Magnetic control urinary system and magnetic control catheter thereof

Abstract

The application relates to a magnetic control urination system and a magnetic control catheter thereof, the magnetic control catheter comprising a catheter main body and a magnetic control valve, the magnetic control valve comprising a sealing piece and a first magnetic bead, the sealing piece being in sealing connection with the proximal end of the catheter main body, the sealing piece being provided with a fluid passage, the first magnetic bead being arranged on one side of the sealing piece or in the interior of the sealing piece, the first magnetic bead being used for plugging or conducting the fluid passage under the action of a magnetic field, the sealing piece being provided with a limiting portion configured to limit the first magnetic bead from moving out of the distal end of the sealing piece. The magnetic control urination system and the magnetic control catheter thereof have the advantages that the first magnetic bead cannot move out of the distal end of the sealing piece under the limitation of the limiting portion, and therefore cannot enter the distal end of the catheter main body along the catheter main body, so that when the inner diameter of the catheter main body is configured, there is no concern that the first magnetic bead enters the distal end of the catheter main body, and then the catheter main body can be selected to have a relatively large inner diameter, so that the flow of the catheter main body is improved, the urination rate is improved, and the urination time is shortened.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a magnetically controlled urination system and its magnetically controlled catheter. Background Technology

[0002] A urinary catheter is a device inserted into the bladder through the urethra to drain urine. It is widely used for patients with urinary retention or bladder outlet obstruction, urinary incontinence, etc.

[0003] In related technologies, most urinary catheters are Foley catheters, which are partially implanted in the body and partially exposed outside the body, and are used in conjunction with a urine bag. However, this type of catheter has the following problems:

[0004] ① If the catheter is exposed outside the body, it can easily lead to urinary tract infections;

[0005] ② Carrying a urine bag restricts the patient's normal work and social life, making it impossible to carry out many activities.

[0006] To address this, the industry has proposed internal urinary catheters. However, as implants, internal urinary catheters need to be inserted into the intended location using a delivery system, and the implanted portion needs to be separated from the delivery system after implantation. In related technologies, internal urinary catheters use a controllable catheter magnetic valve to control opening and closing. However, to prevent the magnetic bead from migrating into the catheter body, the inner diameter of the catheter body needs to be smaller than the diameter of the magnetic bead. This results in low flow rate and prolonged urination time. Summary of the Invention

[0007] Based on this, a magnetically controlled urination system and its magnetically controlled catheter are provided to solve the problem that the inner diameter of an internal urinary catheter is limited by the diameter of the magnetic bead, resulting in a small flow rate and a long urination time.

[0008] On one hand, the present invention provides a magnetically controlled catheter, comprising:

[0009] Catheter body;

[0010] A magnetically controlled valve includes a seal and a first magnetic bead. The seal is sealed to the proximal end of a conduit body and has a fluid passage communicating with the conduit body. The first magnetic bead is disposed on one side of the seal or inside the seal and is used to block or open the fluid passage under the action of a magnetic field. The seal is provided with a limiting portion configured to restrict the first magnetic bead from moving out of the distal end of the seal.

[0011] In one embodiment, the magnetic valve includes a second magnetic bead, and the fluid channel has a first blocking position and a second blocking position spaced apart from each other along its axial direction. The first magnetic bead is located on the side of the first blocking position opposite to the second blocking position and is used to block the first blocking position. The second magnetic bead is located on the side of the second blocking position opposite to the first blocking position and is used to block the second blocking position.

[0012] In one embodiment, both the first and second plug positions are funnel-shaped along the axial direction of the fluid channel.

[0013] In one embodiment, the magnetic valve includes a proximal locking seat connected to the proximal end of the seal, the proximal locking seat having a limiting structure for restricting the second magnetic bead from moving out of the proximal end of the catheter body.

[0014] In one embodiment, the seal and the proximal locking seat are respectively provided with a first locking protrusion and a second locking protrusion on their periphery, and the inner wall of the catheter body is provided with a first locking groove and a second locking groove, wherein the first locking groove is adapted to the first locking protrusion and the second locking groove is adapted to the second locking protrusion.

[0015] On the other hand, the present invention provides a magnetically controlled urination system, including a delivery device and the aforementioned magnetically controlled catheter, wherein the delivery device is used to deliver and release the magnetically controlled catheter.

