CN209286207U

CN209286207U - Enteral feeding pipe and enteral are fed with system

Info

Publication number: CN209286207U
Application number: CN201821154837.1U
Authority: CN
Inventors: 多伦·贝瑟; 盖伊·本以斯拉
Original assignee: Nyson Medical Co Ltd
Current assignee: Nyson Medical Co Ltd; Envizion Medical Ltd
Priority date: 2016-02-16
Filing date: 2017-02-16
Publication date: 2019-08-23
Anticipated expiration: 2027-02-16
Also published as: CN207745355U; EP3207915A1; DE202017100856U1

Abstract

The utility model discloses enteral feeding pipes and enteral to be fed with system.A kind of system comprising nose catheter, the nose catheter include nose stomach setting element, feeding mechanism, are configured to the aspirating mechanism and the stomach mechanism of decompressor that hermetically attract the inner wall of esophagus against the nose catheter.

Description

Enteral feeding pipe and enteral are fed with system

The application be the applying date be on February 16th, 2017, application No. is 201720142693.7, utility model is entitled The divisional application of the application of " nose catheter and nose gastric system (original name is known as " nose catheter ") ".

Technical field

The utility model relates generally to the nose stomach positioning member that one kind is embedded in nose catheter (nasogastric tube) Part (nasogastric location element).

Background technique

Enteral feeding (enteral feeding) is the form of a kind of vein input nutrient solution and Metabolic support, wherein seeking It supports formula or drug is fed directly to gastrointestinal tract, be delivered to stomach or duodenum.Nose catheter (NGT) is for being fed with and applying drug With other oral agents.Pipe is inserted into the esophagus stomach function regulating of patient, to ensure that agent enters channel of the stomach without entering lung. NGT can be also used for from stomach aspiration fluid.

However, may have disadvantage using NGT.Slight complication includes nosebleed, nasosinusitis and sore-throat.Go out sometimes Now more significant complication, erosion, esophageal perforation, lung sucking, the collapse of lung or pipe including the nose in the position of anchoring pipe Encephalic is placed.

What is worse, during feeding, it may cause excessive stomach pressure.Often, body by discharge gas or liquid or Reflux fluid mitigates this excessive stomach pressure.Fluid passes through esophagus and is discharged to mouth or nasal meatus from stomach.Reflux fluid may be inhaled Enter in lung, the possibility risk with aspiration pneumonia, the bacterium infection in pharyngeal or esophagus or any other disease.Therefore, perhaps More researchs connect the use of NGT and the increase of mechanical ventilationassociatepneumonia pneumonia (VAP).VAP is intensive care unit (ICU) In the most common inside-hospital infection, and and long-term inpatients, increased health expenditure it is related to the high attribution death rate.

No. 2013/0310806 offer nose catheter of U.S. Patent Application Publication comprising have for be connected to substance or The main chamber of one or more proximal connectors of pressure source, and one or more vacuum chambers of main chamber are peripherally surrounded, it is each A vacuum chamber includes vacuum seal, and vacuum seal includes one or more suction ports, for hermetically attracting food The inner wall in road and its against.

It was simultaneously removed in the presence of to the risk that can significantly reduce reflux food and development VAP, and by stomach decompression The urgent need of the NGT of the stomach Qi body of amount.

Utility model content

Following embodiment and its aspect has been described and illustrated in conjunction with system, tool and method, these systems, tool and Method is intended to exemplary and illustrative, is non-limiting in range.

According to an embodiment, a kind of system is provided comprising nose catheter, the nose catheter include feeding mechanism, construction At the inner wall of hermetically attraction esophagus against the aspirating mechanism of the nose catheter, nose stomach setting element and possible stomach negative booster Structure, and/or be configured to for liquid to be retracted to the pump of nose catheter from reservoir.

According to another embodiment, a kind of system is provided, comprising: nose catheter, the nose catheter have length and include: (a) main chamber has the one or more proximal connectors for being configured to connect to substance source or pressure source；(b) at least two is true Cavity peripherally surrounds main chamber；(c) at least two suction ports, at least two suction ports are configured to hermetically Attract esophagus inner wall and its against, each of described at least two suction ports at least two vacuum chamber Different vacuum chambers is associated, wherein at least two suction ports are dispensed along at least two of the length of the nose catheter Between different positions；And (d) nose stomach setting element.In addition, the system can also include and at least two vacuum chamber At least one of at least one associated stomach decompression port, length of at least one the described stomach decompression port along the nose catheter The distal end of described at least two different positions is arranged in degree.

According to another embodiment, a kind of system is provided, comprising: nose catheter, the nose catheter have length and include: (a) at least three chamber；(b) main chamber has the one or more proximal connectors for being configured to connect to substance source or pressure source； (c) at least two suction ports, at least two suction ports are respectively and in peripherally at least three vacuum chambers of encirclement main chamber Different vacuum chambers it is associated, at least two suction ports be configured to hermetically to attract the inner wall of esophagus and its against, Wherein at least two suction ports are dispensed along between at least two different positions of the length of the nose catheter；(d) At least one stomach decompression port, at least one stomach decompression port is associated at least one other vacuum chamber, it is described at least The distal end of at least two different locations is arranged in along the length of the nose catheter for one stomach decompression port；And (e) nose stomach positions Element.

According to an embodiment, a kind of method is also provided, is used to for nose catheter being located in the esophagus of patient, it is described Nose catheter include be configured to hermetically to attract the inner wall of esophagus against the aspirating mechanism of the nose catheter, nose stomach setting element, with And the possible stomach mechanism of decompressor；Apply vacuum to depressurize to stomach Qi；And apply vacuum hermetically to attract the inner wall of esophagus With nose catheter against.

According to an embodiment, a kind of method is also provided, is used to position nose catheter into the esophagus of patient, it is described Nose catheter with length and including having main chamber for being connected to one or more proximal connectors of substance source or pressure source, Three or more vacuum chambers in the periphery of main chamber, two or more suction ports, the two or more pumpings It is associated from the different vacuum chambers in three or more described vacuum chambers to inhale each of port, nose stomach setting element, And at least one possible stomach decompression port, at least one stomach decompression port are arranged along the length of the nose catheter at least The distal end of two different locations；Apply vacuum to depressurize to stomach Qi；And vacuum is interchangeably applied to described three or More vacuum chambers, so as to every time the different location along the esophagus hermetically attract esophagus inner wall and nose catheter against.

In some embodiments, nose stomach setting element is arranged at least one vacuum chamber.In another embodiment In, it does not include at least one vacuum chamber of suction ports that nose stomach setting element, which is arranged in,.

In some embodiments, the plastics of any one or more in main chamber or peripheral cavity are arranged in nose stomach setting element In wall.

In some embodiments, the method for the utility model further includes applying vacuum so that fluid is sucked out from esophagus.

In some embodiments, system further includes the vacuum source for being connected to the vacuum chamber.

In some embodiments, the vacuum chamber is connected to vacuum source via pressure regulator and valve.

In some embodiments, main chamber and the vacuum chamber are configured to a unit.

In some embodiments, the vacuum chamber is the unit separated with main chamber, and the wherein vacuum chamber It is slidable relative to main chamber.

