Flow guide pipe, insertion guide pipe and in-vitro electromagnet device

Abstract

The invention discloses a flow guide tube, an insertion catheter and an in-vitro electromagnet device, the flow guide tube comprises a flow control part, the flow control part is arranged in a flow guide channel along the axial direction, the inner surface of the flow control part is provided with a flow control film, and the shape of the flow control film is variable so as to repeatedly control the flow of fluid in the flow guide channel. Compared with the prior art, the flow control part is arranged in the flow guide tube, the flow guide tube is completely arranged in a human body, a water stop clamp does not need to be arranged outside the human body to manually control a flow switch of the flow guide tube, an external device is omitted, the daily life and social activities of a patient cannot be interfered, and the urethral infection risk can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of urinary catheterization devices, in particular to a drainage tube, an insertion catheter and an extracorporeal electromagnet device. Background Art

[0002] At present, the application of indwelling catheterization technology in clinical practice can solve problems such as urinary incontinence, urinary retention, urine drainage during anesthesia surgery, and urine volume observation in critically ill patients caused by various reasons.

[0003] The existing indwelling catheterization technology consists of a through-type drainage tube inserted into the urethra and a urine bag connected to the lower end of the drainage tube. The drainage tube is inserted into the bladder through the urethra to drain urine. The drainage tube is provided with an indwelling balloon at the head end of the tube. After being expanded by water, the drainage tube can be stably retained in the bladder. The external interface can be connected to the urine bag to facilitate urine collection. The flow switch of the drainage tube is manually controlled by an external water-stop clamp.

[0004] In the prior art, the drainage tube continuously drains urine from the bladder, resulting in the inability to form normal intra-bladder pressure in the bladder. The patient's detrusor muscle and internal bladder sphincter are in a state of disuse for a long time, and the urine control principle of low-pressure urine storage and low-pressure urination cannot be used to protect the entire urinary tract system. Moreover, the through-type drainage tube is directly led out of the human bladder, increasing the risk of infection in the human bladder. Summary of the invention

[0005] The purpose of the present invention is to provide a drainage tube, an insertion catheter and an extracorporeal electromagnet device to solve the technical problems in the prior art. It can eliminate the need for an external urethral part and a urine collection bag, break through the limitations of external components of traditional drainage tubes, optimize urination control operations, and reduce the high risk of urinary tract infection caused by the invasion of external bacteria in traditional through-type drainage tubes.

[0006] In a first aspect, the present invention provides a flow guide pipe having a flow guide channel, the flow guide pipe comprising:

[0007] The flow control part is axially arranged in the flow guide channel. The inner surface of the flow control part is provided with a flow control membrane. The shape of the flow control membrane is changeable so as to repeatedly control the flow rate of the fluid in the flow guide channel.

[0008] In the flow guide tube as described above, preferably, the flow control portion has a first end and a second end, and the positions of the first end and the second end can be axially moved and / or circumferentially rotated to change the shape of the flow control membrane.

[0009] A flow guide tube as described above, wherein preferably, a containing chamber is formed in the flow control membrane, the containing chamber is filled with a pressurized medium, and the flow guide tube also includes a first movable part, the first movable part is connected to the containing chamber, and the first movable part is at least partially made of magnetic material.

[0010] In the flow guide tube as described above, preferably, the flow guide tube further includes an elastic force-applying portion, and the elastic force-applying portion is connected to the first movable portion.

[0011] In the flow guide tube as described above, preferably, the flow guide tube further includes a second fixed portion and a second movable portion, the second fixed portion is connected to the first end of the flow control portion, the second movable portion is connected to the second end of the flow control portion, the second fixed portion and the second movable portion are at least partially made of magnetic material, and under the action of external magnetic force, the second movable portion can reciprocate along a second preset moving path, wherein:

[0012] The second fixing portion includes a first fixing sub-body and a second fixing sub-body, the first fixing sub-body and the second fixing sub-body are symmetrically arranged with the axis of the first flow channel as the center line, the first fixing sub-body has a first polarity, and the second fixing sub-body has a second polarity;

[0013] The second movable part includes a first movable split body and a second movable split body, the first movable split body and the second movable split body are symmetrically arranged with the axis of the first flow channel as the center line, the first movable split body has the second polarity, and the second movable split body has the first polarity;

[0014] in:

[0015] When the second movable part is located at the starting end of the second preset moving path, in the axial direction of the first flow channel, the first fixed split body corresponds to the first movable split body, the second fixed split body corresponds to the second movable split body, the second end of the flow control part rotates by a preset angle relative to the first end, and the flow control membrane completely blocks the first flow channel;

[0016] When the second movable portion is located at the end of the second preset moving path, in the axial direction of the first flow channel, the first fixed split body corresponds to the second movable split body, the second fixed split body corresponds to the first movable split body, the extension direction of the flow control membrane is parallel to the axial direction of the first flow channel, or the flow control membrane partially blocks the first flow channel.

[0017] A flow guide tube as described above, wherein preferably, the flow guide tube comprises a first tube body, a second tube body and a third tube body connected in sequence, the flow guide channel sequentially penetrates the first tube body, the second tube body and the third tube body, the flow control portion is accommodated in the flow guide channel at the second tube body, the first tube body and the third tube body both have a basic form and an excited form, wherein:

[0018] When the ambient temperature of the first tube body and / or the third tube body is within a first interval, the first tube body and / or the third tube body is in a basic form; when the ambient temperature of the first tube body and / or the third tube body is within a second interval, the first tube body and / or the third tube body is in an excited form, and the tube diameters of the first tube body and the third tube body in the excited form are larger than those in the basic form.

[0019] In the flow guide tube as described above, preferably, the first tube body is coated with a first strip body inside, the first strip body is made of shape memory alloy, and the first strip body extends in a spiral shape along the axial direction of the first tube body.

[0020] A flow guide tube as described above, wherein preferably, the interior of the third tube body is coated with a second strip body and a first ring, the second strip body and the first ring are both made of shape memory alloy, one end of a number of the second strip bodies is connected to the first tube body, and the other ends of a number of the second strip bodies are connected to the first ring, and along the axial direction of the third tube body, the number of the second strip bodies extend linearly.