[0016] In one embodiment, the distal end of the catheter body is connected to a distal locking seat, the delivery device includes a locking sleeve, a delivery tube and a locking wire, the locking sleeve is movably inserted through the delivery tube, the distal end of the locking sleeve is clearance-fitted with the distal locking seat, and the locking wire is configured to apply a proximal traction force to the distal locking seat.

[0017] In one embodiment, the conveying device includes a handle connected to the proximal end of the conveying tube and used to operate a locking sleeve to move axially relative to the conveying tube. Both ends of the locking wire pass through the locking sleeve and are fixed to the handle. The handle is configured to release the fixation of one end of the locking wire.

[0018] In one embodiment, the delivery device includes a connecting block, the proximal end of which is connected to the delivery tube, and the distal end of which is detachably connected along the axial direction of the delivery tube to the proximal end of the magnetically controlled conduit.

[0019] In one embodiment, the distal end of the connecting block is formed with a plug-in portion, and the proximal locking seat of the magnetic valve is provided with a plug-in hole, the plug-in portion cooperating with the plug-in hole.

[0020] In one embodiment, the delivery device includes a lanyard configured to apply a proximal traction force to the proximal locking seat of the magnetic valve, such that the proximal end of the magnetic conduit remains relatively fixed to the distal end of the delivery tube, and when the lanyard releases the traction on the proximal locking seat, the magnetic conduit can be axially separated from the distal end of the delivery tube.

[0021] In one embodiment, the delivery pipe has a perforation, the locking sleeve passes through the proximal locking seat, the lanyard passes through the perforation on the delivery pipe and is connected to form a loop, the loop is configured to fit around the locking sleeve and limit the proximal locking seat to the distal end of the connecting block, and when the locking sleeve moves proximal to the distal end of the delivery pipe, the loop peels off from the distal end of the locking sleeve, so that the lanyard releases the traction on the proximal locking seat.

[0022] In one embodiment, the distal end of the connecting block is provided with a mating portion, which is interference-fitted with the catheter body.

[0023] The aforementioned magnetically controlled urination system and its magnetically controlled catheter include a catheter body and a magnetically controlled valve. The magnetically controlled valve includes a seal and a first magnetic bead. The seal is sealed to the proximal end of the catheter body and has a fluid channel communicating with the catheter body. The first magnetic bead is disposed on one side of the seal or inside the seal. The first magnetic bead is used to block or open the fluid channel under the action of a magnetic field. A limiting part is formed at the distal end of the seal, which restricts the first magnetic bead from moving out of the distal end of the seal, thus preventing it from entering the distal end of the catheter body. Therefore, when configuring the inner diameter of the catheter body, there is no concern about the first magnetic bead entering the distal end of the catheter body. Consequently, a relatively large inner diameter of the catheter body can be selected to increase the flow rate of the catheter body, thereby increasing the urination rate and shortening the urination time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a magnetically controlled urination system according to an embodiment of the present invention;

[0026] Figure 2 A schematic cross-sectional view of the magnetically controlled conduit of a magnetically controlled urination system according to one embodiment;

[0027] Figure 3 A cross-sectional structural schematic diagram of a magnetically controlled urination system according to one embodiment;

[0028] Figure 4 for Figure 3 A partially enlarged schematic diagram of the structure of part A in the diagram;

[0029] Figure 5 A schematic cross-sectional view of the sealing element in a magnetically controlled conduit according to one embodiment;

[0030] Figure 6 A schematic diagram of the distal portion of a magnetically controlled urination system according to one embodiment;

[0031] Figure 7 A schematic diagram of the delivery device of a magnetically controlled urine extraction system according to one embodiment;

[0032] Figure 8 for Figure 6 A partially enlarged schematic diagram of the structure of part B in the diagram;

[0033] Figure 9 This is a three-dimensional structural diagram of the distal locking seat in a magnetically controlled urination system according to one embodiment.

