Paster induction type stomach tube based on magnetic positioning

Abstract

The invention relates to the technical field of stomach tubes, and particularly discloses a patch induction type stomach tube based on magnetic localization, which comprises a catheter head end, a magnetic induction patch and a signal processing module, the catheter head end comprises a head tip, the head shape of the head tip is smooth, the side surface of the head tip is provided with a side hole, the inner side of the side hole is provided with an inclined surface, and the magnetic induction patch is arranged on the inclined surface. The pipe blocking cover is installed in the side hole, a connecting groove is formed in the tip of the head, and the guide wire is installed in the connecting groove for positioning. By arranging the magnetic mark, real-time, non-invasive and high-precision monitoring of the position of the stomach tube is achieved through magnetic signal interaction between the magnetic mark arranged at the head end of the guide wire and the in-vitro wearable magnetic induction patch, the radiation risk of traditional X-ray positioning is effectively avoided, the positioning accuracy and reliability are remarkably improved, the misplacement risk is reduced, and the positioning accuracy and reliability are improved. The device is especially suitable for clinical scenes such as ICU and pediatrics with high requirements for operation safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gastric tube, more particularly to a patch inductive gastric tube based on magnetic positioning. BACKGROUND

[0002] Gastric tube placement is a common clinical technique, which is used for enteral nutrition support, gastrointestinal decompression or drug administration. The traditional gastric tube positioning methods mainly include auscultation air-water sound method, gastric juice suction method, observation bubble method and X-ray examination. The auscultation method depends on the experience of the operator, and the error is large; the gastric juice suction method and the observation bubble method are simple, but cannot realize real-time monitoring, and the risk of misplacement into the airway or esophagus is high; the X-ray examination has high accuracy, but has the problems of radiation exposure, fixed equipment and inconvenient operation, especially not suitable for critical patients or bedside operation. In addition, the existing gastric tube lacks built-in positioning auxiliary structure, and cannot realize precise and real-time position feedback, so there is an urgent need for a non-invasive, real-time and high-precision gastric tube positioning system in the clinic. SUMMARY

[0003] In order to overcome the above-mentioned defects of the prior art, the present application provides a patch inductive gastric tube based on magnetic positioning, which realizes real-time confirmation of whether the gastric tube is placed in the stomach through the induction signal of the special material at the head end of the guide wire and the external device, solves the defects of the traditional positioning method, and solves the problems existing in the background art.

[0004] The present application provides the following technical scheme: a patch inductive gastric tube based on magnetic positioning, comprising a catheter head end, a magnetic induction patch and a signal processing module, the catheter head end comprises a head tip, the head of the head tip is smooth, a side hole is formed in the side of the head tip, an inclined surface is formed in the inner side of the side hole, a pipe plugging cap is installed inside the side hole, a connecting groove is formed in the inside of the head tip, a guide wire is installed inside the connecting groove for positioning, an electric control assembly is installed on the tail end connector, a food injection port plug and a water injection port plug are installed on the side of the tail end connector, a first cap and a second cap are installed on the front of the food injection port plug and the water injection port plug, and the water injection port plug is installed on the side of the food injection port plug. Further, an electric control assembly is built-in in the inside of the catheter head end, an electric connector, a guide wire and a magnetic marker jointly constitute the electric control assembly, the electric connector is installed on the tail end connector, and is used for the guide wire, the magnetic marker adopts an ultra-thin flexible neodymium iron boron magnetic sheet, the surface is coated with a biocompatible coating, and a multi-magnetic pole array and a specific direction arrangement design are adopted, the magnetic marker adopts a degradable magnetic material (Fe3O4 nanoparticle compound), the coating is an antibacterial coating containing silver ions, and the infection risk is further reduced.

[0005] Further, the tube blocking cap is installed on the guide wire through a connecting rod, a torsional spring is installed at one end of the connecting rod, and the torsional spring makes the tube blocking cap always adhere to the inner wall of the head tip.