In some embodiments, main chamber and the vacuum chamber are arranged to the pipeline of arranged concentric.

In some embodiments, system further includes the one or more auxiliary in at least four suction ports nearside Suction ports.

In some embodiments, each of described at least four suction ports include the edge of gradual change (graduated edging)。

In some embodiments, system further includes the manifold for being configured to for the vacuum chamber being connected to the valve.

In some embodiments, the manifold is transparent.

In some embodiments, the vacuum chamber includes at least six vacuum chambers.

In some embodiments, at least one of described at least four suction ports include the length along the nose catheter Two or more suction ports that a part of degree is continuously arranged.

In some embodiments, the nose catheter further includes two or more longitudinal radiopaque bands.

In some embodiments, the radiopaque band in the two or more longitudinal directions is embedded in the nose catheter In outer wall.

In some embodiments, this method further includes adjusting vacuum to make suction level over time not being constant 's.

In some embodiments, this method further includes adjusting described four of four or more vacuum chamber or more The vacuum of multiple suction ports, to generate the vermicular movement or other oscillating movements of esophagus.

In some embodiments, the application of the vacuum is limited across at least 60% channel of esophagus.

In some embodiments, this method further includes visually monitoring transparent manifold, and the transparent manifold is by described four Or more vacuum chamber and the valve be linked together the reflux for stomach substance.

Other than the illustrative aspect and embodiment of foregoing description, by reference to attached drawing and study following detailed Description, aspect and embodiment in addition will be apparent.

The utility model additionally provides the following contents:

According to an embodiment, the utility model provides a kind of nose catheter, has length and includes:

(a) main chamber has the one or more proximal connectors for being configured to connect to substance source or pressure source；

(b) at least two vacuum chamber peripherally surrounds main chamber；

(c) at least two suction ports, at least two suction ports be configured to hermetically to attract the inner wall of esophagus with It is against each of described at least two suction ports are related to the different vacuum chambers at least two vacuum chamber Connection, wherein at least two suction ports are dispensed along between at least two different positions of the length of the nose catheter； And

(d) at least one nose stomach setting element, it includes in the nose catheter.

In some embodiments, the nose catheter further includes related at least one of at least two vacuum chamber Connection at least one stomach decompression port, at least one described stomach decompression port along the nose catheter length setting it is described at least The distal side of two different positions.

In some embodiments, include in the nose catheter described at least one nose stomach setting element be included in it is outer In enclosure cavity.

In some embodiments, include in the nose catheter described at least one nose stomach setting element be included in it is true The wall of cavity, main chamber wall or combinations thereof in.

In some embodiments, the peripheral cavity is sealed at proximal end and distal end.

In some embodiments, the nose catheter further includes feeding mechanism and aspirating mechanism, the feeding mechanism include Main chamber with the one or more proximal connectors for being configured to be connected to substance source or pressure source, and the wherein suction machine Structure and/or the stomach mechanism of decompressor include at least one vacuum chamber.

In some embodiments, the aspirating mechanism includes at least two chambers for peripherally surrounding main chamber, and At least two suction ports be configured to hermetically to attract the inner wall of esophagus and its against.

In some embodiments, the nose catheter further includes that one or more auxiliary in the suction ports proximal end are taken out Inhale port.

In some embodiments, each of described at least two suction ports include the edge of gradual change.

In some embodiments, the nose catheter further includes the discrimination for being configured to for the vacuum chamber being connected to the valve Pipe.

In some embodiments, the manifold is transparent.

In some embodiments, at least two vacuum chamber includes 3-8 vacuum chamber.

In some embodiments, the two or more longitudinal radiopaque bands are embedded in the nose catheter Outer wall in.

In some embodiments, the nose stomach setting element is electromagnet.

According to another embodiment, the utility model additionally provides a kind of nose gastric system, including above-described nose stomach Pipe and feeding source, suction source or combinations thereof.

According to another embodiment, the utility model additionally provides a kind of for depressurizing stomach Qi body and stream being sucked out from esophagus The method of body, comprising:

Above-described nose catheter is introduced in the esophagus of patient；

Apply vacuum to depressurize stomach Qi body；

Apply vacuum so that fluid is sucked out from esophagus；And

Apply vacuum so as to hermetically attract esophagus inner wall and the nose catheter against.

In some embodiments, the method also includes adjust the described two of the two or more vacuum chambers or The vacuum of more suction ports, to generate the vermicular movement or other oscillating movements of esophagus.

In some embodiments, the application of the vacuum limits at least 60% channel across esophagus.

In some embodiments, the method also includes the transparent manifold of vision monitoring, described in the transparent manifold connection Four or more vacuum chambers and the valve are used for the reflux of stomach substance.

According to another embodiment, the utility model additionally provides a kind of nose gastric system, comprising:

(1) nose catheter, with length, proximal end and distal end, comprising:

(b) at least two vacuum chamber peripherally surrounds main chamber；

(d) at least one nose stomach setting element, it includes in the nose catheter；And

(2) (a) computerized processor (b) shows equipment, is operably coupled to the processor；(c) detector Equipment, is operably coupled to the processor, and the detector device is configured to be located on the predetermined position of subject Side；At least one described nose stomach setting element is operably coupled to the processor, (d) store equipment, storage: represent by First preset lines of the intermediate sagittal line of examination person；Represent the second preset lines of scheduled thorax anatomies；And instruction, when by When the processor executes described instruction, make the processor and the display equipment, the detector device, described at least one A nose stomach setting element and the storage equipment cooperation are being advanced at least one described nose stomach setting element or from described While nose catheter removes: display represents first preset lines of the intermediate sagittal line of subject and represents the predetermined of subject Thorax anatomies second preset lines；For esophagus section, determine and show instruction from the nose stomach setting element to First number of the first distance of the detector device；For stomach section and/or chest section, determines and show instruction from the nose stomach Setting element to the detector device second distance second number.

In some embodiments, when by the processor execute described instruction when, described instruction make the processor with The detector device, the nose stomach setting element and the storage equipment cooperation, the nose stomach setting element before Into or from while nose catheter removal, the route across subject's body is recorded.

In some embodiments, the route includes X-Y location.

In some embodiments, first preset lines and second preset lines are in the xiphisternum for representing subject Intersect at the point of knot.

In some embodiments, the nose stomach setting element is configured to transmission of electromagnetic signals.

In some embodiments, the nose stomach setting element is multiple receiving coils, and the multiple receiving coil receives Electromagnetic signal from the nose stomach setting element.

In some embodiments, when by the processor execute described instruction when, described instruction make the processor with The display equipment, the detector device, the nose stomach setting element and the storage equipment cooperation, it is fixed in the nose stomach While bit unit is advancing or removing from the nose catheter, generates and show the traveling side for indicating the nose stomach setting element To arrow.

In some embodiments, when by the processor execute described instruction when, the nose stomach setting element While advancing or remove from the nose catheter, described instruction sets the processor with the display equipment, the detector Standby, the described nose stomach setting element and the storage equipment cooperation.