[0034] Figure label:

[0035] 10. Magnetically controlled conduit; 11. Conduit body; 11a. First slot; 11b. Second slot; 111. Proximal end of conduit body; 112. Distal end of conduit body; 12. Magnetically controlled valve; 121. Seal; 121a. Fluid passage; 121b. Inverted cone structure; 121c. Flow limiting ring; 121d. First locking protrusion; 122. First magnetic bead; 123. Second magnetic bead; 124. First sealing position; 125. Second sealing position; 126. Proximal lock 126a, limiting structure; 126b, second locking protrusion; 126c, insertion hole; 13, remote locking seat; 13a, insertion hole; 13b, crossbeam; 20, conveying device; 20a, Luer male connector; 20b, rear shell; 21, locking sleeve; 22, conveying pipe; 23, locking screw; 24, handle; 25, fixing part; 26, connecting block; 26a, insertion part; 26b, mating part; 27, loop; 28, locking cap; 29, male plug. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0038] The terms “vertical,” “horizontal,” “up,” “down,” “left,” “right,” and similar expressions are for illustrative purposes only and do not represent the only possible implementation.

[0039] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] In this embodiment of the invention, the proximal end is the end of the medical device that is closer to the operator (e.g., a doctor), and the distal end is the end of the medical device that is farther away from the operator.

[0041] See Figure 1 As shown, an embodiment of the present invention provides a magnetically controlled urination system, including a magnetically controlled catheter 10 and a delivery device 20. The magnetically controlled catheter 10 is an implant that can be delivered to the implantation position and released under the action of the delivery device 20.

[0042] Combination Figure 2 As shown, the magnetically controlled catheter 10 includes a catheter body 11 and a magnetically controlled valve 12. The magnetically controlled valve 12 is disposed within the catheter body 11 and is located at the proximal end 111 of the catheter body 11.

[0043] It should be noted that after the magnetically controlled catheter 10 is implanted in the body, during the drainage process (such as urine), the fluid flows from the distal end 112 of the catheter body 11 into the catheter body 11, and then flows through the catheter body 11 into the proximal magnetically controlled valve 12. When the magnetically controlled valve 12 is opened, the fluid flows out from the proximal end 111 of the catheter body 11.

[0044] Combination Figure 3 and Figure 4As shown, the magnetic valve 12 includes a seal 121 and a first magnetic bead 122. The seal 121 is sealed to the proximal end 111 of the catheter body 11, and the seal 121 has a fluid passage 121a communicating with the catheter body 11. In this magnetic valve 12, the catheter body 11 is opened or closed by controlling the first magnetic bead 122 to block or open the fluid passage 121a.

[0045] Specifically, the first magnetic bead 122 is disposed on one side of the sealing member 121 or inside the sealing member 121, and is used to block the fluid channel 121a under the action of a magnetic field, so that the magnetic control valve 12 is in the closed state. At this time, the magnetic control catheter 10 with the magnetic control valve 12 will not leak liquid. Correspondingly, when the first magnetic bead 122 releases the blockage of the fluid channel 121a, so that the magnetic control valve 12 is in the open state, the magnetic control catheter 10 implanted in the body can meet the drainage needs.

[0046] Furthermore, combined Figure 5 As shown, the distal end of the seal 121 has an inverted conical structure 121b. This inverted conical structure 121b prevents the first magnetic bead 122 from moving out of the distal end of the seal 121, and thus also prevents it from entering the distal end 112 of the catheter body 11 along the catheter body 11. Therefore, when configuring the inner diameter of the catheter body 11, there is no concern about the first magnetic bead 122 entering the distal end 112 of the catheter body 11. That is, the inner diameter of the catheter body 11 does not need to take into account the diameter of the first magnetic bead 122. Consequently, the catheter body 11 can be selected with a relatively large inner diameter, for example, the inner diameter of the catheter body 11 is larger than the diameter of the first magnetic bead 122, thereby increasing the flow rate of the catheter body 11, thereby increasing the urination rate and shortening the urination time. The cross-section of the inverted conical structure 121b gradually increases from the proximal end to the distal end.

[0047] In some embodiments, the structure for restricting the first magnetic bead 122 from moving out of the distal end of the seal 121 is not limited to the inverted cone structure 121b. Specifically, the seal 121 is provided with a limiting portion including, but not limited to, the aforementioned inverted cone structure 121b, which is configured to restrict the first magnetic bead 122 from moving out of the distal end of the seal 121. Since the seal 121 is sealed to the proximal end 111 of the catheter body 11, under the action of the limiting portion, the first magnetic bead 122 will not move out of the distal end of the seal 121, nor will it enter the human body along the catheter body 11. That is to say, when setting the inner diameter of the catheter body 11, there is no need to consider the aperture of the first magnetic bead 122, and the inner diameter of the catheter body 11 can be made large enough to improve urination efficiency.

