CN117065188A

CN117065188A - Ileus catheter with pressure sensing function

Info

Publication number: CN117065188A
Application number: CN202311249933.XA
Authority: CN
Inventors: 詹涛; 苏技; 方亚炜; 李齐杰
Original assignee: Anhui Kupai Medical Technology Co ltd
Current assignee: Anhui Kupai Medical Technology Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2023-11-17
Anticipated expiration: 2043-09-26
Also published as: CN117065188B

Abstract

An intestinal obstruction conduit with a pressure sensing function belongs to the technical field of intestinal obstruction conduits, and aims to solve the problems that the traditional intestinal obstruction conduit is inconvenient to confirm intestinal pressure by arranging a pressure sensor at the end of the intestinal obstruction conduit, and in some cases, the intestinal obstruction conduit still needs to advance at the end of the intestinal obstruction conduit after being fixed; the application confirms the positions of the catheter and the end part by guiding the tip of the catheter into the human body, releasing electromagnetic signals by the electromagnetic sensor and the electromagnetic navigation guide wire, confirming the pressure condition of the intestinal canal by releasing pressure signals by the detection type pressure sensor, expanding the first annular air bag by inflation, fixing the position of the intestinal obstruction catheter, continuously inflating, enabling the gas in the first annular air bag to pass through the connecting air pipes, and enabling the gas to enter the second annular air bag after a plurality of groups of connecting air pipes at the same level are simultaneously elongated, so that the tip of the catheter advances for a certain distance in the human body for further treatment.

Description

Ileus catheter with pressure sensing function

Technical Field

The application relates to the technical field of ileus catheters, in particular to a ileus catheter with a pressure sensing function.

Background

The intestinal obstruction conduit is about three meters long, and the tube body is made of medical silicon rubber, and the principle is that under the X-ray or digestive endoscope, the intestinal obstruction conduit is inserted into the stomach cavity through the nasal cavity, enters the obstruction part by intestinal peristalsis, and directly performs decompression suction on intestinal contents above the obstruction. The inside is a one-way valve, which can prevent the backflow of digestive juice, relieve the symptoms of intestinal obstruction, can be filled with medicines such as traditional Chinese medicine and paraffin oil for lubricating the intestines through a wire guide hole, and can be even implanted into an intestinal stent to lead the narrow intestinal cavity to be opened. The catheter itself is soft and relatively noninvasive, and is widely applied clinically at present, after the ileus catheter is inserted, in order to confirm the position of the ileus catheter, electromagnetic navigation is needed, the travel and the position of the end of the ileus catheter are judged, but after the position is confirmed, the end of the ileus catheter is still insufficient, in order to better diagnose intestinal problems, the intestinal pressure of the diagnosis position is also needed to be known, the traditional ileus catheter is inconvenient to confirm the intestinal pressure by arranging a pressure sensor on the end of the ileus catheter, and when the pressure sensor transmits a pressure signal, signal noise is inconvenient to reduce and the correctness of the signal is not corrected, deviation is easy to appear, the traditional ileus catheter is expanded at a certain position of the ileus catheter through a ball valve port to fix the end of the ileus catheter, but in certain cases, the end of the ileus catheter still needs to advance after being fixed, at the moment, the air release valve port is needed to be released, the position of the end of the ileus catheter is influenced, the position of the ileus catheter needs to be readjusted later, and time is wasted.

To solve the above problems, a ileus catheter with pressure sensing function is proposed.

Disclosure of Invention

The application aims to provide a ileus catheter with a pressure sensing function, which solves the problem that the traditional ileus catheter in the background art is inconvenient to confirm intestinal pressure by arranging a pressure sensor at the end of the ileus catheter, and in some cases, the ileus catheter still needs to be advanced at the end of the ileus catheter after being fixed.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides an intestinal obstruction pipe with pressure sensing function, including first body and the pipe sleeve of setting in the first body outside, the one end connection of first body is provided with the second body, the one end of second body is provided with the pipe pointed end, connect between second body and the pipe pointed end and be provided with the location extension subassembly, intestinal obstruction pipe is usually applied detecting system to cooperate when detecting, detecting system includes electromagnetic navigation system and pressure test system, electromagnetic navigation system includes electromagnetic sensor and navigation controller, navigation controller one end is provided with electromagnetic navigation seal wire, electromagnetic navigation seal wire sets up in the inside of first body, second body and pipe pointed end;

