CN1225026A - Medical tube for insertion and detection within the body of a patient - Google Patents

Abstract

There is disclosed a medical tube for insertion into the body of a patient. The medical tube includes a tube or device suitable for insertion into the patient's body, and a permanent magnet associated therewith. The magnet may be solid or non-solid, and may be rigid or non-rigid. In one embodiment, the magnet is hollow and associated with the medical tube such that the tube may be used for its intended purposes. In another embodiment, the magnet is solid and, after insertion into the body of the patient, is displaced such that it does not interfere with the intended use of the medical tube. In a further embodiment, the magnet is removable after placement of the medical tube.

Description

Be used for inserting and detecting the intravital medical tube of patient

This invention is usually directed to a kind of medical tube that is used to insert in patient's body and detects patient's health.

It is important aspect the clinical medicine of the position of medical tube a lot of examples being arranged in detecting patient's body.For example, when mouth that passes the patient or nose placement carrier pipe, the end of carrier pipe must enter patient's stomach, can not curl and stay in the esophagus.For example, if the end of carrier pipe is positioned in the trachea mistakenly rather than in the stomach, the solution that will carry sucks the situation of patient's pulmonary.

Except carrier pipe, various requirement is positioned at the intravital medical tube of patient exactly, comprise the convergent divergent channel of widening esophageal stricture, be used to measure the pipe of pressure wave in the harmonization of the stomach esophagus of suspecting the patient that the esophagus motor disorders is arranged, the sengstaken-Blakemore tube that control is bled from the varicosis blood vessel of esophagus in patient's harmonization of the stomach esophagus, colonic the patient helps to alleviate the colonic decompression pipe of ectocolon by gas, bladder the patient, urinary system in ureter or the kidney (urologic) pipe, and at patient's heart or Pulmonic vascular conduit.In fact, in any insertion patient body (via mouth, anus, urethra, or the like), or the vertical catheter that has of (for example (stent) stretched in an exhibition) requires location exactly usually between any two tissues of human body.

At present, the position of medical tube uses the imaging device as breast or abdominal part X ray to detect termly in patient's body.Yet such program requires to carry the patient to X-ray equipment, or opposite, carries X-ray equipment to the patient.This for the patient all be trouble with waste, and be that pressure is arranged especially under those situations, for example the patient has been if repeatedly and inadvertently moved the medical tube as the carrier pipe, then requirement insertion again and X ray repeatedly.X ray guiding has also taken a large amount of time, make when the patient proposes described pipe or when careful insertion person give again manage pipe when locating repeatedly relocate the trouble that becomes.

Recently, people's such as Golden U.S. Patent No. 5,425,382 discloses a kind of checkout gear that is used to detect medical tube position in patient's body.That checkout gear detects the static-magnetic sound intensity gradient that is produced by the magnet that is connected on the medical tube, and the numerical value and the grade of gradient are indicated to user.Use a such detection to adorn the position that promptly to detect and to verify medical tube, do not need further to confirm the position of medical tube with X ray.

Although in this field, obtained progress, also there are needs technically, be exactly the additional and/or improved medical tube that can detect by suitable checkout gear.The present invention has realized that needs, and relevant advantage further is provided.

Briefly, this disclosure of the Invention can in patient's body, detect and localized medical tube by suitable checkout gear.Medical tube of the present invention comprises pipe or the device that is suitable for inserting patient body, and comprises a permanent magnet that connects therewith.This magnet can be solid or non-solid (for example, hollow) magnet, and can be inflexible or nonrigid (for example, but extension) magnet.In most preferred embodiment, this magnet is enduringly or is removably to be connected on this pipe.

In an embodiment of this invention, a medical tube that is disclosed comprises the hollow permanent magnet that is suitable for inserting a pipe or a device of a patient body and is connected to this medical tube.This hollow permanent magnet can be connected to the outer surface or the inner surface of this medical tube, itself is an integral body with this medical tube perhaps.

In another embodiment, the medical tube that is disclosed comprises the permanent magnet that is suitable for inserting a pipe or a device of patient body and is connected to this medical tube, and wherein this magnet is connected on this medical tube in primary importance.One inserts in patient's body, and this magnet just can be moved to a second position that does not influence described medical tube desired use.

