WO2006003960A1 - 色変化インジケーターを有するカテーテル位置確認用部材と該カテーテル位置確認用部材を有するカテーテル - Google Patents
色変化インジケーターを有するカテーテル位置確認用部材と該カテーテル位置確認用部材を有するカテーテル Download PDFInfo
- Publication number
- WO2006003960A1 WO2006003960A1 PCT/JP2005/012004 JP2005012004W WO2006003960A1 WO 2006003960 A1 WO2006003960 A1 WO 2006003960A1 JP 2005012004 W JP2005012004 W JP 2005012004W WO 2006003960 A1 WO2006003960 A1 WO 2006003960A1
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- WO
- WIPO (PCT)
- Prior art keywords
- catheter
- color change
- position confirmation
- confirmation member
- member according
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/008—Sensor means, e.g. for sensing reflux, acidity or pressure
- A61J15/0088—Sensor means, e.g. for sensing reflux, acidity or pressure for sensing parameters related to the device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/0069—Tubes feeding directly to the intestines, e.g. to the jejunum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J2205/00—General identification or selection means
- A61J2205/20—Colour codes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M2025/0008—Catheters; Hollow probes having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type
Definitions
- Catheter position confirmation member having color change indicator and catheter having force force position confirmation member
- the present invention relates to a catheter position confirmation member that is present in the body having an indicator that causes a color change, a catheter that is present in the body using the catheter position confirmation member, and a position where the catheter is present in the body. It relates to the confirmation method.
- the position confirmation method by X-ray contrast is concerned that it may cause a decrease in QOL due to exposure of patients, particularly infants and children, and is not a suitable method for confirmation every time.
- the confirmation method on litmus paper is the trouble of preparing litmus paper separately or removing the syringe that sucked gastric juice and dropping it onto litmus paper. This is a method that tends to be avoided in actual medical practice.
- a catheter position confirmation method in which a catheter has a special function has been proposed.
- One of them is a method for detecting and determining the tip position of the catheter by placing a radioactive substance that emits radiation at the tip position of the catheter placed in the body and detecting the radiation with an external detector.
- Patent Document 1 a method for detecting and determining the tip position of the catheter by placing a radioactive substance that emits radiation at the tip position of the catheter placed in the body and detecting the radiation with an external detector.
- Patent Document 2 a catheter tip position confirmation method using a combination of a special catheter (Patent Document 2) in which a permanent magnet is arranged at the tip and a device (Patent Document 3) for detecting the tip position of the special catheter has been proposed.
- Patent Document 2 a special catheter
- a special detection device is also used for confirming the catheter tip position. It needs to be used and its implementation is costly.
- Patent Document 1 US Patent No. 5099845
- Patent Document 2 Special Table 2000—512873
- Patent Document 3 Japanese Translation of National Publication No. 9 503054
- the main object of the present invention is to confirm the position of the distal side region of the catheter when the feeding catheter is placed in the body, particularly in the stomach tube. It is an object of the present invention to provide a catheter position confirmation member that can be carried out simply, reliably and safely, and a catheter using the same.
- a catheter that is present in the body having an indicator (hereinafter referred to as a color change indicator) that causes a color change by contact with a body fluid such as gastric fluid.
- the inventors have come up with a position confirmation member. That is, the present invention is attached to a medical catheter to be present in the body, for example, assembled in a state where it is joined to or inserted into an arbitrary visible position of the medical catheter.
- a catheter position confirmation member characterized in that it is a member used by being inserted, and the member has an indicator which causes a color change by contact with a body fluid.
- the color change refers to a change in color tone and Z or color.
- the catheter of the present invention refers to a hollow (tubular) inserted into the body, and may have a catheter connecting portion as shown in FIG.
- the present invention also relates to a medical catheter intended to perform various treatments in the body by using the catheter position confirmation member.
- the catheter position confirmation member constituting the medical force tail and the catheter may be combined in a detachable or non-separable manner of joining.
- the present invention uses the catheter to bring the catheter position confirmation member into contact with bodily fluid, and the presence or absence of a color change of the indicator visually recognizes the change.
