JP5880933B2 - Combined medical device, extracorporeal circulating blood processing device, and blood reservoir unit - Google Patents

Description

  The present invention relates to a connector for holding a medical auxiliary device displaceably by the medical main device, for example, using a blood reservoir as a medical main device and an artificial lung as a medical auxiliary device.

  For example, in cardiac surgery, extracorporeal blood circulation using an artificial lung is performed. In extracorporeal blood circulation, the blood pump is operated to remove blood from the patient's vein, and after exchanging gas between the oxygen-containing gas and the blood by an artificial lung, the operation of returning to the patient's artery is performed. The blood circuit for performing extracorporeal blood circulation requires a buffer function for adjusting the blood volume in the circuit and keeping the blood return constant together with the artificial lung. Furthermore, a line is also provided for returning blood after aspirating blood from the operative field and separating and removing foreign matter. Therefore, a blood reservoir is used for temporarily storing the blood that has been removed from blood and for temporarily storing blood that has been aspirated from the operative field.

  As described above, in an extracorporeal blood circulation circuit, a blood reservoir is generally used together with an artificial lung, and the extracorporeal blood treatment apparatus in the following description means an apparatus including an artificial lung and a blood reservoir. . In addition, the artificial lung is generally configured such that a gas exchanging part for exchanging gas is integrated with a heat exchanger for adjusting the temperature of blood, but the heat exchanger is integrated. That is not essential. The following description is commonly applied also to the case of an oxygenator having only a gas exchange unit without a heat exchanger.

  On the other hand, in order to secure an arrangement space for various devices in the operating room, it is desired to shorten the distance between the oxygenator and the blood reservoir, which are components of the extracorporeal blood treatment apparatus. Also, in order to avoid an increase in the amount of blood filling in the blood circuit due to the routing of the circuit tube connecting the elements such as the oxygenator, blood reservoir, blood pump, etc., the distance between the elements should be shortened. Is desirable. Furthermore, for the convenience of handling when assembling the extracorporeal blood circulation circuit, the blood reservoir and the artificial lung are supplied in an integrated state, directly or indirectly via a connector. It is common. As a form of integration, a structure in which an artificial lung is connected to the bottom of the blood reservoir is usually adopted.

  By the way, since it is necessary to constantly monitor the blood storage volume of the blood reservoir, the area around the blood outlet at the bottom of the blood reservoir protrudes downward to reduce the cross-sectional area so that it is easy to confirm changes in the blood storage volume. A structure in which a blood reservoir is provided on the front side of the blood reservoir is used. In such a blood reservoir, an artificial lung or the like provided below the bottom surface of the blood reservoir is disposed on the back side of the blood reservoir. In the case of this arrangement, when the extracorporeal blood circulation circuit is used during surgery, the blood storage chamber is installed facing the operator so that the operator operating the circuit can easily see the amount of blood stored in the blood reservoir. It is desirable.

  On the other hand, a tube for communicating with other circuit elements such as a blood pump is connected to the artificial lung provided under the blood reservoir. In order to reduce the total blood filling amount, it is necessary to efficiently pipe this tube. For this reason, for example, the orientation of the artificial lung is determined so that the tube connection port of the artificial lung faces the blood pump, and the distance between the connected elements is made closer.

  However, in a blood reservoir with an integrated artificial lung, it is difficult to install the artificial lung in the direction with the best tube piping efficiency and at the same time install the blood reservoir in a direction that is easy for the operator to visually recognize. For this reason, Patent Literature 1 discloses an oxygenator-integrated blood reservoir capable of setting the orientation of the blood reservoir and the orientation of the artificial lung to be desirable directions. That is, the bottom of the blood reservoir and the upper part of the oxygenator are provided with a joint for joining them, and the joint has a configuration that allows the oxygenator and the blood reservoir to rotate relatively.

  As a result, the oxygenator is rotatably connected to the bottom of the blood reservoir on the back side of the blood reservoir, and the blood reservoir is oriented in a direction that is easily visible to the operator. Moreover, the orientation of the artificial lung can be set in consideration of the piping efficiency of a tube for connecting to a blood pump or the like. In this manner, the artificial lung can be installed in a desired direction with the blood storage chamber facing the operator.

