A jejunal nutrition tube placement auxiliary system

Abstract

The present invention relates to the field of digital systems, and in particular to a jejunal nutrition tube placement auxiliary system. It comprises: a jejunal nutrition tube and a placement auxiliary module, the placement auxiliary module is used to generate a placement guidance instruction according to the corresponding guidance vector during the placement of the jejunal nutrition tube; the placement auxiliary module is executed according to the following steps: each time the driving motor rotates a guidance angle, the guidance vector at the current moment is obtained; the guidance vector is input into a target judgment model to generate guidance information corresponding to the current moment; to guide the insertion of a guide wire. The guidance vector includes a plurality of variable values ​​and fixed values. Through the combination of these latitude values, the relative position between the first guide magnet and the second guide magnet in the body can be more accurately reflected, so that the model can predict more accurate guidance information according to the above guidance vector. Since the guide terminal has a greater degree of freedom of movement in the stomach, it is easier for the guide terminal to pass through the pylorus to reduce the risk of damage to the stomach wall.

Description

Background Art

[0002] Jejunal feeding tube is a medical device used to provide enteral nutrition support, mainly for critically ill patients who cannot get enough nutrition through regular diet or nasogastric tube. This tube is thin in diameter and can be inserted through the nose or mouth or stomach wall puncture, and finally reaches the part of the small intestine (jejunum), thereby bypassing possible stomach problems and delivering nutrient solution directly to the small intestine.

[0003] In the prior art, medical staff usually insert the jejunal nutrition tube into the jejunum by hand based on their experience. However, in some patients, it is difficult for the jejunal nutrition tube to pass through the pylorus by itself by utilizing the peristalsis of the gastrointestinal tract, especially when the tube is placed through the nasal cavity or oral cavity. The nutrition tube needs to have a certain bend in the stomach to approach the pylorus. In order to improve the success rate of passing through the pylorus, a guide wire can be used to guide the catheter. Generally, the internal end of the guide wire is controlled by the operator, and the guide wire can be passed through the pylorus in conjunction with the peristalsis of the stomach itself. However, if the patient's gastric function is weak (that is, the gastric peristalsis is weak), it is very likely that the internal end of the guide wire cannot turn smoothly and hit the inner wall of the stomach, and usually the sensory function of these patients is also weak, and discomfort and pain cannot be fed back in time, so the operator cannot accurately know the position of the guide wire in the body, and in this case, it is very easy for the guide wire to damage the stomach wall. And because of the high difficulty of the tube placement operation, low operating convenience, and long operation time in the prior art, it is also urgent to carry out digital auxiliary transformation of the tube placement process. Summary of the invention

[0004] In view of the above technical problems, the technical solution adopted by the present invention is:

[0005] According to one aspect of the present invention, there is provided a jejunal nutrition tube placement auxiliary system, comprising: a jejunal nutrition tube and a placement auxiliary module, the placement auxiliary module being used to generate a placement guidance instruction according to a corresponding guidance vector during the placement of the jejunal nutrition tube;

[0006] The jejunal nutrition tube comprises: a nutrition catheter, a guide wire, a guide end, a first guide magnet and a driving motor;

[0007] The guide wire is inserted into the nutrition catheter, and the guide end is detachably connected to the internal end of the guide wire, and the guide end is made of elastic material; the external end of the guide wire is connected to the drive motor, and the drive motor is used to drive the guide wire to rotate, and the drive motor has a torque feedback mechanism;

[0008] The guide end includes: a ball and socket end, a swing arm and a second guide magnet;

[0009] One end of the swing arm is connected to the ball socket end, and the ball socket end is detachably connected to the inner end of the guide wire; the swing arm and the inner end of the guide wire are arranged at an obtuse angle;

[0010] The second guide magnet is embedded in the end portion of the swing arm away from the end of the ball socket; the first guide magnet is used to provide magnetic guidance for the second guide magnet;

[0011] The catheter placement assistance module is executed as follows:

[0012] placing a first guiding magnet in a guiding area corresponding to the pylorus outside the body;

[0013] Whenever the driving motor rotates a guiding angle, the guiding vector at the current moment is obtained; the guiding vector includes the specification information of the guiding wire, the insertion length of the guiding wire, the torque feedback value of the motor shaft end, the magnetic field strength between the first guiding magnet and the second guiding magnet, the user's height information and the catheterization path type identification;

[0014] Inputting the guidance vector into the target determination model to generate guidance information corresponding to the current moment; the guidance information is used to indicate the relative position information between the first guidance magnet and the second guidance magnet;

[0015] When the guiding information indicates that the guiding end is facing the first guiding magnet, the guiding wire continues to be inserted.