[0006] Further, the head of the electric connector is provided with a threaded groove, and an external power supply device is connected with the electric control assembly through the threaded groove to input current to the magnetic marker.

[0007] Further, the magnetic induction patch is a wearable device, the magnetic induction patch is composed of an adhesive dressing and a polyimide base material, and a plurality of magnetometer sensors are built-in, and the magnetic induction patch is attached to the abdominal surface of a patient, wherein a signal processing module, a dynamic calibration unit and a display alarm unit are installed between the adhesive dressing and the polyimide base material.

[0008] Further, the signal processing module comprises a filtering unit and a microprocessor, which can remove periodic interference caused by heartbeat and respiration and perform real-time signal analysis.

[0009] Further, the display alarm unit provides a multi-modal alarm function, including sound warning, light signal and terminal APP push.

[0010] Further, the dynamic calibration unit can automatically record the anatomical position characteristics of the stomach after initial positioning and compare the offset in real time.

[0011] An inductive gastric tube magnetic positioning method, the specific steps are as follows: S1: Insert the guide wire into the inside of the catheter, rotate the electric connector when the guide wire reaches the bottom, so that the head of the guide wire enters the inside of the connecting groove, and the opposite hole of the tube blocking cap is closed at this time, the electric connector is electrically connected with the external device through the threaded groove, the magnetic marker on the guide wire is activated, and the magnetic marker has the ability to form a magnetic field; S2: Wear the magnetic induction patch to the stomach of the patient's chest, test the magnetic field effect of the magnetic marker, and establish an individualized magnetic field baseline; S3: Gradually place the catheter into the gastric tube, and detect the magnetic field change in real time through the patch sensor, and the signal processing module collects the position information of the magnetic marker at the head end of the catheter from the patch sensor, analyzes the magnetic field data, and judges the specific position of the catheter head end in the gastric tube; S4: When the position is detected to be abnormal, trigger the alarm system to perform sound warning, light signal and terminal APP push; S5: When the catheter insertion is completed, disconnect the electrical connection of the external device, pull it out by pressing the electrical connector, and because a slope is opened at the side hole, the pipe cover is naturally removed by the guide wire and directly pulled out, exposing the side hole, at this time, press the first cap and the second cap on the tail end connector to seal the tail end connector, and when corresponding operation is needed, inject water, nutrient solution or gastric juice through the syringe.

[0012] Technical effects and advantages of the present application: 1. The present application is provided with a magnetic marker, which is beneficial to the magnetic signal interaction between the magnetic marker at the head end of the guide wire and the wearable magnetic induction patch outside the body, realizing real-time, non-invasive and high-precision monitoring of the position of the gastric tube, effectively avoiding the radiation risk of traditional X-ray positioning, significantly improving the positioning accuracy and reliability, reducing the risk of misplacement, and being especially suitable for clinical scenes such as ICU and pediatric department which have high requirements for operation safety.

[0013] 2. The present application is provided with a magnetic induction patch, which is beneficial to good clinical applicability and system integration. The magnetic induction patch is designed with flexible material and adhesive dressing, which is comfortable to wear and has strong adhesion, and does not affect the patient's activity. The system supports multi-mode alarm function, including sound, light and APP reminder, which is convenient for medical staff to respond in time. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0015] Figure 2 It is a sectional view of the catheter head end structure of the present application.

[0016] Figure 3 It is an assembly schematic diagram of the catheter head end structure of the present application.

[0017] Figure 4 It is a schematic diagram of the tail end connector structure of the present application.

[0018] Figure 5 It is a schematic diagram of the magnetic induction patch structure of the present application.

[0019] Figure 6 It is a schematic diagram of an inductive gastric tube magnetic positioning method of the present application.

