CN115969706A - Jejunum nutrient canal imbedding system - Google Patents

Abstract

The invention relates to the technical field of medical equipment, and particularly discloses a jejunum nutrient canal implanting system which comprises the following components: the guide core can generate bending action so as to intervene into the jejunum section in the body from the outside of the body; the jejunum nutrition tube is sleeved outside the guide core and can generate pushing action along the guide core, and the guide core can be moved out of the jejunum nutrition tube after the jejunum nutrition tube is pushed to a target position along the guide core. The invention adopts the bendable guide core to be matched with the jejunum nutrient canal, the guide core is firstly placed in the jejunum by utilizing the bendable property of the guide core, the jejunum nutrient canal is sleeved on the guide core, the guide core can play a role in supporting and guiding at the same time, the jejunum nutrient canal can be pushed forwards to enable the jejunum nutrient canal to slide along the guide core so as to reach a target position in the jejunum, then the guide core is moved out, and the space occupied by the guide core in the jejunum nutrient canal can form a supply cavity for medicines and nutrient solution to enter.

Description

Jejunum nutrient canal imbedding system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a jejunum nutrient canal imbedding system.

Background

With the development of clinical medicine, the importance of enteral nutrition is increasing, and the purpose is to perform basic nutrition supplement and nutrition treatment on patients who have normal or partial gastrointestinal tract functions but cannot normally eat food orally. Patients with gastrointestinal obstruction, pancreatitis, etc. have slow recovery of gastrointestinal function after surgery, are hindered from taking food, and therefore need to be placed with jejunal nutrient tubes to meet the need for enteral nutrient support, which are not only needed to maintain food intake of patients, but also are necessary passages for food intake and administration of drugs. The jejunal nutrient canal can enter jejunum through gastroscopy, and proper nutrient solution is selected according to the needs of patients and is fed through the nutrient canal. In the prior art, jejunal nutrient canals are generally placed through the nasal cavity to establish nutrient support channels. At present, the jejunal nutrient canal is implanted by a specialist through a large-scale medical device such as a gastroscope or a Digital subtraction angiography (DSA for short); for example, before an operation, the jejunal nutrient canal is required to be inserted into the tip end of the gastric canal and simultaneously sent into the gastric cavity, then the gastric canal is pulled out and separated by the residual stomach end in the operation process, and after the anastomosis is finished, the gastric canal and the naso-jejunal nutrient canal are respectively sent to the gastric cavity and the jejunum.

In the process of placing the jejunum nutrient canal through the nasal cavity, as a general anesthesia patient is in an unconscious state, the patient can not be required to complete swallowing and other actions to be cooperatively placed in the jejunum nutrient canal; meanwhile, the trachea of the general anesthesia patient is inserted with a tracheal catheter, so that the oral pharynx part and the laryngopharynx part of the patient occupy a certain position to prevent the jejunum nutrient canal from going into the esophagus through the channel. Because there is endotracheal tube's upper portion in laryngopharynx portion, lead to the jejunum nutrition tube to return from the pharynx to the oral cavity when here down, when jejunum nutrition tube continued down, jejunum nutrition tube then coiled and rolled up in the oral cavity and can not get into the esophagus, cause jejunum nutrition tube intubate failure, endotracheal tube blocks in the laryngopharynx portion, and nursing staff can't insert the esophagus smoothly through the visual mode, only can go on through the blind insertion mode. The time for inserting the nutrient canal is too long, the accuracy is low, and repeated blind insertion can cause edema of throat tissues to aggravate the intubation difficulty; because abundant spongy venous tissues exist in the nasal cavity, if the blind insertion of the jejunum nutrient canal cannot be successful at one time, nasal mucosa bleeding is easy to cause. To sum up, the operation of placing jejunum nutrient canal through nasal cavity is complicated, and the body feeling of the patient in the operation is very poor.