[0021] In a second aspect, the present invention provides an insertion catheter, which is applied to the aforementioned guide tube, wherein a first flow path and a second flow path are provided in the insertion catheter, wherein the first flow path forms a first outlet on the insertion catheter, and the second flow path forms a second outlet on the insertion catheter, and when the guide tube is sleeved on the insertion catheter, the first outlet is close to the first tube body of the guide tube, and the second outlet corresponds to the third tube body of the guide tube.

[0022] In a third aspect, the present invention provides an extracorporeal electromagnet device for applying external magnetic force to the aforementioned flow guide tube, wherein the working end of the extracorporeal electromagnet device is a "U"-shaped structure.

[0023] Compared with the prior art, the present invention arranges a flow control part inside the drainage tube, and the drainage tube is completely placed in the human body. There is no need to arrange a water stop clamp outside the body to manually control the flow switch of the drainage tube, thus eliminating the need for external devices, will not interfere with the patient's daily life and social activities, and can reduce the risk of urinary tract infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional diagram of the overall structure of the flow guide tube provided by an embodiment of the present invention in an unexpanded state;

[0025] Figure 2 is a three-dimensional diagram of the overall structure of the flow guide tube provided by an embodiment of the present invention in an unfolded state;

[0026] Figure 3is a schematic structural diagram of a first tube body of a flow guide tube provided by an embodiment of the present invention in an unexpanded state;

[0027] Figure 4 is a schematic structural diagram of a first tube body of a flow guide tube provided by an embodiment of the present invention in an expanded state;

[0028] Figure 5 is a schematic structural diagram of a flow control membrane of a first structure in a second tube body provided by an embodiment of the present invention when the elastic force applying part is a tension spring and is in a first posture;

[0029] Figure 6 is a schematic structural diagram of a flow control membrane of the first structure in the second tube body provided by an embodiment of the present invention when the elastic force applying part is a tension spring and is in a second posture;

[0030] Figure 7 is a structural schematic diagram of a flow control membrane of a first structure in a second tube body provided by an embodiment of the present invention when the elastic force applying part is a spring and is in a first posture;

[0031] Figure 8 is a schematic structural diagram of a flow control membrane of a first structure in a second tube body provided by an embodiment of the present invention when the elastic force applying part is a spring and is in a second posture;

[0032] Fig. 9 is a schematic structural diagram of a flow control membrane of a second structure in a second tube body provided by an embodiment of the present invention when the flow control membrane is in a first posture;

[0033] Fig.10 is a structural schematic diagram of a flow control membrane in a second tube body of a second structure provided by an embodiment of the present invention when the flow control membrane is in a second posture;

[0034] Fig.11 is a schematic structural diagram of the third tube body of the flow guide tube provided in an embodiment of the present invention in an unexpanded state;

[0035] Fig.12 is a schematic structural diagram of the third tube body of the flow guide tube provided by an embodiment of the present invention in an expanded state;

[0036] Fig.13 is a schematic structural diagram of an insertion catheter provided by an embodiment of the present invention;

[0037] Fig.14 yes Fig.13 A schematic diagram of the enlarged structure at point A;

[0038] Fig.15 yes Fig.13 AA section view;

[0039] Fig.16 yes Fig.13BB section view;

[0040] Fig.17 It is a schematic structural diagram of the corresponding positions of the insertion catheter, the bladder and the urethra provided by an embodiment of the present invention;

[0041] Fig.18 It is a schematic diagram of the structure of the insertion catheter provided by an embodiment of the present invention in a state of cooperation with a drainage tube of a structure thereof;

[0042] Fig.19 yes Fig.18 A schematic diagram of the enlarged structure at B;

[0043] Fig. 20 yes Fig.18 A schematic diagram of the enlarged structure at C;

[0044] Fig.21 It is a schematic diagram of the structure of the insertion catheter provided by an embodiment of the present invention in a state of cooperation with a drainage tube of a structure thereof;

[0045] Fig. 22 of Fig.21 A schematic diagram of the structure at D of FIG.

[0046] Fig.23 yes Fig.21 A schematic diagram of the structure at E of FIG.

[0047] Fig.24 It is a stereoscopic diagram of an extracorporeal electromagnet device provided by an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 100-flow guide tube, 101-first tube body, 1011-first strip body, 102-second tube body, 103-third tube body, 1031-second strip body, 1032-first ring, 1001-flow guide channel;

[0050] 11-flow control part, 111-first flow channel, 112-flow control membrane, 113-accommodating chamber;

[0051] 12- first fixing portion;

[0052] 13-First activity section;

[0053] 14- elastic force applying part;

[0054] 15-second fixed part, 151-first fixed part, 152-second fixed part;

[0055] 16-second movable part, 161-first movable part, 162-second movable part;

[0056] 17- a first blocking portion;

[0057] 18- second blocking portion;

[0058] 200 - insertion catheter, 201 - first flow path, 2011 - first outlet, 2012 - first inlet, 202 - second flow path, 2021 - second outlet, 2022 - second inlet, 203 - third flow path, 2031 - third outlet, 2032 - third inlet, 204 - balloon;

[0059] 300-External electromagnet device;

[0060] 400 - bladder;

[0061] 500-urethra. DETAILED DESCRIPTION

[0062] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0063] [Structure of flow guide tube 100]

[0064] like Figure 1 , Figure 2 as well as Fig.17 As shown, an embodiment of the present invention provides a drainage tube 100, which is inserted into the urethra 500 and the bladder 400, one end of the drainage tube 100 extends into the bladder 400, and the other end of the drainage tube 100 is located in the urethra 500. A drainage channel 1001 is provided in the drainage tube 100, and the drainage channel 1001 runs through the drainage tube 100. Urine in the bladder 400 is discharged into the urethra 500 through the drainage channel 1001 and then discharged to the outside.