[0016] Furthermore, each time the driving motor rotates a guiding angle, the guiding vector at the current moment is obtained, including:

[0017] Whenever the driving motor rotates a guiding angle, a feedback sequence corresponding to the insertion length of the guiding wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guiding magnet and the second guiding magnet in a feedback cycle corresponding to the current angle is obtained;

[0018] The guidance vector corresponding to the current moment is formed according to the feedback sequence corresponding to the guide wire insertion length, the motor shaft end torque feedback value and the magnetic field strength between the first guide magnet and the second guide magnet in the feedback cycle corresponding to the current angle, as well as the guide wire specification information, the user's height information and the catheterization path type identifier.

[0019] Furthermore, the feedback sequence is obtained according to the following steps:

[0020] According to the value intervals corresponding to the insertion length of the guide wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet, the characteristic values ​​at multiple collection moments corresponding to the insertion length of the guide wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet in the entire feedback cycle are obtained;

[0021] The above-mentioned characteristic values ​​are arranged in the order of acquisition time to form a corresponding feedback sequence.

[0022] Furthermore, the guidance information includes:

[0023] The second guiding magnet is located on the right side of the first guiding magnet, the second guiding magnet is located in front of the first guiding magnet, the second guiding magnet is located on the left side of the first guiding magnet, and the second guiding magnet is away from the first guiding magnet.

[0024] Furthermore, a ball head structure is arranged at the inner end of the guide wire, and the ball head structure is embedded in the ball socket end.

[0025] Furthermore, the guide end is made of silicone, and a plurality of tensioning grooves are provided on the outer side wall of the ball and socket end; and a hydrophilic coating is applied on the inner side wall of the ball and socket end;

[0026] The tensioning through groove extends from the outer end side of the ball socket end head to a side close to the swing support arm, and the tensioning through groove is throughly arranged between the outer side wall and the inner side wall of the ball socket end head.

[0027] Furthermore, a limiting protrusion is arranged on the outer side wall of the ball head structure, and a limiting groove is arranged on the inner side wall of the ball socket end, and the limiting protrusion is embedded in the limiting groove.

[0028] Furthermore, an airway is provided in the guide wire, the ball head structure is an airbag, and the airway is connected to the airbag.

[0029] Furthermore, it also includes a silicone gasket, which is sandwiched between the airbag and the end of the ball socket.

[0030] Furthermore, it also includes an airway,

[0031] There is a channel inside the guide wire, and the ball head structure is an air bag.

[0032] The airway tube is inserted into the channel, one end of the airway tube is communicated with the airbag, and the other end of the airway tube is inserted into the side wall of the guide wire close to the external end.

[0033] The present invention has at least the following beneficial effects:

[0034] By installing an elastic guide end at a certain angle with the end of the guide wire at the end of the guide wire, and the guide end is made of an elastic material that is softer than the guide wire, the risk of the internal end damaging the stomach wall can be reduced due to the installation angle and elastic material of the guide end. At the same time, a driving motor is set to drive the guide end to rotate through the guide wire. Since the guide end is at a certain angle with the internal end of the guide wire, and the guide end itself rotates relative to the guide wire, the freedom of movement of the guide end in the stomach will be greater than the freedom of movement of the internal end of the existing guide wire, and it is easier to make the guide end pass through the pylorus, and it is not easy to get stuck at a certain position of the stomach wall, which can reduce the risk of damage to the stomach wall. In addition, the second guide magnet is embedded in the end of the swing arm away from the ball socket end, so that the guide end can be navigated in the body through the magnetic attraction between the first guide magnet set outside the body and the second guide magnet inside the body, so that the difficulty of the guide wire passing through the pylorus can be further reduced.