- a catheter position confirmation method characterized by confirming a tip position of the catheter. According to this catheter confirmation method, the catheter position can be confirmed by bringing the catheter position confirmation member into contact with bodily fluid and visually confirming the presence or absence of the color change of the indicator. As a result, it was possible to confirm the position of the catheter, and the time required for the litmus paper evaluation method in the gastric juice aspiration method could be greatly simplified.
- the color change indicator constituting the catheter position confirmation member in the present invention is basically composed of a dye and a dye carrier. However, if the color change indicator can be composed only of the dye, it may be composed of only the dye. .
- the type of the color change indicator is not particularly limited as long as it causes a color change that can be confirmed by visual recognition of the position of the catheter by contact with bodily fluids. Alkaline body fluids (secretory fluids) are often secreted, so it is desirable to produce a color change depending on the hydrogen ion concentration of the body fluids. For example, when the target location of the catheter is the stomach, gastric fluid, etc. There are those that cause a color change when in contact with acidic secretions.
- the color change indicator is adjusted to neutral, that is, pH 6.5 to 7.5 before contact with the body fluid. It is preferable.
- the color change indicator is adjusted to the neutral range before contact with the body fluid as described above, it is possible to select gastric fluid, etc. by selecting the indicator and using various indicators. Since acidic secretion can be used in combination with detection of alkaline secretion such as duodenal juice, it can be confirmed whether the catheter position, for example, the distal position of the catheter is in the stomach or near the duodenum. As described above, for example, if a color change occurs due to contact with acidic gastric juice, it can be confirmed that the catheter has reached the stomach.
- the color change indicator is composed of a pigment force that causes a significant color change at pH 6.0 or less, more preferably pH 3.0 or less, and the color change causes the catheter to reach the stomach. Is particularly preferable since it can be easily confirmed.
- the cause of the color change of the pigment is due to the change of chemical structure depending on pH (reversible color change in the chemical equilibrium state) due to alteration or decomposition of chemical structure depending on pH (irreversible)
- the color change may be caused by any of the above causes.
- the type of the dye is not particularly limited as long as it can constitute a color change indicator so as to cause a color change to the extent that the presence position of the catheter in the body can be visually confirmed by contact with the body fluid as described above.
- Examples of the edible natural pigment include flavonoid pigments, carotenoid pigments, quinone pigments, porphyrin pigments, and the like.
- anthocyanin dyes which are one of the flavonoid dyes, emit different colors at various pHs that are very sensitive to their pH (acid, neutral to alkaline, red, red purple to purple, In the solution of the problem in the present invention, it can be said that it is a pigment that causes a suitable color change.
- the anthocyanin pigments are polyphenols, considering the recent health boom, it is very preferable from the viewpoint of social image.
- anthocyanin pigments include red cabbage pigment, perilla pigment, purple corn pigment, purple imo pigment, red radish pigment, grape skin pigment, grape juice pigment, blueberry pigment, elderberry pigment, boysenberry pigment, hibiscus pigment, etc. Is mentioned.
- the anthocyanin dye may be purchased as a dye maker powder or an aqueous solution.
- the anthocyanin dyes are often obtained in an acidic state (around pH 3.0) due to the production method. Therefore, it is necessary to neutralize prior to this step when mixing with the dye carrier. Neutralization can be carried out in an alkaline aqueous solution.
- the alkaline agent include sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium hydroxide, magnesium hydroxide salt, and ammonia. Specific examples include water.
- anthocyanin dyes become chemically structurally unstable in neutral to alkaline aqueous solutions, and in addition to the color change reaction due to the structural change due to chemical equilibrium, the decomposition process of the chemical structure coexists and the chromaticity is attenuated. It is known to fade.
- the indicator precursor is immediately dried and used as a color change indicator (dry body). When taken, it has been confirmed that the stability of the dye is maintained for a long time.
- quinone colorant Another example of the natural food colorant is a quinone colorant.
- quinone dyes are classified into benzoquinone dyes, naphthoquinone dyes, anthraquinone dyes, phenanthrene quinone dyes, etc.
- anthraquinone dyes include cochineal dyes, lacquer dyes, akane dyes, etc.