Detailed description of the invention

According to the detailed description carried out below in conjunction with attached drawing, the utility model is will be more fully understood and understood, in attached drawing In:

Fig. 1 is the simplification that non-limiting embodiments according to the present utility model constructed and be operable nose catheter Schematic diagram；

Fig. 2 is the simplification sectional view of the NGT of Fig. 1 of the line II-II interception in Fig. 1；

Fig. 3 is embodiment according to the present utility model for aspirating and sealing nose stomach of the inner wall against NGT of esophagus The rough schematic view of pipe；

Fig. 4 A is one that another embodiment according to the present utility model constructed and be operable nose catheter The rough schematic view for the transparent front view divided；

Fig. 4 B is the rough schematic view of the cross section of the line I-I along the nose catheter of Fig. 4 A；

Fig. 4 C is the rough schematic view of the cross section of the line II-II along the nose catheter of Fig. 4 A；

Fig. 5 is the schematic diagram of manifold；

Fig. 6 is the cross section of nose catheter；

Fig. 7 A is the rough schematic view of a part of the nose catheter of non-limiting embodiments according to the present utility model；

Fig. 7 B is a part including decompression port of the nose catheter of non-limiting embodiments according to the present utility model Simplification enlarged drawing；And

Fig. 8 A, Fig. 8 B are non-limiting embodiments constructions according to the present utility model and are operable nose catheters Rough schematic view.

Specific embodiment

The utility model offer includes the system and method for the nose catheter (NGT) containing nose stomach setting element, below In the system and method are described in more detail.System described herein includes having nose stomach setting element and vacuum control unit NGT.Esophagus is connected to pipe by vacuum control unit, to make that tracheae can not be flowed back into along the food of esophagus.In addition, vacuum Control unit can make the abdomen of subject, including but not limited to stomach or intestines decompression.

According to some embodiments, the NGT of the utility model is configured to navigate to and/or positioned at the specific region of esophagus In, and be configured to show as feeding pipe and stomach relief pipe.Therefore, NGT can directly give nutrients or drug tested The stomach or intestines of person, and at the same time or interchangeably realizing that stomach depressurizes.

According to an embodiment, it includes the system for being attached to the NGT of nose stomach setting element that the utility model, which provides,.According to One embodiment, the utility model provide the method for determining the position of nose stomach setting element.In one embodiment, Nose stomach setting element is magnetic probe.In one embodiment, nose stomach setting element is detected by least one magnetometer. In another embodiment, system as described herein includes the NGT and at least one magnetic for being attached to nose stomach setting element Power meter.

In another embodiment, NGT as described herein is nose stomach and intestine inner tube.In another embodiment, such as NGT described herein is enteral pipe.In another embodiment, nose stomach setting element includes enteral setting element.Another In a embodiment, enteral setting element is located at the distal side of the stomach point of NGT.In another embodiment, NGT includes enteral Setting element and nose stomach setting element.In another embodiment, the distal end of NGT reaches stomach.In another embodiment, NGT occupies esophagus.In another embodiment, the NGT including nasointestinal tube (NET) also reaches at least one segment of small intestine. In another embodiment, the NGT including nasointestinal tube (NET) occupies pylorus back segment (post pyloric segment).

In one embodiment, the NGT including nose stomach setting element is tracked by electromagnetic tracking system.In another reality It applies in scheme, nose stomach setting element includes the coil as transmitter, receiver or both.In another embodiment, nose Stomach setting element is constructed including its system with industry-standard coil framework (ISCA).In another embodiment, nose Stomach setting element uses six or more emitter coils being unfolded in space and one or more including its system The array of a quasi- dipole receiver coil.In another embodiment, nose stomach setting element or system include quasi- using three axis The ISCA tracker framework of dipole coil transmitter and the quasi- dipole coil receiver of three axis.

In another embodiment, system as described herein include: be wired to shared device or box transmitter and Receiver.In another embodiment, system as described herein is wireless electromagnetic tracking system, allow track NGT with It moves freely, without being limited by the connection with transmitter or receiver.In another embodiment, transponder is located at NGT It is interior.In another embodiment, transponder be located at close to patient place or in the box on patient, away from NGT 2cm To 30cm.

In one embodiment, nose stomach setting element is located at the pre-position in NGT.In one embodiment, Nose stomach setting element is permanent magnet.In one embodiment, nose stomach setting element is AC electromagnet.In an embodiment In, nose stomach setting element is to be mounted in intracavitary cylindrical body, as described in this article.

In one embodiment, nose stomach setting element is the cylindrical body that diameter is 0.1mm to 2mm.In an embodiment party In case, nose stomach setting element is the cylindrical body that diameter is 0.1mm to 1mm.

In one embodiment, nose stomach setting element is 0.1mm to 6mm long.In one embodiment, nose stomach positions Element is 0.2mm to 4mm long.In one embodiment, nose stomach setting element is 0.4mm to 3mm long.In an embodiment In, nose stomach setting element is 0.5mm to 2mm long.

In another embodiment, nose stomach setting element offer can be by the magnetic signal of at least one magnetometer measures. In another embodiment, nose stomach setting element is activated by magnetic signal.In another embodiment, magnetometer measures nose stomach Then the three-dimensional magnetic field of setting element may be used to provide Three-Dimensional Magnetic influence value.

In another embodiment, nose stomach setting element is connected in electromagnetic tracking system or in electromagnetic tracking system Component.In another embodiment, electromagnetic tracking system includes: that field generator, sensor unit and center control are single Member.In another embodiment, electromagnetic tracking system includes: field generator comprising coil is to generate for establishing coordinate The change in location magnetic field in space.In another embodiment, nose stomach setting element includes coil, is felt in coil via magnetic field Answer electric current.In another embodiment, central control unit is for controlling field generator and capturing from sensor unit Data.

In another embodiment, field generator generates the electromagnetic field as coordinate system --- it works in reference field One group of wired sensor coil.In another embodiment, at each point in reference field, coil (such as pickup wire Enclose) field intensity and directed information are sent back by signal wire.In another embodiment, the information is for determining in this Cell winding/NGT/ nose stomach setting element position and posture.

In another embodiment, it is small in the coil of also referred to as nose stomach setting element used herein --- example Such as, NDI Aurora coil.In another embodiment, the tracking of NGT is radio tracking, wherein signal coil it is sufficiently small with (such as Calypso product) is implanted in the peripheral cavity of NGT.

In another embodiment, coil array, by changing the magnetic field in swept volume come induced current.Another In one embodiment, system as described herein is based on Faraday's law.In another embodiment, the variation in magnetic field Cause to really feel the potential difference answered in coil.In another embodiment, measurable electric current should be gone out in coil inner sense.Another In a embodiment, turn of area, the number of turns on coil and magnetic flux that the size and coil of the voltage from coil are surrounded Throw-over rate is proportional.

In another embodiment, nose stomach setting element offer can be superimposed upon uniform magnetic by means of gradient coil system Magnetic gradient field on field.In another embodiment, RF transmitter generates the magnetic field RF in a pulsed fashion in test zone.Another In one embodiment, RF transmitter generates the magnetic field RF in a pulsed fashion in esophagus and/or neck area.In another implementation In scheme, generated MR signal is detected by receiving coil combination receiving device, and the nuclear magnetisation in test zone is distributed base It is reconstructed in digitized MR signal, and nuclear magnetisation distribution is shown on the display unit as MR image.

