JP2015181511A - medical drain tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical drain tube in which body fluid is prevented from leaking from outside of a body unintentionally through an external surface of the drain tube, and a detention method of the medical drain tube.SOLUTION: A medical drain tube 1 has a tube body 10 which has tubular shape and can be inserted to a body cavity 101, a first member 20 which is provided in the vicinity of an outer periphery of the tube body 10 and blocks and/or collects fluid L flowing through an outer peripheral surface of the tube body 10, and a second member 30 and/or a marker 50 in which the first member 20 is arranged in the vicinity of a body wall 102 adjacent to the body cavity 101 when the tube body 10 is inserted to the body cavity 101.

Description

  The present invention relates to a medical drain tube.

  The drain tube is disposed in body cavities such as the abdominal cavity and the chest cavity, and is used for the purpose of discharging body fluid accumulated in these body cavities to the outside of the body. The drain tube is generally a tubular body having a lumen, and a hole for communicating the lumen and the outside is provided near the distal end thereof. When the body fluid is discharged out of the body using the drain tube, the body fluid is normally discharged through the lumen of the drain tube.

  Various studies have been conducted on such a drain tube for the purpose of improving its operability and the like (for example, Patent Document 1).

JP-A-9-201330

  By the way, as described above, a drain tube usually discharges bodily fluid so as to pass through its lumen. On the other hand, the bodily fluid present in the body cavity has a surface tension or the like applied to the outer peripheral surface of the drain tube. It is also possible to move by action. Thus, when a bodily fluid moves along the outer peripheral surface of the drain tube and leaks out of the body, the bodily fluid cannot be collected. For this reason, there is a risk that the leaked body fluid may adhere to the clothes or bed of the patient in which the tube is placed, or may cause infection between the patient and medical personnel through the leaked body fluid.

  Therefore, an object of the present invention is to provide a medical drain tube that prevents unintentional leakage of bodily fluid from the outside of the body through the outer surface of the drain tube, and a method for placing the medical drain tube using the medical drain tube. is there.

  As a result of intensive studies, the present inventors have provided a member that blocks or collects the liquid transmitted on the outer surface of the drain tube in the vicinity of the outer periphery of the drain tube, and when the drain tube is inserted, the member is located near the body wall in the body. It has been found that the leakage can be prevented by being arranged at the position, and the present invention has been completed.

That is, the present invention relates to the following.
[1] A tubular tube body that can be inserted into a body cavity;
A first member provided near the outer periphery of the tube body and configured to dampen and / or collect liquid propagating on the outer periphery of the tube body;
A medical drain tube having a second member and / or a label configured to dispose the first member near the body wall adjacent to the body cavity when the body cavity is inserted into the body of the tube.
[2] The medical drain tube according to [1], wherein the first member has a tubular portion that covers at least a part of the outer periphery of the tube main body and can collect the liquid.
[3] The medical drain tube according to [2], wherein the tubular portion has a communication hole communicating with a lumen of the tubular portion in the vicinity of a distal end thereof.
[4] The medical drain tube according to [2] or [3], wherein the tubular portion has a discharge port for discharging the collected liquid.
[5] The medical drain tube according to any one of [2] to [4], wherein the tubular portion is connected to the second member.
[6] The medical drain tube according to any one of [1] to [5], wherein the first member has an expansion portion provided to be expandable toward the circumferential direction of the tube main body.
[7] The medical drain tube according to any one of [1] to [6], wherein the second member has a shape protruding in a circumferential direction of the tube body.
[8] A tubular tube main body that can be inserted into a body cavity, a first member that is provided near the outer periphery of the tube main body and configured to block and / or collect liquid that travels on the outer peripheral surface of the tube main body, A second member provided closer to the tube body than the first member and configured to be disposed near the body wall adjacent to the body cavity when the body cavity is inserted into the tube body, and / or Inserting a medical drain tube having a label through the body wall and into the body cavity;
Indwelling a medical drain tube in a state of being inserted into a body cavity.

