JP2006314479A - Rectum catheter apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rectum catheter apparatus for medical purpose by which objects to be evacuated such as gas, feces or the like in the rectum can be reliably and safely discharged from the body and chemical is injected into the rectum. <P>SOLUTION: The rectum catheter apparatus comprises a rectum insertion body 10 which is a part to be inserted into the rectum and has an opening 19 for receiving gas or objects to be evacuated at its end, a balloon 20 which is formed for enveloping its periphery except the opening 19, a rectum contact part 11 for keeping the rectum open, a temporary reservoir 12 of gas or excrement which is continued from it, a pressure-resistant reservoir volume part 21 which is arranged in it, a conduit opening and closing part 13 for opening and closing the conduit which is continued from the temporary reservoir 12 and a connection hose 14 which is continued from it. It further has a chemical injection tube 15 which passes through the inside of the rectum contact part 11 and the rectum insertion body 10 and whose end is lead out in the proximity and an air supply and discharge tube 17 which passes through the inside of the rectum contact part 11 and the rectum insertion body 10 and whose end is lead out into the balloon 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a medical rectal catheter device that can discharge excretion objects such as gas in the rectum and feces out of the body and inject a drug solution into the rectum.

  How to treat defecation, such as a bedridden patient, a patient in a coma, or a patient who cannot sufficiently control defecation on their own will, is a very important issue. For example, since patients who have undergone surgery on the rectum cannot defecate by themselves, defecation management affects the outcome of disease treatment itself. In addition, burn patients who have burns throughout their body are easily infected with pathogenic bacteria, and may be infected with pathogenic bacteria through skin contact with their own defecation, thereby losing their lives.

  However, it takes a lot of labor to handle the defecation of a serious patient, and it is difficult to properly manage the defecation. For this reason, a variety of colostomy devices and catheter devices have been developed that can be used by defecation treatment devices, patients who have operated on the small intestine or rectum, or patients who cannot control defecation on their own will. Techniques related to such devices are described.

JP 2001-170164 A (summary, claim 2)

Japanese translation of PCT publication No. 2004-509707 (summary, FIG. 1)

JP 10-234854 A (summary)

  Patent Document 1 is a technique related to a manual defecation device provided with a scraping unit that scrapes feces at the tip, and the device according to this technique can be used inexpensively and easily and can be used for bedridden elderly people and the like.

  Patent Document 2 discloses an outer balloon (4) formed in a ring shape, an inner balloon (6) disposed in the outer balloon (4), a support tube between the outer balloon and the inner balloon, a drainage hose ( 8) and a technique relating to a colostomy device having a fixing aid on the outer side surface of the drainage hose (8). In the colostomy device according to this technique, the inner and outer balloons (6, 4) are inserted into the rectum and are in close contact with the rectal wall, and feces in the rectum are excreted through the waste liquid hose (8). become. According to this technique, the outer balloon (4) enhances airtightness with the wall of the intestinal tract, thereby preventing leakage of liquid and gas, and preventing the fixation aid and the inner balloon from being pushed into the upper part of the rectum.

  Patent Document 3 is a technique related to a rectal catheter for injecting a contrast medium such as barium or air into the rectum, large intestine, and colon. In this document, a contrast medium is provided inside a catheter body in which a balloon is provided on the outer peripheral surface of the distal end. The injection path, the air injection path, the excretion path, and the balloon air supply path are provided separately, and a protrusion fitted into the balloon air supply path is provided at the rear of the tip cap attached to the distal end of the catheter body. There has been proposed a rectal catheter in which a protrusion is fitted into a distal end portion of a balloon air supply path and a distal end cap is attached to the catheter body. According to this technique, the number of manufacturing steps can be reduced, and the cost of manufacturing can be reduced.

  However, since the device described in Patent Document 1 is a device that excretes hard stool that stays in the intestine, it is not suitable as a device that excretes diarrhea or intestinal gas that occurs unexpectedly outside the intestine. Therefore, it cannot be used as a therapeutic catheter. In addition, the device described in Patent Document 2 allows the external balloon to be inflated so as to adhere to the intestinal tract wall and prevent leakage of the intestinal contents to the outside of the intestine. Although it is useful for management, it cannot be used as a therapeutic catheter for injecting medicinal liquids, and it does not have sufficient consideration for appropriately responding to the occurrence of unpredictable diarrhea and intestinal gas. In addition, the device described in Patent Document 3 has not been sufficiently considered to appropriately cope with unpredictable diarrhea and intestinal gas generation.

