An adjustable bend suction system

Abstract

This invention discloses an adjustable-bend aspiration system, relating to the field of medical devices. It includes an adjustable tube, a tip, a sealing valve, a sealing valve cover, an extension tube, a catheter clamp, a connector, a collar, a sealing plate, a dilator, and an adjusting device. The adjusting device pulls an adjusting wire to control the bending of the adjustable tube, allowing it to pass smoothly through relatively tortuous blood vessels. This allows it to work in conjunction with the aspiration device to remove thrombi. This invention controls the degree of bending at the tip of the aspiration tube by adjusting the delivery system, which is beneficial for use in tortuous blood vessels and areas difficult for ordinary instruments to pass through. It avoids the risks of surgery and adverse drug reactions, improves the efficiency of mechanical thrombectomy, shortens the operation time, and reduces complications.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to an adjustable bendable suction system. Background Technology

[0002] Embolism refers to the phenomenon where an abnormal substance insoluble in blood appears in the circulating blood and travels to a distant location, obstructing the lumen of a blood vessel. The substance obstructing the blood vessel is called an embolus. Emboli can be solid (such as a thrombus detached from the vessel wall), liquid (such as a fat droplet from a fracture), or gas (such as air entering the bloodstream during a venous injury). Embolism caused by detached thrombi is the most common, such as pulmonary embolism and cerebral artery embolism. The effects of embolism on the body depend on the location of the embolism, the anatomical features of the blood vessel and the state of local blood circulation, whether sufficient collateral circulation can be established after embolism, and the type and source of the embolus. Common types of embolism include thromboembolism, fat embolism, gas embolism, amniotic fluid embolism, tumor cell embolism, parasitic embolism, and septic embolism.

[0003] The most common type of embolism is thromboembolism. The causes, size, and location of thrombus formation can have different effects on the body.

[0004] The most common types of thromboembolism are pulmonary embolism and systemic arterial embolism.

[0005] Most pulmonary emboli originate from deep vein thrombosis in the lower extremities. Generally, if the embolus is small and lung function is intact, it can be dissolved and absorbed or organized into fibrous strands. However, if the embolus is too large or lung function fails, even a small embolus can lead to sudden death in the patient.

[0006] Most systemic arterial embolisms originate from mural thrombi in the left ventricle and arterial system. The primary sites of arterial embolism are the lower extremities and brain, but it can also affect the intestines, kidneys, and spleen. The consequences of embolism depend on the location of the embolism, the availability of collateral circulation, and the tissue's tolerance to ischemia. When the embolized artery lacks effective collateral circulation, it can cause infarction of local tissues.

[0007] Currently, there are many technologies available to remove embolisms and thus restore blood flow to blood vessels.

[0008] The first technique involves surgical removal of blood clots. This technique can remove blood clots in the most direct, thorough, and immediate way. However, this method carries extremely high risks for some blood clots located in critical parts of the body, such as pulmonary artery thrombosis.

[0009] The second method involves thrombolysis with drugs, continuously infusing anticoagulants and thrombolytic drugs into the embolism site. However, the dosage of these drugs must be strictly controlled depending on the patient's physical condition and the severity of the embolism, otherwise adverse consequences such as bleeding may occur.

[0010] The third method involves mechanical thrombectomy. This method effectively removes old thrombi, offering advantages such as high efficiency, short operation time, low risk of distal embolism, and fewer complications. However, mechanical thrombectomy is difficult to apply in some cases where the blood vessels are particularly tortuous, and it is challenging to reach the thrombus site using percutaneous or catheter-based interventional devices.

[0011] Therefore, those skilled in the art are dedicated to developing an adjustable bend suction system, which is particularly suitable for thrombus removal in tortuous blood vessels. Summary of the Invention

[0012] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is that the instrument is difficult to reach the tortuous blood vessels, resulting in difficulties in thrombectomy.

