Magnetic sensing real-time navigation drainage catheter

Abstract

The application relates to the technical field of drainage catheters, in particular to a magnetic-sensing real-time navigation drainage catheter. When the drainage catheter is used, a hollow support wire is inserted into a drainage tube, a plug and a magnetic-sensing chip are located at the distal end of the hollow support wire, that is, the magnetic sensor is located at the distal end position of the drainage tube; a magnetic field is applied outside the human body, so that the relative position of the magnetic-sensing chip in the human body can be displayed on a magnetic-sensing host in real time, and the drainage tube can be more accurately delivered to a predetermined position in the human body. During the process of inserting the drainage catheter into the drainage tube, the plug first enters the drainage tube, the cross section of the distal end of the plug is a polygon or an ellipse, so that the plug distal end has a smaller contact area with the inner wall of the drainage tube, thereby reducing the sliding friction when the relative displacement between the plug and the drainage tube, and the drainage catheter can be more smoothly inserted into or pulled out of the drainage tube, so that the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of drainage catheter technology, and in particular to a magnetically sensed real-time navigation drainage catheter. Background Technology

[0002] In traditional drainage procedures, doctors need to use CT / MRI scans to determine the insertion depth of the drainage catheter. Traditional drainage procedures have the following drawbacks: 1. Operating CT / MRI tomography equipment requires professional personnel. The equipment is complex to operate, which severely restricts surgical efficiency. 2. Do not move the drainage catheter during CT scan, as this will cause intraoperative interruption and increase the operation time; 3. Tomography scans involve radiation, which can affect human health, especially delicate internal organs such as the brain, kidneys, and bladder.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this application is to provide a magnetically sensed real-time navigation drainage catheter and its packaging method to solve or alleviate the problems existing in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: A magnetically sensed real-time navigation drainage catheter, the drainage catheter comprising: Hollow support wire, wherein the hollow support wire has a hollow structure and the outer diameter of the hollow support wire is smaller than the inner diameter of the drainage tube; A plug is placed at the distal end of a hollow support wire, and the outer diameter of the plug is smaller than the inner diameter of the drainage tube; the cross-section of the distal end of the plug exposed above the hollow support wire is a non-circular structure. A magnetic sensing chip is installed inside the plug, and the magnetic sensing chip has a positioning function in conjunction with an external magnetic field.

[0006] In the magnetically sensed real-time navigation drainage catheter described above, preferably, the cross-section of the distal end of the plug is polygonal or elliptical.

[0007] Preferably, in the magnetic sensing real-time navigation drainage conduit described above, the plug is provided with an axial groove that extends along the axial direction of the plug, and the magnetic sensing chip is installed in the axial groove of the plug.

[0008] Preferably, in the magnetic sensing real-time navigation drainage conduit described above, the plug is further provided with a radial groove, which extends along the radial direction of the plug and intersects with the axial groove.

[0009] In the magnetic sensing real-time navigation drainage conduit described above, preferably, a locking block is installed in the radial groove of the plug; after the magnetic sensing chip is inserted into the axial groove of the plug, the locking block is installed in the radial groove, so that the locking block blocks the end of the axial groove, so as to fix the magnetic sensing chip in the plug by the locking block; the cross-section of the locking block is a C-shaped structure.

[0010] In the magnetically sensed real-time navigation drainage catheter described above, preferably, the magnetic sensing chip is fixed in the axial groove of the plug using medical adhesive.

[0011] In the magnetic sensing real-time navigation drainage conduit described above, preferably, the magnetic sensing chip is fixedly installed in the axial groove of the plug by a tension fit.

[0012] Preferably, in the magnetic sensing real-time navigation drainage conduit described above, the magnetic sensing chip is also connected to a wire harness, which passes through the hollow support wire; the card block is provided with a clearance groove, and when the card block is locked in the radial groove, the wire harness passes through the clearance groove on the card block. The end of the wiring harness away from the magnetic sensing chip is connected to a board-side plug, which is used for electrical connection to the magnetic sensing host.

[0013] Preferably, in the magnetic sensing real-time navigation drainage conduit described above, the drainage conduit further includes a strength support wire, which is a hollow structure and is disposed between the hollow support wire and the wire harness.

[0014] Preferably, in the magnetic sensing real-time navigation drainage catheter described above, the drainage catheter further includes a knurled handle, and the proximal ends of the hollow support wire and the strength support wire are both mounted on the knurled handle, with the wire harness passing through the knurled handle.

