Non-contact electromagnetic traction device for treating middle and high anorectal atresia

Abstract

The utility model discloses a non-contact electromagnetic traction device for treating middle and high anorectal atresia. The non-contact electromagnetic traction device comprises intestinal tract built-in metal, an in-vitro columnar electromagnet and an electromagnet regulator, the intestinal tract built-in metal is in a water drop shape, the in-vitro columnar electromagnet can generate a magnetic field after being connected with direct current, and the magnetic field acts on the intestinal tract built-in metal and provides magnetic force to enable the intestinal tract built-in metal to generate traction force on the blind end of the digestive tract; and the electromagnet regulator is used for regulating the voltage and / or current of the direct current so as to regulate the magnetic field intensity. By the adoption of the electromagnetic traction device, wounds of a patient can be reduced, controllable traction is conducted on the blind end of the rectum, and the treatment effect of a child patient with middle-high rectum atresia can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clinical medical equipment, and in particular relates to a non-contact electromagnetic traction device for treating middle and high anorectal atresia. Background Art

[0002] Congenital anorectal atresia is a common developmental malformation of the digestive tract in newborns, and surgery is currently the only treatment method. Traditional surgery can easily cause complications such as neurological damage, fecal fistula, anal stenosis, and fecal incontinence in children after surgery, among which middle and high anorectal atresia is the most serious. For middle and high anorectal atresia, the existing surgical traction method is highly invasive and difficult to care for. There is a certain probability of nerve damage during the operation, which has a great impact on the child's future quality of life and mental health. Therefore, "low trauma, simple operation, and preservation of the child's defecation function" has become a major demand for the treatment of middle and high anorectal atresia. However, there is no suitable device in the existing technology that can perform controllable traction to assist in achieving this treatment goal. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned existing surgical operations and the inherent defects of traditional permanent magnet traction equipment, the purpose of the present utility model is to provide a non-contact electromagnetic traction device for treating middle and high anorectal atresia, so as to achieve "magnetically controllable" traction of the blind end of the rectum of children with middle and high anorectal atresia under the premise of minimally invasive treatment.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A non-contact electromagnetic traction device for treating mid-high anorectal atresia, comprising intestinal built-in metal, an external cylindrical electromagnet and an electromagnet controller;

[0006] The intestinal embedded metal is in the shape of a teardrop, and the external cylindrical electromagnet can generate a magnetic field when connected to a direct current. The magnetic field acts on the intestinal embedded metal, providing a magnetic force to generate a pulling force on the blind end of the digestive tract;

[0007] The electromagnet controller is used to regulate the voltage and / or current of the direct current, thereby regulating the magnetic field strength.

[0008] In one embodiment, the intestinal built-in metal is made of stainless steel, and the surface is treated with titanium nitride coating.

[0009] In one embodiment, the teardrop shape refers to being smooth throughout, with the diameter first increasing and then decreasing from one end to the other, and the end with the smallest diameter has an arc-shaped top structure. Outside the arc-shaped top structure, the diameter of the intestinal built-in metal at the smallest end ranges from 2 to 4 mm, the diameter at the other end ranges from 7 to 11 mm, and the diameter at the largest end ranges from 8 mm to 12 mm.

[0010] In one embodiment, outside the arc-shaped top structure, the distance from the smallest end of the intestinal metal to the largest diameter is in the range of 31 to 35 mm, and the distance from the other end to the largest diameter is in the range of 5 to 9 mm.

[0011] In one embodiment, the cross-section of the other end of the intestinal embedded metal is a perfect circle.

[0012] In one embodiment, the diameter of the perfect circle is 8 mm, 9 mm, 10 mm, 11 mm or 12 mm, and the height is 40 mm, where the height refers to the distance between the top of the arc and the other end.

[0013] In one embodiment, the extracorporeal cylindrical electromagnet is wound with 800 to 1400 turns (preferably 1000 turns) of copper coil, the outer shell is a pure iron shell, the diameter is 120 to 200 mm (preferably 150 mm), the height is 120 to 200 mm (preferably 150 mm), and it has an outlet to connect it to the electromagnet controller.