[0048] The limiting part can be a filter screen, thus both limiting the first magnetic bead 122 and not obstructing the flow when the magnetic control valve 12 connects to the conduit body 121. In some embodiments, the limiting part can also be a bracket with a hole, the diameter of which is smaller than the diameter of the first magnetic bead 122, thereby limiting the first magnetic bead 122. At the same time, the hole of the bracket can also meet the liquid flow requirements when the magnetic control valve 12 connects to the conduit body 121. The structures of the limiting part will not be listed one by one here.

[0049] It should be noted that the sealing element 121 can be disposed on the outside of the catheter body 11, providing a sealing effect at the proximal end 111 of the catheter body 11. In some embodiments, the sealing element 121 can also be disposed inside the catheter body 11; specifically, the sealing element 121 is sealed to the inner wall of the catheter body 11. In this case, the magnetic valve 12 can be considered to be entirely disposed within the lumen of the catheter body 11. In this embodiment, the portion of the catheter body 11 used to house the magnetic valve 12 can be configured to have a larger diameter relative to other portions of the catheter body 11, so that while accommodating the magnetic valve 12, the other portions of the catheter body 11 can maintain a sufficiently large inner diameter to increase the flow rate of the catheter body 11, thereby increasing the urination rate.

[0050] In some embodiments, the fluid channel 121a of the seal 121 is provided with two or more sealing positions, and corresponding magnetic beads are provided to facilitate the magnetic beads to seal the corresponding sealing positions, thereby improving the sealing effect of the seal 121 and effectively preventing leakage.

[0051] To make it easier to understand, the following will be combined with... Figure 4 As shown, taking the magnetic control valve 12, which includes a first magnetic bead 122 and a second magnetic bead 123, as an example, the structure of the magnetic control valve 12 will be further explained.

[0052] Specifically, in an embodiment where the magnetic valve 12 includes a first magnetic bead 122 and a second magnetic bead 123, a first blocking position 124 and a second blocking position 125 spaced apart along the axial direction of the fluid channel 121a are provided. The axial direction of the fluid channel 121a refers to the flow direction of the liquid flowing through the fluid channel 121a. Thus, in this embodiment, the first blocking position 124 and the second blocking position 125 are spaced apart along the path of the flow channel 121a for liquid to pass through. If either the first blocking position 124 or the second blocking position 125 is blocked, the liquid will be restricted from passing through the flow channel 121a. Figure 4As shown, the first magnetic bead 122 is located on the side of the first blocking position 124 opposite to the second blocking position 125, and is used to block the first blocking position 124. The second magnetic bead 123 is located on the side of the second blocking position 125 opposite to the first blocking position 124, and is used to block the second blocking position 125. In this embodiment, by using the first magnetic bead 122 and the second magnetic bead 123 to block the first blocking position 124 and the second blocking position 125 respectively, the fluid channel 121a is closed, and the magnetic control valve 12 is in the closed state.

[0053] It should be noted that the first magnetic bead 122 and the second magnetic bead 123 move relative to the sealing element 121 under the action of a magnetic field to open the magnetic control valve 12. Specifically, when an external magnetic field is applied, the first magnetic bead 122 and the second magnetic bead 123 of the magnetic control valve 12 will simultaneously shift to the valve open position. At this time, the first magnetic bead 122 moves away from the first sealing position 124, and the second magnetic bead 123 moves away from the second sealing position 125, allowing the fluid passage 121a to adapt to the liquid flow requirements. When the external magnetic field is removed, the first magnetic bead 122 and the second magnetic bead 123 attract each other, and both the first magnetic bead 122 and the second magnetic bead 123 will abut against the sealing element 121. More precisely, the first magnetic bead 122 abuts against the first sealing position 124, and the second magnetic bead 123 abuts against the second sealing position 125, causing the fluid passage 121a to close. At this time, the magnetic control valve 12 is in the closed state. Since the first sealing position 124 and the second sealing position 125 of the sealing element 121 are blocked by the first magnetic bead 122 and the second magnetic bead 123 respectively, the overall sealing effect of the fluid channel 121a is good, reducing the probability of leakage.