[0065] In order to control the flow of urine, for example, when the urine is full, it is opened, and when it is not full, it is closed. In the embodiment provided by the present invention, reference is made to Figure 1 , Figure 2 , Figure 5 as well as Figure 6As shown, the diversion tube 100 includes a flow control portion 11, which is accommodated in a diversion channel 1001. The flow control portion 11 is axially arranged in the diversion channel 1001. A first flow channel 111 is provided throughout the flow control portion 11. The diversion channels 1001 located at opposite ends of the flow control portion 11 can only be connected through the first flow channel 111. By opening and closing the first flow channel 111, the entire diversion channel 1001 can be opened and closed. When the urine is not full, the first flow channel 111 is closed, and urine exists in the bladder 400 and cannot be discharged after passing through the first flow channel 111 and the diversion channel 1001. After the urine is full, the first flow channel 111 is opened, and the urine in the bladder 400 can pass through the first flow channel 111 and flow out to the outside. Those skilled in the art can know that the opening and closing degree of the first flow channel 111 can be controlled to control the flow rate, which is not limited here.

[0066] In a feasible implementation mode, referring to Figures 5 to 10 As shown, a flow control membrane 112 is formed on the inner surface of the first flow channel 111, and the shape of the flow control membrane 112 is changeable to repeatedly control the flow rate of the fluid in the guide channel 1001. The flow control portion 11 has a first end and a second end, and the positions of the first end and the second end can be axially moved and / or circumferentially rotated to change the shape of the flow control membrane 112.

[0067] The flow control membrane 112 has a first posture and a second posture, and can be switched between the first posture and the second posture by external force, so as to realize autonomous control, thereby eliminating the external part of the urethra 500 and eliminating the external device. Specifically:

[0068] Reference Figure 5 , Figure 7 as well as Fig. 9 As shown, when the flow control membrane 112 is in the first posture, the flow control membrane 112 completely covers the first flow channel 111, and the projection of the fluid in the first flow channel 111 in the axial direction of the first flow channel 111 completely falls on the flow control membrane 112. The urine flowing out of the bladder 400 will be blocked by the flow control membrane 112 and cannot pass through the flow control membrane 112, so as to limit the circulation of the fluid (urine) in the first flow channel 111, thereby avoiding urine leakage when urination is not needed.

[0069] Reference Figure 6 , Figure 8 as well as Fig.10As shown, when the flow control membrane 112 is in the second posture, the flow control membrane 112 does not completely cover the first flow channel 111, or the flow control membrane 112 is parallel to the first flow channel 111, and the projection of the fluid in the first flow channel 111 in the axial direction of the first flow channel 111 is misaligned on the flow control membrane 112. The flow control membrane 112 will not hinder the flow of the fluid (urine) in the first flow channel 111, and the guide channels 1001 located at the opposite ends of the flow control part 11 are connected through the first flow channel 111. When urination is needed, the urine in the bladder 400 enters the guide channel 1001 on one side of the flow control part 11, flows through the first flow channel 111, and then enters the guide channel 1001 on the other side of the flow control part 11, thereby being discharged from the body.

[0070] The drainage tube 100 provided in the above embodiment adopts a fully internal structure and is completely placed in the human body, eliminating the external part of the urethra 500 and the urine collection bag, and eliminating external devices. It will not only not interfere with the patient's daily life and social activities, but also reduce the risk of urethral 500 infection.

[0071] The structure and implementation of the flow control unit 11 are illustrated below by providing two specific structures. Those skilled in the art will appreciate that more variations can be made based on the design ideas of the following two structures, which still fall within the protection scope of the present invention.

[0072] The first structure of the flow guide tube 100

[0073] Reference Figures 5 to 8 As shown, the flow guide tube of the first structure utilizes the pressure change of the pressurized medium within a unit volume to achieve the purpose of switching the posture of the flow control membrane 112.

[0074] In a feasible implementation, a accommodating chamber 113 is formed in the flow control portion 11, and the accommodating chamber 113 is filled with a pressurized medium. The flow control membrane 112 is formed on the surface of the accommodating chamber 113 facing the first flow channel 111. The accommodating chamber 113 can be attached to the inner wall surface of the first flow channel 111, or be arranged at the wall body where the inner wall surface of the first flow channel 111 is located. No limitation is made here. When the accommodating chamber 113 is attached to the inner wall surface of the first flow channel 111, the undeformed flow control membrane 112 is closer to the axis of the first flow channel 111 than the inner wall surface of the first flow channel 111. The accommodating chamber 113 is arranged at the wall body where the inner wall surface of the first flow channel 111 is located, and the undeformed flow control membrane 112 is flush with the inner wall surface of the first flow channel 111.

[0075] The wall shared by the accommodating chamber 113 and the first flow channel 111 is made of silicone film material, which has good elasticity and can be deformed under the action of external force. The other parts of the guide tube 100 can be made of materials that are not easy to deform, such as steel, and the outer surface of the guide tube 100 is coated with anti-stone formation material.

[0076] After the flow control membrane 112 is pressurized by the pressurized medium, it can be deformed toward the first flow channel 111. The pressurized medium can be a liquid medium or a gaseous medium. It only needs to be able to apply pressure to the flow control membrane 112 after the space occupied by the squeezed flow control membrane 112, so that the flow control membrane 112 is deformed, thereby occupying the space of the first flow channel 111.

[0077] in:

[0078] When the flow-control membrane 112 is in the first posture, the flow-control membrane 112 undergoes the maximum deformation toward the first flow channel 111, the flow-control membrane 112 completely blocks the first flow channel 111, and the projection of the fluid in the first flow channel 111 in the axial direction of the first flow channel 111 completely falls on the flow-control membrane 112. The urine flowing out of the bladder 400 will be blocked by the flow-control membrane 112 and cannot pass through the flow-control membrane 112, so as to limit the circulation of the fluid (urine) in the first flow channel 111, thereby avoiding urine leakage when urination is not necessary.

