to open or close the net basket; an air guide cavity is opened in the tube wall of the outer tube sheath, a balloon is arranged on the side of the outer tube sheath close to the net basket, and the balloon is connected to the air guide cavity; an air guide tube is arranged on the side of the outer tube sheath close to the handle, one end of the air guide tube is connected to the air guide cavity, and the other end is connected to a valve; the air guide tube is connected to a branch tube, and the branch tube is connected to an air pressure monitoring box, and an air pressure sensor is arranged inside the air pressure monitoring box.

2. The integrated balloon basket device for thrombus removal according to claim 1, characterized in that: A guide wire is passed through the catheter, and a net basket and a handle are respectively connected to the two ends of the guide wire; the net basket is composed of a plurality of mesh wires, and is in a grid shape and an inverted umbrella shape.

3. The integrated balloon basket device for thrombus removal according to claim 2, characterized in that: A supporting spring is also arranged between the net basket and the guide wire; the air guide cavity is linear, or annular and is opened on the periphery of the shaft hole; the balloon is an inflatable balloon, which can expand and stretch when air is inflated into the balloon.

4. The integrated balloon basket device for thrombus removal according to claim 1, characterized in that: The inner cavity of the air pressure monitoring box is divided into an upper chamber and a lower chamber. An air pressure sensor is arranged in the upper chamber of the air pressure monitoring box. The lower chamber of the air pressure monitoring box includes a central cavity and an annular cavity arranged on the periphery of the central cavity. The central cavity of the lower chamber is connected to the upper chamber, the top of the annular cavity is closed and the bottom is open; the air pressure monitoring box and the branch pipe are detachably connected.

5. The integrated balloon basket device for thrombus removal according to claim 4, characterized in that: A connecting pipe is fixedly connected to the top of the branch pipe, and the connecting pipe is connected to the central cavity and the upper chamber of the air pressure monitoring box. The depth of the annular cavity is matched with the length of the connecting pipe. An annular sealing gasket is arranged on the top of the annular cavity, and the bottom of the annular sealing gasket is used to abut against the top of the connecting pipe; an internal thread is opened in the annular cavity, and an external thread is opened on the outer wall of the connecting pipe. The external thread on the connecting pipe is matched with the internal thread of the annular cavity, so that the air pressure monitoring box can be screwed on the connecting pipe.

6. The integrated balloon basket device for thrombus removal according to claim 5, characterized in that: The outer diameter of the connecting pipe is smaller than the outer diameter of the branch pipe, and the inner wall diameter of the annular cavity is smaller than the inner diameter of the tube cavity of the connecting pipe, so that the inner wall of the annular cavity can extend into the tube hole of the connecting pipe; a mounting hole is provided at the bottom of the air pressure monitoring box in the vertical direction, a sliding rod is provided in the mounting hole for sliding in the vertical direction, a limiting hole is provided at the top of the branch pipe, the limiting hole is used for inserting the bottom of the sliding rod, and a driving member is provided on the air pressure monitoring box, and the driving member is used to drive the sliding rod to move in the mounting hole.

7. The integrated balloon basket device for thrombus removal according to claim 6, characterized in that: A ball is rolled and embedded in the bottom of the sliding rod, and the diameter of the ball is smaller than the diameter of the sliding rod. A retaining ring is arranged at the opening of the mounting hole, and the top of the retaining ring abuts against the bottom of the sliding rod, and the inner diameter of the retaining ring is larger than the diameter of the ball and smaller than the diameter of the sliding rod, and the diameter of the limiting hole is larger than the diameter of the ball.

8. The integrated balloon basket device for thrombus removal according to claim 7, characterized in that: An elastic member is arranged in the mounting hole, one end of the elastic member abuts against the top wall of the mounting hole, and the other end abuts against or is fixedly connected to the top of the sliding rod. The elastic member is used to drive the sliding rod to move downward.

9. An integrated balloon basket device for thrombus removal according to any one of claims 6 to 8, characterized in that: The driving member includes a paddle and a connecting piece. A strip groove is opened on the side wall of the air pressure monitoring box in the vertical direction. The strip groove is connected to the mounting hole. A connecting piece is slidably arranged in the strip groove. One end of the connecting piece is fixedly connected to the paddle, and the other end is fixedly connected to the sliding rod.

10. The integrated balloon basket device for thrombus removal according to claim 9, characterized in that: A plurality of limiting holes are provided on the top of the branch pipe; and anti-slip grooves are provided on the pick.

Images