Also have an embodiment in addition, a medical tube that is disclosed comprises a permanent magnet that is suitable for inserting the intravital pipe of patient or device and is connected with this medical tube, and wherein this magnet is connected with the outer surface of this medical tube.

Also have an embodiment in addition, a medical tube that is disclosed comprises pipe or the device that is suitable for inserting patient body, and further comprises permanent magnet and detecting element or the device that is connected with this medical tube.

With reference to following detailed explanation and accompanying drawing, these or all the other aspects of the present invention will be better understood.

Fig. 1 illustrates the typical magnet that can be connected with medical tube of the present invention to 1F.

Fig. 2 A to 2D illustrates and is used for typical structure that a hollow magnet is connected with medical tube.

Fig. 3 A and 3B illustrate a magnet that is connected with the outer surface (Fig. 3 B) of the inner surface (Fig. 3 A) of medical tube.

Fig. 4 A to 4C illustrates a medical tube with connected magnet, and magnet wherein can be moved to a position of not having influence after medical tube is inserted patient body.

Fig. 5 A and 5B illustrate an interchangeable embodiment, and magnet can be moved to a position of not having influence after medical tube is inserted patient body there.

Fig. 6 A illustrates with 6B has the magnet (Fig. 6 A) that is connected with the outer surface of medical tube, and the medical tube of the magnet (Fig. 6 B) that is connected with the top of medical tube.

Fig. 7 A and 7B illustrate the medical tube that has connected magnet and have the biopsy mouth; Fig. 7 C illustrates to have connected magnet and has the detecting element of contiguous this magnet placement or the medical tube of device.

Fig. 8 A and 8B illustrate the static magnetic field strength of a magnet that is connected with medical tube of the present invention.Specifically, the direction of the dipole of detection (dipole) (being polarity) depends on the direction of magnet: Fig. 8 A has described the dipole of magnet and has pointed to approach end; Fig. 8 B has described the dipole of magnet and has pointed to far-end.

Fig. 9 A and 9B illustrate position and the direction that detects medical tube of the present invention by means of suitable checkout gear.

A graphic extension shown in Figure 10 typical medical tube of the present invention, wherein medical tube is one and has trachea (tracbeal) conduit that the magnet that fixed range place connects is arranged at the distance far-end.

Point out as top, The present invention be directed to and be used for inserting and detect the intravital medical tube of patient.As used herein, term " medical tube " expression can be inserted any and all types of pipes or the device of patient body, includes, but is not limited to conduit, lead, and exhibition is stretched, along separate routes (sbunt) and Medical Instruments.As used in this article, " conduit " comprises such article such as carrier pipe, catheter and dilating catheter, and the conduit of nose stomach, endotracheal pipe, stomach pump line, the wound excretory duct, rectal catheter, vascular conduit, sengstaken-Blakemore tube, colonic decompression pipe, pH conduit, blood-gas detector, manometer tube, image acquisition pipe, power conduit, and urinary tract." lead " is normally used for guiding or placement dilator and other medical tube in patient's body, and is considered to medical tube in the context of the invention." Medical Instruments " comprises endoscope and colonoscope, and as the imaging device of image and supersonic imaging apparatus, and be considered to the employed medical tube of this paper.In brief, used term medical tube is to comprise inserting any exterior object that patient body is used for any purpose in this scope of invention, and described any purpose comprises (but being not limited to) medically, diagnosis and/or therapeutic purposes.

In the time of in inserting patient's body, medical tube is detected by suitable checkout gear.In practice of the present invention, at United States Patent (USP) N.5 an optimum detection device is, 425,382 and by disclosed among the March 23 nineteen ninety-five international open disclosed international application No.PCT/US94/10417 of text No.WO95/08130, all (these files are combined by doing as a whole reference in this article, and are appointed as jointly: people's such as Golden checkout gear) from people such as Golden for the two.People's such as Golden checkout gear is by detecting position and the direction that the static magnetic field strength gradient that is produced by the permanent magnet that is connected with medical tube detects medical tube.As used herein, term " connection " device or for good and all fixing, or removable connection, or nestle up medical tube.