[0020] The reference signs are: 1, catheter head end; 101, head tip; 102, side hole; 103, connecting groove; 2, catheter; 3, tail end connector; 4, electric control assembly; 401, electrical connector; 402, guide wire; 403, magnetic marker; 5, food injection port plug cap; 6, water injection port plug cap; 7, connecting rod; 8, pipe cover; 9, first cap; 10, second cap. DETAILED DESCRIPTION

[0021] The technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples. The patch inductive gastric tube based on magnetic positioning involved in the present application is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0022] With reference to Figures 1-3 The present application provides a patch inductive gastric tube based on magnetic positioning, which comprises a catheter head end 1, a magnetic induction patch and a signal processing module. The catheter head end 1 comprises a head tip 101. The head of the head tip 101 is smooth to reduce damage to the nasal cavity, throat and esophagus caused by insertion. A side hole 102 is formed in the side of the head tip 101. An inner side of the side hole 102 is provided with an inclined surface. A pipe plugging cap 8 is installed inside the side hole 102. The inclined surface facilitates smooth removal of the pipe plugging cap 8. A connecting groove 103 is formed in the inside of the head tip 101. A guide wire 402 is installed inside the connecting groove 103 for positioning. In the present embodiment, it is particularly noted that the tail end connector 3 is provided with an electric control assembly 4. The side of the tail end connector 3 is provided with a food injection port plugging cap 5 and a water injection port plugging cap 6. The front of the food injection port plugging cap 5 and the water injection port plugging cap 6 is provided with a first cap port 9 and a second cap port 10. The water injection port plugging cap 6 is installed on the side of the food injection port plugging cap 5.

[0023] The main difference between the present embodiment and the prior art is that in the present embodiment, the position information of the catheter is collected in real time through the induction signal of the special material at the head end of the guide wire and the external device, and it is confirmed whether the gastric tube is placed in the stomach. Specifically, the magnetic marker 403 is used. The above structure is the main structure of the present embodiment, which solves the problem that the traditional positioning method cannot accurately grasp the position of the catheter. The electric connection mode and the electric signal transmission mode are prior art, and the specific structure of the present embodiment will not be described in detail.

[0024] With reference to Figures 2-4 The inside of the catheter head end 1 is provided with the electric control assembly 4. The electric connection head 401, the guide wire 402 and the magnetic marker 403 jointly constitute the electric control assembly 4. The electric connection head 401 is installed on the tail end connector 3 and is used for the guide wire 402. The magnetic marker 403 adopts an ultra-thin flexible neodymium iron boron magnetic sheet, the surface of which is wrapped with a biocompatible coating, and a multi-magnetic-pole array and a specific direction arrangement design are adopted.

[0025] The magnetic marker 403 adopts a degradable magnetic material (Fe3O4 nanoparticle compound), and the coating is an antibacterial coating containing silver ions, which further reduces the risk of infection.

[0026] In this embodiment, it needs to be specifically pointed out that the connecting groove 103 is used to fix the head of the guide wire 402, so as to avoid the movement of the pipe plug cover 8 and the guide wire 402 during insertion, and affect the stability of the catheter 2 during insertion.

[0027] Referring to Figure 3 , the pipe plug cover 8 is installed on the guide wire 402 through the connecting rod 7, the connecting rod 7 is installed with a torsional spring at one end of the guide wire 402, the torsional spring makes the pipe plug cover 8 always close to the inner wall of the head tip 101, so that the pipe plug cover 8 is directly installed in the side hole 102 after insertion, the connecting rod 7 and the pipe plug cover 8 are non-metal materials, so as to avoid interference with the magnetic field formed by the magnetic marker 403, and affect the detection effect.

[0028] In this embodiment, it needs to be specifically pointed out that the guide wire 402 is inserted into the inside of the catheter 2, and the electric connector 401 is rotated when the guide wire 402 reaches the bottom, so that the head of the guide wire 402 enters the inside of the connecting groove 103, and the pipe plug cover 8 closes the outlet of the side hole 102.

[0029] Referring to Figure 4 , the head of the electric connector 401 is provided with a threaded groove, and the external power supply equipment is connected with the electric control assembly 4 through the threaded groove, so as to input current to the magnetic marker 403, and during installation, the threaded groove is electrically connected with the external equipment, so as to activate the magnetic marker 403 on the guide wire 402, so that the magnetic marker 403 has the ability to form a magnetic field.

