JP2011206100A - Medical drainage tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical drainage tool preventing deformation such as bending or buckling of a suction instrument caused by the weight of a catheter connected to the upper part of the suction instrument even if the suction instrument is sufficiently flexibly formed to achieve sufficient low pressure of negative pressure of suction.SOLUTION: As the negative pressure is generated in the suction instrument 120 to the upper part of which a connection tube 110 is connected, a drainage fluid is sucked from a wound, etc., in a human body. The suction instrument 120 is formed sufficiently flexible so that the negative pressure in the suction instrument 120 is sufficiently low. However, as the suction instrument 120 is supported at a position further outside than a drainage tube 130 by a support member 140, deformation such as bending or buckling of the flexible suction instrument 120 caused by the weight of the connection tube 110 connected to the upper part can be prevented.

Description

  The present invention relates to a medical drainage device for sucking and storing drainage fluid such as exudate from a human wound or the like.

  Currently, a medical drainage device is used to suck and store drainage fluid such as exudate from a wound cavity of a human body. For example, a first container body having a first inlet having a first connecting member and a first outlet having a first opening / closing member, and having a negative pressure generating function, and a second connection A bag-like second container body provided with a second inlet having a member and a second outlet having a second opening / closing member, and a first outlet of the first container body; There is a proposal for a medical drainage tool that is detachable from a second connecting member of a second container body (Patent Document 1).

  In such a medical drainage device, the natural drainage method and the suction drainage method can be appropriately selected as means for removing drainage fluid such as exudate from the human body wound cavity, and the labor of detaching the catheter and the container can be saved. Can reduce the risk of infection.

JP 2008-206879 A

  The medical drainage device of Patent Document 1 can suck and drain the drainage from the human wound by the negative pressure generating function. In the medical drainage device of Patent Document 1, the negative pressure for sucking the drainage is generated by an aspirator that is formed into a hollow sphere with an elastic body as described above.

  In a conventional medical drainage device, for example, a pressure such as −50 mmHg is generated by the above-described suction device. The suction device that generates such a negative pressure is sufficiently thick to generate the negative pressure, and thus has sufficient mechanical strength. However, the present inventor attempted to suck the drainage without applying a relatively high negative pressure as described above to the patient.

  Therefore, the present inventor made a prototype of a medical drainage device that has a sufficiently low negative pressure. However, in order to generate such a low pressure, it is necessary to form the suction device sufficiently flexibly by adjusting the thickness and hardness. For this reason, it was confirmed that the mechanical strength of the suction device is insufficient, and for example, deformation such as bending or buckling occurs in the suction device due to the weight of the connecting tube or catheter connected to the upper part. .

  The present invention has been made in view of the above-described problems, and provides a medical drainage device that can ensure mechanical strength even when a hollow spherical suction device is sufficiently flexible. Is.

  The medical drainage device of the present invention is a medical drainage device for sucking and storing drainage from a wound cavity or the like of a human body, a connection tube to which a catheter inserted into the wound cavity or the like is coupled, and an elastic body The suction device is formed into a hollow spherical shape and the connection tube is connected to the upper portion, the drainage tube connected to the lower portion of the suction device, and at least the lower portion of the suction device at a position outside the drainage tube. And a bowl-shaped support member having an upper surface opening to be supported.

  Therefore, in the medical drainage device of the present invention, the catheter is inserted into the wound cavity of the human body. Since the suction device connected to the upper portion of the connecting tube to which the catheter is connected generates negative pressure, the drainage is sucked from the wound cavity of the human body. The drainage liquid is discharged from the connecting tube to a storage bag or the like via a hollow suction device and a drainage pipe, and stored. In order to make the negative pressure of suction as described above sufficiently low, it is necessary to form the suction device sufficiently flexibly. However, this suction device is supported by a support member at a position outside the drainage pipe. For this reason, it is possible to prevent the flexible suction device from being deformed such as bending and buckling due to the weight of the connecting tube connected to the upper portion.

  Moreover, in the medical drainage device as described above, the drainage pipe is piped to the storage bag that stores the drainage, and the support member may also support the upper edge of the storage bag.

  The medical drainage device as described above may further include a suspension member for suspending the storage bag, and the suspension member may be connected to the support member.

  Further, in the medical drainage device as described above, the maximum pressure generated by the aspirator may be −10 to −30 mmHg.