In another embodiment, nose stomach setting element is built-in coil or micro-coil in intracavitary or cavity wall.? In another embodiment, receiving device is applied to by nose stomach setting element received signal to be digitized and to be used for It determines the position of setting element and is superimposed on MR image shown on the display unit.

In another embodiment, coil control unit magnetic moment of control coil when it does not switch to reception pattern It adjusts.

In some embodiments, nose stomach setting element receives electric current via current feed.In another embodiment, Nose stomach setting element is arranged in chamber.In another embodiment, nose stomach setting element is arranged in the chamber of not suction ports In.In another embodiment, draught line is connected for changing position of the nose stomach setting element relative to magnetic direction.

In another embodiment, the NGT of the utility model provides permanently depositing for the nose stomach setting element in NGT NGT or part thereof of position can be monitored at any time.

In another embodiment, a pair of of compliant conductive lead is embedded in cavity wall and/or is placed on and is intracavitary.Another In one embodiment, the band of radiopaque material is embedded in cavity wall and/or is placed on intracavitary.In another embodiment party In case, alternatively, being designed to multiple check valves of the reflux of fluid is prevented to be placed on intracavitary.

In another embodiment, NGT as described herein includes at least two vacuum chamber and receiving nose stomach setting element At least one other chamber.In another embodiment, NGT as described herein includes at least three peripheral cavity, wherein extremely Few 3 peripheral cavities include 2 vacuum chambers and the other chamber for accommodating nose stomach setting element.In another embodiment, such as this The NGT of text description is the 7 chamber extrusion portions with the dedicated chamber for nose stomach setting element.In another embodiment, nose stomach Setting element is pre-assembled, and is then introduced into chamber.In another embodiment, NGT be with silk (it is intracavitary and/ Or insertion chamber (any chamber) wall in) coextrusion product, and then at tip assemble nose stomach setting element.In another reality It applies in scheme, nose stomach setting element is located at the distal tip of NGT.In another embodiment, nose stomach setting element is located at Distal end along NGT is to any position of proximal end.In another embodiment, nose stomach setting element is configured to die Needle.In another embodiment, nose stomach setting element is coil.

In another embodiment, there is provided herein a kind of system, the system be used in the patient for needing it insertion, Positioning and/or manipulation NGT, wherein the system includes the system unit of NGT as described herein and the position for monitoring NGT. In another embodiment, the outside for being placed on the body of patient for monitoring the system unit of the position of NGT.At another In embodiment, the system unit of the position for monitoring NGT includes: computerized processor；It is operably coupled to processing The display equipment of device；Detector device is operably coupled to processor, which is configured to be located in subject Predetermined position above；Coil is operably coupled to processor, which is configured for insertion into NGT；Equipment is stored, It is stored: (a) representing the first preset lines of the intermediate sagittal line of subject；(b) thorax anatomies are represented, such as, but not limited to Second preset lines of the diaphragm of subject；And (c) instruct, when being executed by a processor, make processor and display equipment, inspection Device equipment, coil and storage equipment cooperation are surveyed, while coil is advancing or removes from NGT: (a) display represents tested The preset lines of first preset lines of the intermediate sagittal line of person and the diaphragm for representing subject；(b) it for esophagus section, determines and shows Indicate the first number of the first distance from coil to detector device.

In another embodiment, the system unit of the position for monitoring NGT includes: computerized processor；It can It is operably connected to the display equipment of processor；Detector device is operably coupled to processor, the detector device structure It causes to be located in above the predetermined position of subject；Coil, is operably coupled to processor, coil be configured for insertion into In NGT；Equipment is stored, storage: (a) represents the first preset lines of the intermediate sagittal line of subject；(b) chest dissection knot is represented Structure, such as, but not limited to the second preset lines of the diaphragm of subject；And (c) instruct, make to handle when executed by the processor Device and display equipment, detector device, coil and storage equipment cooperation, while coil is advancing or removes from NGT: (a) display represents the first preset lines of the intermediate sagittal line of subject and represents the second preset lines of the diaphragm of subject；(b) right In esophagus section, determines and show the first number for indicating the first distance from coil to detector device；And (c) for stomach section Section determines and shows the second number for indicating the second distance from coil to detector device.

In another embodiment, the system unit of the position for monitoring NGT includes: computerized processor；It can It is operably connected to the display equipment of processor；Detector device is operably coupled to processor, the detector device structure It causes to be located in above the predetermined position of subject；Coil, is operably coupled to processor, coil be configured for insertion into In NGT；Equipment is stored, storage: (a) represents the first preset lines of the intermediate sagittal line of subject；(b) chest dissection knot is represented Structure, such as, but not limited to the second preset lines of the diaphragm of subject；And (c) instruct, when being executed by a processor, make to handle Device and display equipment, detector device, coil and storage equipment cooperation, while coil is advancing or removes from NGT: (a) display represents the first preset lines of the intermediate sagittal line of subject and represents the second preset lines of the diaphragm of subject；(b) right In esophagus section, determines and show the first number for indicating the first distance from coil to detector device；(c) for stomach section, really Determine and shows the second number for indicating the second distance from coil to detector device；And (d) for pylorus section, determine and The third number of third distance of the display instruction from coil to detector device；(e) it for duodenum section, determines and shows and refer to Show the 4th number of the 4th distance from coil to detector device.

In another embodiment, when being executed by a processor, the instruction make processor and detector device, coil with And storage equipment cooperation records the route across subject's body while coil is advancing or removes from NGT.Another In one embodiment, which includes X-Y location.In another embodiment, the first preset lines and the second preset lines exist It represents and intersects at the point of the xiphisternum knot of subject.In another embodiment, coil is configured to transmission of electromagnetic signals.? In another embodiment, the system unit of the position for monitoring NGT includes having to be connected to the more of overhang part A silk, multiple silk are at least one of stylet and seal wire.In another embodiment, detector device includes from line Circle receives multiple receiving coils of electromagnetic signal.In another embodiment, when being executed by a processor, which makes to handle Device and display equipment, detector device, coil and storage equipment cooperation, while coil is advancing or removes from NGT, Generate and show the arrow of the direction of travel of instruction coil.In another embodiment, when being executed by a processor, should Instruction makes processor and display equipment, detector device, coil and storage equipment cooperation, is advancing in coil or from NGT While removal, for jejunal segment, determines and show the 5th number for indicating the 5th distance from coil to detector device.

In another embodiment, nose catheter includes with the end sections for being connected to nose stomach or enteral setting element Silk, the silk are at least one of stylet, seal wire, or both.In another embodiment, nose catheter includes having connection To multiple silks of the end sections of nose stomach or enteral setting element, multiple silk is at least one of stylet, seal wire or two Person.

It is as follows to be described more fully, in some embodiments, nose stomach setting element, aspirating mechanism stomach function regulating Mechanism of decompressor setting is in (being located at) one or more identical chambers and associated by one or more identical chambers.At it In its embodiment, nose stomach setting element, aspirating mechanism and the stomach mechanism of decompressor are configured to run by independent chamber.