[0035] At the same time, after each rotation of the guiding angle of the jejunal feeding tube, the change in relevant data generates a corresponding guiding vector, and then the guiding vector is input into the target judgment model to generate the corresponding guiding information after the current adjustment, so as to roughly feedback the relative position information between the first guiding magnet and the second guiding magnet, and then reflect the positional relationship between the guiding end and the pylorus, so as to assist and guide the corresponding operator to perform the corresponding operation, thereby further reducing the difficulty of the guide wire passing through the pylorus. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 A schematic block diagram of the structure of a jejunal nutrition tube placement auxiliary system provided by an embodiment of the present invention;

[0038] Figure 2 A schematic flow chart of the execution steps of the catheter placement auxiliary module provided in an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the structure of a jejunal nutrition tube provided by an embodiment of the present invention;

[0040] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0041] Figure 5A schematic diagram of the structure of a guide end provided by an embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the cross-sectional structure of a guide wire provided in an embodiment of the present invention, in which a channel is provided and an air bag is connected via an airway tube.

[0043] Reference numerals:

[0044] 1. Nutrition catheter; 2. Guide wire; 21. Channel; 22. Airway tube; 23. Airbag; 3. Guide end; 31. Ball and socket end; 32. Tensioning slot; 33. Swing arm; 34. Second guide magnet; 4. Drive motor. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0046] As a possible embodiment of the present invention, Figure 1 As shown, a jejunal nutrition tube placement auxiliary system is provided, which includes a jejunal nutrition tube and a placement auxiliary module. The placement auxiliary module is used to generate a placement guidance instruction according to the corresponding guidance vector during the jejunal nutrition tube placement process to guide the placement of the tube.

[0047] like Figure 2 As shown, the catheter placement auxiliary module in this embodiment is executed according to the following steps:

[0048] S100: placing a first guiding magnet in a guiding area corresponding to the pylorus outside the body.

[0049] S200: Whenever the driving motor 4 rotates a guiding angle, the guiding vector at the current moment is obtained. The guiding vector includes the specification information of the guiding wire 2, the insertion length of the guiding wire 2, the torque feedback value of the motor shaft end, the magnetic field strength between the first guiding magnet and the second guiding magnet 34, the user's height information and the catheterization path type identification. The driving motor 4 in this embodiment can be a servo motor with a complete feedback system.

[0050] The specification information of the guide wire 2 includes information such as the material, size specification information, and whether it is a hollow structure of the guide wire 2. The magnetic field strength between the first guide magnet and the second guide magnet 34 can be measured by a gauss meter or a magnetometer. In addition, the guide vector can also include a change value of the magnetic field strength between the first guide magnet and the second guide magnet 34. When the two magnets are close, their respective magnetic fields will overlap each other. This means that at a certain point in space, the total magnetic field is the vector sum of the magnetic fields generated by the two magnets. If the same magnetic poles of the two magnets (such as the North Pole to the North Pole) are close, the magnetic fields between them will repel each other, resulting in a weakening of the magnetic field strength in the area. Therefore, in the present embodiment, the magnetic field strength between the first guide magnet and the second guide magnet 34 can be the magnetic field strength at one or several spatial measurement points that are convenient to measure in actual use and can represent the relative position between the first guide magnet and the second guide magnet 34.

[0051] Specifically, S200 includes:

[0052] S201: Whenever the driving motor 4 rotates a guiding angle, a feedback sequence corresponding to the insertion length of the guide wire 2, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guiding magnet and the second guiding magnet 34 in a feedback cycle corresponding to the current angle is obtained.

[0053] The feedback sequence is obtained as follows:

[0054] S211: According to the value intervals corresponding to the insertion length of the guide wire 2, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet 34, the characteristic values ​​at multiple collection moments corresponding to the insertion length of the guide wire 2, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet 34 in the entire feedback cycle are obtained.

[0055] S221: Arrange the above-mentioned characteristic values ​​in the order of acquisition time to form a corresponding feedback sequence.