the pressure test system monitors intestinal pressure through pressure sensing of the detection type pressure sensor, evaluates intestinal functions, confirms the arrival position of the intestinal obstruction catheter through an electromagnetic sensor, confirms the running of the intestinal obstruction catheter in the human body through an electromagnetic navigation guide wire, and is arranged at the end part of the tip of the catheter;

the positioning extension assembly comprises a first annular air bag, a second annular air bag and a third annular air bag, wherein the second annular air bag and the third annular air bag are sequentially arranged on one side of the first annular air bag, the outer side diameter of the first annular air bag is larger than that of the second annular air bag and that of the third annular air bag, connecting air pipes are arranged between the first annular air bag and the second annular air bag and between the second annular air bag and the third annular air bag, a plurality of groups of connecting air pipes are arranged, the tip of the catheter is guided into the human body, electromagnetic signals are released by an electromagnetic sensor and an electromagnetic navigation guide wire, the electromagnetic signals are received by a navigation controller, the positions of the catheter and the end are confirmed, the pressure signals are released by a detection type pressure sensor, the intestinal tract pressure condition is confirmed, the intestinal tract function is evaluated, the first annular air bag is inflated through inflation, the first annular air bag inflated in the human body can be in contact with the inner wall of the intestinal tract, the position of the intestinal tract is fixed, after the plurality of groups of connecting air pipes at the same level are stretched simultaneously, and the air enters the second annular air bag, the tip of the catheter is caused to advance a certain distance in the human body, and further treatment is carried out.

Further, the outside of catheter sleeve is provided with contrast sacculus valve port, wash the mouth, pressure sensor entry and aerifys the entry, first washing chamber, first pressure sensor chamber, aerify the chamber, first sacculus chamber, first navigation seal wire chamber and first shadow line have all been seted up to the inside of first body and second body, first sacculus chamber is linked together with contrast sacculus valve port, first washing chamber is linked together with wash the mouth, first pressure sensor chamber is linked together with pressure sensor entry, aerify the chamber and be linked together with aerify the entry, electromagnetic navigation seal wire setting is at first navigation seal wire intracavity portion.

Further, the inside of the catheter tip is provided with a second flushing cavity, a second pressure sensor cavity, a second radiography saccule cavity, a second navigation guide wire cavity and a second hatching line, the pipe diameters of the first pipe body, the second pipe body and the positioning extension component are equal, and the electromagnetic navigation guide wire is also arranged in the second navigation guide wire cavity.

Further, one end of the catheter tip is provided with a connecting body, the catheter tip is connected with the second tube body through the connecting body, the connecting body comprises a rubber cone connected with the second tube body and a rubber column connected with the catheter tip, the connecting body and the second tube body are members made of the same material, and cavity connecting members are arranged inside the rubber cone and the rubber column.

Further, the lumen connecting member corresponds to a reduced version of the second flushing lumen, the second contrast balloon lumen, the second pressure sensor lumen, the second navigation guidewire lumen and the second guidewire lumen for receiving communication between the corresponding second flushing lumen and the first flushing lumen, the second contrast balloon lumen and the first guidewire lumen, the first pressure sensor lumen and the second pressure sensor lumen, the first navigation guidewire lumen and the second navigation guidewire lumen, and the first guidewire and the second guidewire.

Further, the data acquisition system is used for receiving and recording pressure signals acquired from the detection type pressure sensor, converting the pressure signals into digital signals and storing and processing the digital signals through connection to the detection type pressure sensor, the signal conditioning circuit is used for conditioning signals to filter noise, amplify the signals or conduct linearization processing, the detection type pressure sensor usually outputs analog signals, the signal conditioning circuit is required to act, the signal conditioning circuit can amplify, filter and the like the analog signals so as to ensure the accuracy and stability of measurement, the data display and reading device is used for displaying the data measured by the detection type pressure sensor in a digital form for intuitively displaying and reading pressure values, and a man-machine interaction interface is provided for a user to read and analyze.

Further, the detecting type pressure sensor includes a sensing element for converting pressure into an electrical signal according to a manner of being deformed by pressure, a sealing member for encapsulating an internal structure of the detecting type pressure sensor to prevent dust, liquid and moisture from entering inside the sensor, thereby ensuring performance and life thereof, a compensating element for correcting an influence of temperature on pressure measurement, and a temperature sensor for measuring an ambient temperature to provide a more accurate pressure measurement result.