  Further, in the medical drainage device as described above, the maximum pressure generated by the aspirator may be about −20 mmHg.

  The various components of the present invention do not necessarily have to be independent of each other. A plurality of components are formed as a single member, and a single component is formed of a plurality of members. It may be that a certain component is a part of another component, a part of a certain component overlaps with a part of another component, or the like.

  In addition, the saddle shape in the present invention means the shape of the upper surface opening that supports the lower part of the spherical lower half, and specifically, the lower part of the lower part of the spherical suction device. What is necessary is just to be formed in the shape which supports.

  In the medical drainage device of the present invention, the aspirator is supported by the support member at a position outside the drainage pipe. For this reason, even if the suction device is sufficiently flexible to make the suction negative pressure sufficiently low, the suction device is bent or buckled due to the weight of the connecting tube connected to the upper portion of the suction device. It is possible to prevent such deformation.

It is a typical vertical front view which shows the structure of the medical drainage device of embodiment of this invention.

  An embodiment of the present invention will be described below with reference to the drawings. The medical drainage device 100 of the present embodiment is used for sucking and storing drainage fluid such as exudate from a human body wound cavity or the like (not shown).

  Therefore, as shown in FIG. 1, a medical drainage device 100 according to the present embodiment includes a catheter (not shown) inserted into a wound cavity and a connecting tube 110 in which the catheter is connected to the distal end portion 111. A suction device 120 formed of an elastic body in a hollow spherical shape and having a connection tube 110 connected to an upper portion 121; a drainage tube 130 connected to a lower portion 122 of the suction device 120; and a drainage tube 130 And a bowl-shaped support member 140 having an upper surface opening that supports at least the lower part of the suction device 120 at a position on the outer side.

  Furthermore, in the medical drainage device 100 of the present embodiment, the drainage pipe 130 is piped to the storage bag 150 that stores the drainage, and the support member 140 also supports the upper edge 151 of the storage bag 150. Yes. In addition, a suspension member 160 for suspending the storage bag 150 is also provided, and the suspension member 160 is connected to the support member 140.

  More specifically, the distal end portion 111 of the connection tube 110 is formed in an existing structure to which a catheter that sucks drainage fluid such as exudate from a wound cavity of a human body is connected. The end portion 112 of the connecting tube 110 is connected to the upper part 121 of the suction device 120 with a sufficient inner diameter that does not block even when the drainage solidifies.

  The suction device 120 is formed of, for example, a silicone rubber having a hardness (durometer A) of 50 in a spherical shape having an outer diameter of 50 mm, an inner diameter of 46 mm, and a wall thickness of 2 mm, and by adjusting the material hardness and the product wall thickness, The maximum pressure generated is -10 to -30 mmHg, more preferably about -20 mmHg.

  The drainage pipe 130 is made of a resin having a hardness sufficiently higher than that of the suction device 120, and is a straight pipe having a sufficient inner diameter that does not block even when the drainage solidifies. The drainage pipe 130 is integrally fixed to the lower part of the suction device 120 by adhesion, and is also integrally fixed to the storage bag 150 by welding.

  A one-way valve (not shown) is attached to the end portion 112 of the connecting tube 110 and the lower end portion 131 of the drainage pipe 130. The support member 140 is formed in, for example, a horizontally long shape with a resin having a predetermined hardness, and supports the upper edge portion 151 of the storage bag 150. Since the suspension member 160 is connected to both ends of the support member 140, the storage bag 150 is supported by the support member 140 suspended by the suspension member 160.

  The support member 140 supports the aspirator 120 at a central portion 141 located outside the drainage pipe 130. The central portion 141 of the support member 140 is formed in a bowl shape with an upper surface opening that supports the lower portion of the spherical suction device 120 without deformation.

  The bowl-shaped portion 141 of the upper surface opening is formed in a shape that supports the lower portion of the flexible suction device 120 so that deformation such as bending and buckling does not occur due to the weight of the connection tube 110. More specifically, the portion 141 of the support member 140 has an inner diameter of 50 mm corresponding to the outer diameter of the suction device 120 and a diameter of the upper surface opening of about 36 mm.

  The storage bag 150 has a ventilation hole 152 formed in the upper part, and a hydrophobic ventilation filter 153 is attached to the ventilation hole 152. On the outer surface of the storage bag 150, a scale (not shown) indicating the capacity of the stored drainage is written.