According to some embodiments, NGT is made of at least one main chamber and multiple peripheral cavities, wherein the multiple peripheral cavity A part include at least one stomach decompression port, and a part of the multiple peripheral cavity includes at least one aspiration end Mouthful, at least one suction ports be configured to hermetically to attract the inner wall of esophagus and its against.

According to other embodiments, NGT is depressurized by least one main chamber including nose stomach setting element and at least one stomach One or more chambers of port, and one or more peripheral cavity compositions, which includes at least one pumping Inhale port, at least one suction ports be configured to hermetically to attract the inner wall of esophagus and its against.

In addition, the structure of the NGT of some embodiments according to the present utility model makes it possible to locally determine in esophagus The selectivity of position vacuum applies.Therefore, the position for being connected to pipe of esophagus can change in time, to reduce to esophagus Tissue damage.

According to some embodiments, peripheral (vacuum) chamber is configured to that fluid, such as gastric reflux are sucked out from esophagus, and/or holds Receive nose stomach setting element.In some embodiments, at least one described suction ports are configured to that fluid is sucked out from esophagus.Pass through Vacuum applied to the peripheral cavity of NGT described herein, at least one suction ports for hermetically attract the inner wall of esophagus with It is against and interchangeably or being simultaneously sucked out fluid from esophagus.Those skilled in the art will determine wait apply well The vacuum pressure for being used to seal esophagus and/or fluid is sucked out from esophagus added.

NGT according to the present utility model can be used for ICU or other places, to reduce complication relevant to flowing back, Such as the risk of VAP, and to prevent or reduce tissue damage.

According to the utility model, the inner wall of esophagus is attracted by negative pressure (vacuum) toward and against the outer profile of NGT.Even The vacuum control unit for being connected to hospital vacuum unit or any other vacuum unit can be in one or more pump units of NGT It is middle to realize synchronous vacuum pressure or vacuum pressure be changed between different pump units.In this way, originally The NGT of utility model prevents substance or liquid reflux and is drawn onto the lung of patient and prevents tissue damage, while avoiding from trouble The esophagus of person removes and the needs of replacement whole equipment.

In some embodiments, pipe according to the present utility model can be other in gastrointestinal tract or any other body cavity It is used in position, such as artery, vein etc..However, simple in order to discuss, which is referred to as NGT throughout the specification.

Referring now to Fig. 1 and Fig. 2, nose catheter 10, the non-limiting implementation according to the present utility model of nose catheter 10 are shown Scheme constructs and is operable.

NGT 10 includes main (in general, but being not necessarily center) chamber 12.Main chamber 12 can be used for being fed with and giving drug and Other oral agents, and can be also used for from stomach aspiration fluid.Therefore, as it is known in the art, main chamber 12 can be two-chamber, One chamber is for being fed with, and another chamber is for aspirating and (not obscuring with the vacuum chamber being subsequently noted).Main chamber 12 is provided with one Or multiple proximal connectors appropriate 14, for being connected to the substance source for being fed with or giving, and it is alternatively coupled to press Power source (for example, suction), as known in the art.

NGT 10 includes the one or more vacuum chambers 16 for peripherally surrounding main chamber 12.In the specification and in the claims The term " peripherally surrounding " used surrounds (very close to each other between a vacuum chamber or continuous peripheral vacuum comprising continuous Chamber) and discontinuous encirclement (wherein, there is interval between discrete vacuum chamber).An embodiment shown in figure 2 In, there are four vacuum chambers 16 being peripherally spaced around main chamber 12；The utility model is not limited to the quantity of the vacuum chamber. Vacuum chamber 16 equally or unequally spaced can be separated from each other.What therefore main chamber 12 and vacuum chamber 16 were arranged as being disposed concentrically upon Pipeline.Vacuum chamber 16 for example couples via the pressure regulator 20 and valve 22 that form vacuum control unit with vacuum source 18.

Main chamber 12 can be constructed by any suitable biocompatible materials, such as, but not limited to polyurethane, silicone, poly- Vinyl chloride and many other materials.Vacuum chamber 16 can be constructed by similar material, but optionally can be by medically pacifying Full metal constructs, such as, but not limited to stainless steel, titanium alloy, Nitinol etc..In general, and without limitation, main chamber 12 can be with With the length within the scope of 50cm to 150cm, wherein outer diameter is in the range of 5-12Fr.

Main chamber 12 and vacuum chamber 16 are it is so structured that a unit.Optionally, vacuum chamber 16 can form individual unit, The individual unit slides above main chamber 12 after main chamber 12 is inserted into patient body.As another optinal plan, vacuum Chamber 16 can be initially introduced patient's body, and main chamber 12 can be slided between vacuum chamber 16.

With reference to Fig. 1, vacuum chamber 16 may include vacuum seal 24, may include one or more suction ports 26 With possible nose stomach setting element.As illustrated in fig. 1, some vacuum chambers 16 can have more takes out than other vacuum chambers Inhale port.As being shown in FIG. 3, when applying the vacuum generated by vacuum source 18, the inner wall of esophagus is by negative pressure towards simultaneously It is attracted against suction ports 26 (outer profile of NGT 10).The outer profile of NGT 10 at least at vacuum seal 24 is excellent Selection of land is round (round or ellipse), to conform better to esophagus and seal esophagus.In one embodiment, vacuum sealing Limit at least 60% channel across esophagus.

Pressure regulator 20 can be used for reducing or adjusting in other ways the negative pressure generated by vacuum source 18.For example, pressure Draught control mechanism 20 can be used for the vacuum level generated as vacuum source 18 being matched to vacuum needed for vacuum seal 24 It is horizontal.Such vacuum pressure can for example between 0.5mmHg-50mmHg, between 50mmHg-100mmHg, Between 100mmHg-200mmHg, between 200mmHg-300mmHg, between 300mmHg-400mmHg, in 400mmHg- Between 500mmHg, between 500mmHg-600mmHg or between 600mmHg-760mmHg.Different vacuum pressure values can be with It is suitable for different patient and/or is suitable for the pipe different cavity configuration inserted therein of the utility model.In addition, vacuum chamber 16 include stomach decompression port, be will be described in greater detail hereinafter.In some embodiments, including stomach decompression port 23 Vacuum chamber 16 further include one or more suction ports 26, or optionally without suction ports 26.Applying by vacuum source When the vacuum of 18 generations, the abdomen (such as stomach and/or intestines) of subject is depressurized to remove stomach Qi body, excessive reflux etc..Pressure Draught control mechanism 20 can apply stomach decompression needed for vacuum pressure, such as between 0.5mmHg-50mmHg, in 50mmHg- Between 100mmHg, between 100mmHg-200mmHg, between 200mmHg-300mmHg, 300mmHg-400mmHg it Between, between 400mmHg-500mmHg, between 500mmHg-600mmHg or between 600mmHg-760mmHg.This field It will be recognized that the excess reflux that required vacuum pressure can depend on the amount of gas and/or just be decomposed, and It is that vacuum pressure is applied with constant manner or pulse mode.The changeability of the vacuum pressure applied can be supplied to by valve 22 Vacuum chamber 16 including decompression port 23.Valve 22 can be used for changing vacuum between different vacuum chambers 16, so that vacuum is close Envelope part 24 in suction level be not over time it is constant, this can provide how esophageal wall is sucked and is continued more The changeability of aspect for a long time.