[0013] To achieve the above objectives, the present invention provides an adjustable bending suction system, comprising an adjusting tube, a head end, a sealing valve, a sealing valve cover, an extension tube, a guide clamp, a connector, a collar, a sealing plate, an expander, and an adjusting device. The adjusting tube has an adjusting wire, which is pulled to control the bending of the front end of the adjusting tube. The adjusting device is connected to the adjusting wire and controls the pulling of the adjusting wire. The head end is assembled and connected to the adjusting device to restrict the bending device. The head end is also assembled and locked by the sealing valve to restrict the movement of the head end. The sealing valve restricts the movement of the adjusting device and is assembled with the sealing valve cover to prevent the sealing valve cover from falling off. The sealing strip is located in the cavity inside the sealing valve. When the sealing valve cover is assembled with the sealing valve and the sealing strip, it serves to fix and compress the sealing strip. One end of the extension tube is assembled with the sealing valve, and the other end of the extension tube is assembled with the catheter clamp. The opening and closing of the extension tube is controlled by switching the catheter clamp. The connector connects the catheter clamp and the aspiration device, thereby using the aspiration device to aspirate thrombi. The collar is located between the bending device and the sealing valve, which reduces the contact area and friction. The dilator is located inside the bending tube, penetrating the adjustable bending aspiration system, and serves to support the bending tube, reduce vascular damage, and improve the aspiration system's ability to pass through blood vessels.

[0014] Furthermore, the head end has a symmetrical structure, with a first groove and a first boss on it, which serve as positioning tools during assembly. It also has a second groove, which is used to lock the bending device during assembly, thereby restricting the bending device. The third groove is a groove for placing the bending wire, which protects the bending wire. Finally, the fourth groove is used to lock the head end with the first boss on the sealing valve, thus restricting the head end.

[0015] Furthermore, the sealing valve is a hollow cylinder, having from left to right a first boss, a second boss, a groove, two layers of pagoda heads, a third boss, and threads. The first boss is assembled and connected to the head end to restrict the head end. The second boss and the groove together restrict the bending device. The two layers of pagoda heads are assembled with the extension tube. The third boss cooperates with the sealing valve cover. The threads are used for assembly with the sealing valve cover. The cavity is used to place the sealing sheet. The sealing valve cover has anti-slip texture, a first boss that fixes and squeezes the sealing sheet when assembled with the sealing valve and the sealing sheet, a second boss to prevent the sealing valve from falling off, and threads for assembly with the sealing valve.

[0016] Furthermore, the bending tube is a single-bending tube, the bending device is a knob-type bending device, the bending tube has a bending screw, and the knob-type bending device includes a right bending handle, a left bending handle, and a nut.

[0017] Furthermore, the right and left bending handles are two hollow semi-cylindrical shells that fit together to form a cylindrical handle that wraps around the outside of the sealing valve. The right bending handle has a threaded hole on its inner side, through which it is screwed to the left bending handle. The upper and lower edges of the right bending handle have four first protrusions, which are used to fix and limit the movement of the handle when it is assembled with the left bending handle. The handle also has threads that allow it to be assembled with the nut, enabling it to move forward and backward. Finally, it has second protrusions to reduce the contact area. The device reduces friction; it has a third boss that assembles with a groove on the head end to restrict the right bending handle; the outer side of the right bending handle has anti-slip stripes for anti-slip purposes; the nut has threads and is assembled with the left and right bending handles, rotating the left and right bending handles moves the nut; the nut has a groove that assembles with the sealing valve to restrict the rotation of the nut; the nut has a threaded hole through which the bending screw passes and is tightened with a screw to restrict the bending screw.

[0018] Furthermore, the bending tube is a double bending tube, and the bending device is a knob-type bending device. The double bending tube has a first bending wire and a second bending wire that are symmetrical. By pulling the first bending wire, the head end of the double bending tube can be shifted to the left, and by pulling the second bending wire, the head end of the double bending tube can be shifted to the right. The first bending wire and the second bending wire cannot be pulled at the same time. The knob-type bending device includes a right bending handle, a left bending handle, a counterclockwise nut, a clockwise nut, a fixing block, and a limiting bar.