  Patent Document 2 discloses an extracorporeal circulation blood processing apparatus that has an improved range of freedom by expanding the range of motion of an artificial lung. That is, a blood reservoir and an artificial lung are connected using a tubular connector composed of a plurality of mutually rotatable tubular members and a holding member that rotatably holds the tubular connector along the outer peripheral surface of the blood reservoir. The configuration is adopted. Thereby, as the tubular connector rotates along the outer peripheral surface of the blood reservoir, the artificial lung also rotates along the outer peripheral surface of the blood reservoir. Therefore, in comparison with the configuration of Patent Document 1, in the configuration of Patent Document 2, the artificial lung rotates along the outer peripheral surface of the blood reservoir in addition to the rotation (rotation) around the connecting portion with the blood reservoir. Movement (revolution) is also possible, and the range of motion is expanded. As a result, the artificial lung itself can be prevented from becoming an obstacle to rotation, and the degree of freedom in layout is improved.

JP-A-4-178972 JP-A-2005-253818

  In the configuration disclosed in Patent Document 1, the orientation of the blood reservoir and the orientation of the artificial lung can be set to a desired orientation, but the artificial lung is only rotated around the connecting portion with the blood reservoir. The range of motion is narrow and the degree of freedom in layout is low. That is, only the orientation of the oxygenator is variable by rotation about the connecting portion with the blood reservoir, and the position of the oxygenator with respect to the blood reservoir cannot be adjusted.

  Therefore, when connecting the blood outlet of the blood reservoir and the blood inlet of the artificial lung via a roller pump, the state where the blood outlet and the blood inlet are too close together cannot be resolved, and the tube is routed. A situation occurs in which a detour must be taken. Such detours can lengthen the tube and cause increased blood filling.

  On the other hand, according to the configuration disclosed in Patent Document 2, the degree of freedom in layout is improved. However, in order to rotate the tubular connector along the outer peripheral surface of the blood reservoir, a structure having a member that assists the rotation over the outer periphery of the blood reservoir is required. In order to operate such a structure stably, the connecting structure is inevitably large and complicated.

  There are other examples in which both devices are used in conjunction with each other by holding the medical auxiliary device displaceably by the medical main device, not limited to the combination of the oxygenator and blood reservoir as described above. Problems similar to those described above exist for the connector of the medical device.

  Therefore, the present invention reliably connects the medical main device and the medical sub device with a simple connection structure, and further allows the degree of freedom in adjusting the positional relationship and posture between the medical main device and the medical sub device. It is an object of the present invention to provide a medical device connector that can be improved.

  Another object of the present invention is to provide a composite medical device and an extracorporeal circulating blood treatment device using such a connector.

In order to solve the above problems, a composite medical device of the present invention includes a medical main device, a medical auxiliary device used in cooperation with the medical main device, and the medical device for the medical main device. And a medical device connector configured to hold the auxiliary device for displacement so that the connector is connected to a coupling portion provided on a bottom surface of the medical main device via a cylindrical surface. A first fitting portion capable of fitting, a second fitting portion capable of fitting via a cylindrical surface to a coupling portion provided at an upper portion of the medical auxiliary device, and the first fitting And a support structure unit that supports and integrates the second fitting unit, and the support structure unit is arranged around a rotation center axis of the first fitting unit with respect to the medical main device. And rotatable about the rotation center axis of the second fitting portion with respect to the medical auxiliary device, Wherein a rotation center axis of the first fitting portion rotation center axis of the second fitting portion are parallel to each other, it is arranged with a gap therebetween, the first and the rotation center of the second fitting portion The shaft extends in the vertical direction of the main medical device .

  According to the connector for a medical device of the present invention, the medical main device and the medical auxiliary device are reliably connected with a simple structure. The connector can be rotated with respect to the medical main device at the first fitting portion, and the posture of the medical auxiliary device can be rotated and adjusted around the second fitting portion. Thereby, the range and the degree of freedom of adjustment of the positional relationship and posture between the medical main device and the medical sub device are improved.

The perspective view of the extracorporeal circulation blood processing apparatus in embodiment of this invention Front view of extracorporeal circulating blood treatment device The perspective view of the connector which is one element of the extracorporeal circulation blood processing apparatus. Bottom view of the connector Side view showing in cross section the structure of the connecting part of the blood reservoir and oxygenator in the extracorporeal circulating blood treatment device The expanded sectional view which shows the coupling | bond part of the blood reservoir and connector in the extracorporeal circulation blood processing apparatus. The expanded sectional view which shows the coupling | bond part of the oxygenator and connector in an extracorporeal circulation blood processing apparatus Side view showing operation of extracorporeal circulation blood processing apparatus Bottom view showing operation of extracorporeal circulating blood treatment device Side view showing the state of the extracorporeal circulating blood treatment apparatus during storage Bottom view showing the state of the extracorporeal circulating blood treatment device during storage The side view which showed the structure which changed the connection part of the blood reservoir and connection tool in the extracorporeal circulation blood processing apparatus partially in cross section The side view which shows the blood reservoir unit which combined the blood reservoir and connector in the extracorporeal circulation blood processing apparatus.