The vacuum seal 24 and suction ports 26 of different number, and adjustable sealing can be set in NGT 10 The vacuum of part 24, to generate the vermicular movement or other oscillating movements of esophagus.

Embodiment according to the present utility model is provided with one or more auxiliary in the proximal end of vacuum seal 24 and takes out Inhale port 33.Vacuum sealing is likely to accumulate in since vacuum seal 24 seals esophagus, any oropharyngeal secretions, such as saliva 24 top (that is, in nearside of vacuum seal 24) of part.As auxiliary suction port 33 can be used for aspirating and removing Secretion.Additionally or alternatively, one or more vacuum chambers 16 can be used for emptying the liquid from patient's stomach.That is, such as Fruit is flowed back, then one or more vacuum chambers 16 can be extracted out by decompression port 23 and/or suction ports 26 towards valve 22 At least part flows back.There, gastric content may collect in suitable reservoir, and then discard.

Vacuum source 18 is preferably inserted into NGT 10 and is activated after being located in esophagus, is prevented or minimum with will pass through Change the reflux food being drawn into lung and liquid to reduce the risk of VAP or other bacterium infections.

A method of using the NGT of the utility model comprising following steps, but without limitation and not necessarily with successive Sequence:

A) NGT is introduced in the esophagus of subject；

B) scene positioning and/or placement NGT；

C) one or more of vacuum seal is applied vacuum to；

D) adjust vacuum level (this can be completed before step a)；

E) after realizing required sealing of the esophageal wall to NGT 10, manually or automatically change true between vacuum chamber 16 Empty interval time, so that NGT keeps complete to esophagus；And

(f) manually or automatically apply vacuum to the one or more vacuum chambers 16 for including decompression port 23.

Referring now to Fig. 4 A, Fig. 4 B and Fig. 4 C.Fig. 4 A is another non-limiting embodiment party according to the present utility model The rough schematic view of the transparent front view of a part that is case construction and being operable nose catheter 50；Fig. 4 B is along Fig. 4 A The rough schematic view of the cross section of the line I-I of nose catheter 50.Fig. 4 C is the cross section of the line II-II of the nose catheter 50 along Fig. 4 A Rough schematic view.Nose catheter 50 is approximately similar to the nose catheter 10 of Fig. 1.Difference between nose catheter 10 and nose catheter 50 is below Detailed description.Fig. 4 A shows the proximal end for being inserted into the nose catheter 50 of the insertion of the esophagus into the esophagus of patient and relative to patient Part.Nose catheter 50 includes unshowned other upper part, stays outside the patient's body and couple such as vacuum source 18, pressure Draught control mechanism 20 or valve 22.Nose catheter 50 include main chamber 12 and six vacuum chambers 16, be embodied as 16a, 16b, 16c, 16d, 16e and 16f.However, (not shown) in other embodiments, can be used different number, for example, four or more Vacuum chamber.Nose catheter 50 further includes the decompression port 23 in the distal side of the lengthwise position positioned at suction ports 26b and 26f, such as Fig. 4 A Shown in.In some embodiments, decompression port 23 is configured to be located in stomach or duodenum.

Each vacuum chamber 16 include suction ports 26, be correspondingly embodied as 26a, 26b, 26c, 26d, 26e and 26f.Therefore, each of suction ports 26 are associated with one in chamber 16.Suction ports 26a, 26b, 26c, 26d, 26e And 26f is distributed along the longitudinal axis of nose catheter 50.Suction ports 26a, 26c and 26e along nose catheter 50 longitudinal axis simultaneously Body relative to patient is located at suction ports 26b, 26d and the top of 26f.Such longitudinal axis may be advantageously located at In main chamber 12.

Suction ports 26a, 26c and the cross section of 26e are shown with specific reference to Fig. 4 B and 4C, Fig. 4 B.Suction ports 26a, 26c and 26e is at relative to the identical lengthwise position of main chamber 12 (that is, along longitudinal axis of nose catheter 50) around 12 periphery of main chamber Ground distribution.Fig. 4 C shows suction ports 26b, 26d and the cross section of 26f.Suction ports 26b, 26d and 26f are relative to master Chamber 12 is peripherally distributed in identical lengthwise position around main chamber 12, as shown in Figure 4 A.Suction ports 26a, 26c and 26e's Lengthwise position is different from the lengthwise position of suction ports 26b, 26d and 26f and is located at suction ports 26b, 26d and 26f Above lengthwise position, as shown in Figure 4 A.In general, but without limitation, suction ports 26a, 26c and 26e and 26b, 26d and 26f it Between distance in the range of 50mm to 250mm or 100mm to 150mm.

Thus, for example, applying vacuum to vacuum chamber 16a or 16c or 16e or any combination thereof allows in different peripheral positions It sets (that is, depending on used vacuum chamber) and is only existed with different levels (that is, depending on that how many a vacuum chambers used) Specific lengthwise position (by the line I-I expression relative to the nose catheter 50 in Fig. 4 A) seals esophagus against nose catheter 50.In order to The maximum sealing for allowing esophagus, can apply vacuum to vacuum chamber 16a, 16c and 16e simultaneously together.To vacuum chamber 16b or 16d or 16f or combinations thereof, which apply vacuum, will correspondingly generate identical vacuum, only in the peripheral position of difference relative to main chamber 12 (that is, according to peripheral position of vacuum chamber 16b, 16d or 16f) is set, and particularly, along by the line II-II expression in Fig. 4 A The different longitudinal position of nose catheter 50.Vacuum can also be applied to the vacuum for being located at different longitudinal position along nose catheter 50 simultaneously Chamber.

Therefore, the position of the vacuum chamber in nose catheter according to the present utility model determines the peripheral position of applied vacuum It sets, and the position of suction ports determines the lengthwise position of the vacuum applied in esophagus.It should be noted that being also considered as such as by curing mainly What nursing staff executed is located in nose catheter 50 in esophagus.The vacuum permission for switching application between vacuum chamber exists in the meantime Vacuum peripherally and is longitudinally applied on esophagus inner wall at different location, to reduce or prevent to towards suction ports The damage of esophageal tissue.

Valve 22 can be used for switching vacuum between one or more vacuum chambers 16.Valve 22 can be separately connected to each A vacuum chamber 16, such as be connected to together at identical lengthwise position with suction ports 26 relative to nose catheter 50 All vacuum chambers 16.Obviously, the latter arrangement of valve 22 allows the relatively lower-mobility switched between vacuum chamber 16.Therefore, valve 22 can be used for after one section of duration, by the vacuum of application from positioned at specific periphery and one at lengthwise position Or multiple vacuum chambers are switched to positioned at other peripheral positions or the one or more vacuum being additionally located at other lengthwise positions Chamber.Such switching can be executed gradually, to keep esophagus against nose catheter 50 at least to a certain degree during switching On sealed.

Nose catheter 50 may include two or more vacuum chambers 16 for peripherally surrounding main chamber 12.In vacuum ports 26 At least two are located at along the different longitudinal position of nose catheter 50, to allow the lengthwise position in esophagus to switch.