In one embodiment, carrier pipe for example, magnet can be connected with the end of described medical tube.In another embodiment, magnet can be connected with described medical tube at its approach end and a position between the far-end.For example, with regard to sengstaken-Blakemore tube, magnet can be on the bulb of stomach with the bulb of esophagus below a position be connected with medical tube.With regard to the conduit of endotracheal pipe or nose stomach, magnet can be positioned in apart from the position of a specific distance of end of this pipe, hereinafter more goes through.

Because magnet of the present invention is a permanent magnet, so it does not need the energy.So magnet keeps its magnetic field for a long time, make medical tube can locate the shortcoming that is not connected with detecting chronically with inside or external power source.Specifically, by avoiding using power supply, use the necessary electrical connection of power supply to be avoided.Therefore, because magnet makes the danger (maybe may be killed by an electric shock) that does not have electric shock for the patient.In addition, the static magnetic field of magnet passes the cell tissue and the skeleton of human body undampedly.This characteristic can both detect medical tube any position in patient's body.

As mentioned above, magnet (and thereby medical tube) can use any suitable checkout gear detected.In a most preferred embodiment, checkout gear is people's such as Golden a checkout gear.This checkout gear comprises two static magnetic field strength detectors of geometric configuration, so that the magnetic field intensity gradient that is produced by the magnet that is connected with medical tube is also detected in the similar magnetic field (that is, the magnetic field of the earth) around the zero value detection in addition.Checkout gear is a sensitive electronic machine, can detect by several centimetres to several decimeters and preferably about 2 centimetres of quite little magnetic field intensity gradients that produce to the magnet of about 3 decimeters range distance.It also indicates Grad, thereby thereby allow user can measure exactly magnet and the position and the direction of medical tube.In a most preferred embodiment, this checkout gear is with size and the two indication Grad of polarity.

Because people's such as Golden checkout gear, does not need the position after additional imaging device further confirms the medical tube insertion for the sensitivity of the magnetic field intensity gradient of magnet.Therefore, medical tube of the present invention is suitable for using lacking in the environment of this equipment.For example, family's nurse of X-ray equipment is arranged seldom at the scene, medical tube of the present invention is particularly suitable for using in such place.Other useful setting comprises emergency room, inserts to exist side by side apace there and promptly uses medical tube normally essential.In addition, use medical tube of the present invention will reduce the radiation of X ray during the fluoroscopic examination.In other words, behind the initial position of X-ray procedure medical tube, its position after this can be checked with checkout gear, thereby avoids repeatedly with its position of X ray checking.

As mentioned above, people's such as Golden checkout gear detects the position and the direction of the magnet that is connected with medical tube.On the other hand, that checkout gear is the direction that user has been indicated the magnet dipole.Therefore, by on fixed and known direction, connect magnet and medical tube, then the direction of magnet (thereby the medical tube that reaches) can be determined.In a most preferred embodiment, magnet is connected on the described medical tube like this, so that the axis direction that its dipole is parallel to medical tube (promptly, axis extends from the end of approach end to medical tube) and, in an improved most preferred embodiment, its dipole, is parallel to the axis direction of medical tube and points to approach end (that is, the magnets N ultimate ratio S utmost point is more near the approach end of medical tube).

In addition, should be realized that when the checkout gear with people such as Golden detected magnet, the polarity of unlike signal value (being plus or minus) depended on the direction of the magnet of detection.Shown in Fig. 8 A and 8B, have the medical tube (850) of approach end (853) and terminal (854), magnet (851) is connected with the end of pipe.The static magnetic field that line (857) expression is produced by magnet, the direction of line depend on magnet and whether are connected like this that pipe is gone up so that its dipole with arrow (859) expression is parallel to the axis direction of pipe and points to approach end direction (Fig. 8 A) or sensing end direction (Fig. 8 B).