[0056] Taking the feedback cycle as 2min and the value interval of the motor shaft end torque feedback value as 5s as an example, the feedback sequence corresponding to the motor shaft end torque feedback value is explained.

[0057] For example, the values ​​obtained within 2 minutes according to the interval of taking values ​​are 0.102 N·m, 0.092 N·m, 0.113 N·m, 0.083 N·m, 0.124 N·m, 0.200 N·m, etc., and finally arranged in chronological order to form a time-based sequence, in which the transformation between each value can reflect the following change of the above-mentioned dimensional quantity after the adjustment of the guide angle. Usually, due to the long insertion length of the guide wire 2 and the complex situation in the body, after the rotation adjustment of the guide wire 2, this change will be transmitted by the guide wire 2 and gradually spread to the subsequent components in the system, and then each component will make a corresponding response based on this change, and this response is also a continuous change process.

[0058] In some embodiments, the generation process of the above feedback sequence can be implemented according to the following code:

[0059] import time

[0060] import random

[0061] def get_torque_feedback():

[0062] """Get torque feedback from the motor"""

[0063] return random.uniform(0, 3) # The torque value is between 0 and 3

[0064] def collect_data(interval=5, duration=120):

[0065] """

[0066] Collect torque data at specified intervals

[0067] :param interval: collection interval (seconds)

[0068] :param duration: the duration of the entire acquisition process (seconds)

[0069] :return: A vector sequence containing the torque values ​​in chronological order

[0070] """

[0071] data=[]

[0072] start_time = time.time()

[0073] while(time.time()-start_time) <duration:

[0074] torque_value=get_torque_feedback()

[0075] timestamp=time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())

[0076] print(f"Acquisition time:{timestamp},Torque value:{torque_value:.2f}")

[0077] data.append(torque_value)

[0078] time.sleep(interval)

[0079] return data

[0080] # Collect data for 120 seconds

[0081] vector_sequence=collect_data(duration=120)

[0082] # Output vector sequence

[0083] print(vector_sequence)

[0084] In the above code, the function get_torque_feedback() obtains the torque value from the motor. In actual applications, this function needs to be replaced with the corresponding code or function that obtains data from the actual motor. collect_data(interval=5,duration=120 is responsible for calling get_torque_feedback() at a fixed time and storing the torque value collected each time in the list data. Use time.sleep(interval) to control the collection frequency.

[0085] Therefore, based on the characteristics of this scenario, this embodiment forms a time-based feedback sequence for the above-mentioned quantities that may change (i.e., the insertion length of the guide wire 2, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet 34). The multiple values ​​in this feedback sequence can roughly reflect the change trend of the quantity of the corresponding dimension. Therefore, the feedback sequence can reflect more system change information, so that the target model can better capture the corresponding change characteristics, and then the relative position between the first guide magnet and the second guide magnet 34 can be predicted more accurately.

[0086] S202: Based on the feedback sequence corresponding to the insertion length of the guide wire 2, the torque feedback value of the motor shaft end and the magnetic field strength between the first guide magnet and the second guide magnet 34 in the feedback cycle corresponding to the current angle, and the specification information of the guide wire 2, the user's height information and the catheterization path type identifier, a guidance vector corresponding to the current moment is formed.

[0087] S300: Inputting the guidance vector into the target determination model to generate guidance information corresponding to the current moment.

[0088] The target determination model in this embodiment can be an existing deep neural network model (such as a multi-layer perceptron or a convolutional neural network) or other existing classification regression models. After data training, these models can determine the relative position between the first guide magnet and the second guide magnet 34 through the input guidance vector.

[0089] Specifically, when collecting training data, other existing medical imaging equipment can be used to determine the relative position between the first guide magnet and the second guide magnet 34 when different guide vectors correspond to each other. In this way, labeled training samples are formed. In this embodiment, each characteristic value in the guide vector includes multiple variable values ​​and fixed values. Through the combination of these latitude values, the relative position between the first guide magnet and the second guide magnet 34 in the body can be more accurately reflected, so that the model can predict more accurate guidance information based on the above-mentioned guide vector.