[0014] In one embodiment, the electromagnet controller uses an adjustable DC regulated power supply to convert 220V AC power into 24V DC power to supply the extracorporeal cylindrical electromagnet.

[0015] In one embodiment, the adjustable DC regulated power supply has a current regulating module and a voltage regulating module.

[0016] In one embodiment, the electromagnetic controller has a cooling fan and overload protection inside, and a power interface on the back.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Since only the "teardrop"-shaped intestinal metal insert needs to be placed in the intestine, all other procedures can be performed outside the body. This allows the child to avoid the significant trauma associated with traditional surgical procedures. The "teardrop"-shaped design is more compliant with the human body, minimizing trauma. Furthermore, because the device incorporates an electromagnet controller, the operator can simply adjust the output current, thereby regulating the traction force. Furthermore, compared to traditional constant magnetic traction technology, the magnetic field produced by this device is linear, capable of achieving any desired electromagnetic field within the rated power range, rather than the specified electromagnetic field size of traditional constant magnetic traction devices. This device is simpler and faster to operate than traditional constant magnetic traction devices. This electromagnetic traction device allows for adjustment of traction force based on clinical needs, is less invasive, and is easy to operate. Therefore, it can effectively improve the treatment of children with mid- to high-level anorectal atresia and reduce postoperative complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the "water drop" shaped intestinal built-in metal structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of an extracorporeal cylindrical electromagnet of the utility model.

[0021] Figure 3 It is a schematic diagram of the electromagnetic controller of the present invention (viewing angle 1).

[0022] Figure 4 It is a schematic diagram of the electromagnetic controller of the present invention (viewing angle 2).

[0023] Figure 5 This is a schematic diagram of the intestinal embedded metal of the utility model after being placed into the intestine.

[0024] Figure 6 This is a schematic diagram of the connection between an extracorporeal cylindrical electromagnet and an electromagnet controller of the utility model.

[0025] Figure 7 This is a schematic diagram of the working principle of the utility model. The single arrow in the figure indicates the force direction of the "water drop" shaped intestinal built-in metal, and the double arrows indicate the distance from the lower edge of the blind end of the rectum to the skin surface of the anus.

[0026] Figure 8 This is a schematic diagram of the working principle of the utility model. In the figure, the single arrow indicates the force direction of the metal built into the "water drop" shaped intestine, and the dotted line indicates the blind end position of the digestive tract after the force is extended.

[0027] Figure 9 and Figure 10 This is a clinical trial photo of this utility model

[0028] Among them: 1. Metal built into the intestine, 2. External cylindrical electromagnet, 3. Wire outlet of cylindrical electromagnet, 4. Wire, 5. Portable handle, 6. Display screen, 7. Constant current indicator light, 8. Constant voltage indicator light, 9. Coarse current adjustment knob, 10. Fine current adjustment knob, 11. Coarse voltage adjustment knob, 12. Fine voltage adjustment knob, 13. Output button, 14. Main switch of electromagnet regulator, 15. Negative output interface, 16. Positive output interface, 17. Ground interface, 18. Cooling fan, 19. Power interface, 20. Fuse. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention in detail with reference to the accompanying drawings and examples.

[0030] As previously mentioned, existing constant magnet traction technology, on the one hand, the shape design of the internal magnets still needs to be optimized. On the other hand, when responding to different usage scenarios with different magnetic force requirements, the operator is required to manually replace magnets with different magnetic field strengths or increase or decrease the number of constant magnets to change the magnetic field strength and, in turn, the traction force. In this process, traditional constant magnet traction devices are not only cumbersome to operate, but their mechanism for changing magnetic field strength limits the range of magnetic field strength changes they bring about, failing to cover the actual range of current clinical needs.

[0031] To this end, the present invention provides a non-contact electromagnetic traction device for treating mid-high anorectal atresia. Figures 1-8 As shown, it mainly includes intestinal built-in metal 1, external cylindrical electromagnet 2 and electromagnet controller.