Further, the first annular air bag is positioned at the outer side of the rubber cone, the second annular air bag and the third annular air bag are positioned at the outer side of the rubber cylinder, and one end of the inflation cavity is communicated with the first annular air bag.

Further, connect the trachea and include the elastic rubber body and set up the gas-supply chamber in the elastic rubber body is inside, the fixed second closed loop that is provided with in upper end in gas-supply chamber, the fixed first closed loop that is provided with in lower extreme in gas-supply chamber, connect tracheal inside still to set up annular cavity, the inside in annular cavity is provided with annular spring, annular cavity parcel sets up in the outside in gas-supply chamber.

Further, the second closed loop and the first closed loop are members made of the same structure, a through groove is formed in the first closed loop in a penetrating mode, elastic pieces are further arranged in the first closed loop, four groups of elastic pieces are arranged, and the outer sides of the four groups of elastic pieces are fixedly connected with the inner wall of the through groove.

Compared with the prior art, the application has the following beneficial effects:

the application provides a intestinal obstruction catheter with a pressure sensing function, which is characterized in that the tip of the catheter is guided into the human body, an electromagnetic sensor and an electromagnetic navigation guide wire release electromagnetic signals, the electromagnetic sensor and the electromagnetic navigation guide wire are received by a navigation controller, the positions of the catheter and the end part are confirmed, the pressure condition of the intestinal tract is confirmed by detecting the pressure signals released by the pressure sensor, the intestinal tract function is evaluated, a first annular air bag is inflated through inflation, the first annular air bag inflated in the body can be contacted with the inner wall of the intestinal tract, the position of the intestinal obstruction catheter is fixed, the first annular air bag is continuously inflated, the inner air of the first annular air bag passes through connecting air pipes, a plurality of groups of connecting air pipes at the same level are simultaneously elongated, and then the air enters into a second annular air bag, so that the tip of the catheter advances for a certain distance in the human body, and further treatment is carried out, and the problems that the traditional intestinal obstruction catheter is inconvenient to confirm the intestinal tract pressure by arranging the pressure sensor at the end of the intestinal obstruction catheter are solved, and the intestinal obstruction catheter still needs to advance after the intestinal obstruction catheter is fixed under certain conditions.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present application;

FIG. 2 is a schematic view of a second tube and catheter tip configuration of the present application;

FIG. 3 is a schematic cross-sectional plan view of a second tubular body according to the present application;

FIG. 4 is a schematic plan view of a catheter tip section of the present application;

FIG. 5 is a schematic side plan view of a second tubular body and catheter tip of the present application;

FIG. 6 is a schematic diagram of a detection system module structure according to the present application;

FIG. 7 is a schematic diagram of a detection type pressure sensor module according to the present application;

FIG. 8 is a schematic side plan view of the positioning extension assembly of the present application;

FIG. 9 is a schematic side plan view of a connecting gas tube according to the present application;

fig. 10 is a schematic structural view of a first sealing ring according to the present application.

In the figure: 1. a navigation controller; 11. an electromagnetic navigation guide wire; 2. a catheter sleeve; 21. a contrast balloon valve port; 22. a flushing port; 23. a pressure sensor inlet; 24. a charge air inlet; 3. a first tube body; 4. a second tube body; 41. a first flushing chamber; 42. a first pressure sensor cavity; 43. an air-filling cavity; 44. a first ostomy balloon lumen; 45. a first navigation guidewire lumen; 46. a first hatching; 5. positioning the extension assembly; 51. a first annular balloon; 52. a second annular balloon; 53. a third annular bladder; 54. connecting an air pipe; 541. an air delivery chamber; 542. an annular spring; 543. an annular cavity; 544. a first closed loop; 5441. a through groove; 5442. an elastic sheet; 545. an elastic rubber body; 546. a second closed loop; 6. a catheter tip; 61. a connecting body; 611. a rubber cone; 612. a rubber column; 613. a cavity connecting member; 62. a second pressure sensor cavity; 63. a second contrast balloon lumen; 64. a second navigation guidewire lumen; 65. a second hatching; 66. a second flushing chamber; 7. a detection system; 8. an electromagnetic navigation system; 81. an electromagnetic sensor; 9. a pressure test system; 91. a detection type pressure sensor; 911. an inductive element; 912. a seal; 913. a compensation element; 914. a temperature sensor; 92. a data acquisition system; 93. a signal conditioning circuit; 94. data display and reading device.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In order to solve the technical problem that the traditional ileus catheter is inconvenient to confirm the intestinal pressure by arranging a pressure sensor at the end of the ileus catheter, as shown in fig. 1-7, the following preferable technical scheme is provided:

an intestinal obstruction catheter with a pressure sensing function comprises a first catheter body 3 and a catheter sleeve 2 arranged outside the first catheter body 3, wherein one end of the first catheter body 3 is connected with a second catheter body 4, one end of the second catheter body 4 is provided with a catheter tip 6, a positioning extension component 5 is connected between the second catheter body 4 and the catheter tip 6, the intestinal obstruction catheter is matched with a detection system 7 during detection, the detection system 7 comprises an electromagnetic navigation system 8 and a pressure test system 9, the electromagnetic navigation system 8 comprises an electromagnetic sensor 81 and a navigation controller 1, one end of the navigation controller 1 is provided with an electromagnetic navigation guide wire 11, the electromagnetic navigation guide wire 11 is arranged inside the first catheter body 3, the second catheter body 4 and the catheter tip 6, the pressure test system 9 comprises a detection type pressure sensor 91, a data acquisition system 92, a signal conditioning circuit 93 and a data display and reading device 94, the pressure test system 9 monitors intestinal tract pressure through pressure sensing of the detection type pressure sensor 91, the electromagnetic navigation system 8 confirms the intestinal obstruction catheter to reach the position through the electromagnetic sensor 81 and confirms the position of the intestinal obstruction catheter through the electromagnetic sensor 81 and the electromagnetic navigation guide wire 11 is arranged inside the human body end of the electromagnetic guide wire 11 and the human body end of the human body, and the electromagnetic guide wire 11 is arranged inside the electromagnetic guide wire 81 and the human body end of the human body.

The positioning and extending assembly 5 comprises a first annular air bag 51, a second annular air bag 52 and a third annular air bag 53 which are sequentially arranged on one side of the first annular air bag 51, the outer diameter of the first annular air bag 51 is larger than the diameters of the second annular air bag 52 and the third annular air bag 53, connecting air pipes 54 are arranged between the first annular air bag 51 and the second annular air bag 52 and between the second annular air bag 52 and the third annular air bag 53, a plurality of groups of connecting air pipes 54 are arranged, the electromagnetic sensor 81 and the electromagnetic navigation guide wire 11 release electromagnetic signals through guiding the catheter tip 6 into the human body, the positions of the catheter and the end part are confirmed by the navigation controller 1, the pressure signals are released through the detection type pressure sensor 91, the intestinal canal pressure condition is confirmed, the intestinal canal function is evaluated, the first annular air bag 51 which is expanded in the human body is contacted with the inner wall of the intestinal canal through inflation, fixing the position of the intestinal obstruction catheter, continuously inflating, wherein the gas in the first annular air bag 51 passes through the connecting air pipes 54, a plurality of groups of connecting air pipes 54 at the same level are simultaneously lengthened, then the gas enters the second annular air bag 52, so that the catheter tip 6 advances a certain distance in the human body for further treatment, a contrast balloon valve port 21, a flushing port 22, a pressure sensor inlet 23 and an inflation inlet 24 are arranged on the outer side of the catheter sleeve 2, a first flushing cavity 41, a first pressure sensor cavity 42, an inflation cavity 43, a first imaging balloon cavity 44, a first navigation guide wire cavity 45 and a first imaging line 46 are respectively arranged in the first tube 3 and the second tube 4, the first imaging balloon cavity 44 is communicated with the contrast balloon valve port 21, the first flushing cavity 41 is communicated with the flushing port 22, the first pressure sensor cavity 42 is communicated with the pressure sensor inlet 23, the inflation lumen 43 is in communication with the inflation inlet 24 and the electromagnetic navigation guidewire 11 is disposed within the first navigation guidewire lumen 45.