  By the way, colostomy devices, etc. have an opening / closing mechanism for controlling defecation from the outside. Normally, the colostomy is kept closed during normal defecation and the colostomy is opened when defecation is performed. However, it was unexpectedly difficult for a person other than the person (such as a doctor or nurse) to open the colostomy device at an appropriate timing. I learned that there were many accidents in which the patient was harmed because the anus was not opened in a timely manner. I also learned that nurses sometimes forgot to open the colostomy device.

  The reason why it is not easy for nurses and the like to use the colostomy properly is that the amount and timing of intestinal gas etc. varies depending on the patient's physical condition and condition, so it is necessary to adjust to the patient's condition. This is because, for example, a patient immediately after surgery for the intestinal tract may cause intestinal obstruction due to a small amount of gas accumulated in the intestine and lose its life. Therefore, for a patient wearing a colostomy device or the like, the nurse must appropriately manage the opening and closing of the colostomy device, etc., but it is difficult to perform this management properly as described above. Even when not wearing the intestine, patients who have just been operated on the intestinal tract and those whose physical strength is extremely weak have weak intestinal contraction force, and in the sleeping state, the force in the direction of closing the anus by the buttocks acts, The patient may not be able to excrete the gas generated in the intestine by himself.

  For this reason, there is a demand for a prosthetic device having excellent safety that can be used by such serious patients.

  The present invention has been made in view of the above-described situation, and is capable of injecting a chemical solution into the intestine, and reliably and promptly injecting an excretion object (medical solution, feces, intestinal gas, etc.) after injection into the intestine. An object of the present invention is to provide an excellent rectal catheter device that can be excreted easily.

The present invention for solving the above problems is a rectal catheter device capable of injecting a drug solution into the intestine and excreting intestinal gas and excretion object outside the body,
A rectal insertion main body part that is inserted into the rectum and has an opening for receiving gas and excretion objects at the tip, and is formed so as to wrap around the rectal insertion main body part excluding the opening of the rectal insertion main body part An inflatable / shrinkable balloon, an anal contact part that opens the anus that is a part following the rectal insertion main body part, and a gas and excretion discharged from the rectum that is a part that follows the anal contact part. A temporary reservoir, a flow passage opening and closing portion that opens and closes a flow passage through which gas or excrement passes, and a connection hose portion that follows the flow passage opening and closing portion; A drug solution injection tube that passes through the inside of the anus contact portion and the rectal insertion main body portion, the tip of which is led out near the opening of the rectal insertion main body portion, and passes through the inside of the anal contact portion and the rectal insertion main body portion In the balloon An air supply and discharge tube issued, rectal catheter device having a.

  In the rectal catheter device having this configuration, after the rectal insertion main body portion is inserted into the rectum, air can be inflated by inflating and contracting the balloon by supplying air with the air supply / discharge tube. Since the head closely contacts the rectal wall, leakage of the excretion object is prevented, and the excretion object is guided into the flow path of the rectal catheter device from the opening of the rectal insertion main body. Thus, this device has an anus contact portion that keeps the anus open. When the rectal insertion main body portion is inserted into the rectum, the anus is always open, Since the temporary reservoir is disposed downstream, the gas in the rectum and the object to be excreted are naturally guided into the catheter through the opening and guided to the temporary reservoir. Therefore, it is possible to reliably prevent medical accidents due to gas and excretion objects remaining in the rectum.

  In addition, the rectal catheter device having this configuration can inject a chemical solution into the rectum via a chemical solution injection tube, and can keep the chemical solution in the intestine if the flow path opening / closing part is closed prior to the injection. it can. On the other hand, the injected drug solution and the gas and excrement stored in the temporary reservoir are opened to the end of the connection hose by opening the channel opening / closing section provided downstream of the temporary reservoir. Can be discarded. Further, the rectal catheter device can be easily removed from the rectum by drawing air from the balloon through the air supply / discharge tube.