Because different signal values has been indicated the direction of magnet, the secondary of magnet is connected on the medical tube with fixed and known direction.In addition, this checkout gear by indexing so that magnet the direction of (thereby and medical tube) by the correct user that is shown to.The two poles of the earth that it is exactly magnet that medical tube of the present invention preferably has as the represented magnet-Na that is fixed to this place of Fig. 8 A are parallel to the approach end direction of the axis direction and the point tube of medical tube.By keeping this direction, people's such as Golden checkout gear can be indicated the direction (in most preferred embodiment, the dipole direction of it and magnet is 180 °) of magnet.These characteristics are useful in various equipment.For example, when placing its termination at carrier pipe, people's such as Golden checkout gear is indicated to the user terminal positive sense patient's of carrier pipe foot whether, still points to patient's head.If point to patient's head, it is incorrect that this device can indicate this pipe to insert.Similarly, under the situation of the medical tube as lead, user can determine direction that lead moving with further checking it, example has entered wishes the tremulous pulse that enters and is just moving on desirable direction.

This respect content of the present invention is by more one going on foot explanation with reference to Fig. 9 A and 9B.Fig. 9 A has described a carrier pipe (980), has the permanent magnet (980) that is connected with the end of this medical tube, has the permanent magnet (982) that is connected with the end of this medical tube, and wherein the magnetic pole of magnet points to the approach end of medical tube.After inserting patient's stomach, checkout gear (984), indicated as going up with arrow (986) at visual display unit (987), detect the position of magnet and correctly indicate the direction and thereby the direction of this medical tube end of magnet for user.For example, carrier pipe (980) is shown in the esophagus as Fig. 9 B " to roll ", arrow (986) on the visual display unit (987) of checkout gear (984) will be indicated the end sensing patient's of this medical tube head, and definite thus carrier pipe is correctly located in patient's body.

The rare-earth magnet that magnet of the present invention is normally very little.Suitable magnet comprises the rare-earth magnet as scythe and cobalt kind and neodymium iron boron class, and the two all can produce very high magnetic field intensity in unit volume.Although it is best producing the magnet of high magnetic intensity for their size, the weak magnet as alnico magnet or ceramic material also can be utilized.As hereinafter discussed in detail, magnet of the present invention can be solid or non-solid magnet, and further can be inflexible or nonrigid magnet.Non-rigid magnet comprises the suspension of (but being not limited to) magnetic-particle, and the form of the flexible of magnetic material (as the putty-like cohesive material).

In one embodiment, magnet is a non-solid hollow magnet with inner chamber.The exemplary embodiments that is suitable for the hollow magnet of use in the present invention's practice is illustrated in Fig. 1.With reference to Figure 1A, the hollow cylinder magnet (110) with inner chamber (100) is illustrated.Similarly, Figure 1B, 1C, 1D and 1E illustrate open circles triangle (ellopsoid) magnet (111), hollow rectangle magnet (112), hollow prismatic magnet (113), and hollow polygon magnet (114), each all has inner chamber (100) respectively.Have length range especially in the typical hollow magnet of Figure 1A to 1E illustrated from about 0.75mm to about 12mm, and preferably from 1.5mm to 6mm.

In other words, the length of hollow magnet can be quite short, obtains a thin type magnet.For example, the hollow cylinder magnet shown in Figure 1A can be hollow torrus shape or the annular magnet (115) shown in Fig. 1 F, and has inner chamber (100).Other shape can be employed equally.In this embodiment, hollow toroidal magnet can typically have one approximately from the length or the thickness of the scope of 0.1mm to 5mm.

In fact a single magnet or a plurality of magnet can be connected on the single medical tube in the present invention.For example, with regard to the thin type magnet, as at the hollow toroidal magnet as shown in Fig. 1 F, one group of hollow toroidal magnet can be connected on the medical tube.

In one embodiment of the invention, hollow magnet is connected on the medical tube so that as material, light, and data or the like can be passed the inner chamber of magnet.This can reach, and for example, connection medical tube and hollow magnet by as shown in Figure 2 reach.With reference to Fig. 2 A, be connected on the medical tube (222) around the excircle (221) that hollow magnet (220) can be by being positioned at magnet medical tube.On the other hand, the inner periphery that is connected medical tube (222) (223) that hollow magnet (220) can be as shown in Fig. 2 B, perhaps hollow magnet (220) as shown in Fig. 2 C and 2D can and medical tube (222) be whole.