[0079] In this embodiment, the flow control membrane 112 is an annular surface, and there are flow control membranes 112 on the 360° radial direction of the axis of the first flow channel 111. In this way, after being pressurized by the pressurized medium, the flow control membranes 112 are deformed toward the axis of the first flow channel 111 until all the flow control membranes 112 converge at the axis of the first flow channel 111 to block the first flow channel 111.

[0080] Those skilled in the art will appreciate that the flow control membrane 112 may also be a sector-shaped surface, with the flow control membrane 112 only being provided in a partial area radially relative to the axis of the first flow channel 111. In this way, after the flow control membrane 112 is deformed by the pressure of the pressurized medium, one end of the flow control membrane 112 will pass over the axis of the first flow channel 111 until the flow control membrane 112 reaches the inner wall surface of the first flow channel 111, thereby blocking the first flow channel 111.

[0081] When the flow control membrane 112 is in the second posture, the flow control membrane 112 undergoes minimal deformation toward the first flow channel 111. At this time, the extension direction of the flow control membrane 112 is parallel to the axial direction of the first flow channel 111, or the flow control membrane 112 partially blocks the first flow channel 111. The flow control membrane 112 will not hinder the flow of fluid (urine) in the first flow channel 111. The guide channels 1001 located at opposite ends of the flow control portion 11 are connected through the first flow channel 111. When urination is required, the urine in the bladder 400 enters the guide channel 1001 on one side of the flow control portion 11, flows through the first flow channel 111, and then enters the guide channel 1001 on the other side of the flow control portion 11, thereby being discharged from the body.

[0082] Preferably, the patient can control the flow rate of urine by controlling the deformation degree of the flow control membrane 112. When the flow control membrane 112 is not deformed, it is parallel to the axial direction of the first flow channel 111. At this time, the first flow channel 111 is not blocked by the flow control membrane 112, and the flow rate of urine reaches a maximum. After the flow control membrane 112 is deformed by the pressure of the pressurized medium, the greater the deformation degree, the more the first flow channel 111 is blocked, and the smaller the urine flow channel, until the flow control membrane 112 completely blocks the first flow channel 111, blocking the flow of urine.

[0083] In order to drive the pressurized medium to apply pressure to the flow control membrane 112, in this embodiment, the flow guide tube 100 also includes a first movable part 13 and a first fixed part 12, the first movable part 13 and the first fixed part 12 are located in the accommodating chamber 113, the first movable part 13 and the first fixed part 12 are arranged at opposite ends of the accommodating chamber 113, the first movable part 13 is at least partially made of magnetic material, and under the action of external magnetic force, the first movable part 13 can reciprocate along a first preset moving path. In the embodiment provided by the present invention, the first preset moving path is a linear moving path extending along the axial direction of the first flow channel 111, the first movable part 13 can approach or move away from the first fixed part 12, so that the pressurized medium can apply pressure to the flow control membrane 112, the closer the first movable part 13 is to the first fixed part 12, the greater the pressure applied by the pressurized medium, and the greater the deformation of the flow control membrane 112.

[0084] In one feasible embodiment, the first movable part 13 and the first fixed part 12 are components constituting the accommodating chamber 113. The movement of the first movable part 13 toward the first fixed part 12 will cause the overall volume of the accommodating chamber 113 to become smaller, the flow control membrane 112 will shrink and produce wrinkles, and the pressurized medium in the accommodating chamber 113 can only be squeezed toward the first flow channel 111. In another feasible embodiment, the first movable part 13 is not a component constituting the accommodating chamber 113, but is accommodated in the accommodating chamber 113. The movement of the first movable part 13 toward the first fixed part 12 will not cause the overall volume of the accommodating chamber 113 to become smaller, but will only squeeze the pressurized medium. The pressurized medium can only be squeezed toward the first flow channel 111, thereby causing the flow control membrane 112 to deform.

[0085] In the embodiment provided by the present invention, the first movable portion 13 and the first fixed portion 12 are taken as an example to illustrate that they are components of the accommodating chamber 113, wherein:

[0086] When the first movable portion 13 is located at the initial end of the first preset moving path, the flow control membrane 112 is in a first posture. At this time, the first movable portion 13 is closest to the first fixed portion 12. While the flow control membrane 112 is contracted and wrinkled, the pressure medium in the accommodating chamber 113 is also squeezed toward the first flow channel 111, causing the flow control membrane 112 to deform to the maximum. The flow control membrane 112 completely blocks the first flow channel 111, and the projection of the fluid in the first flow channel 111 in the axial direction of the first flow channel 111 completely falls on the flow control membrane 112. The urine flowing out of the bladder 400 will be blocked by the flow control membrane 112 and cannot cross the flow control membrane 112, so as to limit the circulation of the fluid (urine) in the first flow channel 111, thereby avoiding urine leakage when urination is not needed.

[0087] When the first movable part 13 is located at the end of the first preset moving path, the flow control membrane 112 is in the second posture. At this time, the first movable part 13 is farthest from the first fixed part 12, the flow control membrane 112 is naturally stretched, and the pressure medium in the accommodating chamber 113 will not squeeze the flow control membrane 112. At this time, the extension direction of the flow control membrane 112 is parallel to the axial direction of the first flow channel 111, or the flow control membrane 112 partially blocks the first flow channel 111. The flow control membrane 112 will not hinder the flow of fluid (urine) in the first flow channel 111. The guide channels 1001 located at the opposite ends of the flow control part 11 are connected through the first flow channel 111. When urination is needed, the urine in the bladder 400 enters the guide channel 1001 on one side of the flow control part 11, flows through the first flow channel 111, and then enters the guide channel 1001 on the other side of the flow control part 11, thereby being discharged from the body.

[0088] In order to make the first movable portion 13 remain at the starting end of the first preset moving path when urination is not required, and the first movable portion 13 can automatically return to the starting end of the first preset path after urination, in the embodiment provided by the present invention, the guide tube 100 further includes an elastic force applying portion 14, which is connected to the first movable portion 13 so that:

[0089] When there is no external magnetic force, the elastic force applying portion 14 continues to apply force to the first movable portion 13 , and the first movable portion 13 remains at the initial end of the first preset moving path to prevent urine leakage.