A certain improvement design is proposed at present for solving the problems, for example, observation assistance of a computer and an imaging system is combined, the end of the jejunum nutrient canal is guided by using external magnetism to realize the embedding of duodenum, but the observation assistance mode of the external imaging is not clear enough, the embedding of the jejunum nutrient canal is very difficult to complete by magnetic guidance, the operation difficulty is very high, the embedding of the jejunum nutrient canal cannot be visually realized, and therefore a great need exists.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the invention provides a jejunum nutrient canal imbedding system. The jejunum nutrient canal is simple in the process of placing, easy to operate and accurate in the position of placing the canal.

In order to achieve the purpose, the invention provides the following technical scheme:

a jejunum nutrient canal implanting system comprises the following components:

the guide core can generate bending action;

the jejunum nutrition tube is sleeved outside the guide core and can generate pushing action along the guide core, and the guide core can be moved out of the jejunum nutrition tube after the jejunum nutrition tube is pushed to a target position along the guide core. .

As a further scheme of the invention: an input port is formed in the tube body of the jejunum nutrient tube positioned outside the body so as to allow medicines and/or nutrient solution to be input into the tube cavity of the jejunum nutrient tube, and an output port is formed in the tube body of the jejunum nutrient tube positioned inside the jejunum so as to allow medicines and/or nutrient solution in the tube cavity to be output into the jejunum;

the output port is a pipe orifice of the jejunum nutrient canal positioned in the jejunum and/or a side output hole arranged on the pipe wall of the jejunum nutrient canal, and the pipe orifice and the side output hole can be selectively closed.

As a still further scheme of the invention: the guide core is a soft endoscope.

As a still further scheme of the invention: the front end of the endoscope is provided with a light-emitting element as a light source and a photosensitive element for receiving and converting a reflected light signal into image information and outputting the image information.

As a still further scheme of the invention: the light emitting element includes at least one optical fiber, and the light sensing element is one of an electrical coupling device, a solid-state image sensor, and a contact image sensor.

As a still further scheme of the invention: the endoscope is provided with a guide element which can guide the jejunum nutrition tube to move along the length direction of the endoscope.

As a still further scheme of the invention: the guide element is the seal wire, has seted up working channel along the axial in the endoscope and has supplied the guide element to insert, and the one end of guide element extends to in the jejunum, and the other end passes through working channel and extends to in the lumen of jejunum nutrition tube.

As a still further scheme of the invention: the length of the endoscope is less than the length of the jejunal feeding tube and the guide member.

As a still further scheme of the invention: the front end of the endoscope is provided with a pH probe to position the endoscope through pH value.

As a still further scheme of the invention: the jejunum nutrient canal is coaxially sleeved outside the endoscope, and the outer diameter of the endoscope is smaller than the inner diameter of the jejunum nutrient canal.

As a still further scheme of the invention: the inner diameter of the jejunum nutrient canal is 2.5 mm-4.5 mm, and the length of the jejunum nutrient canal is 140 cm-180 cm.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention adopts the bendable guide core to be matched with the jejunum nutrient canal, the guide core is firstly placed in the jejunum by utilizing the bendable property of the guide core, the jejunum nutrient canal is sleeved on the guide core, the guide core can play a role in supporting and guiding at the same time, the jejunum nutrient canal can be pushed forwards to enable the jejunum nutrient canal to slide along the guide core so as to reach a target position in the jejunum, then the guide core is moved out, and the space occupied by the guide core in the jejunum nutrient canal can form a supply cavity for medicines and nutrient solution to enter.

2. According to the invention, when a human body needs to input medicines and/or nutrient solution, the medicines and the nutrient solution sequentially pass through the input port, the lumen of the jejunum nutrient canal and the output port and then reach the inside of the jejunum; because the tube orifice of the jejunum nutrient canal in the jejunum and the side output hole arranged on the canal wall can be used as the output port at the same time, and the tube orifice and the side output hole can be designed in a closed way, the tube orifice and the side output hole can be opened at the same time, or the tube orifice can be closed alone, or the side output hole can be closed alone according to the actual requirement, so as to meet different use requirements; when gastrointestinal decompression is needed to be performed on a patient, the pipe orifice can be closed, the side output hole is used as an input port, the functions of drainage and decompression are realized in the jejunum, the phenomenon that backflow and bubbles are brought into the jejunum nutrient canal is avoided, the recovery of the patient is accelerated, and good clinical experience is brought to the patient; when the side output hole and the pipe orifice are opened simultaneously, the medicine and the nutrient solution can be uniformly distributed to the whole section of jejunum when the nutrient solution and the medicine are input, so that the conveying and absorbing speed is improved; when the nozzle is opened independently, the medicine can be accurately output to the target position corresponding to the nozzle.

