Catheter and guide wire fixing and storing mechanism for cerebral vascular intervention operation

Abstract

The application relates to the technical field of catheter and guide wire fixing devices, in particular to a catheter and guide wire fixing and containing mechanism for cerebral vascular interventional surgery, which comprises an inner cylinder and a fixing mechanism arranged on the hollow cylinder wall of the inner cylinder, a spiral guide hole spirally arranged along the cylinder axis is formed in the inner cylinder cylinder wall, end part guide holes communicated with the spiral guide hole are formed in the two end faces of the inner cylinder, the two end part guide holes are arranged one above the other and one left and the other right, a guide wire is placed into one end part guide hole, passes through the spiral guide hole and then passes out from the other end part guide hole, the guide wire is contained, a user puts a small arm through the inner cylinder and fixes the small arm through the fixing mechanism, and the whole device is worn. The catheter and guide wire fixing and containing mechanism for cerebral vascular interventional surgery can fix and contain interventional surgery equipment in cerebral vascular interventional surgery, avoids placing the redundant part of the interventional surgery equipment outside the body on the operating table, can reduce the infection risk, and improves the operation safety.

Description

Technical Field

[0001] This invention relates to the field of catheter and guidewire fixation devices, specifically a catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery. Background Technology

[0002] In interventional cerebrovascular surgery, catheters and guidewires are the core delivery system. The catheter is a flexible tubular structure made of polymer materials (such as polyurethane / nylon composite), functionally divided into three layers: a guiding catheter (6-8F) establishes the main access to the proximal carotid / vertebral artery; an intermediate catheter (5-6F) extends to the large intracranial vessels; and a microcatheter (0.021-0.027 inches) is superselectively delivered to the lesion area distal to the Circle of Willis, with a malleable tip containing platinum markings for easy angiography. The guidewire is a slender delivery carrier composed of a metal core (nickel-titanium alloy / stainless steel) and a hydrophilic coating, with a diameter of 0.010-0.038 inches. It transmits thrust through proximal rigidity and adapts to vascular tortuosity through distal flexibility. Its platinum-tungsten alloy tip provides precise navigation under DSA, enabling directional catheter delivery. Together, they form a minimally invasive technology chain of "access establishment - device delivery - treatment implementation", which is the physical basis for neurointerventional surgeries such as thrombectomy, embolization and stent placement. It needs to be operated in real time in conjunction with digital subtraction angiography (DSA).

[0003] During the procedure, the length design of the catheter and guidewire (usually 180-300cm for the guidewire and 80-150cm for the catheter) limits the space available for the interventional surgical instruments on the operating table. The space is limited to the distance from the puncture point to the end of the operating table. The operating table is narrow and lacks obstruction structures on both sides. The redundant section of the guidewire and catheter (>80cm) needs to be kept sterile within the narrow operating table (60-80cm wide), making it easy to touch non-sterile areas (occurrence rate 12-18%). The guidewire may even slip off the end of the catheter due to gravity (delay of ≥5 minutes per procedure), further increasing the risk of infection. This also wastes expensive surgical supplies and increases the financial burden on patients. Therefore, this application proposes a catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery. This mechanism can fix and store interventional surgical instruments during cerebrovascular interventional surgery, avoiding the placement of excessively long redundant sections of interventional surgical instruments on the operating table, thereby reducing the risk of infection and improving surgical safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery, comprising an inner cylinder and a fixing mechanism disposed on the hollow cylinder wall of the inner cylinder. The inner cylinder wall is provided with a spiral guide hole spirally wound along the cylinder axis. Both ends of the inner cylinder are provided with end guide holes communicating with the spiral guide hole. The two end guide holes are arranged one on the left and one on the right and vertically. The guidewire is inserted into one end guide hole, passes through the spiral guide hole, and then exits from the other end guide hole to realize the storage of the guidewire. The user passes the forearm through the inner cylinder and is fixed by the fixing mechanism to realize the wearing of the entire device.

[0006] Furthermore, the angle between the end guide hole and the spiral guide hole at the connection point is an obtuse angle, the spiral guide hole has ≥ number of spiral turns, and the spiral diameter of the spiral guide hole is ≥ cm.