  ADVANTAGE OF THE INVENTION According to this invention, the medical drain tube which prevented the bodily fluid leaking from the outside of a body along the outer surface of a drain tube, and the indwelling method of a medical drain tube using the same can be provided. That is, since the body wall adjacent to the body cavity is a part that presses the medical drain tube relatively strongly, it is considered that the body wall is a part that restricts the movement of liquid along the outer surface of the medical drain tube. By collecting and / or capping the liquid that travels on the outer surface of the medical drain tube near the body wall, the liquid that travels on the outer surface of the medical drain tube may leak out of the body beyond the body wall. Is prevented.

FIG. 1 is a schematic view of a medical drain tube according to a preferred embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the medical drain tube shown in FIG. 1 when used. FIG. 3A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 3B is a longitudinal sectional view when the medical drain tube according to another aspect of the present invention is used. 4A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 4B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used. 5A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 5B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used. 6A is a schematic diagram of a medical drain tube according to another aspect of the present invention, and FIG. 6B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used. is there.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the accompanying drawings.

First, a medical drain tube according to a preferred embodiment of the present invention will be described.
FIG. 1 is a schematic view of a medical drain tube according to a preferred embodiment of the present invention, and FIG. 2 is a longitudinal sectional view when the medical drain tube shown in FIG. 1 is used. In each drawing in the present application, for ease of explanation, the size of each member is emphasized as appropriate, and the illustrated members do not indicate actual sizes.

The medical drain tube 1 is placed in the body cavity 101 in the body of the subject 100 and is used for discharging liquid and gas existing in the body cavity 101.
In the present specification, the body cavity refers to a cavity for storing an internal organ. Examples of body cavities are dorsal cavities such as the cranial cavity and spinal canal, for example, ventricular cavities such as the pericardial cavity, pleural cavity, abdominal cavity, peritoneal cavity, and pelvic cavity.
In the present specification, the body wall adjacent to the body cavity refers to the tissue forming the body cavity, and includes not only membranes, muscles, and bones adjacent to the body cavity but also skin tissues such as epidermis, dermis, and subcutaneous tissue.
In addition, the liquid present in the body cavity is not particularly limited, and includes exudates produced by surgical operations, wounds, and the like, and secreted fluids secreted from various organs, blood, cachexia, and the like.

  A medical drain tube 1 shown in FIGS. 1 and 2 is provided in the vicinity of the outer periphery of a tubular tube main body 10 that can be inserted into a body cavity 101 and the outer periphery of the tube main body 10. The first member 20 configured to be recovered and the second member configured to dispose the first member 20 near the body wall 102 adjacent to the body cavity 101 when the body cavity 101 of the tube body 10 is inserted. 30.

The tube body 10 is a tubular body that is long and has a circular outer shape in cross section, and in use, the distal end side (distal end side) 11 is disposed in the body cavity 101 and the proximal end side. The (proximal end side) 12 is disposed outside the body. And the liquid L and gas which exist in the body cavity 101 are discharged | emitted through the lumen | bore 13 penetrated from the front end side 11 of the tube main body 10 to the base end side 12. FIG.
Further, the tube body 10 is provided with a plurality of communication holes 14 that allow the body cavity 101 and the lumen 13 to communicate with each other on the side surface near the distal end. The liquid L and gas existing in the body cavity 101 can also be recovered through the communication hole 14.

The material constituting the tube body 10 is not particularly limited, and various known materials can be used alone or in combination. Examples of such materials include soft vinyl chloride resin, polyurethane resin, silicone rubber, natural rubber, synthetic rubber, and fluorinated resin.
Unless otherwise specified, various other known materials as described above can be used singly or in combination for other members.

Although the length of the tube main body 10 is not specifically limited, For example, it is 250-1000 mm, Preferably, it can be 300-500 mm.
Although the outer diameter of the tube main body 10 is not specifically limited, For example, 0.75-15 mm, Preferably it can be 2-10 mm.
Although the internal diameter of the tube main body 10 is not specifically limited, For example, it can be set to 0.25-14 mm, Preferably, 1-9 mm.

  The first member 20 is provided in the vicinity of the outer periphery of the tube body 10 and is configured to block and / or collect the liquid that travels on the outer peripheral surface of the tube body 10. The first member 20 includes a tubular portion 21 that covers the outer periphery of the tube body 10, and a discharge port 22 that is provided on a side surface on the proximal end side of the tubular portion 21.