  In the present invention, it is preferable that at least the outer surface of the anus contact portion has an uneven shape.

  When the outer surface of the anus contact portion is uneven, the anal sphincter preferably comes into contact with the uneven shape, so that the vertical displacement of the catheter is prevented.

  Moreover, in the said invention, the said rectal insertion main-body part and an anal contact part can be comprised with a bellows-shaped cylinder.

  The rectal catheter device is required to always have a flow path in order to circulate the excretion object, and for that purpose, it is desired that it does not bend or collapse, but is a bellows-shaped cylinder. Thus, both flexibility and pressure resistance (resistance to external pressing force) can be improved without causing unnecessary weight increase. Further, the irregularities of the bellows on the outer surface abut on the anal sphincter and function as a stopper that prevents the catheter from being displaced.

  Moreover, in the said invention, the said rectal insertion main-body part and an anus contact part can be comprised with the cylinder by which the helix was formed in the outer surface.

  With this configuration, the spiral formed on the outer surface enhances the pressure resistance of the cylinder, so that it can be lightweight, flexible and pressure resistant, and the spiral contacts the anal sphincter and the catheter is misaligned. To prevent.

  In the present invention, the inner diameter of the temporary reservoir is larger than the inner diameter of the rectal insertion main body and the inner pressure of the temporary reservoir is 1 atm or less. It is composed of various materials.

  Here, the inner diameter means an inner diameter having the largest linear distance. With this configuration, the storage capacity of the temporary storage section increases, so the function of temporarily storing gas and excrement is improved, and it is easy to know that gas has accumulated due to the swelling of the temporary storage section. it can. Therefore, the safety for the patient is remarkably improved. Note that gas or the like accumulated in the temporary reservoir can be removed by opening the flow path opening / closing portion and flowing downstream, whereby the capacity of the temporary reservoir can be updated again to a sufficient capacity.

  Moreover, in the said invention, it can be set as the structure further equipped with a pressure | voltage resistant storage capacity | capacitance part inside the said temporary storage part.

  If the pressure-reservoir capacity part is provided in a temporary reservoir part made of a flexible material that is in a deflated state when the pressure is 1 atm or less, the pressure-reservoir can be maintained even when pressure is applied to the temporary reservoir part. A certain volume of gas or the like can be stored in the capacity section. Therefore, it is possible to prevent an accident caused by the temporary storage portion not functioning properly, thereby further improving the safety of the rectal catheter device.

  Further, in the present invention, a through hole or a groove along the cylindrical axis direction is provided in a convex portion protruding inward of the bellows-shaped cylinder, and the chemical injection tube and the air supply / discharge tube have the through hole. It can be set as the street or the structure fixed to the said groove | channel and guide | induced to the cylinder axial direction.

  With this configuration, the chemical solution injection tube and the air supply / discharge tube can be reliably fixed inside the flow channel without reducing the flow channel volume, so that the tube does not interfere with the passage of excrement.

  Moreover, in the said invention, it can be set as the structure further equipped with the compression band which presses the circumference | surroundings of the said temporary reservoir part from the outside, and reduces the internal volume of a temporary reservoir part.

  With this configuration, the volume of the temporary reservoir can be reduced by the compression band, so that the channel volume upstream from the channel opening / closing unit is reduced. Therefore, the waste of the chemical solution can be reduced when the chemical solution is injected into the rectum with the flow path opening / closing portion closed.

  According to the present invention, intestinal gas and intestinal excretion objects can be quickly excreted outside the body without being stored in the rectum, and a drug can be injected into the intestine as needed. A rectal catheter device excellent in safety that can be stored is provided. This device can reliably excrete a small amount of gas generated in the intestine without contaminating the surroundings, so it can be extremely healthy especially for patients with general burns, patients who have just operated on the small intestine or rectum, etc. This is useful as a nursing tool for patients with weakness.

The best mode for carrying out the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is a schematic cross-sectional view of the rectal catheter device 1 according to the first embodiment cut in half along the flow path direction. The rectal catheter device 1 according to the first embodiment will be described based on this figure. First, the rectal insertion part 2 which is the main part of this device is composed of a rectal insertion main body 10, an anal contact part 11 following the rectal insertion main body 10, and a balloon 20 formed to cover the peripheral side surface of the rectal insertion main body 10.