[0019] Furthermore, the head end has a fifth groove, which is assembled with the limiting bar to restrict the movement of the fixing block; the right bending handle and the left bending handle are two hollow semi-cylindrical shells, which fit together to form a cylindrical handle, covering the outside of the sealing valve; the clockwise nut and the counterclockwise nut are both half nuts, the inner side of the left bending handle has a double thread structure, which is assembled with the counterclockwise nut and the clockwise nut, rotating the handle drives the nut forward or backward, the counterclockwise nut has a counterclockwise thread, is assembled with the left and right bending handles, and moves in the opposite direction to the clockwise nut when the handle is rotated, the clockwise nut has a clockwise thread, is assembled with the handle, and moves in the opposite direction to the counterclockwise nut when the handle is rotated; both the clockwise nut and the counterclockwise nut have grooves, which are assembled with the limiting bar, the clockwise nut and the The clockwise nut has a threaded hole for the first and second adjusting wires to pass through. The clockwise nut and the counterclockwise nut also have holes for the limiting rod to pass through. The fixing block has two parts, upper and lower, each with two holes and two threaded holes. The first and second adjusting wires pass through the upper hole of the fixing block, then bend and pass through the lower hole, and are screwed into the upper and lower threaded holes. The screws and the fixing block press against the first and second adjusting wires, thereby fixing them. The fixing block is located to the right of the clockwise and counterclockwise nuts and moves with them. The sealing valve has a groove that assembles with the fixing block, restricting its movement, and has a hole through which it assembles with the limiting rod.

[0020] Furthermore, one of the fixing blocks is adjusted to the left side of the corresponding clockwise or counterclockwise nut, and the bending screw is fixed to the threaded hole of the corresponding clockwise or counterclockwise nut with a screw. When the left and right bending handles are rotated, the nut moves and drives the bending screw, thereby bending the front end of the bending tube to achieve single bending. Adjusting the position of the fixing block limits the movement range of the clockwise or counterclockwise nut and protects the bending tube.

[0021] Furthermore, the bending tube is a single-bending tube, and the bending device is a button-type bending device. The bending tube has one bending screw. The button-type bending device includes a handle without an opening, a pressing base, a spring, a pressing button, and an open handle. The pressing base has a groove to fix the spring and a hole to fix the bending screw. The pressing button has markings to indicate the angle of the front end of the bending tube, an anti-slip protrusion for anti-slip purposes, and an extension protrusion to cover the interior when the pressing button is moved. The pressing button has two rows of serrations on both sides to lock it when it moves, and a fixing protrusion to fix the spring. The open handle has an opening, which is the movement area of ​​the pressing button. The opening has serrations on both sides that cooperate with the two rows of serrations on the pressing button to lock it. The handle without an opening and the handle without an opening are two hollow shells that cooperate to form a handle, enclosing the internal structure.

[0022] Furthermore, the bending tube is a double bending tube, and the bending device is a button-type bending device. The bending tube has symmetrical first and second bending threads. The button-type bending device includes a left button handle, a right button handle, a fixing block, a limiting rod, a pressing base, a spring, a pressing button, and a self-locking device. The left and right button handles are two hollow shells that cooperate to form a handle, enclosing the internal structure. The left and right button handles have openings, which are the movement areas of the pressing button. The openings have serrations on both sides, which cooperate with the two rows of serrations on the pressing button to lock it. One side of the left and right button handles has a groove and a recess, which are the movement areas of the self-locking device and restrict its movement. The fixing block has upper and lower parts, each with two holes (upper and lower) and two... The first and second adjusting wires pass through the upper hole of the fixing block, then bend and pass through the lower hole of the fixing block, and are screwed into the upper and lower threaded holes. The screws and the fixing block press against the first and second adjusting wires, thereby fixing the first and second adjusting wires. The limiting rod cooperates with the hole on the head end of the double adjusting tube and the sealing valve to restrict the movement of the fixing block. The pressing base has a groove to fix the spring and a hole for fixing the adjusting wire. The pressing key has a scale to indicate the front end angle of the adjusting tube and has an anti-slip protrusion for anti-slip. It also has an extension protrusion to cover the inside when the pressing key is moved. The self-locking device is located between the left and right button handles and the double adjusting sealing valve to prevent accidental operation. The self-locking device has anti-slip texture for anti-slip function.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. By adding a bend adjustment design, the delivery system can be adjusted to control the degree of bend at the tip of the suction tube, so that the bend adjustment tube can pass smoothly through more tortuous blood vessels, and the instrument can better pass through more tortuous blood vessels to reach the thrombus location.