  The tubular portion 21 accommodates the tube body 10 in a part of the tube body 10 in the longitudinal direction. The tubular portion 21 has a slightly larger inner diameter than the outer diameter of the tube main body 10 and a cross-sectional shape corresponding to the cross-sectional shape of the tube main body 10. Further, the distal end side (distal end side) of the tubular portion 21 is open. In addition, a slight gap 23 is formed between the tubular portion 21 and the tube main body 10, and the liquid L that has been transmitted through the tube main body 10 in the body cavity 101 can further travel through the gap 23 and move. .

When the medical drain tube 1 is indwelled, the vicinity of the distal end of the tubular portion 21 is arranged in the body cavity 101 near the body wall 102. Since the body wall 102 is a part that presses the medical drain tube 1 relatively strongly, it is considered that the body wall 102 is a part that restricts the movement of the liquid L along the outer surface of the medical drain tube 1. The outer surface of the medical drain tube 1 is recovered by collecting the liquid L from the gap 23 immediately before the liquid L propagating on the outer surface of the medical drain tube 1 near the body wall 102 contacts the body wall 102. Is prevented from leaking beyond the body wall 102.
Note that when the medical drain tube 1 is placed, the vicinity of the proximal end (distal end) of the tubular portion 21 is disposed outside the body.

  A discharge port 22 is provided on the side surface near the proximal end of the tubular portion 21. The discharge port 22 communicates with the gap 23 of the tubular portion 21, and by connecting a suction device or the like to the discharge port 22, the liquid L moving through the gap 23 can be sucked and collected. Thus, by providing the discharge port 22 in the tubular portion 21 separately from the tube main body 10, the liquid L can be collected by the first member 20 even when the liquid L is not discharged in the tube main body 10. Become.

Although the length of the tubular part 21 mentioned above is not specifically limited, For example, 5-990 mm, Preferably it can be 20-950 mm.
Although the outer diameter of the tubular part 21 is not specifically limited, For example, it is 2-20 mm, Preferably, it can be 3.5-15 mm.
Although the internal diameter of the tubular part 21 is not specifically limited, For example, 1-16 mm, Preferably, it can be 2.5-11 mm.
Moreover, the difference between the inner diameter of the tubular portion 21 and the outer diameter of the tube body 10 is not particularly limited, but may be, for example, 0.25 to 2 mm, preferably 0.5 to 1 mm.

The second member 30 is a flange that is connected to the side surface of the tubular portion 21 and has a shape protruding in the circumferential direction of the tube body 10. The second member 30 has a disk shape whose thickness increases toward the center.
The second member 30 is provided closer to the proximal end side than the body fluid L collection site (the distal end opening of the tubular portion 21) of the first member 20, and contacts the outer surface of the body wall 102. The distance between the distal end of the tubular part 21 and the second member 30 is adjusted so that the vicinity of the distal end of the tubular part 21 of the first member 20 is positioned in the body cavity 101 near the body wall 102. Has been. That is, by placing the second member 30 in contact with the outer surface of the body wall 102, the arrangement position of the first member 20 when the tube body 10 is inserted into the body cavity can be determined.

  In the medical drain tube 1 as described above, the position of the first member 20 is determined by the second member 30, so that the body fluid L collection site (tubular portion 21) of the first member 20 at the time of insertion thereof. The distal end opening of the body cavity 101 is disposed near the body wall 102 in the body cavity 101. Then, the body fluid L transmitted through the tube body 10 in the body cavity 101 can be collected in the first member 20 in the vicinity of the body wall 102 in the body cavity 101. As a result, the bodily fluid L can be prevented from leaking out of the body unintentionally.

  As a deformation | transformation aspect of the medical drain tube 1 mentioned above, what is shown by FIGS. 3-6 is mentioned, for example. In addition, in each figure, the same code | symbol is attached | subjected about the structural member same as the structural member of the medical drain tube 1. FIG. Hereinafter, it demonstrates centering around difference with the medical drain tube 1 of medical drain tube 1A-1D, and abbreviate | omits description about a coincidence point.