[0030] In this embodiment, it needs to be specifically pointed out that after the catheter 2 is inserted, the electric connection of the external equipment is disconnected, and the electric connector 401 is pulled out, and since the side hole 102 is provided with an inclined surface, the pipe plug cover 8 is naturally separated under the pulling force.

[0031] Referring to Figures 5-6 , the magnetic induction patch is a wearable device, which is composed of an adhesive dressing and a polyimide base material, and is internally provided with a plurality of magnetometer sensors, and is attached to the body surface of the patient's abdomen, wherein the adhesive dressing and the polyimide base material are provided with a signal processing module, a dynamic calibration unit and a display alarm unit, the signal processing module includes a filter unit and a microprocessor, which can remove the periodic interference caused by heartbeat and respiration, and can perform real-time signal analysis.

[0032] The display alarm unit provides multi-modal alarm function, including sound warning, light signal and terminal APP push.

[0033] The dynamic calibration unit can automatically record the anatomical position characteristics of the stomach after initial positioning, and compare the offset in real time.

[0034] In this embodiment, it needs to be specifically pointed out that the magnetic induction patch is uniformly distributed in the key anatomical region of the abdomen, including the sub-xiphoid and periumbilical region, and a high-sensitivity magnetometer array is built-in. The magnetic marker 403 interacts with the magnetic induction patch through the magnetic field signal, and the position of the gastric tube is determined in real time.

[0035] The working principle of the present application is as follows: The main problem solved by the present embodiment is that the position information of the catheter is collected in real time through the induction signal of the special material at the head end of the guide wire and the external device, and it is confirmed whether the gastric tube is placed in the stomach, solving the problem that the traditional positioning method cannot accurately grasp the position of the catheter.

[0036] An inductive gastric tube magnetic positioning method, the specific steps are as follows: S1: Insert the guide wire 402 into the inside of the catheter 2, rotate the electric connector 401 when the guide wire 402 reaches the bottom, so that the head of the guide wire 402 enters the inside of the connecting groove 103, and the opposite hole 102 of the tube plug 8 is closed at the same time. At this time, the electric connection is made through the threaded groove and the external device, the magnetic marker 403 on the guide wire 402 is activated, so that the magnetic marker 403 has the ability to form a magnetic field; S2: Wear the magnetic induction patch to the stomach of the patient's chest, test the magnetic field effect of the magnetic marker 403, and establish an individualized magnetic field baseline; S3: Gradually place the catheter 2 into the gastric tube, and detect the magnetic field change in real time through the patch sensor, while the signal processing module collects the position information of the magnetic marker 403 at the head end 1 of the catheter from the patch sensor, analyzes the magnetic field data, and judges the specific position of the catheter head end 1 in the gastric tube; S4: When the position is detected to be abnormal, trigger the alarm system to give an audible warning, a light signal and a terminal APP push; S5: When the catheter 2 is inserted, disconnect the electric connection of the external device, pull out the electric connector 401, and since the side hole 102 is provided with a slope, the tube plug 8 is naturally detached and directly pulled out by the guide wire 402, exposing the side hole 102. At this time, press the first cap 9 and the second cap 10 on the tail end connector 3 to seal the tail end connector 3, and when corresponding operations are needed, inject water, nutrient solution or aspirate gastric juice through the syringe.

[0037] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetically positioned patch-based inductive gastric tube, comprising a catheter tip (1), a magnetically inductive patch, and a signal processing module, characterized in that: The catheter tip (1) includes a head tip (101), the head tip (101) has a smooth head shape, a side hole (102) is provided on the side of the head tip (101), a bevel is provided on the inner side of the side hole (102), a plug cap (8) is installed inside the side hole (102), a connecting groove (103) is provided inside the head tip (101), a guide wire (402) is installed inside the connecting groove (103) for positioning, an electrical control component (4) is installed on the tail end connector (3), a food inlet plug cap (5) and a water inlet plug cap (6) are installed on the side of the tail end connector (3), a first cap opening (9) and a second cap opening (10) are installed on the front of the food inlet plug cap (5) and the water inlet plug cap (6), and the water inlet plug cap (6) is installed on the side of the food inlet plug cap (5).