  The connector of the medical device of the present invention can take the following aspects based on the above configuration.

  That is, the support structure portion includes a laterally extending portion that extends laterally from the first fitting portion, and a longitudinally extending portion that extends upward from the second fitting portion and is coupled to the laterally extending portion. 2. A bending structure portion formed at a portion where the lateral extension portion and the vertical extension portion are coupled to each other, and an outer corner portion of the bending structure portion forms an inclined surface. A connector for a medical device described in 1.

  The composite medical device of the present invention can be configured as follows using the connector having the above-described configuration.

  That is, a medical main device having a downward projecting portion in which a part off the center of the bottom surface of the main body portion projects downward, a medical auxiliary device used in cooperation with the medical main device, and a connection of the above configuration The coupling portion of the medical main device is provided to project downward at a position separated from the lower projection of the bottom surface of the main body, and the coupling portion of the medical auxiliary device is The rotation center axis of the first and second fitting portions provided in the upper part of the medical auxiliary device may be configured to extend in the vertical direction of the medical main device.

  In this configuration, one of the coupling portion and the first fitting portion of the medical main device forms an annular inner peripheral surface, and the other forms an annular outer peripheral surface, and the medical auxiliary device coupling portion. And one of the second fitting portions forms an annular inner peripheral surface, and the other forms an annular outer peripheral surface. By fitting the annular inner peripheral surface and the annular outer peripheral surface, the medical main body A device and the first fitting portion, and the medical auxiliary device and the second fitting portion are coupled to each other, and between the coupling portion and the first fitting portion of the medical main device; and A soft O-ring is interposed between the peripheral surfaces of the annular inner peripheral surface and the annular outer peripheral surface facing each other in at least one of the coupling portion of the medical auxiliary device and the second fitting portion. It can be set as the structure which has.

  Further, the support structure portion includes a laterally extending portion that extends laterally from the first fitting portion, and a longitudinally extending portion that extends upward from the second fitting portion and is coupled to the laterally extending portion. And a bent structure portion formed at a portion where the laterally extending portion and the longitudinally extending portion are coupled, and an outer corner portion of the bent structure portion forms an inclined surface, and the connection When the device is rotated around the coupling portion of the medical main device, the laterally extending portion and the lateral extension portion are arranged so as to avoid the side surface of the downward projecting portion and have a rotatable range of 360 degrees. It is preferable that the dimension of the inclined surface is set.

  In addition, it is preferable that the medical auxiliary device is configured to avoid interference with the downward projecting portion within the entire rotation range of the longitudinally extending portion.

  The extracorporeal circulatory blood processing apparatus of the present invention can be configured as follows using the connector having the above-described configuration.

  In other words, a part of the main body part that deviates from the center of the bottom surface has a blood storage chamber protruding downward, a blood outflow port is provided at the lower end of the blood storage room, and a blood inflow port is provided at the upper part of the main body part A blood reservoir having a blood channel for performing gas exchange by crossing the blood with the gas channel, and having an artificial lung connected to the blood reservoir, and the connector having the above-described configuration; The blood outflow port is connected to the inflow side of the blood flow path of the artificial lung via a blood pump, and the connector uses the blood reservoir as the medical main device, and the artificial device. The connecting portion of the blood reservoir that connects the lungs as the medical auxiliary device and is connected to the first fitting portion of the connector is positioned below the blood reservoir on the bottom surface of the main body. Projecting on the second fitting part and coupled to the artificial The coupling portion of the is provided on the top of the artificial lung, wherein the central axis of rotation of said first and second mating portions can be configured to extend in the vertical direction of the blood reservoir.

  A blood reservoir unit as described below can be configured using the connector having the above-described configuration.

  In other words, a part of the main body part that deviates from the center of the bottom surface has a blood storage chamber protruding downward, a blood outflow port is provided at the lower end of the blood storage room, and a blood inflow port is provided at the upper part of the main body part A blood reservoir, and a connector configured as described above, wherein the connector is coupled to the blood reservoir at the first fitting portion with the blood reservoir as the main medical device; The coupling part of the blood reservoir coupled to the first fitting part is provided to protrude downward at a position separated from the blood reservoir on the bottom surface of the main body part, and the rotation center axis of the first fitting part is The blood reservoir can be configured to extend in the vertical direction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiment, an extracorporeal circulation blood processing apparatus is taken as an example, and a configuration in which a blood reservoir and an artificial lung are connected by a connector is disclosed. However, the structure of the connector is not limited to the application to the combination of a blood reservoir and an artificial lung, and various medical main devices and medical devices that require freedom of adjustment of the positional relationship and posture. Applicable for connecting secondary devices.