- the abundance of safety data and the level of familiarity are particularly suitable pigments.
- cochineal dye is sold as a powder, and its aqueous solution is also neutral, there is an advantage that a neutralization step which becomes a problem when using the anthocyanin dye is not necessary.
- Another example of the dye is an edible synthetic dye.
- food reds are particularly suitable for the color change of the color change indicator at a power of pH 3.0 or lower, which is classified into food reds, food yellows, food blues, food greens, etc. Specifically red Color 3 or red 105 is listed.
- the color change of the edible reds is due to alteration or decomposition of the chemical structure depending on the pH (irreversible color change).
- the food reds have the disadvantage that the pH adaptation range is less than pH 3.0 compared to the natural food dyes, but the state of color change is more dramatic and Z or clear than the natural food dyes. There is a merit when it becomes easy to judge the presence or absence of contact.
- the dye carrier used in the present invention is not particularly limited as long as the dye carrier can stably carry the dye and is harmless to the living body.
- the dye carrier can stably carry the dye and is harmless to the living body.
- fibers, structures of the fibers, sponges, gels are used. Dietary fiber is preferred.
- the surface strength of safety is preferably such that the dye carrier has a material strength that is safe even when taken orally. More specifically, materials satisfying these conditions that are preferably approved as foods include agar, gelatin, alginic acid, cellulose, starch and the like. 1S Among these, water-soluble ones are preferable.
- a color change indicator composed of a water-soluble material that is safe even when ingested is used after confirming that the catheter to be present in the body has reached the target position in the body by the color change. Dissolving the change indicator makes it possible to immediately inject the desired medical action without removing the color change indicator from the catheter, for example, when the catheter is an enteral feeding catheter. There is an advantage that simplification of the medical process can be realized.
- the color change indicator 1 in the present invention is composed of the above-mentioned dye and dye carrier strength, but is preferably a dry body.
- the biggest reason is that the liquid absorption performance of the color change indicator is improved by drying, so the color change of the color change indicator in a shorter time is shorter than when using a non-dry color change indicator. This is because it becomes feasible. Further, when a dye that is unstable in a solution state is used, it also has an effect of stabilizing the dye. For the above reasons, it is desirable that not only the dye carrier but also the dye is a dry body.
- the drying method used for the drying is a generally known drying method, for example, normal temperature drying, hot air drying, reduced pressure drying, etc., as long as the method can make the liquid absorption performance of the color change indicator higher. It is not limited. Force When using a dye that is unstable in the state, the discoloration due to decomposition of the dye is accelerated by heat, and therefore, a method of drying at a lower temperature and a method capable of ensuring the color tone of the dye is necessary. As an example of satisfying the above conditions, the freeze drying method is exemplified as a particularly preferable drying method.
- composition of the dye and Z or the dye carrier is a combination of one of each of the above component variations, or one of the two selected for the other, in order to make the most of each feature. Any form such as a combination selected above or a combination selected two or more types may be adopted.
- the color change indicator 1 is incorporated in, for example, a cylindrical container to constitute a catheter position confirming portion, and the catheter position confirming member is a medical force taper or a member connected to the catheter.
- the catheter position confirming member is a medical force taper or a member connected to the catheter.
- it is used by being connected to or incorporated in a connection tube, but when causing a color change due to contact with a body fluid, it remains in the aforementioned connected or incorporated state without any extra action other than a series of actions.
- the color change indicator according to the present invention is usually incorporated in a container-like member and is attached to the catheter member.
- the color change indicator is kneaded into the force-tail manufacturing material. It may be used in embodiments that are indented or present on the surface of the catheter.
- an enteral nutrition catheter will be described as a catheter in which a catheter position confirmation member is connected or incorporated.
- the catheter position confirmation member is connected to or incorporated in the catheter (for enteral nutrition)
- it is confirmed that the distal end region of the catheter placed in the body has reached a desired position in the extirpation organ. It is very useful because it is easy, accurate and safe.
- the catheter position confirmation member of the present invention is not limited to enteral nutrition force tapes, but is connected to or incorporated in many conventionally known medical catheters intended to perform various treatments in the body.