3. The guide core of the invention can be a soft endoscope, which has the characteristics of soft material and bending, and the insertion end part of the endoscope can be adjusted in angle, so that the endoscope has small volume and is easy to operate by doctors; through the cooperation of the different optic fibre bundles of emission wavelength, can satisfy doctor's clinical operation's individualized demand, for example can adjust field of vision luminance according to the field of vision light and shade condition of observation, mainly play the effect of carrying out the illumination to the target location, pass back the image information of endoscope or jejunum nutrition tube position department in real time, the clinician of being convenient for in time accurately masters the actual condition of putting into of the jejunum nutrition tube of target location, the condition of repeated inserting and probably causing the bleeding of nasal mucosa that the blind insertion brought for the patient has been avoided, shorten the time of putting into, reduce patient's misery, satisfy the visual requirement of putting into of jejunum nutrition tube.

4. The light-emitting element and the photosensitive element can firstly emit imaging detection light towards a target position through matching, receive imaging response light from the target position, determine the central direction deviation condition of the position of the endoscope relative to the target position based on the distribution condition of the signal intensity of the imaging response light in the imaging optical fiber bundle, and can meet the clinical visualization requirement on high pixel and high image quality through images recorded by the photosensitive element, thereby being convenient for doctors to observe.

5. The invention can judge the intestinal condition after acquiring the image information of the target position through the endoscope, and can accurately place the jejunum nutrient canal into the target position through the traction of the guide wire under the guidance of the guide element subsequently, thereby shortening the placing time and reducing the pain of patients.

6. By reasonably setting the lengths of the endoscope, the jejunum nutrient canal and the guide element, on one hand, the guide element in the endoscope can conveniently guide the placement position of the jejunum nutrient canal, and on the other hand, the endoscope can be conveniently moved out after the jejunum nutrient canal is conveyed to a target position.

7. According to the invention, through the coaxial arrangement of the jejunum nutrient canal and the endoscope, the endoscope can be conveniently sent to a target position through the observation of the endoscope; on the other hand, the jejunum nutrient canal is sleeved outside the endoscope, so that the endoscope can be moved out of the jejunum nutrient canal after reaching the target position along with the endoscope, and the jejunum nutrient canal is left for clinical operation; the reasonable arrangement of the inner diameter and the length of the jejunum nutrient canal can better match the position of the jejunum of the human body; compared with the traditional large-diameter gastroscope, the flexible endoscope has the advantages that the inner diameter is designed to be smaller, the diameter is smaller, and the parts are simple, so that the jejunum nutrient canal can be sleeved outside the endoscope, the endoscope provides illumination to send the guide element and the jejunum nutrient canal to a target part, the jejunum nutrient canal is left to work independently, and the guide element and the whole flexible endoscope can be removed from the body.

Drawings

FIG. 1 is a schematic view of the mating of a hollow enteral feeding tube and an endoscope in accordance with an embodiment of the present invention.

Fig. 2 is a schematic structural view of a hollow intestine nutrient canal according to an embodiment of the invention.

Fig. 3 is a schematic structural view of an endoscope in the embodiment of the present invention.

FIG. 4 is a schematic view of the structure of the front end of the endoscope in the embodiment of the present invention.

In the figure:

10. a jejunal nutrient canal;

101. a tube wall; 102. a lumen; 103. a pipe orifice; 104. a side output aperture;

20. an endoscope;

201. a light emitting element; 202. a photosensitive element; 203. a guide member; 204. and (4) a pH probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, in an embodiment of the present invention, a jejunal feeding tube insertion system includes:

the jejunal nutrient canal 10, as shown in fig. 2, is a cylindrical tube, and may be made of silica gel or other biological materials (e.g., non-toxic, strong, acid-resistant, and temperature-resistant polyurethane materials). The tubular body of the jejunal nutrient canal 10 is flexible and can be introduced into the body from outside the body (usually from a nasal cavity) during surgery until its distal end, which represents the end of the jejunal nutrient canal 10 introduced into the body, is located within the jejunum, typically with the jejunal nutrient canal 10 remaining in the body for a period of time not exceeding three months.