[0025] 2. The knob-type bending system design connects the bending screw to the nut. Turning the bending handle moves the nut, making it easier to adjust the tension of the bending screw and bend the suction tube head, thus reducing the difficulty of operation and improving efficiency.

[0026] 3. The button-type bending device design connects the bending screw to the pressing button. Moving the pressing button makes it easier to adjust the tension of the bending screw, causing the suction tube head to bend, thereby reducing operation time and improving efficiency.

[0027] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0028] Figure 1 This is an overall view of an adjustable bend suction system according to a preferred embodiment of the present invention;

[0029] Figure 2 This is an overall view of a preferred embodiment of the rotary adjustable bending suction system of the present invention;

[0030] Figure 3 This is a schematic diagram of a monotonic bend in a preferred embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the head end of a preferred embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the right-hand adjustment handle of a preferred embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of a sealing valve according to a preferred embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of a sealing valve cover according to a preferred embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of an extension tube and a conduit clamp according to a preferred embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of a connector according to a preferred embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of a nut according to a preferred embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the left-hand adjustment handle of a preferred embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of a collar according to a preferred embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the external structure of a knob-type double-bend suction system according to a preferred embodiment of the present invention;

[0041] Figure 14 This is a schematic diagram of the internal structure of a knob-type double-bend suction system according to a preferred embodiment of the present invention;

[0042] Figure 15 This is a schematic diagram of a double-adjustable bend pipe according to a preferred embodiment of the present invention;

[0043] Figure 16 This is a schematic diagram of the head end of a preferred embodiment of the double-bend suction system of the present invention;

[0044] Figure 17 This is a schematic diagram of the left bending handle of a double-bending suction system according to a preferred embodiment of the present invention;

[0045] Figure 18 This is a schematic diagram of the sealing valve of a double-bend suction system according to a preferred embodiment of the present invention;

[0046] Figure 19 This is a schematic diagram of the counterclockwise nut of the double-adjustable bending suction system of a preferred embodiment of the present invention;

[0047] Figure 20 This is a schematic diagram of the right bending handle of a preferred embodiment of the dual-bending suction system of the present invention;

[0048] Figure 21 This is a schematic diagram of the clockwise nut of the double-adjustable bending suction system according to a preferred embodiment of the present invention;

[0049] Figure 22 This is a schematic diagram of the fixing block of the double-bend suction system according to a preferred embodiment of the present invention;

[0050] Figure 23 This is a schematic diagram of a preferred embodiment of the present invention, showing the double-bend suction system adjusted to a single-bend suction system;

[0051] Figure 24 This is a schematic diagram of a preferred embodiment of the button-type monotonic bending suction system of the present invention;

[0052] Figure 25 This is a schematic diagram of a preferred embodiment of the pressing base of the present invention;

[0053] Figure 26 This is a schematic diagram of a press button according to a preferred embodiment of the present invention;

[0054] Figure 27 This is a schematic diagram of an open handle and a non-open handle according to a preferred embodiment of the present invention;

[0055] Figure 28 This is a schematic diagram of a preferred embodiment of the button-type double-bend suction system of the present invention;

[0056] Figure 29 This is a schematic diagram of the left button handle according to a preferred embodiment of the present invention;

[0057] Figure 30 This is a schematic diagram of a right-button handle according to a preferred embodiment of the present invention;

[0058] Figure 31 This is a schematic diagram of a self-locking device according to a preferred embodiment of the present invention.