Hollow magnet can be connected on the described medical tube by fixing there, maybe can pass through, for example, by magnet being positioned at an ad-hoc location that is limited in medical tube in suitable magnet cavity or the zone.For example, with reference to Fig. 3 A, hollow magnet (330) can be fixed within the interior zone of medical tube (333) and be limited by inner surface (336) and inner fin (335) and (337).In addition, as shown in Fig. 3 B, hollow magnet (330) can be limited in the perimeter of the medical tube (333) that limited by outer surface (331) and outside fin (338) and (339).In this embodiment, the length of magnet, and with regard to its external diameter of Fig. 3 A, or with regard to its internal diameter of Fig. 3 B is determined size like this so that magnet is connected on the medical tube between the fin.

Yet, should be realized that various technology can be applied to being connected of magnet and medical tube.Such technology includes, but is not limited to use suitable glue and/or band, and magnet is added in the product of described medical tube so that magnet and medical tube self become integral body.

In the above embodiments, hollow magnet is the rigidity magnet preferably, and inner chamber is used to finish its expectation function by suitably dimensioned with the permission medical tube.For example, with regard to carrier pipe, inner chamber has enough volumes allowing food, and other solid, and liquid and/or gas material by the inside of carrier pipe, pass the inner chamber of described magnet, and endways or discharge medical tube near terminal.As the application of others, inner chamber will be determined suitable dimensions to be used for the expectation function of medical tube, for example comprise, determine size with permission light, video image, and ultrasonic energy waits and passes medical tube.For example, for the individual hollow cylinder magnet that round cavity is arranged, intracavity diameter typically may change in from about 0.5mm to about 3mm scope.

In the present invention on the other hand, magnet may be solid magnet.In this embodiment, magnet may be connected with medical tube with the primary importance of the desired use that influences medical tube hindering, and can move after insertion or move to the second position.The second position of magnet is exactly the position that magnet does not hinder or influence the desired use of medical tube.

In this embodiment, magnet may be connected in the inner passage of medical tube.After medical tube is placed in patient's body, can be moved to no impact position by using suitable mobile device magnet.For example, shown in Fig. 4 A, magnet (401) is arranged at the lining, inner passage (403) of medical tube (410).Contiguous this magnet and what be in contact with it is flexible material (415) to deformation sensitive.Inflatable chamber (413) with expansion tube cavity (418) is positioned between medical tube inwall (412) and the magnet, and when expand in the chamber, it is moving magnet as shown in Fig. 4 B.With reference to Fig. 4 B, magnet (401) is extruded and heads on flexible material (415) this makes magnet move laterally to medical tube along axis.Inflatable chamber (413) has an inner chamber (419), and when inflatable chamber expanded, it allowed pipe to be used in its expection mode.

For preventing the displacement of magnet (401) or inflatable chamber (413), the inwall of medical tube (412) can have rib (420) and (421), this rib shown in Fig. 4 C, from the inwall (412) of medical tube to projecting inward.With reference to Fig. 4 A, expansion tube cavity (418) extends to the approach end of medical tube from inflatable chamber (413).Be this chamber of expanding, user can, for example, can inject an amount of gas or liquid and enter expansion tube cavity, as shown in Fig. 4 B, the inflatable chamber that expands thus and move this magnet.

In Fig. 4, magnet is described as the rigidity magnet.In an alternative embodiment, magnet may be non-rigid magnet so that magnet by, for example, the distortion that produces by the expansion of inflatable chamber and be moved to a position of not having influence.

In an embodiment that can further select, magnet can be connected on the medical tube like this, so that magnet is shifted after inserting patient body, makes the inner passage of medical tube be opened to allow expection to use this pipe.In this embodiment, magnet can pass through, and for example, by investing in the chamber of this medical tube fixingly, is connected on the medical tube.As shown in Fig. 5 A, chamber (501) hold magnet (503) and are attached in the medical treatment (510) along contact portion (505).In order to insert in patient's body, medical tube and chamber present and the close diameter of medical tube shown in Fig. 5 A jointly.This can pass through, and for example, utilizes a kind of suitable interim glue to realize along the gummed of the contact wire (507) between chamber (501) and the medical tube (510).After medical tube is inserted into the intravital precalculated position of patient, magnet (503) in chamber (501) can be shown in Fig. 5 B be moved to such position like that, so that the inner chamber (506) of medical tube (510) no longer shrinks, and medical tube can be used to its expectation function thus.