The endoscope 20 is bendable and soft, and the front end of the endoscope 20 has a specific bending degree, and the material of the endoscope can be memory alloy, so that the endoscope can be quickly recovered after the bending degree is changed under the action of external force.

The design of the curvature can be matched with the forward, backward and rotation operations in the placement process of the endoscope 20, so that the visual range of an operator is enlarged, and the optimal tube placement position can be conveniently found; meanwhile, the bending design enlarges the size of the supporting space of the endoscope 20, so that the nutrition tube can be conveniently pulled to a target jejunum area through the matching of a catheter guide wire, wherein the catheter guide wire is the preferred embodiment of the guide element 203.

The outer diameter of the endoscope 20 is less than the inner diameter of the jejunal nutrient canal 10 so that the jejunal nutrient canal 10 can be sleeved outside the endoscope 20. The endoscope 20 can be used once or recycled and cleaned for multiple times according to actual conditions.

The jejunal nutrient canal 10 is placed by means of an endoscope 20. The jejunum nutrient canal 10 is firstly sleeved on the endoscope 20, the endoscope 20 is firstly placed at a jejunum target position in a body from a nasal cavity, then the jejunum nutrient canal 10 is transferred to the jejunum target position along the endoscope 20 through the sliding fit of the jejunum nutrient canal 10 and the endoscope 20, and finally the endoscope 20 is moved out from a lumen 102 of the jejunum nutrient canal 10.

The endoscope 20 and the jejunum nutrient canal 10 are preferably coaxially arranged, and when the jejunum nutrient canal 10 is coaxially pushed along the endoscope 20, on one hand, the jejunum nutrient canal has small damage to a human body and is easy to accurately push in place; on the other hand, since the jejunal nutrient canal 10 is sleeved outside the endoscope 20, the endoscope 20 can be removed after reaching the target position under the guidance of the endoscope 20 as the endoscope 20 reaches the target position, leaving the jejunal nutrient canal 10 for the clinical operation.

After the endoscope 20 is moved out of the lumen 102 of the jejunal nutrient canal 10, the lumen 102 of the jejunal nutrient canal 10 can form a supply channel for inputting the medicine or nutrient solution input from the outside of the donor into the jejunum, so that the body feeling of a patient is better, the success rate of the operation is higher, and noninvasive implantation can be realized.

The jejunal nutrient canal 10 is positioned at the external orifice 103 as an input port for the infusion of drugs or nutrient solution into the lumen 102.

The jejunal nutrient canal 10 can also independently seal a pipe orifice 103 positioned outside the body, and a side output hole 104 is arranged on the pipe wall 101 positioned outside the body to input medicine or nutrient solution.

The jejunum nutrient canal 10 can be provided with a side output hole 104 on the canal wall 101 outside the body, and the mouth 103 and the side output hole 104 of the jejunum nutrient canal 10 outside the body can be used as input ports at the same time so as to respectively convey medicines and nutrient solution.

The daily accessible closing cap shutoff of input port of jejunum nutrient canal 10, the diameter of closing cap and the diameter of input port coincide, have prevented the backward flow of gastric juice food when isolated foreign matter entering.

The tube orifice 103 of the jejunum nutrient canal 10 positioned in the jejunum is an output port, and the medicine and nutrient solution in the tube cavity 102 can flow out and then directly reach the jejunum.

The jejunal feeding tube 10 may also be provided with side outlet holes 104 in the tube wall 101 located in the jejunum for the delivery of medication and nutrient solution. The number and arrangement of the side output holes 104 are not limited, and the side output holes are generally uniformly spaced along the length direction of the jejunum nutrient canal 10, and the distance between adjacent side output holes 104 can be set to 3cm.