  FIG. 3A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 3B is a longitudinal sectional view when the medical drain tube according to another aspect of the present invention is used.

  In the medical drain tube 1A shown in FIGS. 3A and 3B, the second member 30 is omitted. On the other hand, the marker 40 is provided on the outer peripheral side surface of the tubular portion 21A of the first member 20A. It is attached. The sign 40 indicates a certain position from the liquid L recovery site of the first member 20A (in this embodiment, the tip of the tubular portion 20A). Therefore, when the medical drain tube 1A is inserted, the collection site of the liquid L of the first member 20A can be arranged near the body wall 102 by arranging the marker 40 near the body surface.

  In this aspect, a plurality of markers 40 are provided along the longitudinal direction of the tubular portion 21A on the outer peripheral side surface of the tubular portion 21A. Each mark 40 indicates a different distance from the recovery site of the liquid L of the first member 20A, so that the operator can consider the patient, the application site, etc., and the liquid L of the first member 20A. The position of the recovery site can be selected as appropriate.

  As shown in FIG. 3B, the insertion position of the medical drain tube 1A is fixed by using the fixing member 50 when the medical drain tube 1A is inserted into the body cavity 101. In this embodiment, the fixing member 50 is an adhesive tape, but is not limited thereto, and a pin, a thread (suture), a bandage, or the like can be used. Moreover, in order to fix a pin, a thread | yarn, a bandage etc. more easily, the penetration hole which served as the label | marker 40 may be provided in the outer peripheral side surface of 21 A of tubular parts. In addition, it cannot be overemphasized that it replaces with the label | marker 40 and the fixing member 50 may be beforehand connected to the predetermined position of the outer peripheral side surface of 21 A of tubular parts.

  4A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 4B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used.

  The medical drain tube 1B shown in FIGS. 4 (a) and 4 (b) is configured such that the distal end of the tubular portion 21B of the first member 20B is in close contact with the tube main body 10, and from the distal end of the tubular portion 21B. Inflow of the liquid L is prevented. On the other hand, on the outer peripheral side surface near the tip (distal end) of the tubular portion 21B, a plurality of communication ports 24 that communicate with the gap 23B in the lumen of the tubular portion 21B are provided. And the communication port 24 of the 1st member 20B is comprised by the 2nd member 30 so that it may be arrange | positioned in the body wall 102 at the time of insertion of the medical drain tube 1B.

  Such a medical drain tube 1B collects a small amount of liquid L transmitted through the tube body 10 in the body wall 102 through the communication port 24, or causes the body wall 102 to closely contact the tubular portion 21B at the communication port 24. Thus, the movement of the liquid L can be limited. As a result, even when the medical drain tube 1B according to the present embodiment is used, unintentional leakage of the body fluid L is prevented.

  5A is a schematic view of a medical drain tube according to another aspect of the present invention, and FIG. 5B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used.

  As shown in FIGS. 5A and 5B, the medical drain tube 1C includes a suction cup as the second member 30C. Further, when the medical drain tube 1C is inserted, the second member 30C is arranged such that the liquid L recovery site (near the tip of the tubular portion 21) of the first member 20 is disposed near the body wall 102 outside the body. It is configured.

  In such a medical drain tube 1 </ b> C, a small amount of liquid L traveling through the tube body 10 in the body wall 102 is discharged outside the body, and at the same time, the liquid L can be collected by the first member 20 </ b> C. As a result, even when the medical drain tube 1C according to this embodiment is used, unintentional leakage of the body fluid L is prevented.

  6A is a schematic diagram of a medical drain tube according to another aspect of the present invention, and FIG. 6B is a longitudinal sectional view of the medical drain tube according to another aspect of the present invention when used. is there.