[0054] It should be noted that in this embodiment, when the external magnetic field is removed, the first magnetic bead 122 and the second magnetic bead 123 attract each other and both the first magnetic bead 122 and the second magnetic bead 123 will abut against the sealing member 121 to seal the first sealing position 124 and the second sealing position 125 respectively. Therefore, there is no need to continuously apply a magnetic field from the outside. The magnetically controlled conduit 10 can be kept in a normally closed state. The magnetic field is only applied to open the magnetic valve 12 when urinating. Therefore, adopting the magnetically controlled conduit 10 of the present invention is beneficial to saving magnetic energy, that is, reducing the overall power consumption of the magnetically controlled conduit 10, and is beneficial to extending the battery life during use.

[0055] Combination Figure 5As shown, in some embodiments, a portion of the structure of the fluid channel 121a is formed by a flow-limiting ring 121c. Specifically, the central hole of the flow-limiting ring 121c is part of the flow path of the fluid channel 121a. In this embodiment, the first blocking position 124 and the second blocking position 125 can be formed on the distal end face and proximal end face of the flow-limiting ring 121c, respectively. Thus, whether the first magnetic bead 122 blocks the first blocking position 124 or the second magnetic bead 123 blocks the second blocking position 125, the central hole of the flow-limiting ring 121c can be sealed, achieving the effect of blocking the fluid channel 121a.

[0056] It should be noted that the fluid channel 121a is provided with two or more flow-limiting rings 121c spaced apart from each other, and the first sealing position 124 and the second sealing position 125 can also be formed on the proximal end face or the distal end face of different flow-limiting rings 121c.

[0057] In some embodiments, both the first sealing position 124 and the second sealing position 125 are funnel-shaped along the axial direction of the fluid channel 121a. Specifically, the diameter of the fluid channel 121a corresponding to the first sealing position 124 gradually decreases in the direction away from the first magnetic bead 122, and the diameter of the fluid channel 121a corresponding to the second sealing position 125 gradually decreases in the direction away from the second magnetic bead 123. This structural arrangement allows the first sealing position 124 and the second sealing position 125 to guide the corresponding first magnetic bead 122 and second magnetic bead 123.

[0058] Specifically, when the valve needs to be closed, this funnel-shaped structure can guide the first magnetic bead 122 and the second magnetic bead 123 to roll to the position that blocks the fluid passage 121a, that is, the first magnetic bead 122 blocks the first blocking position 124 and the second magnetic bead 123 blocks the second blocking position 125, thereby ensuring that the magnetic control valve 12 can be successfully closed every time.

[0059] See again Figure 4 As shown, the magnetic valve 12 includes a proximal locking seat 126, which is made of a rigid material, such as thermosetting plastic, or metal materials such as aluminum, copper or stainless steel.

[0060] The proximal locking seat 126 is provided with a limiting structure 126a, which is used to restrict the second magnetic bead 123 from moving out of the proximal end 111 of the catheter body 11.

[0061] In some embodiments, the proximal locking seat 126 is connected to the proximal end of the seal 121, for example, the proximal locking seat 126 is threaded or snap-fitted to the seal 121. The limiting structure 126a is located at the proximal end of the second magnetic bead 123, such that the second magnetic bead 123 is limited between the second sealing position 125 and the limiting structure 126a, preventing the second magnetic bead 123 from falling out of the magnetic control valve 12, thereby reducing the probability of the second magnetic bead 123 failing to seal the second sealing position 125.

[0062] The main body of the proximal locking seat 126 can be tubular, and the limiting structure 126a can be a protrusion protruding from the inner wall of the main body.

[0063] The sealing element 121 and the proximal locking seat 126 are respectively provided with a first locking protrusion 121d and a second locking protrusion 126b on their periphery. The inner wall of the conduit body 11 is provided with a first locking groove 11a and a second locking groove 11b, wherein the first locking groove 11a is adapted to the first locking protrusion 121d, and the second locking groove 11b is adapted to the second locking protrusion 126b. In this embodiment, by utilizing the first locking protrusion 121d and the second locking protrusion 126b to cooperate with the first locking groove 11a and the second locking groove 11b respectively, the sealing element 121 and the proximal locking seat 126 are stably connected in the conduit body 11 to complete the installation of the magnetic valve 12 and prevent the magnetic valve 12 from falling off the conduit body 11.