- the position of the catheter The catheter can be configured so that its position can be confirmed easily, accurately and safely.
- the catheter position in the present invention refers to a catheter part that needs to be confirmed in the body, and in many cases, the force that points to the position of the distal end of the catheter. It may be the position.
- the catheter tip refers to the catheter end itself inside the living body and the vicinity of the end.
- FIG. 1 shows a syringe 1 as a member for sucking gastric juice, a cylindrical catheter position confirmation member 2 having a color change indicator 2A, and a catheter (for enteral nutrition) 3.
- the insertion operation to reach the distal end 4 of the catheter (for enteral nutrition) 3 into the stomach and the confirmation of the distal end 4 are performed as follows.
- a catheter (for enteral nutrition) 3 is inserted nasally using the marker as an index.
- the gastric juice is aspirated from the catheter tip hole 5 using the suction member syringe 1.
- the gastric fluid passes through the tubular catheter position confirmation member 2, but if the color change of the color change indicator 2A is confirmed at the same time or almost at the same time, it is certain that the aspirated fluid is the gastric fluid. It can be confirmed that the indwelling of the distal end portion 4 of the catheter (for enteral nutrition) 3 has been achieved.
- gastric juice is aspirated, but it is preferable to prevent the inhaled gastric fluid from flowing into the body for safety and health reasons. Therefore, in FIG. 1, a check valve 6 is incorporated in the tubular catheter position confirmation member 2 as a mechanism for preventing re-inflow of gastric juice.
- the gastric juice re-inflow prevention mechanism may be incorporated in the tubular catheter position confirmation member 2 as shown in FIG. 1, or between the catheter connecting portion 8 and the tubular catheter position confirmation member 2 as shown in FIG. It may be provided independently!
- FIG. 3 shows a guide wire-shaped catheter position confirmation member 9 having a color change indicator 91 and a catheter (for enteral nutrition) 3.
- the operation of allowing the distal end portion 4 of the catheter (for enteral nutrition) 3 in this embodiment to reach the stomach and the confirmation of the distal end portion 4 were performed as follows.
- the gas is allowed to reach the stomach as in the first embodiment.
- the color change indicator 91 is protruded from the catheter distal end hole 5 and the guide wire-like catheter position confirmation member proximal portion 92 is pushed in to make contact with the gastric juice.
- the guide wire-like catheter position confirmation member 9 is slowly pulled out, and the color change of the color change indicator 91 is confirmed.
- contact with the gastric juice is ensured, and it can be confirmed that the indwelling of the distal end portion 4 of the catheter (for enteral nutrition) 3 is achieved.
- the method for confirming the catheter position in this embodiment does not require the suction of gastric juice, it can be said that it is a clean method compared to Embodiment 1 and the burden on the patient is further reduced. Further, by selecting a material excellent in function as a guide wire as the main body material of the guide wire-like catheter position confirmation member 9, it is possible to facilitate insertion of the catheter.
- the color change indicators 1 of these catheter position confirmation members are configured to form a structure (easy flow structure and heel) through which body fluid sucked by the hole suction means such as a groove and a defect portion can easily pass. Speak.
- FIG. 4 shows a catheter position confirmation member 2 configured by housing a color change indicator 2A having a groove 22 on one side surface in a cylindrical container 10.
- Body fluid sucked by a suction member for example, a syringe as shown in FIGS. 1 and 2
- the catheter position can be confirmed by the color change of the color change indicator 2A in contact with the body fluid.
- the same effect can be expected if there is a groove on both sides, or if the color change indicator has a cylindrical shape and one or more grooves around it. it can.
- a groove is formed on the inner surface of the cylindrical container. , Even if it is listed.
- FIG. 5 shows the catheter position confirmation member 2 having a plurality of grooves 22 on one side surface of the color change indicator 2A of the catheter position confirmation member 2 of FIG.
- FIG. 5 shows a force indicating a color change indicator 2A having two grooves 22.