<Embodiment>
FIG. 1 is a perspective view showing an extracorporeal circulation blood processing apparatus according to an embodiment of the present invention, and FIG. 2 is a front view. This extracorporeal circulatory blood processing apparatus is configured by connecting a blood reservoir 1 and an artificial lung 2 with a connector 3. The structure of the connector 3 is shown in FIGS. 3A and 3B. 3A is a perspective view, and FIG. 3B is a bottom view. FIG. 4 is a side view showing a cross-sectional structure of the connecting portion between the blood reservoir 1 and the artificial lung 2.

  The blood reservoir 1 includes a main body portion 4 and a lid body 5 placed on the upper portion of the main body portion 4. In addition, illustration of the cover body 5 is abbreviate | omitted except FIG. 1, FIG. The main body 4 has a blood storage chamber 6 that is formed so that a part of the bottom of the bottom surface protrudes downward. A blood outflow port 7 through which blood flows out is provided at the lower end of the blood storage chamber 6. . An annular coupling portion 8 that is coupled to the connector 3 is formed on the lower surface of the main body portion 4. The connector 3 can be rotated with respect to the blood reservoir 1 through fitting with the annular outer peripheral surface of the coupling portion 8. The coupling portion 8 protrudes downward at a position separated from the blood storage chamber 6 on the bottom surface of the main body portion 4. The coupling portion 8 can be further coupled to a holder (not shown) that constitutes a part of a support device for supporting the blood reservoir 1, thereby holding the blood reservoir 1 in a desired state. Can do.

  A plurality of intracardiac blood inlet ports 9 through which intracardiac blood flows and a venous blood inlet port 10 through which venous blood flows are attached to the lid 5. Further, the lid 5 is provided with a plurality of chemical solution injection ports 11 and 12 for mixing a chemical solution or the like into the blood, an exhaust port 13 for adjusting the pressure in the blood reservoir 1, and the like. The venous blood flow port 10 is connected to a blood removal line tube of the extracorporeal blood circulation circuit, and the intracardiac blood flow port 9 is connected to an intracardiac blood suction line tube. The blood outflow port 7 is connected to a suction port of a blood pump such as a roller pump through a tube of a blood supply line. As a constituent material of the main body 4 and the lid 5, it is desirable to use a material that has high rigidity and is not easily damaged, such as polycarbonate.

  This embodiment can be applied to the blood reservoir 1 even if it has other configurations. For example, as in the known configuration, the blood reservoir 1 holds a venous blood filtration network for filtering blood flowing from the venous blood flow inlet port 10 and removes it from the blood flowing from the intracardiac blood flow inlet port 9. A cardiotomy section for foaming is arranged. The venous blood filtration network has a well-known configuration that provides a function as a filter for removing foreign substances and bubbles in blood. The cardiotomy section has a well-known configuration including a filter having a bag shape as a whole and an antifoaming material disposed inside the filter.

  In the artificial lung 2, elements for heat exchange and gas exchange are housed in housings forming the heat exchange unit 14 and the gas exchange unit 15, respectively. The lumen formed by the heat exchange unit 14 and the gas exchange unit 15 is formed with a blood flow path penetrating the heat exchange unit 14 and the gas exchange unit 15 in the horizontal direction. A blood inlet port 16a and a blood outlet port 16b (see FIG. 4) are provided on the outer shell wall. Cold and hot water ports 17 and 18 are provided at the left and right ends of the heat exchanging unit 14 to allow cold water or hot water as heat exchange liquid to flow in and out. Gas ports 19 and 20 for introducing and deriving oxygen-containing gas are provided at the upper and lower ends of the gas exchange unit 14, respectively. A coupling portion 21 that couples to the connector 3 is provided on the upper surface portion of the housing of the heat exchange unit 14. The coupler 3 and the artificial lung 2 can be rotated with each other through fitting at the coupling portion 21. As a material of the artificial lung 2 housing (including the coupling portion 21), for example, polycarbonate can be used.

  As shown in FIG. 4, a stainless pipe bundle 14 a for heat exchange is disposed in the inner cavity of the heat exchange unit 14. A hollow fiber bundle 15 a that is a bundle of hollow fiber membranes is disposed in the lumen of the gas exchange unit 15. Both ends of the stainless steel pipe bundle 14a and the hollow fiber bundle 15a are exposed and filled with a potting material to form a potting portion (not shown). The potting portion has a cylindrical blood channel (not shown) whose lumen extends transversely across the stainless steel pipe bundle 14a and the hollow fiber bundle 15a.