[0059] Wherein: 1-Single-adjustable bend; 101-Adjusting screw; 102-Front end of adjusting bend; 2-End of single-adjustable bend; 201-First groove; 202-First boss; 203-Second groove; 204-Third groove; 205-Fourth groove; 3-Right adjusting handle; 301-Threaded hole; 302-First boss; 303-Thread; 304-Second boss; 305-Third boss; 306-Anti-slip stripe; 4-Single-adjustable bend sealing valve; 401-First boss; 402-Second boss; 403-Groove; 404-Two-layer pagoda head; 405-Third boss; 406-Thread; 4 07-Cavity; 5-Sealing valve cover; 501-Anti-slip texture; 502-First boss; 503-Thread; 504-Second boss; 6-Extension tube; 7-Pipe clamp; 8-Connector; 801-Suction device; 9-Nut; 901-Thread; 902-Groove; 903-Threaded hole; 10-Left-adjusting bend handle; 1001-Threaded hole; 1002-First boss; 1003-Thread; 1004-Second boss; 1005-Third boss; 1006-Anti-slip stripe; 11-Ring; 1101-Groove; 1102-Boss; 12-Double-adjusting bend; 1201-First... 1202 - Second adjusting wire; 13 - Left double adjusting handle; 1301 - Double thread structure; 14 - Double adjusting sealing valve; 1401 - Groove; 1402 - Hole; 15 - Counterclockwise nut; 1501 - Counterclockwise thread; 1502 - Groove; 1503 - Threaded hole; 16 - Right double adjusting handle; 1601 - Double thread structure; 17 - Limiting bar; 18 - Clockwise nut; 1801 - Clockwise thread; 1802 - Hole; 1803 - Threaded hole; 19 - Fixing block; 1901 - Hole; 1902 - Threaded hole; 20 - Double adjusting head end; 200 1-Groove; 21-Press base; 2101-Groove; 2102-Hole; 22-Press button; 2201-Scale; 2202-Anti-slip boss; 2203-Extending boss; 2204-Serge; 2205-Fixed boss; 23-Open handle; 2301-Open; 2302-Serge; 24-Handle without opening; 25-Spring; 26-Left button handle; 2601-Groove; 2602-Dent; 27-Self-locking device; 2701-Anti-slip texture; 28-Right button handle; 2801-Groove; 2802-Dent; 29-Sealing plate; 30-Expander. Detailed Implementation

[0060] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0061] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0062] like Figure 1 and Figure 2 The diagram shows the overall layout of the knob-type adjustable bend suction system. The two adjustable bend suction systems include: an adjusting pipe, a head end 2, a sealing valve, a sealing valve cover 5, an extension pipe 6, a guide clamp 7, a connector 8, a collar 11, a sealing plate 29, an expander 30, and an adjusting device.

[0063] Example 1 - Knob-type monotonic bending suction system

[0064] like Figure 3 The diagram shows a monotonic bending tube 1 in a monotonic bending suction system. The monotonic bending tube 1 has a bending wire 101, and the front end 102 of the bending tube is bent by pulling the bending wire 101.

[0065] like Figure 4 As shown, the monotonic elbow end 2 has a symmetrical structure. The monotonic elbow end 2 has a first groove 201 and a first boss 202, which play a positioning role when assembling the monotonic elbow end 2; it has a second groove 203, which, when assembled with the left bending handle 10 and the right bending handle 3, locks the third boss 1005 on the left bending handle 10 and the third boss 305 on the right bending handle 3, thus restricting the bending handles 3 and 10; it has a third groove 204, which is a groove for placing the bending wire 101, and plays a role in protecting the bending wire 101 (protecting the bending wire when rotating the handle and reducing failure); it has a fourth groove 205, which, when assembled with the monotonic bending sealing valve 4, locks the monotonic elbow end 2 through the first boss 401 on the monotonic bending sealing valve 4, thus restricting the monotonic elbow end 2.

[0066] like Figure 5 As shown, the right bending handle 3 has a threaded hole 301, which is fixed to the left bending handle 10 with a screw; it has four first bosses 302, which are assembled with the left bending handle 10 and serve as a fixing and limiting function; it has threads 303, which are assembled with the nut 8 and serve to drive the nut 9 forward and backward; it has second bosses 304, which serve to reduce the contact area and thus reduce friction. It also has anti-slip stripes 306 for anti-slip purposes.