- the color change indicator 1 may have two or more grooves formed on its surface. Further, the color change indicator 1 is not only the number of grooves, but also changes the size, shape, etc. of the grooves, thereby changing the body fluid sucked by the suction member I in various manners in the catheter position confirmation member 2. It is possible to pass through. For example, it can be said that body fluid flows into only a specific groove among the plurality of grooves and passes through the catheter position confirmation member 2.
- FIG. 6 shows the groove 22 being large and the entire surface on one side is vacant (Embodiment 5), and FIG. 7 shows the color change indicator 2A partially missing throughout the layer. That is, it shows one that is divided into two or more (Embodiment 6).
- Fig. 7 shows a typical example with one rupture 23 in the center. Any color change indicator shape can solve the problem.
- FIG. 8 shows a part where the liquid easily passes through at least a part of the color change indicator 2A, for example, a part having a large porous structure 24, instead of the body fluid passing part such as the groove and the defect part. (Embodiment 7).
- FIG. 9 shows a feeding catheter 3 having a button-shaped position confirmation member 21 and a connection portion 31 to which the button-shaped position confirmation member 21 is connected on its side wall.
- the feeding catheter 3 and the button-shaped position confirmation which are formed of an elastic septum (partition wall) 32 having a slit on the side wall of the feeding catheter 3 and have a connecting portion to which the button-shaped position confirmation member 21 can be inserted and removed. Member 21 is shown.
- the button-shaped position confirmation member 21 is provided with a color change indicator 2A in a button-shaped container having a leg 21C. It is housed and configured.
- FIG. 9 (a) shows the state before the button-shaped position confirmation member 21 is connected to the connection part 31, and FIG. 9 (b) shows the button-shaped position confirmation member 21 connected to the connection part 31. The state after doing.
- the button-shaped position confirmation member 21 can be easily connected to and detached from the connection portion 31, so that the position confirmation can be easily performed a plurality of times.
- the connection portion 31 constituted by the elastic septum (partition wall) 32 is formed in the nutritional strength tester 3, and the connection site 31 is connected to the nutritional strength tester 3 (connection tube ( It may be formed on the side wall (not shown).
- the button-shaped position confirmation member 21 in FIG. 10 is a hollow container-like structure having a leg portion 2C that is inserted into and grasped at a connection site of the member.
- the button shape position confirmation member 21 is provided with a hole 26 for venting air, and the hollow portion thereof is filled with a color change indicator material 2A.
- the size of the hole 26 is not particularly limited, but it is preferable that the hole 26 does not deviate when the body fluid is introduced into the hollow portion.
- the size and shape of the indicator material 21 are not particularly limited, but those having a size and shape that do not deviate from the hole 26 during introduction and discharge of body fluid are desirable.
- the shape and Z or size of the button shape position confirmation member need not be limited to those shown in the drawings as long as they have similar functions.
- FIG. 11 shows a case where a hydrophobic porous filter 27 is attached to the air vent hole 26 of the button-shaped position confirmation member 21 of FIG.
- a hydrophobic porous filter 27 is attached to the air vent hole 26 of the button-shaped position confirmation member 21 of FIG.
- the button-shaped position confirmation member 21 shown in FIG. 10 when body fluid is introduced more than the volume of the hollow part, part of the body fluid leaks from the air vent hole 26, which may cause problems in safety and health.
- air can be easily passed through the air vent hole 26, but liquid such as water cannot be passed. The leakage of bodily fluid from the hole 26 of this was prevented.
- FIG. 12 shows the air vent hole 26 of FIG. Since the button shape position confirmation member 21 shown in FIGS. 10 and 11 has the air vent hole 26, body fluid such as gastric juice cannot be sucked in the state where the member is attached. In order to impregnate the body fluid, a complicated operation is required in which the body fluid is sucked with a syringe or the like, the button-shaped position confirmation member 21 is attached, and the body fluid is introduced into the position confirmation member. In order to simplify these operations, the check valve 28 is attached to the air vent hole in the present embodiment. By providing this check valve 28, body fluid can be sucked not only before but also after the button-shaped position confirmation member 21 is mounted, and the operation can be simplified.