[0090] When subjected to external magnetic force, the first movable part 13 can elastically reciprocate within the first preset moving path, and the first movable part 13 moves along the first preset moving path toward the side away from the first fixed part 12. At this time, the elastic force-applying part 14 accumulates elastic restoring force. When the first movable part 13 is farthest from the first fixed part 12, the elastic restoring force is the largest. At this time, if the external magnetic force is not continued to be applied, the elastic restoring force will be released, so that the first movable part 13 returns to the initial end of the first preset moving path.

[0091] Reference Figure 5 as well as Figure 6 As shown, the elastic force-applying portion 14 is a tension spring, which is accommodated in the accommodating chamber 113. The opposite ends of the tension spring are respectively connected to the first movable portion 13 and the first fixed portion 12. The contraction force and length of the tension spring should be set according to actual needs. When not subjected to external magnetic force, the tension spring is in a contracted state, keeping the first movable portion 13 at the position closest to the first fixed portion 12. After being subjected to external magnetic force, the first movable portion 13 moves in a direction away from the first fixed portion 12, and the tension spring is stretched to accumulate elastic restoring force. If the external magnetic force is not applied, the elastic restoring force will be released, and the tension spring will pull the first movable portion 13 back to its initial position.

[0092] Those skilled in the art will appreciate that, in other embodiments, the elastic force applying portion 14 may also be a spring, as shown in FIG. Figure 7 as well as Figure 8 As shown, during the movement of the first movable part 13, the spring is compressed to accumulate elastic restoring force. If the external magnetic force is not continuously applied, the elastic restoring force will be released, and the spring will push the first movable part 13 back to the initial position.

[0093] Furthermore, a plurality of magnetic particles (not shown) are provided in the accommodating chamber 113, and the plurality of magnetic particles are distributed in a ring shape. The flow control membrane 112 is deformed toward the axis of the first flow channel 111 after being pressurized by the pressurized medium, and the annular flow control membrane 112 outside the axis of the first flow channel 111 is concentrated toward the axis of the first flow channel 111 until all the flow control membranes 112 converge at the axis of the first flow channel 111. At this time, the plurality of magnetic particles are adsorbed to each other through magnetic action, so that the flow control membranes 112 fit each other, and the posture of the flow control membrane 112 is more stable, thereby preventing urine leakage.

[0094] In a feasible implementation manner, the first fixed part 12 and the first movable part 13 are both annular structures, the first movable part 13 is made of permanent magnet material, the position of the first fixed part 12 is fixed, the first movable part 13 can be close to or away from the first fixed part 12, and a first blocking part 17 is also provided on the side of the first movable part 13 facing away from the first fixed part 12 to limit the range of the first preset moving path of the first movable part 13 to prevent the first movable part 13 from falling out. The first blocking part 17 can also be annular structure, and the thickness and height of the first blocking part 17, the first fixed part 12 and the first movable part 13 are the same.

[0095] The second structure of the flow guide tube 100

[0096] In this embodiment, the flow control portion 11 has a first end and a second end, the first flow channel 111 runs through the flow control portion 11, and the opposite ends of the first flow channel 111 are respectively connected to the first end and the second end of the flow control portion 11, and the flow control membrane 112 is formed on the inner surface of the first flow channel 111. The wall body where the flow control membrane 112 is located is made of an elastic (silicone or nylon, etc.) film material, has a certain elasticity and tension, is damage-resistant, and is not easy to deform (will not relax and deform due to repeated twisting and pulling), and has anti-stone properties. Along the axial direction of the first flow channel 111, the second end of the flow control portion 11 can be rotated relative to the first end by a preset angle, wherein:

[0097] When the flow control membrane 112 is in the first posture, the second end of the flow control portion 11 has rotated through a preset angle. Preferably, the preset angle is at least 180°. One end of the first flow channel 111 also rotates synchronously with the other end through the preset angle, so that the flow control membrane 112 is twisted with the axis of the first flow channel 111 as the center line, thereby closing the first flow channel 111. Urine flowing out of the bladder 400 will be blocked by the flow control membrane 112 and cannot pass through the flow control membrane 112, thereby limiting the circulation of the fluid (urine) in the first flow channel 111, thereby avoiding urine leakage when urination is not needed.

[0098] When the flow control membrane 112 is in the second posture, relative to the first posture, the second end of the flow control part 11 is reversed at a preset angle, so that the flow control membrane 112 is parallel to the first flow channel 111, and the flow control membrane 112 will not hinder the flow of fluid (urine) in the first flow channel 111. The guide channels 1001 located at the opposite ends of the flow control part 11 are connected through the first flow channel 111. When urination is required, the urine in the bladder 400 enters the guide channel 1001 on one side of the flow control part 11, flows through the first flow channel 111, and then enters the guide channel 1001 on the other side of the flow control part 11, thereby being discharged from the body.

[0099] In order to drive the second end of the flow control part 11 to rotate, the flow guide tube 100 also includes a second fixed part 15 and a second movable part 16. The second fixed part 15 is connected to the first end of the flow control part 11, and the second movable part 16 is connected to the second end of the flow control part 11. The second fixed part 15 and the second movable part 16 are at least partially made of magnetic material. The position of the second fixed part 15 is unchanged. Under the action of external magnetic force, the second movable part 16 can reciprocate along the second preset movement path. In the embodiment provided by the present invention, the first preset movement path is a linear movement path extending along the axial direction of the first flow channel 111. During the movement, the second movable part 16 will rotate with the axial direction of the first flow channel 111 as the center line. Preferably, during the movement of the second movable part 16, the second movable part 16 is guided and matched in the guide groove, and the guide groove extends in a spiral shape, thereby guiding the second movable part 16 to rotate smoothly during the linear movement.