  The rectal insertion main body 10 and the anus contact portion 11 are made of a bellows-shaped tube, and have an opening 19 for receiving an excretion object on the distal end side. In this example, the rectal insertion main body portion 10 and the anus contact portion 11 are formed of a bellows-shaped cylinder. The bellows-shaped cylinder has excellent resistance to external pressure and flexibility, and is excellent in compatibility with the intestinal tract and ease of insertion. However, these are not limited to cylinders, and cylinders having an elliptical or polygonal cross-sectional shape can also be used.

  When the outer diameter (the farthest distance diameter) of the bellows cylinder constituting the rectal insertion main body 10 and the anus contact portion 11 is too thick, it is difficult to insert into the rectum and an unnecessary load is applied to the rectum. If it is too thin, the excretion object cannot be excreted promptly. Therefore, the outer diameter of the bellows cylinder is about 10 to 25 mm, preferably about 20 mm.

  The actual thickness of the bellows cylinder is about 0.5 to 1.2 mm, and the apparent thickness of the bellows cylinder (straight line connecting the outer mountain and the top of the inner mountain) and the pitch interval are the rectal diameter and the application target. It is set appropriately considering the compatibility with the anal sphincter. The apparent thickness is usually about 2 to 10 mm, preferably about 5 mm. Further, it is preferable that the top of the mountain is not sharp but rounded. The length of the rectal insertion main body 10 in the direction of the flow path is about 20 to 50 mm, and usually about 32 mm.

  The anus contact portion 11 is a portion that functions to keep the anus open against the anus and against the force of the anal sphincter. In this example, the same bellows cylinder as that of the rectal insertion main body 10 is used in this portion. This is because manufacturing is easy. However, the inner diameter, outer diameter, wall thickness, bellows pitch, and material of the bellows cylinder may be different from those of the rectal insertion main body 10. The anus contact portion 11 has a role of reliably preventing gas from accumulating in the intestine of a serious patient due to a high gas discharge pressure, so that the anus can be resisted against the force of the anal sphincter or the buttocks in the closing direction. Although pressure resistance that can be opened is necessary, a bellows-structured cylinder is suitable in that it is lightweight and has excellent pressure resistance. Further, in the bellows structure, the irregularities of the bellows fit with the anal sphincter and prevent the catheter from shifting up and down. Therefore, the effect that the catheter can be prevented from entering or dropping out is obtained.

  The temporary reservoir 12 following the anus contact portion is a part for temporarily storing gas or excrement guided to the rectal insertion main body. For the purpose of gas reservoir, the inner diameter of the temporary reservoir 12 is preferably larger than the inner diameter of the rectal insertion main body, and more naturally when the internal pressure of the temporary reservoir is 1 atm or less (atmospheric or less). What becomes a deflated state is preferable. Since the volume increases when the gas pressure is applied if the structure naturally swells at 1 atm or less, the gas discharged by the patient whose gas discharge pressure is extremely weak can be stored in the temporary reservoir 12. . In addition, if it comprises a thin and flexible material, since it will dent by its own weight when there is no internal / external pressure difference, the structure which dents when an internal pressure is 1 atmosphere or less can be implement | achieved easily.

  The capacity of the temporary reservoir 12 is about 20 to 120 ml, preferably about 30 to 70 ml. The main application object of the present invention is a patient immediately after surgery for the intestine or a patient with general burns. The intestinal gas generation amount of such a patient is several hundred ml per day, which is one third of the day. The amount of gas generated in (8 hours) is about 30 to 70 ml. Therefore, when considering the daily rhythm of the nurse, if a gas volume of 30 ml to 70 ml can be stored, medical accidents such as intestinal obstruction due to gas intestinal retention can be greatly reduced. In addition, the temporary storage part 12 is made into the state which was dented by hold | suppressing with a hand etc. at the time of a use start. In this way, if gas or excretion objects are generated in the intestinal tract of the patient when the flow path opening / closing part is closed, the temporary reservoir 12 swells, so that the nurse can easily know that. be able to. Therefore, before the temporary storage part 12 becomes full, the flow path opening / closing part can be opened to reset the temporary storage part 12. Thereby, it is possible to reliably prevent medical accidents such as intestinal obstruction caused by retention of gas or the like in the intestine.