[0007] Furthermore, the fixing mechanism includes an annular air chamber fixed to the hollow cylinder wall of the inner cylinder. Multiple rubber expansion airbags are fixed on the inner peripheral wall of the annular air chamber and are distributed in a circular pattern along its central axis. The annular air chamber has multiple sets of vent holes that are connected to the multiple rubber expansion airbags to supply air to the rubber expansion airbags. An inflation / deflation control component is provided on the end face of the annular air chamber near the wrist to control the degree of inflation of the rubber expansion airbags.

[0008] Furthermore, each group of multiple vent holes is linearly and equidistantly distributed, the rubber inflatable airbag is a sheet-like structure and its edge is adhered to the inner wall of the annular air chamber by sealant, and each group of multiple vent holes is located in the rubber inflatable airbag corresponding to that group of vent holes.

[0009] Furthermore, the inflation / deflation control assembly includes an inlet pipe and an outlet pipe distributed vertically. Both the inlet pipe and the outlet pipe penetrate into the annular air chamber and are sealed to the annular air chamber. The inlet pipe is equipped with a one-way valve, and an inflation nozzle is fixed to the inlet end of the inlet pipe. The outlet pipe is equipped with an exhaust valve located outside the annular air chamber.

[0010] Furthermore, a rotating ring is rotatably sleeved on the outer peripheral wall of the inner cylinder via a bearing. A spiral guide groove is formed on the outer peripheral wall of the rotating ring, spirally encircling the axis. An end guide groove is formed on the outer peripheral wall of the rotating ring, with one end extending to the right end face of the rotating ring and communicating with the spiral guide groove. A guide tube is wound around the spiral guide groove, with one end exiting from the end guide groove. A guide mechanism is provided on the left side of the rotating ring to allow the other end of the guide tube to pass through and guide it. A limiting mechanism is provided on the outer side of the rotating ring to restrict the guide tube wound around the spiral guide groove.

[0011] Furthermore, the angle between the end guide groove and the spiral guide groove at the connection point is an obtuse angle, the spiral guide groove has ≥ the number of spiral turns, the bottom of both the spiral guide groove and the end guide groove is arc-shaped, and the depth of the spiral guide groove at the end near the wrist gradually decreases until it is flush with the outer peripheral wall of the rotating ring.

[0012] Furthermore, the limiting mechanism includes a side plate located on one side of the inner cylinder and arranged vertically. Two fixing rods are vertically fixed on one side of the side plate and extend through and into the inner cylinder wall. Two limiting rods located on the front and rear sides of the rotating ring and in contact with the outer wall of the rotating ring are rotatably connected to one side of the side plate via bearings. An arc-shaped cover is provided on the outer wall of the rotating ring to cover the guide tube in the end guide groove. Two positioning rods inserted into the rotating ring are fixed on the arc-shaped cover.

[0013] The guiding mechanism includes a fixing plate fixed on the left end face of the inner cylinder. A guide tube located outside the rotating ring is vertically passed through the fixing plate. Both ends of the guide tube are fixedly fitted with conduit sleeves. The opposite ends of the two conduit sleeves are integrally formed with silicone soft conduits. After the conduit is inserted into the silicone soft conduit on one side, it enters the guide tube and exits from the silicone soft conduit on the other side.

[0014] Furthermore, the inner cylinder is provided with a fixing mechanism away from the wrist to fix the entire device to the edge of the operating table. The fixing mechanism includes a docking component and a clamping component.

[0015] The clamping assembly includes an outer clamping plate and an inner clamping plate. A first threaded rod, threadedly connected to the inner clamping plate, passes through both the outer and inner clamping plates. The first threaded rod is rotatably connected to the outer clamping plate via a bearing. An L-shaped connecting plate is fixed to the side of the outer clamping plate away from the inner clamping plate. A horizontal plate is fixed to the other end of the L-shaped connecting plate. A rotating column is rotatably connected to the center of the top surface of the horizontal plate via a bearing. A vertical plate is fixed to the top surface of the horizontal plate. A second threaded rod, threadedly connected to the vertical plate, passes through the vertical plate. One end of the second threaded rod is rotatably connected to an arc-shaped abutment plate via a bearing to abut against the rotating column. A rotating plate is fixed to the top of the rotating column. A connecting rod is vertically fixed to the center of the top surface of the rotating plate.