[0015] Compared with the closest prior art, the technical solution of this application has the following beneficial effects: When using this drainage catheter, the hollow support wire is inserted into the drainage tube. Since the plug and the magnetic sensing chip are located at the far end of the hollow support wire, the magnetic sensor is located at the far end of the drainage tube. By applying a magnetic field outside the human body, the relative position of the magnetic sensing chip inside the human body can be displayed in real time on the magnetic sensing host, which is more conducive to accurately delivering the drainage tube to the predetermined position in the human body.

[0016] During surgery using this drainage catheter, there is no need to rely on a computed tomography (CT) scanner. This not only reduces the number of professionals required to operate the equipment and lowers the qualification threshold for surgery, but also avoids the damage to the human body caused by radiation from the scanning equipment. Secondly, doctors can observe the distal position and insertion depth of the drainage tube in real time during the operation, which helps to reduce intraoperative time and improve surgical efficiency.

[0017] During the insertion of the drainage catheter into the drainage tube, the plug enters the drainage tube first. The cross-section of the distal end of the plug is set to a non-circular structure. Specifically, the cross-section of the distal end of the plug is polygonal (e.g., quadrilateral, pentagonal, hexagonal, etc.) or elliptical, so that the distal end of the plug has a smaller contact area with the inner wall of the drainage tube. This reduces the sliding friction force when the plug and the drainage tube are relatively displaced, making the insertion or removal of the drainage catheter smoother and improving the efficiency of the operation. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a schematic diagram of the assembly of a drainage catheter and a drainage tube according to some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a drainage catheter provided according to some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a plug provided according to some embodiments of this application; Figure 4 This is a schematic diagram illustrating the use of a drainage catheter installed according to some embodiments of this application; Figure 5 A plug with a hexagonal distal cross-section provided according to some embodiments of this application; Figure 6 This is a plug with an elliptical distal cross-section provided according to some embodiments of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Drainage tube; 2. Hollow support wire; 3. Knurled handle; 4. Wire harness; 5. Board edge plug; 6. Plug; 61. Locking block; 7. Magnetic sensor chip; 8. Strength support wire; 9. Fixing sheath; 10. Magnetic sensor host. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0021] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present application can be combined with each other.

[0023] According to specific embodiments of this application, such as Figure 1-6 As shown, this application provides a magnetically sensed real-time navigation drainage catheter, the drainage catheter comprising: Hollow support wire 2 has a hollow structure, and its outer diameter is smaller than that of the drainage tube 1.

[0024] The plug 6 is located at the distal end of the hollow support wire 2, and the outer diameter of the plug 6 is smaller than the inner diameter of the drainage tube 1; the cross-section of the distal end of the plug 6 exposed above the hollow support wire 2 is a non-circular structure.

[0025] The magnetic sensor chip 7 is installed inside the plug 6. The magnetic sensor chip 7 has a positioning function in conjunction with an external magnetic field.

[0026] When using this drainage catheter, the hollow support wire 2 is inserted into the drainage tube 1. Since the plug 6 and the magnetic sensing chip 7 are located at the far end of the hollow support wire 2, the magnetic sensor is located at the far end of the drainage tube 1. By applying a magnetic field outside the human body, the relative position of the magnetic sensing chip 7 inside the human body can be displayed in real time on the magnetic sensing host 10, which is more conducive to accurately delivering the drainage tube 1 to the predetermined position in the human body.

[0027] During surgery using this drainage catheter, there is no need to rely on a computed tomography (CT) scanner. This not only reduces the number of professionals required to operate the equipment and lowers the qualification threshold for surgery, but also avoids the damage to the human body caused by radiation from the scanning equipment. Secondly, the doctor can observe the distal position and insertion depth of the drainage tube 1 in real time during the operation, which helps to reduce the intraoperative time and improve the efficiency of the operation.

[0028] The distal end of the plug 6 has a polygonal or elliptical cross-section. In this embodiment, during the insertion of the drainage catheter into the drainage tube 1, the plug 6 enters the drainage tube 1 first. The distal end of the plug 6 has a non-circular cross-section. Specifically, the distal end of the plug 6 has a polygonal (e.g., quadrilateral, pentagonal, hexagonal, etc.) or elliptical cross-section, which reduces the contact area between the distal end of the plug 6 and the inner wall of the drainage tube 1. This reduces the sliding friction between the plug 6 and the drainage tube 1 during relative displacement, making the insertion or removal of the drainage catheter into or out of the drainage tube 1 smoother and improving surgical efficiency.