  The blood flowing in from the blood inlet port 16a passes through the blood flow path in the lumen of the potting portion and flows out from the blood outlet port 16b. Cold water or hot water that is a heat exchange liquid flowing in from the cold / hot water inlet port 17 enters the lumen from one end of each stainless steel pipe, and flows out from the cold / hot water outlet port 18 through the other end of each stainless steel pipe. Meanwhile, heat exchange is performed with the blood in the heat exchange unit 14. On the other hand, the oxygen-containing gas flowing in from the gas inlet port 19 enters the lumen from one end of each hollow fiber membrane, and flows out from the gas outlet port 20 via the other end of each hollow fiber membrane. Meanwhile, gas exchange is performed with the blood in the gas exchange unit 15. That is, the gas exchange part 15 is a part which provides the basic function as an artificial lung.

  The configuration of the oxygenator 2 is an example, and the connection structure with the blood reservoir of the present embodiment can be applied even if the configuration is other than that. The heat exchanging unit 14 and the gas exchanging unit (artificial lung) 15 may be combined in another form or may be joined so as to be relatively rotatable. In addition, the artificial lung 2 is not limited to the heat exchange unit 14 and the gas exchange unit 15, and even if it is composed of only the gas exchange unit 15, the connection structure with the blood reservoir of the present embodiment is not limited. By applying this, it is possible to achieve the same effect. Therefore, in the present invention, the term “artificial lung” is used to mean a device that includes only a gas exchange unit.

  The blood inlet port 16a is connected to a discharge port of a blood pump (not shown) connected to the blood outflow port 7 of the blood reservoir 1 via a tube. That is, blood flowing out from the blood reservoir 1 is fed by a blood pump and flows into the artificial lung 2 from the blood inlet port 16a.

  As shown in FIGS. 3A and 3B, the connector 3 has a first fitting portion 22 and a second fitting portion 23, and has a structure in which both portions are integrally coupled. The first fitting portion 22 is fitted with the coupling portion 8 of the blood reservoir 1, and the second fitting portion 23 is fitted with the coupling portion 21 provided in the oxygenator 2. Thereby, the blood reservoir 1 and the artificial lung 2 are connected by the connecting tool 3. The connector 3 is preferably made of polycarbonate, for example.

  The connector 3 includes a laterally extending portion 24 that extends laterally from the first fitting portion 22, and a longitudinally extending portion that extends upward from the second fitting portion 23 and is coupled to the laterally extending portion 24. 25. A bent structure portion is formed at a portion where the laterally extending portion 24 and the longitudinally extending portion 25 are joined, and an outer corner portion of the bent structure portion forms an inclined surface 26. Thereby, it is a structure which is easy to avoid interference with the side surface of the blood storage chamber 6 when the connector 3 is rotated with respect to the blood reservoir 1. The first fitting portion 22 forms an annular inner peripheral surface 22a, and the second fitting portion 23 forms an annular outer peripheral surface 23a. As shown in FIG. 3A, a locking operation portion 27 is provided on the side of the longitudinally extending portion 25 at the top of the second fitting portion 23, which will be described later.

  FIG. 5A shows an enlarged cross-sectional view of the joint portion of the blood reservoir 1 and the connector 3 in FIG. FIG. 5B shows an enlarged cross-sectional view of the joint portion between the oxygenator 2 and the connector 3, that is, the vicinity of the joint portion 21.

  As shown in FIG. 5A, the coupling portion 8 of the blood reservoir 1 has an annular outer peripheral surface 8a in the vicinity of the upper end thereof, and the annular inner peripheral surface 22a of the first fitting portion 22 is fitted on the outer side thereof. doing. An O-ring 28 is interposed between the annular outer peripheral surface 8a and the annular inner peripheral surface 22a so as to be sandwiched and pressed between both surfaces. A lower portion of the annular outer peripheral surface 8a in the coupling portion 8 forms a coupling portion with a holder (not shown) that constitutes a part of a support device for supporting the blood reservoir 1. Further, as shown in FIG. 5B, the coupling portion 21 of the oxygenator 2 forms an annular inner peripheral surface 21a, and the annular outer peripheral surface 23a of the second fitting portion 23 is fitted therein. An O-ring 29 is interposed between the annular outer peripheral surface 23a and the annular inner peripheral surface 21a, and is pressed between the both surfaces.

  The locking operation unit 27 has a function of locking the fitting state of the second fitting unit 23 with respect to the coupling unit 21 of the oxygenator 2. That is, the convex portion on the outer surface side of the locking operation portion 27 engages with the concave portion on the inner surface side of the coupling portion 21 (not shown), and the fitted state is fixed. By pushing the locking operation portion 27 inward, the fitted state can be released.