- FIG. 13 shows a connection tube 101 having a syringe 1, a position confirmation member 21, and a connection part 31 of the button-shaped position confirmation member 21 for connecting the syringe 1 and the nutrition catheter 3 (not shown). Since the connection tube 101 is further provided with a check valve 28 on the nutrition catheter 3 side of the connection part 31 of the button-shaped position confirmation member 21, the check valve 28 and the button-shaped catheter position confirmation member By the action of the check valve 28 provided on the body 21, the body fluid sucked into the syringe 1 can be impregnated inside the button-shaped position confirmation member 21 that does not return the fluid to the catheter side.
- FIG. 14 shows an example of a connecting member (connector) installed between a catheter, for example, a feeding catheter and a connecting tube.
- the connector 1 is configured to have a connection position 31 of a catheter position confirmation member and a male connector 33 and a female connector 34 before and after the connection portion 31, and the connection position 31 of the catheter position confirmation member is Since it is composed of a septum (elastic partition) 32 having a slit and a Z or hole 32A, the leg portion 2C of the button-shaped position confirmation member 21 can be inserted and removed multiple times.
- FIG. 15 shows an example in which the joining member 29 shown in FIG. 14 further has a check valve 28. This is a configuration in which an acupuncture mechanism is added to prevent the inhaled gastric fluid and other body fluids from flowing back into the patient.
- Figure 16 shows that the position of the catheter tip can be confirmed multiple times using the catheter position confirmation member. It shows an example of a configuration that can be made. This embodiment can be used as a part of a nutritional catheter or as a nutrient catheter joining member. The configuration of this example can be roughly divided into two parts. A portion where the color change indicator material 2A is introduced and discharged while maintaining airtightness in the catheter (hereinafter referred to as airtight portion 36), and a portion where a plurality of the indicator materials can be stored in an airtight state (hereinafter referred to as storage portion 37). Divided).
- a mechanism for introducing and discharging the position confirmation member while maintaining airtightness can be realized by the connecting portion 31 having a septum 32 (elastic partition wall) structure on both opposite sides of the catheter 3.
- a septum 32 (neutral septum) on the side of introducing the color change indicator material 2A of the catheter 3 is attached to the catheter 3 by an adapter 35.
- the storage section 36 has a structure in which the indicator material 2A is connected to each other with a thread or the like, and the indicator material 2A can be pulled out continuously by pulling one end. The distance between the indicator materials 2A is adjusted according to the distance of the opposing septum 32 (elastic partition).
- the member for connecting the color change indicator material 2A may be a material other than a thread, or a tube having a hole at an appropriate portion, as long as the purpose is achieved. (a) shows the state before the color change indicator material 2A is introduced into the catheter while keeping airtightness in the catheter, and (b) shows the color change indicator material 2A while keeping airtightness in the force tail. The state where is introduced.
- the catheter position confirmation member in FIG. 17 is configured by the presence of an indicator material 2A in a small-diameter cylinder tip 11 of a syringe 38 composed of a body fluid suction member, eg, a piston and cylinder for gastric fluid suction. Is.
- a catheter for example, a nutritional catheter is connected to the cylinder tip 11 of the syringe 38.
- the shape of the indicator material 2A is not limited, it is desirable that the body fluid suction member is also sized and shaped so that it does not easily flow out when body fluid is introduced and discharged.
- the catheter position confirmation member of this embodiment can confirm the position of the catheter only once, but its configuration is simple.
- the catheter position confirmation member shown in FIG. 18 has an indicator material 2A (not shown) in the inside thereof, and a bellows type body fluid capable of sucking a body fluid, for example, gastric fluid, in the inside thereof.
- the suction member 39 is used.
- a check valve 28 that can prevent body fluid inhaled into the bellows-type body fluid suction member 39, for example, gastric fluid, from returning to the catheter side. It is preferable to provide it.
- the check valve 28 can also be provided on the bellows type body fluid suction member 39 or the catheter 3. Further, in addition to the check valve 28 on the catheter side, the catheter position confirmation member in FIG.
- FIG. 18 discharges air from inside the bellows-type body fluid suction member 39 to the end opposite to the catheter connection side.
- a check valve that prevents air from the outside from being introduced into the bellows-type body fluid suction member 39.