[0090] S400: When the guiding information indicates that the guiding end 3 is directed toward the first guiding magnet, the guiding wire 2 is continued to be inserted.

[0091] Specifically, the output results of the target determination model can be of multiple types, such as the second guide magnet 34 is located on the right side of the first guide magnet, the second guide magnet 34 is located in front of the first guide magnet, the second guide magnet 34 is located on the left side of the first guide magnet, and the second guide magnet 34 is away from the first guide magnet. Therefore, the operator can be guided whether to plug or unplug the guide wire 2 or in which direction to rotate and adjust it according to the above results. In this way, the operator is guided to operate the guide wire 2 through the pylorus, thereby reducing the difficulty of the guide wire 2 through the pylorus and improving the success rate of the jejunal nutrition tube placement.

[0092] like Figure 3 and Figure 4 As shown, the jejunal nutrition tube in this embodiment includes: a nutrition catheter 1, a guide wire 2, a guide end 3, a first guide magnet and a drive motor 4.

[0093] The guide wire 2 is inserted into the nutrition catheter 1, and the guide terminal 3 is detachably connected to the internal end of the guide wire 2. The guide terminal 3 is made of elastic material, and the external end of the guide wire 2 is connected to the drive motor 4, which is used to drive the guide wire 2 to rotate, and the drive motor 4 has a torque feedback mechanism. Before the guide wire 2 passes through the pylorus, whether it is a way of inserting the nutrition catheter 1 through the nasal cavity or the oral cavity, or a way of inserting the nutrition catheter 1 through gastric wall puncture, the overall bending degree of the guide wire 2 is not large, so that the guide wire 2 can rotate as a whole under the drive of the drive motor 4, and then drive the guide terminal 3 to rotate. At the same time, in order to smoothly rotate the guide wire 2 and reduce the probability of the guide wire 2 being entangled and knotted, the speed of the drive motor 4 in the present embodiment to complete a guide angle is set to be low, such as 0.5° / s, and the size of the guide angle is also small, such as the guide angle can be 5°.

[0094] Specifically, since the guide terminal 3 needs to enter the human body, the material of the guide terminal 3 needs to have biocompatibility, elasticity and softness to ensure the safety and comfort of the patient. In this embodiment, the guide terminal 3 can be made of materials such as silicone, rubber, or thermoplastic elastomer. In addition, in this embodiment, in order to facilitate the replacement of the guide terminal 3 or to separate the guide terminal 3 from the guide wire 2 in the body, the guide wire 2 and the guide terminal 3 are set to be detachably connected.

[0095] like Figure 4 and Figure 5 As shown, the guide end 3 includes a ball and socket end 31 , a swing arm 33 and a second guide magnet 34 .

[0096] One end of the swing arm 33 is connected to the ball and socket end 31, and the ball and socket end 31 is detachably connected to the body end of the guide wire 2. The swing arm 33 and the part of the guide wire 2 near the body end are arranged at an obtuse angle.

[0097] In this embodiment, the detachable connection structure between the guide end 3 and the inner end of the body adopts a detachable ball joint structure. Specifically, one end of the swing arm 33 is set as a ball socket end 31 structure. The inner end of the guide wire 2 is provided with a ball head structure, and the ball head structure is embedded in the ball socket end 31. Furthermore, in order to adjust the clamping force between the ball socket end 31 and the ball head structure, a plurality of tensioning grooves 32 can be provided on the outer wall of the ball socket end 31. The tensioning groove 32 extends from the outer end side of the ball socket end 31 to the side close to the swing arm 33, and the tensioning groove 32 is provided between the outer wall and the inner wall of the ball socket end 31. Therefore, by providing a plurality of tensioning grooves 32, the fastening force of the entire outer wall of the ball socket end 31 can be changed, and then the clamping force between the ball socket end 31 and the ball head structure can be adjusted.