[0016] Furthermore, the docking assembly includes a sealing plate located on one side of the inner cylinder. A threaded groove is formed on the inner circumferential wall of the inner cylinder. A threaded ring is fixed on one side of the sealing plate and inserted into the inner cylinder and threadedly connected to the threaded groove on the inner circumferential wall of the inner cylinder. A fixed cylinder for inserting the docking rod is fixed on the other side of the sealing plate. A support ring for supporting the fixed cylinder is fixed on the outer circumferential wall of the docking rod.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. By pre-inserting the guidewire inside the inner tube wall, the user can wear and fix the entire device on the forearm. The front end of the guidewire will have a redundant section located outside the end guide hole. During cerebrovascular interventional surgery, the user can pull the guidewire with one hand to release the guidewire located in the spiral guide hole. Then, by bending the wrist of the wearing hand, the released guidewire is delivered into the patient's body. The whole process effectively avoids the excessively long redundant section of the guidewire being placed on the operating table, reducing the risk of infection and making the process of inserting the guidewire into the patient's body more convenient.

[0019] 2. By winding the catheter around the spiral guide groove and end guide groove of the rotating ring, and then inserting the other end of the catheter into the guide tube and exiting through the silicone soft catheter on the other side, the catheter can be led out and changed direction. When using it, the user pulls on one end of the catheter, causing the rotating ring to rotate under force. At this time, due to the rotation of the rotating tube and the pulling force, the catheter will automatically detach from the spiral guide groove until it is detached to the end guide groove. At this time, the catheter has been mostly inserted into the patient's body. Then the catheter cap can be removed and the entire catheter can be removed from the rotating ring. The whole process effectively avoids the excessive length of the catheter outside the body being placed on the operating table, reducing the risk of infection and making the process of inserting the guidewire into the patient's body more convenient.

[0020] 3. The entire device can also be clamped to the vertical edge of the operating table via the inner and outer clamps, suspending the device on the operating table. After suspension, the angle can be adjusted so that the direction in which the catheter exits from the spiral guide groove directly faces the patient. Similarly, the guidewire can be adjusted so that the direction of its exit wire directly faces the patient. This allows the user to better retrieve and deliver the catheter and guidewire that are pre-set on the device, avoiding the need for excessively long redundant sections of interventional surgical instruments to be placed on the operating table, reducing the risk of infection and improving surgical safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the inner cylinder of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the right side of the arc-shaped cover plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the left side structure of the present invention;

[0026] Figure 6This is a schematic diagram of the installation structure of the docking component of the present invention;

[0027] Figure 7 This is a schematic diagram of the right side structure after the sealing plate of the present invention is installed;

[0028] Figure 8 This is a schematic diagram of the structure of the present invention fixed to the edge of the operating table;

[0029] In the diagram: 1. Rotating ring; 2. Inner cylinder; 3. Annular air chamber; 4. Rubber inflatable air bladder; 5. Air inlet pipe; 6. One-way valve; 7. Inflation nozzle; 8. Air outlet pipe; 9. Exhaust valve; 10. Spiral guide hole; 11. End guide hole; 12. Spiral guide groove; 13. End guide groove; 14. Arc-shaped cover; 15. Positioning rod; 16. Positioning groove; 17. Side plate; 18. Limiting rod; 19. Fixing rod; 20. Fixing plate; 21. Guide... 21. Guiding tube; 22. Silicone flexible tubing; 23. Tube sleeve; 24. Sealing plate; 25. Threaded ring; 26. Threaded groove; 27. Fixing cylinder; 28. Connecting rod; 29. ​​Supporting ring; 30. Outer clamping plate; 31. Inner clamping plate; 32. First threaded rod; 33. L-shaped connecting plate; 34. Horizontal plate; 35. Rotating column; 36. Arc-shaped abutment plate; 37. Vertical plate; 38. Second threaded rod; 39. Rotating plate; 40. Vent hole. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In existing technologies, the space available for placing and moving interventional surgical instruments on the operating table is limited to the distance from the puncture point to the end of the operating table. The operating table is narrow with no obstructions on either side. Guidewires and catheters with redundant external sections exceeding 80cm must be kept sterile within a narrow operating table width of 60-80cm. This results in an 12-18% chance of touching non-sterile areas. This application aims to provide a device for fixing and storing interventional surgical instruments during cerebrovascular interventional surgery, avoiding the placement of excessively long redundant external sections of the instruments on the operating table, thus reducing the risk of infection and improving surgical safety.