  In the medical drain tube 1 </ b> D shown in FIGS. 6A to 6C, the tubular portion 21 </ b> D of the first member 20 </ b> D does not have a gap between the tube body 10. On the other hand, the tubular portion 21D has an extended portion 25 on the outer peripheral side surface in the vicinity of the tip portion. The expansion part 25 is a balloon, and on the other hand, a lumen communicating with the expansion part 25 is provided in the tubular part 21D and the port 26 connected to the tubular part 21D. Then, as shown in FIGS. 6 (b) and 6 (c), the expansion portion 25 is injected into the expansion portion 25 by injecting a liquid such as gas, physiological saline, or buffer solution through the port 26. It is configured to be expandable toward 10 circumferential directions.

  Here, as shown in FIGS. 6B and 6C, in the medical drain tube 1 </ b> D, when the body cavity 101 is inserted, the expanded portion 25 is arranged in the body wall 102 by the second member 30. It is configured. As a result, when the medical drain tube 1D is inserted into the body cavity 101, the expanded expansion part 25 presses against the body wall 102, and the liquid L transmitted through the tube main body 10 can be blocked by the expansion part 25. As a result, even when the medical drain tube 1D according to this embodiment is used, unintentional leakage of the body fluid L is prevented.

Although the outer diameter before expansion (at the time of contraction) of the expansion part 25 is not particularly limited, for example, a member connected to the expansion part 25, in this embodiment, 0.05 to 0.05 compared with the outer diameter of the tubular part 21D. 1 mm larger, preferably 0.05 to 0.5 mm larger. This facilitates the insertion of the medical drain tube 1D into the body cavity 101.
The outer diameter at the time of expansion of the expansion part 25 is not particularly limited. For example, it is preferably 0.1 to 20 mm larger than the outer diameter of the member connected to the expansion part 25, in this embodiment, the tubular part 21D. Is larger by 0.5 to 10 mm. Thereby, the expansion part 25 can fully squeeze the surrounding body wall 102, and the liquid L transmitted through the tube main body 10 can be more reliably stopped.

  In addition, as a further deformation | transformation aspect of medical drain tube 1D, the expansion part 25 is replaced with a balloon and what is comprised with the liquid absorption material is mentioned. In this case, when the medical drain tube is inserted into the body cavity, the expansion portion first swells by absorbing the liquid transmitted through the tube main body, and then the expanded expansion portion presses the body wall and transmits through the tube main body. Can dampen liquids.

  The water-absorbing material that can constitute such an extended portion is not particularly limited, and examples thereof include polyacrylate, polysulfonate, maleic anhydride, polyacrylamide, and polyvinyl alcohol. Species can be used alone or in combination of two or more.

  In addition, when the liquid L is blocked using the expansion part 25 as in the medical drain tube 1D, the tubular part 21D may be removed as necessary after the expansion part 25 is arranged. The expansion portion 25 is once disposed at a desired position in the body wall 102. When the expansion portion 25 is expanded, the body wall 102 and the tube main body 10 are compressed at the position, and as a result, even when the tubular portion 21D does not exist, the tube It is possible to dam the liquid L transmitted through the main body 10.

  It should be noted that any of the modifications may be the same as the medical drain tube 1 as other constituent elements than those mentioned above. In addition, as long as there is no contradiction in configuration, a medical drain tube can be configured by appropriately combining two or more of the configurations of the above-described embodiment and the above-described modified modes.

Next, the method of the present invention will be described based on a preferred embodiment.
The indwelling method of the medical drain tube of the present invention,
A tubular tube main body that can be inserted into a body cavity, a first member that is provided near the outer periphery of the tube main body and configured to block and / or collect liquid that travels on the outer peripheral surface of the tube main body, and a body cavity of the tube main body A medical drain tube having a second member and / or a marker configured to dispose the first member in the vicinity of the body wall adjacent to the body cavity at the time of insertion is inserted into the body cavity through the body wall Inserting step;
Placing the medical drain tube in a state of being inserted into the body cavity.

The subject having a body cavity in the present method is not particularly limited, but is a mammalian species such as a primate species, humans; rodents including mice, rats and hamsters; rabbits; horses, cows, dogs, cats, etc. .
In addition, the medical drain tube is not particularly limited as long as it is within the scope of the present invention, but in the present embodiment, the medical drain tube 1 described above is described as being used.

  The method of the present invention can be employed, for example, in drainage for collecting fluid composition to be exuded for body fluid drainage and examination after surgery, draining cachexia related to disease, etc. It is.