Electromagnetic switches can be additionally arranged on the pipe orifice 103 and the side output hole 104 to control the opening and closing of the pipe orifice 103 and the side output hole 104, and the pipe orifice 103 or the side output hole 104 is utilized to output medicine or nutrient solution according to actual needs of actual conditions. The nozzle 103 and the side outlet hole 104 may also be provided as manual switches that are manually opened or closed prior to the pipe setting operation.

For example, when gastrointestinal decompression is required to be performed on a patient, the pipe orifice 103 can be closed, the side output hole 104 serves as an input port, drainage and decompression functions are achieved in the jejunum, the phenomenon that backflow and bubbles are brought into the jejunum nutrition tube 10 is avoided, the recovery time of the patient is shortened, and good clinical experience is brought to the patient.

In order to avoid injuring the soft tissues in the body, the pipe opening 103 of the jejunal nutrient canal 10 is generally designed to be arc-surface-shaped without a sharp section, so that the soft tissues cannot be injured when the jejunal nutrient canal moves.

In order to conveniently observe the embedding depth of the jejunal nutrient canal 10, scale marks can be uniformly arranged on the canal wall 101, and the scale marks are usually taken as scale units in centimeters. The graduations may be provided on the outer tube wall, or on the inner tube wall of the jejunal nutrient canal 10 when the jejunal nutrient canal 10 is a transparent tube.

The jejunal nutrient canal 10 is typically set to an inner diameter R of 2.5mm to 4.5mm, preferably 3mm, and typically to a length of 140cm to 180cm, preferably 155cm, with reasonable settings of length and inner diameter well matching the location of the human jejunum.

In order to realize the visual navigation of the endoscope 20, a light emitting element 201 and a light sensing element 202 are arranged at the front end of the endoscope 20.

The light emitting element 201 is a light source including one or more optical fibers, and can emit optical fiber bundles having different wavelengths. One or more imaging fiber bundles extend longitudinally along the central axis of the endoscope 20, each of which has attached at its front fiber end face an objective lens of a size comparable to that of the imaging fiber bundle.

Through the cooperation of the different optic fibre bundles of emission wavelength, can satisfy doctor's clinical operation's individualized demand, for example can adjust field of vision luminance according to the field of vision light and shade condition of observing, mainly play the effect of carrying out the illumination to the target location, the clinical doctor of being convenient for in time accurately masters the actual condition of putting into of jejunum nutrient canal 10 of target location, avoided blind inserting to reinsert many times and probably cause the condition that the nasal mucosa blew for the patient brings.

The photosensitive element 202 is one of an electric coupling device, a solid-state image sensor, and a contact image sensor. The light emitting element 201 can emit imaging probe light toward the target position and receive imaging response light from the target position, and therefore the present position of the endoscope 20 can be determined as a center direction deviation condition with respect to the target position based on the distribution condition of the signal intensity of the imaging response light in the imaging optical fiber bundle.

The photosensitive element 202 has a photosensitive unit, which can convert an image into an electrical signal, and then the electrical signal is converted into a digital image for a doctor to observe through an analog-to-digital converter, so that data acquisition, image recording and the like can be completed.

The photosensitive element 202 may also be selected to be a CMOS (complementary metal oxide semiconductor) sensor or a CCD (charged coupled device) sensor.

The CMOS is a complementary metal oxide semiconductor, which is a semiconductor mainly made of silicon and germanium elements, and realizes basic functions through negatively and positively charged transistors on the CMOS, and currents generated by the two complementary effects can be recorded and interpreted into images by a processing chip. The CCD has the characteristics of high sensitivity but low response speed, and is not suitable for a high-resolution progressive scanning mode adopted by a high-definition monitoring camera. In comparison, CMOS sensors typically include: an image sensor core (which is the multiplexing of discrete signal levels to a single output, much like a CCD image sensor), all sequential logic, a single clock, and programmable functions within the chip such as gain adjustment, integration time, windowing, and analog-to-digital converters. I.e., the entire system of the CMOS sensor including the image array logic registers, memory, timing generator and converter. Compared with the traditional CCD image system, the whole image system is integrated on one chip, so that the power consumption is reduced, the advantages of light weight, small occupied space and lower overall price are achieved, and the CCD image system is more suitable for acquiring and capturing clinical medical influences.