[0029] The plug 6 has an axial groove that extends along the axial direction of the plug 6, and the magnetic sensing chip 7 is installed in the axial groove of the plug 6. In this embodiment, the magnetic sensing chip 7 is installed in the axial groove of the plug 6 so that the plug 6 can provide better protection for the magnetic sensing chip 7.

[0030] The plug 6 is also provided with a radial groove, which extends along the radial direction of the plug 6 and intersects with the axial groove.

[0031] A locking block 61 is installed in the radial groove of the plug 6; after the magnetic sensing chip 7 is inserted into the axial groove of the plug 6, the locking block 61 is installed in the radial groove so that the locking block 61 blocks the end of the axial groove, so as to fix the magnetic sensing chip 7 in the plug 6 by the locking block 61.

[0032] In this embodiment, the radial groove is located at the end of the axial groove. First, the magnetic sensing chip 7 is inserted into the axial groove of the plug 6 along the axial direction. Then, the locking block 61 is inserted into the radial groove of the plug 6 along the radial direction, so that the locking block 61 can be sealed at the end of the axial groove, thereby fixing the magnetic sensing chip 7 in the axial groove of the plug 6.

[0033] The cross-section of the locking block 61 is C-shaped. The C-shaped locking block 61 can be more stably and firmly locked in the radial groove of the plug 6, thereby ensuring the stability of the magnetic sensing chip 7 and the plug 6.

[0034] In other embodiments, the magnetic sensing chip 7 can also be fixed in the axial groove of the plug 6 with medical adhesive; or, the magnetic sensing chip 7 can be fixed in the axial groove of the plug 6 by a tension fit; or, the magnetic sensing chip 7 can be fixed on the plug 6 by welding; in these other embodiments, it is not necessary to provide radial grooves and locking blocks 61 on the plug 6.

[0035] A wire harness 4 is also connected to the magnetic sensing chip 7, and the wire harness 4 passes through the hollow support wire 2; a clearance groove is provided on the locking block 61, and when the locking block 61 is locked in the radial groove, the wire harness 4 passes through the clearance groove on the locking block 61. In this embodiment, the wire harness 4 supplies power to the magnetic sensing chip 7 and transmits the position signal of the magnetic sensing chip 7.

[0036] The end of the wiring harness 4 furthest from the magnetic sensing chip 7 is connected to a board-side connector 5, which is used for electrical connection to the magnetic sensing host 10. In this embodiment, the magnetic sensing chip 7 is electrically connected to the board-side connector 5 via the wiring harness 4. The board-side connector 5 can quickly connect to the magnetic sensing host 10, and the magnetic sensing host 10 can display the human body position, the magnetic sensing chip 7 (i.e., the position of the distal end of the drainage catheter), the insertion depth of the distal end of the drainage catheter, and the position of the target point in the body on its screen.

[0037] The drainage catheter also includes a strength support wire 8, which is a hollow structure and is disposed between the hollow support wire 2 and the wire harness 4. In this embodiment, the strength support wire 8 is disposed inside the hollow support wire 2, which helps to improve the overall structural strength of the drainage catheter. The wire harness 4 is disposed inside the strength support wire 8, so that the wire harness 4 can be well protected by the strength support wire 8.

[0038] In this embodiment, the length of the wire harness 4 is longer than that of the hollow support wire 2, and the length of the hollow support wire 2 is longer than that of the strength support wire 8.

[0039] The drainage catheter also includes a knurled handle 3. The proximal ends of the hollow support wire 2 and the strength support wire 8 are both mounted on the knurled handle 3, and the wire harness 4 passes through the knurled handle 3. In this embodiment, the knurled handle 3 is provided at the proximal ends of the hollow support wire 2 and the strength support wire 8. By pushing and pulling the knurled handle 3, the hollow support wire 2 can be moved back and forth, making it easier to operate the drainage catheter.

[0040] The encapsulation method for the above-mentioned magnetic sensing real-time navigation drainage catheter specifically includes the following steps: Step 1: Connect the magnetic sensing chip 7 to the far end of the wire harness 4, and then pass the magnetic sensing chip 7 through the wire harness 4 into the hollow support wire 2. Step 2: Insert the magnetic sensing chip 7, which passes through the hollow support wire 2, into the axial groove of the plug 6, and then insert the locking block 61 into the radial groove of the plug 6 to fix the magnetic sensing chip 7 in the plug 6. Step 3: Apply medical glue to the outside of the plug 6, insert the plug 6 into the distal end of the hollow support wire 2 to fix the plug 6 to the distal end of the hollow support wire 2, thereby sealing the distal end of the hollow support wire 2. Step 4: Apply medical adhesive to the periphery of the strength support wire 8, then insert the strength support wire 8 from the proximal end of the wire harness 4, and insert the strength support wire 8 along the wire harness 4 into the interior of the hollow support wire 2 to seal the proximal end of the hollow support wire 2. Step 5: Apply medical glue to the outer ring near the end of the hollow support wire 2, and insert the knurled handle 3 through the near end of the wire harness 4 to fix the knurled handle 3 to the near end of the hollow support wire 2. Step 6: Connect the plate-side plug 5 to the proximal end of the wire harness 4 to complete the encapsulation of the drainage catheter; Step 7: Insert the assembled drainage tube into drainage tube 1 for use.