[0067] like Figure 6As shown, the first boss 401 on the monotonic bend sealing valve 4 engages with the monotonic bend end 2, thus limiting the monotonic bend end 2. The monotonic bend sealing valve 4 has a second boss 402, which limits the movement of the nut 9, and works with the groove 403 to limit and fix the bend adjustment handles 3 and 10; it has two layers of pagoda heads 404, which are assembled with the extension tube 6, and the multiple layers of pagoda heads can improve the sealing effect; it has a third boss 405, which engages with the second boss 504 in the sealing valve cover 5 to prevent the sealing valve cover 5 from falling off; it has a thread 406, which is assembled with the sealing valve cover 5; and it has a cavity 407 for placing the sealing plate 29.

[0068] like Figure 7 As shown, the sealing valve cover 5 has anti-slip texture 501, which serves to prevent slipping; it has a first boss 502, which serves to fix and compress the sealing sheet 29 when assembled with the sealing valve 4 and the sealing sheet 29; and it has a thread 503, which is used for assembly with the monotonic bend sealing valve 4.

[0069] like Figure 8 As shown, the extension tube 6 is assembled with the conduit clamp 7, and the opening and closing of the extension tube 6 is controlled by switching the conduit clamp 7.

[0070] like Figure 9 As shown, connector 8 can be connected to the equipped suction device 801 to aspirate thrombi using the suction device.

[0071] like Figure 10 As shown, nut 9 has a thread 901, which is assembled with bending handles 3 and 10. Turning the handle will drive nut 9 to move. It has a groove 902, which is assembled with single bending sealing valve 4, which restricts the rotation of nut 9. It has a threaded hole 903, through which bending screw 101 passes and is tightened with a screw, which restricts bending screw 101.

[0072] like Figure 11 As shown, the left turning handle 10 has the same function as the right turning handle 3.

[0073] like Figure 12 As shown, the collar 11 has a symmetrical structure and an overall rhomboid cross-section, which reduces the contact area and thus reduces friction; it has a boss 1102 and a groove 1101, which serve as positioning tools during assembly.

[0074] Example 2 - Knob-type dual-adjustable bending suction system

[0075] like Figure 13 , 14As shown, the knob-type double-adjustable suction tube includes: a double-adjustable tube 12, a left double-adjustable handle 13, a double-adjustable sealing valve 14, a sealing cap 5, an extension tube 6, a guide clamp 7, a connector 8, a counterclockwise nut 15, a right double-adjustable handle 16, a limit bar 17, a collar 11, a fixing block 19, a clockwise nut 18, a double-adjustable end 20, a sealing plate 29, and an expander 30.

[0076] like Figure 15 As shown, the double-bending pipe 12 has two symmetrical bending wires 1201 and 1202. By pulling the bending wire 1201, the head end can be shifted to the right, and by pulling the bending wire 1202, the bending wire can be shifted to the left. The two bending wires cannot be pulled at the same time.

[0077] like Figure 16 As shown, the double-adjustable elbow end 20 has a groove 2001, which is assembled with the limiting rod 17 to restrict the movement of the fixing block 19. The remaining features are the same as those of the single-adjustable elbow end 2.

[0078] like Figure 17 As shown, the left double-bending handle 13 has a double-thread structure 1301. By assembling with the counterclockwise nut 15 and the clockwise nut 18, rotating the handle drives the threads forward and backward. The remaining features are the same as those of the left double-bending handle 10.

[0079] like Figure 18 As shown, the double-bending sealing valve 14 has a groove 1401, which is assembled with the fixing block 19 to restrict the movement of the fixing block 19; it also has a hole 1402, which is assembled with the limiting rod 17; the remaining features are the same as those of the sealing valve 4. The limiting rod 17 cooperates with the groove 1401 on the sealing valve 14 to restrict the movement of the fixing block 19, protect the bending screw during bending, and reduce failure.