  In the configuration as described above, in the medical drainage device 100 of the present embodiment, a catheter is inserted into a wound cavity of a human body (not shown). When the operator (not shown) contracts the suction device 120 in such a state, the suction device 120 that recovers from the contraction generates a pressure of about −20 mmHg on the catheter.

  Due to this negative pressure, drainage fluid such as exudate is sucked from the catheter's wound cavity or the like to the suction device 120 via the connecting tube 110. The drained liquid sucked in this way is discharged and stored in the storage bag 150 via the hollow suction device 120 and the lower drainage pipe 130.

  Since the storage bag 150 is formed with a vent 152, the inside thereof is always maintained at atmospheric pressure. Therefore, the volume of drainage stored in the storage bag 150 is read by a scale.

  In addition, since the hydrophobic ventilation filter 153 is attached to the ventilation hole 152 of the storage bag 150, the drainage liquid is smoothly discharged into the storage bag 150, and germs and the like enter the inside from the outside of the storage bag 150. There is no. In addition, since the upper edge 151 of the storage bag 150 is supported by the support member 140, the scale can be accurately read without being unnecessarily deformed even when the drainage is stored.

  Furthermore, since the storage bag 150 is suspended by the suspension member 160 connected to both ends of the support member 140, the storage bag 150 is easy to handle. The suction unit 120 is supported by a central portion 141 located outside the drainage pipe 130 of the support member 140.

  For this reason, even if the hardness and thickness of the suction device 120 are adjusted so that the negative pressure becomes sufficiently low as described above, and the suction device 120 is formed sufficiently flexible, the connection connected to the upper portion 121. Due to the weight of the tube 110 and the like, the suction device 120 can be prevented from being deformed such as bending or buckling.

  In particular, the support member 140 that supports the suction device 120 is suspended by a suspension member 160. For this reason, even if the suction device 120 is inclined due to the weight of the connection tube 110 or the like, the support member 140 is correspondingly inclined and the support of the suction device 120 by the central portion 141 can be maintained. .

  Moreover, in the medical drainage device 100 of the present embodiment, a drainage pipe 130 made of a straight pipe having a sufficient inner diameter is bonded to the suction device 120 and welded to the storage bag 150. For this reason, it can prevent that the drainage pipe 130 is obstruct | occluded with the solidified drainage.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. In the above-described embodiment, the structure of each part has been specifically described. However, the structure and the like can be variously changed within a range that satisfies the present invention.

  For example, in the above embodiment, the case where the hook-shaped portion 141 of the support member 140 that supports the lower portion of the suction device 120 is formed integrally with the other portion that supports the storage bag 150 of the support member 140 or the like.

  However, the hook-shaped portion 141 may be detachably attached to the other part of the support member 140 (not shown). In this case, for example, when the aspirator 120 is inclined due to the weight of the connecting tube 110, the hook-shaped portion 141 is also inclined to maintain the lower support of the aspirator 120.

DESCRIPTION OF SYMBOLS 100 Medical drainage tool 110 Connecting tube 111 End part 112 End part 120 Aspirator 121 Upper part 122 Lower part 130 Drain pipe 131 Lower end part 140 Support member 141 Part 150 Storage bag 151 Upper edge part 152 Vent hole 153 Ventilation filter 160 Suspension member

Claims (5)

A medical drainage device for sucking and storing drainage from a wound cavity of a human body,
A connecting tube to which a catheter inserted into the wound cavity is connected;
An aspirator formed of an elastic body in a hollow spherical shape and connected to the upper portion of the connecting tube;
A drainage pipe connected to the lower part of the aspirator;
A bowl-shaped support member having an upper surface opening that supports at least the lower part of the suction device at a position outside the drainage pipe;
Medical drainage device. The drainage pipe is piped to a storage bag for storing the drainage;
The medical drainage device according to claim 1, wherein the support member also supports an upper edge portion of the storage bag. A suspension member for suspending the storage bag;
The medical drainage device according to claim 1 or 2, wherein the suspension member is connected to the support member.   The medical drainage device according to any one of claims 1 to 3, wherein the maximum pressure generated by the aspirator is -10 to -30 mmHg.   The medical drainage device according to claim 4, wherein the maximum pressure generated by the aspirator is about -20 mmHg.

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