Suction ports 26 are ellipses but it is also possible to be any other shape, such as circle.Suction ports 26 can wrap The edge 28 for including gradual change prevents or reduces the damage to esophageal tissue when being pressed in suction ports 26 with the inner wall when esophagus.Gradually The edge 28 of change is advantageously with obtuse angle gradual change.The edge 28 of gradual change can be complete gradual change or only include gradual change part. In general, the edge 28 of gradual change can provide recessed shape for each suction ports 26, which has approximation wherein Between opening.

Nose catheter 50 can couple with manifold (not shown).Vacuum chamber 16 can be connected to valve in an individual manner by manifold 22, to allow vacuum to be applied to one or more vacuum chambers 16.Manifold can be it is transparent, visually to monitor stomach substance, For example, the reflux of bile.

In some embodiments, at least one suction ports 26 may include one of the longitudinal axis along nose catheter 50 Divide two or more suction ports continuously arranged.

Referring now to Fig. 7 A and Fig. 7 B.Fig. 7 A shows non-limiting embodiments according to the present utility model and constructs and can grasp The rough schematic view of a part of the NGT 10 of work.Fig. 7 B be include one or more stomach decompression ports NGT distal portions Simplification and amplification figure.NGT 10 includes such as vacuum seal 24, and vacuum seal 24 includes being dispensed along NGT Two suction ports 28 and 26 between two different locations of 10 length.NGT 10 further includes being arranged in vacuum seal One or more stomach the decompression port 23a and 23b in 24 distal sides.In general, one or more stomach decompression port 23a and 23b are configured to It is located in stomach and/or proximal end duodenum.

In general, but without limitation, the distance between one or more stomach decompression ports 23 and at least one suction ports exist In the range of 50mm to 200mm.

The one or more stomach decompression port 23 is associated at least one of 16 (not shown) of vacuum chamber.In some realities It applies in scheme, the one or more stomach decompression port 23 is associated with including one or more vacuum chambers 16 of suction ports 26. In other embodiments, the one or more stomach decompression port 23 vacuum chamber 16 other at least one be not (for example, have The vacuum chamber 16 of suction ports 26) it is associated.Stomach decompression port 23 can be configured to be located in stomach.In another embodiment In, stomach decompression port 23 can be configured to be located in the duodenum of proximal end.In some embodiments, stomach decompression port 23 is set It sets in the distal end of vacuum seal 24 (and suction ports 28 and 26).Decompression port 23 can be ellipse or any other Form, for example, it is round.

NGT 10 further includes in one or more feeding ports 25 of the far-end of main chamber 12.In other embodiments In, such as being fed with and depressurizing simultaneously, one or more feeding ports 25 are in the distal side of one or more stomach decompression ports 23. Feeding port 25 can be configured to positioning under one's belt or in duodenum.In general, but without limitation, one or more stomach decompression ports 23 are fed with the distance between port in the range of 50mm to 300mm at least one, or in the range of 100mm to 200mm.

In one embodiment, one or more stomach decompression ports 23 are configured to be located in selected from distal esophageal (that is, true The distal side of empty hermetic unit 24), in stomach, in the position of proximal end duodenum or combinations thereof.Stomach decompression port 23 constructs wherein At in the embodiment being located in the duodenum of proximal end, feeding port 25 can be configured to be located in distal duodenum.

Vacuum chamber 16 including decompression port 23 can be by the material structure similar with including the vacuum chamber 16 of suction ports 26 It makes, but optionally structure can be come by medically safe metal, such as, but not limited to stainless steel, titanium alloy, Nitinol etc. It makes.

As known to persons skilled in the art, system described herein further includes for NGT to be inserted into subject Guiding probe (for example, stylet).The guiding probe is usually removed after the correct placement of confirmation NGT.

A method of using the NGT 50 of the utility model, may comprise steps of, but without limitation and it is different Determine in a subsequent order:

A) NGT is introduced in the esophagus of patient；

B) one or more decompression ports are applied vacuum to；And

C) the one or more suction ports being interchangeably applied to vacuum between the suction ports of different positioning, with Just every time the different location along esophagus hermetically attract esophagus inner wall and its against.

Vacuum can be applied to in due course interval including one or more decompression end in a constant manner or optionally The vacuum chamber of mouth.Therefore, decompression port can be applied before, during or after patient is by NGT described herein feeding true It is empty.In a further embodiment, it can be required according to subject, such as lead to abdominal discomfort, it is including but not limited to excessive Stomach Qi etc. applies vacuum to decompression port.

Vacuum can be applied to one or more vacuum chambers every time, and be applied to such vacuum chamber every time, that is, packet Include the suction ports that are peripherally distributed of same position around the longitudinal axis along NGT vacuum chamber (for example, Fig. 4 A, Fig. 4 B with And the vacuum chamber 16a and 16c or vacuum chamber 16b, 16d and 16f of Fig. 4 C), or include around along NGT longitudinal axis not With the vacuum chamber (for example, vacuum chamber 16a and 16d of Fig. 4 A, 4B and 4C) for the suction ports that position is peripherally distributed.

Vacuum is applied to the exchange between its vacuum chamber and can carry out in various ways, for example, it can be for each Patient execute it is one or many, and each change in location can be executed with constant or variable time section it is primary, it is all these all Judgement according to care-giver to particular patient.

This method can also include the steps that adjusting vacuum, so that suction level is not over time in suction ports Constant.Vacuum can be adjusted vacuum ports, to generate the vermicular movement or other oscillating movements of esophagus.

In some embodiments, vacuum can be applied so as to limit across at least 60% channel of esophagus.

This method further includes the steps that visually monitoring transparent manifold, which is linked together vacuum chamber and valve Reflux for stomach substance such as bile.

In some embodiments of the utility model, the utility model may be used to nose stomach setting element across main chamber 12, patient's body is inserted into across one or more vacuum chambers 16 and/or across different dedicated chamber (not shown).This nose stomach Setting element or probe may include for example: temperature sensor, electromagnetic radiation sensor, pH sensor, imaging sensor, light Fibre, ultrasonic probe, OCT (optical coherence tomography) probe, miniature MRI (magnetic resonance imaging) probe etc..

Referring now to Figure 6, it shows the nose catheter for being optionally similar to pipe 10 (Fig. 1-2) and/or pipe 50 (Fig. 4 A-4C) 200 cross section.To simplify the explanation, cross section is shown at the part without any suction ports of pipe.

Pipe 200 may include the one or more radiopaque bands being arranged along the longitudinal axis of pipe, such as band 202- 212.When pipe 200 (or part of it) is in patient's body, it is imaged using x-ray imaging and/or other types of electromagnetic radiation, Radiopaque band 202-212 may be visible.That is, radiopaque band 202-212 is by inhibiting some or all of electromagnetism spokes Penetrate by radiopaque material be made, thus relative to Medical Devices more radiolucent bodily tissues and/or Radiolucent part generates contrast.In general, if there is two or more parallel longitudinal radiopaque bands, then The preferable depth perception of pipe may be implemented in obtained electromagnetic radiation image.This is because one or more bands can be than it Its one or more band is further from imager.In addition, parallel with two or more, longitudinal radiopaque band can It enables to show the case where pipe is twisted；This will lead to the helical form image of band.