[0032] Among them, the intestinal built-in metal 1 can produce a mechanical effect on the blind end of the digestive tract under the action of the magnetic field. It is the part placed in the body and is in the shape of a water drop, such as Figure 1 As shown. The external cylindrical electromagnet 2 is the external part, as shown Figure 2 As shown, its function is to generate a magnetic field after connecting to direct current. This magnetic field can act on the intestinal built-in metal 1 in the body, providing magnetic force to generate the required pulling force on the blind end of the digestive tract, thereby stretching the blind end of the digestive tract. The electromagnet controller is an existing product, and its appearance is referenced Figure 3 As shown, it is used to regulate the voltage and / or current of the direct current, thereby regulating the magnetic field strength.

[0033] The teardrop-shaped design of the intestinal built-in metal 1 is a major feature of the utility model. The whole body material is stainless steel, and the surface is treated with titanium nitride coating, which can effectively avoid corrosion from digestive fluid. When used, it is placed at the blind end of the closed rectum. Under the action of the magnetic field of the external cylindrical electromagnet 2, it can generate traction on the blind end of the rectum, so as to achieve the purpose of extending the closed blind end of the rectum.

[0034] The utility model further defines the water drop shape, and again refers to Figure 1 The so-called teardrop shape means that the whole body is smooth, and the diameter increases first and then decreases from one end to the other end, and the end with the smallest diameter has an arc-shaped top structure (i.e. Figure 1 The "upper end" of the structure shown in the figure) is outside the arc-shaped top structure, and the smallest end of the intestinal metal 1 (i.e. Figure 1 The diameter of the "upper end" after the arc top is removed is in the range of 2 to 4 mm, and the other end (i.e. Figure 1 The diameter of the "lower end" of the structure shown is in the range of 7 to 11 mm, and the diameter of the largest point is in the range of 8 to 12 mm.

[0035] Furthermore, outside the arc-shaped top structure, the distance from the smallest diameter end to the largest diameter of the intestinal embedded metal 1 is in the range of 31 to 35 mm, while the distance from the other end to the largest diameter is in the range of 5 to 9 mm.

[0036] Furthermore, the cross-section of the other end of the intestinal embedded metal 1 is a perfect circle, that is, the other end of the intestinal embedded metal 1 is a truncated cone shape that is "large at the top and small at the bottom", and the bottom and the side have a smooth transition, and rounded corners are designed everywhere. There are no sharp corners throughout the body. This smooth curve transition design can prevent scratches on the intestine.

[0037] According to the above structural design of the present invention, when the intestinal embedded metal 1 is placed into the body, under the action of gravity and magnetic traction, its "lower end" can be directed toward the blind rectum to prevent intestinal perforation.

[0038] In one embodiment of the present invention, five sizes of perfect circular diameters are provided for the intestinal implant (1) to accommodate different clinical application scenarios. These sizes are 8mm, 9mm, 10mm, 11mm, and 12mm, all with a height of 40mm. The material is stainless steel. The height here refers to the distance between the top of the arc and the other end, i.e., the overall height of the intestinal implant (1). In clinical applications, the base diameters can be changed according to actual needs to accommodate intestinal cavities of different sizes.

[0039] In one embodiment of the present invention, a specific structural form of an external cylindrical electromagnet 2 is provided. Figure 2 The cylindrical electromagnet has a diameter and height of 120 to 200 mm, preferably 150 mm. It has a pure iron shell and is wound with 800 to 1400 turns (preferably 1000 turns) of copper coil. It is rated for 24V and a maximum current of 6A, generating a magnetic field strength of 0-3000 Gs. It also has a wire outlet 3 for connecting it to the electromagnet controller via a wire 4. In clinical applications, the number of copper coil turns in the in vitro cylindrical electromagnet 2 can be increased or decreased to adjust its rated power according to actual needs.

[0040] Conventional permanent magnet magnetic traction devices manually replace permanent magnets of different magnetic field strengths, or increase or decrease the number of permanent magnets to change the magnetic field strength and thus the magnetic force. However, the manual replacement operation is cumbersome, and the change in magnetic field strength brought about by this operation mode is point-to-point rather than linear, which makes the mechanical effect it produces relatively limited. To this end, the present invention adopts an electromagnet controller, which can specifically adopt an adjustable DC regulated power supply that can convert 220V AC power into 24V DC power and supply it to the external cylindrical electromagnet 2. The electromagnet controller is connected to the external cylindrical electromagnet 2 and can regulate the magnetic field strength of the external cylindrical electromagnet 2 and display real-time current and voltage changes.