  The formation of the peripheral surface to be fitted is not limited to the above configuration, and one of the coupling portion 8 and the first fitting portion 22 of the blood reservoir 1 forms an annular inner peripheral surface, and the other forms an annular outer peripheral surface. It is only necessary that one of the coupling portion 21 and the second fitting portion 23 of the lung 2 form an annular inner peripheral surface and the other forms an annular outer peripheral surface and can be fitted to each other.

  The operation for adjusting the position / posture of the oxygenator 2 with respect to the blood reservoir 1 through the connection by the connector 3 as described above is shown in FIGS. 6 is a side view and FIG. 7 is a bottom view. The connector 3 is rotatable with respect to the blood reservoir 1 around a rotation center axis A shown in FIG. 6 extending in the vertical direction of the annular outer peripheral surface 8a of the coupling portion 8. The oxygenator 2 is rotatable with respect to the connector 3 around a rotation center axis B extending in the vertical direction of the annular outer peripheral surface 23 a of the second fitting portion 23. A range in which the rotation center axis B shown in FIG. 6 rotates around the rotation center axis A is indicated by a diameter C in FIG. Further, a range in which the portion farthest from the rotation center axis B in the oxygenator 2 rotates around the rotation center axis B is indicated by a diameter D in FIG.

  As described above, the rotation center axis of the annular inner peripheral surface 22a and the rotation center axis of the annular outer peripheral surface 23a of the connector 3 are arranged with a space between each other. In addition to being able to rotate around 21 (second fitting portion 23), it is possible to revolve around the coupling portion 8 of the blood reservoir 1.

  Thereby, the position of the oxygenator 2 can be set over a wide range around the blood reservoir 1 by adjusting the rotation angle position of the connector 3 around the coupling portion 8 of the blood reservoir 1. Furthermore, the posture (orientation) of the oxygenator 2 can be set over a wide range by adjusting the rotation angle of the oxygenator 2 around the second fitting portion 23. Thus, although it is the simple connection structure by the connection tool 3, if both setting is combined, the mutual positional relationship of the blood reservoir 1 and the artificial lung 2 and the freedom degree of adjustment of an attitude | position can fully be improved. it can.

  As a result, the artificial lung 2 can be placed in a desired orientation with the front of the blood storage chamber 6 facing the operator, and a layout can be set to minimize the blood filling amount of the connecting tube. It becomes. For example, as can be seen from the front view shown in FIG. 2, the vertical line passing through the center of the artificial lung 2 can be set to be shifted laterally with respect to the vertical line passing through the center of the blood reservoir 1. This is useful in realizing a desired layout.

  As shown in FIG. 5A, an O-ring 28 is provided between the annular outer peripheral surface 8a and the annular inner peripheral surface 22a, and as shown in FIG. 5B, the annular outer peripheral surface 23a and the annular inner peripheral surface 21a. An O-ring 29 is interposed between the two surfaces and pressed. By interposing the soft O-ring, the braking force by the frictional force acts on the rotation between the blood reservoir 1 and the connecting device 3 and between the artificial lung 2 and the connecting device 3, and the angular position is fixed with an appropriate drag force. Is done. Therefore, although it can be easily rotated at the time of adjustment, inconvenient rotation during use is suppressed, and the adjusted position and angle can be maintained.

  Further, the soft O-rings 28 and 29 can reduce the influence of blurring after connection due to dimensional errors. That is, the joint 8 of the blood reservoir 1, the joint 21 of the artificial lung 2, and the connector 3 are made of a hard material. Therefore, in order to reduce blurring after connection, it is necessary to manage the dimensions within a precise tolerance range. On the other hand, by interposing a soft O-ring, a gap due to a dimensional error can be absorbed and a stable connection state can be obtained. This eliminates the need for dimensional management within a precise tolerance range.

  As shown in FIG. 8, the size and shape of the connector 3 is adjusted by rotating the connector 3 so that the longitudinally extending portion 25 is positioned between the coupling portion 8 of the blood reservoir 1 and the blood reservoir 6. Then, it is desirable to set so that interference between the oxygenator 2 and the blood reservoir 1 can be avoided. Thereby, at the time of packing storage, the artificial lung 2 and the blood reservoir 1 can be set to the state shown in FIG. 8, and storage space can be made small. A bottom view of this state is shown in FIG.

  For this purpose, it is necessary to set the size and shape of the connector 3 in consideration of the positional relationship between the blood storage chamber 6 and the coupling portion 8 in the blood reservoir 1 and the size and shape of the oxygenator 2. For example, as shown in FIG. 3A, the length of the laterally extending portion 24 and the inclined surface 26 of the outer corner portion of the bent structure formed by the combination of the laterally extending portion 24 and the longitudinally extending portion 25 are appropriately set. By setting, it becomes possible to operate in the state shown in FIGS. In particular, when the connector 3 is rotated around the coupling portion 8 of the blood reservoir 1, it extends in the lateral direction so as to avoid interference with the side surface of the blood storage chamber 6 and the rotatable range is 360 degrees. It is desirable that the length of the portion 24 and the size / angle of the inclined surface 26 are set.