[0064] It should be noted that, since the proximal locking seat 126 is connected to the seal 121, either of them, when connected to the catheter body 11, can effectively stabilize the connection between the magnetic valve 12 and the catheter body 11. That is, the first locking protrusion 121d and the second locking protrusion 126b can be located on the seal 121 and the proximal locking seat 126 respectively, or both can be located on the seal 121, or both can be located on the proximal locking seat 126. The connection method between the seal 121 and the proximal locking seat 126 of the magnetic valve 12, and the connection method between the magnetic valve 12 and the catheter body 11, are not limited here. For example, in some embodiments, at least one of the seal 121 and the proximal locking seat 126 is bonded to the catheter body 11 with adhesive.

[0065] Combination Figure 2 and Figure 6 As shown, a distal locking seat 13 is connected to the distal end 112 of the catheter body 11. Specifically, the distal locking seat 13 is located inside the catheter body 11 and is fixed to the distal end 112 of the catheter body 11.

[0066] The distal locking seat 13 has a certain connection strength with the catheter body 11, and will not separate from the catheter body 11 under applied force. In this way, when the distal end of the magnetically controlled catheter 10 is fixed with the delivery device 20, it effectively ensures that no accidental separation will occur during the operation.

[0067] Combination Figure 7 and Figure 8 As shown, the conveying device 20 includes a locking sleeve 21, a conveying pipe 22, and a locking wire 23.

[0068] The locking sleeve 21 is movably inserted through the delivery pipe 22, and the distal end of the locking sleeve 21 is clearance-fitted with the distal locking seat 13. In some embodiments, the distal locking seat 13 has an insertion hole 13a, the distal end of the locking sleeve 21 is received in the insertion hole 13a, and can be removed from the insertion hole 13a.

[0069] In this embodiment, the locking wire 23 is configured to apply a traction force toward the proximal end to the distal locking seat 13. Specifically, in conjunction with Figure 9 As shown, the distal locking seat 13 has a crossbeam 13b, and the locking wire 23 passes around the crossbeam 13b of the distal locking seat 13. In this way, the locking wire 23 applies a force toward the proximal end to the crossbeam 13b, so that the distal locking seat 13 and the distal end of the locking sleeve 21 are stably engaged. Then, the relative fixation between the distal locking seat 13 and the catheter body 11 makes the magnetically controlled catheter 10 stably connected to the delivery device 20.

[0070] It should be noted that the conveying device 20 includes a handle 24, which is connected to the proximal end of the conveying pipe 22 and is used to operate the locking sleeve 21 to move axially relative to the conveying pipe 22.

[0071] In some embodiments, both ends of the locking wire 23 pass through the locking sleeve 21. After exiting from the proximal end of the locking sleeve 21, both ends of the locking wire 23 are fixed to the handle 24. The handle 24 is configured to release the fixation of one end of the locking wire 23. For example, the handle 24 is provided with a fixing member 25 such as a rotating device or a clamping device, which is used to fix both ends of the locking wire 23. When separation is required, the fixing member 25 is loosened to release one end of the locking wire 23, while the other end remains fixed to the fixing member 25. Then, the fixing member 25 is pulled proximally to pull out the locking wire 23, thereby releasing the locking wire 23 from the distal locking seat 13. Subsequently, the distal end 112 of the catheter body 11 can be separated from the locking sleeve 21, achieving the purpose of releasing the magnetically controlled catheter 10.

[0072] The conveying device 20 includes a connecting block 26, the proximal end of which is connected to the conveying pipe 22. The connection between the proximal end of the connecting block 26 and the conveying pipe 22 can be a snap-fit ​​connection or a threaded connection, which is not limited here.

[0073] The distal end of the connecting block 26 is detachably connected to the proximal end of the magnetically controlled conduit 10 along the axial direction of the delivery pipe 22. This detachable connection means that the connecting block 26 and the magnetically controlled conduit 10 remain connected under a restraining force, and when the restraining force is removed, the connecting hole 26 and the magnetically controlled conduit 10 can be axially separated.

[0074] In some embodiments, the distal end of the connecting block 26 cooperates with the limiting structure 126a of the proximal locking seat 126 to improve the connection stability between the proximal end of the magnetically controlled conduit 10 and the delivery device 20.

[0075] Furthermore, the distal end of the connecting block 26 has a plug-in portion 26a, and the proximal locking seat 126 has a corresponding plug-in hole 126c that mates with the plug-in portion 26a. This combination of the plug-in portion 26a and the plug-in hole 126c enhances the connection stability between the distal end of the connecting block 26 and the proximal locking seat 126. The cross-section of the plug-in portion 26a can be semi-circular, a sector with a central angle of 30°, 40°, or 70°, or other shapes, which are not limited here.