[0032] Please see Figure 1-3This embodiment provides a catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery, including an inner cylinder 2 and a fixing mechanism disposed on the hollow cylinder wall of the inner cylinder 2. The inner cylinder 2 has a spiral guide hole 10 that spirals around the cylinder axis. Both ends of the inner cylinder 2 have end guide holes 11 that communicate with the spiral guide hole 10. The two end guide holes 11 are arranged one on the left and one on the right and are arranged vertically. The guidewire is inserted into one end guide hole 11, passes through the spiral guide hole 10, and then exits from the other end guide hole 11 to realize the storage of the guidewire.

[0033] Before use, the device and guidewire need to be cleaned, disinfected or sterilized. Then, the guidewire is pre-inserted into the inner cylinder 2. During use, the user inserts their forearm through the inner cylinder 2 and fixes it with the fixing mechanism to complete the wearing of the entire device. After wearing, a redundant section of the guidewire will be located outside the end guide hole 11. During cerebrovascular interventional surgery, the user can pull the guidewire with one hand to release the guidewire located in the spiral guide hole 10. Then, by bending the wrist of the wearing hand, the released guidewire is delivered into the patient's body. The whole process effectively avoids the excessively long redundant section of the guidewire being placed on the operating table, reducing the risk of infection and making the process of inserting the guidewire into the patient's body more convenient.

[0034] The spiral guide hole 10 spirally winds around the axis of the inner cylinder 2, allowing the guide wire to move smoothly inside. However, the end guide holes 11 at both ends face the two end faces of the inner cylinder 2. A transition zone exists where the end guide holes 11 connect to the spiral guide hole 10. To ensure smoother guide wire movement, the angle between the end guide holes 11 and the spiral guide hole 10 is obtuse. This obtuse angle transition effectively avoids stress concentration, making the guide wire move more smoothly. Furthermore, the guide wire length is typically 180-300cm. To adapt to the guide wire length, the following formula can be used: L=πDQ, where D is the diameter and Q is the number of turns of the spiral guide hole 10. When the guidewire length is 180cm and Q is three turns, the spiral diameter of the spiral guide hole 10 is approximately 19cm. It should be noted that in actual use, only the front end of the guidewire needs to be exposed through the end guide hole 11. The rear end does not need to be fully exposed; it can be placed inside the spiral guide hole 10, or the rear end can be exposed through the end guide hole 11 for a certain length. This is because at a certain length, the guidewire will not droop due to gravity and affect the surgery. Therefore, considering the overall bulkiness of the device worn on the user's arm, the present invention preferably has a spiral number of ≥3 turns for the spiral guide hole 10 and a spiral diameter of ≥18cm.

[0035] Meanwhile, in order to better observe the guide wire inserted into the spiral guide hole 10, the inner cylinder 2 can be made of a transparent material.

[0036] Please see Figure 4-5The fixing mechanism includes an annular air chamber 3 fixed to the hollow cylinder wall of the inner cylinder 2. Multiple rubber expansion air bags 4 are fixed on the inner peripheral wall of the annular air chamber 3 and are distributed in a circular shape at equal intervals along its central axis. Multiple sets of vent holes 40 are opened on the annular air chamber 3 to connect with the multiple rubber expansion air bags 4 and supply air to the rubber expansion air bags 4. An inflation and deflation control component is provided on the end face of the annular air chamber 3 near the wrist to control the degree of inflation of the rubber expansion air bags 4.

[0037] In this configuration, multiple vent holes 40 in each group are linearly and equidistantly distributed. The rubber expansion airbag 4 has a sheet-like structure and its edges are adhered to the inner wall of the annular air chamber 3 by sealant. Each group of multiple vent holes 40 is located inside the rubber expansion airbag 4 corresponding to that group of vent holes 40.

[0038] The inflation / deflation control assembly includes an inlet pipe 5 and an outlet pipe 8 distributed vertically. Both the inlet pipe 5 and the outlet pipe 8 pass through the annular air chamber 3 and are sealed to the annular air chamber 3. A one-way valve 6 is provided on the inlet pipe 5, and an inflation nozzle 7 is fixed at the inlet end of the inlet pipe 5. An exhaust valve 9 located outside the annular air chamber 3 is provided on the outlet pipe 8.

[0039] When in use, the user can pass their forearm through the inner cylinder 2, and then connect the external air supply device to the air nozzle 7. Activate the external air supply device to supply air into the annular air chamber 3. The gas inflates the rubber expansion airbags 4 through the vent 40. Multiple rubber expansion airbags 4 expand and contact the user's arm, squeezing the arm to achieve clamping and fixation. After the entire device is used up, the user can use their other hand to operate the exhaust valve 9 to release the air from the annular air chamber 3, ending the clamping and fixation. Then, the user can pull their forearm out of the inner cylinder 2.