  The connecting portion of the blood reservoir 1 and the connector 3 shown in FIG. 4 or 6, that is, the structure of the connecting portion 8 can be changed as in the connecting portion 30 shown in FIG. 10. That is, as for the coupling | bond part 30 of the blood reservoir 1 of FIG. 10, the lower end vicinity forms an annular | circular shaped outer peripheral surface (not shown), and the 1st fitting part 22 of the connector 3 is fitted in the outer side. . The upper part of the coupling part 30 forms a coupling part with the tip part of the holder 31. The holder 31 is a member constituting a part of a support device for supporting the blood reservoir 1. An O-ring is interposed between the annular outer peripheral surface of the coupling portion 30 and the annular inner peripheral surface of the first fitting portion 22 so as to be sandwiched and pressed between both surfaces.

  Moreover, as shown in FIG. 11, it is also possible to comprise the blood reservoir unit provided with the blood reservoir 1 and the connector 3 of the said structure, and to use. That is, the connector 3 constitutes an assembly structure that is coupled to the blood reservoir 1 at the first fitting portion 22. The rotation center axis A of the first fitting portion 22 extends in the vertical direction of the blood reservoir 1. By using this blood reservoir unit and coupling the artificial lung 2 to the second fitting portion 23 of the connector 3, an extracorporeal blood circulation circuit can be configured quickly. In this blood reservoir unit, the connection between the blood reservoir 1 and the first fitting portion 22 of the connector 3 may not be detachable or may be detachable but difficult.

  As shown in FIGS. 10 and 11, the structure shown in FIGS. 4 and 6 is formed by forming the coupling portion 30 so that the holder 31 is disposed on the upper portion of the first fitting portion 22 of the connector 3. Different advantages are obtained. That is, while the blood reservoir 1 is attached to the holder 31, the oxygenator 2 connected by the connector 3 is rotated around the rotation center axis A of the first fitting portion 22 without interfering with the holder 31. It can be displaced.

  The connector of the medical device of the present invention can easily set the orientation of both the main medical device and the secondary medical device to a desired state, for example, to constitute an extracorporeal blood circulation circuit. Useful.

DESCRIPTION OF SYMBOLS 1 Blood reservoir 2 Artificial lung 3 Connecting tool 4 Main body part 5 Lid body 6 Blood storage chamber 7 Blood outflow port 8, 21, 30 Joint part 8a, 8b, 23a Annular outer peripheral surface 9 Intracardiac blood flow entry port 10 Ports 11 and 12 Chemical solution injection port 13 Exhaust port 14 Heat exchange part 14a Stainless steel pipe bundle 15 Gas exchange part 15a Hollow fiber bundle 16a Blood inlet port 16b Blood outlet ports 17 and 18 Cold / hot water ports 19 and 20 Gas port 22 First fitting Parts 22a, 21a annular inner peripheral surface 23 second fitting part 24 laterally extending part 25 longitudinally extending part 26 inclined surface 27 locking operation part 28, 29 O-ring 31 holder

Claims (8)