The inside of the catheter tip 6 is provided with a second flushing cavity 66, a second pressure sensor cavity 62, a second contrast balloon cavity 63, a second navigation guide wire cavity 64 and a second making line 65, the pipe diameters of the first pipe body 3, the second pipe body 4 and the positioning extension assembly 5 are equal, the electromagnetic navigation guide wire 11 is also arranged inside the second navigation guide wire cavity 64, one end of the catheter tip 6 is provided with a connecting body 61, the catheter tip 6 is connected with the second pipe body 4 through the connecting body 61, the connecting body 61 comprises a rubber cone 611 connected with the second pipe body 4 and a rubber column 612 connected with the catheter tip 6, the connecting body 61 and the second pipe body 4 are members made of the same material, the rubber cone 611 and the rubber column 612 are internally provided with a cavity connecting member 613, and the cavity connecting member 613 are equivalent to the second flushing cavity 66, the second contrast balloon cavity 63, the second pressure sensor cavity 62, the second navigation guide wire cavity 64 and a contracted version of the second making line 65, and the first guide wire cavity 45 are used for correspondingly communicating the second flushing cavity 66 with the first cavity 41, the second guide wire cavity 63, the second guide wire cavity 64, the second guide wire cavity 45 and the second making line 46.

The data acquisition system 92 is used for receiving and recording the pressure signal obtained from the detection type pressure sensor 91, converting the pressure signal into a digital signal and storing and processing the digital signal, the signal conditioning circuit 93 is used for conditioning the signal to filter noise, amplify the signal or linearise the signal, the detection type pressure sensor 91 usually outputs an analog signal, the signal conditioning circuit 93 is required to act, the signal conditioning circuit 93 can amplify, filter and the like the analog signal to ensure the accuracy and stability of measurement, the data display and reading device 94 is used for intuitively displaying and reading the pressure value, the data measured by the detection type pressure sensor 91 is displayed in a digital form, and a man-machine interaction interface is provided for a user to read and analyze, the detection type pressure sensor 91 comprises a sensing element 911, a sealing member 912, a compensating element 913 and a temperature sensor 914, the sensing element 911 is used for converting the pressure into an electric signal, the pressure is converted into a corresponding electric signal according to the mode of pressure deformation, the sealing member 912 is used for packaging the internal structure of the detection type pressure sensor 91 so as to prevent dust, liquid moisture and enter the sensor, thereby ensuring the performance and service life of the sensor are ensured, the temperature compensating element 913 is used for measuring the temperature and the temperature of the pressure sensor is used for correcting the temperature measurement result, and the temperature sensor is more accurate.

Specifically, by guiding the catheter tip 6 into the human body, the electromagnetic sensor 81 and the electromagnetic navigation guide wire 11 release electromagnetic signals, the electromagnetic sensor 81 and the electromagnetic navigation guide wire release electromagnetic signals, the navigation controller 1 receives the electromagnetic signals, the navigation controller 1 confirms the position of the catheter and the end part, the detection type pressure sensor 91 releases pressure signals, the intestinal pressure condition is confirmed, the intestinal function is evaluated, the data acquisition system 92 is used for receiving and recording the pressure signals acquired from the detection type pressure sensor 91, the pressure signals are converted into digital signals and stored and processed by being connected to the detection type pressure sensor 91, the signal conditioning circuit 93 is used for carrying out signal conditioning to filter noise, amplify signals or carry out linearization processing, the detection type pressure sensor 91 normally outputs analog signals, the signal conditioning circuit 93 is required to act, the signal conditioning circuit 93 can carry out amplification, filtering and other processes on the analog signals, to ensure accuracy and stability of the measurement, the data display and reading device 94 is used to display the data measured by the detection type pressure sensor 91 in digital form for visual display and reading of the pressure values, and to provide a man-machine interface for the user to read and analyze, the sensing element 911 is used to be responsible for converting the pressure into an electrical signal, the pressure is converted into a corresponding electrical signal according to the manner of being deformed by the pressure, the sealing member 912 is used to encapsulate the internal structure of the detection type pressure sensor 91 to prevent dust, liquid and moisture from entering the inside of the sensor, thereby ensuring the performance and lifetime thereof, the compensating element 913 is used to correct the influence of the temperature on the pressure measurement, the temperature sensor 914 is used to measure the ambient temperature to provide a more accurate pressure measurement result, when the pressure is applied, i.e. the object to be measured applies pressure to the sensing element 911 of the detection type pressure sensor 91, the sensing element 911 can generate corresponding deformation, the deformation can be film bending, strain gauge stretching or piezoresistive sensing element 911 resistance change, and the like, depending on the working principle of the sensor, the deformation of the sensing element 911 can be converted into corresponding electric signals, the corresponding deformation can be realized through a circuit structure in the sensing element 911, for example, the change of current or voltage can be caused by the resistance change of a film in the film sensor, the deformation of the strain gauge in the strain gauge sensor can cause the change of resistance, and the like, the sensing element 911 converts a pressure signal into an electric signal, and then outputs the electric signal to a subsequent signal conditioning circuit 93 for processing, the electric signal is amplified, filtered, linearized, and the like through the signal conditioning circuit 93, so that the output signal of the sensor is more stable and accurate, and is adapted to the requirements of the system, the processed electric signal is further converted and processed by the data acquisition system 92, the analog signal is converted into a digital signal, the digital signal is displayed in an intuitive manner through a digital display meter, a display screen, a computer interface, and the like in the range of a data display and reading device 94, the digital signal is read and is analyzed by a user, the pressure signal is converted into an electric signal, and the temperature signal is more accurately measured by the pressure sensor 91, and the temperature sensor is more accurately measured, and the temperature sensor 91 is more accurately measured, and the temperature sensor is more accurately and the temperature-compensated by the temperature sensor is measured.

