Line traction-magnetic anchoring device for esophageal pH capsule monitoring

Abstract

The utility model discloses a line traction-magnetic anchoring device for esophagus pH capsule monitoring, and belongs to the technical field of medical instruments. The utility model relates to a pH capsule, and aims to provide a pH capsule anchored by magnetic force so as to solve the problems that an existing pH capsule needs to depend on assistance of an endoscope and a delivery system in the embedding process, the embedding cost is high, and the falling time cannot be accurately controlled. Comprising a capsule shell and an in-vitro magnetic anchoring device, and a pH capsule is placed in the capsule shell; the in-vitro magnetic anchoring device is arranged at the chest position to apply magnetic attraction force to the capsule shell in the esophagus, and the capsule shell is fixed to the corresponding examination position in the esophagus through the magnetic attraction force. The capsule shell is further connected with a detachable traction line, one end of the traction line is movably connected with the capsule shell, the other end of the traction line is led out of the oral cavity through the esophagus, and the traction line is used for suspending the capsule shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a wire traction-magnetic anchoring device for esophageal pH capsule monitoring. Background Art

[0002] Gastroesophageal reflux disease (GERD) is a common and frequent digestive system disease that has a serious impact on patients' daily life and work. Its pathogenesis is mainly due to gastric acid reflux into the esophagus, acid corrosion and damage to mucosal tissue. Therefore, monitoring esophageal acid reflux is the main method for diagnosing this disease.

[0003] The traditional esophageal pH catheter monitoring method is relatively simple to operate. It requires the catheter to be placed through the nose into the lower end of the esophagus for monitoring. The monitoring process causes obvious discomfort to the human body, so the acceptance rate is not high. In addition, the position of the electrode detection end has a large degree of mobility, and there may be problems such as catheter folding, which may affect the diagnosis results.

[0004] The pH capsule is a pH monitoring device that is invasively fixed to the lower esophageal mucosa and transmits monitoring data wirelessly. The implementation principle is significantly improved compared to the pH catheter, but the insertion method is complicated and requires the assistance of an endoscope and a delivery system during the placement process. In addition, fixing the capsule can cause complications such as esophageal mucosal damage and even gastrointestinal bleeding. The insertion cost is high, and the shedding time cannot be accurately controlled. It is currently difficult to use widely in clinical practice. Utility Model Content

[0005] The utility model provides a wire traction-magnetic anchoring device for esophageal pH capsule monitoring, aiming to provide a pH capsule anchored by magnetic force, so as to solve the problems that the existing pH capsule implantation process needs to rely on the assistance of endoscope and delivery system, the implantation cost is high, and the shedding time cannot be accurately controlled.

[0006] To this end, the utility model adopts the following technical solutions:

[0007] A wire traction-magnetic anchoring device for esophageal pH capsule monitoring, comprising a capsule shell and an in vitro magnetic anchoring device, wherein the pH capsule is placed in the capsule shell;

[0008] An extracorporeal magnetic anchoring device is placed on the anterior chest wall to apply magnetic attraction to the capsule shell in the esophagus, thereby fixing the capsule shell at the corresponding inspection position in the esophagus through the magnetic attraction. A detachable traction wire is also connected to the capsule shell, one end of which is flexibly connected to the capsule shell and the other end is led out of the oral cavity through the esophagus. The traction wire is used to suspend the capsule shell.

[0009] Furthermore, a pH capsule and a magnetic sheet are arranged in the capsule shell, and a magnetic force is generated between the in vitro magnetic anchoring device and the magnetic sheet to fix the capsule shell in the esophagus.

[0010] Furthermore, the magnetic sheet is made of iron, cobalt or nickel.

[0011] Furthermore, the extracorporeal magnetic anchoring device includes a magnetic piece, both ends of which are connected to wearable straps, and the magnetic piece is fixed to the anterior chest wall through the wearable straps.

[0012] Furthermore, the magnetic part includes an anchoring magnet, a magnet protective shell and a magnetic switch, the anchoring magnet is fixed in the magnet protective shell; the magnetic switch is arranged on one side of the magnet protective shell, and the magnetic switch is used to turn on or off the magnetic force of the anchoring magnet; the wearable strap is connected to the magnet protective shell.

[0013] Furthermore, a buzzer alarm is provided on one side of the magnet protection shell, and the buzzer alarm is electrically connected to the magnetic switch. When the capsule shell is separated from the magnetic force of the external magnetic anchoring device, the buzzer alarm sounds an alarm.