[0076] In some embodiments, the delivery device 20 includes a loop 27 configured to apply a proximal traction force to the proximal locking seat 126 of the magnetic valve 12, thereby keeping the proximal end of the magnetic conduit 10 and the distal end of the delivery tube 22 relatively fixed. Specifically, the proximal end of the magnetic conduit 10 is confined to the distal end of the delivery tube 22 both axially and radially, preventing relative movement between them. Since the locking force that fixes the relative position between the magnetic conduit 10 and the delivery tube 22 comes from the proximal traction applied by the loop 27 to the proximal locking seat 126 of the magnetic valve 12, when the loop 27 releases its traction on the proximal locking seat 126, the magnetic conduit 10 and the delivery tube 22 are no longer constrained by the loop 27, allowing the magnetic conduit 10 to axially separate from the distal end of the delivery tube 22.

[0077] Specifically, the delivery pipe 22 has a perforation, the locking sleeve 21 passes through the near-end locking seat 126, and the loop 27 passes through the perforation on the delivery pipe 22 and is connected to form a loop. For example, the loop 27 can be folded in half and connected end to end by knotting or gluing to form a loop.

[0078] Combination Figure 4 As shown, the loop formed by the loop 27 is configured to loop around the locking sleeve 21 and limit the proximal locking seat 126 to the distal end of the connecting block 26, so as to fix the proximal end 111 of the catheter body 11 to the delivery device 20.

[0079] When it is necessary to separate the connecting block 26 from the catheter body 11, simply move the locking sleeve 21 proximally to the distal end of the delivery tube 22, so that the loop formed by the loop 27 peels off from the distal end of the locking sleeve 21, thus preventing the locking sleeve 21 from continuing to exert a traction force on the proximal locking seat 126. That is, the loop 27 releases the traction on the proximal locking seat 126. At this time, since the proximal locking seat 126 is no longer under the traction of the loop 27, when the magnetically controlled catheter 10 moves axially relative to the delivery tube 22 distally, the connecting block 26 can be separated from the proximal end 111 of the catheter body 11, thereby realizing the release of the magnetically controlled catheter 10. This operation is both simple and reliable.

[0080] In some embodiments, the distal end of the connecting block 26 is provided with a mating part 26b. The proximal locking seat 126 is pulled towards the proximal end by the loop 27, so that the catheter body 11 moves towards the proximal end with the proximal locking seat 126, thereby making the catheter body 11 engage with the mating part 26b of the connecting block 26.

[0081] Furthermore, the mating part 26b is interference-fitted with the catheter body 11, ensuring good connection stability between the proximal end 111 of the catheter body 11 and the delivery device 20.

[0082] It should be noted that the interference fit between the mating part 26b and the catheter body 11 can be a sleeve connection. Specifically, the proximal end 111 of the catheter body 11 is sleeved onto the mating part 26b of the connecting block 26. In some embodiments, the interference fit between the mating part 26b and the catheter body 11 can also be a snap-fit ​​connection. Specifically, the mating part 26b is a snap-fit ​​protrusion or a snap-fit ​​groove, and the catheter body 11 and the mating part 26b are snap-fitted together.

[0083] Combination Figure 3 and Figure 7 As shown, in some embodiments, the handle 24 is also provided with a locking cap 28. After adjusting the relative positions of the locking sleeve 21 and the delivery tube 22, the locking cap 28 is used to lock the relative positions of the two to facilitate the implantation of the magnetically controlled sleeve. Correspondingly, after the implantation of the magnetically controlled sleeve is completed, when it is necessary to release the magnetically controlled sleeve, the locking cap 28 can be operated to release the locking sleeve 21, allowing the locking sleeve 21 to be withdrawn proximally relative to the delivery tube 22.

[0084] In some embodiments, a male plug 29 is provided inside the handle 24 to seal the tubing and prevent blood from flowing out of the handle 24 during the operation. In some embodiments, the delivery device 20 may be equipped with a Luer male plug 20a or a back cover 20b, depending on actual needs. The structure of the handle 24 will not be described in detail here.