In order to solve the technical problem that in some cases, the ileus catheter still needs to be advanced at the end of the ileus catheter after being fixed, as shown in fig. 8-10, the following preferred technical solutions are provided:

the first annular air bag 51 is located at the outer side of the rubber cone 611, the second annular air bag 52 and the third annular air bag 53 are located at the outer side of the rubber column 612, one end of the air inflation cavity 43 is communicated with the first annular air bag 51, the connecting air pipe 54 comprises an elastic rubber body 545 and an air transmission cavity 541 formed in the elastic rubber body 545, a second closed ring 546 is fixedly arranged at the upper end of the air transmission cavity 541, a first closed ring 544 is fixedly arranged at the lower end of the air transmission cavity 541, an annular cavity 543 is further formed in the connecting air pipe 54, an annular spring 542 is arranged in the annular cavity 543, the annular cavity 543 wraps the outer side of the air transmission cavity 541, the second closed ring 546 and the first closed ring 544 are members made of the same structure, through grooves 5441 are formed in the first closed ring 544 in a penetrating mode, elastic pieces 5442 are further arranged in the first closed ring 544 in a penetrating mode, four groups of elastic pieces 5442 are fixedly connected with the inner walls of the through grooves 5441.

Specifically, after the ileus catheter is inflated through the contrast balloon valve port 21 to a fixed position, the position of the end of the catheter tip 6 needs to be moved again, at this time, the air in the ileus catheter needs to be released through the contrast balloon valve port 21 to allow the ileus catheter to move again, but during the process of releasing air, the position of the end of the catheter tip 6 changes, so that pressure data and electromagnetic data need to be measured again, the operation is complex, at this time, air can be inflated through the inflation inlet 24, and the air enters the first annular air bag 51 through the inflation chamber 43 and the cavity connecting member 613, so that the first annular air bag 51 is inflated, and because the second sealing ring 546 is set according to the principle of a heart valve, the first annular air bag 51 is inflated first, the inflated first annular air bag 51 contacts the inner wall of the intestinal canal, after the first annular air bag 51 is fully filled with a sufficient amount of air, the four groups of elastic sheets 5442 arranged on the second closed loop 546 are flushed, namely, the four groups of elastic sheets 5442 are deformed and bent downwards to expose the through grooves 5441, the air enters the air cavity 541, the air is accumulated in the air cavity 541 due to the arrangement of the first closed loop 544, the annular spring 542 and the elastic rubber body 545 are stretched, namely, the connecting air pipe 54 is stretched, at this time, the rubber column 612 and the rubber cone 611 are also stretched, one end of the catheter tip 6 can continue to advance in the intestinal tract, and the accuracy of the end position of the catheter tip 6 is not affected under the condition that the intestinal obstruction catheter is fixed, when the annular spring 542 is stretched to the limit position, the air in the air cavity 541 breaks through the first closed loop 544 and enters the second annular air bag 52, the diameter of the second annular balloon 52 is smaller than that of the first annular balloon 51, and the second annular balloon 52 and the third annular balloon 53 are not contacted with the inner wall of the intestinal tract, so on, the connecting air pipe 54 arranged between the second annular balloon 52 and the third annular balloon 53 is also lengthened under the condition of continuously inflating, the rubber cone 611 and the rubber column 612 are lengthened again, the end part of the catheter tip 6 can continuously advance, and the inner part of the intestinal tract is detected under the condition of not influencing the end part of the catheter tip 6.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an intestinal obstruction pipe with pressure sensing function, includes first body (3) and sets up pipe sleeve (2) in the outside of first body (3), its characterized in that: one end of the first pipe body (3) is connected with a second pipe body (4), one end of the second pipe body (4) is provided with a pipe tip (6), a positioning extension component (5) is connected between the second pipe body (4) and the pipe tip (6), the intestinal obstruction pipe is matched with the intestinal obstruction pipe usually through a detection system (7) during detection, the detection system (7) comprises an electromagnetic navigation system (8) and a pressure test system (9), the electromagnetic navigation system (8) comprises an electromagnetic sensor (81) and a navigation controller (1), one end of the navigation controller (1) is provided with an electromagnetic navigation guide wire (11), and the electromagnetic navigation guide wire (11) is arranged inside the first pipe body (3), the second pipe body (4) and the pipe tip (6);