[0098] In addition, a hydrophilic coating can be applied to the inner wall of the ball socket end 31. Since there are human tissues or liquids in the intestines, when the ball socket end 31 stays in the body for a long time, the inner wall of the ball socket end 31 is easily exposed to water, thereby making the hydrophilic coating more lubricated, so that the in-body end of the guide wire 2 can be easily removed from the ball socket end 31 of the guide end 3. In addition, the outer side of the entire swing arm 33 can also be coated with a hydrophilic coating, thereby reducing its friction in the human body and reducing the discomfort caused by friction with the stomach and intestines during catheterization.

[0099] In actual use, after the guide end 3 is connected to the end of the guide wire 2, since the guide end 3 and the end of the guide wire 2 are set at an obtuse angle, the equivalent diameter of the connected structure (that is, the maximum diameter when the swing arm 33 rotates around the guide wire 2) will be larger than the diameter of the guide wire 2, and it is very likely to be larger than the inner diameter of the nutrition catheter 1. However, since the guide end 3 is made of silicone, it can produce a certain bending deformation, and then the guide head can be smoothly inserted into the nutrition catheter 1. After the guide end 3 enters the body, it will automatically return to its original shape. In order to reduce the friction between the guide end 3 and the nutrition catheter 1, the guide end 3 can also be moistened before inserting into the nutrition catheter 1.

[0100] Furthermore, in order to ensure that the angle between the swing arm 33 and the inner end of the guide wire 2 does not change arbitrarily, a limiting protrusion is provided on the outer wall of the ball head structure, and a limiting groove is provided on the inner wall of the ball socket end 31, and the limiting protrusion is embedded in the limiting groove. Through the cooperation of the limiting protrusion and the limiting groove, the effect of maintaining the stability of the posture between the swing arm 33 and the guide wire 2 can be improved. Specifically, the number, position and shape of the limiting protrusion and the limiting groove can be adjusted according to the actual scene needs.

[0101] The second guide magnet 34 is embedded in one end of the swing arm 33 away from the ball socket end 31. The first guide magnet is used to guide the second guide magnet 34 magnetically.

[0102] The first guide magnet and the second guide magnet can both be made of magnetic materials (such as iron, cobalt, and nickel) or magnets, and can be selected according to the guiding effect in actual use. In actual use, the first guide magnet is placed in the guiding area corresponding to the pylorus outside the patient's body. The midpoint between the patient's xiphoid process and the umbilicus is offset to the right by about 2-3 cm, and the position roughly corresponding to the pylorus outside the body can be roughly located, and the guiding area is the area around this position. Thus, the first guide magnet can be moved outside the body to magnetically guide the second guide magnet 34 so as to pass through the pylorus smoothly.

[0103] When the nutrition catheter 1 passes through the pylorus and the guide wire 2 is no longer needed for guidance, the guide wire 2 can be withdrawn. If the equivalent diameter of the structure after the guide end 3 is connected to the end of the guide wire 2 is smaller than the nutrition catheter 1, the guide end 3 can be smoothly withdrawn with the guide wire 2, and the guide head can be replaced through the detachable structure.

[0104] If the equivalent diameter of the structure after the guide end 3 is connected to the end of the guide wire 2 is larger than the nutrition catheter 1, then when the guide wire 2 is withdrawn, the guide end 3 will be stuck in the port of the nutrition catheter 1. At this time, if the guide wire 2 is still withdrawn, it is very likely that the nutrition catheter 1 will be taken out together. Therefore, in this embodiment, a plurality of tensioning grooves 32 are also provided on the outer wall of the ball socket end 31 to adjust the clamping force between the ball socket end 31 and the ball head structure; and a hydrophilic coating is also provided on the inner wall of the ball socket end 31 to reduce the friction between the ball socket end 31 and the ball head structure. Through the above setting, the clamping force between the ball socket end 31 and the ball head structure can be adjusted, thereby setting the clamping force to be less than the maximum limiting force that the end of the nutrition catheter 1 can provide for the end of the guide wire 2, that is, when the guide wire 2 is withdrawn, under the restriction of the port of the nutrition catheter 1, the guide end 3 can be smoothly detached in the intestine and discharged from the body later.