  The channel opening / closing part 13 following the temporary reservoir 12 is a part for opening and closing the channel in the catheter. The channel opening / closing section 13 may be of any type as long as it is an opening / closing means capable of controlling the channel opening / closing by the operator's intention. For example, a method of pressing the tube from the outside and closing the channel (method of closing with a fastener) ), A system in which an inflatable / shrinkable air valve is arranged in the flow path, or a system in which the air valve is blocked by a baffle plate may be used.

  The extension hose part 14 following the flow path opening / closing part 13 is a passage for guiding the gas and excrement flowing from the upstream to the outside of the rectal catheter device when the flow path opening / closing part 13 is in an open state. is there. The extension hose portion 14 has an inner diameter of about 1.5 to 30 mm, a thickness of about 0.5 to 1.5 mm, and is preferably made of a flexible material. Further, it is preferable that the end of the extension hose portion 14 is provided with an attachment that can be easily connected to a waste liquid tank or the like. However, there are no particular restrictions on its shape and function.

  Next, the balloon 20, the chemical solution injection tube 15, and the air supply / discharge tube 17 will be described.

  The balloon 20 is an air bag that encloses the peripheral side surface except for the opening 17 of the rectal insertion main body 10, and swells when the air is blown into the inside thereof so as to be in close contact with the rectal wall, and from the rectum to the outside of the body. Prevent liquids and gases from leaking. The balloon 20 is preferably made of a flexible material that is deflated to the extent that it is in contact with the side surface of the rectal insertion main body 10 in a state where air is not blown into the inside thereof. Sometimes the size is the same as or slightly larger than the rectal diameter. For example, the diameter is 30 to 60 mm, usually about 50 mm, the flow direction length is 2.5 to 3.5 mm, and the internal volume is about 45 ± 5 ml. These values should be appropriately determined according to the application target. For example, a large size is used for an adult boy and a small size is used for a child.

  The medicinal solution injection tube 15 is a tube for injecting a medicinal solution (for example, an enteric agent, an anticancer agent, etc.) into the rectum. The distal end of the tube is located near the opening 19 of the rectal insertion main body 10 through the interior of the temporary reservoir 12, the anal contact part 11, and the rectal insertion main body 10, or on the rectal side from the opening 19. It arrange | positions so that it may protrude. On the other hand, the rear end 16 of the tube can be connected to a chemical solution injection means such as a syringe. In a preferred embodiment, the rear end 16 is provided with a valve such as a backflow prevention valve.

  Here, when the chemical solution is injected into the intestinal tract through the chemical solution injection tube 15 and the chemical solution is to be retained in the intestinal tract, the chemical solution is injected with the flow path opening / closing portion 13 closed. However, in order to securely retain the drug solution in the intestinal tract, it is necessary to inject an extra volume of the amount stored in the rectal insertion main body 10, the anal contact part 11, and the temporary storage part 12. In this case, if the butt is turned upward and the rectal catheter device is placed above the butt, the amount of extra injection can be reduced. However, as a means for easily reducing this volume, a compression band ( (Not shown) can be used. The compression band is an instrument that can be attached to the temporary reservoir 12 and presses the periphery of the temporary reservoir 12 from the outside to reduce the internal volume of the temporary reservoir. This can be constituted by a shrinkable rubber band provided with a fastener made of a loop that can be easily engaged and disengaged at both ends, for example. With such a shrinkable band with a fastener, compression and decompression can be easily performed.

  The air supply / discharge tube 17 is a tube for supplying air into the balloon 20 or discharging the air in the balloon 17. This tube also passes through the inside of the temporary reservoir 12, the anus contact portion 11, and the rectal insertion main body 10, and the tip thereof is guided into the balloon 17, similarly to the drug solution injection tube 15. The rear end 18 of the tube can be connected to air supply / discharge means such as a syringe. In a preferred embodiment, an open / close valve is attached to the rear end 16. Note that the balloon system can be easily closed by bending the tube tip and holding the clip with a clip in a state in which air is introduced into the balloon with a syringe, for example. Therefore, the on-off valve is not always necessary.