the pressure test system (9) comprises a detection type pressure sensor (91), a data acquisition system (92), a signal conditioning circuit (93) and a data display and reading device (94), the pressure test system (9) monitors intestinal pressure through pressure sensing of the detection type pressure sensor (91), the intestinal function is evaluated, the electromagnetic navigation system (8) confirms the arrival position of an intestinal obstruction catheter through an electromagnetic sensor (81), the electromagnetic navigation system (8) confirms the running path of the intestinal obstruction catheter in a human body through an electromagnetic navigation guide wire (11), and the electromagnetic sensor (81) and the detection type pressure sensor (91) are arranged at the end part of a catheter tip (6);

the positioning extension assembly (5) comprises a first annular air bag (51), a second annular air bag (52) and a third annular air bag (53) which are sequentially arranged on one side of the first annular air bag (51), the outer diameter of the first annular air bag (51) is larger than the diameters of the second annular air bag (52) and the third annular air bag (53), connecting air pipes (54) are arranged between the first annular air bag (51) and the second annular air bag (52) and between the second annular air bag (52) and the third annular air bag (53), the connecting air pipes (54) are provided with a plurality of groups, the catheter tip (6) is guided into the human body through the catheter tip, electromagnetic signals are released by the electromagnetic sensor (81) and the electromagnetic navigation guide wire (11), the position of the catheter and the end part is confirmed by the navigation controller (1), the pressure signal is released by the detection type pressure sensor (91), the intestinal pressure condition is confirmed, the intestinal function is evaluated, the first annular air bag (51) is inflated by inflation, the first annular air bag (51) inflated in the body can be contacted with the inner wall of the intestinal canal, the position of the intestinal obstruction catheter is fixed, the air in the first annular air bag (51) passes through the connecting air pipe (54) by continuous inflation, after a plurality of groups of connecting air pipes (54) at the same level are simultaneously elongated, the air enters the second annular air bag (52), the tip (6) of the catheter is advanced for a certain distance in the human body, further treatment is performed.

2. The ileus catheter with pressure sensing function of claim 1, wherein: the outside of pipe cover (2) is provided with contrast sacculus valve port (21), wash mouth (22), pressure sensor entry (23) and aerify entry (24), first washing chamber (41), first pressure sensor chamber (42), aerify chamber (43), first shadow sacculus chamber (44), first navigation seal wire chamber (45) and first shadow line (46) have all been seted up to the inside of first body (3) and second body (4), first shadow sacculus chamber (44) are linked together with contrast sacculus valve port (21), first washing chamber (41) are linked together with wash mouth (22), first pressure sensor chamber (42) are linked together with pressure sensor entry (23), aerify chamber (43) and aerify entry (24) and be linked together, electromagnetic navigation seal wire (11) set up in first navigation seal wire chamber (45) inside.