To further pinpoint the location of the endoscope 20, the front end of the endoscope 20 is also provided with a pH probe 204. Due to the difference of the pH value of different positions of the gastrointestinal tract, in the process of conveying the endoscope 20 to the target position, the pH probe 204 feeds back the pH value of the environment in which the front end of the endoscope 20 is positioned in real time, and the real-time position of the endoscope 20 is judged in an auxiliary manner through the pH value environment, so that the endoscope 20 can smoothly reach the target jejunum area.

In the process of placing the endoscope 20 from the input scale to the output scale, the pH value is gradually changed from acidic to alkaline, the doctor is difficult to quickly and accurately judge the position of the endoscope 20 by experience in the whole placing process, and the introduction of the pH probe 204 can ensure that the doctor can judge the position of the endoscope at any time according to the pH value in the placing process so as to ensure that the jejunum nutrition tube 10 is quickly and accurately placed in the output scale.

In order to facilitate the traction of the jejunal feeding tube 10, a guiding element 203 can be arranged inside the endoscope 20, the guiding element 203 can be a metal guide wire, and the guiding element 203 can also be made of a single thin stainless steel wire or a double strand stainless steel wire, or a twisted body formed by weaving a plurality of strands of metal monofilaments.

The material of the guiding member 203 is required to have good flexibility, smoothness and torsion control, so that the guiding member 203 can be inserted into the target position more smoothly.

In order to further improve the lubricating performance of the guiding element 203, a coating, such as a polyvinylpyrrolidone (PVP) coating, may be applied on the surface of the guiding element 203, so that the guiding element 203 has good film forming property, moisture absorption and lubricity, and good biocompatibility and safety, and the phenomenon that the endoscope 20 drives the jejunal nutrient canal 10 to bend and displace when being pulled out from the jejunal nutrient canal 10 can be avoided.

The guide member 203 is preferably axially insertable into the working channel of the endoscope 20 in an unlimited manner, with one end thereof being initially introduced into the stomach or jejunum along the working channel of the endoscope 20 and the other end thereof extending into the jejunal nutrient canal 10 along the working channel.

The jejunum nutrient canal 10 is accurately pulled to a target position through the guidance of the guiding element 203, so that the placing time is shortened, the pain of a patient is reduced, the operation and the position judgment of medical staff are facilitated, and the placing operation of the jejunum nutrient canal 10 adopting the guiding element 203 is simpler and quicker.

On one hand, a standard interventional catheter guide wire can be introduced into a working channel in the endoscope 20, and the guide wire catheter can be placed into the jejunum under the direct vision of the endoscope 20 by utilizing the coaxial catheter technology; on the other hand, saline can be injected through the working channel to wash the jejunum to facilitate imaging.

The endoscope 20 may further include a front end portion, a bending portion, an insertion portion, and an operation portion, which are connected in this order, and constitute a complete hose.

The endoscope 20 may also be replaced with the following:

a small-diameter tubular crawling robot can be selected, the crawling robot crawls from a nasal cavity to a jejunum section in a body through remote control or manual control, and a shell of the robot is made of medical materials. The robot head can be provided with a camera and a light source, and image information of the position of the head is transmitted back in real time to judge whether the target position is reached.

The medical device can also be used for selecting shorter tubular objects which are made of medical materials, the tubular objects are connected through connecting structures such as universal joints and movable joints to form a multi-section type long tube structure to be inserted into a human body, a camera and a light source are installed at the foremost end, and the head portrait of the head is transmitted back in real time to judge whether the head portrait reaches a target position.

To facilitate placement of the endoscope 20, the outer diameter R of the endoscope 20 is less than the inner diameter R of the jejunal feeding tube 10, and the length of the endoscope 20 is less than the length of the jejunal feeding tube 10 and the guide member 203.