[0080] like Figure 19 As shown, the counterclockwise nut 15 has a counterclockwise thread 1501, is assembled with the handle, and moves in the opposite direction to the clockwise nut when the handle is rotated; it also has a groove 1502, which is assembled with the limit bar 17.

[0081] like Figure 20 As shown, the right double-bending handle 16 has a double-thread structure 1601. By assembling with the counterclockwise nut 15 and the clockwise nut 18, rotating the handle drives the threads forward and backward. The remaining features are the same as those of the right bending handle 3.

[0082] like Figure 21 As shown, the clockwise nut 18 has a counterclockwise thread 1801, is assembled with the handle, and moves in the opposite direction to the clockwise nut when the handle is rotated; it also has a hole 1802, which is assembled with the limit bar 17.

[0083] like Figure 22As shown, the fixing block 19 has two holes 1901 and two threaded holes 1902, which work together to make the bending wire more secure.

[0084] The knob-type double-bend suction system can also be adjusted to a single-bend suction system. The specific method is as follows (e.g.) Figure 23 (As shown): Adjust the fixing block 19 to the front end of the clockwise nut 18 / counterclockwise nut 15, and fix the bending screw to the threaded hole 1803 / 1503 of the clockwise nut 18 / counterclockwise nut 15 with screws. When the handle is rotated, the nut moves and drives the bending screw, thereby bending the bending tube. Adjust the position of the fixing block 19 to limit the range of nut movement and protect the double bending tube 12.

[0085] Example 3 - Button-operated monotonic bending suction system

[0086] like Figure 24 As shown, the button-type monotonic bend suction system includes: bend adjustment tube 1, monotonic bend end 2, non-opening handle 24, monotonic bend sealing valve 4, sealing cover 5, extension tube 6, guide clamp 7, connector 8, pressing base 21, spring 25, pressing button 22, open handle 23, sealing plate 29, and expander 30.

[0087] like Figure 25 As shown, the pressing base 21 has a groove 2101 for fixing the spring 25 and a hole 2102 for fixing the bending wire.

[0088] like Figure 26 As shown, the press button 22 has

[0089] The scale 2201 is used to indicate the bending angle of the front end 102 of the bending tube; it has an anti-slip protrusion 2202; it has an extension protrusion 2203 to cover the inside when the button is moved; there are two rows of serrations 2204 on both sides of the button to lock the button 22 when it is pressed. It has a fixing protrusion 2205 to fix the spring 25.

[0090] like Figure 27 As shown, the open handle 23 has an opening 2301 that serves as the movement area for the press button 22; the opening 2301 has serrations 2302 on both sides, which cooperate with the serrations 2203 on the press button 22 to lock the press button 22. Releasing the button when the bend is in place ensures that the suction tube tip will not spring back.

[0091] Example 4 - Button-operated dual-bend suction system

[0092] like Figure 28As shown, the push-button type double-bending suction system includes: a double-bending tube 12, a double-bending sealing valve 14, a left push-button handle 26, a self-locking device 27, a fixing block 19, a limit bar 17, a right push-button handle 28, a sealing valve cover 5, an extension tube 6, a guide clamp 7, a connector 8, a double-bending head end 20, a sealing plate 29, an expander 30, a pressing base 21, a spring 25, and a pressing button 22. The push-button type double-bending suction system has a self-locking function to prevent accidental operation during bending. During bending, it ensures that only one bending screw is taut while the other is slack, protecting the bending tube and reducing failure.

[0093] like Figure 29 As shown, the left button handle 26 has a groove 2601 and a recess 2602, which are the movement areas of the self-locking device and restrict the self-locking device.

[0094] like Figure 30 As shown, the right button handle 28 has a groove 2801 and a recess 2802, which are the movement area of ​​the self-locking device and restrict the self-locking device.

[0095] like Figure 31 As shown, the self-locking device has anti-slip texture 2701, which serves as an anti-slip surface.

[0096] The functions of each component in the button-type double-bend suction system are the same as those of the corresponding components in the knob-type double-bend suction system and the button-type single-bend suction system.