3. The ileus catheter with pressure sensing function of claim 2, wherein: the inside of pipe pointed end (6) is provided with second washing chamber (66), second pressure sensor chamber (62), second contrast sacculus chamber (63), second navigation seal wire chamber (64) and second hatching line (65), and the pipe diameter of first body (3), second body (4) and location extension subassembly (5) equals, and electromagnetic navigation seal wire (11) also set up in second navigation seal wire chamber (64) inside.

4. A ileus catheter with pressure sensing function according to claim 3, wherein: one end of the catheter tip (6) is provided with a connecting body (61), the catheter tip (6) is connected with the second pipe body (4) through the connecting body (61), the connecting body (61) comprises a rubber cone (611) connected with the second pipe body (4) and a rubber column (612) connected with the catheter tip (6), the connecting body (61) and the second pipe body (4) are members made of the same material, and cavity connecting members (613) are arranged inside the rubber cone (611) and the rubber column (612).

5. The ileus catheter with pressure sensing function of claim 4, wherein: the lumen connecting member (613) corresponds to a reduced version of the second flushing lumen (66), the second contrast balloon lumen (63), the second pressure sensor lumen (62), the second navigation guidewire lumen (64) and the second hatching (65) for receiving communication between the corresponding second flushing lumen (66) and the first flushing lumen (41), the second contrast balloon lumen (63) and the first hatching balloon lumen (44), the first pressure sensor lumen (42) and the second pressure sensor lumen (62), the first navigation guidewire lumen (45) and the second navigation guidewire lumen (64) and the first hatching (46) and the second hatching (65).

6. The ileus catheter with pressure sensing function of claim 1, wherein: the data acquisition system (92) is used for receiving and recording pressure signals acquired from the detection type pressure sensor (91), the pressure signals are converted into digital signals and stored and processed through being connected to the detection type pressure sensor (91), the signal conditioning circuit (93) is used for carrying out signal conditioning to filter noise, amplify the signals or carry out linearization processing, the detection type pressure sensor (91) usually outputs analog signals, the signal conditioning circuit (93) is required to act, the signal conditioning circuit (93) can amplify, filter and the like the analog signals so as to ensure the accuracy and stability of measurement, the data display and reading device (94) is used for displaying data measured by the detection type pressure sensor (91) in a digital mode for intuitively displaying and reading pressure values, and a human-computer interaction interface is provided for a user to read and analyze.

7. The ileus catheter with pressure sensing function of claim 1, wherein: the detection type pressure sensor (91) comprises a sensing element (911), a sealing member (912), a compensating element (913) and a temperature sensor (914), wherein the sensing element (911) is used for converting pressure into an electric signal, the pressure is converted into a corresponding electric signal according to the mode of being deformed by the pressure, the sealing member (912) is used for packaging the internal structure of the detection type pressure sensor (91) so as to prevent dust, liquid and moisture from entering the inside of the sensor, thereby ensuring the performance and service life of the sensor, the compensating element (913) is used for correcting the influence of temperature on pressure measurement, and the temperature sensor (914) is used for measuring the ambient temperature so as to provide more accurate pressure measurement results.

8. The ileus catheter with pressure sensing function of claim 4, wherein: the first annular air bag (51) is positioned at the outer side of the rubber cone body (611), the second annular air bag (52) and the third annular air bag (53) are positioned at the outer side of the rubber column body (612), and one end of the inflation cavity (43) is communicated with the first annular air bag (51).

9. The ileus catheter with pressure sensing function of claim 1, wherein: the connecting air pipe (54) comprises an elastic rubber body (545) and a gas transmission cavity (541) formed in the elastic rubber body (545), a second closed ring (546) is fixedly arranged at the upper end of the gas transmission cavity (541), a first closed ring (544) is fixedly arranged at the lower end of the gas transmission cavity (541), an annular cavity (543) is formed in the connecting air pipe (54), an annular spring (542) is arranged in the annular cavity (543), and the annular cavity (543) is wrapped and arranged on the outer side of the gas transmission cavity (541).

10. The ileus catheter with pressure sensing function of claim 9, wherein: the second closed ring (546) and the first closed ring (544) are members made of the same structure, a through groove (5441) is formed in the first closed ring (544) in a penetrating mode, elastic pieces (5442) are further arranged in the first closed ring (544), four groups of elastic pieces (5442) are arranged, and the outer sides of the four groups of elastic pieces (5442) are fixedly connected with the inner wall of the through groove (5441).