2. The magnetically positioned patch-type gastric tube according to claim 1, characterized in that: The catheter tip (1) has an internally built-in electrical control component (4). The electrical connector (401), guidewire (402) and magnetic marker (403) together constitute the electrical control component (4). The electrical connector (401) is installed on the tail connector (3) for controlling the guidewire (402). The magnetic marker (403) is made of ultra-thin flexible neodymium iron boron magnetic sheet, with a biocompatible coating on the surface, and adopts a multi-pole array and a specific orientation arrangement design.

3. A magnetically positioned patch-type gastric tube according to claim 2, characterized in that: The plug cap (8) is mounted on the guide wire (402) via a connecting rod (7). A torsion spring is installed at one end of the connecting rod (7) on the guide wire (402). The torsion spring ensures that the plug cap (8) is always in close contact with the inner wall of the tip (101).

4. A magnetically positioned patch-type gastric tube according to claim 3, characterized in that: The head of the electrical connector (401) is provided with a threaded groove, and the external power supply device is connected to the electrical control component (4) through the threaded groove to input current to the magnetic mark (403).

5. A magnetically positioned patch-type gastric tube according to claim 4, characterized in that: The magnetic induction patch is a wearable device. It consists of an adhesive dressing and a polyimide substrate, and has multiple built-in magnetometer sensors. It is attached to the patient's abdominal surface. A signal processing module, a dynamic calibration unit, and a display and alarm unit are installed between the adhesive dressing and the polyimide substrate.

6. A magnetically positioned patch-type gastric tube according to claim 5, characterized in that: The signal processing module includes a filtering unit and a microprocessor, which can remove periodic interference caused by heartbeat and respiration, and perform real-time signal analysis.

7. A magnetically positioned patch-type gastric tube according to claim 6, characterized in that: The display alarm unit provides multimodal alarm functions, including sound alerts, light signals, and terminal APP push notifications.

8. A magnetically positioned patch-type gastric tube according to claim 7, characterized in that: The dynamic calibration unit can automatically record the anatomical features of the stomach after initial positioning and compare the offset in real time.

9. A magnetic positioning method for an inductive gastric tube, using a magnetically positioned patch-type inductive gastric tube as described in claim 8, characterized in that: The specific steps are as follows: S1: Insert the guide wire (402) into the inside of the conduit (2). When the guide wire (402) reaches the bottom, rotate the electrical connector (401) so that the head of the guide wire (402) enters the inside of the connecting groove (103). At the same time, the plug cap (8) seals the outlet of the side hole (102). At this time, the device is electrically connected to the external device through the threaded groove. The magnetic mark (403) on the guide wire (402) is activated so that the magnetic mark (403) has the ability to form a magnetic field. S2: The magnetic induction patch is worn on the stomach of the patient's chest to test the magnetic field effect of the magnetic marker (403) and establish an individualized magnetic field baseline; S3: The catheter (2) is gradually inserted into the gastric tube. The magnetic field changes are detected in real time by the patch sensor. At the same time, the signal processing module collects the position information of the magnetic mark (403) at the tip of the catheter (1) by the patch sensor, analyzes the magnetic field data, and determines the specific position of the tip of the catheter (1) in the gastric tube. S4: When an abnormality is detected in the location, the alarm system is triggered to provide sound alerts, light signals, and push notifications to the terminal APP; S5: When the catheter (2) is inserted, disconnect the electrical connection of the external device and pull it out by pressing the electrical connector (401). Since there is a bevel at the side hole (102), the plug cap (8) is pulled off naturally and is pulled out directly by the guide wire (402) to expose the side hole (102). At this time, press the first cap (9) and the second cap (10) on the tail connector (3) to seal the tail connector (3). When the corresponding operation is required, inject water, nutrient solution or aspirate gastric fluid through a syringe.

Images