  Next, a method for fixing the chemical solution injection tube 15 and the air supply / discharge tube 17 will be described. In the example shown in FIG. 1, the chemical solution injection tube 15 and the air supply / discharge tube 17 are bonded and fixed along the inner wall surface of the bellows-shaped cylinder. This method is excellent in that it is simple, but a fixing method other than this bonding method may be used. Examples of other fixing methods are shown in FIGS. 2 (a) and 2 (b) and FIGS. 3 (a) and 3 (b). FIG. 2 shows that the inner bellows of the bellows are shaved along the direction of the opening 17 to form a groove along the axial direction (discontinuous groove; see FIG. 2b). Adhere with an adhesive such as silicone resin. Since this method is a method of embedding a tube in the bellows structure, the flow path is not narrowed. Further, when the groove has a depth that reaches the valley on the outer side of the bellows, it can be easily fixed (and sealed) by applying an adhesive from the outside.

  FIG. 3 shows a method in which a hole communicating in the axial direction is formed in the middle of the mountain inside the bellows, and the chemical solution injection tube 15 is passed through this hole. In this method, it is necessary to fill the gap between the tube and the hole with silicone resin or other adhesive so that the balloon air does not leak. However, according to this method, the tube can be securely fixed, and the tube can be excreted. Does not obstruct the passage of things. 3a is a perspective view of the rectal insertion portion 2, and FIG. 3b is a schematic sectional view.

  2 and 3, the chemical solution injection tube 15 and the air supply / discharge tube 17 may be passed together through one row of hole groups or one row of groove groups, and two rows of hole groups or groove groups may be provided. A method may be used in which one tube is passed through each hole row.

  The constituent material of each part will be further described. The rectal insertion main body part 10, the balloon 20, and the anus contact part 11 are made of a flexible material that does not adversely affect the living body and does not damage the living body. For this purpose, it is preferable to use silicon resin.

(Embodiment 2)
In the rectal catheter device according to the second embodiment, as shown in FIG. 4, the pressure-resistant reservoir capacity portion 21 continuing to the anal contact portion 11 is extended to the middle of the temporary reservoir portion, and the bellows pitch is anus contacted. The other part is wider and the other part is narrower than this. Other matters are the same as those in the first embodiment.

  In this structure, the bellows pitch of the part is made larger than that of the rectal insertion main body part in order to easily fit the anal contact part to the anal sphincter. The reason why the pressure-resistant reservoir capacity portion 21 in which the bellows cylinder is extended to the temporary reservoir portion is to ensure that the reservoir capacity can be secured in the temporary reservoir portion even when pressure is applied from the outside. . The pressure resistance of the pressure-resisting reservoir capacity portion 21 may be as long as the shape does not deform against a load of 2 kg / ml to 20 kg / ml. With this structure, the reliability and safety of the rectal catheter device are significantly increased.

  It is important that the anus contact portion has a bellows pitch that is easy to fit to the anal sphincter, but this condition varies depending on the size of the application target person. Therefore, as long as the bellows pitch is easy to fit to the anal sphincter, it is of course possible that the anus contact portion is narrower than the other portions.

(Embodiment 3)
As shown in FIG. 5, the rectal catheter device according to the third embodiment is characterized in that the bellows cylinder (pressure-resisting reservoir capacity portion 21) extended to the temporary reservoir is widened. Other items are configured in the same manner as in the second embodiment.

  With this structure, since the pressure-resistant reservoir capacity that can be secured in the temporary reservoir is further increased, the reliability and safety of the rectal catheter device is further enhanced.

(Embodiment 4)
In the rectal catheter device according to the third embodiment, as shown in FIGS. 6 and 7, the rectal insertion portion 2 is formed of a cylinder having a spiral formed on the outer surface. Other matters are the same as those in the first embodiment.

  This structure is advantageous in that it has excellent pressure resistance and is easy to manufacture. The pitch interval of the spiral is appropriately set in consideration of pressure resistance and flexibility.

(Embodiment 5)
In the rectal catheter device according to the third embodiment, as shown in FIG. 8, the rectal insertion portion 2 is configured by a cylinder having an uneven shape formed on the outer surface. Other matters are the same as those in the first embodiment.