In another aspect of this invention, having a medical tube that is connected to medical tube outer surface magnet is disclosed.As shown in Figure 6A, magnet (601) is connected the outer surface (606) of medical tube (604), and outer surface may be the length direction along medical tube, as shown in Figure 6A, or at the end of medical tube shown in Fig. 6 B.In this embodiment, described magnet may be inflexible or nonrigid magnet.And can be connected with magnet in any suitable manner.In one embodiment, this magnet is nonrigid, and is contained in the suitable closure that is connected with medical tube.When at the end of medical tube fixedly the time, this magnet may be flexible pointed shape.

In another embodiment, medical tube may be that a living tissue detects pipe, and magnet detects pipe from the living tissue that is connected in the living tissue detection mouthful distally of conduit.Such medical tube is illustrated in Fig. 7 A and 7B.With reference to Fig. 7 A, medical tube (701) has and its whole magnet (703) that is connected, and the living tissue that has between the approach end (707) that is fixed on magnet and medical tube detects mouthful (705).In an alternative embodiment, shown in Fig. 7 B, medical tube has the magnet (703) that is connected with the end (709) of medical tube, and between the end of medical tube and described approach end (707) fixed tissue detection mouth (705).

In another aspect of this invention, the medical tube with coupled magnet is disclosed, and further comprises a detecting element or device.Being used for relevant detection element that practices of the present invention and device is those devices that detect one or more parameters of various ambient parameters, these parameters comprise pressure, concentration, pH value, temperature, color and similar parameters, and further comprise and be used for reception and/or transmission of video or rest image, light, ultrasonic energy and similar information appropriate device.In this embodiment, can be carried to the approach end of described pipe by a corresponding conduit or lead from the information of detecting element or device.Magnet preferably nestles up detecting element or device is fixed.A typical embodiment is illustrated in Fig. 7 C, and medical tube (701) has the magnet (703) that is connected with medical tube and nestles up detecting element or device (702) there.A corresponding lead (or several lead) (706) is connected to this detecting element or device the approach end (707) of this medical tube.

As mentioned above, in of the present invention practicing, magnet may be solid or non-solid, rigidity or non-rigid magnet.Rigidity magnet (solid and non-solid) can obtain from each source, comprise dexter (Dexter) company (Freemont (Fremout), CA).But non-rigid magnet (have solid and non-solid two kinds) generally includes and is contained in suspension or the unguentum, or is contained in a kind of harder a plurality of magnet granules in the material of flexible.Suitable suspension or unguentum include, but is not limited to as if oil, water, glycerol, ethanol, the magnetic-particle in a kind of like this liquid of liquid polymer and analog.Harder but magnet flexible is included in the putty-like cohesive material, polymer, silicon, the magnetic-particle in high viscosity liquid and the analog.It is fixing that suitable polymers is included under the room temperature state, but under the body temperature state those polymer of flexible.

In practical application of the present invention, non-rigid magnet distinguishingly is limited in the suitable closure.With regard to suspension or unguentum, such magnet is connected so that picture thick liquid or unguentum can be from medical tube seepage or discharges with medical tube in such one suitable closure.More tacky non-rigid magnet, as putty-like cohesive material and analog, more difficult leakage, but still have benefited from suitable closure.In addition, for carrier pipe, such magnet can separate with medical tube and discharge in patient's stool after a period of time.

In order further to illustrate exemplary embodiments of the present invention, an endotracheal tube is described in Figure 10.In this embodiment, this endotracheal tube has apart from its terminal connected magnet in fixed range place.This fixed range is such, and when endotracheal tube correctly was positioned in patient's trachea, this magnet was positioned in below patient's the thyroid film of ring immediately or is close to patient's the thyroid film of ring.