[0040] In cerebrovascular interventional surgery, in addition to guidewires, interventional surgical instruments also include catheters. In this invention, a structure for fixing and storing the guidewire is also provided. Specifically, a rotating ring 1 is rotatably sleeved on the outer peripheral wall of the inner cylinder 2 via a bearing. A spiral guide groove 12 is provided on the outer peripheral wall of the rotating ring 1, spirally encircling the axis. An end guide groove 13 is provided on the outer peripheral wall of the rotating ring 1, with one end extending to the right end face of the rotating ring 1 and communicating with the spiral guide groove 12. The catheter is wound around the spiral guide groove 12, with one end leading out from the end guide groove 13. A guide mechanism is provided on the left side of the rotating ring 1 to allow the other end of the catheter to pass through and guide it. A limiting mechanism is provided on the outer side of the rotating ring 1 to restrict the catheter wound around the spiral guide groove 12.

[0041] The end guide groove 13 and the spiral guide groove 12 are similar in design to the end guide hole 11 and the spiral guide hole 10. The difference is that the bottom of both the spiral guide groove 12 and the end guide groove 13 is arc-shaped. The depth of the spiral guide groove 12 gradually decreases at the end near the wrist until it is flush with the outer peripheral wall of the rotating ring 1. In use, the guide tube is wound around the spiral guide groove 12 and the end guide groove 13, with one end leading out from the end guide groove 13. The reason for the spiral guide groove 12 being designed to gradually decrease in depth at the end near the wrist until it is flush with the outer peripheral wall of the rotating ring 1 is to allow the other end to... The catheter is more naturally and smoothly exited from the spiral guide groove 12. At the same time, in order to make the movement of the catheter smoother, the angle between the end guide groove 13 and the spiral guide groove 12 is also an obtuse angle. The obtuse angle transition can effectively avoid stress concentration. Similar to the guide wire, in actual use, the catheter only needs to exit from the end guide groove 13 at the front end. As for the rear end, it can be placed outside the spiral guide groove 12, and a certain length can be exposed. Because at a certain length, the catheter will not droop due to gravity and affect the operation. Therefore, the spiral number of turns of the spiral guide groove 12 is preferably greater than or equal to 3 turns.

[0042] The limiting mechanism includes a side plate 17 located on one side of the inner cylinder 2 and arranged vertically. Two fixing rods 19 are vertically fixed on one side of the side plate 17 and extend through and into the inner cylinder 2. Two limiting rods 18 located on the front and rear sides of the rotating ring 1 and in contact with the outer wall of the rotating ring 1 are rotatably connected to one side of the side plate 17 via bearings. An arc-shaped cover 14 is provided on the outer wall of the rotating ring 1 to cover the guide tube in the end guide groove 13. Two positioning rods 15 inserted into the rotating ring 1 are fixed on the arc-shaped cover 14. The guiding mechanism includes a fixing plate 20 fixed on the left end face of the inner cylinder 2. A guide tube 21 located outside the rotating ring 1 is vertically passed through the fixing plate 20. Both ends of the guide tube 21 are fixedly fitted with guide tube sleeves 23. The opposite ends of the two guide tube sleeves 23 are integrally formed with silicone soft guide tubes 22. After the guide tube is inserted into the silicone soft guide tube 22 on one side, it enters the guide tube 21 and exits from the silicone soft guide tube 22 on the other side.

[0043] The inner cylinder 2 has a fixing groove on its wall for inserting and matching the fixing rod 19, and the rotating ring 1 has a positioning groove 16 for inserting and matching the positioning rod 15. It should be noted that after the fixing rod 19 is inserted into the fixing groove and the positioning rod 15 is inserted into the positioning groove 16, the guide tube cover and the side plate 17 can still be disassembled. That is, the friction of the fixing rod 19 after being inserted into the fixing groove and the friction of the positioning rod 15 after being inserted into the positioning groove 16 will not cause them to separate under force during normal use of the entire device. When disassembly is required, a pulling force can be applied manually to pull out the fixing rod 19 and the positioning rod 15.