[0014] Furthermore, the capsule shell includes an upper shell and a bottom cover, and the upper shell and the bottom cover are connected by a threaded structure; the top of the upper shell is provided with a threading through hole, and the threading through hole is used to pass the traction line; the top of the bottom cover is provided with a pH capsule electrode end through hole, and the pH capsule electrode end through hole is used to install the pH capsule.

[0015] The beneficial effects of the utility model are:

[0016] 1. A pulling line is provided on the capsule shell of the utility model. Under the pulling effect of the pulling line, the patient delivers the pH capsule to the esophagus by oral administration, without relying on the assistance of delivery systems such as endoscopes, which greatly reduces the difficulty of placing the pH capsule, is highly convenient, and is easy to operate; the placement process does not require the assistance of additional consumables and relies on natural swallowing;

[0017] 2. The pH capsule is fixed by an in vitro magnetic anchoring device to improve the comfort of the patient wearing it, and it is also convenient to adjust the position of the pH capsule in vitro to improve the accuracy of the pH capsule placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the pH capsule of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the pH capsule shell of the utility model;

[0020] Figure 3 It is a schematic diagram of the traction line of the utility model;

[0021] Figure 4 is a schematic diagram of the in vitro magnetic anchoring device of the utility model;

[0022] Figure 5 This is a schematic diagram of the use state of the utility model;

[0023] Figure 6 Schematic diagram of a method for determining the anchoring force of a pH capsule of the utility model;

[0024] In the figure: 10 - capsule shell; 11 - upper shell; 12 - bottom cover; 13 - threading hole; 14 - pH capsule electrode end hole; 15 - NdFeB magnet; 20 - traction line; 30 - in vitro magnetic anchoring device; 31 - anchoring magnet; 32 - magnet protection shell; 33 - magnetic switch; 34 - buzzer alarm; 35 - wearable strap. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1 and 5 As shown, the utility model provides a wire traction-magnetic anchoring device for esophageal pH capsule monitoring, including: a capsule shell 10 and an in vitro magnetic anchoring device 30.

[0027] like Figure 1 and 2 As shown, the capsule shell 10 is a cylindrical containing cavity made of injection molding of medical materials or medical latex, which is acid-resistant and non-toxic, with an overall length of 15-25mm and an outer diameter of about 10-15mm. The capsule shell 10 includes a coaxial cylindrical upper shell 11 that can be sleeved and a hemispherical bottom cover 12 at the bottom, which are threaded and sealed. A magnetic sheet is placed inside the upper shell 11, and the magnetic sheet is a neodymium iron boron magnet 15, and the long axis direction of the neodymium iron boron magnet 15 is in the same direction as the longitudinal axis of the capsule shell 10. A transverse threading through hole 13 with a diameter of about 1mm is provided at the top of the upper shell 11, and a traction line 20 is passed through the threading through hole 13 in a single strand; a circular through hole with a diameter of about 5mm is provided in the center of the bottom cover 12, and the circular through hole is the through hole of the pH capsule electrode end. A pH capsule is also provided in the shell, and the pH capsule is used to dynamically monitor gastroesophageal reflux in patients with diagnosis and treatment needs.

[0028] like Figure 4 As shown, the extracorporeal magnetic anchoring device 30 includes an anchoring magnet 31, a magnetic protective shell 32, a magnetic switch 33, a buzzer alarm 34 and a wearable strap 35. The anchoring magnet 31 is encapsulated with a layer of magnetic protective shell 32, and a magnetic switch 33 is installed on the chest wall side of the anchoring magnet 31. The magnetic switch 33 is used to control the opening and closing of the magnetic force of the anchoring magnet 31. The buzzer alarm 34 is electrically connected to the magnetic switch 33. The function and triggering principle of the buzzer alarm 34 are as follows: the buzzer alarm contains a magnetic field sensor. When the capsule device with a magnetic sheet in the esophagus falls off, the magnetic anchoring state is interrupted, that is, the magnetic field sensor is triggered, and the capsule is prompted to fall off through an alarm. Wearable straps 35 are fixed on both sides of the magnetic protective shell 32, and the magnetic component is fixed to the chest through the wearable strap 35.