Endotracheal tube is to insert the typical plastics medical tube (that is endotracheal tube) that helps breathing in the mouth.When nose inserts, it is called as the conduit of nose stomach.As used herein, described term endotracheal tube comprises two kinds in the conduit of endotracheal tube and nose stomach.The placement of endotracheal tube may be difficult, especially with regard to the degree of depth of inserting.This endotracheal tube should provide the ventilation path of cleaning to two lungs.If insert too deeply, endotracheal tube may make air only flow in a lung and flow out, perhaps even may stop up the ventilation of certain main branch (mainstem).

With reference to Figure 10, endotracheal tube (1001) has apart from the magnet (1003) that is connected with outer surface (1004) of terminal (1007) fixed ranges " X ".Endotracheal tube has the inner chamber (1009) of permission air by endotracheal tube.Distance " X " is to determine that like this in the time of in described endotracheal tube inserts patient's body well, magnet is just in time below the thyroid film of patient's ring (or being close to).For normal adult, distance " X " may extremely change in about 6cm scope from about 4cm, is typically about 5cm.

This encircles thyroid film is tissue part between thyroid cartilage and cricoid cartilage.This film is 1cm to 1  cm place under adult's epidermis typically.The subcutaneous degree of depth has the concordance of height between patient and the patient, and with respect to the recognizable mark of patient outside, the position of the thyroid film of described ring is identification easily, makes in the detection of this position magnet favourable especially.In this embodiment, magnet preferably is positioned at the front side of endotracheal tube, so that when it correctly inserts patient's trachea, magnet just in time arrives the thyroid film of ring back.In addition, the two poles of the earth of magnet can be parallel with the axis aspect of endotracheal tube, and are perhaps horizontal.

From should be appreciated that,, under the situation that does not break away from the spirit and scope of the present invention, can carry out various distortion although specific embodiment in order to demonstrate the invention is described in this article.Therefore, the present invention is not limited except additional claims.

Claims (34)

1. a medical tube comprises being suitable for inserting a pipe of patient body or the hollow permanent magnet that installs and be connected with described medical tube.

2. medical tube as claimed in claim 1, wherein said hollow magnet is connected with the outer surface of described medical tube.

3. medical tube as claimed in claim 1, wherein said hollow magnet is connected with the inner surface of described medical tube.

4. medical tube as claimed in claim 1, wherein said hollow magnet and described medical tube are whole.

5. medical tube as claimed in claim 1, wherein said medical tube are by following selection: branch road, the stent, carrier pipe, catheter, dilating catheter, stomach tube, endotracheal tube, stomach pump line, excretory duct, rectal tube, vascular conduit, sengstaken-Blakemore tube, the colonic decompression pipe, PH conduit, blood-gas detector, manometer tube, image acquisition equipment, power conduit and urinary tract.

6. medical tube that in patient's body, has desired use, comprise and be suitable for inserting a pipe of patient body or installing and the permanent magnet that is connected with described medical tube, wherein said magnet and described medical tube a primary importance that influences this desired use be connected and, after inserting patient's body, can move on to first second position of the desired use that does not influence described pipe or device.

7. medical tube as claimed in claim 6, wherein said magnet is connected so that described magnet can easily be moved to the described second position with a pliable and tough zone of described medical tube.

8. medical tube as claimed in claim 6, wherein said magnet is moved to the described second position by an expansion chamber that is connected with described magnet, so that when described expansion chamber expanded, described magnet was moved to the described second position.

9. medical tube as claimed in claim 6, wherein said magnet are positioned at an outer intracavity that is connected to described medical tube.

10. medical tube as claimed in claim 6, wherein said medical tube is from branch road, the stent, carrier pipe, catheter, dilating catheter, stomach tube, endotracheal tube, stomach pump line, excretory duct, rectal tube, vascular conduit, sengstaken-Blakemore tube, the colonic decompression pipe, PH conduit, blood-gas detector, manometer tube, image acquisition equipment, selected in power conduit and the urinary tract.