[0100] In a feasible implementation manner, the second fixed portion 15 is a permanent magnet, including a first fixed split 151 and a second fixed split 152. The first fixed split 151 and the second fixed split 152 are symmetrically arranged with the axis of the first flow channel 111 as the center line. The first fixed split 151 has a first polarity, and the second fixed split 152 has a second polarity. For example, the first fixed split 151 and the second fixed split 152 are both arc-shaped blocks, and the structures and sizes of the two are the same. The first fixed split 151 is an N pole, and the second fixed split 152 is an S pole.

[0101] The second movable part 16 is also a permanent magnet. The structure of the second movable part 16 is the same as that of the second fixed part 15. The second movable part 16 includes a second movable split 162 and a second movable split 162. The first movable split 161 and the second movable split 162 are symmetrically arranged with the axis of the first flow channel 111 as the center line. The first movable split 161 has the second polarity, and the second movable split 162 has the first polarity. For example, the first movable split 161 and the second movable split 162 are both arc-shaped blocks, and the structure and size of the two are the same. The first movable split 161 is the S pole, and the second movable split 162 is the N pole.

[0102] in:

[0103] When the second movable part 16 is located at the starting end of the second preset moving path, in the axial direction of the first flow channel 111, the first fixed split 151 corresponds to the first movable split 161, the polarity of the first fixed split 151 and the first movable split 161 are opposite, and the two attract each other, the second fixed split 152 corresponds to the second movable split 162, the polarity of the first fixed split 151 and the first movable split 161 are opposite, and the two attract each other, and the magnetic force between the second fixed part 15 and the second movable part 16 makes the second fixed part 15 and the second movable part 16 tend to approach each other. At this time, the second end of the flow control part 11 has been rotated by a preset angle relative to the first end, the flow control membrane 112 is twisted, and the flow control membrane 112 is in the first posture, and the flow control membrane 112 completely blocks the first flow channel 111.

[0104] Under the action of external magnetic force, the second movable portion 16 overcomes the magnetic attraction between the second fixed portion 15 and the second movable portion 16 linearly moves in a direction away from the second fixed portion 15 while rotating.

[0105] When the second movable portion 16 is located at the end of the second preset moving path, the second end of the flow control portion 11 has been rotated in the opposite direction by a preset angle, and in the axial direction of the first flow channel 111, the first fixed split 151 corresponds to the second movable split 162, the first fixed split 151 and the second movable split 162 have the same polarity, and the two repel each other, the second fixed split 152 corresponds to the first movable split 161, the second fixed split 152 and the first movable split 161 have the same polarity, and the two repel each other, at this time, the extension direction of the flow control membrane 112 is parallel to the axial direction of the first flow channel 111, or the flow control membrane 112 partially blocks the first flow channel 111, and the flow control membrane 112 will not hinder the flow of fluid (urine) in the first flow channel 111.

[0106] At this time, if the external magnetic force is removed, since the second fixed portion 15 and the second movable portion 16 repel each other, the second movable portion 16 remains at a position away from the second fixed portion 15, and the flow control membrane 112 remains in the second posture. The patient does not need to continuously apply external magnetic force, and one hand is freed. When urination is finished, the external magnetic force is applied again, and the second movable portion 16 returns to the initial end of the second preset moving path and rotates at a preset angle, so that the second movable portion 16 and the second fixed portion 15 attract each other again, and the flow control membrane 112 is twisted again and returns to the first posture.

[0107] Preferably, the second movable portion 16 can be close to or away from the second fixed portion 15, and a second blocking portion 18 is provided on the side of the second movable portion 16 facing away from the second fixed portion 15. The second blocking portion 18 is a ring structure to limit the range of the second preset moving path of the second movable portion 16 to prevent the second movable portion 16 from falling out.

[0108] Based on the flow control unit 11 provided in the above embodiment, refer to Figure 1 , Figure 2 as well as Fig.17 As shown, the overall structure of the drainage tube provided by the present invention includes a first tube body 101, a second tube body 102 and a third tube body 103 connected to each other, corresponding to the human urethra 500 and the bladder 400 connected to the urethra 500. After the drainage tube is inserted into the urethra 500, the first tube body 101 extends into the bladder 400, and the second tube body 102 and the third tube body 103 are both accommodated in the urethra 500. The second tube body 102 corresponds to the prostate part and the membrane section of the urethra 500, and the third tube body 103 corresponds to the urethral bulb section of the urethra 500.

[0109] The flow guide channel 1001 passes through the first tube body 101, the second tube body 102 and the third tube body 103 in sequence. The flow control part 11 is accommodated in the flow guide channel 1001 at the second tube body 102. The tube wall of the second tube body 102 should be made of a hard, non-deformable and light material such as steel. The surface is coated with a stone-proof material. As long as the second tube body 102 can be guaranteed not to be deformed or broken, the thinner the tube wall is, the better, so that more space can be made for the installation of the flow control part 11 and the drainage of urine.

[0110] The first tube body 101 and the third tube body 103 both have a basic form and an excited form, wherein:

[0111] When the ambient temperature of the first tube body 101 and / or the third tube body 103 is within the first interval, the first tube body 101 and / or the third tube body 103 are in a basic form. In the basic form, the first tube body 101, the second tube body 102 and the third tube body 103 are all tubular so as to be smoothly inserted into the urethra 500.

[0112] When the ambient temperature of the first tube body 101 and / or the third tube body 103 is within the second interval, the first tube body 101 and / or the third tube body 103 are in an excited state, and the tube diameters of the first tube body 101 and the third tube body 103 in the excited state are larger than the tube diameters in the basic state. The first tube body 101 can be stuck at the connection between the bladder 400 and the urethra 500, thereby ensuring that the first tube body 101 will not slip out of the bladder 400, and the third tube body 103 is fixed between the bulb of the urethra 500 and the bladder 400, thereby achieving anchoring of the drainage tube 100 in a specific area of ​​the urethra 500, thereby improving the stability and safety of the drainage tube 100 during long-term use.

[0113] In a feasible implementation mode, referring to Figure 3 as well as Figure 4 As shown, the first tube body 101 is coated with a first strip body 1011 inside, and the first strip body 1011 is wrapped in a silicone film layer so that the bladder 400 mucosa will not be accidentally damaged by the first strip body 1011. The first strip body 1011 is made of shape memory alloy and extends in a spiral shape along the axial direction of the first tube body 101.