[0029] like Figure 6 As shown, based on the above device structure, the utility model also discloses a method for calculating the magnetic anchoring force of an intraesophageal pH capsule device:

[0030] The attraction between the in vitro magnetic anchoring device 30 and the magnetic sheet is subject to actual measurement. The force analysis of the magnetic anchoring state of the capsule shell 10 is performed: in the vertical direction, it is assumed that the maximum esophageal peristaltic force that causes the capsule shell 10 to fall off is F 1max At this time, the friction force on the capsule shell 10 is transformed into sliding friction force F f . F f The attraction between the magnet and the n is a linear relationship, the sum of the gravity G of the capsule shell 10 and the esophageal peristaltic force is equal to the sliding friction F of the capsule shell 10 f Therefore, the esophageal peristaltic force F1 and the attraction between the magnet F n Therefore, as long as the maximum value of esophageal peristalsis is measured by esophageal manometry, the minimum force required for magnetic anchoring can be determined. Based on this minimum force, an in vitro magnet control system that can flexibly adjust the anchoring force can be designed.

[0031] During the specific operation, the subject sits down, first wears the external magnetic anchoring device 30 according to the body surface mark, places the anchoring magnet 31 close to the chest wall, and fixes it about 5 cm above the projection point of the patient's lower esophageal sphincter on the body surface, and wraps the wearable strap 35 around the patient's chest wall to complete the fixation of the external magnetic anchoring device 30. Under the traction of the traction line 20, the capsule shell 10 is swallowed naturally. After swallowing about 50 cm, the examiner pulls the double-strand traction line 20 with one hand and fixes the esophageal capsule shell 10 to the esophageal wall through the attraction generated by the external magnetic anchoring device 30 and the built-in target magnet, and starts dynamic gastroesophageal reflux monitoring. After achieving the anchored state, pull one end of the traction line 20 and pull it out. After completing the dynamic reflux monitoring, remove the external magnetic anchoring device 30 to release the anchoring of the esophageal pH capsule device, which naturally falls off into the gastric cavity and is discharged from the body through the digestive tract.

Claims

1. A wire traction-magnetic anchoring device for esophageal pH capsule monitoring, characterized in that: It comprises a capsule shell (10) and an in vitro magnetic anchoring device (30), wherein the capsule shell (10) is used to place a pH capsule; An extracorporeal magnetic anchoring device (30) is placed at the front chest wall to apply a magnetic attraction force to the capsule shell (10) in the esophagus, and the capsule shell (10) is fixed at a corresponding inspection position in the esophagus through the magnetic attraction force; a detachable traction line (20) is also connected to the capsule shell (10), one end of the traction line (20) is movably connected to the capsule shell (10), and the other end is led out of the oral cavity through the esophagus, and the traction line (20) is used to suspend the capsule shell (10).

2. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 1, characterized in that: A pH capsule and a magnetic sheet are arranged inside the capsule shell (10); a magnetic force is generated between the in vitro magnetic anchoring device (30) and the magnetic sheet to fix the capsule shell (10) in the esophagus.

3. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 2, characterized in that: The magnetic sheet is made of iron, cobalt or nickel.

4. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 2, characterized in that: The in vitro magnetic anchoring device (30) comprises a magnetic piece, and wearable straps (35) are connected to both ends of the magnetic piece, and the magnetic piece is fixed to the chest via the wearable straps (35).

5. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 4, characterized in that: The magnetic component comprises an anchoring magnet (31), a magnet protection shell (32) and a magnetic switch (33); the anchoring magnet (31) is fixed in the magnet protection shell (32); the magnetic switch (33) is arranged on one side of the magnet protection shell (32), and the magnetic switch (33) is used to turn on or off the magnetic force of the anchoring magnet (31); and the wearable strap (35) is connected to the magnet protection shell (32).

6. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 5, characterized in that: A buzzer alarm (34) is provided on one side of the magnetic protection housing (32), and the buzzer alarm (34) is electrically connected to the magnetic switch (33). When the capsule shell (10) is separated from the magnetic force of the in vitro magnetic anchoring device (30), the buzzer alarm (34) sounds an alarm.

7. The wire traction-magnetic anchoring device for esophageal pH capsule monitoring according to claim 2, characterized in that: The capsule shell (10) comprises an upper shell (11) and a bottom cover (12), wherein the upper shell (11) and the bottom cover (12) are connected via a threaded structure; a threading through hole (13) is provided at the top end of the upper shell (11), and the threading through hole (13) is used to pass a traction line (20); and a pH capsule electrode end through hole is provided at the top end of the bottom cover (12), and the pH capsule electrode end through hole is used to install a pH capsule.

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