- FIG. 18 (1) shows the configuration before use of the present embodiment, and (2) shows that the bellows portion of the bellows type body fluid suction member 39 is contracted, and the air inside the bellows portion is moved outside in the direction of the arrow.
- (3) shows the configuration in the state of draining, and (3) expands the bellows part of the bellows type body fluid suction member 39 from the state of (2), and the body fluid, for example, gastric fluid from the catheter 3 to the bellows part in the direction of the arrow.
- the position of the catheter can be confirmed by storing and visually recognizing the color change of the indicator material 2A due to the body fluid.
- the catheter position confirmation member of the present embodiment can confirm the position of the catheter only once as in the case of FIG. 17, but its configuration is simple.
- the catheter position confirmation member of Embodiments 14 and 15 has the indicator material 2A present in the body fluid suction arch I member, but the indicator material 2A is formed on the surface of the catheter position confirmation member. It may also be manufactured from a material mixed with indicator material 2A. Further, the suction member constituting the catheter position confirmation member is not limited to the syringe 38 or the bellows type body fluid absorption arch I member 39, but may be, for example, a balloon shape.
- FIG. 1 is a view showing a structure in which a catheter position confirmation member 3 is connected to a catheter (for enteral nutrition) 3.
- FIG. 2 is a view showing a structure in which a check valve 6 is connected between a catheter (for enteral nutrition) 3 and a tubular catheter position confirmation member 2 in FIG.
- ⁇ 4 A diagram showing the color change indicator 2 having a groove on one surface.
- FIG. 5 is a diagram showing the color change indicator 2 having a plurality of grooves on one surface.
- FIG. 6 is a diagram showing the color change indicator 2 in which the entire surface is a groove.
- FIG. 7 is a diagram showing a color change indicator 2 having an all-layer defect at the center.
- FIG. 8 is a diagram showing a color change indicator 2 having a porous liquid-passable portion.
- FIG. 9 is a diagram showing a catheter having a button-shaped catheter position confirmation member 21 and a joining portion 31 of a septum structure 32 in which the position confirmation member 21 can be inserted and removed a plurality of times.
- FIG. 10 is a schematic view showing a button-shaped catheter position confirmation member 21 that can be easily attached and detached.
- FIG. 11 is a schematic view of a hole portion 26 having a hydrophobic porous filter 27 in FIG.
- FIG. 12 is a schematic view showing a button-shaped catheter position confirmation member 21 having a check valve 28 in the hole portion 26 in FIG.
- FIG. 13 is an explanatory diagram of a connection tube 10 having a button-shaped catheter position confirmation member 21, a connection part 31 having a septum structure into which the confirmation member 21 is inserted and grasped, and a check valve 28.
- 15 is a schematic view showing another example of a connector member having a check valve on the male member 33 of the connector of FIG.
- FIG. 16 is a view showing a catheter having a septum (elastic partition) 32 and an adapter 35 for connecting a storage portion 37 storing a plurality of indicator members 2B via the septum (elastic partition) 32.
- FIG. 18 Categorical body fluid suction arch I member 39 with a color change indicator 2 present It is a figure which shows an example of the member for tell position confirmation.
- Agar (5 g each) and various dyes shown in Table 1 were taken in a beaker, RO water (95 mL each) was added, and the mixture was heated and stirred. This was then spread thinly on a tray and left in the refrigerator for 2 hours. After a suitable cut was made, the color change indicator (dried product) was obtained by drying for 24 hours in a freeze dryer. Furthermore, these color change indicators were brought into contact with artificial gastric juice (colorless and transparent, approximately pH 1) prepared by the method described in the Japanese Pharmacopoeia General Test Method 58, disintegration test method. As shown in Table 1, each showed a good color change. In Table 1, the amount of each dye used indicates the amount of each dye added to 95 mL of RO water.