[0041] In one embodiment of the present invention, a specific structural form of an electromagnet controller is provided. Figure 3 and Figure 4 The top of the housing has a portable handle 5, and the front end has a display screen 6, a constant current indicator light 7, a constant voltage indicator light 8, a coarse current adjustment knob 9, a fine current adjustment knob 10, a coarse voltage adjustment knob 11, a fine voltage adjustment knob 12, an output button 13, a main switch 14 for the electromagnet regulator, an output negative terminal 15, an output positive terminal 16, and a grounding terminal 17. The rear end is provided with a cooling fan 18, a power supply terminal 19, and a fuse 20. The display screen 6 can display the real-time current and voltage levels. The adjustable DC regulated power supply has a current regulation module and a voltage regulation module. The coarse current adjustment knob 9 and the fine current adjustment knob 10 correspond to the internal current regulation module, while the coarse voltage adjustment knob 11 and the fine voltage adjustment knob 12 correspond to the internal voltage regulation module, and can adjust the output current and voltage. The fuse 20 provides overload protection, and the cooling fan 18 provides heat dissipation.

[0042] This type of adjustable DC regulated power supply is already commercially available, such as the Maisheng MS3010C programmable adjustable DC regulated power supply. Its current display scale is accurate to 0.001A, and its voltage display scale is accurate to 0.01V. The electromagnet controller can select constant current or constant voltage output according to actual needs. Under constant voltage operation, the magnetic field strength can be adjusted by adjusting the output current, which in turn changes the tension on the intestinal metal 1.

[0043] Figure 5 The diagram shows the insertion of a "water drop" shaped intestinal metal 1 into the blind end of an obstructed rectum. It should be noted that the "water drop" shaped metal should be placed upright in the blind end rectum and must not be placed upside down or horizontally to avoid intestinal perforation. Figure 6 Schematic diagram of connecting the extracorporeal cylindrical electromagnet 2 with the electromagnet controller. The wire 4 is connected to the output negative interface 15 and the output positive interface 16 of the electromagnet controller through the outlet 3, and the electromagnet controller is connected to the 220V AC power supply through the power interface 19.

[0044] like Figure 7-Figure 8 The figure shows a schematic diagram of the present invention in human body application. For example, after connecting the cylindrical electromagnet and the electromagnet controller, simultaneously connect the electromagnet controller to a 220V AC power source via its power port. Turn on the electromagnet controller's main switch 14, rotate the coarse current adjustment knob 9 for coarse current adjustment, rotate the fine current adjustment knob 10 for fine current adjustment, rotate the coarse voltage adjustment knob 11 for coarse voltage adjustment, and rotate the fine voltage adjustment knob 12 for fine voltage adjustment. When the current and voltage are adjusted to their respective preset values, press the output button 13 to power on the external cylindrical electromagnet 2 and begin operation. Simultaneously, the cooling fan 18 starts operating to prevent overheating. While the external cylindrical electromagnet 2 is operating, the aforementioned knobs can be adjusted at any time for real-time control of the magnetic field strength. For example, if the blind end of the digestive tract begins to extend under electromagnetic traction and gradually approaches the surface of the patient's anus, the electromagnetic traction force can be reduced by rotating the coarse current adjustment knob 9 and the fine current adjustment knob 10 to prevent damage to the intestines caused by excessive traction.