[0085] It should be noted that, in the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0087] In this invention, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A magnetically controlled catheter, characterized in that, include: Catheter body; A magnetically controlled valve includes a seal and a first magnetic bead. The seal is sealed to the proximal end of a conduit body and has a fluid channel communicating with the conduit body. The first magnetic bead is disposed inside the seal and is used to block or open the fluid channel under the action of a magnetic field. The seal has a limiting portion configured to restrict the first magnetic bead from moving out of the distal end of the seal. The magnetically controlled valve includes a second magnetic bead. The fluid channel has a first blocking position and a second blocking position spaced apart from each other along its axial direction. The first magnetic bead is located on the side of the first blocking position opposite to the second blocking position, and the second magnetic bead is located on the side of the second blocking position opposite to the first blocking position. When an external magnetic field is applied, the first magnetic bead moves away from the first blocking position, and the second magnetic bead moves away from the second blocking position. When the external magnetic field is removed, the first magnetic bead and the second magnetic bead attract each other, such that the first magnetic bead abuts against and seals the first blocking position, and the second magnetic bead abuts against and seals the second blocking position.

2. The magnetically controlled conduit according to claim 1, characterized in that, Both the first and second blocking positions are funnel-shaped along the axial direction of the fluid channel.

3. The magnetically controlled conduit according to claim 1, characterized in that, The magnetic valve includes a proximal locking seat connected to the proximal end of the seal. The proximal locking seat is provided with a limiting structure for restricting the second magnetic bead from moving out of the proximal end of the catheter body.

4. The magnetically controlled conduit according to claim 3, characterized in that, The sealing element and the proximal locking seat are respectively provided with a first locking protrusion and a second locking protrusion on their periphery. The inner wall of the catheter body is provided with a first locking groove and a second locking groove. The first locking groove is adapted to the first locking protrusion, and the second locking groove is adapted to the second locking protrusion.

5. A magnetically controlled urination system, characterized in that, The invention includes a delivery device and a magnetically controlled conduit as described in any one of claims 1-4, wherein the delivery device is used to deliver and release the magnetically controlled conduit.

6. The magnetically controlled urination system according to claim 5, characterized in that, The distal end of the catheter body is connected to a distal locking seat. The delivery device includes a locking sleeve, a delivery tube, and a locking wire. The locking sleeve is movably inserted into the delivery tube. The distal end of the locking sleeve is clearance-fitted with the distal locking seat. The locking wire is configured to apply a traction force toward the proximal end to the distal locking seat.

7. The magnetically controlled urination system according to claim 6, characterized in that, The conveying device includes a handle connected to the proximal end of the conveying tube and used to operate a locking sleeve to move axially relative to the conveying tube. Both ends of the locking wire pass through the locking sleeve and are fixed to the handle. The handle is configured to release the fixation of one end of the locking wire.

8. The magnetically controlled urination system according to claim 6, characterized in that, The delivery device includes a connecting block, the proximal end of which is connected to the delivery tube, and the distal end of which is detachably connected to the proximal end of the magnetically controlled conduit along the axial direction of the delivery tube.

9. The magnetically controlled urination system according to claim 8, characterized in that, The distal end of the connecting block has a plug-in portion, and the proximal locking seat of the magnetic valve has a plug-in hole, with the plug-in portion cooperating with the plug-in hole.

10. The magnetically controlled urination system according to claim 8 or 9, characterized in that, The delivery device includes a lanyard configured to apply a proximal traction force to the proximal locking seat of the magnetic valve, such that the proximal end of the magnetically controlled conduit remains relatively fixed to the distal end of the delivery tube, and when the lanyard releases the traction on the proximal locking seat, the magnetically controlled conduit can axially separate from the distal end of the delivery tube.

11. The magnetically controlled urination system according to claim 10, characterized in that, The delivery pipe has a perforation, the locking sleeve passes through the proximal locking seat, the rope passes through the perforation on the delivery pipe and is connected to form a loop, the loop is configured to fit around the locking sleeve and limit the proximal locking seat to the distal end of the connecting block, and when the locking sleeve moves towards the proximal end to the distal end of the delivery pipe, the loop is detached from the distal end of the locking sleeve, so that the rope releases the traction on the proximal locking seat.

12. The magnetically controlled urination system according to claim 10, characterized in that, The distal end of the connecting block is provided with a mating part, which is press-fitted with the catheter body.

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