11. a medical tube comprises being suitable for inserting a pipe of patient's body or installing and the permanent magnet that is connected with described medical tube that wherein said magnet is connected with the outer surface of described medical tube.

12. medical tube as claimed in claim 11, wherein said magnet is connected with outer surface at the end of described medical tube.

13. medical tube as claimed in claim 11, wherein said magnet is connected with outer surface along the length direction of described medical tube.

14. medical tube as claimed in claim 11, wherein said magnet are non-rigid magnets.

15. medical tube as claimed in claim 11, wherein said medical tube has an opening along its length direction.

16. medical tube as claimed in claim 11, wherein said medical tube is from branch road, the stent, carrier pipe, catheter, dilating catheter, stomach tube, endotracheal tube, stomach pump line, excretory duct, rectal tube, vascular conduit sengstaken-Blakemore tube, colonic decompression pipe, the PH conduit, blood-gas detector, manometer tube, image acquisition equipment is selected in power conduit and the urinary tract.

17. a medical tube comprises pipe being suitable for inserting patient body or device and the permanent magnet that is connected with described medical tube and detecting element or device.

18. medical tube as claimed in claim 17, wherein said detecting element or device detect from pressure, concentration, pH value, temperature, light intensity, ultrasonic image, a parameter of selecting in video image and the color.

19. a medical tube comprises the pipe or device and the coupled permanent magnet that are suitable for inserting patient body, wherein said medical tube has an end and apart from the connected described magnet of a described terminal fixed range.

20. medical tube as claimed in claim 19, wherein said fixed range is changing to about 6cm scope apart from described end from about 4cm.

21. medical tube as claimed in claim 19, wherein said fixed range is apart from the about 5cm of described end.

22. medical tube as claimed in claim 19, wherein said magnet are the solid magnets that is connected with the outer surface of described medical tube.

23. medical tube as claimed in claim 19, wherein said magnet are hollow magnet.

24. medical tube as claimed in claim 19, wherein said medical tube is an endotracheal tube.

25. medical tube as claimed in claim 24, wherein said endotracheal tube are endotracheal pipes.

26. medical tube as claimed in claim 11, wherein said institute pipe conduit is the conduit of a nose stomach.

27. medical tube as claimed in claim 19, wherein said medical tube are sengstaken-Blakemore tubes.

28. medical tube as claimed in claim 19, wherein said magnet is connected on the described medical tube movably.

29. medical tube as claimed in claim 19, wherein said medical tube is from branch road, the stent, carrier pipe, catheter, dilating catheter, stomach tube, the stomach pump line, excretory duct, rectal tube, the vascular conduit, sengstaken-Blakemore tube, colonic decompression pipe, the PH conduit, blood-gas detector, manometer tube, image acquisition equipment is selected in power conduit and the urinary tract.

30. medical tube, comprise and be suitable for inserting a pipe of patient body or installing and the permanent magnet that is connected with described medical tube, this medical tube has an approach end and an end, this permanent magnet per unit volume produces an enough strong static magnetic field, allow when inserting patient body to detect by the static magnetic field checkout gear of magnet with the described medical tube of box lunch, this checkout gear has at least two equal intensity detectors of static-magnetic that become geometry, so that the zero value detection in similar magnetic field is a null value together, and wherein said magnet points to the axis of described medical tube abreast with magnetic pole fixed-direction is connected with described end so that by the described end of polarity indication described medical tube in patient's body of the static magnetic field of the described magnet that described checkout gear detected towards.

31. medical tube as claimed in claim 30, wherein said magnetic pole are pointed to the described approach end of described medical tube.

32. medical tube as claimed in claim 30, wherein said magnet is permanently fixed on the described medical tube.

33. medical tube as claimed in claim 30, wherein said magnet attaches on the described medical tube movably.

34. medical tube as claimed in claim 30, wherein said medical tube is from branch road, the stent, carrier pipe, catheter, dilating catheter, stomach tube, endotracheal tube, stomach pump line, excretory duct, rectal tube, vascular conduit, sengstaken-Blakemore tube, the colonic decompression pipe, PH conduit, blood-gas detector, manometer tube, image acquisition equipment is selected in power conduit and the urinary tract.

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