[0105] In addition, in this embodiment, the hydrophilic layer coated on the inner wall of the socket end 31 or on the outer wall of the ball head structure can be replaced with a short-term biocompatible coating material, such as polylactic acid or an existing sustained-release drug coating material. By setting the thickness or dissolution time of the coating, the stable connection time between the socket end 31 and the ball head structure can be adjusted. Then, the guide end 3 and the guide wire 2 can be automatically detached after a certain time.

[0106] As another embodiment of the present invention, the detachable structure between the guide wire 2 and the guide end 3 can also be arranged according to the following structure. Specifically, an airway is arranged in the guide wire 2, and the ball head structure is an airbag 23, and the airway is connected to the airbag 23. A silicone gasket is also included, and the silicone gasket is sandwiched between the airbag 23 and the ball socket end 31.

[0107] Therefore, by inflating and deflating the airbag 23, the connection and detachment between the guide end 3 and the guide wire 2 can be adjusted, so that the guide wire 2 can be withdrawn more conveniently.

[0108] However, the method of directly setting the airway in the guide wire 2 may affect the flexibility of the guide wire 2 due to the air pressure in the airway when the airbag 23 is kept inflated. In addition, the method of directly setting the airway in the guide wire 2 also cannot ensure the airtightness of the airway.

[0109] Therefore, if Figure 6 As shown, this embodiment also provides another structure for inflating and deflating the airbag 23. Specifically, the structure includes an air guide tube 22. A channel 21 is provided in the guide wire 2. The air guide tube 22 is passed through the channel 21. One end of the air guide tube 22 is connected to the airbag 23, and the other end of the air guide tube 22 is passed through the side wall of the guide wire 2 close to the external end.

[0110] During use, the air bag 23 can be inflated and deflated through the air guide tube 22, which can avoid the direct influence of air pressure on the guide wire 2 and improve air tightness. The air bag 23 can be made of rubber material.

[0111] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0112] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by combining software with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0113] In an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.

[0114] It will be appreciated by those skilled in the art that various aspects of the present invention may be implemented as a system, method or program product. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as a "circuit", "module" or "system".

[0115] The electronic device according to this embodiment of the present invention is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0116] The electronic device is presented in the form of a general-purpose computing device. The components of the electronic device may include, but are not limited to: the at least one processor mentioned above, the at least one storage device mentioned above, and a bus connecting different system components (including storage devices and processors).

[0117] The storage stores program codes, which can be executed by the processor, so that the processor executes the steps according to various exemplary embodiments of the present invention described in the above “Exemplary Method” section of this specification.

[0118] The memory may include readable media in the form of volatile memory, such as random access memory (RAM) and / or cache memory, and may further include read only memory (ROM).

[0119] The storage may also include a program / utility having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0120] The bus may represent one or more of several types of bus structures including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures.

[0121] The electronic device may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may communicate with one or more devices that enable a user to interact with the electronic device, and / or may communicate with any device that enables the electronic device to communicate with one or more other computing devices (e.g., routers, modems, etc.). This communication may be performed through an input / output (I / O) interface. In addition, the electronic device may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) through a network adapter. The network adapter communicates with other modules of the electronic device through a bus. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0122] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes a number of instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0123] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention may also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present specification.

[0124] The program product may adopt any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, a system, device or component of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0125] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0126] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0127] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0128] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0129] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0130] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A jejunal nutrition tube placement auxiliary system, characterized in that: include: A jejunal nutrition tube and tube placement auxiliary module, wherein the tube placement auxiliary module is used to generate a tube placement guidance instruction according to the corresponding guidance vector during the jejunal nutrition tube placement process; The jejunal nutrition tube comprises: a nutrition catheter, a guide wire, a guide end, a first guide magnet and a drive motor; The guide wire is inserted into the nutrition catheter, and the guide end is detachably connected to the internal end of the guide wire, and the guide end is made of elastic material; the external end of the guide wire is connected to the drive motor, and the drive motor is used to drive the guide wire to rotate, and the drive motor has a torque feedback mechanism; the elastic material is silicone or rubber or thermoplastic elastomer; The guide end includes: a ball and socket end, a swing arm and a second guide magnet; One end of the swing arm is connected to the ball and socket end, and the ball and socket end is detachably connected to the inner end of the guide wire; the swing arm and the inner end of the guide wire are arranged at an obtuse angle; The second guide magnet is embedded in the end portion of the swing arm away from the ball socket end; the first guide magnet is used to magnetically guide the second guide magnet; The catheter placement auxiliary module is executed according to the following steps: placing a first guiding magnet in a guiding area corresponding to the pylorus outside the body; Whenever the driving motor rotates a guiding angle, a guiding vector at the current moment is obtained; the guiding vector includes guide wire specification information, guide wire insertion length, motor shaft end torque feedback value, magnetic field strength between the first guiding magnet and the second guiding magnet, user height information and catheter placement path type identification; Inputting the guidance vector into the target determination model to generate guidance information corresponding to the current moment; the guidance information is used to indicate the relative position information between the first guidance magnet and the second guidance magnet; When the guiding information is that the guiding end is directed toward the first guiding magnet, the guiding wire continues to be inserted.