A main medical device;
A medical auxiliary device used in cooperation with the medical main device;
A medical device connector configured to displaceably hold the medical auxiliary device relative to the medical main device ;
The connector is
A first fitting portion capable of fitting via a cylindrical surface to a coupling portion provided on the bottom surface of the medical main device;
A second fitting portion capable of fitting via a cylindrical surface to a coupling portion provided at an upper portion of the medical auxiliary device;
A support structure unit that supports and integrates the first fitting unit and the second fitting unit;
The support structure portion is rotatable about a rotation center axis of the first fitting portion with respect to the medical main device, and the second fitting portion is rotated with respect to the medical auxiliary device. Pivotable around a central axis,
The rotation center axis of the first fitting part and the rotation center axis of the second fitting part are parallel to each other and arranged with a space therebetween .
The combined medical device, wherein the rotation center shafts of the first and second fitting portions extend in a vertical direction of the medical main device. The support structure includes a laterally extending portion that extends laterally from the first fitting portion, and a longitudinally extending portion that extends upward from the second fitting portion and is coupled to the laterally extending portion. The bending structure part formed in the site | part which the said horizontal direction extension part and the said vertical direction extension part couple | bonded, The outer corner | angular part of the said bending structure part forms the inclined surface. Combined medical device . Said medical main unit, have a downward projecting portion in which a part off the center of the bottom surface of the main body portion is projected downward,
The combined medical device according to claim 1 , wherein the coupling portion of the medical main device is provided so as to protrude downward at a position separated from the downward protruding portion of the bottom surface of the main body portion.   One of the coupling portion and the first fitting portion of the medical main device forms an annular inner circumferential surface, and the other forms an annular outer circumferential surface, and the coupling portion of the medical auxiliary device and the second One of the fitting portions forms an annular inner peripheral surface, and the other forms an annular outer peripheral surface. By fitting the annular inner peripheral surface and the annular outer peripheral surface, the main medical device and the first 1 fitting part and the said medical auxiliary | assistant apparatus and the said 2nd fitting part are couple | bonded, respectively, The said medical auxiliary | assistant part between the said coupling | bond part and said 1st fitting part, and the said medical auxiliary | assistant The soft O-ring is interposed between the peripheral surfaces of the annular inner peripheral surface and the annular outer peripheral surface facing each other in at least one of the coupling portion and the second fitting portion of the apparatus. 3. A composite medical device according to 3. The support structure includes a laterally extending portion that extends laterally from the first fitting portion, and a longitudinally extending portion that extends upward from the second fitting portion and is coupled to the laterally extending portion. And a bent structure portion formed at a portion where the laterally extending portion and the longitudinally extending portion are combined, and an outer corner portion of the bent structure portion forms an inclined surface,
The laterally extending portion is arranged such that when the connector is rotated around the coupling portion of the medical main device, the rotatable area is 360 degrees while avoiding the side surface of the downward projecting portion. The composite medical device according to claim 3 or 4, wherein dimensions of the inclined surface are set.   The combined medical device according to claim 5, wherein the medical auxiliary device can be prevented from interfering with the downward projecting portion within the entire rotation range of the longitudinally extending portion. A blood reservoir having a blood storage chamber partially protruding from the center of the bottom surface of the main body, and having a blood outflow port at the lower end of the blood storage chamber and a blood inflow port at the top of the main body When,
An oxygenator connected to the blood reservoir, having a blood channel for performing gas exchange by crossing the gas channel and blood,
A medical device connector configured to displaceably hold a medical auxiliary device by a medical main device, and can be fitted to a coupling portion of the medical main device via a cylindrical surface A first fitting portion, a second fitting portion capable of fitting via a cylindrical surface to the joint portion of the medical auxiliary device, the first fitting portion and the second fitting portion, A support structure unit that supports and integrates the support structure unit, the support structure unit being rotatable about a rotation center axis of the first fitting unit with respect to the medical main device, and The medical auxiliary device is rotatable about a rotation center axis of the second fitting portion, and the rotation center axis of the first fitting portion and the rotation center axis of the second fitting portion are mutually A medical device connector parallel to each other and spaced from each other ,
The blood outflow port of the blood reservoir is configured to be connected to the inflow side of the blood flow path of the artificial lung via a blood pump.
The connecting device connects the blood reservoir as the medical main device and the artificial lung as the medical auxiliary device,
The coupling part of the blood reservoir that is coupled to the first fitting part of the connector is provided to protrude downward at a position separated from the blood reservoir on the bottom surface of the main body part,
The coupling portion of the oxygenator that is coupled to the second fitting portion is provided on an upper portion of the oxygenator,
The extracorporeal circulatory blood processing apparatus in which the rotation center axes of the first and second fitting portions extend in the vertical direction of the blood reservoir. A blood reservoir having a blood storage chamber partially protruding from the center of the bottom surface of the main body, and having a blood outflow port at the lower end of the blood storage chamber and a blood inflow port at the top of the main body When,
A medical device connector configured to displaceably hold a medical auxiliary device by a medical main device, and can be fitted to a coupling portion of the medical main device via a cylindrical surface A first fitting portion, a second fitting portion capable of fitting via a cylindrical surface to the joint portion of the medical auxiliary device, the first fitting portion and the second fitting portion, A support structure unit that supports and integrates the support structure unit, the support structure unit being rotatable about a rotation center axis of the first fitting unit with respect to the medical main device, and The medical auxiliary device is rotatable about a rotation center axis of the second fitting portion, and the rotation center axis of the first fitting portion and the rotation center axis of the second fitting portion are mutually A medical device connector parallel to each other and spaced from each other ,
The connector is coupled to the blood reservoir at the first fitting portion with the blood reservoir as the medical main device,
The coupling part of the blood reservoir that is coupled to the first fitting part of the connector is provided to protrude downward at a position separated from the blood reservoir on the bottom surface of the main body part,
The blood reservoir unit in which the rotation center axis of the first fitting portion extends in the vertical direction of the blood reservoir.

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