According to the actual requirement of human jejunum nutrient solution delivery, the jejunum nutrient canal 10 can be set with a proper inner diameter on the premise of matching the jejunum position, because the jejunum nutrient canal 10 is sleeved outside the endoscope 20, the outer diameter R of the endoscope 20 is required to be smaller than the inner diameter R of the jejunum nutrient canal 10, and the length of the jejunum nutrient canal 10 and the length of the guide element 203 are set to be longer than that of the endoscope 20, so that the guide element 203 in the endoscope 20 can guide the placement position of the jejunum nutrient canal 10 more conveniently on one hand, and the endoscope 20 can be moved out after the jejunum nutrient canal 10 is delivered to a target position on the other hand.

In order to facilitate the transportation of the jejunum nutrient canal 10, an arc-surface-shaped positioning bulge can be further arranged on the surface of the endoscope 20 along the length direction, and a positioning groove matched with the positioning bulge on the surface of the endoscope 20 in shape is formed in the inner pipe wall of the jejunum nutrient canal 10, so that the positioning bulge on the endoscope 20 can form clamping fit, and the jejunum nutrient canal 10 can be stably pushed forwards in a sliding mode through the positioning of the groove and the bulge until the jejunum nutrient canal 10 reaches a target position.

To facilitate placement of the jejunal nutrient canal 10, there is a standardized placement method as follows:

s1, under the illumination of a light-emitting element 201 in an endoscope 20, a guide element 203 is accurately placed at a target position through the observation of a photosensitive element 202;

s2, under the guiding action of the guiding element 203, the jejunum nutrient canal 10 is placed;

s3, after the jejunal nutrient canal 10 reaches the target site, the endoscope 20 is removed, and nutrient solution is injected into the lumen 102 of the jejunal nutrient canal 10 to supply the requirement of a patient.

The basic principles of the present application have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present application are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.

The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations should be considered as equivalents of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims (11)

1. A jejunum nutrient canal imbedding system is characterized by comprising the following components:

the guide core can generate bending action;

the jejunum nutrition tube is sleeved outside the guide core and can generate pushing action along the guide core, and the guide core can be moved out of the jejunum nutrition tube after the jejunum nutrition tube is pushed to a target position along the guide core.

2. The jejunal nutrient canal insertion system of claim 1, wherein the tubular body of the jejunal nutrient canal outside the body is provided with an input port for the input of drugs and/or nutrient solution into the lumen of the jejunal nutrient canal, and the tubular body of the jejunal nutrient canal inside the jejunal nutrient canal is provided with an output port for the output of drugs and/or nutrient solution in the lumen into the jejunum;

the output port is a pipe orifice of the jejunum nutrient canal positioned in the jejunum and/or a side output hole arranged on the pipe wall of the jejunum nutrient canal, and the pipe orifice and the side output hole can be selectively closed.

3. The jejunal nutrient canal insertion system of claim 1 or 2, wherein the guide core is a flexible endoscope.

4. The system of claim 3, wherein the endoscope is provided at its distal end with a light emitting element as a light source and a light sensing element for receiving and converting the reflected light signal into image information for output.

5. The jejunal nutrient canal deployment system of claim 4, wherein the light emitting element comprises at least one optical fiber and the light sensing element is one of an electrical coupling device, a solid-state image sensor, and a contact image sensor.

6. The system of claim 3, wherein the endoscope is provided with a guide member for guiding the movement of the jejunal nutrient canal along the length of the endoscope.

7. The jejunal feeding tube insertion system of claim 6, wherein the guide member is a guide wire, a working channel is axially formed in the endoscope for insertion of the guide member, one end of the guide member extends into the jejunum, and the other end of the guide member extends into the lumen of the jejunal feeding tube through the working channel.

8. The jejunal nutrient tube insertion system of claim 6, wherein the length of the endoscope is less than the length of the jejunal nutrient tube and the guide member.

9. The jejunal nutrient canal insertion system of claim 3, wherein the endoscope is provided at its front end with a pH probe for locating the endoscope by pH.

10. The jejunal nutrient canal deployment system of claim 3, wherein the jejunal nutrient canal is coaxially disposed about the endoscope, the endoscope having an outer diameter less than an inner diameter of the jejunal nutrient canal.

11. The jejunal nutrient canal insertion system of claim 1 or 2, wherein the jejunal nutrient canal has an inner diameter of 2.5mm to 4.5mm and a length of 140cm to 180cm.

Images