2. The jejunal feeding tube placement auxiliary system according to claim 1, characterized in that: Whenever the drive motor rotates a guidance angle, the guidance vector at the current moment is obtained, including: Whenever the driving motor rotates a guiding angle, a feedback sequence corresponding to the insertion length of the guiding wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guiding magnet and the second guiding magnet in a feedback cycle corresponding to the current angle is obtained; The guidance vector corresponding to the current moment is formed according to the feedback sequence corresponding to the guide wire insertion length, the motor shaft end torque feedback value and the magnetic field strength between the first guide magnet and the second guide magnet in the feedback cycle corresponding to the current angle, as well as the guide wire specification information, the user's height information and the catheterization path type identifier.

3. The jejunal feeding tube placement auxiliary system according to claim 2, characterized in that: The feedback sequence is obtained according to the following steps: According to the value intervals corresponding to the insertion length of the guide wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet, the characteristic values ​​at multiple collection moments corresponding to the insertion length of the guide wire, the torque feedback value of the motor shaft end, and the magnetic field strength between the first guide magnet and the second guide magnet in the entire feedback cycle are obtained; The above-mentioned characteristic values ​​are arranged in the order of acquisition time to form a corresponding feedback sequence.

4. The jejunal feeding tube placement auxiliary system according to claim 2, characterized in that: The guidance information includes: The second guiding magnet is located on the right side of the first guiding magnet, the second guiding magnet is located directly in front of the first guiding magnet, the second guiding magnet is located on the left side of the first guiding magnet, and the second guiding magnet is away from the first guiding magnet.

5. The jejunal feeding tube placement auxiliary system according to claim 1, characterized in that: A ball head structure is arranged at the inner end of the guide wire, and the ball head structure is embedded in the ball socket end.

6. The jejunal feeding tube placement auxiliary system according to claim 5, characterized in that: The guide end is made of silica gel, and a plurality of tensioning grooves are provided on the outer side wall of the ball and socket end; a hydrophilic coating is applied on the inner side wall of the ball and socket end; The tensioning through groove extends from the outer end side of the ball socket end head to the side close to the swing arm, and the tensioning through groove is through-set between the outer side wall and the inner side wall of the ball socket end head.

7. The jejunal feeding tube placement auxiliary system according to claim 5, characterized in that: A limiting protrusion is arranged on the outer side wall of the ball head structure, and a limiting groove is arranged on the inner side wall of the ball socket end, and the limiting protrusion is embedded in the limiting groove.

8. The jejunal feeding tube placement auxiliary system according to claim 5, characterized in that: An airway is arranged in the guide wire, the ball head structure is an airbag, and the airway is communicated with the airbag.

9. The jejunal feeding tube placement auxiliary system according to claim 8, characterized in that: It also includes a silicone gasket, which is sandwiched between the airbag and the end of the ball socket.

10. The jejunal feeding tube placement auxiliary system according to claim 5, characterized in that: Also includes airway, The guide wire is provided with a channel, and the ball head structure is an air bag. The airway tube is inserted into the channel, one end of the airway tube is communicated with the airbag, and the other end of the airway tube is inserted into the side wall of the guide wire close to the external end.

Images