[0045] The operation process of this utility model:

[0046] like Figure 7-Figure 8 As shown, the clinician surgically places a "teardrop"-shaped intestinal metal insert 1 at the blind end of the atretic rectum as required. The patient maintains a lithotomy position on the treatment couch, fully exposing the original anal opening. The clinician then connects an external cylindrical electromagnet 2 to the electromagnet controller, which is then connected to a 220V power supply. The electromagnet controller's main switch 14 is turned on, and the display 6 displays the current current and voltage. After setting the output parameters using the adjustment knob on the electromagnet controller, the output button 13 is pressed, and the electromagnetic traction device begins operation. Under the action of electromagnetic traction, the blind end of the rectum gradually approaches the anal skin surface. Considering the patient's braking and the heating of the external cylindrical electromagnet 2, traction can be performed for several short periods daily. X-rays are taken regularly to record the distance between the blind end of the rectum and the anal skin surface until the anorectal atresia requirements are met, ultimately completing anal reconstruction for patients with mid- to high-level anorectal atresia.

[0047] Figure 9 and Figure 10 This is a clinical trial photo of the utility model. The red circle indicates the simulated blind end of the rectum, in which the metal 1 is built into the intestine. It can be seen from the photo that the blind end is extended under the action of the external cylindrical electromagnet 2.

[0048] In summary, the "teardrop"-shaped intestinal metal insert 1 of the present invention can generate a force on the rectal blind end under the influence of the magnetic field of the external cylindrical electromagnet 2, thereby extending the blind end. When connected to a DC power source, the external cylindrical electromagnet 2 exerts a pulling force on the intestinal metal insert 1, achieving the blind end extension effect. The electromagnet controller converts AC power into DC power and adjusts the magnetic field strength of the external cylindrical electromagnet 2 as needed. This electromagnetic traction device can reduce patient trauma, provide controllable traction on the rectal blind end, and effectively improve the treatment of children with mid- to high-level rectal atresia.

Claims

1. A non-contact electromagnetic traction device for treating mid- and high-level anorectal atresia, characterized in that: It includes intestinal built-in metal (1), external cylindrical electromagnet (2) and electromagnet controller; The intestinal embedded metal (1) is in the shape of a water droplet, and the external cylindrical electromagnet (2) is capable of generating a magnetic field after being connected to a direct current, and the magnetic field acts on the intestinal embedded metal (1), providing a magnetic force to generate a pulling force on the blind end of the digestive tract; The electromagnet controller is used to regulate the voltage and / or current of the direct current, thereby regulating the magnetic field strength.

2. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 1, characterized in that: The intestinal built-in metal (1) is made of stainless steel throughout, and its surface is treated with titanium nitride coating.

3. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 1, characterized in that: The teardrop shape means that the whole body is smooth, and the diameter increases first and then decreases from one end to the other end, and the end with the smallest diameter has an arc-shaped top structure. Outside the arc-shaped top structure, the diameter of the intestinal embedded metal (1) at the smallest end ranges from 2 to 4 mm, the diameter at the other end ranges from 7 to 11 mm, and the diameter at the largest end ranges from 8 to 12 mm.

4. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 3, characterized in that: Outside the arc-shaped top structure, the distance between the smallest diameter end and the largest diameter of the intestinal built-in metal (1) ranges from 31 to 35 mm, and the distance between the other end and the largest diameter ranges from 5 to 9 mm.

5. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 3 or 4, characterized in that: The cross section of the other end of the intestinal built-in metal (1) is a perfect circle.

6. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 5, characterized in that: The diameter of the perfect circle is 8 mm, 9 mm, 10 mm, 11 mm or 12 mm, and the height is 40 mm, where the height refers to the distance between the top of the arc and the other end.

7. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to any one of claims 1 to 4, characterized in that: The external cylindrical electromagnet (2) is wound with 800 to 1400 turns of copper coil, and its outer shell is a pure iron shell with a diameter of 120 to 200 mm and a height of 120 to 200 mm. It is provided with an outlet (3) for connecting it to an electromagnet controller.

8. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 1, characterized in that: The electromagnet controller adopts an adjustable DC voltage-stabilized power supply to convert 220V AC power into 24V DC power to supply the external cylindrical electromagnet (2).

9. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 8, characterized in that: The adjustable DC regulated power supply comprises a current regulating module and a voltage regulating module.

10. The non-contact electromagnetic traction device for treating middle and high anorectal atresia according to claim 1, characterized in that: The electromagnet controller has a cooling fan (18) and overload protection inside, and a power supply interface (19) at the back.

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