[0114] The first interval range of the shape memory alloy (SMA) is a low temperature phase, which can be any temperature range of 10° C.-30° C. Within this range, the first tube body 101 is in a basic form, which is a tubular structure.

[0115] The second interval range of the shape memory alloy (SMA) is the high temperature phase, which can be any temperature range of 40°C-45°C. Within this range, the first tube body 101 is in an excited state, the first strip 1011 is deformed, and the first tube body 101 is stretched to form a flat trumpet-shaped structure. The small diameter end of the flat trumpet-shaped structure is connected to the second tube body 102.

[0116] Before the drainage tube 100 is inserted into the bladder 400, the diameter of the first tube body 101 with a tubular structure is slightly smaller than the diameter of the second tube body 102, so that the first tube body 101 can be locked and fixed in the corresponding correct position of the matching insertion catheter 200. The initial length of the first tube body 101 does not exceed 1.5 cm (preferably within 1.0 cm), and the inner and outer walls of the first tube body 101 are lined with a thin layer of silica gel material that prevents stone formation.

[0117] After the first tube body 101 is placed in the bladder 400, when the surrounding temperature reaches 40°C-45°C by injecting warm water, the first strip 1011 of the first tube body 101 changes from a spiral tubular structure to a flat trumpet-shaped structure. After the deformation, the diameter of the small diameter end of the flat trumpet-shaped structure can be slightly larger than the diameter of the second tube body 102 to facilitate the removal of the matching insertion catheter 200; the diameter of the large diameter end of the flat trumpet-shaped structure is about 2.5 cm to ensure that the guide tube 100 will not slip out of the bladder 400, and the height of the flat trumpet-shaped structure is preferably about 0.5 cm, not exceeding 1.0 cm.

[0118] In a feasible implementation mode, referring to Fig.11 as well as Fig.12 As shown, the interior of the third tube 103 is coated with a second strip 1031 and a first ring 1032, the second strip 1031 and the first ring 1032 are both wrapped in a silicone ring, the second strip 1031 and the first ring 1032 are both made of shape memory alloy, one end of a plurality of second strips 1031 is connected to the first tube 101, and the other ends of a plurality of second strips 1031 are connected to the first ring 1032, and along the axis direction of the third tube 103, a plurality of second strips 1031 extend linearly. The silicone ring should be moderately soft and hard, and should not restrict the second strip 1031 from changing from a straight strip to an arc. (That is, the silicone ring embedded with the second strip 1031 should smoothly unfold and deform into a lantern shape in a high temperature environment).

[0119] The first interval range of the shape memory alloy (SMA) is a low temperature phase, which can be any temperature range of 10° C.-30° C. Within this range, the second tube body 102 is in a basic form, which is a tubular structure.

[0120] The second interval range of the shape memory alloy (SMA) is a high temperature phase, which can be any temperature range of 40°C-45°C. Within this range, the second tube body 102 is in an excited state, and the second strip body 1031 is deformed, expanding the second tube body 102 to form a lantern-shaped structure. At the same time, the locking and fixing effect of the third tube body 103 on the matching insertion catheter 200 is released, so that the guide tube 100 is internally fixed between the bulb of the urethra 500 and the bladder 400 and will not slip into the bladder 400.

[0121] [Structure of Insertion Catheter 200]

[0122] Based on the flow guide tube 100 provided in the above embodiment, refer to Figures 13 to 23 As shown, the present invention also provides an insertion catheter 200, which is a tube structure. The drainage tube 100 is sleeved on the insertion catheter 200. As the insertion catheter 200 is inserted into the bladder 400 from the outer opening of the urethra 500, the drainage tube 100 can be fixed in the urethra 500.

[0123] The flow guide tube 100 is sleeved on the insertion catheter 200. The insertion catheter 200 is provided with a first flow path 201, a second flow path 202 and a third flow path 203, wherein:

[0124] The first flow path 201 forms a first outlet 2011 on the insertion conduit 200, and forms a first inlet 2012 at one end of the insertion conduit 200. After the liquid is injected through the first inlet 2012, it can be sent out from the first outlet 2011 through the first flow path 201. The first outlet 2011 is close to the first tube body 101 of the guide tube 100, and the water flow can change the ambient temperature of the first tube body 101.

[0125] The second flow path 202 forms a second outlet 2021 on the insertion conduit 200, and forms a second inlet 2022 at one end of the insertion conduit 200. After the liquid is injected through the second inlet 2022, it can be sent out from the second outlet 2021 through the second flow path 202. The second outlet 2021 is close to the third tube body 103 of the guide tube 100, and the water flow can change the ambient temperature of the third tube body 103.

[0126] The third flow path 203 forms a third outlet 2031 on the insertion catheter 200, and forms a third inlet 2032 at one end of the insertion catheter 200. After the gas is injected through the second inlet 2022, it can be delivered from the third outlet 2031 through the third flow path 203. An airbag 204 is provided on the insertion catheter 200, and the third outlet 2031 is connected to the airbag 204.

[0127] Insert the insertion catheter 200 with the drainage tube 100 into the bladder 400 from the external opening of the urethra 500, inject a certain amount of gas into the air bag 204 through the third flow path 203, gently pull the drainage tube 100, so that the first tube body 101 of the drainage tube 100 is located at the neck of the bladder 400 and the internal opening of the urethra 500, inject 40℃-45℃ warm water from the first flow path 201, so that the spiral tube structure formed by the first strip 1011 of the first tube body 101 changes into a flat trumpet structure, keep gently pulling the drainage tube 100, so that the third tube body 103 is located at the corresponding position of the bulb of the urethra 500, inject 40℃-45℃ warm water from the second pipeline, so that the second strip 1031 of the third tube body 103 changes from a cylindrical structure to a lantern structure as the temperature rises. In this way, the drainage tube 100 is fixed to the urethra 500 through the expansion and deformation of the first tube body 101 and the third tube body 103. At the same time, as the first tube body 101 and the third tube body 103 expand, the closing and fixing effect on the insertion catheter 200 is lost, and the insertion catheter 200 can be pulled out of the body at this time.