[0044] Once the catheter is wound within the spiral guide groove 12, it will be submerged within it. At this point, a limiting rod 18, which fits against the rotating ring 1, restricts its movement, preventing the catheter from detaching from the spiral guide groove 12. Similarly, the catheter extending from the end guide groove 13 is covered by the catheter cap to prevent it from detaching. Furthermore, the catheter's movement differs from that of the guidewire; it does not move within the spiral guide groove 12. During use, the user pulls on one end of the catheter, causing the rotating ring 1 to rotate. Due to the rotation of the rotating tube and the pulling force, the catheter will automatically detach from the spiral guide groove 12 until it reaches the end guide groove 13. At this point, the catheter is mostly inserted into the patient's body. The catheter cap can then be removed, and the entire catheter can be removed from the rotating ring 1. In this process, because the limiting rod 18 is rotatably connected to the side plate 17 through the bearing, after the conduit is restricted by the limiting rod 18, when the conduit is subjected to a pulling force, the conduit will disengage from the spiral guide groove 12. The limiting rod 18 will not affect the smoothness of the conduit disengagement due to its rotation. At the same time, it should be noted that when the rotating ring 1 rotates, the conduit cover will also rotate. Therefore, the length of the limiting rod 18 is smaller than the length of the rotating ring 1, but it can just cover at least three turns of the spiral guide groove 12. During the rotation of the rotating ring 1, the movement of the conduit cover will not be interfered with by the limiting rod 18. In addition, the length of the rotating ring 1 is smaller than the length of the inner cylinder 2. The reason for this design is that the side plate 17 is fixed on the end face of the inner cylinder 2 to avoid friction between the rotating ring 1 and the side plate 17 during the rotation.

[0045] The guide mechanism is designed to change the direction of the catheter. After the catheter detaches from the spiral guide groove 12, it can pass sequentially through the right-side silicone soft catheter 22, the right-side catheter sleeve 23, the guide tube 21, the left-side catheter sleeve 23, and the left-side silicone soft catheter 22, thus changing the direction of the catheter. This facilitates the insertion of the catheter after the user puts on the entire device. In the above structure, it should be noted that the guide tube 21, the catheter sleeve 23, and the silicone soft catheter 22 are all made of silicone, but with different hardnesses. The guide tube 21 and the catheter sleeve 23 are semi-rigid with a hardness of 50-70 degrees, balancing support and flexibility, while the silicone soft catheter 22 has a hardness of 30-40 degrees and moderate elasticity. This design is intended to allow the silicone soft catheter 22 to bend after the catheter changes direction and is subjected to force when passing through the three components, thereby adapting to the catheter and making the change of direction of the catheter smoother.

[0046] Meanwhile, to better observe the condition of the guidewire and catheter, the rotating ring 1 can be made of a transparent material.

[0047] Please see Figure 6-8In addition to the above-mentioned wearable usage, the present invention can also be fixed to the edge of the operating table. By adjusting the angle of the entire device, the direction in which the catheter comes out of the spiral guide groove 12 directly faces the patient, without the need to change the direction of the catheter, which is more conducive to catheter operation. Specifically, the inner cylinder 2 is provided with a fixing mechanism away from the wrist to fix the entire device to the edge of the operating table. The fixing mechanism includes a docking component and a clamping component.

[0048] The clamping assembly includes an outer clamping plate 30 and an inner clamping plate 31. A first threaded rod 32, threadedly connected to the inner clamping plate 31, passes through the outer clamping plate 30 and the inner clamping plate 31. The first threaded rod 32 is rotatably connected to the outer clamping plate 30 via a bearing. An L-shaped connecting plate 33 is fixed to the side of the outer clamping plate 30 away from the inner clamping plate 31. A horizontal plate 34 is fixed to the other end of the L-shaped connecting plate 33. A rotating column 35 is rotatably connected to the center of the top surface of the horizontal plate 34 via a bearing. A vertical plate 37 is fixed to the top surface of the horizontal plate 34. A second threaded rod 38, threadedly connected to the vertical plate 37, passes through the vertical plate 37. One end of the second threaded rod 38 passes through... The bearing rotatably connects to an arc-shaped abutment plate 36 for abutting the rotating column 35. A rotating plate 39 is fixed to the top of the rotating column 35. A docking rod 28 is vertically fixed at the center of the top surface of the rotating plate 39. The docking assembly includes a sealing plate 24 located on one side of the inner cylinder 2. A threaded groove 26 is provided on the inner circumferential wall of the inner cylinder 2. A threaded ring 25 is fixed on one side of the sealing plate 24, which is inserted into the inner cylinder 2 and threadedly connected to the threaded groove 26 on the inner circumferential wall of the inner cylinder 2. A fixed cylinder 27 for the docking rod 28 to be inserted is fixed on the other side of the sealing plate 24. A support ring 29 is fixed on the outer circumferential wall of the docking rod 28 for supporting the fixed cylinder 27.