[0097] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An adjustable bend suction system, characterized by, The utility model provides a kind of adjustable bending suction system, including bending pipe, head end, sealing valve, sealing valve cover, extension pipe, catheter clamp, connecting piece, ferrule, sealing sheet, dilator and bending device, wherein, the bending pipe is equipped with bending wire, the front end of the bending pipe is bent by pulling the bending wire, the bending device is connected with bending wire, and the pulling of the bending wire is controlled;The head end is assembled with the bending device to limit the bending device, and the head end is assembled with the sealing valve to limit the head end;The sealing valve limits the movement of the bending device, and the sealing valve cover is assembled to prevent the sealing valve cover from falling, the sealing sheet is located in the cavity of the sealing valve, the sealing valve cover is assembled with the sealing valve and the sealing sheet to fix and extrude the sealing sheet, one end of the extension pipe is assembled with the sealing valve, the other end of the extension pipe is assembled with the catheter clamp, and the extension pipe is controlled by opening and closing the catheter clamp to be open or blocked, the connecting piece connects the catheter clamp and suction device, so that the suction device is used to suck thrombus, the ferrule is located between the bending device and the sealing valve to reduce contact area and friction, the dilator is located in the bending pipe, and the adjustable bending suction system is penetrated, to support the bending pipe, reduce blood vessel damage and improve the ability of the suction system through blood vessel, the bending pipe is double bending pipe, the bending device is button type bending device, the bending pipe has symmetrical first bending wire and second bending wire, and the button type bending device includes left button handle, right button handle, fixed block, limiting rod, pressing base, spring, pressing key and self-locking device;The left button handle and right button handle are two hollow housings, and the two are matched to form a handle, wrap the internal structure, the left and right button handles have opening, which is the movement area of the pressing key, the two sides of the opening have sawtooth, which is matched with the two rows of sawtooth on the pressing key to lock the pressing key, one side of the left and right button handles has recess and pit, which is the movement area of the self-locking device and limits the self-locking device, the fixed block has upper and lower two, each fixed block has upper and lower two holes and upper and lower two threaded holes, the first bending wire and the second bending wire pass through the upper hole of the fixed block respectively, then bend and turn around to pass through the lower hole of the fixed block, and then screw into the upper and lower threaded holes, the screw extrudes the first and second bending wires with the fixed block, so as to fix the first and second bending wires, the limiting rod is matched with the hole of the head end of the double bending pipe and the sealing valve to limit the movement of the fixed block, the pressing base has recess to fix the spring, and has hole to fix the bending wire, the pressing key has scale to identify the angle of the front end of the bending pipe, has anti-slip boss to prevent slipping, has extension boss to shield inside when moving the pressing key, the self-locking device is located between the left and right button handles and sealing valve to prevent misoperation, and the self-locking device has anti-slip line to prevent slipping.

2. The adjustable bend smoking system of claim 1, wherein, The head end is symmetrical structure, the head end has first recess and first boss, in assembly, the first recess and the first boss play positioning role, has second recess, when assembling with the bending device, the second recess clamps, thereby playing the role of limiting the bending device, has third recess, the third recess is bending wire placement slot, playing the role of protecting the bending wire, has fourth recess, the fourth recess clamps the head end with the first boss on the sealing valve, thereby playing the role of limiting the head end.

3. The adjustable bend smoking system of claim 1, wherein, The sealing valve is hollow cylindrical, from left to right, has first boss, second boss, sixth recess, two layers of pagoda head, third boss, thread and cavity, the first boss is assembled with the head end, limiting head end, the second boss and the sixth recess together limit the bending device, the two layers of pagoda head is assembled with the extension pipe, the third boss is matched with the sealing valve cover, the thread is used for assembling with the sealing valve cover, the cavity is used for placing the sealing sheet, the sealing valve cover has anti-skid line, has first boss, when assembling with the sealing valve and the sealing sheet, the first boss plays the role of fixing extruding the sealing sheet, has second boss, for preventing the sealing valve from falling, has thread, for assembling with the sealing valve.

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