[0128] [Structure of the extracorporeal electromagnet device 300]

[0129] In order to apply external magnetic force, the present invention also provides an extracorporeal electromagnet device 300, the working end of which is a "U"-shaped structure. When urinating, the working end of the extracorporeal electromagnet device 300 is placed close to the bulbous part of the perineal urethra 500, and the external magnetic force is activated, so that the flow control membrane 112 is in the second posture to achieve urination.

[0130] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A flow guide pipe (100), provided with a flow guide channel (1001), characterized in that: The flow guide tube (100) comprises: A flow control portion (11) is arranged axially in the flow guide channel (1001), and a flow control membrane (112) is provided on the inner surface of the flow control portion (11). The shape of the flow control membrane (112) is changeable so as to repeatedly control the flow rate of the fluid in the flow guide channel (1001).

2. The flow guide tube (100) according to claim 1, characterized in that: The flow control portion (11) has a first end and a second end, and the positions of the first end and the second end can be axially moved and / or circumferentially rotated to change the shape of the flow control membrane (112).

3. The flow guide tube (100) according to claim 2, characterized in that: A containing chamber (113) is formed in the flow control membrane (112), and a pressurized medium is filled in the containing chamber (113). The flow guide tube (100) further comprises a first movable part (13), and the first movable part (13) is connected to the containing chamber (113). The first movable part (13) is at least partially made of magnetic material.

4. The flow guide tube (100) according to claim 3, characterized in that: The flow guide tube (100) further comprises an elastic force-applying portion (14), wherein the elastic force-applying portion (14) is connected to the first movable portion (13).

5. The flow guide tube (100) according to claim 2, characterized in that: The flow guide tube (100) further comprises a second fixed portion (15) and a second movable portion (16), wherein the second fixed portion (15) is connected to the first end of the flow control portion (11), and the second movable portion (16) is connected to the second end of the flow control portion (11), and the second fixed portion (15) and the second movable portion (16) are at least partially made of magnetic material, and under the action of external magnetic force, the second movable portion (16) can reciprocate along a second preset moving path, wherein: The second fixing portion (15) comprises a first fixing sub-body (151) and a second fixing sub-body (152), the first fixing sub-body (151) and the second fixing sub-body (152) being symmetrically arranged with the axis of the first flow channel (111) as the center line, the first fixing sub-body (151) having a first polarity, and the second fixing sub-body (152) having a second polarity; The second movable part (16) comprises a first movable sub-body (161) and a second movable sub-body (162), the first movable sub-body (161) and the second movable sub-body (162) being symmetrically arranged with the axis of the first flow channel (111) as the center line, the first movable sub-body (161) having the second polarity, and the second movable sub-body (162) having the first polarity; in: When the second movable portion (16) is located at the starting end of the second preset moving path, in the axial direction of the first flow channel (111), the first fixed split body (151) corresponds to the first movable split body (161), the second fixed split body (152) corresponds to the second movable split body (162), the second end of the flow control portion (11) rotates by a preset angle relative to the first end, and the flow control membrane (112) completely blocks the first flow channel (111); When the second movable portion (16) is located at the end of the second preset moving path, in the axial direction of the first flow channel (111), the first fixed split body (151) corresponds to the second movable split body (162), the second fixed split body (152) corresponds to the first movable split body (161), and the extension direction of the flow control membrane (112) is parallel to the axial direction of the first flow channel (111), or the flow control membrane (112) partially blocks the first flow channel (111).

6. The flow guide tube (100) according to claim 1, characterized in that: The flow guide tube comprises a first tube body (101), a second tube body (102) and a third tube body (103) which are connected to each other; the flow guide channel (1001) sequentially penetrates the first tube body (101), the second tube body (102) and the third tube body (103); the flow control portion (11) is accommodated in the flow guide channel (1001) at the second tube body (102); the first tube body (101) and the third tube body (103) both have a basic form and an excited form, wherein: When the ambient temperature of the first tube body (101) and / or the third tube body (103) is within a first interval, the first tube body (101) and / or the third tube body (103) are in a basic state; when the ambient temperature of the first tube body (101) and / or the third tube body (103) is within a second interval, the first tube body (101) and / or the third tube body (103) are in an excited state; the tube diameters of the first tube body (101) and the third tube body (103) in the excited state are larger than the tube diameters in the basic state.

7. The flow guide tube (100) according to claim 6, characterized in that: The first tube (101) is coated with a first strip (1011) inside. The first strip (1011) is made of a shape memory alloy. Along the axial direction of the first tube (101), the first strip (1011) extends in a spiral shape.

8. The flow guide tube (100) according to claim 6, characterized in that: The third tube (103) is internally coated with a second strip (1031) and a first ring (1032); the second strip (1031) and the first ring (1032) are both made of shape memory alloy; one end of a plurality of the second strips (1031) is connected to the first tube (101); the other ends of a plurality of the second strips (1031) are connected to the first ring (1032); and along the axial direction of the third tube (103), the plurality of the second strips (1031) extend linearly.

9. An insertion catheter (200), characterized in that The flow guide tube (100) applied to any one of claims 1 to 8, wherein a first flow path (201) and a second flow path (202) are provided in the insertion catheter (200), the first flow path (201) forms a first outlet (2011) on the insertion catheter (200), and the second flow path (202) forms a second outlet (2021) on the insertion catheter (200), and when the flow guide tube (100) is sleeved on the insertion catheter (200), the first outlet (2011) is close to the first tube body (101) of the flow guide tube (100), and the second outlet (2021) corresponds to the third tube body (103) of the flow guide tube (100).

10. An extracorporeal electromagnet device (300), characterized in that: Used to apply external magnetic force to the flow guide tube (100) described in any one of claims 1 to 8, the working end of the extracorporeal electromagnet device (300) is a "U"-shaped structure.

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