[0049] The fixed cylinder 27 is adapted to the docking rod 28. After the docking rod 28 is inserted into the fixed cylinder 27, the friction between the two is sufficient to ensure that the docking rod 28 will not rotate inside the fixed cylinder 27 when the entire device is under normal use and force is applied. When the entire device needs to be disassembled, the docking rod 28 can be manually pulled out from the fixed cylinder 27. In addition, when the threaded ring 25 is fully screwed into the inner cylinder 2, the sealing plate 24 abuts against the inner cylinder 2. At this time, the direction of the inner cylinder 2 is such that the end guide hole 11 located on the lower left side is directly below. The inner clamping plate 31 is provided with a first threaded through hole that is threadedly connected to the first threaded rod 32, and the upright plate 37 is provided with a second threaded through hole that is threadedly connected to the second threaded rod 38.

[0050] In use, by rotating the first threaded rod 32, the inner clamping plate 31 moves towards the outer clamping plate 30, causing the inner clamping plate 31 and the outer clamping plate 30 to abut against the vertical edge of the operating table, achieving clamping and fixation. After the threaded ring 25 is fully screwed into the inner cylinder 2, the connecting rod 28 is inserted into the fixing cylinder 27, supported by the supporting ring 29. When it is necessary to adjust the angle of the entire device, the rotating plate 39 can be rotated, and then the second threaded rod 38 can be rotated, causing the arc-shaped abutting plate 36 to abut against the rotating column 35, thus fixing the rotating plate 39 and completing the adjustment of the angle of the entire device. In this way, the device can be suspended on the operating table, and the user can extract and feed catheters and guidewires that have been pre-set on the device, avoiding the placement of excessively long redundant sections of interventional surgical instruments on the operating table, reducing the risk of infection, and improving surgical safety.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catheter and guidewire fixation and storage mechanism for cerebrovascular interventional surgery, characterized in that, The utility model relates to a kind of wearable device for the treatment of diabetes, including: The inner cylinder (2) is provided with spiral guide hole (10) spirally around along the axis of the cylinder wall, and the both ends of the inner cylinder (2) are provided with end guide hole (11) communicated with spiral guide hole (10), two end guide holes (11) are arranged left and right and up and down, the guide wire is placed in one end guide hole (11) and passes through spiral guide hole (10) and then passes out from the other end guide hole (11), to realize the accommodation of guide wire; The fixed mechanism is arranged on the hollow cylinder wall of the inner cylinder (2), the user passes the forearm through the inner cylinder (2) and is fixed by the fixed mechanism, to realize the wearing of the whole device; The outer peripheral wall of the inner cylinder (2) is rotatably sleeved with rotating ring (1) through bearing, the outer peripheral wall of the rotating ring (1) is provided with spiral guide groove (12) spirally around along the axis, the outer peripheral wall of the rotating ring (1) is provided with end guide groove (13) extending to the right side end surface of the rotating ring (1) and communicated with spiral guide groove (12), the catheter is arranged on spiral guide groove (12) and one end is guided out from end guide groove (13), the left side of the rotating ring (1) is provided with guide mechanism for guiding the other end of the catheter to pass out, the outer side of the rotating ring (1) is provided with limiting mechanism for limiting the catheter arranged on spiral guide groove (12). The included angle of the communication between the end guide groove (13) and the spiral guide groove (12) is obtuse, the spiral turns of the spiral guide groove (12) are greater than or equal to 3 turns, the groove bottoms of the spiral guide groove (12) and the end guide groove (13) are arc-shaped, and the depth of the end groove of the spiral guide groove (12) close to the wrist gradually decreases until it is flush with the outer peripheral wall of the rotating ring (1).

2. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 1, characterized in that: The included angle of the communication between the end guide hole (11) and the spiral guide hole (10) is obtuse, the spiral turns of the spiral guide hole (10) are greater than or equal to 3 turns, and the spiral diameter of the spiral guide hole (10) is greater than or equal to 18 cm.

3. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 2, characterized in that: The fixed mechanism includes annular air chamber (3) fixed on the hollow cylinder wall of the inner cylinder (2), a plurality of rubber expansion air bags (4) are fixed on the inner side peripheral wall of the annular air chamber (3) and are circularly and equidistantly distributed along the axis thereof, a plurality of air holes (40) are arranged on the annular air chamber (3) and are communicated with the plurality of rubber expansion air bags (4) respectively to supply air to the rubber expansion air bags (4), and a gas charging and discharging control assembly is arranged on the end surface of the annular air chamber (3) close to the wrist to control the expansion degree of the rubber expansion air bags (4).

4. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 3, characterized in that: Each group of the plurality of air holes (40) is linearly and equidistantly distributed, the rubber expansion air bag (4) is in sheet structure and its edge is adhered to the inner side wall of the annular air chamber (3) by sealing glue, and each group of the plurality of air holes (40) is located in the rubber expansion air bag (4) corresponding to the group of air holes (40).

5. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 4, characterized in that: The inflation and deflation control assembly comprises an air inlet pipe (5) and an air outlet pipe (8) arranged in an up-down manner, the air inlet pipe (5) and the air outlet pipe (8) both penetrate into the annular air chamber (3) and are sealed with the annular air chamber (3), the air inlet pipe (5) is provided with a one-way valve (6), the air inlet end of the air inlet pipe (5) is fixed with an inflation nozzle (7), and the air outlet pipe (8) is provided with an air outlet valve (9) located outside the annular air chamber (3).

6. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 1, characterized in that: The limiting mechanism comprises a side plate (17) arranged in an up-down manner on one side of the inner cylinder (2), one side of the side plate (17) is vertically fixed with two fixed rods (19) penetrating and extending into the cylinder wall of the inner cylinder (2), and one side of the side plate (17) is rotatably connected with two limiting rods (18) located on the front and back sides of the rotating ring (1) and abutting against the outer wall of the rotating ring (1) through bearings. The guiding mechanism comprises a fixed plate (20) fixed on the left end face of the inner cylinder (2), the fixed plate (20) is vertically penetrated with a guide pipe (21) located outside the rotating ring (1), and the two ends of the guide pipe (21) are both fixedly sleeved with a guide pipe sleeve (23), and the guide pipe sleeves (23) are both integrally formed with a silica gel soft pipe (22) at the opposite end.

7. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 5 or 6, characterized in that, The inner cylinder (2) is provided with a fixing mechanism away from the wrist, so as to fix the whole device on the edge of a surgical bed, and the fixing mechanism comprises a butt joint assembly and a clamping assembly. The clamping assembly comprises an outer clamping plate (30) and an inner clamping plate (31), the outer clamping plate (30) and the inner clamping plate (31) are both penetrated with a first threaded rod (32) threadedly connected with the inner clamping plate (31), the first threaded rod (32) is rotatably connected with the outer clamping plate (30) through a bearing, one side of the outer clamping plate (30) away from the inner clamping plate (31) is fixed with an L-shaped connecting plate (33), the other end of the L-shaped connecting plate (33) is fixed with a horizontal plate (34), the top surface of the horizontal plate (34) is rotatably connected with a rotating column (35) through a bearing at the center, the top surface of the horizontal plate (34) is fixed with a vertical plate (37), the vertical plate (37) is penetrated with a second threaded rod (38) threadedly connected therewith, one end of the second threaded rod (38) is rotatably connected with an arc-shaped abutting plate (36) for abutting against the rotating column (35) through a bearing, and the top end of the rotating column (35) is fixed with a rotating plate (39), and the top surface of the rotating plate (39) is vertically fixed with a butt joint rod (28).

8. The catheter and guide wire fixing and storing mechanism for cerebral vascular intervention surgery according to claim 7, characterized in that: The butt joint assembly comprises a sealing plate (24) on one side of an inner cylinder (2), a threaded groove (26) is formed on the inner circumferential wall of the inner cylinder (2), a threaded ring (25) is fixed on one side of the sealing plate (24) and is inserted into the inner cylinder (2) and is in threaded connection with the threaded groove (26) on the inner circumferential wall of the inner cylinder (2), and a fixing cylinder (27) for inserting a butt joint rod (28) is fixed on the other side of the sealing plate (24), and the outer circumferential wall of the butt joint rod (28) is fixed with a supporting ring (29) for supporting the fixing cylinder (27).

Images