  This structure has the advantages that it has excellent pressure resistance, is easy to manufacture, and that it is easy to enhance the fit with the anal sphincter and prevent slippage. The pitch interval of the concavo-convex shape is appropriately set in consideration of the pressure resistance and the above fit property.

  As described above, according to the present invention, the intestinal gas and the excretion object of a serious patient can be reliably guided outside the body, and the safety of injecting a drug solution into the intestine is excellent. A medical rectal catheter device can be provided. Therefore, the industrial applicability is great.

1 is a schematic cross-sectional view for explaining a rectal catheter device according to Example 1. FIG. It is a figure which shows the other aspect of the tube fixation system of a rectal catheter apparatus, FIG.2 (a) is a cross-sectional schematic diagram except a balloon, FIG.2 (b) is the top view. It is a figure which shows the further aspect of the tube fixation system of a rectal catheter apparatus, FIG. 3 (a) is a perspective view except a balloon, FIG.3 (b) is a cross-sectional schematic diagram containing a balloon. 6 is a schematic cross-sectional view for explaining a rectal catheter device according to Example 2. FIG. FIG. 6 is a schematic cross-sectional view for explaining a rectal catheter device according to Example 3. FIG. 6 is a schematic cross-sectional view for explaining a rectal catheter device according to Example 4; It is a perspective view explaining the shape of the insertion main-body part of the rectal catheter apparatus concerning Example 4. FIG. FIG. 10 is a schematic cross-sectional view for explaining a rectal catheter device according to Example 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rectal catheter apparatus 2 Rectal insertion part 10 Rectal insertion main-body part 11 Anal contact part 12 Temporary storage part 13 Flow path opening / closing part 14 Extension hose part 15 Chemical solution injection tube 16 Chemical solution injection port 17 Air supply / discharge tube 18 Air supply port 19 Opening 20 Balloon 21 Pressure Reservoir Capacity

Claims (8)

A rectal catheter device capable of injecting medicinal solution into the intestine and excreting intestinal gas and excretion object outside the body,
Rectal insertion main body part having an opening for receiving gas and excretion objects at the tip, which is a part inserted into the rectum,
An inflatable and contractible balloon formed so as to wrap around the rectal insertion main body excluding the opening of the rectal insertion main body;
An anus contact part that is an area that continues to the rectal insertion main body part and opens the anus; and
A temporary reservoir that accumulates gas and excreted matter discharged from the rectum, which is a site following the anus contact portion;
A flow path opening / closing part that opens and closes a flow path through which gas and excrement pass, which is a part following the temporary reservoir,
A connection hose part following the flow path opening and closing part,
Have
Furthermore, the medicinal solution injection tube whose tip passes through the inside of the anus contact part and the rectal insertion main body part and is led out near the opening of the rectal insertion main body part,
An air supply / discharge tube that passes through the inside of the anus contact portion and the rectal insertion main body portion, the tip of which is led into the balloon;
A rectal catheter device. The rectal catheter device according to claim 1,
At least the outer surface of the anus contact portion is uneven.
A rectal catheter device. The rectal catheter device according to claim 1,
The rectal insertion main body part and the anus contact part are formed of a bellows-shaped cylinder,
A rectal catheter device. The rectal catheter device according to claim 1,
The rectal insertion main body part and the anus contact part are composed of a cylinder having a spiral on the outer surface,
A rectal catheter device. The rectal catheter device according to claim 1,
The inner diameter of the temporary reservoir is larger than the inner diameter of the rectal insertion main body, and the inner diameter of the temporary reservoir is made of a flexible material that becomes a sag when the internal pressure is 1 atm or less.
A rectal catheter device. The rectal catheter device according to claim 5,
The rectal catheter device further comprises a pressure-resistant reservoir capacity part inside the temporary reservoir part,
A rectal catheter device. The rectal catheter device according to claim 3,
A through-hole or a groove along the cylinder axis direction is provided in the convex portion protruding inside the bellows-shaped cylinder, and the chemical solution injection tube and the air supply / discharge tube pass through the through-hole or are fixed to the groove. Led in the cylinder axis direction,
A rectal catheter device. The rectal catheter device according to any one of claims 1 to 7,
The rectal catheter device further includes a compression band that presses the periphery of the temporary reservoir from outside to reduce the internal volume of the temporary reservoir.
A rectal catheter device.

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