The example of suitable radiopaque material is barium sulfate, but those skilled in the art will appreciate that it can be used Its known radiopaque material.Using barium sulfate, the density in band 202-212 can for example exist Between 40%-60%, it is between 60%-80% or higher.Remaining percentage can be one or more filler materials.

Either due to the barium sulfate content and/or their thickness of their high percentage, band 202-212 can be assigned Give the certain rigidity of pipe 200.The rigidity helps nursing staff by pipe along gastrointestinal tract (or any other body to a certain extent Chamber) it pushes, but still manipulate across relevant body cavity with allowing tubular elastic.

Optionally, one or more of band 202-212 can have substantially triangular cross section, such as in figure It shows.One vertex of triangle can be with the inside of point tube, and the base portion opposite with the vertex can be with the outer of point tube Portion.In other embodiment (not shown), one or more bands can have rectangular cross section, circular cross section or other The cross section of shape.

Band 202-212 is optionally at least partially embedded in the outer wall of pipe 200.Optionally in addition, band 202-212 The outer surface of pipe can slightly be protruded past.For example, protruding portion can for 50 microns -100 microns, 100 microns -150 microns, 150 microns -250 microns, 250 microns -400 microns or more.The protruding portion can make care-giver keep pipe 200 with preferably Pipe is caught, especially when pipe must rotate.The protruding portion can prevent pipe from sliding in the hand of care-giver when rotated.

In another embodiment, NGT includes at least one nose stomach setting element.In another embodiment, NGT Including at least one the nose stomach setting element being located in peripheral cavity, which is vacuum chamber.In another embodiment, NGT includes at least one nose stomach setting element in peripheral cavity, which is not vacuum chamber.In another embodiment In, NGT includes at least one nose stomach setting element in peripheral cavity, wherein accommodating the peripheral cavity of nose stomach setting element at it It is sealed at proximal end.In another embodiment, NGT includes at least one nose stomach positioning member in peripheral cavity Part, wherein the peripheral cavity for accommodating nose stomach setting element is sealed at its distal end.In another embodiment, NGT packet Include at least one the nose stomach setting element being located in peripheral cavity, wherein accommodate the peripheral cavity of nose stomach setting element in proximal end and It is sealed at distal end.In some embodiments, main chamber includes at the distal end of the nose catheter or neighbour At least one feeding port of the distal end of the nearly nose catheter, at least one nose stomach setting element or combinations thereof.Some In embodiment, main chamber include at the distal end of the nose catheter or the distal end of the neighbouring nose catheter extremely A few feeding port.

Referring now to Fig. 8 A-8B, shows and be located at and (surround main chamber 304) in peripheral cavity 303 and possibly from NGT 300 Nose stomach setting element 301 outstanding.Peripheral cavity 303 in Fig. 8 A-8B does not have suction ports and its wall is continuous.Peripheral cavity 303 end (Fig. 8 A) can be sealed at its proximal end, or (Fig. 8 B) is sealed at its distal end.Pass through the close of cup 302 Envelope is that nose stomach setting element 301 provides physical protection.Silk 305 is connected to nose stomach setting element 301.

" distal end of the neighbouring nose catheter " used herein is that the distal end of nose catheter described in span is most 10cm, most 9cm, most 8cm, most 7cm, most 6cm, most 5cm, most 4cm, most 3cm, most 2cm, most 1cm, Most 0.75cm, most 0.5cm, most 0.25cm.Each possibility is the individual embodiment of the utility model.

Those skilled in the art will recognize that the utility model is not limited to the content hereinbefore having had been particularly shown and described. But the scope of the utility model includes that the combination of above-described feature and sub-portfolio and those skilled in the art exist Read it is previously mentioned after expect and not modifications and variations of above-described feature in the prior art.

Claims

1. a kind of enteral feeding pipe characterized by comprising

Main chamber has the one or more proximal connectors for being configured to connect to substance source or pressure source；

One or more vacuum chambers, peripherally surround main chamber, wherein the vacuum chamber includes vacuum seal, it is described Vacuum seal includes one or more suction ports；And

At least one nose stomach setting element, wherein at least one described nose stomach setting element is configured to transmission of electromagnetic signals, or Wherein, at least one described nose stomach setting element is structured to receive multiple receiving coils of electromagnetic signal.

2. enteral feeding pipe according to claim 1, which is characterized in that the enteral feeding pipe further includes at least one stomach Decompression port.

3. enteral feeding pipe according to claim 1, which is characterized in that at least one described nose stomach setting element is included in In the peripheral cavity of the enteral feeding pipe.

4. enteral feeding pipe according to claim 1, which is characterized in that at least one described nose stomach setting element is included in The wall of vacuum chamber, main chamber wall or combinations thereof in.

5. the feeding of enteral described in any one of -4 pipe according to claim 1, which is characterized in that the enteral feeding pipe also wraps Include two or more longitudinal radiopaque bands.

6. enteral feeding pipe according to claim 5, which is characterized in that the two or more longitudinal radiopaques Band be embedded in the outer wall of enteral feeding pipe.

7. the feeding of enteral described in any one of -4,6 pipe according to claim 1, which is characterized in that at least one described nose stomach Setting element is electromagnet.

8. enteral feeding pipe according to claim 5, which is characterized in that at least one described nose stomach setting element is electromagnetism Body.

9. enteral feeding pipe according to claim 1, which is characterized in that one or more of suction ports are configured to use In hermetically attract esophagus inner wall and its against.

10. a kind of enteral is fed with system, which is characterized in that be fed with including enteral according to claim 1 to 9 Pipe and feeding source, suction source or combinations thereof.

11. system according to claim 10, which is characterized in that the system also includes: (a) computerized processor, (b) it shows equipment, is operably coupled to the processor；(c) detector device is operably coupled to the processing Device, the detector device are configured to above the predetermined position for being located in subject；(d) equipment is stored, storage: is represented tested First preset lines of the intermediate sagittal line of person；Represent the second preset lines of scheduled thorax anatomies；And instruction, when by institute When stating processor and executing described instruction, make the processor and the display equipment, the detector device, it is described at least one Nose stomach setting element and the storage equipment cooperation, so that (i) display represents described the first of the intermediate sagittal line of subject Preset lines, (ii) display represent second preset lines of the scheduled thorax anatomies of subject.

12. system according to claim 11, which is characterized in that described when executing described instruction by the processor Instruction closes the processor and the detector device, at least one described nose stomach setting element and the storage equipment Make, at least one described nose stomach setting element advancing or from the enteral feeding pipe remove while, record across by The route of the body of examination person.

13. system according to claim 12, which is characterized in that the route includes X-Y location.

14. system according to claim 11, which is characterized in that first preset lines and second preset lines are in generation Intersect at the point of the xiphisternum knot of table subject.

15. system according to claim 11, which is characterized in that described when executing described instruction by the processor Instruction makes the processor and the display equipment, the detector device, at least one described nose stomach setting element and institute Storage equipment cooperation is stated, is advancing or is being removed from enteral feeding pipe same at least one described nose stomach setting element When, it generates and shows the arrow for indicating the direction of travel of at least one nose stomach setting element.