- Example 1 instead of thinly spreading the heat-stirred material on the tray, it is filled into a cylindrical material that can be connected to a catheter and dried in a freeze dryer for 24 hours to incorporate a color change indicator. A tubular catheter position confirmation member was prepared. The color of the color change indicator after drying was the same as that shown in Table 1. Using this, the structure shown in FIG. 1 was obtained. Further, by using the construct and confirming that the color change of the color change indicator has occurred by insertion into the stomach and gastric juice suction by the method described in Embodiment 1, the distal end of the catheter (for enteral nutrition) is confirmed. Was confirmed to reach the stomach.
- Example 3 Example 3
- a dried color change indicator produced in the same manner as in Example 1 was connected to the tip of the guide wire to produce a guide wire-shaped catheter position confirmation member. Using this, the structure shown in Fig. 3 was obtained. Furthermore, by inserting into the stomach by the method according to Embodiment 2 and confirming that a color change of the color change indicator has occurred due to contact with gastric juice using the construct, the tip of the catheter (for enteral nutrition) It was confirmed that the stomach reached the stomach.
- Example 2 after confirming that the catheter (for enteral nutrition) reached the stomach, the cylindrical catheter position confirmation member was replaced and connected to a new one. (For enteral nutrition) inserted into the duodenum or jejunum (again, until the duodenum or jejunum A marker indicating the approximate distance was used as an index. ) 0 At this point, check as in Embodiment 1 to confirm that the color change of the color change indicator does not occur or that a color change different from the color change due to contact with gastric juice occurs. As a result, it was confirmed that the distal end of the catheter (for enteral nutrition) reached within the duodenum or jejunum.
- Example 3 after confirming that the catheter (for enteral nutrition) reached the stomach, the newly prepared guide wire-shaped catheter position confirmation member was slowly inserted into the catheter (for enteral nutrition). ) was reinserted. After confirming that the guide wire-shaped catheter position confirmation member reached the tip of the catheter (for enteral nutrition), a catheter (for enteral nutrition) was further inserted into the duodenum or jejunum.
- a catheter position confirmation member capable of more simply, reliably and safely confirming the position of a medical catheter in the body, particularly the distal end region of the catheter, and a catheter using the same. This makes it possible to treat medical catheters or perform examinations more easily, reliably and safely.
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- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
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- Materials For Medical Uses (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05765180A EP1774985A4 (en) | 2004-06-30 | 2005-06-29 | CATHETER POSITION CHECKING ELEMENT HAVING A COLOR CHANGING INDICATOR AND CATHETER HAVING THE CATHETER POSITION CHECKING ELEMENT |
US11/630,670 US20090198182A1 (en) | 2004-06-30 | 2005-06-29 | Member For Catheter's Position Verification Having Color Change Indicator And Catheter Having The Member For Catheter's Position Verification |
JP2006528772A JP4605159B2 (ja) | 2004-06-30 | 2005-06-29 | 色変化インジケーターを有するカテーテル位置確認用部材と該カテーテル位置確認用部材を有するカテーテル |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-193069 | 2004-06-30 | ||
JP2004193069 | 2004-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003960A1 true WO2006003960A1 (ja) | 2006-01-12 |
Family
ID=35782768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/012004 WO2006003960A1 (ja) | 2004-06-30 | 2005-06-29 | 色変化インジケーターを有するカテーテル位置確認用部材と該カテーテル位置確認用部材を有するカテーテル |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090198182A1 (ja) |
EP (1) | EP1774985A4 (ja) |
JP (1) | JP4605159B2 (ja) |
WO (1) | WO2006003960A1 (ja) |
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JP2009195436A (ja) * | 2008-02-21 | 2009-09-03 | Jms Co Ltd | 検査器具 |
EP2168558A1 (en) * | 2008-09-30 | 2010-03-31 | Tyco Healthcare Group LP | Gastric insertion confirmation device |
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JP2017121974A (ja) * | 2017-04-05 | 2017-07-13 | 加賀ワークス株式会社 | カートリッジ充填方法 |
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Also Published As
Publication number | Publication date |
---|---|
EP1774985A1 (en) | 2007-04-18 |
EP1774985A4 (en) | 2009-06-03 |
US20090198182A1 (en) | 2009-08-06 |
JP4605159B2 (ja) | 2011-01-05 |
JPWO2006003960A1 (ja) | 2008-04-17 |
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