  First, in the first step of this embodiment, a medical drain tube 1 as shown in FIG. 1 is provided. The supplied medical drain tube 1 may be appropriately subjected to washing and sterilization treatment by a known method.

  In the next step, as shown in FIG. 2, the medical drain tube 1 is inserted into the through-hole 103 of the body wall 102 provided in advance and penetrates the body wall 102 so that the vicinity of the distal end of the tube body 10 is located in the body cavity. Insert and place in 101. In this step, by bringing the second member 30 into contact with the body surface of the body wall 102, the vicinity of the distal end of the tubular portion 21 of the first member 20 is disposed near the body wall 102 in the body cavity 101. .

  In the next step, the medical drain tube 1 is placed while being inserted into the body cavity 101. Thereby, the liquid L in the body cavity 101 can be discharged or collected via the tube body 10 of the medical drain tube 1. When the liquid L in the body cavity 101 is discharged through the tube body 10, suction may be performed using an aspirator as appropriate. Further, when the liquid L is not discharged, the proximal end side of the tube body 10 may be appropriately sealed with a lid, a seal or the like.

  In this step, the liquid L that travels on the outer peripheral side surface of the tube body 10 is collected by the first member 20. Therefore, in this step, the liquid L that travels through the tube body 10 is prevented from leaking out of the body. In particular, when the liquid L is not discharged or collected by the tube body 10, the liquid L tends to accumulate in the body cavity 101, but even in such a case, the liquid L can be sufficiently removed to the outside of the body. Leakage is prevented.

  In addition, in the discharge port 22 of the 2nd member 20, the liquid L is discharged | emitted as needed. At this time, an aspirator may be connected to the discharge port 22 as appropriate to perform suction.

  As described above, the medical drain tube 1 can be placed in the body cavity 101 while preventing the unintentional leakage of the liquid L from the body cavity 101 by the above-described placement method of the medical drain tube.

Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited to this.
In the present invention, each component can be replaced with any component that can exhibit the same function, or any component can be added.

1, 1A, 1B, 1C, 1D Medical drain tube 10 Tube body 11 Tip side 12 Base end side 13 Lumen 14 Communication port 20, 20A, 20B, 20C, 20D First member 21, 21A, 21B, 21D Tubular Part 22 Discharge port 23, 23B Gap 24 Communication port 25 Expansion part 26 Port 30, 30C Second member 40 Marking 50 Fixing member 100 Target 101 Body cavity 102 Body wall 103 Through-hole

Claims (8)

A tubular tube body that can be inserted into a body cavity;
A first member provided near the outer periphery of the tube body and configured to dampen and / or collect liquid propagating on the outer periphery of the tube body;
A medical drain tube having a second member and / or a label configured to dispose the first member near the body wall adjacent to the body cavity when the body cavity is inserted into the body of the tube.   The medical drain tube according to claim 1, wherein the first member has a tubular portion that covers at least a part of the outer periphery of the tube main body and can collect the liquid.   The medical drain tube according to claim 2, wherein the tubular portion has a communication hole communicating with the lumen of the tubular portion in the vicinity of a distal end thereof.   The medical drain tube according to claim 2 or 3, wherein the tubular portion has a discharge port for discharging the collected liquid.   The medical drain tube according to any one of claims 2 to 4, wherein the tubular portion is connected to the second member.   The medical drain tube according to any one of claims 1 to 5, wherein the first member has an expansion portion provided so as to be expandable toward the circumferential direction of the tube main body.   The medical drain tube according to any one of claims 1 to 6, wherein the second member has a shape protruding in a circumferential direction of the tube main body. A tubular tube main body that can be inserted into a body cavity, a first member that is provided near the outer periphery of the tube main body and configured to block and / or collect liquid that travels on the outer peripheral surface of the tube main body; A medical drain tube having a second member and / or a marker configured to dispose the first member in the vicinity of the body wall adjacent to the body cavity at the time of insertion is inserted into the body cavity through the body wall Inserting step;
Indwelling a medical drain tube in a state of being inserted into a body cavity.

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