[0041] When the drainage catheter is fully encapsulated and ready for use, the doctor completes a series of pre-operative procedures (the fixation sheath 9 is already inserted into the body). First, the board-side plug 5 is connected to the magnetic sensor host 10. The magnetic sensor host 10 has an external magnetic field positioning function, forming a real-time magnetic sensor navigation drainage catheter system in conjunction with the magnetic sensor chip 7. The screen of the magnetic sensor host 10 displays the body's position, the distal position of the drainage catheter, the distal insertion depth of the drainage catheter, and the position of the target point inside the body. The doctor then simply inserts the drainage catheter connected to the drainage tube 1 into the central hole of the fixation sheath 9, slowly inserting it downwards along the central hole. Simultaneously, the screen of the magnetic sensor host 10 displays the distance between the distal end of the drainage catheter and the target point, as well as the insertion depth of the distal end of the drainage catheter. When the distal end of the drainage catheter and the target point coincide, the drainage insertion is complete. After removing the hollow support wire 2, the doctor proceeds to the subsequent surgical procedures.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A magnetically sensed real-time navigation drainage catheter, characterized in that, The drainage catheter includes: Hollow support wire, wherein the hollow support wire has a hollow structure and the outer diameter of the hollow support wire is smaller than the inner diameter of the drainage tube; A plug is placed at the distal end of a hollow support wire, and the outer diameter of the plug is smaller than the inner diameter of the drainage tube; the cross-section of the distal end of the plug exposed above the hollow support wire is a non-circular structure. A magnetic sensing chip is installed inside the plug, and the magnetic sensing chip has a positioning function in conjunction with an external magnetic field.

2. The magnetic sensing real-time navigation drainage catheter according to claim 1, characterized in that, The cross-section of the distal end of the plug is polygonal or elliptical.

3. The magnetic sensing real-time navigation drainage catheter according to claim 1, characterized in that, The plug is provided with an axial groove that extends along the axial direction of the plug, and the magnetic sensing chip is installed in the axial groove of the plug.

4. The magnetic sensing real-time navigation drainage catheter according to claim 3, characterized in that, The plug is also provided with a radial groove, which extends along the radial direction of the plug and intersects with the axial groove.

5. The magnetically sensed real-time navigation drainage catheter according to claim 4, characterized in that, A locking block is installed in the radial groove of the plug; after the magnetic sensing chip is inserted into the axial groove of the plug, the locking block is installed in the radial groove so that the locking block blocks the end of the axial groove, thereby fixing the magnetic sensing chip in the plug; the cross-section of the locking block is C-shaped.

6. The magnetically sensed real-time navigation drainage catheter according to claim 3, characterized in that, The magnetic sensing chip is fixed in the axial groove of the plug with medical adhesive.

7. The magnetically sensed real-time navigation drainage catheter according to claim 3, characterized in that, The magnetic sensing chip is fixedly installed in the axial groove of the plug by a tension fit.

8. The magnetically sensed real-time navigation drainage catheter according to claim 7, characterized in that, The magnetic sensing chip is also connected to a wire harness, which passes through the hollow support wire; the card block is provided with a clearance groove, and when the card block is stuck in the radial groove, the wire harness passes through the clearance groove on the card block. The end of the wiring harness away from the magnetic sensing chip is connected to a board-side plug, which is used for electrical connection to the magnetic sensing host.

9. The magnetic sensing real-time navigation drainage catheter according to claim 8, characterized in that, The drainage conduit also includes a strength support wire, which is a hollow structure and is disposed between the hollow support wire and the wire harness.

10. The magnetically sensing real-time navigation drainage catheter according to claim 9, characterized in that, The drainage catheter also includes a knurled handle, and the proximal ends of the hollow support wire and the strength support wire are both mounted on the knurled handle, with the wire harness passing through the knurled handle.

Images